0023-Silk-touch-spawners.patch

From 0000000000000000000000000000000000000000 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


diff --git a/src/main/java/net/minecraft/world/item/Items.java b/src/main/java/net/minecraft/world/item/Items.java
index 51016663829b1f36b8e752dcf9c9361282c3f06b..e0a635d647113bb363df2ddc293f2495c56e5d3c 100644
--- a/src/main/java/net/minecraft/world/item/Items.java
+++ b/src/main/java/net/minecraft/world/item/Items.java
@@ -271,7 +271,7 @@ public class Items {
     public static final Item PURPUR_BLOCK = registerBlock(Blocks.PURPUR_BLOCK, CreativeModeTab.TAB_BUILDING_BLOCKS);
     public static final Item PURPUR_PILLAR = registerBlock(Blocks.PURPUR_PILLAR, CreativeModeTab.TAB_BUILDING_BLOCKS);
     public static final Item PURPUR_STAIRS = registerBlock(Blocks.PURPUR_STAIRS, CreativeModeTab.TAB_BUILDING_BLOCKS);
-    public static final Item SPAWNER = registerBlock(new BlockItem(Blocks.SPAWNER, (new Item.Properties()).rarity(Rarity.EPIC)));
+    public static final Item SPAWNER = registerBlock(Blocks.SPAWNER, new org.purpurmc.purpur.item.SpawnerItem(Blocks.SPAWNER, new Item.Properties().rarity(Rarity.EPIC))); // Purpur
     public static final Item CHEST = registerBlock(Blocks.CHEST, CreativeModeTab.TAB_DECORATIONS);
     public static final Item CRAFTING_TABLE = registerBlock(Blocks.CRAFTING_TABLE, CreativeModeTab.TAB_DECORATIONS);
     public static final Item FARMLAND = registerBlock(Blocks.FARMLAND, CreativeModeTab.TAB_DECORATIONS);
diff --git a/src/main/java/net/minecraft/world/level/block/SpawnerBlock.java b/src/main/java/net/minecraft/world/level/block/SpawnerBlock.java
index 39bc91423c830d69eff1996881373296f322f06a..e0d8bd28576f16822a584f3514dbcb8f36e575d8 100644
--- a/src/main/java/net/minecraft/world/level/block/SpawnerBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/SpawnerBlock.java
@@ -1,9 +1,19 @@
 package net.minecraft.world.level.block;
 
 import javax.annotation.Nullable;
+
+import net.kyori.adventure.text.minimessage.MiniMessage;
 import net.minecraft.core.BlockPos;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.nbt.StringTag;
+import net.minecraft.resources.ResourceLocation;
 import net.minecraft.server.level.ServerLevel;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.enchantment.EnchantmentHelper;
+import net.minecraft.world.item.enchantment.Enchantments;
 import net.minecraft.world.level.BlockGetter;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.entity.BlockEntity;
@@ -13,6 +23,20 @@ import net.minecraft.world.level.block.entity.SpawnerBlockEntity;
 import net.minecraft.world.level.block.state.BlockBehaviour;
 import net.minecraft.world.level.block.state.BlockState;
 
+// Purpur start
+import io.papermc.paper.adventure.PaperAdventure;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.TextReplacementConfig;
+import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer;
+import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
+
+import java.util.List;
+import java.util.Locale;
+import java.util.Optional;
+
+import static net.kyori.adventure.text.format.TextDecoration.ITALIC;
+// Purpur end
+
 public class SpawnerBlock extends BaseEntityBlock {
 
     protected SpawnerBlock(BlockBehaviour.Properties settings) {
@@ -30,6 +54,55 @@ public class SpawnerBlock extends BaseEntityBlock {
         return createTickerHelper(type, BlockEntityType.MOB_SPAWNER, world.isClientSide ? SpawnerBlockEntity::clientTick : SpawnerBlockEntity::serverTick);
     }
 
