Paper/patches/server/0464-Add-EntityLoadCrossbowEvent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: JRoy <joshroy126@gmail.com>
Date: Wed, 7 Oct 2020 12:04:01 -0400
Subject: [PATCH] Add EntityLoadCrossbowEvent


diff --git a/src/main/java/net/minecraft/world/item/CrossbowItem.java b/src/main/java/net/minecraft/world/item/CrossbowItem.java
index f64cdfac1fc1333845ea4ea5efb7922f0ae39619..c39fa953accd6cf35672f452052cca42fe6f29d0 100644
--- a/src/main/java/net/minecraft/world/item/CrossbowItem.java
+++ b/src/main/java/net/minecraft/world/item/CrossbowItem.java
@@ -89,7 +89,14 @@ public class CrossbowItem extends ProjectileWeaponItem {
     public void releaseUsing(ItemStack stack, Level world, LivingEntity user, int remainingUseTicks) {
         int i = this.getUseDuration(stack, user) - remainingUseTicks;
         float f = getPowerForTime(i, stack, user);
-        if (f >= 1.0F && !isCharged(stack) && tryLoadProjectiles(user, stack)) {
+        // Paper start - Add EntityLoadCrossbowEvent
+        if (f >= 1.0F && !isCharged(stack)) {
+            final io.papermc.paper.event.entity.EntityLoadCrossbowEvent event = new io.papermc.paper.event.entity.EntityLoadCrossbowEvent(user.getBukkitLivingEntity(), stack.asBukkitMirror(), org.bukkit.craftbukkit.CraftEquipmentSlot.getHand(user.getUsedItemHand()));
+            if (!event.callEvent() || !tryLoadProjectiles(user, stack, event.shouldConsumeItem()) || !event.shouldConsumeItem()) {
+                if (user instanceof ServerPlayer player) player.containerMenu.sendAllDataToRemote();
+                return;
+            }
+            // Paper end - Add EntityLoadCrossbowEvent
             CrossbowItem.ChargingSounds chargingSounds = this.getChargingSounds(stack);
             chargingSounds.end()
                 .ifPresent(
@@ -107,8 +114,14 @@ public class CrossbowItem extends ProjectileWeaponItem {
         }
     }
 
-    private static boolean tryLoadProjectiles(LivingEntity shooter, ItemStack crossbow) {
-        List<ItemStack> list = draw(crossbow, shooter.getProjectile(crossbow), shooter);
+    @io.papermc.paper.annotation.DoNotUse // Paper - Add EntityLoadCrossbowEvent
+    private static boolean tryLoadProjectiles(LivingEntity shooter, ItemStack crossbow)  {
+        // Paper start - Add EntityLoadCrossbowEvent
+        return CrossbowItem.tryLoadProjectiles(shooter, crossbow, true);
+    }
+    private static boolean tryLoadProjectiles(LivingEntity shooter, ItemStack crossbow, boolean consume) {
+        List<ItemStack> list = draw(crossbow, shooter.getProjectile(crossbow), shooter, consume);
+        // Paper end - Add EntityLoadCrossbowEvent
         if (!list.isEmpty()) {
             crossbow.set(DataComponents.CHARGED_PROJECTILES, ChargedProjectiles.of(list));
             return true;
diff --git a/src/main/java/net/minecraft/world/item/ProjectileWeaponItem.java b/src/main/java/net/minecraft/world/item/ProjectileWeaponItem.java
index 56595dd3a0b7df4b5f9819ade797212278c8fd40..32dd0b13a0819f597d8a93c6bc3a155781067544 100644
--- a/src/main/java/net/minecraft/world/item/ProjectileWeaponItem.java
+++ b/src/main/java/net/minecraft/world/item/ProjectileWeaponItem.java
@@ -114,6 +114,11 @@ public abstract class ProjectileWeaponItem extends Item {
     }
 
     protected static List<ItemStack> draw(ItemStack stack, ItemStack projectileStack, LivingEntity shooter) {
+        // Paper start
+        return draw(stack, projectileStack, shooter, true);
+    }
+    protected static List<ItemStack> draw(ItemStack stack, ItemStack projectileStack, LivingEntity shooter, boolean consume) {
+        // Paper end
         if (projectileStack.isEmpty()) {
             return List.of();
         } else {
@@ -133,7 +138,7 @@ public abstract class ProjectileWeaponItem extends Item {
             ItemStack itemstack2 = projectileStack.copy();
 
             for (int k = 0; k < j; ++k) {
-                ItemStack itemstack3 = ProjectileWeaponItem.useAmmo(stack, k == 0 ? projectileStack : itemstack2, shooter, k > 0);
+                ItemStack itemstack3 = ProjectileWeaponItem.useAmmo(stack, k == 0 ? projectileStack : itemstack2, shooter, k > 0 || !consume); // Paper
 
                 if (!itemstack3.isEmpty()) {
                     list.add(itemstack3);