JukeboxTransformer.java

package net.cazzar.mods.jukeboxfix.asm;

import net.cazzar.corelib.asm.MethodTransformer;
import net.cazzar.corelib.lib.LogHelper;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.tree.*;

/**
 * @Author: Cayde
 */
public class JukeboxTransformer extends MethodTransformer {
    private final String JUKEBOX_CLASS = "net.minecraft.tileentity.TileEntityRecordPlayer";

    public JukeboxTransformer() {
        logger = new LogHelper("JukeboxFix");

        addClass(JUKEBOX_CLASS);

        addMapping("updateEntity", "func_70316_g");
    }

    @Override
    public void transform(ClassNode classNode) {
        InsnList updateEntity = new InsnList();

        updateEntity.add(new MethodInsnNode(Opcodes.INVOKESTATIC,  "net/minecraft/client/Minecraft", "getMinecraft", "()Lnet/minecraft/client/Minecraft;"));
        updateEntity.add(new FieldInsnNode(Opcodes.GETFIELD, "net/minecraft/client/Minecraft", "sndManager", "Lnet/minecraft/client/audio/SoundManager;"));
        updateEntity.add(new FieldInsnNode(Opcodes.GETFIELD, "net/minecraft/client/audio/SoundManager", "sndSystem", "Lpaulscode/sound/SoundSystem;"));
        updateEntity.add(new LdcInsnNode("streaming"));
        updateEntity.add(new LdcInsnNode(new Float(0.5)));
        updateEntity.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "net/minecraft/client/Minecraft", "getMinecraft", "()Lnet/minecraft/client/Minecraft;"));
        updateEntity.add(new FieldInsnNode(Opcodes.GETFIELD, "net/minecraft/client/Minecraft", "gameSettings", "Lnet/minecraft/client/settings/GameSettings;"));
        updateEntity.add(new FieldInsnNode(Opcodes.GETFIELD, "net/minecraft/client/settings/GameSettings", "soundVolume", "F"));
        updateEntity.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "paulscode/sound/SoundSystem", "setVolume", "(Ljava/lang/String;F)V"));

        replaceMethod(classNode, "updateEntity", "()Z", updateEntity);
    }
}