AutoCrafting now respects PrepareItemCraftEvent

ChestsPlusPlusAPI/src/main/java/com/jamesdpeters/minecraft/chests/Api.java

@@ -15,7 +15,7 @@ public class Api {
         return plugin;
     }
 
-    public static NMSProvider getNMSProvider() {
+    public static NMSProvider setupNMSProvider() {
         String packageName = NMSProvider.class.getPackage().getName();
         String nmsVersion = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
         String nmsProvider = packageName + "." + nmsVersion + ".NMSProviderImpl";

ChestsPlusPlusAPI/src/main/java/com/jamesdpeters/minecraft/chests/NMSProvider.java

@@ -6,6 +6,7 @@ public interface NMSProvider {
     ChestOpener getChestOpener();
     MaterialChecker getMaterialChecker();
     CraftingProvider getCraftingProvider();
+    NPCProvider getNPCProvider();
 
     void setItemFrameVisible(ItemFrame itemFrame, boolean visible);
 }

ChestsPlusPlusAPI/src/main/java/com/jamesdpeters/minecraft/chests/NPCProvider.java

@@ -0,0 +1,7 @@
+package com.jamesdpeters.minecraft.chests;
+
+import org.bukkit.entity.HumanEntity;
+
+public interface NPCProvider {
+    HumanEntity createHumanEntity();
+}

ChestsPlusPlus_1_14/src/main/java/com/jamesdpeters/minecraft/chests/v1_14_R1/NMSProviderImpl.java

@@ -1,9 +1,6 @@
 package com.jamesdpeters.minecraft.chests.v1_14_R1;
 
-import com.jamesdpeters.minecraft.chests.ChestOpener;
+import com.jamesdpeters.minecraft.chests.*;
-import com.jamesdpeters.minecraft.chests.CraftingProvider;
-import com.jamesdpeters.minecraft.chests.MaterialChecker;
-import com.jamesdpeters.minecraft.chests.NMSProvider;
 import org.bukkit.entity.ItemFrame;
 
 public class NMSProviderImpl implements NMSProvider {
@@ -22,6 +19,11 @@ public class NMSProviderImpl implements NMSProvider {
         return new Crafting();
     }
 
+    @Override
+    public NPCProvider getNPCProvider() {
+        return new NPC();
+    }
+
     @Override
     public void setItemFrameVisible(ItemFrame itemFrame, boolean visible) {
         //Not support in 1.14

ChestsPlusPlus_1_14/src/main/java/com/jamesdpeters/minecraft/chests/v1_14_R1/NPC.java

@@ -0,0 +1,24 @@
+package com.jamesdpeters.minecraft.chests.v1_14_R1;
+
+import com.jamesdpeters.minecraft.chests.NPCProvider;
+import com.mojang.authlib.GameProfile;
+import net.minecraft.server.v1_14_R1.EntityPlayer;
+import net.minecraft.server.v1_14_R1.MinecraftServer;
+import net.minecraft.server.v1_14_R1.PlayerInteractManager;
+import net.minecraft.server.v1_14_R1.WorldServer;
+import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.v1_14_R1.CraftServer;
+import org.bukkit.craftbukkit.v1_14_R1.CraftWorld;
+import org.bukkit.entity.HumanEntity;
+
+import java.util.UUID;
+
+public class NPC implements NPCProvider {
+    public HumanEntity createHumanEntity() {
+        MinecraftServer nmsServer = ((CraftServer) Bukkit.getServer()).getServer();
+        WorldServer nmsWorld = ((CraftWorld) Bukkit.getWorlds().get(0)).getHandle();
+        GameProfile gameProfile = new GameProfile(UUID.randomUUID(), "Chests++NPC");
+        EntityPlayer npc = new EntityPlayer(nmsServer, nmsWorld, gameProfile, new PlayerInteractManager(nmsWorld));
+        return npc.getBukkitEntity();
+    }
+}

ChestsPlusPlus_1_15/src/main/java/com/jamesdpeters/minecraft/chests/v1_15_R1/NMSProviderImpl.java

