#1450: Add CrafterCraftEvent

By: ploppyperson <nathat890@outlook.com>
Also-by: md_5 <git@md-5.net>

paper-server/nms-patches/net/minecraft/world/item/crafting/IRecipeComplex.patch

@@ -1,18 +1,22 @@
 --- a/net/minecraft/world/item/crafting/IRecipeComplex.java
 +++ b/net/minecraft/world/item/crafting/IRecipeComplex.java
-@@ -3,6 +3,11 @@
+@@ -3,6 +3,15 @@
  import net.minecraft.core.HolderLookup;
  import net.minecraft.world.item.ItemStack;
  
 +// CraftBukkit start
++import net.minecraft.core.IRegistryCustom;
 +import org.bukkit.NamespacedKey;
++import org.bukkit.craftbukkit.inventory.CraftComplexRecipe;
++import org.bukkit.craftbukkit.inventory.CraftItemStack;
++import org.bukkit.craftbukkit.inventory.CraftRecipe;
 +import org.bukkit.inventory.Recipe;
 +// CraftBukkit end
 +
  public abstract class IRecipeComplex implements RecipeCrafting {
  
      private final CraftingBookCategory category;
-@@ -25,4 +30,11 @@
+@@ -25,4 +34,17 @@
      public CraftingBookCategory category() {
          return this.category;
      }
@@ -20,7 +24,13 @@
 +    // CraftBukkit start
 +    @Override
 +    public Recipe toBukkitRecipe(NamespacedKey id) {
-+        return new org.bukkit.craftbukkit.inventory.CraftComplexRecipe(id, this);
++        CraftItemStack result = CraftItemStack.asCraftMirror(getResultItem(IRegistryCustom.EMPTY));
++
++        CraftComplexRecipe recipe = new CraftComplexRecipe(id, result, this);
++        recipe.setGroup(this.getGroup());
++        recipe.setCategory(CraftRecipe.getCategory(this.category()));
++
++        return recipe;
 +    }
 +    // CraftBukkit end
  }

paper-server/nms-patches/net/minecraft/world/level/block/CrafterBlock.patch

@@ -1,12 +1,14 @@
 --- a/net/minecraft/world/level/block/CrafterBlock.java
 +++ b/net/minecraft/world/level/block/CrafterBlock.java
-@@ -39,6 +39,13 @@
+@@ -39,6 +39,15 @@
  import net.minecraft.world.phys.MovingObjectPositionBlock;
  import net.minecraft.world.phys.Vec3D;
  
 +// CraftBukkit start
 +import net.minecraft.world.InventoryLargeChest;
++import org.bukkit.craftbukkit.event.CraftEventFactory;
 +import org.bukkit.craftbukkit.inventory.CraftItemStack;
++import org.bukkit.event.block.CrafterCraftEvent;
 +import org.bukkit.event.inventory.InventoryMoveItemEvent;
 +import org.bukkit.inventory.Inventory;
 +// CraftBukkit end
@@ -14,7 +16,21 @@
  public class CrafterBlock extends BlockTileEntity {
  
      public static final MapCodec<CrafterBlock> CODEC = simpleCodec(CrafterBlock::new);
-@@ -226,7 +233,25 @@
+@@ -188,6 +197,13 @@
+                 RecipeHolder<RecipeCrafting> recipeholder = (RecipeHolder) optional.get();
+                 ItemStack itemstack = ((RecipeCrafting) recipeholder.value()).assemble(craftinginput, worldserver.registryAccess());
+ 
++                // CraftBukkit start
++                CrafterCraftEvent event = CraftEventFactory.callCrafterCraftEvent(blockposition, worldserver, crafterblockentity, itemstack, recipeholder);
++                if (event.isCancelled()) {
++                    return;
++                }
++                itemstack = CraftItemStack.asNMSCopy(event.getResult());
++                // CraftBukkit end
+                 if (itemstack.isEmpty()) {
+                     worldserver.levelEvent(1050, blockposition, 0);
+                 } else {
+@@ -226,7 +242,25 @@
          ItemStack itemstack1 = itemstack.copy();
  
          if (iinventory != null && (iinventory instanceof CrafterBlockEntity || itemstack.getCount() > iinventory.getMaxStackSize(itemstack))) {
@@ -40,7 +56,7 @@
                  ItemStack itemstack2 = itemstack1.copyWithCount(1);
                  ItemStack itemstack3 = TileEntityHopper.addItem(crafterblockentity, iinventory, itemstack2, enumdirection.getOpposite());
  
