update gradle wrapper

- refactor some other things as well

.forgejo/workflows/publish.yml

@@ -0,0 +1,24 @@
+name: Publish to snapshot maven
+
+on:
+  push:
+    branches:
+      - 'main'
+
+jobs:
+  build:
+    runs-on: docker
+    steps:
+    - uses: actions/checkout@v4
+    - uses: https://github.com/actions/setup-java@v4
+      with:
+        distribution: 'temurin'
+        java-version: 21
+    - uses: https://github.com/gradle/actions/setup-gradle@v3
+    - name: Build
+      run: |
+        chmod +x ./gradlew
+        cat ./settings.gradle.kts | sed "s/^.*:minecraft.*$//g" > settings.gradle.kts
+        ./gradlew :publishMavenJavaPublicationToFrogMCSnapshotsMavenRepository \
+        -PFrogMCSnapshotsMavenUsername=${{ secrets.MAVEN_PUSH_USER }} \
+        -PFrogMCSnapshotsMavenPassword=${{ secrets.MAVEN_PUSH_TOKEN }}

build.gradle.kts

@@ -1,21 +1,21 @@
 plugins {
     java
     `java-library`
-    id("io.freefair.lombok").version("8.+")
+    id("io.freefair.lombok") version "8.+"
     `maven-publish`
 }
 
-group = "org.ecorous.esnesnon"
+group = "dev.frogmc"
 version = "0.0.1-SNAPSHOT"
 
 repositories {
     maven {
-        name = "Esnesnon Maven/Snapshots"
+        name = "FrogMC Maven/Snapshots"
-        url = uri("https://maven-esnesnon.ecorous.org/snapshots")
+        url = uri("https://maven.frogmc.dev/snapshots")
     }
     maven {
-        name = "Esnesnon Maven/Releases"
+        name = "FrogMC Maven/Releases"
-        url = uri("https://maven-esnesnon.ecorous.org/releases")
+        url = uri("https://maven.frogmc.dev/releases")
     }
     maven("https://maven.fabricmc.net/")
     maven("https://repo.spongepowered.org/maven")
@@ -23,19 +23,39 @@ repositories {
 }
 
 dependencies {
-    implementation(libs.remapper)
+    implementation(libs.thyroxine){
+        isTransitive = false
+    }
     compileOnly("org.apache.logging.log4j:log4j-slf4j2-impl:3.0.0-beta2")
     compileOnly("org.apache.logging.log4j:log4j-api:3.0.0-beta2")
     compileOnly("org.apache.logging.log4j:log4j-core:3.0.0-beta2")
 
     api(libs.mixin)
-    api(libs.nightconfig)
+    api(libs.mixinextras)
+    implementation(libs.nightconfig)
     api(libs.annotations)
 }
 
+
+
 java {
     sourceCompatibility = JavaVersion.VERSION_21
     targetCompatibility = JavaVersion.VERSION_21
+
+    withJavadocJar()
+    withSourcesJar()
+}
+
+tasks.javadoc {
+    include("**/api/**")
+}
+
+tasks.processResources {
+    inputs.property("version", version)
+
+    filesMatching("frog.mod.toml") {
+        expand("version" to version)
+    }
 }
 
 publishing {
@@ -47,8 +67,8 @@ publishing {
 
     repositories {
         maven {
-            name = "EsnesnonSnapshotsMaven"
+            name = "FrogMCSnapshotsMaven"
-            url = uri("https://maven-esnesnon.ecorous.org/snapshots")
+            url = uri("https://maven.frogmc.dev/snapshots")
             credentials(PasswordCredentials::class)
             authentication {
                 create<BasicAuthentication>("basic")
@@ -56,8 +76,8 @@ publishing {
         }
 
         maven {
-            name = "EsnesnonReleasesMaven"
+            name = "FrogMCReleasesMaven"
-            url = uri("https://maven-esnesnon.ecorous.org/releases")
+            url = uri("https://maven.frogmc.dev/releases")
             credentials(PasswordCredentials::class)
             authentication {
                 create<BasicAuthentication>("basic")

gradle/libs.versions.toml

@@ -1,16 +1,18 @@
 [versions]
 
-remapper = "1.0.0-SNAPSHOT"
+thyroxine = "1.0.0-SNAPSHOT"
-nightconfig = "3.7.1"
+nightconfig = "3.7.2"
-mixin = "0.13.4+mixin.0.8.5"
+mixin = "0.14.0+mixin.0.8.6"
 annotations = "24.1.0"
+mixinextras = "0.3.6"
 
 [libraries]
 
-remapper = { module = "org.ecorous.esnesnon:nonsense-remapper", version.ref = "remapper" }
+thyroxine = { module = "dev.frogmc:thyroxine", version.ref = "thyroxine" }
 nightconfig = { module = "com.electronwill.night-config:toml", version.ref = "nightconfig" }
 mixin = { module = "net.fabricmc:sponge-mixin", version.ref = "mixin" }
 annotations = { module = "org.jetbrains:annotations", version.ref = "annotations" }
+mixinextras = { module = "io.github.llamalad7:mixinextras-common", version.ref = "mixinextras" }
 
 [bundles]
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 #Sat May 11 16:50:23 CEST 2024
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.8-bin.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists

minecraft/build.gradle.kts

@@ -1,18 +1,18 @@
-import org.ecorous.esnesnon.gradle.ext.minecraft
+import dev.frogmc.phytotelma.ext.minecraft
 
 plugins {
     java
-    id("org.ecorous.esnesnon.nonsense-gradle").version("0.0.1-SNAPSHOT")
+    id("dev.frogmc.phytotelma") version "0.0.1-SNAPSHOT"
 }
 
 repositories {
     maven {
-        name = "Esnesnon Maven/Snapshots"
+        name = "FrogMC Maven/Snapshots"
-        url = uri("https://maven-esnesnon.ecorous.org/snapshots")
+        url = uri("https://maven-frogmc.ecorous.org/snapshots")
     }
     maven {
-        name = "Esnesnon Maven/Releases"
+        name = "FrogMC Maven/Releases"
-        url = uri("https://maven-esnesnon.ecorous.org/releases")
+        url = uri("https://maven-frogmc.ecorous.org/releases")
     }
     mavenCentral()
 }
@@ -21,5 +21,9 @@ minecraft("1.20.6")
 
 dependencies {
     implementation(project(":"))
-    annotationProcessor(libs.mixin)
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_21
+    targetCompatibility = JavaVersion.VERSION_21
 }

minecraft/src/main/java/dev/frogmc/frogloader/example/ExamplePreLaunchExtension.java

@@ -1,6 +1,6 @@
-package org.ecorous.esnesnon.nonsense.loader.example;
+package dev.frogmc.frogloader.example;
 
-import org.ecorous.esnesnon.nonsense.loader.api.extensions.PreLaunchExtension;
+import dev.frogmc.frogloader.api.extensions.PreLaunchExtension;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

minecraft/src/main/java/dev/frogmc/frogloader/example/mixin/TitleScreenMixin.java

@@ -1,4 +1,4 @@
-package org.ecorous.esnesnon.nonsense.loader.example.mixin;
+package dev.frogmc.frogloader.example.mixin;
 
 import net.minecraft.client.gui.components.FocusableTextWidget;
 import net.minecraft.client.gui.screens.Screen;
@@ -16,7 +16,7 @@ public abstract class TitleScreenMixin extends Screen {
 		super(title);
 	}
 
-	@Inject(method = "createNormalMenuOptions", at = @At("TAIL"), remap = false)
+	@Inject(method = "createNormalMenuOptions", at = @At("TAIL"))
 	private void showExample(int y, int rowHeight, CallbackInfo ci) {
 		var widget = new FocusableTextWidget(200, Component.literal("<insert frog here!>"), this.font);
 		widget.setPosition(width / 2 - widget.getWidth(), 20);

minecraft/src/main/resources/example_mod.accesswidener

@@ -0,0 +1,5 @@
+accessWidener   v2  named
+
+accessible method net/minecraft/world/level/block/TransparentBlock codec ()Lcom/mojang/serialization/MapCodec;
+mutable field net/minecraft/client/gui/GuiSpriteManager METADATA_SECTIONS Ljava/util/Set;
+mutable field net/minecraft/client/gui/GuiGraphics$ScissorStack stack Ljava/util/Deque;

minecraft/src/main/resources/example_mod.mixins.json

@@ -1,11 +1,11 @@
 {
   "required": true,
   "minVersion": "0.8",
-  "package": "org.ecorous.esnesnon.nonsense.loader.example.mixin",
+  "package": "dev.frogmc.frogloader.example.mixin",
   "compatibilityLevel": "JAVA_21",
   "mixins": [],
   "client": [
-    "TitleScreenMixin"
+	  "TitleScreenMixin"
   ],
   "injectors": {
     "defaultRequire": 1

minecraft/src/main/resources/frog.mod.toml

@@ -0,0 +1,17 @@
+[frog]
+format_version = "1.0.0"
+
+[frog.mod]
+id = "example_mod"
+name = "Example Mod"
+version = "1.0.0"
+license = "CC0-1.0"
+credits = [
+    { name = "You", roles = ["author", "other_role"] }
+]
+
+[frog.extensions]
+pre_launch = "dev.frogmc.frogloader.example.ExamplePreLaunchExtension"
+mixin_config = "example_mod.mixins.json"
+frog_aw = "example_mod.accesswidener"
+

minecraft/src/main/resources/nonsense.mod.toml

@@ -1,21 +0,0 @@
-[nonsense]
-id = "example_mod"
-name = "Example Mod"
-version = "1.0.0"
-license = "CC0-1.0"
-credits = [
-    { name = "You", roles = ["author", "other_role"] }
-]
-
-[nonsense.dependencies]
-depends = [
-    { id = "other_mod", versions = ">=0.2.0" }
-]
-breaks = [
-    { id = "old_mod", versions = "*" }
-]
-
-[nonsense.extensions]
-pre_launch = "org.ecorous.esnesnon.nonsense.loader.example.ExamplePreLaunchExtension"
-mixin_config = "example_mod.mixins.json"
-

settings.gradle.kts

@@ -1,18 +1,18 @@
 pluginManagement {
     repositories {
         maven {
-            name = "Esnesnos Maven Releases"
+            name = "FrogMC Maven Releases"
-            url = uri("https://maven-esnesnon.ecorous.org/releases")
+            url = uri("https://maven.frogmc.dev/releases")
         }
         maven {
-            name = "Esnesnos Maven Snapshots"
+            name = "FrogMC Maven Snapshots"
-            url = uri("https://maven-esnesnon.ecorous.org/snapshots")
+            url = uri("https://maven.frogmc.dev/snapshots")
         }
         gradlePluginPortal()
     }
 }
 
-rootProject.name = "nonsense-loader"
+rootProject.name = "frogloader"
 
 include(":minecraft")
 

src/main/java/dev/frogmc/frogloader/api/FrogLoader.java

@@ -0,0 +1,100 @@
+package dev.frogmc.frogloader.api;
+
+import java.nio.file.Path;
+import java.util.Collection;
+import java.util.Optional;
+
+import dev.frogmc.frogloader.api.env.Env;
+import dev.frogmc.frogloader.api.mod.ModProperties;
+import dev.frogmc.frogloader.api.plugin.FrogPlugin;
+import dev.frogmc.frogloader.impl.FrogLoaderImpl;
+
+/**
+ * General API to interact with this loader.
+ *
+ * @see ModProperties
+ * @see FrogPlugin
+ * @see Env
+ */
+public interface FrogLoader {
+
+	/**
+	 * Get an instance of this loader.
+	 *
+	 * @return An instance of this loader
+	 */
+	static FrogLoader getInstance() {
+		return FrogLoaderImpl.getInstance();
+	}
+
+	/**
+	 * Get all loaded plugins.
+	 *
+	 * @return A collection of all loaded plugins
+	 */
+	Collection<FrogPlugin> getPlugins();
+
+	/**
+	 * Get the current (physical) environment.
+	 *
+	 * @return The current environment
+	 * @see Env
+	 */
+	Env getEnv();
+
+	/**
+	 * Get the current game directory.
+	 *
+	 * @return The current game directory
+	 * <p>Note: Should always be the current working directory, but this method should</p>
+	 * be preferred over using the working directory directly.
+	 */
+	Path getGameDir();
+
+	/**
+	 * Get the current config directory.
+	 *
+	 * @return The current config directory
+	 */
+	Path getConfigDir();
+
+	/**
+	 * Get the current mods directory.
+	 *
+	 * @return The current mods directory
+	 */
+	Path getModsDir();
+
+	/**
+	 * Query whether this loader is currently running in a development environment.
+	 *
+	 * @return Whether this loader is currently running in a development environment
+	 */
+	boolean isDevelopment();
+
+	/**
+	 * Query whether a specific mod is loaded.
+	 *
+	 * @param id The mod id to query for
+	 * @return Whether a mod with this specific id is loaded
+	 */
+	boolean isModLoaded(String id);
+
+	/**
+	 * Get a mod's properties.
+	 *
+	 * @param id The mod id to query for
+	 * @return An Optional containing the mod's properties, if it is present
+	 * @see ModProperties
+	 */
+	Optional<ModProperties> getModProperties(String id);
+
+	/**
+	 * Get all loaded mods
+	 *
+	 * @return A collection of all loaded mods
+	 * @see ModProperties
+	 * @see FrogPlugin
+	 */
+	Collection<ModProperties> getMods();
+}

src/main/java/dev/frogmc/frogloader/api/env/Env.java

@@ -0,0 +1,40 @@
+package dev.frogmc.frogloader.api.env;
+
+import lombok.AllArgsConstructor;
+
+/**
+ * Physical environment constants
+ */
+@AllArgsConstructor
+public enum Env {
+	/**
+	 * The physical client environment
+	 */
+	CLIENT("CLIENT", "client"),
+	/**
+	 * The physical (dedicated) server environment
+	 */
+	SERVER("SERVER", "server"),
+	;
+
+
+	private final String mixinName, identifier;
+
+	/**
+	 * Get this environment's name, in the format Mixin understands.
+	 *
+	 * @return This environment's mixin name
+	 */
+	public String getMixinName() {
+		return this.mixinName;
+	}
+
+	/**
+	 * Get this environment's identifier
+	 *
+	 * @return This environment's identifier
+	 */
+	public String getIdentifier() {
+		return this.identifier;
+	}
+}

src/main/java/dev/frogmc/frogloader/api/extensions/PreLaunchExtension.java

@@ -0,0 +1,22 @@
+package dev.frogmc.frogloader.api.extensions;
+
+import dev.frogmc.frogloader.api.mod.ModExtensions;
+import dev.frogmc.frogloader.impl.mod.BuiltinExtensions;
+
+/**
+ * The Pre-Launch Extension.
+ * <p>This Extension is run right before the game is launched. (provided the used plugin supports it :) )</p>
+ *
+ * @see ModExtensions
+ */
+public interface PreLaunchExtension {
+	/**
+	 * This extension's id. This is the key to use in your frog.mod.toml.
+	 */
+	String ID = BuiltinExtensions.PRE_LAUNCH;
+
+	/**
+	 * The initializer. This method will be invoked when this extension is run.
+	 */
+	void onPreLaunch();
+}

src/main/java/dev/frogmc/frogloader/api/mod/ModDependencies.java

@@ -0,0 +1,158 @@
+package dev.frogmc.frogloader.api.mod;
+
+import java.util.*;
+
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * A mod's dependencies.
+ *
+ * <p>Mod dependencies are declared in four types:</p>
+ * <code>Type.DEPEND</code>, <code>Type.BREAK</code>, <code>Type.SUGGEST</code> and <code>Type.PROVIDE</code>
+ *
+ * <p>Note: The <code>Type.PROVIDE</code> is a bit of a special case in the way that it only supports a single SemVer version instead of a full version range.</p>
+ *
+ * @see ModDependencies.Type
+ * @see ModDependencies.Entry
+ * @see ModProperties
+ * @see SemVer
+ */
+public final class ModDependencies {
+
+	private final Map<Type, Collection<Entry>> entries = new HashMap<>();
+
+	/**
+	 * Construct new mod dependencies for a mod.
+	 * <p><strong>Internal use only.</strong></p>
+	 *
+	 * @param depends  <code>Type.DEPEND</code> entries
+	 * @param breaks   <code>Type.BREAK</code> entries
+	 * @param suggests <code>Type.SUGGEST</code> entries
+	 * @param provides <code>Type.PROVIDE</code> entries
+	 */
+	@ApiStatus.Internal
+	public ModDependencies(Collection<Entry> depends, Collection<Entry> breaks, Collection<Entry> suggests, Collection<Entry> provides) {
+		entries.put(Type.DEPEND, depends);
+		entries.put(Type.BREAK, breaks);
+		entries.put(Type.SUGGEST, suggests);
+		entries.put(Type.PROVIDE, provides);
+	}
+
+	/**
+	 * Get dependencies of a specific mod for a specific type
+	 *
+	 * @param type the dependency type to query for
+	 * @return a collection of dependency entries
+	 */
+	public Collection<Entry> getForType(Type type) {
+		return entries.get(type);
+	}
+
+	/**
+	 * Get entries that depend on a specific mod's id
+	 *
+	 * @param id the mod id to find dependency entries for
+	 * @return a collection of entries that depend on the given mod id
+	 */
+	public Collection<ModEntry> getForModId(String id) {
+		List<ModEntry> entries = new ArrayList<>();
+		for (Type type : Type.values()) {
+			for (Entry entry : getForType(type)) {
+				if (entry.id.equals(id)) {
+					entries.add(new ModEntry(type, entry.range, entry.link, entry.name));
+				}
+			}
+		}
+		return entries;
+	}
+
+	/**
+	 * Dependency types to distinguish their variants.
+	 */
+	public enum Type {
+		/**
+		 * Depend on another mod
+		 */
+		DEPEND,
+		/**
+		 * Declare another mod as breaking with your own
+		 */
+		BREAK,
+		/**
+		 * Suggest a user to install another mod
+		 */
+		SUGGEST,
+		/**
+		 * Declare your mod to provide another mod
+		 */
+		PROVIDE
+	}
+
+	/**
+	 * A data class to handle entries depending on a specific mod id
+	 */
+	public static class ModEntry {
+		private final Type type;
+		private final String range;
+		private final String link;
+		private final String name;
+
+		private ModEntry(Type type, String range, String link, String name) {
+			this.type = type;
+			this.range = range;
+			this.link = link;
+			this.name = name;
+		}
+
+		/**
+		 * Get this dependency's type
+		 *
+		 * @return This dependency's type
+		 */
+		public Type type() {
+			return type;
+		}
+
+		/**
+		 * Get this dependency's version range
+		 *
+		 * @return This dependency's version range
+		 */
+		public String range() {
+			return range;
+		}
+
+		/**
+		 * Get this dependency's link
+		 * <p>May be null.</p>
+		 *
+		 * @return This dependency's link
+		 */
+		public @Nullable String link() {
+			return link;
+		}
+
+		/**
+		 * Get this dependency's (friendly) name
+		 * <p>May be null.</p>
+		 *
+		 * @return This dependency's name
+		 */
+		public @Nullable String name() {
+			return name;
+		}
+	}
+
+	/**
+	 * General storage for dependencies
+	 *
+	 * @param id    the mod's id
+	 * @param range the dependency's version range
+	 * @param link  an optional link for information about this dependency
+	 * @param name  an optional (friendly) name for this dependency
+	 */
+	public record Entry(String id, String range, String link, String name) {
+
+	}
+}