@@ -1,9 +1,6 @@
 package com.jamesdpeters.minecraft.chests.v1_15_R1;
 
-import com.jamesdpeters.minecraft.chests.ChestOpener;
+import com.jamesdpeters.minecraft.chests.*;
-import com.jamesdpeters.minecraft.chests.CraftingProvider;
-import com.jamesdpeters.minecraft.chests.MaterialChecker;
-import com.jamesdpeters.minecraft.chests.NMSProvider;
 import org.bukkit.entity.ItemFrame;
 
 public class NMSProviderImpl implements NMSProvider {
@@ -22,6 +19,11 @@ public class NMSProviderImpl implements NMSProvider {
         return new Crafting();
     }
 
+    @Override
+    public NPCProvider getNPCProvider() {
+        return new NPC();
+    }
+
     @Override
     public void setItemFrameVisible(ItemFrame itemFrame, boolean visible) {
         //Not supported in 1.15

ChestsPlusPlus_1_15/src/main/java/com/jamesdpeters/minecraft/chests/v1_15_R1/NPC.java

@@ -0,0 +1,24 @@
+package com.jamesdpeters.minecraft.chests.v1_15_R1;
+
+import com.jamesdpeters.minecraft.chests.NPCProvider;
+import com.mojang.authlib.GameProfile;
+import net.minecraft.server.v1_15_R1.EntityPlayer;
+import net.minecraft.server.v1_15_R1.MinecraftServer;
+import net.minecraft.server.v1_15_R1.PlayerInteractManager;
+import net.minecraft.server.v1_15_R1.WorldServer;
+import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.v1_15_R1.CraftServer;
+import org.bukkit.craftbukkit.v1_15_R1.CraftWorld;
+import org.bukkit.entity.HumanEntity;
+
+import java.util.UUID;
+
+public class NPC implements NPCProvider {
+    public HumanEntity createHumanEntity() {
+        MinecraftServer nmsServer = ((CraftServer) Bukkit.getServer()).getServer();
+        WorldServer nmsWorld = ((CraftWorld) Bukkit.getWorlds().get(0)).getHandle();
+        GameProfile gameProfile = new GameProfile(UUID.randomUUID(), "Chests++NPC");
+        EntityPlayer npc = new EntityPlayer(nmsServer, nmsWorld, gameProfile, new PlayerInteractManager(nmsWorld));
+        return npc.getBukkitEntity();
+    }
+}

ChestsPlusPlus_1_16/src/main/java/com/jamesdpeters/minecraft/chests/v1_16_R1/NMSProviderImpl.java

@@ -1,9 +1,7 @@
 package com.jamesdpeters.minecraft.chests.v1_16_R1;
 
-import com.jamesdpeters.minecraft.chests.ChestOpener;
+import com.jamesdpeters.minecraft.chests.*;
-import com.jamesdpeters.minecraft.chests.CraftingProvider;
+import com.jamesdpeters.minecraft.chests.v1_14_R1.NPC;
-import com.jamesdpeters.minecraft.chests.MaterialChecker;
-import com.jamesdpeters.minecraft.chests.NMSProvider;
 import org.bukkit.block.Lidded;
 import org.bukkit.entity.ItemFrame;
 
@@ -35,6 +33,11 @@ public class NMSProviderImpl implements NMSProvider {
         return new Crafting();
     }
 
+    @Override
+    public NPCProvider getNPCProvider() {
+        return new NPC();
+    }
+
     @Override
     public void setItemFrameVisible(ItemFrame itemFrame, boolean visible) {
         itemFrame.setVisible(visible);

ChestsPlusPlus_1_16/src/main/java/com/jamesdpeters/minecraft/chests/v1_16_R1/NPC.java