-@@ -237,7 +262,25 @@
+@@ -237,7 +271,25 @@
                  itemstack1.shrink(1);
              }
          } else if (iinventory != null) {

paper-server/src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java

@@ -61,6 +61,8 @@ import net.minecraft.world.inventory.RecipeBookType;
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.item.Items;
 import net.minecraft.world.item.context.ItemActionContext;
+import net.minecraft.world.item.crafting.RecipeCrafting;
+import net.minecraft.world.item.crafting.RecipeHolder;
 import net.minecraft.world.level.ChunkCoordIntPair;
 import net.minecraft.world.level.Explosion;
 import net.minecraft.world.level.GeneratorAccess;
@@ -156,6 +158,7 @@ import org.bukkit.event.block.BlockPlaceEvent;
 import org.bukkit.event.block.BlockRedstoneEvent;
 import org.bukkit.event.block.BlockShearEntityEvent;
 import org.bukkit.event.block.BlockSpreadEvent;
+import org.bukkit.event.block.CrafterCraftEvent;
 import org.bukkit.event.block.EntityBlockFormEvent;
 import org.bukkit.event.block.FluidLevelChangeEvent;
 import org.bukkit.event.block.MoistureChangeEvent;
@@ -256,6 +259,7 @@ import org.bukkit.event.weather.LightningStrikeEvent;
 import org.bukkit.event.world.EntitiesLoadEvent;
 import org.bukkit.event.world.EntitiesUnloadEvent;
 import org.bukkit.event.world.LootGenerateEvent;
+import org.bukkit.inventory.CraftingRecipe;
 import org.bukkit.inventory.EquipmentSlot;
 import org.bukkit.inventory.InventoryView;
 import org.bukkit.inventory.Recipe;
@@ -1286,6 +1290,16 @@ public class CraftEventFactory {
         return CraftItemStack.asNMSCopy(bitem);
     }
 
+    public static CrafterCraftEvent callCrafterCraftEvent(BlockPosition pos, World world, InventoryCrafting inventoryCrafting, ItemStack result, RecipeHolder<RecipeCrafting> holder) {
+        CraftBlock block = CraftBlock.at(world, pos);
+        CraftItemStack itemStack = CraftItemStack.asCraftMirror(result);
+        CraftingRecipe craftingRecipe = (CraftingRecipe) holder.toBukkitRecipe();
+
+        CrafterCraftEvent crafterCraftEvent = new CrafterCraftEvent(block, craftingRecipe, itemStack);
+        Bukkit.getPluginManager().callEvent(crafterCraftEvent);
+        return crafterCraftEvent;
+    }
+
     public static ProjectileLaunchEvent callProjectileLaunchEvent(Entity entity) {
         Projectile bukkitEntity = (Projectile) entity.getBukkitEntity();
         ProjectileLaunchEvent event = new ProjectileLaunchEvent(bukkitEntity);

paper-server/src/main/java/org/bukkit/craftbukkit/inventory/CraftComplexRecipe.java

@@ -1,36 +1,25 @@
 package org.bukkit.craftbukkit.inventory;
 
-import net.minecraft.core.IRegistryCustom;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.world.item.crafting.IRecipeComplex;
 import net.minecraft.world.item.crafting.RecipeHolder;
 import org.bukkit.NamespacedKey;
 import org.bukkit.craftbukkit.util.CraftNamespacedKey;
 import org.bukkit.inventory.ComplexRecipe;
+import org.bukkit.inventory.CraftingRecipe;
 import org.bukkit.inventory.ItemStack;
 
-public class CraftComplexRecipe implements CraftRecipe, ComplexRecipe {
+public class CraftComplexRecipe extends CraftingRecipe implements CraftRecipe, ComplexRecipe {
 
-    private final NamespacedKey key;
     private final IRecipeComplex recipe;
 
-    public CraftComplexRecipe(NamespacedKey key, IRecipeComplex recipe) {
-        this.key = key;
+    public CraftComplexRecipe(NamespacedKey key, ItemStack result, IRecipeComplex recipe) {
+        super(key, result);
         this.recipe = recipe;
     }
 
-    @Override
-    public ItemStack getResult() {
-        return CraftItemStack.asCraftMirror(recipe.getResultItem(IRegistryCustom.EMPTY));
-    }
-
-    @Override
-    public NamespacedKey getKey() {
-        return key;
-    }
-
     @Override
     public void addToCraftingManager() {
-        MinecraftServer.getServer().getRecipeManager().addRecipe(new RecipeHolder<>(CraftNamespacedKey.toMinecraft(key), recipe));
+        MinecraftServer.getServer().getRecipeManager().addRecipe(new RecipeHolder<>(CraftNamespacedKey.toMinecraft(this.getKey()), recipe));
     }
 }