me.themallard.bitmmo.impl.plugin.playerhook.PlayerPlugin.java Source code

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Here is the source code for me.themallard.bitmmo.impl.plugin.playerhook.PlayerPlugin.java

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/* Copyright (C) 2015 maaatts
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>. */

package me.themallard.bitmmo.impl.plugin.playerhook;

import org.nullbool.api.util.ClassStructure;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.tree.ClassNode;

import com.sun.xml.internal.ws.org.objectweb.asm.Type;

import me.themallard.bitmmo.api.util.Filter;
import me.themallard.bitmmo.impl.plugin.Plugin;
import me.themallard.bitmmo.impl.plugin.SimplePlugin;

@Plugin
public class PlayerPlugin extends SimplePlugin implements Opcodes {
    public PlayerPlugin() {
        super("PlayerHook");
        addFilter(new Filter<ClassNode>() {
            @Override
            public boolean accept(ClassNode cn) {
                return getRefactoredName(cn.name) == "Player";
            }
        });

        registerDependency(ClassStructure.create(IPlayer.class.getResourceAsStream("IPlayer.class")));
    }

    @Override
    public void run(ClassNode cn) {
        MethodVisitor mv = cn.visitMethod(Opcodes.ACC_PUBLIC, "getPosition",
                "()" + "Lme/themallard/bitmmo/impl/plugin/position/IPosition;", null, null);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitFieldInsn(Opcodes.GETFIELD, "Entity", "position", "LPosition;");
        mv.visitInsn(
                Type.getType("Lme/themallard/bitmmo/impl/plugin/position/IPosition;").getOpcode(Opcodes.IRETURN));
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
}