src/main/java/dev/frogmc/frogloader/api/mod/ModExtensions.java

@@ -0,0 +1,127 @@
+package dev.frogmc.frogloader.api.mod;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.util.Map;
+import java.util.Collection;
+import java.util.function.Consumer;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * This class stores a mod's extensions.
+ * <p>An extension is a simple key-value mapping of a string name to any value.</p>
+ * <p>This class further provides utility methods to easily work with extension values of various types,
+ * especially for extensions providing some form of class or method reference.</p>
+ *
+ * @see ModProperties
+ */
+public final class ModExtensions {
+
+	private static final Logger LOGGER = LoggerFactory.getLogger(ModExtensions.class);
+	private final Map<String, Object> extensions;
+
+	private ModExtensions(Map<String, Object> entries) {
+		extensions = entries;
+	}
+
+	/**
+	 * Retrieve a new instance of this class.
+	 * <p><strong>Internal use only.</strong></p>
+	 *
+	 * @param entries the entries read from the mod's properties file
+	 * @return an instance of this class
+	 */
+	public static ModExtensions of(Map<String, Object> entries) {
+		return new ModExtensions(entries);
+	}
+
+	/**
+	 * Get the value of the provided extension name.
+	 *
+	 * @param key The extension name to query
+	 * @param <T> The type of the value of this extension
+	 * @return The value of the extension, or null
+	 */
+	@SuppressWarnings("unchecked")
+	public <T> T get(String key) {
+		return (T) extensions.get(key);
+	}
+
+	/**
+	 * Get the value of the provided extension name.
+	 *
+	 * @param key          The extension name to query
+	 * @param defaultValue a default value
+	 * @param <T>          The type of the value of this extension
+	 * @return The value of the extension, or the default value if it isn't present
+	 */
+	@SuppressWarnings("unchecked")
+	public <T> T getOrDefault(String key, T defaultValue) {
+		return (T) extensions.getOrDefault(key, defaultValue);
+	}
+
+	/**
+	 * Run the given action on this extension if it is present.
+	 *
+	 * @param key    the extension name to query
+	 * @param action the action to run on the value of the extension if it is present
+	 * @param <T>    The type of the value of this extension
+	 */
+	public <T> void runIfPresent(String key, Consumer<T> action) {
+		T value = get(key);
+		if (value != null) {
+			action.accept(value);
+		}
+	}
+
+	/**
+	 * Run the given action on this extension if it is present.
+	 * <p>This method simplifies handling references to classes or methods.</p>
+	 * It will first query the string value of the extension and, if it is found, create a new instance of the referenced class
+	 * or invoke the referenced method to retrieve an instance of the provided class. Then the provided action is run on this
+	 * object.
+	 *
+	 * @param key    The name of the extension
+	 * @param type   The class type of the extension (The class the extension class is extending/implementing)
+	 * @param action The action to run on the newly retrieved instance of the provided class
+	 * @param <T>    The type of the class
+	 */
+	@SuppressWarnings({"rawtypes", "unchecked"})
+	public <T> void runIfPresent(String key, Class<T> type, Consumer<T> action) {
+
+		Object value = get(key);
+
+		if (value == null) {
+			return;
+		}
+
+		Consumer<String> c = s -> {
+			try {
+				MethodHandle handle;
+				if (s.contains("::")) {
+					String[] parts = s.split("::");
+					handle = MethodHandles.lookup().findVirtual(Class.forName(parts[0]), parts[1], MethodType.methodType(type));
+				} else {
+					handle = MethodHandles.lookup().findConstructor(Class.forName(s), MethodType.methodType(void.class));
+				}
+				T object = (T) handle.invoke();
+				if (object != null) {
+					action.accept(object);
+				}
+			} catch (Throwable e) {
+				LOGGER.warn("Failed to instantiate Extension: ", e);
+			}
+		};
+
+		if (value instanceof String s){
+			c.accept(s);
+		} else if (value instanceof Collection l){
+			((Collection<String>) l).forEach(c);
+		}
+	}
+
+
+}

src/main/java/dev/frogmc/frogloader/api/mod/ModProperties.java

@@ -0,0 +1,86 @@
+package dev.frogmc.frogloader.api.mod;
+
+import java.nio.file.Path;
+import java.util.Collection;
+import java.util.Map;
+
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * A mod's properties. This class represents a mod at runtime.
+ * It is read from each mod's <code>frog.mod.toml</code> file.
+ *
+ * @see ModDependencies
+ * @see ModExtensions
+ * @see SemVer
+ */
+public interface ModProperties {
+
+	/**
+	 * Get this mod's id.
+	 *
+	 * @return The mod's id
+	 */
+	String id();
+
+	/**
+	 * Get this mod's name.
+	 *
+	 * @return The mod's name
+	 */
+	String name();
+
+	/**
+	 * Get this mod's icon.
+	 * <p>May be null if the mod doesn't specify an icon.</p>
+	 *
+	 * @return The mod's icon
+	 */
+	@Nullable
+	String icon();
+
+	/**
+	 * Get this mod's version.
+	 *
+	 * @return The mod's version
+	 */
+	SemVer version();
+
+	/**
+	 * Get this mod's license.
+	 *
+	 * @return The mod's license
+	 */
+	String license();
+
+	/**
+	 * Get credits for this mod.
+	 * <p>This is a map containing people's names as keys and their roles in this mod as values.</p>
+	 *
+	 * @return The mod's credits.
+	 */
+	Map<String, Collection<String>> credits();
+
+	/**
+	 * Get this mod's dependencies.
+	 *
+	 * @return The mod's dependencies
+	 * @see ModDependencies
+	 */
+	ModDependencies dependencies();
+
+	/**
+	 * Get this mod's declared extensions.
+	 *
+	 * @return The mod's extensions
+	 * @see ModExtensions
+	 */
+	ModExtensions extensions();
+
+	/**
+	 * Get this mod's paths
+	 * @return Where this mod is loaded from
+	 */
+	Collection<Path> paths();
+
+}

src/main/java/dev/frogmc/frogloader/api/mod/SemVer.java

@@ -0,0 +1,46 @@
+package dev.frogmc.frogloader.api.mod;
+
+/**
+ * Simple access to SemVer-style versions. This is used for versioning mods.
+ *
+ * @see ModProperties
+ */
+public interface SemVer extends Comparable<SemVer> {
+	/**
+	 * Get this version's major version component.
+	 *
+	 * @return This version's major version component
+	 */
+	int major();
+
+	/**
+	 * Get this version's minor version component.
+	 *
+	 * @return This version's minor version component
+	 */
+	int minor();
+
+	/**
+	 * Get this version's patch version component.
+	 *
+	 * @return This version's patch version component
+	 */
+	int patch();
+
+	/**
+	 * Get this version's pre-release version component.
+	 *
+	 * @return This version's pre-release version component
+	 */
+	String prerelease();
+
+	/**
+	 * Get this version's build version component.
+	 *
+	 * @return This version's build version component
+	 */
+	String build();
+
+	@Override
+	boolean equals(Object other);
+}

src/main/java/dev/frogmc/frogloader/api/plugin/FrogPlugin.java

@@ -0,0 +1,57 @@
+package dev.frogmc.frogloader.api.plugin;
+
+import java.util.Collection;
+import java.util.Collections;
+
+import dev.frogmc.frogloader.api.FrogLoader;
+import dev.frogmc.frogloader.api.mod.ModProperties;
+
+/**
+ * A Plugin that may load mods for a specific game and environment
+ *
+ * @see FrogLoader
+ */
+public interface FrogPlugin {
+
+	/**
+	 * General run method of this plugin. This method is run after all plugins have been initialized.
+	 *
+	 * @see FrogPlugin#init(FrogLoader)
+	 * @see FrogPlugin#getMods()
+	 */
+	default void run() {
+	}
+
+	/**
+	 * Check whether this plugin is applicable for the current environment
+	 *
+	 * @return Whether this plugin is applicable to be loaded in the current environment
+	 */
+	default boolean isApplicable() {
+		return false;
+	}
+
+	/**
+	 * Initialization method for this plugin. This method will be called after <code>isApplicable()</code>
+	 * if it returns true to initialize is plugin.
+	 *
+	 * @param loader the loader loading this plugin
+	 * @throws Exception This method may throw any exception, it will be handled by the loader.
+	 * @see FrogPlugin#isApplicable()
+	 * @see FrogPlugin#getMods()
+	 */
+	default void init(FrogLoader loader) throws Exception {
+	}
+
+	/**
+	 * This method should return all mods loaded by this plugin. It will be queried after <code>init(FrogLoader)</code>
+	 * and before <code>run()</code>.
+	 *
+	 * @return A collection of mods loaded by this plugin.
+	 * @see FrogPlugin#init(FrogLoader)
+	 * @see FrogPlugin#run()
+	 */
+	default Collection<ModProperties> getMods() {
+		return Collections.emptySet();
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/Discovery.java

@@ -0,0 +1,37 @@
+package dev.frogmc.frogloader.impl;
+
+import java.io.IOException;
+import java.nio.file.FileVisitResult;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.SimpleFileVisitor;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.function.Predicate;
+
+public class Discovery {
+	public static Collection<Path> find(Path start, Predicate<Path> directoryFilter, Predicate<Path> fileFilter) throws IOException {
+		List<Path> paths = new ArrayList<>();
+		Files.walkFileTree(start, new SimpleFileVisitor<>() {
+
+			@Override
+			public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
+				if (directoryFilter.test(dir)) {
+					return super.preVisitDirectory(dir, attrs);
+				}
+				return FileVisitResult.SKIP_SUBTREE;
+			}
+
+			@Override
+			public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
+				if (fileFilter.test(file)) {
+					paths.add(file);
+				}
+				return super.visitFile(file, attrs);
+			}
+		});
+		return paths;
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/FrogLoaderImpl.java

@@ -0,0 +1,171 @@
+package dev.frogmc.frogloader.impl;
+
+import java.io.IOException;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.*;
+import java.util.stream.Collectors;
+
+import com.google.gson.Gson;
+import dev.frogmc.frogloader.api.FrogLoader;
+import dev.frogmc.frogloader.api.env.Env;
+import dev.frogmc.frogloader.api.mod.ModProperties;
+import dev.frogmc.frogloader.api.plugin.FrogPlugin;
+import dev.frogmc.frogloader.impl.gui.LoaderGui;
+import dev.frogmc.frogloader.impl.launch.MixinClassLoader;
+import dev.frogmc.frogloader.impl.mod.ModUtil;
+import dev.frogmc.frogloader.impl.util.CrashReportGenerator;
+import dev.frogmc.frogloader.impl.util.SystemProperties;
+import lombok.Getter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.spongepowered.asm.mixin.MixinEnvironment;
+
+public class FrogLoaderImpl implements FrogLoader {
+	public static final String MOD_FILE_EXTENSION = ".frogmod";
+	private static final boolean DEV_ENV = Boolean.getBoolean(SystemProperties.DEVELOPMENT);
+	@Getter
+	private static FrogLoaderImpl instance;
+	@Getter
+	private final String[] args;
+	@Getter
+	private final Env env;
+	private final Logger LOGGER = LoggerFactory.getLogger("FrogLoader");
+
+	@Getter
+	private final List<FrogPlugin> plugins = new ArrayList<>();
+
+	@Getter
+	private final Path gameDir, configDir, modsDir;
+
+	@Getter
+	private final MixinClassLoader classloader;
+
+	@Getter
+	private final Gson gson = new Gson();
+
+	private Map<String, ModProperties> mods;
+	private Collection<String> modIds;
+
+
+	private FrogLoaderImpl(String[] args, Env env) {
+		instance = this;
+		this.classloader = (MixinClassLoader) this.getClass().getClassLoader();
+		this.args = args;
+		this.env = env;
+
+		gameDir = Paths.get(getArgumentOrElse("gameDir", "."));
+		configDir = gameDir.resolve("config");
+		modsDir = gameDir.resolve("mods");
+
+		try {
+			Files.createDirectories(gameDir);
+			Files.createDirectories(configDir);
+			Files.createDirectories(modsDir);
+		} catch (IOException e) {
+			LOGGER.warn("Failed to create essential directories ", e);
+		}
+
+		try {
+			discoverPlugins();
+			advanceMixinState();
+			mods = collectMods();
+			modIds = collectModIds();
+			LOGGER.info(ModUtil.getModList(mods.values()));
+			LOGGER.info("Launching...");
+			plugins.forEach(FrogPlugin::run);
+		} catch (Throwable t) {
+			LoaderGui.builder().setContent(LoaderGui.ContentType.GENERIC_ERROR, t).addReport(CrashReportGenerator.writeReport(t, collectMods().values())).build().show();
+		}
+	}
+
+	@SuppressWarnings("unused")
+	public static void run(String[] args, Env env) {
+		if (instance != null) {
+			throw new IllegalStateException("Loader was started multiple times!");
+		}
+
+		new FrogLoaderImpl(args, env);
+	}
+
+	private void advanceMixinState() {
+		try {
+			MethodHandle m = MethodHandles.privateLookupIn(MixinEnvironment.class, MethodHandles.lookup()).findStatic(MixinEnvironment.class, "gotoPhase", MethodType.methodType(void.class, MixinEnvironment.Phase.class));
+			m.invoke(MixinEnvironment.Phase.INIT);
+			m.invoke(MixinEnvironment.Phase.DEFAULT);
+		} catch (Throwable e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+	private void discoverPlugins() {
+		ServiceLoader.load(FrogPlugin.class).forEach(plugin -> {
+			try {
+				if (plugin.isApplicable()) {
+					plugin.init(this);
+					plugins.add(plugin);
+				}
+			} catch (Throwable e) {
+				LOGGER.error("Error during plugin initialisation: ", e);
+				throw new RuntimeException(e);
+			}
+		});
+
+		if (plugins.isEmpty()) {
+			throw new IllegalStateException("No plugin applicable to the current state was found!");
+		}
+	}
+
+	public String getArgument(String name) {
+		for (int i = 0; i < args.length - 1; i += 2) {
+			if (args[i].equals("--" + name)) {
+				return args[i + 1];
+			}
+		}
+		return "";
+	}
+
+	public String getArgumentOrElse(String name, String other) {
+		String res = getArgument(name);
+		if (res.isEmpty()) {
+			return other;
+		}
+		return res;
+	}
+
+	@Override
+	public boolean isDevelopment() {
+		return DEV_ENV;
+	}
+
+	@Override
+	public boolean isModLoaded(String id) {
+		return modIds.contains(id);
+	}
+
+	@Override
+	public Optional<ModProperties> getModProperties(String id) {
+		return Optional.ofNullable(mods.get(id));
+	}
+
+	private Map<String, ModProperties> collectMods() {
+		Collection<ModProperties> properties = plugins.stream().map(FrogPlugin::getMods).reduce(new HashSet<>(), (s1, s2) -> {
+			s1.addAll(s2);
+			return s1;
+		});
+		return properties.stream().collect(Collectors.toMap(ModProperties::id, m -> m));
+	}
+
+	private Collection<String> collectModIds() {
+		return mods.keySet();
+	}
+
+	@Override
+	public Collection<ModProperties> getMods() {
+		return mods.values();
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/SemVerParseException.java

@@ -1,9 +1,9 @@
-package org.ecorous.esnesnon.nonsense.loader.impl;
+package dev.frogmc.frogloader.impl;
 
 import java.io.IOException;
 
 public class SemVerParseException extends IOException {
 	public SemVerParseException(String message) {
-		super("Failed to parse SemVer: "+message);
+		super("Failed to parse SemVer: " + message);
 	}
 }

