From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Tue, 24 Aug 2021 16:48:35 -0500
Subject: [PATCH] Shift right click to use exp for mending


diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
index add6aa626273fef9cbd4662f83bea6f79312d1da..ccf7491c67b76186b2140f319fca69c9e0cecf92 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -522,6 +522,7 @@ public class ServerPlayerGameMode {
     public InteractionHand interactHand;
     public ItemStack interactItemStack;
     public InteractionResult useItemOn(ServerPlayer player, Level world, ItemStack stack, InteractionHand hand, BlockHitResult hitResult) {
+        if (shiftClickMended(stack)) return InteractionResult.SUCCESS; // Purpur
         BlockPos blockposition = hitResult.getBlockPos();
         BlockState iblockdata = world.getBlockState(blockposition);
         InteractionResult enuminteractionresult = InteractionResult.PASS;
@@ -615,4 +616,18 @@ public class ServerPlayerGameMode {
     public void setLevel(ServerLevel world) {
         this.level = world;
     }
+
+    // Purpur start
+    public boolean shiftClickMended(ItemStack itemstack) {
+        if (this.player.level.purpurConfig.shiftRightClickRepairsMendingPoints > 0 && this.player.isShiftKeyDown()) {
+            int points = Math.min(this.player.totalExperience, this.player.level.purpurConfig.shiftRightClickRepairsMendingPoints);
+            if (points > 0 && itemstack.isDamaged() && net.minecraft.world.item.enchantment.EnchantmentHelper.getItemEnchantmentLevel(net.minecraft.world.item.enchantment.Enchantments.MENDING, itemstack) > 0) {
+                this.player.giveExperiencePoints(-points);
+                this.player.level.addFreshEntity(new net.minecraft.world.entity.ExperienceOrb(this.player.level, this.player.getX(), this.player.getY(), this.player.getZ(), points, org.bukkit.entity.ExperienceOrb.SpawnReason.UNKNOWN, this.player, this.player));
+                return true;
+            }
+        }
+        return false;
+    }
+    // Purpur end
 }
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index a196c669891b09c42751004bd76d9c40ed6924ee..0a3bb5c385a3d7d4e938fe45c295faf031d2d5bf 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -1875,6 +1875,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
 
             boolean cancelled;
             if (movingobjectposition == null || movingobjectposition.getType() != HitResult.Type.BLOCK) {
+                if (this.player.gameMode.shiftClickMended(itemstack)) return; // Purpur
                 org.bukkit.event.player.PlayerInteractEvent event = CraftEventFactory.callPlayerInteractEvent(this.player, Action.RIGHT_CLICK_AIR, itemstack, enumhand);
                 cancelled = event.useItemInHand() == Event.Result.DENY;
             } else {
diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
index ca4bc68542c96b93f3aa410b21248af8e136d911..b3be28a08fb4296e43db47737bbd3379f1798599 100644
--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
@@ -360,6 +360,7 @@ public class PurpurWorldConfig {
     public boolean playerArmorSwappingCreativeMakesCopy = true;
     public boolean playerRidableInWater = false;
     public boolean playerRemoveBindingWithWeakness = false;
+    public int shiftRightClickRepairsMendingPoints = 0;
     private void playerSettings() {
         if (PurpurConfig.version < 19) {
             boolean oldVal = getBoolean("gameplay-mechanics.player.idle-timeout.mods-target", idleTimeoutTargetPlayer);
@@ -387,6 +388,7 @@ public class PurpurWorldConfig {
         playerArmorSwappingCreativeMakesCopy = getBoolean("gameplay-mechanics.player.armor-click-equip.creative-makes-copy", playerArmorSwappingCreativeMakesCopy);
         playerRidableInWater = getBoolean("gameplay-mechanics.player.ridable-in-water", playerRidableInWater);
         playerRemoveBindingWithWeakness = getBoolean("gameplay-mechanics.player.curse-of-binding.remove-with-weakness", playerRemoveBindingWithWeakness);
+        shiftRightClickRepairsMendingPoints = getInt("gameplay-mechanics.player.shift-right-click-repairs-mending-points", shiftRightClickRepairsMendingPoints);
     }
 
     public int snowballDamage = -1;