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

   1 var Opcodes = Java.type("org.objectweb.asm.Opcodes");
   2 var LabelNode = Java.type("org.objectweb.asm.tree.LabelNode");
   3 var VarInsnNode = Java.type("org.objectweb.asm.tree.VarInsnNode");
   4 var MethodInsnNode = Java.type("org.objectweb.asm.tree.MethodInsnNode");
   5 var ASMAPI = Java.type("net.minecraftforge.coremod.api.ASMAPI");
   6
   7 function initializeCoreMod() {
   8     return {
   9         "light-overlay-forge": {
  10             'target': {
  11                 'type': 'CLASS',
  12                 'name': 'net.minecraft.client.renderer.debug.DebugRenderer'
  13             },
  14             'transformer': function (classNode) {
  15                 var render = ASMAPI.mapMethod("func_229019_a_");
  16                 var setupTerrain = ASMAPI.mapMethod("func_228437_a_");
  17                 for (var i in classNode.methods) {
  18                     var method = classNode.methods[i];
  19                     if (method.name === render) {
  20                         var instructions = method.instructions;
  21                         var insnArray = instructions.toArray();
  22                         for (j in insnArray) {
  23                             var instruction = insnArray[j];
  24                             if (instruction instanceof LabelNode) {
  25                                 instructions.insertBefore(instruction, new LabelNode());
  26                                 instructions.insertBefore(instruction, new VarInsnNode(Opcodes.ALOAD, 0));
  27                                 instructions.insertBefore(instruction, new MethodInsnNode(Opcodes.INVOKESTATIC, "me/shedaniel/lightoverlay/forge/LightOverlayClient", "renderWorldLast", "()V", false));
  28                                 break;
  29                             }
  30                         }
  31                         break;
  32                     } else if (method.name === setupTerrain) {
  33                         var instructions = method.instructions;
  34                         instructions.insertBefore(new LabelNode());
  35                         instructions.insertBefore(new VarInsnNode(Opcodes.ALOAD, 2));
  36                         instructions.insertBefore(new MethodInsnNode(Opcodes.INVOKESTATIC, "me/shedaniel/lightoverlay/forge/LightOverlayClient", "updateFrustum", "(Lnet/minecraft/client/renderer/culling/ClippingHelper;)V", false));
  37                     }
  38                 }
  39                 return classNode;
  40             }
  41         }
  42     }
  43 }