src/main/java/dev/frogmc/frogloader/impl/gui/LoaderGui.java

@@ -0,0 +1,281 @@
+package dev.frogmc.frogloader.impl.gui;
+
+import javax.swing.*;
+import javax.swing.plaf.basic.BasicBorders;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.net.URI;
+import java.net.URL;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+import java.util.function.BiConsumer;
+import java.util.function.Consumer;
+
+import dev.frogmc.frogloader.impl.FrogLoaderImpl;
+import dev.frogmc.frogloader.impl.mod.ModDependencyResolver;
+import dev.frogmc.frogloader.impl.mod.ModUtil;
+import dev.frogmc.frogloader.impl.util.URLUtil;
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import org.jetbrains.annotations.Nullable;
+
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+public class LoaderGui {
+
+	private final JFrame frame;
+	private final boolean keepRunning;
+
+	public static Builder builder() {
+		return new Builder();
+	}
+
+	private static JFrame getFrame(Path report) {
+		var frame = new JFrame();
+		frame.setTitle("FrogLoader " + LoaderGui.class.getPackage().getImplementationVersion());
+		frame.setSize(952, 560);
+		frame.setLocationRelativeTo(null);
+		frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
+
+		JPanel actions = new JPanel(new FlowLayout(FlowLayout.RIGHT));
+		if (report != null) {
+			actions.add(new JButton(new AbstractAction("Open Report") {
+				@Override
+				public void actionPerformed(ActionEvent e) {
+					URLUtil.open(report.toUri());
+				}
+			}));
+			actions.add(new JButton(new AbstractAction("Copy Report") {
+				@Override
+				public void actionPerformed(ActionEvent e) {
+					URLUtil.copyStringContent(report.toUri());
+				}
+			}));
+		}
+
+		actions.add(new JButton(new AbstractAction("Join Discord") {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				URLUtil.open(URI.create("https://discord.frogmc.dev"));
+			}
+		}));
+
+		actions.add(new JButton(new AbstractAction("Exit") {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				frame.dispose();
+			}
+		}));
+		frame.add(actions, BorderLayout.SOUTH);
+		return frame;
+	}
+
+	private static String printVersionRange(ModDependencyResolver.VersionRange range) {
+		return "range: \n" + range.toString().replace("||", "or");
+	}
+
+	private static JPanel getEntry(String description, ModDependencyResolver.VersionRange range, Color background, @Nullable String icon, List<JButton> actions) {
+		JPanel entry = new JPanel(new BorderLayout());
+		entry.setBorder(BasicBorders.getInternalFrameBorder());
+		Box text = Box.createVerticalBox();
+		text.setBorder(BorderFactory.createEmptyBorder());
+		JTextPane desc = new JTextPane();
+		desc.setContentType("text/html");
+		desc.setEditable(false);
+		desc.setBackground(background);
+		desc.setText("<html>" + description.replace("<", "&lt;").replace("\n", "<br>") + "</html>");
+		JPanel actionPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
+		actions.forEach(actionPanel::add);
+		if (icon != null) {
+			URL location = LoaderGui.class.getResource(icon);
+			if (location != null) {
+				entry.add(new JLabel(new ImageIcon(location)), BorderLayout.WEST);
+			}
+		}
+		text.add(desc);
+		JCheckBox showAdvanced = new JCheckBox("Show raw version range");
+		JTextPane advanced = new JTextPane();
+		advanced.setEditable(false);
+		advanced.setBackground(background);
+		advanced.setText(range.toString());
+		advanced.setVisible(false);
+		text.add(advanced);
+		showAdvanced.addActionListener(new AbstractAction() {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				advanced.setVisible(showAdvanced.isSelected());
+			}
+		});
+		entry.add(text);
+		Box bottom = Box.createHorizontalBox();
+		bottom.add(showAdvanced, actionPanel);
+		entry.add(bottom, BorderLayout.SOUTH);
+		return entry;
+	}
+
+	@SuppressWarnings("BusyWait")
+	public void show() {
+		frame.setVisible(true);
+
+		while (frame.isVisible()) {
+			try {
+				Thread.sleep(100);
+			} catch (InterruptedException ignored) {
+			}
+		}
+
+		if (!keepRunning) {
+			System.exit(0);
+		}
+	}
+
+	public static class Builder {
+
+		private Path report;
+		private Consumer<JFrame> contentFunc;
+		private boolean keepRunning = false;
+
+		public <T> Builder setContent(ContentType<T> type, T argument) {
+			contentFunc = f -> type.contentSetter.accept(f, argument);
+			return this;
+		}
+
+		public Builder addReport(Path report) {
+			this.report = report;
+			return this;
+		}
+
+		public Builder keepRunning() {
+			keepRunning = true;
+			return this;
+		}
+
+		public LoaderGui build() {
+			JFrame frame = getFrame(report);
+			if (contentFunc != null) {
+				contentFunc.accept(frame);
+			}
+			return new LoaderGui(frame, keepRunning);
+		}
+	}
+
+	@AllArgsConstructor
+	public static class ContentType<T> {
+		public static final ContentType<ModDependencyResolver.UnfulfilledDependencyException> INFO_UNFULFILLED_DEP = new ContentType<>((frame, ex) -> {
+			JPanel pane = new JPanel(new BorderLayout());
+			JTextPane title = new JTextPane();
+			title.setBackground(pane.getBackground());
+			title.setEditable(false);
+			int size = ex.getDependencies().size();
+			title.setText("Found " + size + " Error" + (size > 1 ? "s:" : ":"));
+			title.setFont(title.getFont().deriveFont(Font.BOLD, 16f));
+			title.setBorder(BorderFactory.createEmptyBorder(8, 0, 8, 0));
+			pane.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
+			pane.add(title, BorderLayout.NORTH);
+
+			Box list = Box.createVerticalBox();
+			ex.getDependencies().forEach(e -> {
+				StringBuilder description = new StringBuilder();
+				if (e.presentVersion() != null) {
+					description.append("Mod ").append(e.source().id()).append(" (").append(e.source().name()).append(") depends on ");
+					if (e.dependencyName() != null) {
+						description.append(e.dependency()).append(" (").append(e.dependencyName()).append(") ");
+					} else {
+						description.append("a Mod with id ").append(e.dependency());
+					}
+					description.append(" with a version matching ").append(printVersionRange(e.range())).append(", but a different version is present or provided: ").append(e.presentVersion());
+				} else {
+					description.append("Mod ").append(e.source().id()).append(" (").append(e.source().name()).append(") depends on ");
+					if (e.dependencyName() != null) {
+						description.append(e.dependency()).append(" (").append(e.dependencyName()).append(") ");
+					} else {
+						description.append("a Mod with id ").append(e.dependency());
+					}
+					description.append(" with a version matching ").append(printVersionRange(e.range())).append(". \nNo version is currently available.");
+				}
+				description.append("\nSuggested Solution: Install ")
+						.append(e.range().maxCompatible().or(e.range()::minCompatible).map(Objects::toString)
+								.map(s -> "0.0.0".equals(s) ? "any version" : "version " + s).orElse("<unknown>"))
+						.append(" of ");
+				if (e.dependencyName() != null) {
+					description.append(e.dependency()).append(" (").append(e.dependencyName()).append(") ");
+				} else {
+					description.append("Mod with id ").append(e.dependency());
+				}
+				List<JButton> actions = new ArrayList<>();
+				if (e.link() != null) {
+					boolean install = e.link().endsWith(FrogLoaderImpl.MOD_FILE_EXTENSION);
+					String name = install ? "Install" : "Open mod page";
+					JButton urlButton = new JButton(new AbstractAction(name) {
+						@Override
+						public void actionPerformed(ActionEvent event) {
+							if (install) {
+								ModUtil.installMod(e.link());
+							} else {
+								URLUtil.open(URI.create(e.link()));
+							}
+						}
+					});
+					actions.add(urlButton);
+				}
+				JPanel entry = getEntry(description.toString(), e.range(), list.getBackground(), e.source().icon(), actions);
+				list.add(entry);
+			});
+			pane.add(new JScrollPane(list));
+			frame.add(pane);
+		});
+		public static final ContentType<ModDependencyResolver.BreakingModException> INFO_BREAKING_DEP = new ContentType<>((frame, ex) -> {
+			JPanel pane = new JPanel(new BorderLayout());
+			JTextPane title = new JTextPane();
+			title.setBackground(pane.getBackground());
+			title.setEditable(false);
+			int size = ex.getBreaks().size();
+			title.setText("Found " + size + " Error" + (size > 1 ? "s:" : ":"));
+			title.setFont(title.getFont().deriveFont(Font.BOLD, 16f));
+			pane.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
+			pane.add(title, BorderLayout.NORTH);
+
+			Box list = Box.createVerticalBox();
+			ex.getBreaks().forEach(e -> {
+				String description = "Mod %s (%s) breaks with mod %s (%s) for versions matching %s \n(present: %s)".formatted(e.source().id(), e.source().name(), e.broken().id(), e.broken().name(), printVersionRange(e.range()), e.broken().version()) +
+									 "\nSuggested Solution: Install " +
+									 e.range().maxCompatible().or(e.range()::minCompatible).map(Objects::toString)
+											 .map(s -> "0.0.0".equals(s) ? "any version" : "version " + s).orElse("<unknown>") +
+									 " of Mod %s (%s) ".formatted(e.broken().id(), e.broken().name());
+				List<JButton> actions = new ArrayList<>();
+
+				JPanel entry = getEntry(description, e.range(), list.getBackground(), e.source().icon(), actions);
+				entry.setSize(list.getWidth(), entry.getHeight());
+				list.add(entry);
+			});
+			pane.add(new JScrollPane(list));
+			frame.add(pane);
+		});
+		public static final ContentType<Throwable> GENERIC_ERROR = new ContentType<>((frame, throwable) -> {
+			JPanel pane = new JPanel(new BorderLayout());
+
+			JTextPane title = new JTextPane();
+			title.setBackground(pane.getBackground());
+			title.setEditable(false);
+			title.setText("Caught Fatal Error during game startup:");
+			title.setFont(title.getFont().deriveFont(Font.BOLD, 16f));
+			pane.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
+			pane.add(title, BorderLayout.NORTH);
+
+			JTextPane error = new JTextPane();
+			title.setEditable(false);
+			StringWriter writer = new StringWriter();
+			throwable.printStackTrace(new PrintWriter(writer));
+			error.setText(writer.toString());
+
+			pane.add(error);
+
+			frame.add(pane);
+		});
+
+		private final BiConsumer<JFrame, T> contentSetter;
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/launch/AccessWidener.java

@@ -0,0 +1,150 @@
+package dev.frogmc.frogloader.impl.launch;
+
+import java.util.Arrays;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentSkipListSet;
+
+import lombok.AllArgsConstructor;
+import org.objectweb.asm.*;
+
+public class AccessWidener {
+	private static final AccessWidener INSTANCE = new AccessWidener();
+
+	Map<String, Entry> classMap = new ConcurrentHashMap<>();
+	Map<String, Map<String, Entry>> methods = new ConcurrentHashMap<>();
+	Map<String, Map<String, Entry>> fields = new ConcurrentHashMap<>();
+	Map<String, Map<String, Entry>> mutations = new ConcurrentHashMap<>();
+	Set<String> classNames = new ConcurrentSkipListSet<>();
+
+	private static AccessWidener get() {
+		return INSTANCE;
+	}
+
+	public static void load(Data data) {
+		get().loadFromData(data);
+	}
+
+	public static byte[] processClass(byte[] classBytes, String className) {
+		return get().process(classBytes, className);
+	}
+
+	private void loadFromData(Data data) {
+		classMap.putAll(data.classMap);
+		methods.putAll(data.methods);
+		fields.putAll(data.fields);
+		mutations.putAll(data.mutations);
+		classNames.addAll(data.classNames);
+	}
+
+	private byte[] process(byte[] classBytes, String className) {
+		if (!classNames.contains(className)) {
+			return classBytes;
+		}
+
+		ClassReader reader = new ClassReader(classBytes);
+		ClassWriter writer = new ClassWriter(0);
+		ClassVisitor mapper = new ClassVisitor(Opcodes.ASM9, writer) {
+			@Override
+			public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
+				Entry e = classMap.get(className);
+				if (e != null) {
+					access &= ~(Opcodes.ACC_PRIVATE | Opcodes.ACC_PROTECTED | Opcodes.ACC_PUBLIC);
+					access |= e.type.access;
+				}
+				if (fields.containsKey(className) || methods.containsKey(className) || mutations.containsKey(className)) { // make all classes with modifications public as well
+					access &= ~(Opcodes.ACC_PRIVATE | Opcodes.ACC_PROTECTED | Opcodes.ACC_PUBLIC);
+					access |= Opcodes.ACC_PUBLIC;
+				}
+				super.visit(version, access, name, signature, superName, interfaces);
+			}
+
+			@Override
+			public FieldVisitor visitField(int access, String name, String descriptor, String signature, Object value) {
+				Map<String, Entry> map = fields.get(className);
+				if (map != null) {
+					Entry e = map.get(name + descriptor);
+					if (e != null) {
+						access &= ~(Opcodes.ACC_PRIVATE | Opcodes.ACC_PROTECTED | Opcodes.ACC_PUBLIC); // remove all access modifiers
+						access |= e.type.access; // re-add the new one
+					}
+				}
+				if ((map = mutations.get(className)) != null) {
+					var e = map.get(name + descriptor);
+					if (e != null) {
+						access &= ~Opcodes.ACC_FINAL; // always AccessType.MUTABLE
+					}
+				}
+				return super.visitField(access, name, descriptor, signature, value);
+			}
+
+			@Override
+			public MethodVisitor visitMethod(int access, String name, String descriptor, String signature, String[] exceptions) {
+				Map<String, Entry> map = methods.get(className);
+				if (map != null) {
+					Entry e = map.get(name + descriptor);
+					if (e != null) {
+						access &= ~(Opcodes.ACC_PRIVATE | Opcodes.ACC_PROTECTED | Opcodes.ACC_PUBLIC);
+						access |= e.type.access;
+					}
+				}
+				return super.visitMethod(access, name, descriptor, signature, exceptions);
+			}
+		};
+
+		reader.accept(mapper, 0);
+		return writer.toByteArray();
+	}
+
+	@AllArgsConstructor
+	public enum AccessType {
+		ACCESSIBLE("accessible", Opcodes.ACC_PUBLIC),
+		EXTENDABLE("extendable", Opcodes.ACC_PROTECTED),
+		MUTABLE("mutable", ~Opcodes.ACC_FINAL);
+		private final String id;
+		private final int access;
+
+		public static AccessType of(String name) {
+			return Arrays.stream(values()).filter(a -> a.id.equals(name)).findFirst().orElseThrow(() -> new IllegalStateException("Unknown access type: " + name));
+		}
+	}
+
+	@AllArgsConstructor
+	private enum Access {
+		PUBLIC(1), PROTECTED(2), PACKAGE_PRIVATE(3), PRIVATE(4);
+		private final int index;
+
+		public static Access of(int access) {
+			if ((access & Opcodes.ACC_PUBLIC) != 0) {
+				return PUBLIC;
+			}
+			if ((access & Opcodes.ACC_PROTECTED) != 0) {
+				return PROTECTED;
+			}
+			if ((access & Opcodes.ACC_PRIVATE) != 0) {
+				return PRIVATE;
+			}
+			return PACKAGE_PRIVATE;
+		}
+	}
+
+	public record Data(Map<String, Entry> classMap,
+					   Map<String, Map<String, Entry>> methods,
+					   Map<String, Map<String, Entry>> fields,
+					   Map<String, Map<String, Entry>> mutations,
+					   Set<String> classNames) {
+	}
+
+	public record Entry(AccessType type, String targetType, String className, String name, String descriptor) {
+
+		public Entry(String[] line) {
+			this(AccessType.of(line[0]), line[1], line[2], line[3], line[4]);
+		}
+
+		public boolean isAccessGreaterThan(Entry other) {
+			return Access.of(type().access).index < Access.of(other.type.access).index;
+		}
+	}
+
+}

src/main/java/dev/frogmc/frogloader/impl/launch/FrogLauncher.java

@@ -0,0 +1,72 @@
+package dev.frogmc.frogloader.impl.launch;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.util.HashMap;
+import java.util.Map;
+
+import com.llamalad7.mixinextras.MixinExtrasBootstrap;
+import dev.frogmc.frogloader.api.env.Env;
+import dev.frogmc.frogloader.impl.mixin.FrogMixinService;
+import lombok.Getter;
+import org.spongepowered.asm.launch.MixinBootstrap;
+import org.spongepowered.asm.service.IPropertyKey;
+
+public class FrogLauncher {
+
+	@Getter
+	private static FrogLauncher instance;
+	@Getter
+	private final MixinClassLoader targetClassLoader;
+
+	private static final Map<IPropertyKey, Object> globalProperties = new HashMap<>();
+
+	@Getter
+	private final Env env;
+
+	public FrogLauncher(String[] args, Env env) {
+		if (instance != null) {
+			throw new IllegalStateException();
+		}
+		instance = this;
+		this.env = env;
+		targetClassLoader = new MixinClassLoader();
+		targetClassLoader.excludePackage("org.slf4j");
+		targetClassLoader.excludePackage("org.spongepowered");
+		targetClassLoader.excludePackage("org.apache.logging");
+		targetClassLoader.excludePackage("dev.frogmc.frogloader.impl.launch");
+		targetClassLoader.excludePackage("dev.frogmc.frogloader.api.env");
+
+		Thread.currentThread().setContextClassLoader(targetClassLoader);
+
+		System.setProperty("mixin.service", FrogMixinService.class.getName());
+		MixinBootstrap.init();
+		MixinExtrasBootstrap.init();
+
+		try {
+			Class<?> clazz = targetClassLoader.findClass("dev.frogmc.frogloader.impl.FrogLoaderImpl");
+			MethodHandle ctor = MethodHandles.publicLookup().findStatic(clazz, "run", MethodType.methodType(void.class, String[].class, Env.class));
+			ctor.invoke(args, env);
+		} catch (Throwable e) {
+			// TODO
+			throw new RuntimeException(e);
+		}
+	}
+
+	public static void run(String[] args, Env env) {
+		new FrogLauncher(args, env);
+	}
+
+	public void putProperty(IPropertyKey key, Object value){
+		globalProperties.put(key, value);
+	}
+
+	public Object getProperty(IPropertyKey key){
+		return globalProperties.get(key);
+	}
+
+	public Object getProperty(IPropertyKey key, Object defaultValue){
+		return globalProperties.getOrDefault(key, defaultValue);
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/launch/MixinClassLoader.java

@@ -0,0 +1,131 @@
+package dev.frogmc.frogloader.impl.launch;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.List;
+
+import dev.frogmc.frogloader.impl.mixin.FrogMixinService;
+import org.jetbrains.annotations.Nullable;
+import org.spongepowered.asm.mixin.MixinEnvironment;
+
+public class MixinClassLoader extends URLClassLoader {
+
+	private static final ClassLoader SYSTEM = ClassLoader.getSystemClassLoader();
+
+	static {
+		registerAsParallelCapable();
+	}
+
+	private final List<String> exclusions = new ArrayList<>();
+
+	public MixinClassLoader() {
+		super(new URL[0], null);
+		excludePackage("java");
+		excludePackage("com.sun");
+		excludePackage("sun");
+		excludePackage("jdk");
+		excludePackage("javax");
+	}
+
+	public boolean isClassLoaded(String name) {
+		return findLoadedClass(name) != null;
+	}
+
+	public byte[] getClassBytes(String name) throws IOException {
+		String binName = name.replace('.', '/');
+		String path = binName.concat(".class");
+
+		try (InputStream in = getResourceAsStream(path)) {
+			if (in == null)
+				return null;
+
+			return FrogMixinService.getTransformer().transformClass(MixinEnvironment.getCurrentEnvironment(), name, AccessWidener.processClass(in.readAllBytes(), binName));
+		}
+	}
+
+	public void excludePackage(String name) {
+		exclusions.add(name + '.');
+	}
+
+	@Override
+	public void addURL(URL url) {
+		super.addURL(url);
+	}
+
+	@Override
+	protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
+		synchronized (getClassLoadingLock(name)) {
+			for (String prefix : exclusions) {
+				if (name.startsWith(prefix)) {
+					return SYSTEM.loadClass(name);
+				}
+			}
+
+			Class<?> loaded = findLoadedClass(name);
+			if (loaded != null)
+				return loaded;
+
+			Class<?> result = findClass(name);
+
+			if (resolve)
+				resolveClass(result);
+
+			return result;
+		}
+	}
+
+	@Override
+	public synchronized Class<?> findClass(String name) throws ClassNotFoundException {
+		try {
+			byte[] bytes = getClassBytes(name);
+			if (bytes == null)
+				throw new ClassNotFoundException(name);
+
+			return defineClass(name, bytes, 0, bytes.length);
+		} catch (IOException e) {
+			throw new ClassNotFoundException(name, e);
+		}
+	}
+
+	@Nullable
+	@Override
+	public URL getResource(String name) {
+		URL parentUrl = super.getResource(name);
+
+		if (parentUrl != null)
+			return parentUrl;
+
+		return SYSTEM.getResource(name);
+	}
+
+	@Override
+	public Enumeration<URL> getResources(String name) throws IOException {
+		Enumeration<URL> parentResources = super.getResources(name);
+		Enumeration<URL> systemResources = SYSTEM.getResources(name);
+
+		if (parentResources.hasMoreElements() && systemResources.hasMoreElements()) {
+			List<URL> list = new ArrayList<>();
+
+			while (parentResources.hasMoreElements())
+				list.add(parentResources.nextElement());
+
+			while (systemResources.hasMoreElements())
+				list.add(systemResources.nextElement());
+
+			return Collections.enumeration(list);
+		}
+
+		if (parentResources.hasMoreElements())
+			return parentResources;
+
+		if (systemResources.hasMoreElements())
+			return systemResources;
+
+		return Collections.enumeration(Collections.emptyList());
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/launch/client/FrogClient.java

@@ -0,0 +1,11 @@
+package dev.frogmc.frogloader.impl.launch.client;
+
+import dev.frogmc.frogloader.api.env.Env;
+import dev.frogmc.frogloader.impl.launch.FrogLauncher;
+
+public class FrogClient {
+
+	public static void main(String[] args) {
+		FrogLauncher.run(args, Env.CLIENT);
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/launch/server/FrogServer.java

@@ -0,0 +1,11 @@
+package dev.frogmc.frogloader.impl.launch.server;
+
+import dev.frogmc.frogloader.api.env.Env;
+import dev.frogmc.frogloader.impl.launch.FrogLauncher;
+
+public class FrogServer {
+
+	public static void main(String[] args) {
+		FrogLauncher.run(args, Env.SERVER);
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/mixin/AWProcessor.java

