make ScaredOfGargoyleGoal more reliable

src/main/java/galena/oreganized/mixin/MobMixin.java

@@ -0,0 +1,22 @@
+package galena.oreganized.mixin;
+
+import galena.oreganized.world.ScaredOfGargoyleGoal;
+import net.minecraft.world.entity.Mob;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(Mob.class)
+public class MobMixin {
+
+    @Inject(
+            method = "<init>",
+            at = @At("RETURN")
+    )
+    private void addScaredOfGargoyleGoal(CallbackInfo ci) {
+        var self = (Mob) (Object) this;
+        if(self.level() == null || self.level().isClientSide()) return;
+        ScaredOfGargoyleGoal.addGoal(self);
+    }
+}

src/main/java/galena/oreganized/world/ScaredOfGargoyleGoal.java

@@ -1,22 +1,18 @@
 package galena.oreganized.world;
 
-import galena.oreganized.Oreganized;
 import net.minecraft.nbt.NbtUtils;
-import net.minecraft.world.entity.Mob;
+import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.MobType;
 import net.minecraft.world.entity.PathfinderMob;
 import net.minecraft.world.entity.ai.goal.Goal;
 import net.minecraft.world.entity.ai.navigation.PathNavigation;
 import net.minecraft.world.entity.ai.util.DefaultRandomPos;
 import net.minecraft.world.level.pathfinder.Path;
 import net.minecraft.world.phys.Vec3;
-import net.minecraftforge.event.entity.EntityEvent;
-import net.minecraftforge.eventbus.api.SubscribeEvent;
-import net.minecraftforge.fml.common.Mod;
 
 import javax.annotation.Nullable;
+import java.util.EnumSet;
 
-@Mod.EventBusSubscriber(modid = Oreganized.MOD_ID)
 public class ScaredOfGargoyleGoal extends Goal {
 
     public static final String AVOID_TAG_KEY = "ScaredByGargoyle";
@@ -25,11 +21,9 @@ public class ScaredOfGargoyleGoal extends Goal {
 
     private final PathfinderMob mob;
 
-    @SubscribeEvent
-    public static void onMobSpawn(EntityEvent.EntityConstructing event) {
-        if(!(event.getEntity() instanceof Mob entity)) return;
-        if (entity.getMobType() == MobType.UNDEAD && entity instanceof PathfinderMob mob) {
-            entity.goalSelector.addGoal(1, new ScaredOfGargoyleGoal(mob));
+    public static void addGoal(Entity entity) {
+        if (entity instanceof PathfinderMob mob && mob.getMobType() == MobType.UNDEAD) {
+            mob.goalSelector.addGoal(1, new ScaredOfGargoyleGoal(mob));
         }
     }
 
@@ -43,6 +37,7 @@ public static void onMobSpawn(EntityEvent.EntityConstructing event) {
     public ScaredOfGargoyleGoal(PathfinderMob mob) {
         this.mob = mob;
         this.navigation = mob.getNavigation();
+        this.setFlags(EnumSet.of(Flag.MOVE, Flag.LOOK));
     }
 
     @Override

src/main/resources/oreganized.mixins.json

@@ -5,8 +5,8 @@
   "compatibilityLevel": "JAVA_17",
   "mixins": [
     "AbstractArrowMixin", "BlockMixin", "CrossbowMixin", "DispenserBlockMixin", "EnchantmentHelperMixin", "EntityMixin",
-    "FoodDataMixin", "IceBlockMixin", "LivingEntityMixin", "MobEffectInstanceMixin", "PillagerMixin", "PlayerMixin",
-    "compat.AirCurrentMixin", "compat.BellowBlockTileMixin", "compat.LogStrippingFakeRecipesMixin"
+    "FoodDataMixin", "IceBlockMixin", "LivingEntityMixin", "MobEffectInstanceMixin", "MobMixin", "PillagerMixin",
+    "PlayerMixin", "compat.AirCurrentMixin", "compat.BellowBlockTileMixin", "compat.LogStrippingFakeRecipesMixin"
   ],
   "client": [
     "client.GuiMixin", "client.HumanoidArmorLayerAccessor", "client.HumanoidArmorLayerMixin",