src/main/resources/META-INF/NetworkManager.js

   1 var Opcodes = Java.type("org.objectweb.asm.Opcodes");
   2 var FieldNode = Java.type("org.objectweb.asm.tree.FieldNode");
   3 var InsnNode = Java.type("org.objectweb.asm.tree.InsnNode");
   4 var JumpInsnNode = Java.type("org.objectweb.asm.tree.JumpInsnNode");
   5 var LabelNode = Java.type("org.objectweb.asm.tree.LabelNode");
   6 var VarInsnNode = Java.type("org.objectweb.asm.tree.VarInsnNode");
   7 var MethodInsnNode = Java.type("org.objectweb.asm.tree.MethodInsnNode");
   8 var ASMAPI = Java.type("net.minecraftforge.coremod.api.ASMAPI");
   9
  10 function initializeCoreMod() {
  11     return {
  12         "smooth-scrolling-everywhere": {
  13             'target': {
  14                 'type': 'CLASS',
  15                 'name': 'net.minecraft.network.NetworkManager'
  16             },
  17             'transformer': function (classNode) {
  18                 var processPacket = ASMAPI.mapMethod("func_197664_a");
  19                 for (i in classNode.methods) {
  20                     var method = classNode.methods[i];
  21                     if (method.name === processPacket) {
  22                         var instructions = method.instructions;
  23                         var insnArray = instructions.toArray();
  24                         for (j in insnArray) {
  25                             var instruction = insnArray[j];
  26                             if (instruction instanceof LabelNode) {
  27                                 instructions.insertBefore(instruction, new LabelNode());
  28                                 instructions.insertBefore(instruction, new VarInsnNode(Opcodes.ALOAD, 0));
  29                                 instructions.insertBefore(instruction, new MethodInsnNode(Opcodes.INVOKESTATIC, "me/shedaniel/lightoverlay/LightOverlay", "processPacket", "(Lnet/minecraft/network/IPacket;)V", false));
  30                                 break;
  31                             }
  32                         }
  33                         break;
  34                     }
  35                 }
  36                 return classNode;
  37             }
  38         }
  39     }
  40 }