@@ -0,0 +1,88 @@
+package dev.frogmc.frogloader.impl.mixin;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.util.Collection;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentSkipListSet;
+import java.util.function.Predicate;
+import java.util.regex.Pattern;
+
+import dev.frogmc.frogloader.api.mod.ModProperties;
+import dev.frogmc.frogloader.impl.launch.AccessWidener;
+import dev.frogmc.frogloader.impl.mod.BuiltinExtensions;
+
+public class AWProcessor {
+
+	private static final String AW_EXTENSION_NAME = BuiltinExtensions.ACCESSWIDENER;
+	private static final Predicate<String> HEADER = Pattern.compile("accessWidener\\s+v[12]\\s+.*").asMatchPredicate();
+	private static final String SEPARATOR = "[\\t ]+";
+
+	public static void load(Collection<ModProperties> mods) {
+		Map<String, AccessWidener.Entry> classMap = new ConcurrentHashMap<>();
+		Map<String, Map<String, AccessWidener.Entry>> methods = new ConcurrentHashMap<>();
+		Map<String, Map<String, AccessWidener.Entry>> fields = new ConcurrentHashMap<>();
+		Map<String, Map<String, AccessWidener.Entry>> mutations = new ConcurrentHashMap<>();
+		Set<String> classNames = new ConcurrentSkipListSet<>();
+
+		mods.stream().map(ModProperties::extensions).map(e -> (String) e.get(AW_EXTENSION_NAME))
+				.filter(Objects::nonNull).map(s -> "/" + s).map(AWProcessor.class::getResourceAsStream).filter(Objects::nonNull)
+				.map(InputStreamReader::new).map(BufferedReader::new).flatMap(BufferedReader::lines)
+				.map(l -> l.contains("#") ? l.split("#")[0] : l).filter(l -> !l.isBlank())
+				.filter(l -> !HEADER.test(l)).distinct()
+				.map(l -> l.replace("transitive-", "")) // ignore all transitive declarations (just make them normal) as they're only relevant for dev envs
+				.map(l -> l.split(SEPARATOR)).filter(l -> l.length > 0).map(AccessWidener.Entry::new).forEach(e -> {
+					classNames.add(e.className());
+					if ("class".equals(e.targetType())) {
+						if (e.type() == AccessWidener.AccessType.MUTABLE) {
+							throw new IllegalArgumentException("aw format error: classes can not have a 'mutable' modifier (at: " + e + ")");
+						}
+						if (!classMap.containsKey(e.className())) {
+							classMap.put(e.className(), e);
+						} else {
+							var other = classMap.get(e.className());
+							if (e.isAccessGreaterThan(other)) {
+								classMap.put(e.className(), e);
+							}
+						}
+					} else if ("method".equals(e.targetType())) {
+						if (e.type() == AccessWidener.AccessType.MUTABLE) {
+							throw new IllegalArgumentException("aw format error: methods can not have a 'mutable' modifier (at: " + e + ")");
+						}
+						var map = methods.computeIfAbsent(e.className(), s -> new ConcurrentHashMap<>());
+						var id = e.name() + e.descriptor();
+						if (!map.containsKey(id)) {
+							map.put(id, e);
+						} else {
+							var other = map.get(id);
+							if (e.isAccessGreaterThan(other)) {
+								classMap.put(id, e);
+							}
+						}
+					} else if ("field".equals(e.targetType())) {
+						if (e.type() == AccessWidener.AccessType.EXTENDABLE) {
+							throw new IllegalArgumentException("aw format error: fields can not have a 'extendable' modifier (at: " + e + ")");
+						}
+						var map = fields.computeIfAbsent(e.className(), s -> new ConcurrentHashMap<>());
+						var id = e.name() + e.descriptor();
+						if (e.type() == AccessWidener.AccessType.MUTABLE) {
+							mutations.computeIfAbsent(e.className(), s -> new ConcurrentHashMap<>()).putIfAbsent(id, e);
+							return;
+						}
+
+						if (!map.containsKey(id)) {
+							map.put(id, e);
+						} else {
+							var other = map.get(id);
+							if (e.isAccessGreaterThan(other)) {
+								classMap.put(id, e);
+							}
+						}
+					}
+				});
+		AccessWidener.load(new AccessWidener.Data(classMap, methods, fields, mutations, classNames));
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/mixin/FrogGlobalPropertyService.java

@@ -0,0 +1,52 @@
+package dev.frogmc.frogloader.impl.mixin;
+
+import dev.frogmc.frogloader.impl.launch.FrogLauncher;
+import org.spongepowered.asm.service.IGlobalPropertyService;
+import org.spongepowered.asm.service.IPropertyKey;
+
+public class FrogGlobalPropertyService implements IGlobalPropertyService {
+	@Override
+	public IPropertyKey resolveKey(String name) {
+		return new IPropertyKey() {
+			@Override
+			public String toString() {
+				return name;
+			}
+
+			@Override
+			public boolean equals(Object other){
+				if (other instanceof IPropertyKey k){
+					return name.equals(k.toString());
+				}
+				return false;
+			}
+
+			@Override
+			public int hashCode(){
+				return name.hashCode();
+			}
+		};
+	}
+
+	@SuppressWarnings("unchecked")
+	@Override
+	public <T> T getProperty(IPropertyKey key) {
+		return (T) FrogLauncher.getInstance().getProperty(key);
+	}
+
+	@Override
+	public void setProperty(IPropertyKey key, Object value) {
+		FrogLauncher.getInstance().putProperty(key, value);
+	}
+
+	@SuppressWarnings("unchecked")
+	@Override
+	public <T> T getProperty(IPropertyKey key, T defaultValue) {
+		return (T) FrogLauncher.getInstance().getProperty(key, defaultValue);
+	}
+
+	@Override
+	public String getPropertyString(IPropertyKey key, String defaultValue) {
+		return FrogLauncher.getInstance().getProperty(key, defaultValue).toString();
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/mixin/FrogMixinLogger.java

@@ -1,4 +1,4 @@
-package org.ecorous.esnesnon.nonsense.loader.impl.mixin;
+package dev.frogmc.frogloader.impl.mixin;
 
 import java.util.Locale;
 import java.util.Map;
@@ -10,29 +10,29 @@ import org.spongepowered.asm.logging.ILogger;
 import org.spongepowered.asm.logging.Level;
 import org.spongepowered.asm.logging.LoggerAdapterAbstract;
 
-public class NonsenseMixinLogger extends LoggerAdapterAbstract {
+public class FrogMixinLogger extends LoggerAdapterAbstract {
-	private static final Map<String, NonsenseMixinLogger> LOGGERS = new ConcurrentHashMap<>();
+	private static final Map<String, FrogMixinLogger> LOGGERS = new ConcurrentHashMap<>();
-
-	public static ILogger get(String name){
-		return LOGGERS.computeIfAbsent(name, NonsenseMixinLogger::new);
-	}
-
 	private final Logger log;
 
-	public NonsenseMixinLogger(String name){
+	public FrogMixinLogger(String name) {
 		super(name);
-		log = LoggerFactory.getLogger("Nonsense Loader/"+name.substring(0, 1).toUpperCase(Locale.ROOT)+name.substring(1));
+		log = LoggerFactory.getLogger("FrogLoader/" + name.substring(0, 1).toUpperCase(Locale.ROOT) + name.substring(1));
+	}
+
+	public static ILogger get(String name) {
+		return LOGGERS.computeIfAbsent(name, FrogMixinLogger::new);
 	}
 
 	@Override
 	public String getType() {
-		return "Nonsense Loader/Mixin Logger";
+		return "FrogLoader/Mixin Logger";
 	}
 
 	@Override
 	public void catching(Level level, Throwable t) {
 		log.atLevel(org.slf4j.event.Level.valueOf(level.name())).setCause(t).log();
 	}
+
 	@Override
 	public void log(Level level, String message, Object... params) {
 		log.atLevel(org.slf4j.event.Level.valueOf(level.name())).log(message, params);

src/main/java/dev/frogmc/frogloader/impl/mixin/FrogMixinService.java

@@ -1,4 +1,4 @@
-package org.ecorous.esnesnon.nonsense.loader.impl.mixin;
+package dev.frogmc.frogloader.impl.mixin;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -7,8 +7,8 @@ import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
 
+import dev.frogmc.frogloader.impl.launch.FrogLauncher;
 import lombok.Getter;
-import org.ecorous.esnesnon.nonsense.loader.impl.launch.Launcher;
 import org.objectweb.asm.ClassReader;
 import org.objectweb.asm.tree.ClassNode;
 import org.spongepowered.asm.launch.platform.container.ContainerHandleVirtual;
@@ -21,7 +21,7 @@ import org.spongepowered.asm.service.*;
 import org.spongepowered.asm.transformers.MixinClassReader;
 import org.spongepowered.asm.util.ReEntranceLock;
 
-public class NonsenseMixinService implements IMixinService, IClassProvider, IClassBytecodeProvider, ITransformerProvider, IClassTracker {
+public class FrogMixinService implements IMixinService, IClassProvider, IClassBytecodeProvider, ITransformerProvider, IClassTracker {
 	@Getter
 	static IMixinTransformer transformer;
 	private final ReEntranceLock lock = new ReEntranceLock(1);
@@ -29,7 +29,7 @@ public class NonsenseMixinService implements IMixinService, IClassProvider, ICla
 
 	@Override
 	public String getName() {
-		return "NonsenseMixinService";
+		return "FrogMixinService";
 	}
 
 	@Override
@@ -56,7 +56,6 @@ public class NonsenseMixinService implements IMixinService, IClassProvider, ICla
 
 	@Override
 	public void init() {
-
 	}
 
 	@Override
@@ -116,12 +115,12 @@ public class NonsenseMixinService implements IMixinService, IClassProvider, ICla
 
 	@Override
 	public InputStream getResourceAsStream(String name) {
-		return Launcher.getInstance().getTargetClassLoader().getResourceAsStream(name);
+		return FrogLauncher.getInstance().getTargetClassLoader().getResourceAsStream(name);
 	}
 
 	@Override
 	public String getSideName() {
-		return Launcher.getInstance().getEnv().getMixinName();
+		return FrogLauncher.getInstance().getEnv().getMixinName();
 	}
 
 	@Override
@@ -136,7 +135,7 @@ public class NonsenseMixinService implements IMixinService, IClassProvider, ICla
 
 	@Override
 	public ILogger getLogger(String name) {
-		return NonsenseMixinLogger.get(name);
+		return FrogMixinLogger.get(name);
 	}
 
 
@@ -150,9 +149,9 @@ public class NonsenseMixinService implements IMixinService, IClassProvider, ICla
 		byte[] bytes;
 		if (runTransformers && transformer != null) {
 			bytes = transformer.transformClass(MixinEnvironment.getCurrentEnvironment(), name,
-					Launcher.getInstance().getTargetClassLoader().getClassBytes(name));
+					FrogLauncher.getInstance().getTargetClassLoader().getClassBytes(name));
 		} else {
-			bytes = Launcher.getInstance().getTargetClassLoader().getClassBytes(name);
+			bytes = FrogLauncher.getInstance().getTargetClassLoader().getClassBytes(name);
 		}
 		ClassReader reader = new MixinClassReader(bytes, name);
 		ClassNode node = new ClassNode();
@@ -168,17 +167,17 @@ public class NonsenseMixinService implements IMixinService, IClassProvider, ICla
 
 	@Override
 	public Class<?> findClass(String name) throws ClassNotFoundException {
-		return Class.forName(name, false, Launcher.getInstance().getTargetClassLoader());
+		return Class.forName(name, false, FrogLauncher.getInstance().getTargetClassLoader());
 	}
 
 	@Override
 	public Class<?> findClass(String name, boolean initialize) throws ClassNotFoundException {
-		return Class.forName(name, initialize, Launcher.getInstance().getTargetClassLoader());
+		return Class.forName(name, initialize, FrogLauncher.getInstance().getTargetClassLoader());
 	}
 
 	@Override
 	public Class<?> findAgentClass(String name, boolean initialize) throws ClassNotFoundException {
-		return Class.forName(name, initialize, Launcher.getInstance().getTargetClassLoader());
+		return Class.forName(name, initialize, FrogLauncher.getInstance().getTargetClassLoader());
 	}
 
 	@Override
@@ -188,7 +187,7 @@ public class NonsenseMixinService implements IMixinService, IClassProvider, ICla
 
 	@Override
 	public boolean isClassLoaded(String className) {
-		return Launcher.getInstance().getTargetClassLoader().isClassLoaded(className);
+		return FrogLauncher.getInstance().getTargetClassLoader().isClassLoaded(className);
 	}
 
 	@Override

src/main/java/dev/frogmc/frogloader/impl/mod/BuiltinExtensions.java

@@ -0,0 +1,12 @@
+package dev.frogmc.frogloader.impl.mod;
+
+import lombok.experimental.UtilityClass;
+
+@UtilityClass
+public class BuiltinExtensions {
+	public final String MIXIN_CONFIG = "mixin_config";
+	public final String INCLUDED_JARS = "included_jars";
+	public final String PRE_LAUNCH = "pre_launch";
+	public final String ACCESSWIDENER = "frog_aw";
+	public final String LOADING_TYPE = "loading_type";
+}

src/main/java/dev/frogmc/frogloader/impl/mod/JavaModProperties.java

@@ -0,0 +1,32 @@
+package dev.frogmc.frogloader.impl.mod;
+
+import java.util.Collections;
+import java.util.Map;
+
+import dev.frogmc.frogloader.api.mod.ModDependencies;
+import dev.frogmc.frogloader.api.mod.ModExtensions;
+import dev.frogmc.frogloader.api.mod.ModProperties;
+import dev.frogmc.frogloader.impl.SemVerParseException;
+
+public class JavaModProperties {
+
+	private static ModProperties INSTANCE;
+
+	private JavaModProperties() {
+
+	}
+
+	public static ModProperties get() throws SemVerParseException {
+		if (INSTANCE == null) {
+			INSTANCE = new ModPropertiesImpl("java",
+					System.getProperty("java.vm.name"),
+					"/duke.png",
+					SemVerImpl.parse(System.getProperty("java.runtime.version")),
+					"",
+					Map.of(System.getProperty("java.vm.vendor"), Collections.singleton("Vendor")),
+					new ModDependencies(Collections.emptySet(), Collections.emptySet(), Collections.emptySet(), Collections.emptySet()),
+					ModExtensions.of(Collections.emptyMap()), Collections.emptySet());
+		}
+		return INSTANCE;
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/mod/ModDependencyResolver.java

