PaperMC/patches/server/0504-add-get-set-drop-chance-to-EntityEquipment.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Thu, 22 Apr 2021 00:28:11 -0700
Subject: [PATCH] add get-set drop chance to EntityEquipment

== AT ==
public net.minecraft.world.entity.Mob getEquipmentDropChance(Lnet/minecraft/world/entity/EquipmentSlot;)F

diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftEntityEquipment.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftEntityEquipment.java
index cb704cef3845727c465fe3ea7210a11545da56c8..fdcc414f4fa246082ad0732133c870d915ae3084 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftEntityEquipment.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftEntityEquipment.java
@@ -244,15 +244,22 @@ public class CraftEntityEquipment implements EntityEquipment {
     public void setBootsDropChance(float chance) {
         this.setDropChance(net.minecraft.world.entity.EquipmentSlot.FEET, chance);
     }
+    // Paper start
+    @Override
+    public float getDropChance(EquipmentSlot slot) {
+        return getDropChance(CraftEquipmentSlot.getNMS(slot));
+    }
+
+    @Override
+    public void setDropChance(EquipmentSlot slot, float chance) {
+        setDropChance(CraftEquipmentSlot.getNMS(slot), chance);
+    }
+    // Paper end
 
     private void setDropChance(net.minecraft.world.entity.EquipmentSlot slot, float chance) {
         Preconditions.checkArgument(this.entity.getHandle() instanceof Mob, "Cannot set drop chance for non-Mob entity");
 
-        if (slot == net.minecraft.world.entity.EquipmentSlot.MAINHAND || slot == net.minecraft.world.entity.EquipmentSlot.OFFHAND) {
-            ((Mob) this.entity.getHandle()).handDropChances[slot.getIndex()] = chance;
-        } else {
-            ((Mob) this.entity.getHandle()).armorDropChances[slot.getIndex()] = chance;
-        }
+        ((Mob) this.entity.getHandle()).setDropChance(slot, chance); // Paper - use setter on Mob
     }
 
     private float getDropChance(net.minecraft.world.entity.EquipmentSlot slot) {
@@ -260,10 +267,6 @@ public class CraftEntityEquipment implements EntityEquipment {
             return 1;
         }
 
-        if (slot == net.minecraft.world.entity.EquipmentSlot.MAINHAND || slot == net.minecraft.world.entity.EquipmentSlot.OFFHAND) {
-            return ((Mob) this.entity.getHandle()).handDropChances[slot.getIndex()];
-        } else {
-            return ((Mob) this.entity.getHandle()).armorDropChances[slot.getIndex()];
-        }
+        return ((Mob) this.entity.getHandle()).getEquipmentDropChance(slot); // Paper - use getter on Mob
     }
 }
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryPlayer.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryPlayer.java
index f039c5041e783ef55e19194cb7db7610429b1d96..107fa1d4bd977d17dc062da280dda46eb3c5f81c 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftInventoryPlayer.java
@@ -353,4 +353,15 @@ public class CraftInventoryPlayer extends CraftInventory implements org.bukkit.i
     public void setBootsDropChance(float chance) {
         throw new UnsupportedOperationException("Cannot set drop chance for PlayerInventory");
     }
+    // Paper start
+    @Override
+    public float getDropChance(EquipmentSlot slot) {
+        return 1;
+    }
+
+    @Override
+    public void setDropChance(EquipmentSlot slot, float chance) {
+        throw new UnsupportedOperationException("Cannot set drop chance for PlayerInventory");
+    }
+    // Paper end
 }