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package ftbsc.bscv.patches;
import ftbsc.bscv.ICommons;
import ftbsc.lll.processor.annotations.Find;
import ftbsc.lll.processor.annotations.Injector;
import ftbsc.lll.processor.annotations.Patch;
import ftbsc.lll.processor.annotations.Target;
import ftbsc.lll.proxies.MethodProxy;
import ftbsc.lll.tools.InsnSequence;
import ftbsc.lll.tools.nodes.MethodProxyInsnNode;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.eventbus.api.Cancelable;
import net.minecraftforge.eventbus.api.Event;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.tree.*;
public class LiquidPushPatch implements ICommons {
@Cancelable
public static class PlayerLiquidPushEvent extends Event {}
public static boolean shouldCancelLiquidCollisions(PlayerEntity player) {
if (player.equals(MC.player)) {
return MinecraftForge.EVENT_BUS.post(new PlayerLiquidPushEvent());
}
return false;
}
@Patch(value = PlayerEntity.class, reason = "add hook to cancel liquid collisions")
public abstract static class LiquidCollisionsOverride implements Opcodes {
@Find(parent = LiquidPushPatch.class)
abstract MethodProxy shouldCancelLiquidCollisions();
@Target
abstract boolean isPushedByFluid();
@Injector
public void inject(ClassNode clazz, MethodNode main) {
LabelNode skip = new LabelNode();
InsnSequence is = new InsnSequence();
is.add(new VarInsnNode(ALOAD, 0));
is.add(new MethodProxyInsnNode(INVOKESTATIC, shouldCancelLiquidCollisions()));
is.add(new JumpInsnNode(IFEQ, skip));
is.add(new InsnNode(ICONST_0));
is.add(new InsnNode(IRETURN));
is.add(skip);
main.instructions.insert(is); // hook at top
}
}
}
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