@@ -0,0 +1,563 @@
+package dev.frogmc.frogloader.impl.mod;
+
+import java.io.UncheckedIOException;
+import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+
+import dev.frogmc.frogloader.api.mod.ModDependencies;
+import dev.frogmc.frogloader.api.mod.ModProperties;
+import dev.frogmc.frogloader.api.mod.SemVer;
+import dev.frogmc.frogloader.impl.SemVerParseException;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ModDependencyResolver {
+
+	private final static Logger LOGGER = LoggerFactory.getLogger(ModDependencyResolver.class);
+	private static final Pattern COMPARATOR = Pattern.compile("(=|>=|<=|>|<)?(\\d.*)");
+	private final Collection<ModProperties> original;
+	private final Map<String, DependencyEntry> dependencies = new HashMap<>();
+	private final Map<String, DependencyEntry> breakings = new HashMap<>();
+	private final Map<String, DependencyEntry> suggests = new HashMap<>();
+	private final Map<String, ProvidedMod> provides = new HashMap<>();
+	private final Map<String, ModProperties> presentMods = new HashMap<>();
+
+	public ModDependencyResolver(Collection<ModProperties> mods) throws ResolverException {
+		this.original = Collections.unmodifiableCollection(mods);
+		load();
+	}
+
+	private void load() throws ResolverException {
+		for (ModProperties props : original) {
+			for (ModDependencies.Entry entry : props.dependencies().getForType(ModDependencies.Type.DEPEND)) {
+				dependencies.put(entry.id(), new DependencyEntry(entry.range(), props, entry.link(), entry.name()));
+			}
+			for (ModDependencies.Entry entry : props.dependencies().getForType(ModDependencies.Type.BREAK)) {
+				breakings.put(entry.id(), new DependencyEntry(entry.range(), props, entry.link(), entry.name()));
+			}
+			for (ModDependencies.Entry entry : props.dependencies().getForType(ModDependencies.Type.SUGGEST)) {
+				suggests.put(entry.id(), new DependencyEntry(entry.range(), props, entry.link(), entry.name()));
+			}
+			props.dependencies().getForType(ModDependencies.Type.PROVIDE).forEach(e -> {
+				try {
+					provides.put(e.id(), new ProvidedMod(e.id(), SemVerImpl.parse(e.range()), props));
+				} catch (SemVerParseException ex) {
+					LOGGER.warn("Version for {} ({}), provided by mod '{}' ({}) does not meet SemVer specifications. Mod will not be provided.",
+							e.id(), e.range(), props.id(), props.name());
+				}
+			});
+			presentMods.put(props.id(), props);
+		}
+	}
+
+	public Collection<ModProperties> solve() throws UnfulfilledDependencyException, BreakingModException {
+		// Step 1: Combine present and provided mods, always use the latest version available
+		Map<String, SemVer> presentOrProvided = new HashMap<>();
+		presentMods.forEach((s, modProperties) -> presentOrProvided.put(s, modProperties.version()));
+		provides.forEach((s, ver) -> {
+			if (presentMods.containsKey(s)) {
+				if (presentMods.get(s).version().compareTo(ver.version()) < 0) {
+					presentOrProvided.replace(s, ver.version());
+				}
+			} else {
+				presentOrProvided.put(s, ver.version());
+			}
+		});
+
+		// Step 2: look for breakage declarations
+		Collection<BreakingModException.Entry> breaks = new HashSet<>();
+		for (Map.Entry<String, DependencyEntry> e : breakings.entrySet()) {
+			String key = e.getKey();
+			DependencyEntry dependencyEntry = e.getValue();
+			if (presentOrProvided.containsKey(key) && dependencyEntry.range.versionMatches(presentOrProvided.get(key))) {
+				breaks.add(new BreakingModException.Entry(dependencyEntry.origin(), Optional.ofNullable(presentMods.get(key)).orElseGet(() -> provides.get(key).source()), dependencyEntry.range));
+			}
+		}
+
+		if (!breaks.isEmpty()) {
+			breaks.forEach(e ->
+					LOGGER.error("Mod {} ({}) breaks with mod {} ({}) for versions matching {}", e.source().id(), e.source().name(), e.broken().id(), e.broken().name(), e.range()));
+			throw new BreakingModException(breaks);
+		}
+
+
+		Set<ModProperties> result = new HashSet<>();
+
+
+		// Step 3: print out information about suggested mods
+		for (Map.Entry<String, DependencyEntry> e : suggests.entrySet()) {
+			String key = e.getKey();
+			DependencyEntry v = e.getValue();
+			if (!presentOrProvided.containsKey(key) || !v.range.versionMatches(presentOrProvided.get(key))) {
+				LOGGER.info("Mod '{}' ({}) suggests range {} of {}, you should install a matching version for the optimal experience!",
+						v.origin().id(), v.origin().name(), v.range(), key);
+			}
+		}
+
+		// Step 4.1: Add all mods to the result that do not depend on any other mods
+		presentMods.forEach((s, modProperties) -> {
+			if (modProperties.dependencies().getForType(ModDependencies.Type.DEPEND).isEmpty()) {
+				result.add(modProperties);
+			}
+		});
+
+		Collection<UnfulfilledDependencyException.Entry> unfulfilled = new HashSet<>();
+		// Step 4.2: Check that all dependencies are satisfied by present or provided mods.
+		for (Map.Entry<String, DependencyEntry> entry : dependencies.entrySet()) {
+			String s = entry.getKey();
+			DependencyEntry value = entry.getValue();
+			if (!(presentMods.containsKey(s) && value.range.versionMatches(presentOrProvided.get(s)))) { // The dependency isn't fulfilled by any present mods
+				if (!(provides.containsKey(s) && value.range.versionMatches(provides.get(s).version()))) { // The dependency also isn't fulfilled by any provided mods
+					if (value.origin.extensions().getOrDefault(BuiltinExtensions.LOADING_TYPE, "required").equals("required")) {
+						unfulfilled.add(new UnfulfilledDependencyException.Entry(value.origin, s, value.range, presentOrProvided.get(s), value.link(), value.name()));
+					} else {
+						continue;
+					}
+				}
+			}
+			// as there hasn't been thrown an exception the dependency must have been fulfilled, add the mod that set the dependency
+			result.add(value.origin());
+		}
+
+		if (!unfulfilled.isEmpty()) {
+			unfulfilled.forEach(e -> {
+				if (e.presentVersion() == null) {
+					LOGGER.error("Mod {} ({}) depends on mod {} with a version matching {} (No version available)", e.source().id(), e.source().name(), e.dependency(), e.range());
+				} else {
+					LOGGER.error("Mod {} ({}) depends on mod {} with a version matching {}, but a different version is present or provided: {}", e.source().id(), e.source().name(), e.dependency(), e.range(), e.presentVersion());
+				}
+			});
+			throw new UnfulfilledDependencyException(unfulfilled);
+		}
+
+		return result;
+	}
+
+	@AllArgsConstructor
+	private enum DependencyType {
+		EQ("=", Object::equals),
+		GE(">=", (a, b) -> a.compareTo(b) >= 0),
+		LE("<=", (a, b) -> a.compareTo(b) <= 0),
+		GT(">", (a, b) -> a.compareTo(b) > 0),
+		LT("<", (a, b) -> a.compareTo(b) < 0),
+
+		;
+		private final String prefix;
+		private final TypeComparator comparator;
+
+		private static DependencyType of(String comparator) {
+			return Arrays.stream(values()).filter(t -> t.prefix.equals(comparator)).findFirst().orElse(DependencyType.EQ);
+		}
+
+		private interface TypeComparator {
+			boolean compare(SemVer a, SemVer b);
+		}
+	}
+
+	private record ProvidedMod(String modId, SemVer version, ModProperties source) {
+	}
+
+	@Getter
+	public static class BreakingModException extends Exception {
+		private final Collection<Entry> breaks;
+
+		public BreakingModException(Collection<Entry> breaks) {
+			super(breaks.stream()
+					.map(e -> "Mod %s (%s) breaks with mod %s (%s) for versions matching %s".formatted(e.source().id(),
+							e.source().name(), e.broken().id(), e.broken().name(), e.range()))
+					.collect(Collectors.joining("\n")));
+			this.breaks = breaks;
+		}
+
+		public record Entry(ModProperties source, ModProperties broken, VersionRange range) {
+
+		}
+	}
+
+	@Getter
+	public static class UnfulfilledDependencyException extends Exception {
+		private final Collection<Entry> dependencies;
+
+		public UnfulfilledDependencyException(Collection<Entry> dependencies) {
+			super(dependencies.stream().map(e -> {
+				if (e.presentVersion() == null) {
+					return "Mod %s (%s) depends on mod %s with a version matching %s (No version available)".formatted(e.source().id(), e.source().name(), e.dependency(), e.range());
+				} else {
+					return "Mod %s (%s) depends on mod %s with a version matching %s, but a different version is present or provided: %s".formatted(e.source().id(), e.source().name(), e.dependency(), e.range(), e.presentVersion());
+				}
+			}).collect(Collectors.joining("\n")));
+			this.dependencies = dependencies;
+		}
+
+		public record Entry(ModProperties source, String dependency, VersionRange range, SemVer presentVersion,
+							@Nullable String link, String dependencyName) {
+		}
+	}
+
+	public static class ResolverException extends Exception {
+		public ResolverException(String message) {
+			super(message);
+		}
+	}
+
+	private record DependencyEntry(VersionRange range, ModProperties origin, String link, String name) {
+
+		public DependencyEntry(String range, ModProperties origin, @Nullable String link, @Nullable String name) throws ResolverException {
+			this(VersionRange.parse(range), origin, link, name);
+		}
+	}
+
+	private record Comparator(DependencyType type, SemVer version) {
+
+		public static Comparator parse(String comparator) {
+			Matcher matcher = COMPARATOR.matcher(comparator);
+			if (!matcher.find()) {
+				throw new IllegalArgumentException(comparator);
+			}
+			var type = DependencyType.of(matcher.group(1));
+			StringBuilder version = new StringBuilder(matcher.group(2));
+
+			while (version.length() < 5) {
+				if (version.charAt(version.length() - 1) == '.') {
+					version.append('0');
+				} else {
+					version.append('.');
+				}
+			}
+
+			try {
+				return new Comparator(type, SemVerImpl.parse(version.toString()));
+			} catch (SemVerParseException e) {
+				throw new UncheckedIOException(e);
+			}
+		}
+
+		public boolean versionMatches(SemVer version) {
+			return type.comparator.compare(version, this.version);
+		}
+
+		@Override
+		public String toString() {
+			return type.prefix + version;
+		}
+
+		public SemVer maxCompatible() {
+			return switch (type) {
+				case GT -> null;
+				case LT -> {
+					if (version.patch() > 0) {
+						yield new SemVerImpl(version.major(), version().minor(), version().patch() - 1, version.prerelease(), version.build());
+					}
+					if (version.minor() > 0) {
+						yield new SemVerImpl(version.major(), version().minor() - 1, version().patch(), version.prerelease(), version.build());
+					}
+					yield new SemVerImpl(version.major() - 1, version().minor(), version().patch(), version.prerelease(), version.build());
+				}
+				default -> version;
+			};
+		}
+
+		public SemVer minCompatible() {
+			return switch (type) {
+				case LT -> {
+					if (version.patch() > 0) {
+						yield new SemVerImpl(version.major(), version().minor(), version().patch() - 1, version.prerelease(), version.build());
+					}
+					if (version.minor() > 0) {
+						yield new SemVerImpl(version.major(), version().minor() - 1, version().patch(), version.prerelease(), version.build());
+					}
+					yield new SemVerImpl(version.major() - 1, version().minor(), version().patch(), version.prerelease(), version.build());
+				}
+				case GT -> {
+					if (version.patch() > 0) {
+						yield new SemVerImpl(version.major(), version().minor(), version().patch() + 1, version.prerelease(), version.build());
+					}
+					if (version.minor() > 0) {
+						yield new SemVerImpl(version.major(), version().minor() + 1, version().patch(), version.prerelease(), version.build());
+					}
+					yield new SemVerImpl(version.major() + 1, version().minor(), version().patch(), version.prerelease(), version.build());
+				}
+				default -> version;
+			};
+		}
+	}
+
+	private record ComparatorSet(Collection<Comparator> comparators) {
+
+		public static ComparatorSet parse(String set) {
+			String[] comparators = set.split(" ");
+			return new ComparatorSet(Arrays.stream(comparators).map(Comparator::parse).toList());
+		}
+
+		public boolean versionMatches(SemVer version) {
+			return comparators.stream().allMatch(c -> c.versionMatches(version));
+		}
+
+		@Override
+		public String toString() {
+			return comparators.stream().map(Objects::toString).collect(Collectors.joining(" "));
+		}
+
+		public SemVer maxCompatible() {
+			return comparators.stream().map(Comparator::maxCompatible).filter(Objects::nonNull).max(Comparable::compareTo).orElse(null);
+		}
+
+		public SemVer minCompatible() {
+			return comparators.stream().map(Comparator::minCompatible).filter(Objects::nonNull).min(Comparable::compareTo).orElse(null);
+		}
+	}
+
+	public record VersionRange(Collection<ComparatorSet> sets) {
+
+		private static final Pattern NUMBER_EXTRACTOR = Pattern.compile("[^~]?(\\d+)(?:\\.(?:([\\dxX*]+)(?:\\.([\\dxX*]+)?)?)?)?(.*)");
+
+		public static VersionRange parse(String range) throws ResolverException {
+
+			String[] sets = resolveAdvanced(range).split("\\|\\|");
+
+			return new VersionRange(Arrays.stream(sets).map(ComparatorSet::parse).toList());
+		}
+
+		private static String resolveAdvanced(String range) throws ResolverException {
+			if (range.isEmpty() || range.equals("*")) {
+				return ">=0.0.0";
+			}
+
+			List<String> list = extractRanges(range);
+
+			List<String> ranges = new LinkedList<>();
+			for (int i = 0, listSize = list.size(); i < listSize; i++) {
+				String s = list.get(i);
+
+				if (i < listSize - 1 && list.get(i + 1).equals("-")) {
+					handleHyphenRange(s, ranges, list.get(i + 2));
+					i += 2;
+				} else if (s.startsWith("~")) {
+					handleTilde(s, ranges);
+				} else if (s.startsWith("^")) {
+					handleCaret(s, ranges);
+				} else if (s.contains("x") || s.contains("X") || s.contains("*")) {
+					handleXRanges(s, ranges);
+				} else {
+					ranges.add(s);
+				}
+			}
+			range = String.join("", ranges);
+
+			return range;
+		}
+
+		private static void handleTilde(String s, List<String> ranges) throws ResolverException {
+			{
+				StringBuilder builder = new StringBuilder(">=" + s.substring(1));
+				while (builder.length() < 7) {
+					if (builder.charAt(builder.length() - 1) == '.') {
+						builder.append('0');
+					} else {
+						builder.append('.');
+					}
+				}
+				ranges.add(builder.toString());
+			}
+			ranges.add(" ");
+
+			Matcher matcher = NUMBER_EXTRACTOR.matcher(s);
+			if (!matcher.find()) {
+				throw new ResolverException("Version " + s + " did not match the required pattern to find the numbers within!");
+			}
+			int major = Integer.parseInt(matcher.group(1));
+			int minor = Optional.ofNullable(matcher.group(2)).map(Integer::parseInt).orElse(0);
+
+			if (minor > 0) {
+				ranges.add("<" + major + "." + (minor + 1) + ".0");
+			} else {
+				ranges.add("<" + (major + 1) + ".0.0");
+			}
+		}
+
+		private static void handleXRanges(String s, List<String> ranges) throws ResolverException {
+			{
+				StringBuilder builder = new StringBuilder(">=" + s.replaceAll("[xX*]", "0"));
+				while (builder.length() < 7) {
+					if (builder.charAt(builder.length() - 1) == '.') {
+						builder.append('0');
+					} else {
+						builder.append('.');
+					}
+				}
+				ranges.add(builder.toString());
+			}
+
+			ranges.add(" ");
+
+			if (s.length() < 5) {
+				Matcher matcher = NUMBER_EXTRACTOR.matcher(s);
+				if (!matcher.find()) {
+					throw new ResolverException("Version " + s + " did not match the required pattern to find the numbers within!");
+				}
+				int major = Integer.parseInt(matcher.group(1));
+				int minor = Optional.ofNullable(matcher.group(2)).map(n -> n.equalsIgnoreCase("x") || n.equals("*") ? null : n).map(Integer::parseInt).orElse(0);
+				int patch = Optional.ofNullable(matcher.group(3)).map(n -> n.equalsIgnoreCase("x") || n.equals("*") ? null : n).map(Integer::parseInt).orElse(0);
+				StringBuilder builder = new StringBuilder("<");
+				int[] ints = new int[]{major, minor, patch};
+				for (int j = 0, intsLength = ints.length; j < intsLength; j++) {
+					int x = ints[j];
+					if (x < intsLength - 1 && ints[j + 1] > 0) {
+						builder.append(x);
+					} else {
+						builder.append(x + 1);
+						break;
+					}
+				}
+				while (builder.length() < 6) {
+					if (builder.charAt(builder.length() - 1) == '.') {
+						builder.append('0');
+					} else {
+						builder.append('.');
+					}
+				}
+				ranges.add(builder.toString());
+			}
+		}
+
+		private static void handleCaret(String s, List<String> ranges) throws ResolverException {
+			Matcher matcher = NUMBER_EXTRACTOR.matcher(s);
+			if (!matcher.find()) {
+				throw new ResolverException("Version " + s + " did not match the required pattern to find the numbers within!");
+			}
+			int major = Integer.parseInt(matcher.group(1));
+			int minor = Optional.ofNullable(matcher.group(2)).map(n -> n.equalsIgnoreCase("x") || n.equals("*") ? null : n).map(Integer::parseInt).orElse(0);
+			int patch = Optional.ofNullable(matcher.group(3)).map(n -> n.equalsIgnoreCase("x") || n.equals("*") ? null : n).map(Integer::parseInt).orElse(0);
+			String rest = matcher.group(4);
+
+			ranges.add(">=" + major + "." + minor + "." + patch + rest);
+			ranges.add(" ");
+			StringBuilder builder = new StringBuilder("<");
+			for (int x : new int[]{major, minor, patch}) {
+				if (x <= 0) {
+					builder.append(x);
+				} else {
+					builder.append(x + 1);
+					break;
+				}
+			}
+			while (builder.length() < 6) {
+				if (builder.charAt(builder.length() - 1) == '.') {
+					builder.append('0');
+				} else {
+					builder.append('.');
+				}
+			}
+			ranges.add(builder.toString());
+		}
+
+		private static void handleHyphenRange(String s, List<String> ranges, String end) throws ResolverException {
+			{
+				StringBuilder builder = new StringBuilder(">=" + s);
+				while (builder.length() < 7) {
+					if (builder.charAt(builder.length() - 1) == '.') {
+						builder.append('0');
+					} else {
+						builder.append('.');
+					}
+				}
+				ranges.add(builder.toString());
+				ranges.add(" ");
+			}
+
+			if (end.length() < 5) {
+				Matcher matcher = NUMBER_EXTRACTOR.matcher(end);
+				if (!matcher.find()) {
+					throw new ResolverException("Version " + s + " did not match the required pattern to find the numbers within!");
+				}
+				int major = Integer.parseInt(matcher.group(1));
+				int minor = Optional.ofNullable(matcher.group(2)).map(Integer::parseInt).orElse(0);
+				int patch = Optional.ofNullable(matcher.group(3)).map(Integer::parseInt).orElse(0);
+				StringBuilder builder = new StringBuilder("<");
+				int[] ints = new int[]{major, minor, patch};
+				for (int j = 0, intsLength = ints.length; j < intsLength; j++) {
+					int x = ints[j];
+					if (x < intsLength - 1 && ints[j + 1] > 0) {
+						builder.append(x);
+					} else {
+						builder.append(x + 1);
+						break;
+					}
+				}
+				while (builder.length() < 6) {
+					if (builder.charAt(builder.length() - 1) == '.') {
+						builder.append('0');
+					} else {
+						builder.append('.');
+					}
+				}
+				ranges.add(builder.toString());
+			} else {
+				ranges.add("<=" + end);
+			}
+		}
+
+		private static @NotNull List<String> extractRanges(String range) {
+			if (!range.contains(" ") && !range.contains(" - ") && !range.contains("||")) {
+				return List.of(range);
+			}
+			List<String> parts = new ArrayList<>();
+			for (String p : range.split(" - ")) {
+				if (!parts.isEmpty()) {
+					parts.add("-");
+				}
+				parts.add(p.trim());
+			}
+			List<String> moreParts = new ArrayList<>();
+			parts.forEach(s -> {
+				if (!s.contains("||")) {
+					moreParts.add(s);
+					return;
+				}
+				for (String p : s.split("\\|\\|")) {
+					if (!moreParts.isEmpty()) {
+						moreParts.add("||");
+					}
+					moreParts.add(p.trim());
+				}
+			});
+			List<String> list = new ArrayList<>();
+			moreParts.forEach(s -> {
+				if (!s.contains(" ")) {
+					list.add(s);
+					return;
+				}
+				for (String p : s.split(" ")) {
+					if (!list.isEmpty()) {
+						list.add(" ");
+					}
+					list.add(p.trim());
+				}
+			});
+			return list;
+		}
+
+		public boolean versionMatches(SemVer version) {
+			return sets.stream().anyMatch(c -> c.versionMatches(version));
+		}
+
+		@Override
+		public String toString() {
+			return sets.stream().map(Objects::toString).collect(Collectors.joining(" || "));
+		}
+
+		public Optional<SemVer> maxCompatible() {
+			return sets.stream().map(ComparatorSet::maxCompatible).filter(Objects::nonNull).max(Comparable::compareTo);
+		}
+
+		public Optional<SemVer> minCompatible() {
+			return sets.stream().map(ComparatorSet::minCompatible).filter(Objects::nonNull).min(Comparable::compareTo);
+		}
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/mod/ModPropertiesImpl.java

@@ -0,0 +1,15 @@
+package dev.frogmc.frogloader.impl.mod;
+
+import java.nio.file.Path;
+import java.util.Collection;
+import java.util.Map;
+
+import dev.frogmc.frogloader.api.mod.ModDependencies;
+import dev.frogmc.frogloader.api.mod.ModExtensions;
+import dev.frogmc.frogloader.api.mod.ModProperties;
+import dev.frogmc.frogloader.api.mod.SemVer;
+
+public record ModPropertiesImpl(String id, String name, String icon, SemVer version, String license,
+								Map<String, Collection<String>> credits, ModDependencies dependencies,
+								ModExtensions extensions, Collection<Path> paths) implements ModProperties {
+}

