Implement wither targeting AI tweak, closes #179

README.md

@@ -84,6 +84,7 @@ All changes are toggleable via the config file.
 * Disable Fancy Missing Model: Improves rendering performance by removing the resource location text on missing models
 * Disable Narrator: Disables the narrator functionality entirely
 * Disable Sleeping: Disables skipping night by using a bed while making it still able to set spawn
+* Disable Wither Targeting AI: Disables withers targeting animals
 * Easy Breeding: Enables easy breeding of animals by tossing food on the ground
 * End Portal Parallax: Re-implements parallax rendering of the end portal from 1.11 and older
 * Fast Dye Blending: Replaces color lookup for sheep to check a predefined table rather than querying the recipe registry

src/main/java/mod/acgaming/universaltweaks/config/UTConfig.java

@@ -608,6 +608,11 @@ public static class TweaksEntitiesCategory
         @Config.Comment("Disables skipping night by using a bed while making it still able to set spawn")
         public boolean utSleepingToggle = false;
 
+        @Config.RequiresMcRestart
+        @Config.Name("Disable Wither Targeting AI")
+        @Config.Comment("Disables withers targeting animals")
+        public boolean utWitherAIToggle = false;
+
         @Config.RequiresMcRestart
         @Config.Name("Husk & Stray Spawning")
         @Config.Comment("Lets husks and strays spawn underground like regular zombies and skeletons")

src/main/java/mod/acgaming/universaltweaks/core/UTLoadingPlugin.java

@@ -112,6 +112,7 @@ public List<String> getMixinConfigs()
             "mixins.tweaks.blocks.lenientpaths.json",
             "mixins.tweaks.entities.ai.json",
             "mixins.tweaks.entities.ai.saddledwandering.json",
+            "mixins.tweaks.entities.ai.wither.json",
             "mixins.tweaks.entities.autojump.json",
             "mixins.tweaks.entities.burning.horses.json",
             "mixins.tweaks.entities.damage.collision.json",
@@ -196,6 +197,7 @@ public List<String> getMixinConfigs()
                 "mixins.tweaks.blocks.lenientpaths.json",
                 "mixins.tweaks.entities.ai.json",
                 "mixins.tweaks.entities.ai.saddledwandering.json",
+                "mixins.tweaks.entities.ai.wither.json",
                 "mixins.tweaks.entities.burning.horses.json",
                 "mixins.tweaks.entities.damage.collision.json",
                 "mixins.tweaks.entities.damage.falling.json",
@@ -373,6 +375,8 @@ public boolean shouldMixinConfigQueue(String mixinConfig)
                 return firstLaunch || UTConfigParser.isPresent("B:\"AI Replacement\"=true");
             case "mixins.tweaks.entities.ai.saddledwandering.json":
                 return firstLaunch || UTConfigParser.isPresent("B:\"No Saddled Wandering\"=true");
+            case "mixins.tweaks.entities.ai.wither.json":
+                return !firstLaunch && UTConfigParser.isPresent("B:\"Disable Wither Targeting AI\"=true");
             case "mixins.tweaks.entities.burning.horses.json":
                 return firstLaunch || UTConfigParser.isPresent("B:\"Burning Undead Horses\"=true");
             case "mixins.tweaks.entities.damage.collision.json":

src/main/java/mod/acgaming/universaltweaks/tweaks/entities/ai/wither/UTWitherAI.java

@@ -0,0 +1,32 @@
+package mod.acgaming.universaltweaks.tweaks.entities.ai.wither;
+
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.ai.EntityAIHurtByTarget;
+import net.minecraft.entity.ai.EntityAINearestAttackableTarget;
+import net.minecraft.entity.boss.EntityWither;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraftforge.event.entity.EntityJoinWorldEvent;
+import net.minecraftforge.fml.common.Mod;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+
+import mod.acgaming.universaltweaks.UniversalTweaks;
+import mod.acgaming.universaltweaks.config.UTConfig;
+
+@Mod.EventBusSubscriber(modid = UniversalTweaks.MODID)
+public class UTWitherAI
+{
+    @SubscribeEvent
+    public static void utWitherAI(EntityJoinWorldEvent event)
+    {
+        if (!UTConfig.TWEAKS_ENTITIES.utWitherAIToggle) return;
+        if (UTConfig.DEBUG.utDebugToggle) UniversalTweaks.LOGGER.debug("UTWitherAI ::: Entity join world event");
+        Entity entity = event.getEntity();
+        if (entity instanceof EntityWither)
+        {
+            EntityWither wither = (EntityWither) entity;
+            wither.targetTasks.taskEntries.clear();
+            wither.targetTasks.addTask(1, new EntityAIHurtByTarget(wither, false));
+            wither.targetTasks.addTask(2, new EntityAINearestAttackableTarget<>(wither, EntityPlayer.class, false, false));
+        }
+    }
+}

src/main/java/mod/acgaming/universaltweaks/tweaks/entities/ai/wither/mixin/UTWitherAIMixin.java

@@ -0,0 +1,18 @@
+package mod.acgaming.universaltweaks.tweaks.entities.ai.wither.mixin;
+
+import net.minecraft.entity.boss.EntityWither;
+
+import mod.acgaming.universaltweaks.config.UTConfig;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import zone.rong.mixinextras.injector.WrapWithCondition;
+
+@Mixin(EntityWither.class)
+public class UTWitherAIMixin
+{
+    @WrapWithCondition(method = "updateAITasks", at = @At(value = "INVOKE", target = "Lnet/minecraft/entity/boss/EntityWither;updateWatchedTargetId(II)V", ordinal = 3))
+    public boolean utWitherAI(EntityWither instance, int targetOffset, int newId)
+    {
+        return !UTConfig.TWEAKS_ENTITIES.utWitherAIToggle;
+    }
+}

src/main/resources/mixins.tweaks.entities.ai.wither.json

@@ -0,0 +1,7 @@
+{
+  "package": "mod.acgaming.universaltweaks.tweaks.entities.ai.wither.mixin",
+  "refmap": "universaltweaks.refmap.json",
+  "minVersion": "0.8",
+  "compatibilityLevel": "JAVA_8",
+  "mixins": ["UTWitherAIMixin"]
+}