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package ftbsc.bscv.patches;
import ftbsc.lll.processor.annotations.Injector;
import ftbsc.lll.processor.annotations.Patch;
import ftbsc.lll.processor.annotations.Target;
import ftbsc.lll.tools.InsnSequence;
import ftbsc.lll.tools.PatternMatcher;
import net.minecraft.client.entity.player.ClientPlayerEntity;
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 NoSlowPatch {
@Cancelable
public static class PlayerSlowDownEvent extends Event { }
public static boolean shouldSlowPlayer() {
return MinecraftForge.EVENT_BUS.post(new PlayerSlowDownEvent());
}
@Patch(value = ClientPlayerEntity.class, reason = "add hook to cancel slowing down effect of using items")
public abstract static class SlowDownOverride implements Opcodes {
@Target
abstract void aiStep();
@Injector
public void inject(ClassNode clazz, MethodNode main) {
AbstractInsnNode found = PatternMatcher.builder()
.opcodes(ALOAD, INVOKEVIRTUAL, IFEQ, ALOAD, INVOKEVIRTUAL, IFNE)
.ignoreFrames()
.ignoreLabels()
.ignoreLineNumbers()
.build()
.find(main)
.getLast();
AbstractInsnNode after = PatternMatcher.builder()
.opcodes(ALOAD, ICONST_0, PUTFIELD)
.ignoreFrames()
.ignoreLabels()
.ignoreLineNumbers()
.build()
.find(main)
.getLast();
LabelNode skip = new LabelNode(); // TODO can we get the label that the original IF is jumping to without adding one ourselves?
InsnSequence is = new InsnSequence();
is.add(new MethodInsnNode(
INVOKESTATIC,
"ftbsc/bscv/patches/NoSlowPatch",
"shouldSlowPlayer",
"()Z"
));
is.add(new JumpInsnNode(IFNE, skip));
main.instructions.insert(found, is);
main.instructions.insert(after, skip);
}
}
}
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ftbsc