src/main/java/dev/frogmc/frogloader/impl/mod/ModPropertiesReader.java

@@ -0,0 +1,138 @@
+package dev.frogmc.frogloader.impl.mod;
+
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.net.URL;
+import java.nio.file.FileSystem;
+import java.nio.file.FileSystems;
+import java.nio.file.Path;
+import java.util.*;
+import java.util.stream.Collectors;
+
+import com.electronwill.nightconfig.core.CommentedConfig;
+import com.electronwill.nightconfig.core.UnmodifiableConfig;
+import com.electronwill.nightconfig.core.file.FileNotFoundAction;
+import com.electronwill.nightconfig.toml.TomlParser;
+import dev.frogmc.frogloader.api.mod.ModDependencies;
+import dev.frogmc.frogloader.api.mod.ModExtensions;
+import dev.frogmc.frogloader.api.mod.ModProperties;
+import lombok.AllArgsConstructor;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ModPropertiesReader {
+	public static final String PROPERTIES_FILE_NAME = "frog.mod.toml";
+	private static final Logger LOGGER = LoggerFactory.getLogger(ModPropertiesReader.class);
+	private static final TomlParser PARSER = new TomlParser();
+
+	public static Optional<ModProperties> read(Path mod) {
+
+		try (FileSystem fs = FileSystems.newFileSystem(mod)) {
+			CommentedConfig props = PARSER.parse(fs.getPath(PROPERTIES_FILE_NAME), FileNotFoundAction.THROW_ERROR);
+
+			return Optional.of(readProperties(props, Collections.singleton(mod)));
+		} catch (IOException e) {
+			LOGGER.warn("Failed to read mod properties: ", e);
+		}
+
+		return Optional.empty();
+	}
+
+	public static Optional<ModProperties> readFile(URL in) {
+		CommentedConfig props = PARSER.parse(in);
+
+		try {
+			String url = in.toString();
+			Path source = Path.of(url.substring(url.lastIndexOf(":")+1).split("!")[0]).toAbsolutePath();
+			if (!source.getFileName().toString().endsWith(".jar")){
+				source = source.getParent();
+			} else {
+				// TODO will this result in a memory leak?
+				FileSystem fs = FileSystems.newFileSystem(source);
+				source = fs.getPath("/");
+			}
+			return Optional.of(readProperties(props, Collections.singleton(source)));
+		} catch (Exception e) {
+			LOGGER.warn("Failed to read mod properties from "+in+": ", e);
+		}
+		return Optional.empty();
+	}
+
+	private static ModProperties readProperties(UnmodifiableConfig config, Collection<Path> sources) {
+		String manifestVer = config.get("frog.format_version");
+
+		try {
+			return FormatVersion.get(manifestVer).parse(config, sources);
+		} catch (IOException e) {
+			throw new UncheckedIOException(e);
+		}
+	}
+
+	@AllArgsConstructor
+	private enum FormatVersion {
+		V1_0_0("1.0.0", (config, sources) -> {
+			String id = config.get("frog.mod.id");
+			String name = config.get("frog.mod.name");
+			String icon = config.get("frog.mod.icon");
+			String version = config.get("frog.mod.version");
+			String license = config.get("frog.mod.license");
+
+			if (license == null) {
+				license = "";
+			}
+
+			List<UnmodifiableConfig> creditsList = config.get("frog.mod.credits");
+			Map<String, Collection<String>> credits = new HashMap<>();
+			if (creditsList != null) {
+				creditsList.forEach(c -> credits.put(c.get("name"), c.get("roles")));
+			}
+
+			Collection<ModDependencies.Entry> depends = new HashSet<>();
+			List<UnmodifiableConfig> dependsConfig = config.get("frog.dependencies.depends");
+			if (dependsConfig != null) {
+				dependsConfig.forEach(entry -> depends.add(new ModDependencies.Entry(entry.get("id"), entry.get("versions"), entry.get("link"), entry.get("name"))));
+			}
+
+			Collection<ModDependencies.Entry> breaks = new HashSet<>();
+			List<UnmodifiableConfig> breaksConfig = config.get("frog.dependencies.breaks");
+			if (breaksConfig != null) {
+				breaksConfig.forEach(entry -> breaks.add(new ModDependencies.Entry(entry.get("id"), entry.get("versions"), entry.get("link"), entry.get("name"))));
+			}
+
+			Collection<ModDependencies.Entry> suggests = new HashSet<>();
+			List<UnmodifiableConfig> suggestsConfig = config.get("frog.dependencies.suggests");
+			if (suggestsConfig != null) {
+				suggestsConfig.forEach(entry -> suggests.add(new ModDependencies.Entry(entry.get("id"), entry.get("versions"), entry.get("link"), entry.get("name"))));
+			}
+
+			Collection<ModDependencies.Entry> provides = new HashSet<>();
+			List<UnmodifiableConfig> providesConfig = config.get("frog.dependencies.provides");
+			if (providesConfig != null) {
+				providesConfig.forEach(entry -> provides.add(new ModDependencies.Entry(entry.get("id"), entry.get("version"), entry.get("link"), entry.get("name"))));
+			}
+
+			UnmodifiableConfig extensionsConfig = config.get("frog.extensions");
+			Map<String, Object> extensions = new HashMap<>();
+			if (extensionsConfig != null) {
+				extensionsConfig.entrySet().forEach(entry -> extensions.put(entry.getKey(), entry.getValue()));
+			}
+
+			return new ModPropertiesImpl(id, name, icon, SemVerImpl.parse(version), license, Collections.unmodifiableMap(credits),
+					new ModDependencies(depends, breaks, suggests, provides), ModExtensions.of(extensions), sources);
+		});
+
+		private static final Map<String, Parser> versions = Arrays.stream(values()).collect(Collectors.toMap(v -> v.version, v -> v.parser));
+		private final String version;
+		private final Parser parser;
+
+		public static Parser get(String version) {
+			return versions.get(version);
+		}
+
+		@FunctionalInterface
+		public interface Parser {
+			ModProperties parse(UnmodifiableConfig config, Collection<Path> sources) throws IOException;
+		}
+	}
+}
+

src/main/java/dev/frogmc/frogloader/impl/mod/ModUtil.java

@@ -0,0 +1,50 @@
+package dev.frogmc.frogloader.impl.mod;
+
+import java.io.IOException;
+import java.net.URI;
+import java.nio.file.Files;
+import java.util.Collection;
+
+import dev.frogmc.frogloader.api.FrogLoader;
+import dev.frogmc.frogloader.api.mod.ModProperties;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ModUtil {
+
+	private static final Logger LOGGER = LoggerFactory.getLogger(ModUtil.class);
+
+	public static String getModList(Collection<ModProperties> mods) {
+		int size = mods.size();
+		if (size == 0) {
+			return "No mods loaded.";
+		}
+
+		StringBuilder builder = new StringBuilder();
+		builder.append("Loaded ").append(size).append(" mod");
+		if (size > 1) {
+			builder.append("s");
+		}
+		builder.append(":");
+		int i = 0;
+		for (ModProperties p : mods) {
+			builder.append("\n\t");
+			if (i < size - 1) {
+				builder.append("|- ");
+			} else {
+				builder.append("\\- ");
+			}
+			builder.append(p.id()).append(" (").append(p.name()).append(") ").append(" ").append(p.version());
+			i++;
+		}
+		return builder.toString();
+	}
+
+	public static void installMod(String url) {
+		try {
+			Files.copy(URI.create(url).toURL().openStream(), FrogLoader.getInstance().getModsDir().resolve(url.substring(url.lastIndexOf("/" + 1))));
+		} catch (IOException e) {
+			LOGGER.error("Failed to install mod:", e);
+		}
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/mod/SemVerImpl.java

@@ -1,4 +1,4 @@
-package org.ecorous.esnesnon.nonsense.loader.api.mod;
+package dev.frogmc.frogloader.impl.mod;
 
 import java.util.List;
 import java.util.Objects;
@@ -6,10 +6,11 @@ import java.util.function.IntSupplier;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import dev.frogmc.frogloader.api.mod.SemVer;
+import dev.frogmc.frogloader.impl.SemVerParseException;
 import lombok.NonNull;
-import org.ecorous.esnesnon.nonsense.loader.impl.SemVerParseException;
 
-public record SemVer(int major, int minor, int patch, String prerelease, String build) implements Comparable<SemVer> {
+public record SemVerImpl(int major, int minor, int patch, String prerelease, String build) implements SemVer {
 	// Adapted from https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string
 	private static final Pattern SEMVER_PATTERN = Pattern.compile("^(?<major>0|[1-9]\\d*)\\." +
 																  "(?<minor>0|[1-9]\\d*)\\." +
@@ -29,17 +30,17 @@ public record SemVer(int major, int minor, int patch, String prerelease, String
 		int patch = Integer.parseInt(matcher.group("patch"));
 		String prerelease = matcher.group("prerelease");
 		String buildmetadata = matcher.group("buildmetadata");
-		return new SemVer(major, minor, patch, prerelease, buildmetadata);
+		return new SemVerImpl(major, minor, patch, prerelease, buildmetadata);
 	}
 
 	@Override
 	public String toString() {
 		StringBuilder b = new StringBuilder();
-		b.append(major).append(minor).append(patch);
+		b.append(major).append(".").append(minor).append(".").append(patch);
-		if (prerelease != null){
+		if (prerelease != null) {
 			b.append("-").append(prerelease);
 		}
-		if (build != null){
+		if (build != null) {
 			b.append("+").append(build);
 		}
 		return b.toString();
@@ -47,10 +48,10 @@ public record SemVer(int major, int minor, int patch, String prerelease, String
 
 	@Override
 	public boolean equals(Object obj) {
-		if (obj instanceof SemVer s) {
+		if (obj instanceof SemVerImpl s) {
 			return compareTo(s) == 0;
 		}
-		return false;
+		return toString().equals(obj.toString());
 	}
 
 	@Override
@@ -62,10 +63,10 @@ public record SemVer(int major, int minor, int patch, String prerelease, String
 	public int compareTo(@NonNull SemVer o) {
 		int i;
 		List<IntSupplier> suppliers = List.of(
-				() -> Integer.compare(major, o.major),
+				() -> Integer.compare(major, o.major()),
-				() -> Integer.compare(minor, o.minor),
+				() -> Integer.compare(minor, o.minor()),
-				() -> Integer.compare(patch, o.patch),
+				() -> Integer.compare(patch, o.patch()),
-				() -> prerelease != null ? o.prerelease != null ? 0 : -1 : o.prerelease != null ? 1 : 0
+				() -> prerelease != null ? o.prerelease() != null ? 0 : -1 : o.prerelease() != null ? 1 : 0
 		);
 		for (IntSupplier comparison : suppliers) {
 			if ((i = comparison.getAsInt()) != 0) {
@@ -73,16 +74,20 @@ public record SemVer(int major, int minor, int patch, String prerelease, String
 			}
 		}
 
-		String[] self = prerelease.split("\\.");
+		if (prerelease == null) {
-		String[] other = o.prerelease.split("\\.");
+			return 0;
+		}
 
-		for (int index = 0;index<Math.min(self.length, other.length);index++){
+		String[] self = prerelease.split("\\.");
+		String[] other = o.prerelease().split("\\.");
+
+		for (int index = 0; index < Math.min(self.length, other.length); index++) {
 			boolean selfNumeric = self[index].matches("\\d+");
 			boolean otherNumeric = other[index].matches("\\d+");
-			if (selfNumeric != otherNumeric){
+			if (selfNumeric != otherNumeric) {
 				return selfNumeric ? -1 : 1;
-			} else if (!selfNumeric){
+			} else if (!selfNumeric) {
-				if ((i = self[index].compareTo(other[index])) != 0){
+				if ((i = self[index].compareTo(other[index])) != 0) {
 					return i;
 				}
 			}

src/main/java/dev/frogmc/frogloader/impl/plugin/game/minecraft/Minecraft.java

@@ -0,0 +1,206 @@
+package dev.frogmc.frogloader.impl.plugin.game.minecraft;
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.nio.file.*;
+import java.util.*;
+
+import com.google.gson.JsonObject;
+import dev.frogmc.frogloader.api.FrogLoader;
+import dev.frogmc.frogloader.api.extensions.PreLaunchExtension;
+import dev.frogmc.frogloader.api.mod.ModDependencies;
+import dev.frogmc.frogloader.api.mod.ModExtensions;
+import dev.frogmc.frogloader.api.mod.ModProperties;
+import dev.frogmc.frogloader.api.plugin.FrogPlugin;
+import dev.frogmc.frogloader.impl.Discovery;
+import dev.frogmc.frogloader.impl.FrogLoaderImpl;
+import dev.frogmc.frogloader.impl.gui.LoaderGui;
+import dev.frogmc.frogloader.impl.mixin.AWProcessor;
+import dev.frogmc.frogloader.impl.mod.*;
+import dev.frogmc.frogloader.impl.util.CrashReportGenerator;
+import dev.frogmc.frogloader.impl.util.SystemProperties;
+import dev.frogmc.thyroxine.Thyroxine;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.spongepowered.asm.mixin.Mixins;
+
+public class Minecraft implements FrogPlugin {
+
+	protected static final String[] MINECRAFT_CLASSES = new String[]{
+			"net/minecraft/client/main/Main.class",
+			"net/minecraft/client/MinecraftApplet.class",
+			"net/minecraft/server/Main.class"
+	};
+	private static final Logger LOGGER = LoggerFactory.getLogger("Plugin/Minecraft");
+	protected final Collection<ModProperties> modProperties = new ArrayList<>();
+	protected Path gamePath;
+	protected String foundMainClass;
+	private String version;
+
+	@Override
+	public boolean isApplicable() {
+		gamePath = findGame();
+		return gamePath != null;
+	}
+
+	@SuppressWarnings({"rawtypes", "unchecked"})
+	@Override
+	public void init(FrogLoader loader) throws Exception {
+		if (gamePath == null) {
+			throw new IllegalStateException("Game not found yet!");
+		}
+		Path remappedGamePath = loader.getGameDir().resolve(".frogmc/remappedJars").resolve(version).resolve("game-" + version + "-remapped.jar");
+
+		if (!Files.exists(remappedGamePath.getParent())) {
+			try {
+				Files.createDirectories(remappedGamePath.getParent());
+			} catch (IOException e) {
+				LOGGER.error("Failed to create directory", e);
+			}
+		}
+
+		modProperties.add(JavaModProperties.get());
+		modProperties.add(new ModPropertiesImpl("minecraft", "Minecraft", "/assets/minecraft/textures/block/grass_block_side.png",
+				MinecraftSemVerImpl.get(version), "MC-EULA",
+				Map.of("Mojang AB", Collections.singleton("Author")),
+				new ModDependencies(Collections.emptySet(), Collections.emptySet(), Collections.emptySet(), Collections.emptySet()),
+				ModExtensions.of(Collections.emptyMap()), Collections.emptySet()));
+
+		Collection<Path> mods = Discovery.find(loader.getModsDir(), path ->
+				version.equals(path.getFileName().toString()), path ->
+				path.getFileName().toString().endsWith(FrogLoaderImpl.MOD_FILE_EXTENSION));
+		Collection<URL> classpathMods = this.getClass().getClassLoader().resources(ModPropertiesReader.PROPERTIES_FILE_NAME).distinct().toList();
+
+		classpathMods.stream().map(ModPropertiesReader::readFile).map(o -> o.orElse(null)).filter(Objects::nonNull).forEach(modProperties::add);
+		Map<Path, ModProperties> modPaths = new HashMap<>();
+		for (Path mod : new HashSet<>(mods)) {
+			findJiJMods(mod, mods, modPaths);
+		}
+
+		try {
+			modProperties.retainAll(new ModDependencyResolver(modProperties).solve());
+		} catch (ModDependencyResolver.BreakingModException e) {
+			LoaderGui.builder().setContent(LoaderGui.ContentType.INFO_BREAKING_DEP, e).addReport(CrashReportGenerator.writeReport(e, modProperties)).build().show();
+		} catch (ModDependencyResolver.UnfulfilledDependencyException e) {
+			LoaderGui.builder().setContent(LoaderGui.ContentType.INFO_UNFULFILLED_DEP, e).addReport(CrashReportGenerator.writeReport(e, modProperties)).build().show();
+		}
+
+		mods.stream().filter(p -> modProperties.contains(modPaths.get(p))).map(Path::toUri).map(uri -> {
+			try {
+				return uri.toURL();
+			} catch (MalformedURLException e) {
+				throw new RuntimeException(e);
+			}
+		}).forEach(FrogLoaderImpl.getInstance().getClassloader()::addURL);
+
+		modProperties.forEach(props -> {
+			Object o = props.extensions().get(BuiltinExtensions.MIXIN_CONFIG);
+			if (o instanceof String name) {
+				Mixins.addConfiguration(name);
+			} else if (o instanceof Collection l) {
+				((Collection<String>) l).forEach(Mixins::addConfiguration);
+			}
+		});
+
+		if (!loader.isDevelopment()) {
+			if (!Files.exists(remappedGamePath)) {
+				Thyroxine.run(version, gamePath, remappedGamePath, true, false);
+			}
+		}
+
+		AWProcessor.load(modProperties);
+
+		var runtimePath = loader.isDevelopment() ? gamePath : remappedGamePath;
+		FrogLoaderImpl.getInstance().getClassloader().addURL(runtimePath.toUri().toURL());
+	}
+
+	protected void findJiJMods(Path mod, Collection<Path> mods, Map<Path, ModProperties> modPaths) throws IOException {
+		Optional<ModProperties> opt = ModPropertiesReader.read(mod);
+		if (opt.isPresent()) {
+			ModProperties p = opt.get();
+			modProperties.add(p);
+			modPaths.put(mod, p);
+			List<List<Map<String, String>>> entries = p.extensions().getOrDefault(BuiltinExtensions.INCLUDED_JARS, Collections.emptyList());
+			if (entries.isEmpty()) {
+				return;
+			}
+			try (FileSystem fs = FileSystems.newFileSystem(mod)) {
+				for (var jars : entries) {
+					for (Map<String, String> jar : jars) {
+						Path path = fs.getPath(jar.get("path")).toAbsolutePath();
+						mods.add(path);
+						findJiJMods(path, mods, modPaths);
+					}
+				}
+			}
+		}
+	}
+
+	@Override
+	public Collection<ModProperties> getMods() {
+		return modProperties;
+	}
+
+	protected Path findGame() {
+		LOGGER.info("Locating game..");
+		String jar = System.getProperty(SystemProperties.MINECRAFT_GAME_JAR);
+		if (jar != null) {
+			Path p = Paths.get(jar);
+			if (checkLocation(p)) {
+				return p;
+			}
+		}
+
+		for (String s : System.getProperty("java.class.path", "").split(File.pathSeparator)) {
+			Path p = Paths.get(s);
+			if (checkLocation(p)) {
+				return p;
+			}
+		}
+		LOGGER.warn("Could not locate game!");
+		return null;
+	}
+
+	protected boolean checkLocation(Path jar) {
+		if (!Files.exists(jar) || Files.isDirectory(jar)) {
+			return false;
+		}
+		try (FileSystem fs = FileSystems.newFileSystem(jar)) {
+			for (String n : MINECRAFT_CLASSES) {
+				if (Files.exists(fs.getPath(n)) && n.contains(FrogLoaderImpl.getInstance().getEnv().getIdentifier())) {
+					LOGGER.info("Found game: {}", jar);
+					foundMainClass = n.substring(0, n.length() - 6).replace("/", ".");
+					version = FrogLoaderImpl.getInstance().getGson().fromJson(Files.readString(fs.getPath("version.json")), JsonObject.class).get("id").getAsString();
+					return true;
+				}
+			}
+		} catch (IOException e) {
+			throw new RuntimeException(e);
+		}
+		return false;
+	}
+
+	@Override
+	public void run() {
+		try {
+			if (foundMainClass != null) {
+				modProperties.forEach(props ->
+						props.extensions().runIfPresent(PreLaunchExtension.ID,
+								PreLaunchExtension.class, PreLaunchExtension::onPreLaunch));
+				LOGGER.info("Launching main class: {}", foundMainClass);
+				Class<?> mainClass = Class.forName(foundMainClass);
+				MethodHandle main = MethodHandles.publicLookup().findStatic(mainClass, "main", MethodType.methodType(void.class, String[].class));
+				main.invoke((Object) FrogLoaderImpl.getInstance().getArgs());
+			} else {
+				LOGGER.warn("Failed to locate main class!");
+			}
+		} catch (Throwable e) {
+			throw new RuntimeException(e);
+		}
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/plugin/game/minecraft/MinecraftSemVerImpl.java

@@ -0,0 +1,67 @@
+package dev.frogmc.frogloader.impl.plugin.game.minecraft;
+
+import dev.frogmc.frogloader.api.mod.SemVer;
+import dev.frogmc.frogloader.impl.SemVerParseException;
+import dev.frogmc.frogloader.impl.mod.SemVerImpl;
+import org.jetbrains.annotations.NotNull;
+
+public class MinecraftSemVerImpl implements SemVer {
+
+	private final String version;
+
+	private MinecraftSemVerImpl(String version) {
+		this.version = version;
+	}
+
+	static SemVer get(String version) {
+		try {
+			return SemVerImpl.parse(version);
+		} catch (SemVerParseException e) {
+			return new MinecraftSemVerImpl(version);
+		}
+	}
+
+	@Override
+	public int major() {
+		throw new UnsupportedOperationException("Minecraft version " + version + " does not represent a semver-compatible version");
+	}
+
+	@Override
+	public int minor() {
+		throw new UnsupportedOperationException("Minecraft version " + version + " does not represent a semver-compatible version");
+	}
+
+	@Override
+	public int patch() {
+		throw new UnsupportedOperationException("Minecraft version " + version + " does not represent a semver-compatible version");
+	}
+
+	@Override
+	public String prerelease() {
+		return null;
+	}
+
+	@Override
+	public String build() {
+		return null;
+	}
+
+	@Override
+	public int compareTo(@NotNull SemVer o) {
+		// Best-effort comparison
+		return version.compareTo(o.toString());
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj instanceof SemVer) {
+			return obj.toString().equals(version);
+		}
+		return false;
+	}
+
+	@Override
+	public String toString() {
+		return version;
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/util/CrashReportGenerator.java

