Purpur/patches/server/0146-Allow-infinity-on-crossbows.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Ben Kerllenevich <ben@omega24.dev>
Date: Thu, 18 Mar 2021 12:25:29 -0400
Subject: [PATCH] Allow infinity on crossbows


diff --git a/src/main/java/net/minecraft/world/item/CrossbowItem.java b/src/main/java/net/minecraft/world/item/CrossbowItem.java
index 06689ee8799079510a1a4e7b68029b9629e318fb..fdf9972bb9374789b063d191d9d419cca5975b23 100644
--- a/src/main/java/net/minecraft/world/item/CrossbowItem.java
+++ b/src/main/java/net/minecraft/world/item/CrossbowItem.java
@@ -114,7 +114,7 @@ public class CrossbowItem extends ProjectileWeaponItem implements Vanishable {
         // Paper end - Add EntityLoadCrossbowEvent
         int i = EnchantmentHelper.getItemEnchantmentLevel(Enchantments.MULTISHOT, crossbow);
         int j = i == 0 ? 1 : 3;
-        boolean flag = !consume || shooter instanceof Player && ((Player) shooter).getAbilities().instabuild; // Paper - Add EntityLoadCrossbowEvent
+        boolean flag = !consume || shooter instanceof Player && ((Player) shooter).getAbilities().instabuild || (org.purpurmc.purpur.PurpurConfig.allowCrossbowInfinity && EnchantmentHelper.getItemEnchantmentLevel(Enchantments.INFINITY_ARROWS, crossbow) > 0); // Paper - Add EntityLoadCrossbowEvent // Purpur
         ItemStack itemstack1 = shooter.getProjectile(crossbow);
         ItemStack itemstack2 = itemstack1.copy();
 
@@ -300,7 +300,7 @@ public class CrossbowItem extends ProjectileWeaponItem implements Vanishable {
 
         for (int i = 0; i < list.size(); ++i) {
             ItemStack itemstack1 = (ItemStack) list.get(i);
-            boolean flag = entity instanceof Player && ((Player) entity).getAbilities().instabuild;
+            boolean flag = entity instanceof Player && ((Player) entity).getAbilities().instabuild || (org.purpurmc.purpur.PurpurConfig.allowCrossbowInfinity && EnchantmentHelper.getItemEnchantmentLevel(Enchantments.INFINITY_ARROWS, stack) > 0); // Purpur
 
             if (!itemstack1.isEmpty()) {
                 if (i == 0) {
diff --git a/src/main/java/net/minecraft/world/item/enchantment/ArrowInfiniteEnchantment.java b/src/main/java/net/minecraft/world/item/enchantment/ArrowInfiniteEnchantment.java
index 2c4ce164ab3011f372ff1719c8d4a3331d8db55f..27512787b37381a5236b1b473e9ce3f06df8e2d0 100644
--- a/src/main/java/net/minecraft/world/item/enchantment/ArrowInfiniteEnchantment.java
+++ b/src/main/java/net/minecraft/world/item/enchantment/ArrowInfiniteEnchantment.java
@@ -7,6 +7,14 @@ public class ArrowInfiniteEnchantment extends Enchantment {
         super(weight, EnchantmentCategory.BOW, slotTypes);
     }
 
+    // Purpur start
+    @Override
+    public boolean canEnchant(net.minecraft.world.item.ItemStack stack) {
+        // we have to cheat the system because this class is loaded before purpur's config is loaded
+        return (org.purpurmc.purpur.PurpurConfig.allowCrossbowInfinity ? EnchantmentCategory.BOW_AND_CROSSBOW : EnchantmentCategory.BOW).canEnchant(stack.getItem());
+    }
+    // Purpur end
+
     @Override
     public int getMinCost(int level) {
         return 20;
diff --git a/src/main/java/net/minecraft/world/item/enchantment/EnchantmentCategory.java b/src/main/java/net/minecraft/world/item/enchantment/EnchantmentCategory.java
index 246516e67db0b8b197b287c067d5a0163d8bde22..859435f747ceef860cb4e9e825a7353ea3b90798 100644
--- a/src/main/java/net/minecraft/world/item/enchantment/EnchantmentCategory.java
+++ b/src/main/java/net/minecraft/world/item/enchantment/EnchantmentCategory.java
@@ -121,6 +121,14 @@ public enum EnchantmentCategory {
         public boolean canEnchant(Item item) {
             return item instanceof Vanishable || Block.byItem(item) instanceof Vanishable || BREAKABLE.canEnchant(item);
         }
+    // Purpur start
+    },
+    BOW_AND_CROSSBOW {
+        @Override
+        public boolean canEnchant(Item item) {
+            return item instanceof BowItem || item instanceof CrossbowItem;
+        }
+    // Purpur end
     };
 
     public abstract boolean canEnchant(Item item);
diff --git a/src/main/java/org/bukkit/craftbukkit/enchantments/CraftEnchantment.java b/src/main/java/org/bukkit/craftbukkit/enchantments/CraftEnchantment.java
index 92465b2a9f1483be76004c9f80a1fe15913b3b8b..37688a6908bbad7455ee2c26bba91f282859d272 100644
--- a/src/main/java/org/bukkit/craftbukkit/enchantments/CraftEnchantment.java
+++ b/src/main/java/org/bukkit/craftbukkit/enchantments/CraftEnchantment.java
@@ -80,6 +80,7 @@ public class CraftEnchantment extends Enchantment {
             case TRIDENT -> EnchantmentTarget.TRIDENT;
             case CROSSBOW -> EnchantmentTarget.CROSSBOW;
             case VANISHABLE -> EnchantmentTarget.VANISHABLE;
+            case BOW_AND_CROSSBOW -> EnchantmentTarget.BOW_AND_CROSSBOW; // Purpur
         };
     }
 
diff --git a/src/main/java/org/purpurmc/purpur/PurpurConfig.java b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
index 6714c095714c3a34464b9190be964ceaac718d45..0e254b7b1709f745a7d7c0e3cefda96d726de556 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
@@ -284,6 +284,7 @@ public class PurpurConfig {
     }
 
     public static boolean allowInfinityMending = false;
+    public static boolean allowCrossbowInfinity = false;
     private static void enchantmentSettings() {
         if (version < 5) {
             boolean oldValue = getBoolean("settings.enchantment.allow-infinite-and-mending-together", false);
@@ -291,6 +292,7 @@ public class PurpurConfig {
             set("settings.enchantment.allow-infinite-and-mending-together", null);
         }
         allowInfinityMending = getBoolean("settings.enchantment.allow-infinity-and-mending-together", allowInfinityMending);
+        allowCrossbowInfinity = getBoolean("settings.enchantment.allow-infinity-on-crossbow", allowCrossbowInfinity);
     }
 
     public static boolean endermanShortHeight = false;