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package moe.nea.firmament.init;
import me.shedaniel.mm.api.ClassTinkerers;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.InsnNode;
import org.objectweb.asm.tree.MethodInsnNode;
import org.objectweb.asm.tree.MethodNode;
import org.objectweb.asm.tree.VarInsnNode;
import java.lang.reflect.Modifier;
import java.util.Objects;
public class ClientPlayerRiser extends RiserUtils {
@IntermediaryName(net.minecraft.entity.player.PlayerEntity.class)
String PlayerEntity;
@IntermediaryName(net.minecraft.world.World.class)
String World;
String GameProfile = "com.mojang.authlib.GameProfile";
@IntermediaryName(net.minecraft.util.math.BlockPos.class)
String BlockPos;
@IntermediaryName(net.minecraft.client.network.AbstractClientPlayerEntity.class)
String AbstractClientPlayerEntity;
String GuiPlayer = "moe.nea.firmament.gui.entity.GuiPlayer";
// World world, BlockPos pos, float yaw, GameProfile gameProfile
Type constructorDescriptor = Type.getMethodType(Type.VOID_TYPE, getTypeForClassName(World), getTypeForClassName(BlockPos), Type.FLOAT_TYPE, getTypeForClassName(GameProfile));
private void mapClassNode(ClassNode classNode, Type superClass) {
for (MethodNode method : classNode.methods) {
if (Objects.equals(method.name, "<init>") && Type.getMethodType(method.desc).equals(constructorDescriptor)) {
modifyConstructor(method, superClass);
return;
}
}
var node = new MethodNode(Opcodes.ASM9, "<init>", constructorDescriptor.getDescriptor(), null, null);
classNode.methods.add(node);
modifyConstructor(node, superClass);
}
private void modifyConstructor(MethodNode method, Type superClass) {
method.access = (method.access | Modifier.PUBLIC) & ~Modifier.PRIVATE & ~Modifier.PROTECTED;
if (method.instructions.size() != 0) return; // Some other mod has already made a constructor here
// World world, BlockPos pos, float yaw, GameProfile gameProfile
// ALOAD this
method.instructions.add(new VarInsnNode(Opcodes.ALOAD, 0));
// ALOAD World
method.instructions.add(new VarInsnNode(Opcodes.ALOAD, 1));
// ALOAD BlockPos
method.instructions.add(new VarInsnNode(Opcodes.ALOAD, 2));
// ALOAD yaw
method.instructions.add(new VarInsnNode(Opcodes.FLOAD, 3));
// ALOAD gameProfile
method.instructions.add(new VarInsnNode(Opcodes.ALOAD, 4));
// Call super
method.instructions.add(new MethodInsnNode(Opcodes.INVOKESPECIAL, superClass.getInternalName(), "<init>", constructorDescriptor.getDescriptor(), false));
// Return
method.instructions.add(new InsnNode(Opcodes.RETURN));
}
@Override
public void addTinkerers() {
ClassTinkerers.addTransformation(AbstractClientPlayerEntity, it -> mapClassNode(it, getTypeForClassName(PlayerEntity)));
ClassTinkerers.addTransformation(GuiPlayer, it -> mapClassNode(it, getTypeForClassName(AbstractClientPlayerEntity)));
}
}
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