+    // Purpur start
+    @Override
+    public void playerDestroy(Level level, Player player, BlockPos pos, BlockState state, BlockEntity blockEntity, ItemStack stack) {
+        if (level.purpurConfig.silkTouchEnabled && player.getBukkitEntity().hasPermission("purpur.drop.spawners") && isSilkTouch(level, stack)) {
+            Optional<EntityType<?>> type = EntityType.by(((SpawnerBlockEntity) blockEntity).getSpawner().nextSpawnData.getEntityToSpawn());
+            if (type.isPresent()) {
+                final Component mobName = PaperAdventure.asAdventure(type.get().getDescription());
+                CompoundTag display = new CompoundTag();
+                CompoundTag tag = new CompoundTag();
+
+                String name = level.purpurConfig.silkTouchSpawnerName;
+                if (name != null && !name.isEmpty() && !name.equals("Spawner")) {
+                    Component displayName = MiniMessage.miniMessage().deserialize(name, net.kyori.adventure.text.minimessage.tag.resolver.Placeholder.component("mob", mobName));
+                    if (name.startsWith("<reset>")) {
+                        displayName = displayName.decoration(ITALIC, false);
+                    }
+                    display.put("Name", StringTag.valueOf(PaperAdventure.asJsonString(displayName, Locale.ROOT)));
+                    tag.put("display", display);
+                }
+
+                List<String> lore = level.purpurConfig.silkTouchSpawnerLore;
+                if (lore != null && !lore.isEmpty()) {
+                    ListTag list = new ListTag();
+                    for (String line : lore) {
+                        Component lineComponent = MiniMessage.miniMessage().deserialize(line, net.kyori.adventure.text.minimessage.tag.resolver.Placeholder.component("mob", mobName));
+                        if (line.startsWith("<reset>")) {
+                            lineComponent = lineComponent.decoration(ITALIC, false);
+                        }
+                        list.add(StringTag.valueOf(PaperAdventure.asJsonString(lineComponent, Locale.ROOT)));
+                    }
+                    display.put("Lore", list);
+                    tag.put("display", display);
+                }
+
+                ItemStack item = new ItemStack(Blocks.SPAWNER.asItem());
+                tag.putString("Purpur.mob_type", type.get().getName());
+                item.setTag(tag);
+
+                popResource(level, pos, item);
+            }
+        }
+        super.playerDestroy(level, player, pos, state, blockEntity, stack);
+    }
+
+    private boolean isSilkTouch(Level level, ItemStack stack) {
+        return stack != null && level.purpurConfig.silkTouchTools.contains(stack.getItem()) && EnchantmentHelper.getItemEnchantmentLevel(Enchantments.SILK_TOUCH, stack) >= level.purpurConfig.minimumSilkTouchSpawnerRequire;
+    }
+    // Purpur end
+
     @Override
     public void spawnAfterBreak(BlockState state, ServerLevel world, BlockPos pos, ItemStack stack, boolean dropExperience) {
         super.spawnAfterBreak(state, world, pos, stack, dropExperience);
@@ -38,6 +111,7 @@ public class SpawnerBlock extends BaseEntityBlock {
 
     @Override
     public int getExpDrop(BlockState iblockdata, ServerLevel worldserver, BlockPos blockposition, ItemStack itemstack, boolean flag) {
+        if (isSilkTouch(worldserver, itemstack)) return 0; // Purpur
         if (flag) {
             int i = 15 + worldserver.random.nextInt(15) + worldserver.random.nextInt(15);
 
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index f6bbe6326b60de83ee79c749705edca4ce293a11..a4d4ef2e390df3b1f4d88413bd67fa78e847f35b 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -115,6 +115,38 @@ public class PurpurWorldConfig {
         playerInvulnerableWhileAcceptingResourcePack = getBoolean("gameplay-mechanics.player.invulnerable-while-accepting-resource-pack", playerInvulnerableWhileAcceptingResourcePack);
     }
 
