From 1bf86fb2eea33af84ad747deb174a2b3a14e0305 Mon Sep 17 00:00:00 2001
From: toastedtruth <brammero@gmail.com>
Date: Sun, 1 Dec 2013 23:18:16 +0000
Subject: [PATCH] Fix some recipe book bugs

Fix written books crashing the server. Fixes BUKKIT-4945
Fix BlockCanBuildEvent returning null. Fixes BUKKIT-4972

Due to obfuscation changes in 1.7.2, "l" is now the Material ID.
i j and k became the x y z coordinates, resulting in no ID being matched
for the Material.

This is corrected by swapping the values into the correct order.

diff --git a/src/main/java/net/minecraft/server/RecipeBookClone.java b/src/main/java/net/minecraft/server/RecipeBookClone.java
new file mode 100644
index 0000000..8182a5f
--- /dev/null
+++ b/src/main/java/net/minecraft/server/RecipeBookClone.java
@@ -0,0 +1,68 @@
+package net.minecraft.server;
+
+public class RecipeBookClone extends ShapelessRecipes implements IRecipe { // CraftBukkit - added extends
+
+    // CraftBukkit start - Delegate to new parent class
+    public RecipeBookClone() {
+        super(new ItemStack(Items.WRITTEN_BOOK, 0, -1), java.util.Arrays.asList(new ItemStack(Items.BOOK_AND_QUILL, 0, 0)));
+    }
+    // CraftBukkit end
+
+    public boolean a(InventoryCrafting inventoryCrafting, World paramWorld) {
+        int i = 0;
+        ItemStack itemStack = null;
+        for (int j = 0; j < inventoryCrafting.getSize(); j++) {
+            ItemStack itemStack1 = inventoryCrafting.getItem(j);
+            if (itemStack1 != null) {
+                if (itemStack1.getItem() == Items.WRITTEN_BOOK) {
+                    if (itemStack != null) {
+                        return false;
+                    }
+                    itemStack = itemStack1;
+                } else if (itemStack1.getItem() == Items.BOOK_AND_QUILL) {
+                    i++;
+                } else {
+                    return false;
+                }
+            }
+        }
+        return (itemStack != null) && (i > 0);
+    }
+
+    public ItemStack a(InventoryCrafting inventoryCrafting) {
+        int i = 0;
+        ItemStack itemStack = null;
+        for (int j = 0; j < inventoryCrafting.getSize(); j++) {
+            ItemStack itemStack2 = inventoryCrafting.getItem(j);
+            if (itemStack2 != null) {
+                if (itemStack2.getItem() == Items.WRITTEN_BOOK) {
+                    if (itemStack != null) {
+                        return null;
+                    }
+                    itemStack = itemStack2;
+                } else if (itemStack2.getItem() == Items.BOOK_AND_QUILL) {
+                    i++;
+                } else {
+                    return null;
+                }
+            }
+        }
+        if ((itemStack == null) || (i < 1)) {
+            return null;
+        }
+        ItemStack itemStack1 = new ItemStack(Items.WRITTEN_BOOK, i + 1);
+        itemStack1.setTag((NBTTagCompound) itemStack.getTag().clone());
+        if (itemStack.hasName()) {
+            itemStack1.c(itemStack.getName());
+        }
+        return itemStack1;
+    }
+
+    public int a() {
+        return 9;
+    }
+
+    public ItemStack b() {
+        return null;
+    }
+}
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 81534e3..858004e 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -2483,7 +2483,7 @@ public abstract class World implements IBlockAccess {
         boolean defaultReturn = axisalignedbb != null && !this.a(axisalignedbb, entity) ? false : (block1.getMaterial() == Material.ORIENTABLE && block == Blocks.ANVIL ? true : block1.getMaterial().isReplaceable() && block.canPlace(this, i, j, k, l, itemstack));
 
         // CraftBukkit start
-        BlockCanBuildEvent event = new BlockCanBuildEvent(this.getWorld().getBlockAt(j, k, l), i, defaultReturn);
+        BlockCanBuildEvent event = new BlockCanBuildEvent(this.getWorld().getBlockAt(i, j, k), l, defaultReturn);
         this.getServer().getPluginManager().callEvent(event);
 
         return event.isBuildable();
-- 
1.8.3.2