Paper/patches/server/0161-Add-PlayerArmorChangeEvent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: pkt77 <parkerkt77@gmail.com>
Date: Fri, 10 Nov 2017 23:46:34 -0500
Subject: [PATCH] Add PlayerArmorChangeEvent


diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index 39c69fa6d164b1bcad97a9410953c8998e415d3c..b2dc7a83d475c0fcdaec8d1e11bf5bdaac39acdf 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -1,5 +1,6 @@
 package net.minecraft.world.entity;
 
+import com.destroystokyo.paper.event.player.PlayerArmorChangeEvent; // Paper
 import com.google.common.base.Objects;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
@@ -3016,6 +3017,13 @@ public abstract class LivingEntity extends Entity implements Attackable {
             ItemStack itemstack1 = this.getItemBySlot(enumitemslot);
 
             if (this.equipmentHasChanged(itemstack, itemstack1)) {
+                // Paper start - PlayerArmorChangeEvent
+                if (this instanceof ServerPlayer && enumitemslot.getType() == EquipmentSlot.Type.ARMOR) {
+                    final org.bukkit.inventory.ItemStack oldItem = CraftItemStack.asBukkitCopy(itemstack);
+                    final org.bukkit.inventory.ItemStack newItem = CraftItemStack.asBukkitCopy(itemstack1);
+                    new PlayerArmorChangeEvent((Player) this.getBukkitEntity(), PlayerArmorChangeEvent.SlotType.valueOf(enumitemslot.name()), oldItem, newItem).callEvent();
+                }
+                // Paper end
                 if (map == null) {
                     map = Maps.newEnumMap(EquipmentSlot.class);
                 }
diff --git a/src/test/java/io/papermc/paper/inventory/item/ExtraArmorSlotTypeMaterialTest.java b/src/test/java/io/papermc/paper/inventory/item/ExtraArmorSlotTypeMaterialTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..36cde1a68b0fb388cca40399fcb4297b4d799262
--- /dev/null
+++ b/src/test/java/io/papermc/paper/inventory/item/ExtraArmorSlotTypeMaterialTest.java
@@ -0,0 +1,53 @@
+package io.papermc.paper.inventory.item;
+
+import com.destroystokyo.paper.event.player.PlayerArmorChangeEvent;
+import java.util.ArrayList;
+import java.util.List;
+import net.minecraft.world.entity.EquipmentSlot;
+import net.minecraft.world.item.Equipable;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import org.bukkit.Material;
+import org.bukkit.craftbukkit.util.CraftMagicNumbers;
+import org.bukkit.support.AbstractTestingBase;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+@RunWith(Parameterized.class)
+public class ExtraArmorSlotTypeMaterialTest extends AbstractTestingBase {
+
+    @Parameterized.Parameter(0)
+    public PlayerArmorChangeEvent.SlotType slotType;
+
+    @Parameterized.Parameter(1)
+    public Material item;
+
+    @Parameterized.Parameters(name = "{0}: {1}")
+    public static Iterable<Object[]> parameters() {
+        final List<Object[]> parameters = new ArrayList<>();
+        for (final PlayerArmorChangeEvent.SlotType slotType : PlayerArmorChangeEvent.SlotType.values()) {
+            for (final Material item : slotType.getTypes()) {
+                parameters.add(new Object[]{ slotType, item });
+            }
+        }
+        return parameters;
+    }
+
+    @Test
+    public void test() {
+        final Item nmsItem = CraftMagicNumbers.getItem(this.item);
+        final Equipable equipable = Equipable.get(new ItemStack(nmsItem));
+        assertNotNull(this.item + " isn't equipable", equipable);
+        final EquipmentSlot slot = switch (this.slotType) {
+            case HEAD -> EquipmentSlot.HEAD;
+            case CHEST -> EquipmentSlot.CHEST;
+            case LEGS -> EquipmentSlot.LEGS;
+            case FEET -> EquipmentSlot.FEET;
+        };
+        assertEquals(this.item + " isn't set to the right slot", equipable.getEquipmentSlot(), slot);
+    }
+}
diff --git a/src/test/java/io/papermc/paper/inventory/item/MissingArmorSlotTypeMaterialTest.java b/src/test/java/io/papermc/paper/inventory/item/MissingArmorSlotTypeMaterialTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..f05cfe2e4a9f876a7e6425c612a56f86d5ac3915
--- /dev/null
+++ b/src/test/java/io/papermc/paper/inventory/item/MissingArmorSlotTypeMaterialTest.java
@@ -0,0 +1,57 @@
+package io.papermc.paper.inventory.item;
+
+import com.destroystokyo.paper.event.player.PlayerArmorChangeEvent;
+import java.util.ArrayList;
+import java.util.List;
+import net.minecraft.core.registries.BuiltInRegistries;
+import net.minecraft.world.entity.EquipmentSlot;
+import net.minecraft.world.item.Equipable;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import org.bukkit.craftbukkit.util.CraftMagicNumbers;
+import org.bukkit.support.AbstractTestingBase;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Test for {@link com.destroystokyo.paper.event.player.PlayerArmorChangeEvent.SlotType}
+ */
+@RunWith(Parameterized.class)
+public class MissingArmorSlotTypeMaterialTest extends AbstractTestingBase {
+
+    @Parameterized.Parameter(0)
+    public Equipable equipable;
+
+    @Parameterized.Parameter(1)
+    public Item item;
+
+    @Parameterized.Parameters(name = "{1}")
+    public static Iterable<Object[]> parameters() {
+        final List<Object[]> parameters = new ArrayList<>();
+        for (final Item item : BuiltInRegistries.ITEM) {
+            final Equipable equipable = Equipable.get(new ItemStack(item));
+            if (equipable != null) {
+                parameters.add(new Object[]{ equipable, item });
+            }
+        }
+        return parameters;
+    }
+
+    @Test
+    public void test() {
+        final EquipmentSlot equipmentSlot = this.equipable.getEquipmentSlot();
+        PlayerArmorChangeEvent.SlotType slotType = switch (equipmentSlot) {
+            case HEAD -> PlayerArmorChangeEvent.SlotType.HEAD;
+            case CHEST -> PlayerArmorChangeEvent.SlotType.CHEST;
+            case LEGS -> PlayerArmorChangeEvent.SlotType.LEGS;
+            case FEET -> PlayerArmorChangeEvent.SlotType.FEET;
+            default -> null;
+        };
+        if (slotType != null) {
+            assertTrue("SlotType " + slotType + " doesn't include " + this.item, slotType.getTypes().contains(CraftMagicNumbers.getMaterial(this.item)));
+        }
+    }
+}