From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: jmp <jasonpenilla2@me.com>
Date: Wed, 25 Nov 2020 23:20:44 -0800
Subject: [PATCH] Implement TargetHitEvent


diff --git a/src/main/java/net/minecraft/world/level/block/TargetBlock.java b/src/main/java/net/minecraft/world/level/block/TargetBlock.java
index bbaf90b30b07c97321541b8fe15d47975a34161d..a7215c9b9f0f191bbfe95cb1185c99a8d21ff785 100644
--- a/src/main/java/net/minecraft/world/level/block/TargetBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/TargetBlock.java
@@ -1,5 +1,6 @@
 package net.minecraft.world.level.block;
 
+import io.papermc.paper.event.block.TargetHitEvent; // Paper - Need to import because 'io' class exists in nms
 import java.util.Random;
 import net.minecraft.advancements.CriteriaTriggers;
 import net.minecraft.core.BlockPos;
@@ -34,13 +35,17 @@ public class TargetBlock extends Block {
     @Override
     public void onProjectileHit(Level world, BlockState state, BlockHitResult hit, Projectile projectile) {
         int i = updateRedstoneOutput((LevelAccessor) world, state, hit, (Entity) projectile);
-        Entity entity = projectile.getOwner();
+        // Paper start
+    }
+    private static void awardTargetHitCriteria(Projectile iprojectile, BlockHitResult movingobjectpositionblock, int i) {
+        // Paper end
+        Entity entity = iprojectile.getOwner();
 
         if (entity instanceof ServerPlayer) {
             ServerPlayer entityplayer = (ServerPlayer) entity;
 
             entityplayer.awardStat(Stats.TARGET_HIT);
-            CriteriaTriggers.TARGET_BLOCK_HIT.trigger(entityplayer, projectile, hit.getLocation(), i);
+            CriteriaTriggers.TARGET_BLOCK_HIT.trigger(entityplayer, iprojectile, movingobjectpositionblock.getLocation(), i);
         }
 
     }
@@ -49,6 +54,20 @@ public class TargetBlock extends Block {
         int i = getRedstoneStrength(movingobjectpositionblock, movingobjectpositionblock.getLocation());
         int j = entity instanceof AbstractArrow ? 20 : 8;
 
+        // Paper start
+        if (entity instanceof Projectile) {
+            final Projectile projectile = (Projectile) entity;
+            final org.bukkit.craftbukkit.block.CraftBlock craftBlock = org.bukkit.craftbukkit.block.CraftBlock.at(world, movingobjectpositionblock.getBlockPos());
+            final org.bukkit.block.BlockFace blockFace = org.bukkit.craftbukkit.block.CraftBlock.notchToBlockFace(movingobjectpositionblock.getDirection());
+            final TargetHitEvent targetHitEvent = new TargetHitEvent((org.bukkit.entity.Projectile) projectile.getBukkitEntity(), craftBlock, blockFace, i);
+            if (targetHitEvent.callEvent()) {
+                i = targetHitEvent.getSignalStrength();
+                awardTargetHitCriteria(projectile, movingobjectpositionblock, i);
+            } else {
+                return i;
+            }
+        }
+        // Paper end
         if (!world.getBlockTicks().a(movingobjectpositionblock.getBlockPos(), state.getBlock())) {
             setOutputPower(world, state, i, movingobjectpositionblock.getBlockPos(), j);
         }