@@ -0,0 +1,24 @@
+package com.jamesdpeters.minecraft.chests.v1_16_R1;
+
+import com.jamesdpeters.minecraft.chests.NPCProvider;
+import com.mojang.authlib.GameProfile;
+import net.minecraft.server.v1_16_R1.EntityPlayer;
+import net.minecraft.server.v1_16_R1.MinecraftServer;
+import net.minecraft.server.v1_16_R1.PlayerInteractManager;
+import net.minecraft.server.v1_16_R1.WorldServer;
+import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.v1_16_R1.CraftServer;
+import org.bukkit.craftbukkit.v1_16_R1.CraftWorld;
+import org.bukkit.entity.HumanEntity;
+
+import java.util.UUID;
+
+public class NPC implements NPCProvider {
+    public HumanEntity createHumanEntity() {
+        MinecraftServer nmsServer = ((CraftServer) Bukkit.getServer()).getServer();
+        WorldServer nmsWorld = ((CraftWorld) Bukkit.getWorlds().get(0)).getHandle();
+        GameProfile gameProfile = new GameProfile(UUID.randomUUID(), "Chests++NPC");
+        EntityPlayer npc = new EntityPlayer(nmsServer, nmsWorld, gameProfile, new PlayerInteractManager(nmsWorld));
+        return npc.getBukkitEntity();
+    }
+}

ChestsPlusPlus_1_16_R2/src/main/java/com/jamesdpeters/minecraft/chests/v1_16_R2/NMSProviderImpl.java

@@ -1,9 +1,7 @@
 package com.jamesdpeters.minecraft.chests.v1_16_R2;
 
-import com.jamesdpeters.minecraft.chests.ChestOpener;
+import com.jamesdpeters.minecraft.chests.*;
-import com.jamesdpeters.minecraft.chests.CraftingProvider;
+import com.jamesdpeters.minecraft.chests.v1_15_R1.NPC;
-import com.jamesdpeters.minecraft.chests.MaterialChecker;
-import com.jamesdpeters.minecraft.chests.NMSProvider;
 import org.bukkit.block.Lidded;
 import org.bukkit.entity.ItemFrame;
 
@@ -35,6 +33,11 @@ public class NMSProviderImpl implements NMSProvider {
         return new Crafting();
     }
 
+    @Override
+    public NPCProvider getNPCProvider() {
+        return new NPC();
+    }
+
     @Override
     public void setItemFrameVisible(ItemFrame itemFrame, boolean visible) {
         itemFrame.setVisible(visible);

ChestsPlusPlus_1_16_R2/src/main/java/com/jamesdpeters/minecraft/chests/v1_16_R2/NPC.java

@@ -0,0 +1,24 @@
+package com.jamesdpeters.minecraft.chests.v1_16_R2;
+
+import com.jamesdpeters.minecraft.chests.NPCProvider;
+import com.mojang.authlib.GameProfile;
+import net.minecraft.server.v1_16_R2.EntityPlayer;
+import net.minecraft.server.v1_16_R2.MinecraftServer;
+import net.minecraft.server.v1_16_R2.PlayerInteractManager;
+import net.minecraft.server.v1_16_R2.WorldServer;
+import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.v1_16_R2.CraftServer;
+import org.bukkit.craftbukkit.v1_16_R2.CraftWorld;
+import org.bukkit.entity.HumanEntity;
+
+import java.util.UUID;
+
+public class NPC implements NPCProvider {
+    public HumanEntity createHumanEntity() {
+        MinecraftServer nmsServer = ((CraftServer) Bukkit.getServer()).getServer();
+        WorldServer nmsWorld = ((CraftWorld) Bukkit.getWorlds().get(0)).getHandle();
+        GameProfile gameProfile = new GameProfile(UUID.randomUUID(), "Chests++NPC");
+        EntityPlayer npc = new EntityPlayer(nmsServer, nmsWorld, gameProfile, new PlayerInteractManager(nmsWorld));
+        return npc.getBukkitEntity();
+    }
+}

ChestsPlusPlus_1_16_R3/src/main/java/com/jamesdpeters/minecraft/chests/v1_16_R3/NMSProviderImpl.java

@@ -1,9 +1,6 @@
 package com.jamesdpeters.minecraft.chests.v1_16_R3;
 
