Purpur/patches/server/0008-Silk-touch-spawners.patch

From 37fc918ff51a18259c863ec7b2185c7e5e70b996 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Thu, 9 May 2019 14:27:37 -0500
Subject: [PATCH] Silk touch spawners

---
 src/main/java/net/minecraft/server/Block.java |  1 +
 .../net/minecraft/server/BlockMobSpawner.java | 35 +++++++++++++++++++
 .../net/minecraft/server/EntityTypes.java     | 14 ++++++++
 .../net/minecraft/server/ItemSpawner.java     | 23 ++++++++++++
 src/main/java/net/minecraft/server/Items.java |  2 +-
 5 files changed, 74 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/net/minecraft/server/ItemSpawner.java

diff --git a/src/main/java/net/minecraft/server/Block.java b/src/main/java/net/minecraft/server/Block.java
index 54a61283e6..4d29faccaa 100644
--- a/src/main/java/net/minecraft/server/Block.java
+++ b/src/main/java/net/minecraft/server/Block.java
@@ -494,6 +494,7 @@ public class Block implements IMaterial {
         iblockdata.dropNaturally(world, blockposition, itemstack);
     }
 
+    public static void dropItem(World world, BlockPosition blockposition, ItemStack itemstack) { a(world, blockposition, itemstack); } // Purpur - OBFHELPER
     public static void a(World world, BlockPosition blockposition, ItemStack itemstack) {
         if (!world.isClientSide && !itemstack.isEmpty() && world.getGameRules().getBoolean(GameRules.DO_TILE_DROPS)) {
             float f = 0.5F;
diff --git a/src/main/java/net/minecraft/server/BlockMobSpawner.java b/src/main/java/net/minecraft/server/BlockMobSpawner.java
index 5296fdf168..901d45f284 100644
--- a/src/main/java/net/minecraft/server/BlockMobSpawner.java
+++ b/src/main/java/net/minecraft/server/BlockMobSpawner.java
@@ -11,6 +11,40 @@ public class BlockMobSpawner extends BlockTileEntity {
         return new TileEntityMobSpawner();
     }
 
+    // Purpur start
+    @Override
+    public void a(World world, EntityHuman entityhuman, BlockPosition blockposition, IBlockData iblockdata, TileEntity tileentity, ItemStack itemstack) {
+        if (entityhuman.getBukkitEntity().hasPermission("purpur.drop.spawners") && isSilkTouch(itemstack)) {
+            MinecraftKey type = ((TileEntityMobSpawner) tileentity).getSpawner().getMobName();
+            if (type != null) {
+                ItemStack item = new ItemStack(Blocks.SPAWNER.getItem());
+
+                String mobName = EntityTypes.getFromKey(type).getTranslatedName();
+                ChatComponentText text = new ChatComponentText("Spawns a " + mobName);
+
+                NBTTagList lore = new NBTTagList();
+                lore.add(NBTTagString.a(IChatBaseComponent.ChatSerializer.a(text)));
+
+                NBTTagCompound display = new NBTTagCompound();
+                display.set("Lore", lore);
+
+                NBTTagCompound tag = new NBTTagCompound();
+                tag.set("display", display);
+                tag.setString("Purpur.mob_type", type.toString());
+
+                item.setTag(tag);
+
+                dropItem(world, blockposition, item);
+            }
+        }
+        super.a(world, entityhuman, blockposition, iblockdata, tileentity, itemstack);
+    }
+
+    private boolean isSilkTouch(ItemStack itemstack) {
+        return itemstack != null && itemstack.getItem() == Items.DIAMOND_PICKAXE && EnchantmentManager.getEnchantmentLevel(Enchantments.SILK_TOUCH, itemstack) > 0;
+    }
+    // Purpur end
+
     @Override
     public void dropNaturally(IBlockData iblockdata, World world, BlockPosition blockposition, ItemStack itemstack) {
         super.dropNaturally(iblockdata, world, blockposition, itemstack);
@@ -23,6 +57,7 @@ public class BlockMobSpawner extends BlockTileEntity {
 