@@ -0,0 +1,63 @@
+package dev.frogmc.frogloader.impl.util;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Collection;
+
+import dev.frogmc.frogloader.api.mod.ModProperties;
+import dev.frogmc.frogloader.impl.FrogLoaderImpl;
+import dev.frogmc.frogloader.impl.mod.ModUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class CrashReportGenerator {
+	private static final DateTimeFormatter dateFormat = DateTimeFormatter.ofPattern("yyyy-MM-dd_HH-mm-ss_SSSS");
+	private static final Logger LOGGER = LoggerFactory.getLogger(CrashReportGenerator.class);
+
+	public static Path writeReport(Throwable t) {
+		return writeReport(t, FrogLoaderImpl.getInstance().getMods());
+	}
+
+	public static Path writeReport(Throwable t, Collection<ModProperties> mods) {
+		String fileName = "crash-" + dateFormat.format(ZonedDateTime.now()) + "_frogloader.log";
+		Path out = FrogLoaderImpl.getInstance().getGameDir().resolve("crash-reports").resolve(fileName);
+
+		try {
+			String report = getForException(t, mods);
+			Files.createDirectories(out.getParent());
+			Files.writeString(out, report);
+			LOGGER.info("Saved crash report to {}!", out.toAbsolutePath().toUri());
+			System.out.println(report);
+		} catch (IOException e) {
+			LOGGER.error("Failed to save crash report!", e);
+		}
+
+		return out;
+	}
+
+	public static String getForException(Throwable t) {
+		return getForException(t, FrogLoaderImpl.getInstance().getMods());
+	}
+
+	public static String getForException(Throwable t, Collection<ModProperties> mods) {
+		StringBuilder builder = new StringBuilder("--- FrogLoader Crash Report ---");
+
+		builder.append("\n\n").append("Time: ").append(ZonedDateTime.now()).append(" (").append(ZonedDateTime.now(ZoneOffset.UTC)).append(" UTC)");
+		builder.append("\n");
+		builder.append("\n").append("Exception:");
+		builder.append("\n");
+		StringWriter writer = new StringWriter();
+		t.printStackTrace(new PrintWriter(writer));
+		builder.append(writer);
+		builder.append("\n").append(ModUtil.getModList(mods));
+		builder.append("\n\n").append("--- Report End ---");
+
+		return builder.toString();
+	}
+}

src/main/java/dev/frogmc/frogloader/impl/util/SystemProperties.java

@@ -0,0 +1,10 @@
+package dev.frogmc.frogloader.impl.util;
+
+import lombok.experimental.UtilityClass;
+
+@UtilityClass
+public class SystemProperties {
+
+	public final String MINECRAFT_GAME_JAR = "frogmc.plugin.minecraft.gameJar";
+	public final String DEVELOPMENT = "frogmc.development";
+}

src/main/java/dev/frogmc/frogloader/impl/util/URLUtil.java

@@ -0,0 +1,57 @@
+package dev.frogmc.frogloader.impl.util;
+
+import java.awt.*;
+import java.awt.datatransfer.StringSelection;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.URI;
+import java.util.Locale;
+import java.util.stream.Collectors;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class URLUtil {
+
+	private static final Logger LOGGER = LoggerFactory.getLogger(URLUtil.class);
+
+	public static void open(URI url) {
+
+		LOGGER.info("Opening: {}", url);
+
+		try {
+			if (Desktop.getDesktop().isSupported(Desktop.Action.BROWSE)) {
+				Desktop.getDesktop().browse(url);
+			} else {
+				ProcessBuilder builder = new ProcessBuilder("xdg-open", url.toString());
+				builder.start();
+			}
+		} catch (IOException e) {
+			LOGGER.error("Failed to open url: ", e);
+		}
+
+	}
+
+	public static void copyStringContent(URI url) {
+		if (System.getenv().getOrDefault("DESKTOP_SESSION", "").toLowerCase(Locale.ROOT)
+				.contains("wayland")) {
+			try {
+				ProcessBuilder builder = new ProcessBuilder("bash", "-c", "wl-copy < " + url);
+				builder.start();
+			} catch (IOException e) {
+				LOGGER.error("Failed to copy contents of {}:", url, e);
+			}
+		} else {
+			try (InputStream in = url.toURL().openStream();
+				 InputStreamReader inReader = new InputStreamReader(in);
+				 BufferedReader reader = new BufferedReader(inReader)) {
+				String data = reader.lines().collect(Collectors.joining("\n"));
+				Toolkit.getDefaultToolkit().getSystemClipboard().setContents(new StringSelection(data), null);
+			} catch (IOException e) {
+				LOGGER.error("Failed to copy contents of {}:", url, e);
+			}
+		}
+	}
+}

src/main/java/org/ecorous/esnesnon/nonsense/loader/api/Loader.java

@@ -1,25 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.api;
-
-import java.nio.file.Path;
-import java.util.List;
-
-import org.ecorous.esnesnon.nonsense.loader.api.env.Env;
-import org.ecorous.esnesnon.nonsense.loader.impl.LoaderImpl;
-import org.ecorous.esnesnon.nonsense.loader.impl.plugin.NonsensePlugin;
-
-public interface Loader {
-
-	static Loader getInstance(){
-		return LoaderImpl.getInstance();
-	}
-
-	List<NonsensePlugin> getPlugins();
-
-	Env getEnv();
-
-	Path getGameDir();
-	Path getConfigDir();
-	Path getModsDir();
-	boolean isDevelopment();
-
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/api/env/Env.java

@@ -1,14 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.api.env;
-
-import lombok.AllArgsConstructor;
-import lombok.Getter;
-
-@Getter
-@AllArgsConstructor
-public enum Env {
-    CLIENT("CLIENT", "client"),
-    SERVER("SERVER", "server"),
-    ;
-
-    final String mixinName, identifier;
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/api/extensions/PreLaunchExtension.java

@@ -1,11 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.api.extensions;
-
-/**
- * The Pre-Launch Extension.
- * <p>This Extension is run right before the game is launched. (provided the used plugin supports it :) )</p>
- */
-public interface PreLaunchExtension {
-	String ID = "pre_launch";
-
-	void onPreLaunch();
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/api/mod/License.java

@@ -1,54 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.api.mod;
-
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.util.HashMap;
-import java.util.Map;
-
-import com.google.gson.JsonObject;
-import org.ecorous.esnesnon.nonsense.loader.impl.LoaderImpl;
-import org.slf4j.LoggerFactory;
-
-public final class License {
-
-	private static final Map<String, String> idToName = new HashMap<>();
-	private static final Map<String, License> idToLicense = new HashMap<>();
-
-	static {
-		loadList();
-	}
-
-	private static void loadList(){
-		try (InputStream in = License.class.getResourceAsStream("/assets/nonsense-loader/licenses.json")){
-			if (in == null){
-				throw new IllegalStateException("in == null");
-			}
-			JsonObject object = LoaderImpl.getInstance().getGson().fromJson(new InputStreamReader(in), JsonObject.class);
-			object.getAsJsonArray("licenses").forEach(element -> {
-				JsonObject entry = element.getAsJsonObject();
-				idToName.put(entry.get("licenseId").getAsString(), entry.get("name").getAsString());
-			});
-		} catch (Exception e){
-			LoggerFactory.getLogger(License.class).warn("Failed to load license list!", e);
-		}
-	}
-
-	public static License fromId(String id){
-		return idToLicense.computeIfAbsent(id, ignored -> new License(idToName.getOrDefault(id, id), id));
-	}
-
-	private final String name, id;
-	private License(String name, String id) {
-
-		this.name = name;
-		this.id = id;
-	}
-
-	public String name() {
-		return name;
-	}
-
-	public String id() {
-		return id;
-	}
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/api/mod/ModCredits.java

@@ -1,85 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.api.mod;
-
-import java.util.*;
-
-import org.jetbrains.annotations.NotNull;
-
-public final class ModCredits implements Map<String, Collection<String>> {
-
-	public static ModCredits of(Map<String, Collection<String>> credits){
-		return new ModCredits(credits);
-	}
-
-	private final Map<String, Collection<String>> credits;
-	private ModCredits(Map<String, Collection<String>> credits){
-		this.credits = credits;
-	}
-
-	public Collection<String> getEntries(){
-		return credits.keySet();
-	}
-
-	public Collection<String> getRoles(String name){
-		return credits.getOrDefault(name, Collections.emptySet());
-	}
-
-	@Override
-	public int size() {
-		return credits.size();
-	}
-
-	@Override
-	public boolean isEmpty() {
-		return credits.isEmpty();
-	}
-
-	@Override
-	public boolean containsKey(Object key) {
-		return credits.containsKey(key);
-	}
-
-	@Override
-	public boolean containsValue(Object value) {
-		return credits.containsValue(value);
-	}
-
-	@Override
-	public Collection<String> get(Object key) {
-		return credits.get(key);
-	}
-
-	@Override
-	public Collection<String> put(String key, Collection<String> value) {
-		return List.of();
-	}
-
-	@Override
-	public Collection<String> remove(Object key) {
-		return List.of();
-	}
-
-	@Override
-	public void putAll(@NotNull Map<? extends String, ? extends Collection<String>> m) {
-
-	}
-
-	@Override
-	public void clear() {
-
-	}
-
-	@Override
-	public @NotNull Set<String> keySet() {
-		return credits.keySet();
-	}
-
-	@Override
-	public @NotNull Collection<Collection<String>> values() {
-		return credits.values();
-	}
-
-	@Override
-	public @NotNull Set<Entry<String, Collection<String>>> entrySet() {
-		return credits.entrySet();
-	}
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/api/mod/ModDependencies.java

@@ -1,56 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.api.mod;
-
-import java.util.*;
-
-public final class ModDependencies {
-
-	private final Map<Type, Collection<Entry>> entries = new HashMap<>();
-
-	public ModDependencies(Collection<Entry> depends, Collection<Entry> breaks, Collection<Entry> suggests) {
-		entries.put(Type.DEPEND, depends);
-		entries.put(Type.BREAK, breaks);
-		entries.put(Type.SUGGEST, suggests);
-	}
-
-	public Collection<Entry> getForType(Type type) {
-		return entries.get(type);
-	}
-
-	public List<ModEntry> getForModId(String id) {
-		List<ModEntry> entries = new ArrayList<>();
-		for (Type type : Type.values()) {
-			for (Entry entry : getForType(type)) {
-				if (entry.id.equals(id)) {
-					entries.add(new ModEntry(type, entry.range));
-				}
-			}
-		}
-		return entries;
-	}
-
-	public static class ModEntry {
-		private final Type type;
-		private final String range;
-
-		private ModEntry(Type type, String range) {
-			this.type = type;
-			this.range = range;
-		}
-
-		public Type type() {
-			return type;
-		}
-
-		public String range() {
-			return range;
-		}
-	}
-
-	public record Entry(String id, String range) {
-
-	}
-
-	public enum Type {
-		DEPEND, BREAK, SUGGEST
-	}
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/api/mod/ModExtensions.java

@@ -1,69 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.api.mod;
-
-import java.lang.invoke.MethodHandle;
-import java.lang.invoke.MethodHandles;
-import java.lang.invoke.MethodType;
-import java.util.Map;
-import java.util.function.Consumer;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-public final class ModExtensions {
-
-	private static final Logger LOGGER = LoggerFactory.getLogger(ModExtensions.class);
-
-	public static ModExtensions of(Map<String, Object> entries){
-		return new ModExtensions(entries);
-	}
-
-	private final Map<String, Object> extensions;
-
-	private ModExtensions(Map<String, Object> entries){
-		extensions = entries;
-	}
-
-	@SuppressWarnings("unchecked")
-	public <T> T get(String key) {
-		return (T) extensions.get(key);
-	}
-
-	@SuppressWarnings("unchecked")
-	public <T> T getOrDefault(String key, T defaultValue) {
-		return (T) extensions.getOrDefault(key, defaultValue);
-	}
-
-	public <T> void runIfPresent(String key, Consumer<T> action) {
-		T value = get(key);
-		if (value != null){
-			action.accept(value);
-		}
-	}
-
-	@SuppressWarnings("unchecked")
-	public <T> void runIfPresent(String key, Class<T> type, Consumer<T> action) {
-		String value = get(key);
-
-		if (value == null){
-			return;
-		}
-
-		try {
-			MethodHandle handle;
-			if (value.contains("::")) {
-				String[] parts = value.split("::");
-				handle = MethodHandles.lookup().findVirtual(Class.forName(parts[0]), parts[1], MethodType.methodType(type));
-			} else {
-				handle = MethodHandles.lookup().findConstructor(Class.forName(value), MethodType.methodType(void.class));
-			}
-			T object = (T) handle.invoke();
-			if (object != null) {
-				action.accept(object);
-			}
-		} catch (Throwable e) {
-			LOGGER.warn("Failed to instantiate Extension: ", e);
-		}
-	}
-
-
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/api/mod/ModProperties.java

@@ -1,20 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.api.mod;
-
-public interface ModProperties {
-
-	String id();
-
-	String name();
-
-	SemVer version();
-
-	License license();
-
-	ModCredits credits();
-
-	ModDependencies dependencies();
-
-	ModExtensions extensions();
-
-
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/api/mod/ModProvider.java

@@ -1,11 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.api.mod;
-
-import java.util.Map;
-
-public interface ModProvider {
-
-	ModProperties properties();
-
-	Map<String, String> entrypoints();
-
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/impl/Discovery.java

@@ -1,41 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.impl;
-
-import java.io.IOException;
-import java.nio.file.FileVisitResult;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.SimpleFileVisitor;
-import java.nio.file.attribute.BasicFileAttributes;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.List;
-import java.util.function.Predicate;
-
-public class Discovery {
-	public static Collection<Path> find(Path start, Predicate<Path> directoryFilter, Predicate<Path> fileFilter){
-		List<Path> paths = new ArrayList<>();
-		try {
-			Files.walkFileTree(start, new SimpleFileVisitor<>() {
-
-				@Override
-				public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
-					if (directoryFilter.test(dir)) {
-						return super.preVisitDirectory(dir, attrs);
-					}
-					return FileVisitResult.SKIP_SUBTREE;
-				}
-
-				@Override
-				public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
-					if (fileFilter.test(file)) {
-						paths.add(file);
-					}
-					return super.visitFile(file, attrs);
-				}
-			});
-		} catch (IOException e) {
-			// TODO error handling.
-		}
-		return paths;
-	}
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/impl/LoaderImpl.java

@@ -1,145 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.impl;
-
-import java.io.*;
-import java.lang.invoke.MethodHandle;
-import java.lang.invoke.MethodHandles;
-import java.lang.invoke.MethodType;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.util.*;
-
-import com.google.gson.Gson;
-import org.ecorous.esnesnon.nonsense.loader.api.Loader;
-import org.ecorous.esnesnon.nonsense.loader.api.env.Env;
-import org.ecorous.esnesnon.nonsense.loader.impl.launch.MixinClassLoader;
-import org.ecorous.esnesnon.nonsense.loader.impl.plugin.NonsensePlugin;
-import lombok.Getter;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.spongepowered.asm.mixin.MixinEnvironment;
-
-public class LoaderImpl implements Loader {
-	// TODO decide this
-	public static final String MOD_FILE_EXTENSION = ".nonsense";
-	private final boolean DEV_ENV = Boolean.getBoolean("nonsense.development");
-
-	@Getter
-	private final String[] args;
-	@Getter
-	private final Env env;
-
-	@Getter
-	private static LoaderImpl instance;
-
-	private final Logger LOGGER = LoggerFactory.getLogger("Nonsense Loader");
-
-	@Getter
-	private final List<NonsensePlugin> plugins = new ArrayList<>();
-
-	@Getter
-	private final Path gameDir, configDir, modsDir;
-
-	@Getter
-	private final MixinClassLoader classloader;
-
-	@Getter
-	private final Gson gson = new Gson();
-
-	private LoaderImpl(String[] args, Env env) {
-		instance = this;
-		this.classloader = (MixinClassLoader) this.getClass().getClassLoader();
-		this.args = args;
-		this.env = env;
-
-		gameDir = Paths.get(getArgumentOrElse("gameDir", "."));
-		configDir = gameDir.resolve("config");
-		modsDir = gameDir.resolve("mods");
-
-		try {
-			Files.createDirectories(gameDir);
-			Files.createDirectories(configDir);
-			Files.createDirectories(modsDir);
-		} catch (IOException e) {
-			LOGGER.warn("Failed to create essential directories ", e);
-		}
-
-		discoverPlugins();
-		advanceMixinState();
-		LOGGER.info("Launching...");
-		plugins.forEach(NonsensePlugin::run);
-	}
-
-	private void advanceMixinState(){
-		try {
-			MethodHandle m = MethodHandles.privateLookupIn(MixinEnvironment.class, MethodHandles.lookup()).findStatic(MixinEnvironment.class, "gotoPhase", MethodType.methodType(void.class, MixinEnvironment.Phase.class));
-			m.invoke(MixinEnvironment.Phase.INIT);
-			m.invoke(MixinEnvironment.Phase.DEFAULT);
-		} catch (Throwable e) {
-			throw new RuntimeException(e);
-		}
-	}
-
-	@SuppressWarnings("unused")
-	public static void run(String[] args, Env env) {
-		if (instance != null) {
-			throw new IllegalStateException("Loader was started multiple times!");
-		}
-
-		new LoaderImpl(args, env);
-	}
-
-	private void discoverPlugins() {
-		List<String> classes = new ArrayList<>();
-		this.getClass().getClassLoader().resources("META-INF/services/"+NonsensePlugin.class.getName()).distinct().forEach(url -> {
-			try (InputStream inputStream = url.openStream()) {
-				new BufferedReader(new InputStreamReader(inputStream)).lines().forEach(classes::add);
-			} catch (IOException e) {
-				LOGGER.error("Failed to load plugin: ", e);
-			}
-		});
-		LOGGER.info("Found plugins: \n{}", String.join("\t\n", classes));
-
-		for (Class<?> c : classes.stream().map((String className) -> {
-			try {
-				return classloader.findClass(className);
-			} catch (ClassNotFoundException e) {
-				LOGGER.error("Failed to load plugin: ", e);
-				return null;
-			}
-		}).filter(Objects::nonNull).filter(NonsensePlugin.class::isAssignableFrom).toList()) {
-			try {
-				MethodHandle ctor = MethodHandles.publicLookup().findConstructor(c, MethodType.methodType(void.class));
-				NonsensePlugin plugin = (NonsensePlugin) ctor.invoke();
-				plugins.add(plugin);
-				if (plugin.init(this)) {
-					break;
-				}
-			} catch (Throwable e) {
-				LOGGER.error("Error during plugin initialisation: ", e);
-			}
-		}
-	}
-
-	public String getArgument(String name){
-		for (int i=0;i<args.length-1;i+=2){
-			if (args[i].equals("--"+name)){
-				return args[i+1];
-			}
-		}
-		return "";
-	}
-
-	public String getArgumentOrElse(String name, String other){
-		String res = getArgument(name);
-		if (res.isEmpty()){
-			return other;
-		}
-		return res;
-	}
-
-	@Override
-	public boolean isDevelopment() {
-		return DEV_ENV;
-	}
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/impl/launch/Launcher.java

