Add an option to fix MC-3304 (looting transferring to projectiles)

patches/server/0303-Add-an-option-to-fix-MC-3304-projectile-looting.patch

@@ -0,0 +1,37 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: MelnCat <melncatuwu@gmail.com>
+Date: Sat, 1 Oct 2022 11:33:15 -0700
+Subject: [PATCH] Add an option to fix MC-3304 (projectile looting)
+
+
+diff --git a/src/main/java/net/minecraft/world/level/storage/loot/functions/LootingEnchantFunction.java b/src/main/java/net/minecraft/world/level/storage/loot/functions/LootingEnchantFunction.java
+index 31918fa2eb38e42a5ea5366e559f25ea9d7d59ae..266fd680afb2482dfeaeb3b6bf0abc2873fae408 100644
+--- a/src/main/java/net/minecraft/world/level/storage/loot/functions/LootingEnchantFunction.java
++++ b/src/main/java/net/minecraft/world/level/storage/loot/functions/LootingEnchantFunction.java
+@@ -49,6 +49,12 @@ public class LootingEnchantFunction extends LootItemConditionalFunction {
+
+         if (entity instanceof LivingEntity) {
+             int i = EnchantmentHelper.getMobLooting((LivingEntity) entity);
++            // Purpur start
++            if (org.purpurmc.purpur.PurpurConfig.fixProjectileLootingTransfer
++                    && context.getParamOrNull(LootContextParams.DAMAGE_SOURCE) instanceof net.minecraft.world.damagesource.IndirectEntityDamageSource) {
++                i = 0;
++            }
++            // Purpur end
+             // CraftBukkit start - use lootingModifier if set by plugin
+             if (context.hasParam(LootContextParams.LOOTING_MOD)) {
+                 i = context.getParamOrNull(LootContextParams.LOOTING_MOD);
+diff --git a/src/main/java/org/purpurmc/purpur/PurpurConfig.java b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+index 8d12ba33da62b58f6390a812fd025ede6032ed88..7efdb3d71c065435dc365207bfc42a82ec36a8b1 100644
+--- a/src/main/java/org/purpurmc/purpur/PurpurConfig.java
++++ b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+@@ -566,4 +566,9 @@ public class PurpurConfig {
+             }
+         });
+     }
++
++    public static boolean fixProjectileLootingTransfer = false;
++    private static void fixProjectileLootingTransfer() {
++        fixProjectileLootingTransfer = getBoolean("settings.fix-projectile-looting-transfer", fixProjectileLootingTransfer);
++    }
+ }