copy spawner data exactly when silk touching

Author: granny

patches/server/0020-Silk-touch-spawners.patch

@@ -18,10 +18,10 @@ index f692149d91b525bda6dc79d489d7496ea24037e8..7fbd4bf29bcc0795aa4b0e6d5d4bc374
      public static final Item CRAFTING_TABLE = registerBlock(Blocks.CRAFTING_TABLE);
      public static final Item FARMLAND = registerBlock(Blocks.FARMLAND);
 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 e8b1c44da90f60cde20cda65aba2aa1e30f89d25..c55576424993236da46ed1c2ccd03b72d7ee97f9 100644
+index e8b1c44da90f60cde20cda65aba2aa1e30f89d25..1ac38424a44aa2225b9bd3fa0fbbe61b7b24875c 100644
 --- a/src/main/java/net/minecraft/world/level/block/SpawnerBlock.java
 +++ b/src/main/java/net/minecraft/world/level/block/SpawnerBlock.java
-@@ -42,6 +42,58 @@ public class SpawnerBlock extends BaseEntityBlock {
+@@ -42,6 +42,60 @@ public class SpawnerBlock extends BaseEntityBlock {
          return createTickerHelper(type, BlockEntityType.MOB_SPAWNER, world.isClientSide ? SpawnerBlockEntity::clientTick : SpawnerBlockEntity::serverTick);
      }
 
@@ -35,6 +35,9 @@ index e8b1c44da90f60cde20cda65aba2aa1e30f89d25..c55576424993236da46ed1c2ccd03b72
 +            final net.kyori.adventure.text.Component mobName = io.papermc.paper.adventure.PaperAdventure.asAdventure(entityType == null ? Component.empty() : entityType.getDescription());
 +            net.minecraft.nbt.CompoundTag display = new net.minecraft.nbt.CompoundTag();
 +            net.minecraft.nbt.CompoundTag tag = new net.minecraft.nbt.CompoundTag();
++            net.minecraft.nbt.CompoundTag blockEntityTag = blockEntity.getUpdateTag();
++            blockEntityTag.remove("Delay"); // remove this tag to allow stacking duplicate spawners
++            tag.put("BlockEntityTag", blockEntityTag);
 +
 +            String name = level.purpurConfig.silkTouchSpawnerName;
 +            if (name != null && !name.isEmpty() && !name.equals("Monster Spawner")) {
@@ -62,7 +65,6 @@ index e8b1c44da90f60cde20cda65aba2aa1e30f89d25..c55576424993236da46ed1c2ccd03b72
 +
 +            ItemStack item = new ItemStack(Blocks.SPAWNER.asItem());
 +            if (entityType != null) {
-+                tag.putString("Purpur.mob_type", entityType.getName());
 +                tag.putDouble("HideFlags", ItemStack.TooltipPart.ADDITIONAL.getMask()); // hides the "Interact with Spawn Egg" tooltip
 +                item.setTag(tag);
 +            }
@@ -80,7 +82,7 @@ index e8b1c44da90f60cde20cda65aba2aa1e30f89d25..c55576424993236da46ed1c2ccd03b72
      @Override
      public void spawnAfterBreak(BlockState state, ServerLevel world, BlockPos pos, ItemStack tool, boolean dropExperience) {
          super.spawnAfterBreak(state, world, pos, tool, dropExperience);
-@@ -50,6 +102,7 @@ public class SpawnerBlock extends BaseEntityBlock {
+@@ -50,6 +104,7 @@ public class SpawnerBlock extends BaseEntityBlock {
 
      @Override
      public int getExpDrop(BlockState iblockdata, ServerLevel worldserver, BlockPos blockposition, ItemStack itemstack, boolean flag) {
@@ -133,10 +135,10 @@ index 70f53ccb22de2c05c9ead68f8bd29d0b69d0993f..d4bca5b5f3d10c3a04befd8c365f4643
      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..c038fb2bbb0f0e78380bc24bbd6348b869669a90
+index 0000000000000000000000000000000000000000..d6cc7e434cb2bacc00e4cad9e1f4be7fcf5d0bee
 --- /dev/null
 +++ b/src/main/java/org/purpurmc/purpur/item/SpawnerItem.java
-@@ -0,0 +1,36 @@
+@@ -0,0 +1,38 @@
 +package org.purpurmc.purpur.item;
 +
 +import net.minecraft.core.BlockPos;
@@ -167,6 +169,8 @@ index 0000000000000000000000000000000000000000..c038fb2bbb0f0e78380bc24bbd6348b8
 +                if (tag.contains("Purpur.mob_type")) {
 +                    EntityType.byString(tag.getString("Purpur.mob_type")).ifPresent(type ->
 +                            ((SpawnerBlockEntity) spawner).getSpawner().setEntityId(type, level, level.random, pos));
++                } else if (tag.contains("BlockEntityTag")) {
++                    spawner.load(tag.getCompound("BlockEntityTag"));
 +                }
 +            }
 +        }