From 376058ae61197c2416b75427d2e438198c7c6136 Mon Sep 17 00:00:00 2001
From: Sollace <sollacea@gmail.com>
Date: Thu, 24 Sep 2020 00:14:23 +0200
Subject: [PATCH] Changelings disguised as spiders can climb walls

---
 .../unicopia/mixin/MixinLivingEntity.java     | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/main/java/com/minelittlepony/unicopia/mixin/MixinLivingEntity.java b/src/main/java/com/minelittlepony/unicopia/mixin/MixinLivingEntity.java
index e5ff403e..b7b1f4aa 100644
--- a/src/main/java/com/minelittlepony/unicopia/mixin/MixinLivingEntity.java
+++ b/src/main/java/com/minelittlepony/unicopia/mixin/MixinLivingEntity.java
@@ -1,6 +1,9 @@
 package com.minelittlepony.unicopia.mixin;
 
+import java.util.Optional;
+
 import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Constant;
 import org.spongepowered.asm.mixin.injection.Inject;
@@ -8,18 +11,24 @@ import org.spongepowered.asm.mixin.injection.ModifyConstant;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
+import com.minelittlepony.unicopia.ability.magic.spell.DisguiseSpell;
 import com.minelittlepony.unicopia.entity.Creature;
 import com.minelittlepony.unicopia.entity.PonyContainer;
+import com.minelittlepony.unicopia.entity.player.Pony;
 import com.minelittlepony.unicopia.entity.Equine;
 
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.LivingEntity;
+import net.minecraft.entity.mob.SpiderEntity;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.util.math.BlockPos;
 
 @Mixin(LivingEntity.class)
 abstract class MixinLivingEntity extends Entity implements PonyContainer<Equine<?>> {
 
+    @Shadow
+    private Optional<BlockPos> climbingPos;
+
     private Equine<?> caster;
 
     private MixinLivingEntity() { super(null, null); }
@@ -37,6 +46,17 @@ abstract class MixinLivingEntity extends Entity implements PonyContainer<Equine<
         return caster;
     }
 
+    @Inject(method = "isClimbing()Z", at = @At("HEAD"), cancellable = true)
+    public void onIsClimbing(CallbackInfoReturnable<Boolean> info) {
+        if (get() instanceof Pony && horizontalCollision) {
+            DisguiseSpell disguise = ((Pony)get()).getSpell(DisguiseSpell.class, false);
+            if (disguise != null && disguise.getDisguise() instanceof SpiderEntity) {
+                climbingPos = Optional.of(getBlockPos());
+                info.setReturnValue(true);
+            }
+        }
+    }
+
     @Inject(method = "canSee(Lnet/minecraft/entity/Entity;)Z", at = @At("HEAD"), cancellable = true)
     private void onCanSee(Entity other, CallbackInfoReturnable<Boolean> info) {
         if (get().isInvisible()) {