-import com.jamesdpeters.minecraft.chests.ChestOpener;
+import com.jamesdpeters.minecraft.chests.*;
-import com.jamesdpeters.minecraft.chests.CraftingProvider;
-import com.jamesdpeters.minecraft.chests.MaterialChecker;
-import com.jamesdpeters.minecraft.chests.NMSProvider;
 import org.bukkit.block.Lidded;
 import org.bukkit.entity.ItemFrame;
 
@@ -35,6 +32,11 @@ public class NMSProviderImpl implements NMSProvider {
         return new Crafting();
     }
 
+    @Override
+    public NPCProvider getNPCProvider() {
+        return new NPC();
+    }
+
     @Override
     public void setItemFrameVisible(ItemFrame itemFrame, boolean visible) {
         itemFrame.setVisible(visible);

ChestsPlusPlus_1_16_R3/src/main/java/com/jamesdpeters/minecraft/chests/v1_16_R3/NPC.java

@@ -0,0 +1,24 @@
+package com.jamesdpeters.minecraft.chests.v1_16_R3;
+
+import com.jamesdpeters.minecraft.chests.NPCProvider;
+import com.mojang.authlib.GameProfile;
+import net.minecraft.server.v1_16_R3.EntityPlayer;
+import net.minecraft.server.v1_16_R3.MinecraftServer;
+import net.minecraft.server.v1_16_R3.PlayerInteractManager;
+import net.minecraft.server.v1_16_R3.WorldServer;
+import org.bukkit.Bukkit;
+import org.bukkit.craftbukkit.v1_16_R3.CraftServer;
+import org.bukkit.craftbukkit.v1_16_R3.CraftWorld;
+import org.bukkit.entity.HumanEntity;
+
+import java.util.UUID;
+
+public class NPC implements NPCProvider {
+    public HumanEntity createHumanEntity() {
+        MinecraftServer nmsServer = ((CraftServer) Bukkit.getServer()).getServer();
+        WorldServer nmsWorld = ((CraftWorld) Bukkit.getWorlds().get(0)).getHandle();
+        GameProfile gameProfile = new GameProfile(UUID.randomUUID(), "Chests++NPC");
+        EntityPlayer npc = new EntityPlayer(nmsServer, nmsWorld, gameProfile, new PlayerInteractManager(nmsWorld));
+        return npc.getBukkitEntity();
+    }
+}

ChestsPlusPlus_Main/src/main/java/com/jamesdpeters/minecraft/chests/api/ApiSpecific.java

@@ -14,7 +14,7 @@ public class ApiSpecific {
     private static NMSProvider nmsProvider;
 
     public static void init() {
-        nmsProvider = Api.getNMSProvider();
+        nmsProvider = Api.setupNMSProvider();
         if (nmsProvider == null) nmsProvider = new NMSProviderDefault();
         materialChecker = nmsProvider.getMaterialChecker();
         chestOpener = nmsProvider.getChestOpener();

ChestsPlusPlus_Main/src/main/java/com/jamesdpeters/minecraft/chests/api/NMSProviderDefault.java

@@ -1,9 +1,6 @@
 package com.jamesdpeters.minecraft.chests.api;
 
-import com.jamesdpeters.minecraft.chests.ChestOpener;
+import com.jamesdpeters.minecraft.chests.*;
-import com.jamesdpeters.minecraft.chests.CraftingProvider;
-import com.jamesdpeters.minecraft.chests.MaterialChecker;
-import com.jamesdpeters.minecraft.chests.NMSProvider;
 import com.jamesdpeters.minecraft.chests.v1_16_R1.NMSProviderImpl;
 import org.bukkit.entity.ItemFrame;
 
@@ -34,6 +31,11 @@ public class NMSProviderDefault implements NMSProvider {
         return null;
     }
 
+    @Override
+    public NPCProvider getNPCProvider() {
+        return null;
+    }
+
     @Override
     public void setItemFrameVisible(ItemFrame itemFrame, boolean visible) {
         //Not supported in Bukkit api 1.14.