@@ -1,60 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.impl.launch;
-
-import java.lang.invoke.MethodHandle;
-import java.lang.invoke.MethodHandles;
-import java.lang.invoke.MethodType;
-import java.util.HashMap;
-import java.util.Map;
-
-import org.ecorous.esnesnon.nonsense.loader.api.env.Env;
-import org.ecorous.esnesnon.nonsense.loader.impl.mixin.NonsenseMixinService;
-import lombok.Getter;
-import org.spongepowered.asm.launch.MixinBootstrap;
-import org.spongepowered.asm.service.IPropertyKey;
-
-public class Launcher {
-
-	@Getter
-	private final MixinClassLoader targetClassLoader;
-
-	@Getter
-	private static Launcher instance;
-
-	@Getter
-	private final Map<IPropertyKey, Object> globalProperties = new HashMap<>();
-
-	@Getter
-	private final Env env;
-
-	public static void run(String[] args, Env env) {
-		new Launcher(args, env);
-	}
-
-	public Launcher(String[] args, Env env){
-		if (instance != null){
-			throw new IllegalStateException();
-		}
-		instance = this;
-		this.env = env;
-		targetClassLoader = new MixinClassLoader();
-		targetClassLoader.excludePackage("org.slf4j");
-		targetClassLoader.excludePackage("org.spongepowered");
-		targetClassLoader.excludePackage("org.apache.logging");
-		targetClassLoader.excludePackage("org.ecorous.esnesnon.nonsense.loader.impl.launch");
-		targetClassLoader.excludePackage("org.ecorous.esnesnon.nonsense.loader.api.env");
-
-		Thread.currentThread().setContextClassLoader(targetClassLoader);
-
-		System.setProperty("mixin.service", NonsenseMixinService.class.getName());
-		MixinBootstrap.init();
-
-		try {
-			Class<?> clazz = targetClassLoader.findClass("org.ecorous.esnesnon.nonsense.loader.impl.LoaderImpl");
-			MethodHandle ctor = MethodHandles.publicLookup().findStatic(clazz, "run", MethodType.methodType(void.class, String[].class, Env.class));
-			ctor.invoke(args, env);
-		} catch (Throwable e) {
-			// TODO
-			throw new RuntimeException(e);
-		}
-	}
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/impl/launch/MixinClassLoader.java

@@ -1,129 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.impl.launch;
-
-import org.ecorous.esnesnon.nonsense.loader.impl.mixin.NonsenseMixinService;
-import org.jetbrains.annotations.Nullable;
-import org.spongepowered.asm.mixin.MixinEnvironment;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.URL;
-import java.net.URLClassLoader;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Enumeration;
-import java.util.List;
-
-public class MixinClassLoader extends URLClassLoader {
-
-    private static final ClassLoader SYSTEM = ClassLoader.getSystemClassLoader();
-    private final List<String> exclusions = new ArrayList<>();
-
-    static {
-        registerAsParallelCapable();
-    }
-
-    public MixinClassLoader() {
-        super(new URL[0], null);
-        excludePackage("java");
-        excludePackage("com.sun");
-        excludePackage("sun");
-        excludePackage("jdk");
-    }
-
-    public boolean isClassLoaded(String name) {
-        return findLoadedClass(name) != null;
-    }
-
-    public byte[] getClassBytes(String name) throws IOException {
-        String binName = name.replace('.', '/');
-        String path = binName.concat(".class");
-
-        try (InputStream in = getResourceAsStream(path)) {
-            if (in == null)
-                return null;
-
-            return NonsenseMixinService.getTransformer().transformClass(MixinEnvironment.getCurrentEnvironment(), name, in.readAllBytes());
-        }
-    }
-
-    public void excludePackage(String name) {
-        exclusions.add(name + '.');
-    }
-
-    @Override
-    public void addURL(URL url) {
-        super.addURL(url);
-    }
-
-    @Override
-    protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
-        synchronized (getClassLoadingLock(name)) {
-            for (String prefix : exclusions) {
-                if (name.startsWith(prefix)) {
-                    return SYSTEM.loadClass(name);
-                }
-            }
-
-            Class<?> loaded = findLoadedClass(name);
-            if (loaded != null)
-                return loaded;
-
-            Class<?> result = findClass(name);
-
-            if (resolve)
-                resolveClass(result);
-
-            return result;
-        }
-    }
-
-    @Override
-    public synchronized Class<?> findClass(String name) throws ClassNotFoundException {
-        try {
-            byte[] bytes = getClassBytes(name);
-            if (bytes == null)
-                throw new ClassNotFoundException(name);
-
-            return defineClass(name, bytes, 0, bytes.length);
-        } catch (IOException e) {
-            throw new ClassNotFoundException(name, e);
-        }
-    }
-
-    @Nullable
-    @Override
-    public URL getResource(String name) {
-        URL parentUrl = super.getResource(name);
-
-        if (parentUrl != null)
-            return parentUrl;
-
-        return SYSTEM.getResource(name);
-    }
-
-    @Override
-    public Enumeration<URL> getResources(String name) throws IOException {
-        Enumeration<URL> parentResources = super.getResources(name);
-        Enumeration<URL> systemResources = SYSTEM.getResources(name);
-
-        if (parentResources.hasMoreElements() && systemResources.hasMoreElements()) {
-            List<URL> list = new ArrayList<>();
-
-            while (parentResources.hasMoreElements())
-                list.add(parentResources.nextElement());
-
-            while (systemResources.hasMoreElements())
-                list.add(systemResources.nextElement());
-
-            return Collections.enumeration(list);
-        }
-
-        if (parentResources.hasMoreElements())
-            return parentResources;
-
-        if (systemResources.hasMoreElements())
-            return systemResources;
-
-        return Collections.enumeration(Collections.emptyList());
-    }
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/impl/launch/client/NonsenseClient.java

@@ -1,11 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.impl.launch.client;
-
-import org.ecorous.esnesnon.nonsense.loader.impl.launch.Launcher;
-import org.ecorous.esnesnon.nonsense.loader.api.env.Env;
-
-public class NonsenseClient {
-
-    public static void main(String[] args){
-        Launcher.run(args, Env.CLIENT);
-    }
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/impl/launch/server/NonsenseServer.java

@@ -1,11 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.impl.launch.server;
-
-import org.ecorous.esnesnon.nonsense.loader.impl.launch.Launcher;
-import org.ecorous.esnesnon.nonsense.loader.api.env.Env;
-
-public class NonsenseServer {
-
-    public static void main(String[] args){
-        Launcher.run(args, Env.SERVER);
-    }
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/impl/mixin/NonsenseGlobalPropertyService.java

@@ -1,39 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.impl.mixin;
-
-import org.ecorous.esnesnon.nonsense.loader.impl.launch.Launcher;
-import org.spongepowered.asm.service.IGlobalPropertyService;
-import org.spongepowered.asm.service.IPropertyKey;
-
-public class NonsenseGlobalPropertyService implements IGlobalPropertyService {
-	@Override
-	public IPropertyKey resolveKey(String name) {
-		return new IPropertyKey() {
-			@Override
-			public String toString() {
-				return name;
-			}
-		};
-	}
-
-	@SuppressWarnings("unchecked")
-	@Override
-	public <T> T getProperty(IPropertyKey key) {
-		return (T) Launcher.getInstance().getGlobalProperties().get(key);
-	}
-
-	@Override
-	public void setProperty(IPropertyKey key, Object value) {
-		Launcher.getInstance().getGlobalProperties().put(key, value);
-	}
-
-	@SuppressWarnings("unchecked")
-	@Override
-	public <T> T getProperty(IPropertyKey key, T defaultValue) {
-		return (T) Launcher.getInstance().getGlobalProperties().getOrDefault(key, defaultValue);
-	}
-
-	@Override
-	public String getPropertyString(IPropertyKey key, String defaultValue) {
-		return Launcher.getInstance().getGlobalProperties().getOrDefault(key, defaultValue).toString();
-	}
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/impl/mod/BuiltinModProvider.java

@@ -1,9 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.impl.mod;
-
-import java.util.Map;
-
-import org.ecorous.esnesnon.nonsense.loader.api.mod.ModProperties;
-import org.ecorous.esnesnon.nonsense.loader.api.mod.ModProvider;
-
-public record BuiltinModProvider(ModProperties properties, Map<String, String> entrypoints) implements ModProvider {
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/impl/mod/ModPropertiesImpl.java

@@ -1,8 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.impl.mod;
-
-import org.ecorous.esnesnon.nonsense.loader.api.mod.*;
-
-public record ModPropertiesImpl(String id, String name, SemVer version, License license,
-								ModCredits credits, ModDependencies dependencies,
-								ModExtensions extensions) implements ModProperties {
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/impl/mod/ModPropertiesReader.java

@@ -1,69 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.impl.mod;
-
-import java.io.IOException;
-import java.io.UncheckedIOException;
-import java.net.URL;
-import java.nio.file.FileSystem;
-import java.nio.file.FileSystems;
-import java.nio.file.Path;
-import java.util.*;
-
-import com.electronwill.nightconfig.core.CommentedConfig;
-import com.electronwill.nightconfig.core.UnmodifiableConfig;
-import com.electronwill.nightconfig.core.file.FileNotFoundAction;
-import com.electronwill.nightconfig.toml.TomlParser;
-import org.ecorous.esnesnon.nonsense.loader.api.mod.*;
-import org.ecorous.esnesnon.nonsense.loader.impl.SemVerParseException;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-public class ModPropertiesReader {
-	private static final Logger LOGGER = LoggerFactory.getLogger(ModPropertiesReader.class);
-	public static final String PROPERTIES_FILE_NAME = "nonsense.mod.toml";
-
-	private static final TomlParser PARSER = new TomlParser();
-
-	public static Optional<ModProperties> read(Path mod) {
-
-		try (FileSystem fs = FileSystems.newFileSystem(mod)) {
-			CommentedConfig props = PARSER.parse(fs.getPath(PROPERTIES_FILE_NAME), FileNotFoundAction.THROW_ERROR);
-
-			return Optional.of(readProperties(props));
-		} catch (IOException e) {
-			LOGGER.warn("Failed to read mod properties: ", e);
-		}
-
-		return Optional.empty();
-	}
-
-	public static ModProperties readFile(URL in) {
-		CommentedConfig props = PARSER.parse(in);
-
-		return readProperties(props);
-	}
-
-	private static ModProperties readProperties(UnmodifiableConfig config) {
-		String id = config.get("nonsense.id");
-		String name = config.get("nonsense.name");
-		String version = config.get("nonsense.version");
-		String license = config.get("nonsense.license");
-
-		List<UnmodifiableConfig> creditsList = config.get("nonsense.credits");
-		Map<String, Collection<String>> credits = new HashMap<>();
-		creditsList.forEach(c -> credits.put(c.get("name"), c.get("roles")));
-
-		Collection<ModDependencies.Entry> depends = config.get("nonsense.dependencies.depends");
-		Collection<ModDependencies.Entry> breaks = config.get("nonsense.dependencies.breaks");
-		Collection<ModDependencies.Entry> suggests = config.get("nonsense.dependencies.suggests");
-
-		UnmodifiableConfig extensionsConfig = config.get("nonsense.extensions");
-		Map<String, Object> extensions = new HashMap<>();
-		extensionsConfig.entrySet().forEach(entry -> extensions.put(entry.getKey(), entry.getValue()));
-		try {
-			return new ModPropertiesImpl(id, name, SemVer.parse(version), License.fromId(license), ModCredits.of(credits), new ModDependencies(depends, breaks, suggests), ModExtensions.of(extensions));
-		} catch (SemVerParseException e) {
-			throw new UncheckedIOException(e);
-		}
-	}
-}
-

src/main/java/org/ecorous/esnesnon/nonsense/loader/impl/plugin/NonsensePlugin.java

@@ -1,14 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.impl.plugin;
-
-import org.ecorous.esnesnon.nonsense.loader.impl.LoaderImpl;
-
-public interface NonsensePlugin extends Runnable {
-
-	default void run() {
-
-	}
-
-	default boolean init(LoaderImpl loader) {
-		return false;
-	}
-}

src/main/java/org/ecorous/esnesnon/nonsense/loader/impl/plugin/game/Minecraft.java

@@ -1,156 +0,0 @@
-package org.ecorous.esnesnon.nonsense.loader.impl.plugin.game;
-
-import com.google.gson.JsonObject;
-import org.ecorous.esnesnon.nonsense.loader.api.extensions.PreLaunchExtension;
-import org.ecorous.esnesnon.nonsense.loader.api.mod.ModProperties;
-import org.ecorous.esnesnon.nonsense.loader.impl.Discovery;
-import org.ecorous.esnesnon.nonsense.loader.impl.LoaderImpl;
-import org.ecorous.esnesnon.nonsense.loader.impl.mod.ModPropertiesReader;
-import org.ecorous.esnesnon.nonsense.loader.impl.plugin.NonsensePlugin;
-import org.ecorous.esnesnon.nonsense_remapper.NonsenseRemapper;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.spongepowered.asm.mixin.Mixins;
-
-import java.io.File;
-import java.io.IOException;
-import java.lang.invoke.MethodHandle;
-import java.lang.invoke.MethodHandles;
-import java.lang.invoke.MethodType;
-import java.net.MalformedURLException;
-import java.net.URL;
-import java.nio.file.*;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.List;
-
-public class Minecraft implements NonsensePlugin {
-
-	private static final Logger LOGGER = LoggerFactory.getLogger("Plugin/Minecraft");
-	private static final String[] MINECRAFT_CLASSES = new String[]{
-			"net/minecraft/client/main/Main.class",
-			"net/minecraft/client/MinecraftApplet.class",
-			"net/minecraft/server/Main.class"
-	};
-
-	private final List<ModProperties> modProperties = new ArrayList<>();
-	private String version;
-	private Path remappedGamePath;
-	private String foundMainClass;
-
-	@Override
-	public boolean init(LoaderImpl loader) {
-		Path gameJar = findGame();
-		if (gameJar == null){
-			LOGGER.error("Could not find game jar on classpath! ({})", System.getProperty("java.class.path", ""));
-			return false;
-			//throw new IllegalStateException("Could not find game jar!");
-		}
-
-		remappedGamePath = loader.getGameDir().resolve(".nonsense/remappedJars").resolve(version).resolve("game-"+version+"-remapped.jar");
-
-		if (!Files.exists(remappedGamePath)){
-			try {
-				Files.createDirectories(remappedGamePath.getParent());
-			} catch (IOException e) {
-				LOGGER.error("Failed to create directory", e);
-			}
-		}
-
-
-		Collection<Path> mods = Discovery.find(loader.getModsDir(), path ->
-				version.equals(path.getFileName().toString()), path ->
-				path.getFileName().toString().endsWith(LoaderImpl.MOD_FILE_EXTENSION));
-		// TODO add mods found on the classpath
-		Collection<URL> classpathMods = this.getClass().getClassLoader().resources(ModPropertiesReader.PROPERTIES_FILE_NAME).distinct().toList();
-		mods.parallelStream().map(Path::toUri).map(uri -> {
-			try {
-				return uri.toURL();
-			} catch (MalformedURLException e) {
-				throw new RuntimeException(e);
-			}
-		}).forEachOrdered(LoaderImpl.getInstance().getClassloader()::addURL);
-		LOGGER.info("Found {} mod(s)", mods.size()+classpathMods.size());
-
-		classpathMods.parallelStream().map(ModPropertiesReader::readFile).forEachOrdered(modProperties::add);
-		mods.parallelStream().map(ModPropertiesReader::read).forEachOrdered(opt -> opt.ifPresent(modProperties::add));
-
-		modProperties.parallelStream().forEach(props -> {
-			String name = props.extensions().get("mixin_config");
-			Mixins.addConfiguration(name);
-		});
-
-		if (!Files.exists(remappedGamePath) && !loader.isDevelopment()){
-			try {
-				NonsenseRemapper.run(version, gameJar, remappedGamePath, true, false);
-			} catch (Throwable e) {
-				throw new RuntimeException(e);
-			}
-		}
-
-		try {
-			LoaderImpl.getInstance().getClassloader().addURL(remappedGamePath.toUri().toURL());
-		} catch (Throwable e) {
-			throw new RuntimeException(e);
-		}
-		return true;
-	}
-
-	private Path findGame() {
-		LOGGER.info("Locating game..");
-		String jar = System.getProperty("nonsense.plugin.minecraft.gameJar");
-		if (jar != null){
-			Path p = Paths.get(jar);
-			if (checkLocation(p)){
-				return p;
-			}
-		}
-
-		for (String s : System.getProperty("java.class.path", "").split(File.pathSeparator)) {
-			Path p = Paths.get(s);
-			if (checkLocation(p)){
-				return p;
-			}
-		}
-		LOGGER.warn("Could not locate game!");
-		return null;
-	}
-
-	private boolean checkLocation(Path jar){
-		if (!Files.exists(jar) || Files.isDirectory(jar)){
-			return false;
-		}
-		try (FileSystem fs = FileSystems.newFileSystem(jar)) {
-			for (String n : MINECRAFT_CLASSES) {
-				if (Files.exists(fs.getPath(n)) && n.contains(LoaderImpl.getInstance().getEnv().getIdentifier())){
-					LOGGER.info("Found game: {}", jar);
-					foundMainClass = n.substring(0, n.length()-6).replace("/", ".");
-					version = LoaderImpl.getInstance().getGson().fromJson(Files.readString(fs.getPath("version.json")), JsonObject.class).get("id").getAsString();
-					return true;
-				}
-			}
-		} catch (IOException e) {
-			throw new RuntimeException(e);
-		}
-		return false;
-	}
-
-	@Override
-	public void run() {
-		try {
-			if (foundMainClass != null) {
-				modProperties.parallelStream().forEach(props ->
-						props.extensions().runIfPresent(PreLaunchExtension.ID,
-								PreLaunchExtension.class, PreLaunchExtension::onPreLaunch));
-				LOGGER.info("Launching main class: {}", foundMainClass);
-				Class<?> mainClass = Class.forName(foundMainClass);
-				MethodHandle main = MethodHandles.publicLookup().findStatic(mainClass, "main", MethodType.methodType(void.class, String[].class));
-				main.invoke((Object) LoaderImpl.getInstance().getArgs());
-			} else {
-				LOGGER.warn("Failed to locate main class!");
-			}
-		} catch (Throwable e) {
-			throw new RuntimeException(e);
-		}
-	}
-}

src/main/resources/META-INF/services/dev.frogmc.frogloader.api.plugin.FrogPlugin

@@ -0,0 +1 @@
+dev.frogmc.frogloader.impl.plugin.game.minecraft.Minecraft

src/main/resources/META-INF/services/org.ecorous.esnesnon.nonsense.loader.impl.plugin.NonsensePlugin

@@ -1 +0,0 @@
-org.ecorous.esnesnon.nonsense.loader.impl.plugin.game.Minecraft

src/main/resources/META-INF/services/org.spongepowered.asm.service.IGlobalPropertyService

@@ -1 +1 @@
-org.ecorous.esnesnon.nonsense.loader.impl.mixin.NonsenseGlobalPropertyService
+dev.frogmc.frogloader.impl.mixin.FrogGlobalPropertyService

src/main/resources/frog.mod.toml

@@ -0,0 +1,12 @@
+[frog]
+format_version = "1.0.0"
+
+[frog.mod]
+id = "frogloader"
+name = "FrogLoader"
+version = "${version}"
+license = "Apache-2.0"
+credits = [
+    { name = "FrogMC Team", roles = ["author"] }
+]
+