naftoreiclag.dontdigleft.transformer.ResizePlayerBoudingBox.java Source code

Introduction

Here is the source code for naftoreiclag.dontdigleft.transformer.ResizePlayerBoudingBox.java

Source

/* Copyright (c) 2014 "Naftoreiclag" https://github.com/Naftoreiclag
 *
 * Distributed under the BSD 2-Clause License (http://opensource.org/licenses/BSD-2-Clause)
 * See accompanying file LICENSE
 */

package naftoreiclag.dontdigleft.transformer;

import net.minecraft.launchwrapper.IClassTransformer;

import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.Label;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.tree.*;

import static org.objectweb.asm.Opcodes.*;

public class ResizePlayerBoudingBox implements IClassTransformer {
    @Override
    public byte[] transform(String name, String transformedName, byte[] basicClass) {
        if (name.equals("net.minecraft.entity.player.EntityPlayer") || name.equals("xl")) {
            ClassNode classNode = new ClassNode();
            ClassReader classReader = new ClassReader(basicClass);

            classReader.accept(classNode, 0);

            MethodNode mv = new MethodNode(ASM4, ACC_PROTECTED, "setSize", "(FF)V", null, null);

            mv.visitCode();
            Label l0 = new Label();
            mv.visitLabel(l0);
            mv.visitVarInsn(FLOAD, 1);
            mv.visitLdcInsn(new Float("0.6"));
            mv.visitInsn(FCMPL);
            Label l1 = new Label();
            mv.visitJumpInsn(IFNE, l1);
            mv.visitVarInsn(FLOAD, 2);
            mv.visitLdcInsn(new Float("1.8"));
            mv.visitInsn(FCMPL);
            mv.visitJumpInsn(IFNE, l1);
            Label l2 = new Label();
            mv.visitLabel(l2);
            mv.visitLdcInsn(new Float("0.6"));
            mv.visitVarInsn(FSTORE, 1);
            Label l3 = new Label();
            mv.visitLabel(l3);
            mv.visitLdcInsn(new Float("0.6"));
            mv.visitVarInsn(FSTORE, 2);
            mv.visitLabel(l1);
            mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(FLOAD, 1);
            mv.visitVarInsn(FLOAD, 2);
            mv.visitMethodInsn(INVOKESPECIAL, "net/minecraft/entity/Entity", "setSize", "(FF)V");
            Label l4 = new Label();
            mv.visitLabel(l4);
            mv.visitInsn(RETURN);
            Label l5 = new Label();
            mv.visitLabel(l5);
            mv.visitLocalVariable("this", "Lnet/minecraft/entity/player/EntityPlayer;", null, l0, l5, 0);
            mv.visitLocalVariable("par1", "F", null, l0, l5, 1);
            mv.visitLocalVariable("par2", "F", null, l0, l5, 2);
            mv.visitMaxs(3, 3);
            mv.visitEnd();

            ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
            classNode.accept(cw);
            mv.accept(cw);

            return cw.toByteArray();
        } else {
            return basicClass;
        }
    }

    /*
    protected void setSize(float par1, float par2)
     {
       if(par1 == 0.6f && par2 == 1.8f)
       {
     par1 = 0.6f;
     par2 = 0.6f;
       }
           
       super.setSize(par1, par2);
     }
    */
}