ChestsPlusPlus_Main/src/main/java/com/jamesdpeters/minecraft/chests/interfaces/CraftingInventoryImpl.java

@@ -0,0 +1,230 @@
+package com.jamesdpeters.minecraft.chests.interfaces;
+
+import org.bukkit.Location;
+import org.bukkit.Material;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.event.inventory.InventoryType;
+import org.bukkit.inventory.*;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.ListIterator;
+
+public class CraftingInventoryImpl implements CraftingInventory {
+
+    Inventory inventory;
+    ItemStack result;
+    ItemStack[] matrix;
+    Recipe recipe;
+
+    public CraftingInventoryImpl(Inventory inventory, ItemStack result, List<ItemStack> matrix, Recipe recipe) {
+        this.inventory = inventory;
+        this.result = result;
+        this.matrix = matrix.toArray(new ItemStack[0]);
+        this.recipe = recipe;
+    }
+
+    @Nullable
+    @Override
+    public ItemStack getResult() {
+        return result;
+    }
+
+    @NotNull
+    @Override
+    public ItemStack[] getMatrix() {
+        return matrix;
+    }
+
+    @Override
+    public void setResult(@Nullable ItemStack newResult) {
+        result = newResult;
+    }
+
+    @Override
+    public void setMatrix(@NotNull ItemStack[] contents) {
+        matrix = contents;
+    }
+
+    @Nullable
+    @Override
+    public Recipe getRecipe() {
+        return recipe;
+    }
+
+
+    // INVENTORY METHODS
+
+    @Override
+    public int getSize() {
+        return inventory.getSize();
+    }
+
+    @Override
+    public int getMaxStackSize() {
+        return inventory.getMaxStackSize();
+    }
+
+    @Override
+    public void setMaxStackSize(int size) {
+        inventory.setMaxStackSize(size);
+    }
+
+    @Nullable
+    @Override
+    public ItemStack getItem(int index) {
+        return inventory.getItem(index);
+    }
+
+    @Override
+    public void setItem(int index, @Nullable ItemStack item) {
+        inventory.setItem(index, item);
+    }
+
+    @NotNull
+    @Override
+    public HashMap<Integer, ItemStack> addItem(@NotNull ItemStack... items)
+            throws IllegalArgumentException {
+        return inventory.addItem(items);
+    }
+
+    @NotNull
+    @Override
+    public HashMap<Integer, ItemStack> removeItem(@NotNull ItemStack... items)
+            throws IllegalArgumentException {
+        return inventory.removeItem(items);
+    }
+
+    @NotNull
+    @Override
+    public ItemStack[] getContents() {
+        return inventory.getContents();
+    }
+
+    @Override
+    public void setContents(@NotNull ItemStack[] items) throws IllegalArgumentException {
+        inventory.setContents(items);
+    }
+
+    @NotNull
+    @Override
+    public ItemStack[] getStorageContents() {
+        return inventory.getStorageContents();
+    }
+
+    @Override
+    public void setStorageContents(@NotNull ItemStack[] items) throws IllegalArgumentException {
+        inventory.setStorageContents(items);
+    }
+
+    @Override
+    public boolean contains(@NotNull Material material) throws IllegalArgumentException {
+        return inventory.contains(material);
+    }
+
+    @Override
+    public boolean contains(@Nullable ItemStack item) {
+        return inventory.contains(item);
+    }
+
+    @Override
+    public boolean contains(@NotNull Material material, int amount) throws IllegalArgumentException {
+        return inventory.contains(material, amount);
+    }
+
+    @Override
+    public boolean contains(@Nullable ItemStack item, int amount) {
+        return inventory.contains(item, amount);
+    }
+
+    @Override
+    public boolean containsAtLeast(@Nullable ItemStack item, int amount) {
+        return inventory.containsAtLeast(item, amount);
+    }
+
+    @NotNull
+    @Override
+    public HashMap<Integer, ? extends ItemStack> all(@NotNull Material material)
+            throws IllegalArgumentException {
+        return inventory.all(material);
+    }
+
+    @NotNull
+    @Override
+    public HashMap<Integer, ? extends ItemStack> all(@Nullable ItemStack item) {
+        return inventory.all(item);
+    }
+
+    @Override
+    public int first(@NotNull Material material) throws IllegalArgumentException {
+        return inventory.first(material);
+    }
+
+    @Override
+    public int first(@NotNull ItemStack item) {
+        return inventory.first(item);
+    }
+
+    @Override
+    public int firstEmpty() {
+        return inventory.firstEmpty();
+    }
+
+    @Override
+    public void remove(@NotNull Material material) throws IllegalArgumentException {
+        inventory.remove(material);
+    }
+
+    @Override
+    public void remove(@NotNull ItemStack item) {
+        inventory.remove(item);
+    }
+
+    @Override
+    public void clear(int index) {
+        inventory.clear(index);
+    }
+
+    @Override
+    public void clear() {
+        inventory.clear();
+    }
+
+    @NotNull
+    @Override
+    public List<HumanEntity> getViewers() {
+        return inventory.getViewers();
+    }
+
+    @NotNull
+    @Override
+    public InventoryType getType() {
+        return inventory.getType();
+    }
+
+    @Nullable
+    @Override
+    public InventoryHolder getHolder() {
+        return inventory.getHolder();
+    }
+
+    @NotNull
+    @Override
+    public ListIterator<ItemStack> iterator() {
+        return inventory.iterator();
+    }
+
+    @NotNull
+    @Override
+    public ListIterator<ItemStack> iterator(int index) {
+        return inventory.iterator(index);
+    }
+
+    @Nullable
+    @Override
+    public Location getLocation() {
+        return inventory.getLocation();
+    }
+}

