Update to 1.20

Now uses split-sourceset's

build.gradle

@@ -6,6 +6,10 @@ plugins {
 version = project.mod_version
 group = project.maven_group
 
+base {
+	archivesName = project.archives_base_name
+}
+
 repositories {
 	// Add repositories to retrieve artifacts from in here.
 	// You should only use this when depending on other mods because
@@ -14,6 +18,18 @@ repositories {
 	// for more information about repositories.
 }
 
+loom {
+    splitEnvironmentSourceSets()
+
+    mods {
+        "modid" {
+            sourceSet sourceSets.main
+            sourceSet sourceSets.client
+        }
+    }
+
+}
+
 dependencies {
 	// To change the versions see the gradle.properties file
 	minecraft "com.mojang:minecraft:${project.minecraft_version}"
@@ -29,10 +45,6 @@ dependencies {
 	// modImplementation "net.fabricmc.fabric-api:fabric-api-deprecated:${project.fabric_version}"
 }
 
-base {
-	archivesName = project.archives_base_name
-}
-
 processResources {
 	inputs.property "version", project.version
 
@@ -42,7 +54,6 @@ processResources {
 }
 
 tasks.withType(JavaCompile).configureEach {
-	// Minecraft 1.18 (1.18-pre2) upwards uses Java 17.
 	it.options.release = 17
 }
 
@@ -58,7 +69,7 @@ java {
 
 jar {
 	from("LICENSE") {
-		rename { "${it}_${base.archivesName.get()}"}
+		rename { "${it}_${project.archivesBaseName}"}
 	}
 }
 

gradle.properties

@@ -3,15 +3,15 @@ org.gradle.jvmargs=-Xmx1G
 org.gradle.parallel=true
 
 # Fabric Properties
-	# check these on https://fabricmc.net/develop
-	minecraft_version=1.19.4
-	yarn_mappings=1.19.4+build.2
-	loader_version=0.14.19
+# check these on https://fabricmc.net/develop
+minecraft_version=1.20
+yarn_mappings=1.20+build.1
+loader_version=0.14.21
 
 # Mod Properties
-	mod_version = 1.0.0
-	maven_group = com.example
-	archives_base_name = fabric-example-mod
+mod_version=1.0.0
+maven_group=com.example
+archives_base_name=modid
 
 # Dependencies
-	fabric_version=0.79.0+1.19.4
+fabric_version=0.83.0+1.20
\ No newline at end of file

src/client/java/com/example/ExampleModClient.java

+package com.example;
+
+import net.fabricmc.api.ClientModInitializer;
+
+public class ExampleModClient implements ClientModInitializer {
+    @Override
+    public void onInitializeClient() {
+        // This entrypoint is suitable for setting up client-specific logic, such as rendering.
+    }
+}
\ No newline at end of file

src/client/java/com/example/mixin/client/ExampleClientMixin.java

+package com.example.mixin.client;
+
+import net.minecraft.client.MinecraftClient;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(MinecraftClient.class)
+public class ExampleClientMixin {
+	@Inject(at = @At("HEAD"), method = "run")
+	private void run(CallbackInfo info) {
+		// This code is injected into the start of MinecraftClient.run()V
+	}
+}
\ No newline at end of file

src/client/resources/modid.client.mixins.json

+{
+	"required": true,
+	"package": "com.example.mixin.client",
+	"compatibilityLevel": "JAVA_17",
+	"client": [
+		"ExampleClientMixin"
+	],
+	"injectors": {
+		"defaultRequire": 1
+	}
+}
\ No newline at end of file

src/main/java/net/fabricmc/example/ExampleMod.java → src/main/java/com/example/ExampleMod.java

-package net.fabricmc.example;
+package com.example;
 
 import net.fabricmc.api.ModInitializer;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

src/main/java/net/fabricmc/example/mixin/ExampleMixin.java → src/main/java/com/example/mixin/ExampleMixin.java

-package net.fabricmc.example.mixin;
+package com.example.mixin;
 
-import net.fabricmc.example.ExampleMod;
-import net.minecraft.client.gui.screen.TitleScreen;
+import net.minecraft.server.MinecraftServer;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
-@Mixin(TitleScreen.class)
+@Mixin(MinecraftServer.class)
 public class ExampleMixin {
-	@Inject(at = @At("HEAD"), method = "init()V")
+	@Inject(at = @At("HEAD"), method = "loadWorld")
 	private void init(CallbackInfo info) {
-		ExampleMod.LOGGER.info("This line is printed by an example mod mixin!");
+		// This code is injected into the start of MinecraftServer.loadWorld()V
 	}
 }
\ No newline at end of file

src/main/resources/fabric.mod.json

@@ -2,8 +2,7 @@
 	"schemaVersion": 1,
 	"id": "modid",
 	"version": "${version}",
-
-  "name": "Example Mod",
+	"name": "Example mod",
 	"description": "This is an example description! Tell everyone what your mod is about!",
 	"authors": [
 		"Me!"
@@ -12,25 +11,29 @@
 		"homepage": "https://fabricmc.net/",
 		"sources": "https://github.com/FabricMC/fabric-example-mod"
 	},
-
 	"license": "CC0-1.0",
 	"icon": "assets/modid/icon.png",
-
 	"environment": "*",
 	"entrypoints": {
 		"main": [
-      "net.fabricmc.example.ExampleMod"
+			"com.example.ExampleMod"
+		],
+		"client": [
+			"com.example.ExampleModClient"
 		]
 	},
 	"mixins": [
-    "modid.mixins.json"
+		"modid.mixins.json",
+		{
+			"config": "modid.client.mixins.json",
+			"environment": "client"
+		}
 	],
-
 	"depends": {
-    "fabricloader": ">=0.14.19",
-    "fabric-api": "*",
-    "minecraft": "~1.19.4",
-    "java": ">=17"
+		"fabricloader": ">=0.14.21",
+		"minecraft": "~1.20",
+		"java": ">=17",
+		"fabric-api": "*"
 	},
 	"suggests": {
 		"another-mod": "*"

src/main/resources/modid.mixins.json

 {
 	"required": true,
-  "minVersion": "0.8",
-  "package": "net.fabricmc.example.mixin",
+	"package": "com.example.mixin",
 	"compatibilityLevel": "JAVA_17",
 	"mixins": [
-  ],
-  "client": [
 		"ExampleMixin"
 	],
 	"injectors": {