107 lines
3.7 KiB
Java
107 lines
3.7 KiB
Java
package me.rigamortis.seppuku.impl.patch;
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import me.rigamortis.seppuku.Seppuku;
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import me.rigamortis.seppuku.api.event.world.EventLandOnSlime;
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import me.rigamortis.seppuku.api.event.world.EventWalkOnSlime;
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import me.rigamortis.seppuku.api.patch.ClassPatch;
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import me.rigamortis.seppuku.api.patch.MethodPatch;
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import me.rigamortis.seppuku.impl.management.PatchManager;
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import org.objectweb.asm.Type;
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import org.objectweb.asm.tree.*;
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import static org.objectweb.asm.Opcodes.*;
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/**
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* Author Seth
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* 4/16/2019 @ 3:37 AM.
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*/
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public final class BlockSlimePatch extends ClassPatch {
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public BlockSlimePatch() {
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super("net.minecraft.block.BlockSlime", "atu");
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}
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/**
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* This is where minecraft slows us down while walking on slime blocks
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*
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* @param methodNode
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* @param env
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*/
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@MethodPatch(
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mcpName = "onEntityWalk",
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notchName = "a",
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mcpDesc = "(Lnet/minecraft/world/World;Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/entity/Entity;)V",
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notchDesc = "(Lamu;Let;Lvg;)V")
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public void onEntityWalk(MethodNode methodNode, PatchManager.Environment env) {
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//create a list of instructions and add the needed instructions to call our hook function
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final InsnList insnList = new InsnList();
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//call our hook function
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insnList.add(new MethodInsnNode(INVOKESTATIC, Type.getInternalName(this.getClass()), "onEntityWalkHook", "()Z", false));
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//add a label to jump to
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final LabelNode jmp = new LabelNode();
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//add if equals and pass the label
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insnList.add(new JumpInsnNode(IFEQ, jmp));
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//add return so the rest of the function doesn't get called
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insnList.add(new InsnNode(RETURN));
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//add our label
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insnList.add(jmp);
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//insert the list of instructions at the top of the function
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methodNode.instructions.insert(insnList);
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}
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/**
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* Our onEntityWalk hook
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* Used to stop minecraft from slowing us down while
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* walking on slime blocks
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*
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* @return
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*/
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public static boolean onEntityWalkHook() {
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final EventWalkOnSlime event = new EventWalkOnSlime();
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Seppuku.INSTANCE.getEventManager().dispatchEvent(event);
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return event.isCanceled();
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}
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/**
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* This is where minecraft makes us bounce when we land on a slime
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*
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* @param methodNode
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* @param env
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*/
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@MethodPatch(
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mcpName = "onLanded",
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notchName = "a",
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mcpDesc = "(Lnet/minecraft/world/World;Lnet/minecraft/entity/Entity;)V",
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notchDesc = "(Lamu;Lvg;)V")
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public void onLanded(MethodNode methodNode, PatchManager.Environment env) {
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//create a list of instructions and add the needed instructions to call our hook function
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final InsnList insnList = new InsnList();
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//call our hook function
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insnList.add(new MethodInsnNode(INVOKESTATIC, Type.getInternalName(this.getClass()), "onLanded", "()Z", false));
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//add a label to jump to
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final LabelNode jmp = new LabelNode();
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//add if equals and pass the label
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insnList.add(new JumpInsnNode(IFEQ, jmp));
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//add return so the rest of the function doesn't get called
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insnList.add(new InsnNode(RETURN));
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//add our label
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insnList.add(jmp);
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//insert the list of instructions at the top of the function
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methodNode.instructions.insert(insnList);
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}
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/**
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* Our onLanded hook used to remove slime bouncing
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*
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* @return
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*/
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public static boolean onLanded() {
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final EventLandOnSlime event = new EventLandOnSlime();
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Seppuku.INSTANCE.getEventManager().dispatchEvent(event);
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return event.isCanceled();
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}
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}
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