Simplify last stand mixin

src/main/java/mod/acgaming/universaltweaks/UniversalTweaks.java

@@ -28,7 +28,6 @@
 import mod.acgaming.universaltweaks.mods.elenaidodge2.UTED2Burning;
 import mod.acgaming.universaltweaks.mods.elenaidodge2.UTED2Sprinting;
 import mod.acgaming.universaltweaks.mods.mekanism.UTMekanismFixes;
-import mod.acgaming.universaltweaks.mods.openblocks.UTOpenBlocksEvents;
 import mod.acgaming.universaltweaks.mods.projectred.UTProjectRedWorldEvents;
 import mod.acgaming.universaltweaks.mods.simplyjetpacks.UTSimplyJetpacksEvents;
 import mod.acgaming.universaltweaks.mods.simplyjetpacks.network.message.MessageClientStatesReset;
@@ -156,7 +155,6 @@ public void init(FMLInitializationEvent event)
         if (Loader.isModLoaded("elenaidodge2") && UTConfigMods.ELENAI_DODGE_2.utED2ExtinguishingDodgeChance > 0) MinecraftForge.EVENT_BUS.register(new UTED2Burning());
         if (Loader.isModLoaded("elenaidodge2") && UTConfigMods.ELENAI_DODGE_2.utED2SprintingFeatherConsumption > 0) MinecraftForge.EVENT_BUS.register(new UTED2Sprinting());
         if (Loader.isModLoaded("mekanism") && UTConfigMods.MEKANISM.utDuplicationFixesToggle) UTMekanismFixes.fixBinRecipes();
-        if (Loader.isModLoaded("openblocks") && UTConfigMods.OPEN_BLOCKS.utLastStandFixToggle) MinecraftForge.EVENT_BUS.register(new UTOpenBlocksEvents());
         if (Loader.isModLoaded("projectred-exploration") && UTConfigMods.PROJECTRED.utDuplicationFixesToggle) MinecraftForge.EVENT_BUS.register(new UTProjectRedWorldEvents());
         // Unregister reason: disable beta warning.
         if (Loader.isModLoaded("railcraft") && UTConfigMods.RAILCRAFT.utNoBetaWarningToggle && UTReflectionUtil.isClassLoaded("mods.railcraft.common.core.BetaMessageTickHandler"))

src/main/java/mod/acgaming/universaltweaks/mods/openblocks/mixin/UTLastStandEnchantmentsHandlerMixin.java

@@ -1,20 +1,28 @@
 package mod.acgaming.universaltweaks.mods.openblocks.mixin;
 
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraftforge.event.entity.living.LivingDamageEvent;
 import net.minecraftforge.event.entity.living.LivingHurtEvent;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 
 import mod.acgaming.universaltweaks.mods.openblocks.WrappedLivingHurtEvent;
 import openblocks.enchantments.LastStandEnchantmentsHandler;
 import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 // Courtesy of jchung01
-@Mixin(value = LastStandEnchantmentsHandler.class, remap = false)
-public class UTLastStandEnchantmentsHandlerMixin
+@Mixin(value = LastStandEnchantmentsHandler.class, remap = false, priority = 1010)
+public abstract class UTLastStandEnchantmentsHandlerMixin
 {
+    @Shadow
+    public abstract void onHurt(LivingHurtEvent e);
+
     /**
-     * Repurpose onHurt as a passthrough method for {@link mod.acgaming.universaltweaks.mods.openblocks.UTOpenBlocksEvents#handleLastStand}
+     * Repurpose onHurt as a passthrough method for {@link this#ut$fixLastStand}
      * instead of an event subscriber.
      * Uses a wrapper for maximum compatibilty with other mods (e.g. DimHopper Tweaks) that may mixin into this method's logic.
      *
@@ -28,4 +36,23 @@ private void utCheckEvent(LivingHurtEvent event, CallbackInfo ci)
             ci.cancel();
         }
     }
+
+    /**
+     * Last Stand in 1.12 uses LivingHurtEvent, which is the pre-mitigation damage (before armor, potions, etc).
+     * It should use LivingDamageEvent, which is the post-mitigation damage.
+     * This was actually explicitly fixed in older versions (1.10) but once again uses the wrong event in 1.12.
+     */
+    @Unique
+    @SubscribeEvent
+    public void ut$fixLastStand(LivingDamageEvent event)
+    {
+        // This is a double check, to avoid extra allocations.
+        if (event.getEntityLiving() instanceof EntityPlayer)
+        {
+            WrappedLivingHurtEvent eventIn = new WrappedLivingHurtEvent(event.getEntityLiving(), event.getSource(), event.getAmount());
+            this.onHurt(eventIn);
+            event.setAmount(eventIn.getAmount());
+            event.setCanceled(eventIn.isCanceled());
+        }
+    }
 }

src/main/resources/mixins.mods.openblocks.json

@@ -3,5 +3,5 @@
   "refmap": "universaltweaks.refmap.json",
   "minVersion": "0.8",
   "compatibilityLevel": "JAVA_8",
-  "mixins": ["UTConfigMixin", "UTLastStandEnchantmentsHandlerMixin"]
+  "mixins": ["UTLastStandEnchantmentsHandlerMixin"]
 }