update forge and setup mixins

build.gradle

@@ -3,9 +3,11 @@ buildscript {
         maven { url = 'https://files.minecraftforge.net/maven' }
         jcenter()
         mavenCentral()
+        maven { url='https://dist.creeper.host/Sponge/maven' }
     }
     dependencies {
         classpath group: 'net.minecraftforge.gradle', name: 'ForgeGradle', version: '3.+', changing: true
+        classpath group: 'org.spongepowered', name: 'mixingradle', version: '0.7-SNAPSHOT'
     }
 }
 plugins {
@@ -35,6 +37,8 @@ minecraft {
     runs {		
 		client {
             workingDirectory project.file('run')
+            property 'mixin.env.disableRefMap', 'true'
+            arg '-mixin.config=create.mixins.json'
             property 'forge.logging.console.level', 'info'
             property 'fml.earlyprogresswindow', 'false'
             mods {
@@ -46,6 +50,8 @@ minecraft {
 
         server {
             workingDirectory project.file('run/server')
+            property 'mixin.env.disableRefMap', 'true'
+            arg '-mixin.config=create.mixins.json'
             property 'forge.logging.console.level', 'info'
             mods {
                 create {
@@ -131,7 +137,8 @@ jar {
             "Implementation-Title": project.name,
             "Implementation-Version": "${version}",
             "Implementation-Vendor" :"simibubi",
-            "Implementation-Timestamp": new Date().format("yyyy-MM-dd'T'HH:mm:ssZ")
+            "Implementation-Timestamp": new Date().format("yyyy-MM-dd'T'HH:mm:ssZ"),
+            "MixinConfigs": "create.mixins.json"
         ])
     }
 }
@@ -200,3 +207,9 @@ curseforge {
         }
     }
 }
+
+apply plugin: 'org.spongepowered.mixin'
+
+mixin {
+    add sourceSets.main, "create.refmap.json"
+}

gradle.properties

@@ -6,7 +6,7 @@ org.gradle.daemon=false
 # mod version info
 mod_version=0.3c
 minecraft_version=1.15.2
-forge_version=31.2.31
+forge_version=31.2.47
 
 # dependency versions
 registrate_version=0.0.4.18

src/main/java/com/simibubi/create/foundation/mixin/LightUpdateMixin.java

@@ -0,0 +1,18 @@
+package com.simibubi.create.foundation.mixin;
+
+import net.minecraft.client.multiplayer.ClientChunkProvider;
+import net.minecraft.util.math.SectionPos;
+import net.minecraft.world.LightType;
+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(ClientChunkProvider.class)
+public class LightUpdateMixin {
+
+    @Inject(at = @At("HEAD"), method = "markLightChanged(Lnet/minecraft/world/LightType;Lnet/minecraft/util/math/SectionPos;)V")
+    private void onLightUpdate(LightType type, SectionPos pos, CallbackInfo ci) {
+
+    }
+}

src/main/java/com/simibubi/create/foundation/mixin/RenderInLayerMixin.java

@@ -0,0 +1,21 @@
+package com.simibubi.create.foundation.mixin;
+
+import com.mojang.blaze3d.matrix.MatrixStack;
+import net.minecraft.client.multiplayer.ClientChunkProvider;
+import net.minecraft.client.renderer.RenderType;
+import net.minecraft.client.renderer.WorldRenderer;
+import net.minecraft.util.math.SectionPos;
+import net.minecraft.world.LightType;
+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(WorldRenderer.class)
+public class RenderInLayerMixin {
+
+    @Inject(at = @At("HEAD"), method = "renderLayer")
+    private void renderLayer(RenderType type, MatrixStack stack, double cameraX, double cameraY, double cameraZ, CallbackInfo ci) {
+
+    }
+}

src/main/resources/create.mixins.json

@@ -0,0 +1,14 @@
+{
+    "required": true,
+    "package": "com.simibubi.create.foundation.mixin",
+    "compatibilityLevel": "JAVA_8",
+    "refmap": "create.refmap.json",
+    "client": [
+        "LightUpdateMixin",
+        "RenderInLayerMixin"
+    ],
+    "injectors": {
+        "defaultRequire": 1
+    },
+    "minVersion": "0.8"
+}