ChestsPlusPlus_Main/src/main/java/com/jamesdpeters/minecraft/chests/interfaces/InventoryViewImpl.java

@@ -0,0 +1,49 @@
+package com.jamesdpeters.minecraft.chests.interfaces;
+
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.event.inventory.InventoryType;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.InventoryView;
+import org.jetbrains.annotations.NotNull;
+
+public class InventoryViewImpl extends InventoryView {
+
+    Inventory top, bottom;
+    HumanEntity humanEntity;
+
+    public InventoryViewImpl(Inventory top, Inventory bottom, HumanEntity humanEntity){
+        this.top = top;
+        this.bottom = bottom;
+        this.humanEntity = humanEntity;
+    }
+
+    @NotNull
+    @Override
+    public Inventory getTopInventory() {
+        return top;
+    }
+
+    @NotNull
+    @Override
+    public Inventory getBottomInventory() {
+        return bottom;
+    }
+
+    @NotNull
+    @Override
+    public HumanEntity getPlayer() {
+        return humanEntity;
+    }
+
+    @NotNull
+    @Override
+    public InventoryType getType() {
+        return InventoryType.WORKBENCH;
+    }
+
+    @NotNull
+    @Override
+    public String getTitle() {
+        return "ChestsPlusPlusInventoryView";
+    }
+}

ChestsPlusPlus_Main/src/main/java/com/jamesdpeters/minecraft/chests/interfaces/VirtualCraftingHolder.java

@@ -8,11 +8,6 @@ import com.jamesdpeters.minecraft.chests.serialize.Config;
 import com.jamesdpeters.minecraft.chests.serialize.LocationInfo;
 import com.jamesdpeters.minecraft.chests.storage.autocraft.AutoCraftingStorage;
 import com.jamesdpeters.minecraft.chests.storage.chestlink.ChestLinkStorage;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.List;
-import java.util.stream.Collectors;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.Sound;
@@ -22,16 +17,17 @@ import org.bukkit.block.Container;
 import org.bukkit.block.Hopper;
 import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.InventoryType;
-import org.bukkit.inventory.Inventory;
+import org.bukkit.event.inventory.PrepareItemCraftEvent;
-import org.bukkit.inventory.InventoryHolder;
+import org.bukkit.inventory.*;
-import org.bukkit.inventory.ItemStack;
-import org.bukkit.inventory.Recipe;
-import org.bukkit.inventory.RecipeChoice;
-import org.bukkit.inventory.ShapedRecipe;
-import org.bukkit.inventory.ShapelessRecipe;
 import org.bukkit.scheduler.BukkitRunnable;
 import org.bukkit.scheduler.BukkitTask;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.stream.Collectors;
+
 public class VirtualCraftingHolder implements InventoryHolder {
 