     @Override
     public int getExpDrop(IBlockData iblockdata, World world, BlockPosition blockposition, ItemStack itemstack) {
+        if (isSilkTouch(itemstack)) return 0; // Purpur
         int i = 15 + world.random.nextInt(15) + world.random.nextInt(15);
 
         return i;
diff --git a/src/main/java/net/minecraft/server/EntityTypes.java b/src/main/java/net/minecraft/server/EntityTypes.java
index 2fb04e3e93..dcba6d6c89 100644
--- a/src/main/java/net/minecraft/server/EntityTypes.java
+++ b/src/main/java/net/minecraft/server/EntityTypes.java
@@ -136,10 +136,17 @@ public class EntityTypes<T extends Entity> {
         return (EntityTypes) IRegistry.a((IRegistry) IRegistry.ENTITY_TYPE, s, (Object) entitytypes_a.a(s));
     }
 
+    // Purpur start
+    public static EntityTypes getFromKey(MinecraftKey key) {
+        return IRegistry.ENTITY_TYPE.get(key);
+    }
+    // Purpur end
+
     public static MinecraftKey getName(EntityTypes<?> entitytypes) {
         return IRegistry.ENTITY_TYPE.getKey(entitytypes);
     }
 
+    public static Optional<EntityTypes<?>> getType(String name) { return a(name); } // Purpur - OBFHELPER
     public static Optional<EntityTypes<?>> a(String s) {
         return IRegistry.ENTITY_TYPE.getOptional(MinecraftKey.a(s));
     }
@@ -259,6 +266,12 @@ public class EntityTypes<T extends Entity> {
         return this.bb;
     }
 
+    // Purpur start
+    public String getTranslatedName() {
+        return getNameComponent().getString();
+    }
+    // Purpur end
+
     public String f() {
         if (this.bg == null) {
             this.bg = SystemUtils.a("entity", IRegistry.ENTITY_TYPE.getKey(this));
@@ -267,6 +280,7 @@ public class EntityTypes<T extends Entity> {
         return this.bg;
     }
 
+    public IChatBaseComponent getNameComponent() { return g(); } // Purpur - OBFHELPER
     public IChatBaseComponent g() {
         if (this.bh == null) {
             this.bh = new ChatMessage(this.f(), new Object[0]);
diff --git a/src/main/java/net/minecraft/server/ItemSpawner.java b/src/main/java/net/minecraft/server/ItemSpawner.java
new file mode 100644
index 0000000000..7dc68ffe92
--- /dev/null
+++ b/src/main/java/net/minecraft/server/ItemSpawner.java
@@ -0,0 +1,23 @@
+package net.minecraft.server;
+
+public class ItemSpawner extends ItemBlock {
+    public ItemSpawner(Block block, Info info) {
+        super(block, info);
+    }
+
+    @Override
+    protected boolean a(BlockPosition blockposition, World world, EntityHuman entityhuman, ItemStack itemstack, IBlockData iblockdata) {
+        boolean handled = super.a(blockposition, world, entityhuman, itemstack, iblockdata);
+        if (entityhuman.getBukkitEntity().hasPermission("purpur.place.spawners")) {
+            TileEntity spawner = world.getTileEntity(blockposition);
+            if (spawner instanceof TileEntityMobSpawner && itemstack.hasTag()) {
+                NBTTagCompound tag = itemstack.getTag();
+                if (tag.hasKey("Purpur.mob_type")) {
+                    EntityTypes.getType(tag.getString("Purpur.mob_type")).ifPresent(type ->
+                            ((TileEntityMobSpawner) spawner).getSpawner().setMobName(type));
+                }
+            }
+        }
+        return handled;
+    }
+}
diff --git a/src/main/java/net/minecraft/server/Items.java b/src/main/java/net/minecraft/server/Items.java
index 54670f64cf..282fbca4fc 100644
--- a/src/main/java/net/minecraft/server/Items.java
+++ b/src/main/java/net/minecraft/server/Items.java
@@ -155,7 +155,7 @@ public class Items {
     public static final Item bU = a(Blocks.PURPUR_BLOCK, CreativeModeTab.b);
     public static final Item bV = a(Blocks.PURPUR_PILLAR, CreativeModeTab.b);
     public static final Item bW = a(Blocks.PURPUR_STAIRS, CreativeModeTab.b);
-    public static final Item bX = a(Blocks.SPAWNER);
+    public static final Item bX = a(Blocks.SPAWNER, new ItemSpawner(Blocks.SPAWNER, new Item.Info().a(EnumItemRarity.EPIC))); // Purpur
     public static final Item bY = a(Blocks.OAK_STAIRS, CreativeModeTab.b);
     public static final Item bZ = a(Blocks.CHEST, CreativeModeTab.c);
     public static final Item ca = a(Blocks.DIAMOND_ORE, CreativeModeTab.b);
-- 
2.24.0.rc1