Paper/patches/server/0470-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 65f23bfb2de91be7560800ff87eab7ad88cb1849..1f52feb5684ee1bab710e1557cf69b43b4d4dfd4 100644
--- a/src/main/java/net/minecraft/world/item/CrossbowItem.java
+++ b/src/main/java/net/minecraft/world/item/CrossbowItem.java
@@ -80,7 +80,14 @@ public class CrossbowItem extends ProjectileWeaponItem {
     public void releaseUsing(ItemStack stack, Level world, LivingEntity user, int remainingUseTicks) {
         int i = this.getUseDuration(stack) - remainingUseTicks;
         float f = getPowerForTime(i, stack);
-        if (f >= 1.0F && !isCharged(stack) && tryLoadProjectiles(user, stack)) {
+        // Paper start
+        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
             world.playSound(
                 null,
                 user.getX(),
@@ -94,8 +101,14 @@ 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 416bdff5cda842143038180592ad231a1d19d926..d27e83c08c45b8514207f26e48ceb1a91ded94be 100644
--- a/src/main/java/net/minecraft/world/item/ProjectileWeaponItem.java
+++ b/src/main/java/net/minecraft/world/item/ProjectileWeaponItem.java
@@ -139,6 +139,11 @@ public abstract class ProjectileWeaponItem extends Item {
     }
 
     protected static List<ItemStack> draw(ItemStack weaponStack, ItemStack projectileStack, LivingEntity shooter) {
+    // Paper start
+        return draw(weaponStack, projectileStack, shooter, true);
+    }
+    protected static List<ItemStack> draw(ItemStack weaponStack, ItemStack projectileStack, LivingEntity shooter, boolean consume) {
+    // Paper end
         if (projectileStack.isEmpty()) {
             return List.of();
         } else {
@@ -148,7 +153,7 @@ public abstract class ProjectileWeaponItem extends Item {
             ItemStack itemstack2 = projectileStack.copy();
 
             for (int k = 0; k < j; ++k) {
-                list.add(ProjectileWeaponItem.useAmmo(weaponStack, k == 0 ? projectileStack : itemstack2, shooter, k > 0));
+                list.add(ProjectileWeaponItem.useAmmo(weaponStack, k == 0 ? projectileStack : itemstack2, shooter, k > 0 || !consume)); // Paper
             }
 
             return list;