     private final Inventory inventory;
@@ -261,7 +257,7 @@ public class VirtualCraftingHolder implements InventoryHolder {
             Utils.addIfNotNull(inventories, getInventory(block.getRelative(BlockFace.SOUTH)));
             Utils.addIfNotNull(inventories, getInventory(block.getRelative(BlockFace.WEST)));
 
-            boolean didCraft = craftItem(inventories, output);
+            boolean didCraft = craftItem(inventories, output, getInventory());
 
             //Play sound if crafting occured.
             if (didCraft) {
@@ -387,7 +383,7 @@ public class VirtualCraftingHolder implements InventoryHolder {
         return null;
     }
 
-    private boolean craftItem(List<Inventory> inputs, Inventory output) {
+    private boolean craftItem(List<Inventory> inputs, Inventory output, Inventory craftingInventory) {
         boolean sameInv = false;
         Inventory sameInventory = null;
 
@@ -413,10 +409,18 @@ public class VirtualCraftingHolder implements InventoryHolder {
         // Use NMS to get the real result considering meta data etc.
         ItemStack realResult = Crafting.craft(recipe);
 
+        Recipe recipeActual = Crafting.getRecipe(recipe);
+        CraftingInventoryImpl craftingInventoryImpl = new CraftingInventoryImpl(craftingInventory, realResult, recipe, recipeActual);
+        InventoryViewImpl inventoryView = new InventoryViewImpl(craftingInventory, output, ApiSpecific.getNmsProvider().getNPCProvider().createHumanEntity());
+        PrepareItemCraftEvent itemCraftEvent = new PrepareItemCraftEvent(craftingInventoryImpl, inventoryView, false);
+        Bukkit.getPluginManager().callEvent(itemCraftEvent);
+
+        if (craftingInventoryImpl.result == null) return false;
+
         //If we reach here there are enough materials so check for space in the Hopper and update inventory.
         //Check if output and input are the same inventory to avoid duplication.
         Inventory tempOutput = sameInv ? sameInventory : Utils.copyInventory(output);
-        HashMap<Integer, ItemStack> map = tempOutput.addItem(realResult);
+        HashMap<Integer, ItemStack> map = tempOutput.addItem(craftingInventoryImpl.result);
 
         //If result fits into output copy over the temporary inventories.
         if (map.isEmpty()) {

ChestsPlusPlus_Main/src/main/java/com/jamesdpeters/minecraft/chests/listeners/InventoryListener.java

@@ -6,15 +6,12 @@ import com.jamesdpeters.minecraft.chests.interfaces.VirtualInventoryHolder;
 import com.jamesdpeters.minecraft.chests.misc.Utils;
 import com.jamesdpeters.minecraft.chests.sort.InventorySorter;
 import org.bukkit.Bukkit;
+import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
-import org.bukkit.event.inventory.InventoryAction;
+import org.bukkit.event.inventory.*;
-import org.bukkit.event.inventory.InventoryClickEvent;
-import org.bukkit.event.inventory.InventoryCloseEvent;
-import org.bukkit.event.inventory.InventoryDragEvent;
-import org.bukkit.event.inventory.InventoryInteractEvent;
 import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.InventoryHolder;
 import org.bukkit.inventory.ItemStack;
@@ -122,5 +119,13 @@ public class InventoryListener implements Listener {
         }
     }
 
+    @EventHandler
+    public void craftEvent(PrepareItemCraftEvent event){
+        if (event.getRecipe() == null) return;
+        if (event.getRecipe().getResult().getType() == Material.DIAMOND_BLOCK){
+            event.getInventory().setResult(null);
+        }
+    }
+
 
 }