forge/src/main/resources/META-INF/LevelRenderer.js

   1 var Opcodes = Java.type("org.objectweb.asm.Opcodes");
   2 var VarInsnNode = Java.type("org.objectweb.asm.tree.VarInsnNode");
   3 var MethodInsnNode = Java.type("org.objectweb.asm.tree.MethodInsnNode");
   4 var ASMAPI = Java.type("net.minecraftforge.coremod.api.ASMAPI");
   5
   6 function transformMethod(method) {
   7     var instructions = method.instructions;
   8     instructions.insert(new MethodInsnNode(Opcodes.INVOKESTATIC, "me/shedaniel/lightoverlay/forge/mixin/MixinLevelRenderer", "setupTerrain", "(Lnet/minecraft/client/renderer/culling/Frustum;)V", false));
   9     instructions.insert(new VarInsnNode(Opcodes.ALOAD, 2));
  10 }
  11
  12 function initializeCoreMod() {
  13     return {
  14         "lightoverlay": {
  15             'target': {
  16                 'type': 'CLASS',
  17                 'name': 'net.minecraft.client.renderer.LevelRenderer'
  18             },
  19             'transformer': function (classNode) {
  20                 var setupRender = ASMAPI.mapMethod("m_109695_");
  21                 for (i in classNode.methods) {
  22                     var method = classNode.methods[i];
  23                     if (method.name === setupRender) {
  24                         transformMethod(method)
  25                         break;
  26                     }
  27                 }
  28                 return classNode;
  29             }
  30         }
  31     }
  32 }