+    public boolean silkTouchEnabled = false;
+    public String silkTouchSpawnerName = "<reset><white>Spawner";
+    public List<String> silkTouchSpawnerLore = new ArrayList<>();
+    public List<Item> silkTouchTools = new ArrayList<>();
+    public int minimumSilkTouchSpawnerRequire = 1;
+    private void silkTouchSettings() {
+        if (PurpurConfig.version < 21) {
+            String oldName = getString("gameplay-mechanics.silk-touch.spawner-name", silkTouchSpawnerName);
+            set("gameplay-mechanics.silk-touch.spawner-name", "<reset>" + ChatColor.toMM(oldName.replace("{mob}", "<mob>")));
+            List<String> list = new ArrayList<>();
+            getList("gameplay-mechanics.silk-touch.spawner-lore", List.of("Spawns a <mob>"))
+                    .forEach(line -> list.add("<reset>" + ChatColor.toMM(line.toString().replace("{mob}", "<mob>"))));
+            set("gameplay-mechanics.silk-touch.spawner-lore", list);
+        }
+        silkTouchEnabled = getBoolean("gameplay-mechanics.silk-touch.enabled", silkTouchEnabled);
+        silkTouchSpawnerName = getString("gameplay-mechanics.silk-touch.spawner-name", silkTouchSpawnerName);
+        minimumSilkTouchSpawnerRequire = getInt("gameplay-mechanics.silk-touch.minimal-level", minimumSilkTouchSpawnerRequire);
+        silkTouchSpawnerLore.clear();
+        getList("gameplay-mechanics.silk-touch.spawner-lore", List.of("Spawns a <mob>"))
+                .forEach(line -> silkTouchSpawnerLore.add(line.toString()));
+        silkTouchTools.clear();
+        getList("gameplay-mechanics.silk-touch.tools", List.of(
+            "minecraft:iron_pickaxe",
+            "minecraft:golden_pickaxe",
+            "minecraft:diamond_pickaxe",
+            "minecraft:netherite_pickaxe"
+        )).forEach(key -> {
+            Item item = Registry.ITEM.get(new ResourceLocation(key.toString()));
+            if (item != Items.AIR) silkTouchTools.add(item);
+        });
+    }
+
     public boolean babiesAreRidable = true;
     public boolean untamedTamablesAreRidable = true;
     public boolean useNightVisionWhenRiding = false;
diff --git a/src/main/java/org/purpurmc/purpur/item/SpawnerItem.java b/src/main/java/org/purpurmc/purpur/item/SpawnerItem.java
new file mode 100644
index 0000000000000000000000000000000000000000..ede5c1855e799d250ed47eabff36291a636aa729
--- /dev/null
+++ b/src/main/java/org/purpurmc/purpur/item/SpawnerItem.java
@@ -0,0 +1,36 @@
+package org.purpurmc.purpur.item;
+
+import net.minecraft.core.BlockPos;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.item.BlockItem;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.level.block.Block;
+import net.minecraft.world.level.block.entity.BlockEntity;
+import net.minecraft.world.level.block.entity.SpawnerBlockEntity;
+import net.minecraft.world.level.block.state.BlockState;
+
+public class SpawnerItem extends BlockItem {
+
+    public SpawnerItem(Block block, Properties settings) {
+        super(block, settings);
+    }
+
+    @Override
+    protected boolean updateCustomBlockEntityTag(BlockPos pos, Level level, Player player, ItemStack stack, BlockState state) {
+        boolean handled = super.updateCustomBlockEntityTag(pos, level, player, stack, state);
+        if (level.purpurConfig.silkTouchEnabled && player.getBukkitEntity().hasPermission("purpur.place.spawners")) {
+            BlockEntity spawner = level.getBlockEntity(pos);
+            if (spawner instanceof SpawnerBlockEntity && stack.hasTag()) {
+                CompoundTag tag = stack.getTag();
+                if (tag.contains("Purpur.mob_type")) {
+                    EntityType.byString(tag.getString("Purpur.mob_type")).ifPresent(type ->
+                            ((SpawnerBlockEntity) spawner).getSpawner().setEntityId(type));
+                }
+            }
+        }
+        return handled;
+    }
+}