001    package net.minecraft.src;
002    
003    public class ShapedRecipes implements IRecipe
004    {
005        /** How many horizontal slots this recipe is wide. */
006        private int recipeWidth;
007    
008        /** How many vertical slots this recipe uses. */
009        private int recipeHeight;
010    
011        /** Is a array of ItemStack that composes the recipe. */
012        private ItemStack[] recipeItems;
013    
014        /** Is the ItemStack that you get when craft the recipe. */
015        private ItemStack recipeOutput;
016    
017        /** Is the itemID of the output item that you get when craft the recipe. */
018        public final int recipeOutputItemID;
019    
020        public ShapedRecipes(int par1, int par2, ItemStack[] par3ArrayOfItemStack, ItemStack par4ItemStack)
021        {
022            this.recipeOutputItemID = par4ItemStack.itemID;
023            this.recipeWidth = par1;
024            this.recipeHeight = par2;
025            this.recipeItems = par3ArrayOfItemStack;
026            this.recipeOutput = par4ItemStack;
027        }
028    
029        public ItemStack getRecipeOutput()
030        {
031            return this.recipeOutput;
032        }
033    
034        /**
035         * Used to check if a recipe matches current crafting inventory
036         */
037        public boolean matches(InventoryCrafting par1InventoryCrafting)
038        {
039            for (int var2 = 0; var2 <= 3 - this.recipeWidth; ++var2)
040            {
041                for (int var3 = 0; var3 <= 3 - this.recipeHeight; ++var3)
042                {
043                    if (this.checkMatch(par1InventoryCrafting, var2, var3, true))
044                    {
045                        return true;
046                    }
047    
048                    if (this.checkMatch(par1InventoryCrafting, var2, var3, false))
049                    {
050                        return true;
051                    }
052                }
053            }
054    
055            return false;
056        }
057    
058        /**
059         * Checks if the region of a crafting inventory is match for the recipe.
060         */
061        private boolean checkMatch(InventoryCrafting par1InventoryCrafting, int par2, int par3, boolean par4)
062        {
063            for (int var5 = 0; var5 < 3; ++var5)
064            {
065                for (int var6 = 0; var6 < 3; ++var6)
066                {
067                    int var7 = var5 - par2;
068                    int var8 = var6 - par3;
069                    ItemStack var9 = null;
070    
071                    if (var7 >= 0 && var8 >= 0 && var7 < this.recipeWidth && var8 < this.recipeHeight)
072                    {
073                        if (par4)
074                        {
075                            var9 = this.recipeItems[this.recipeWidth - var7 - 1 + var8 * this.recipeWidth];
076                        }
077                        else
078                        {
079                            var9 = this.recipeItems[var7 + var8 * this.recipeWidth];
080                        }
081                    }
082    
083                    ItemStack var10 = par1InventoryCrafting.getStackInRowAndColumn(var5, var6);
084    
085                    if (var10 != null || var9 != null)
086                    {
087                        if (var10 == null && var9 != null || var10 != null && var9 == null)
088                        {
089                            return false;
090                        }
091    
092                        if (var9.itemID != var10.itemID)
093                        {
094                            return false;
095                        }
096    
097                        if (var9.getItemDamage() != -1 && var9.getItemDamage() != var10.getItemDamage())
098                        {
099                            return false;
100                        }
101                    }
102                }
103            }
104    
105            return true;
106        }
107    
108        /**
109         * Returns an Item that is the result of this recipe
110         */
111        public ItemStack getCraftingResult(InventoryCrafting par1InventoryCrafting)
112        {
113            return new ItemStack(this.recipeOutput.itemID, this.recipeOutput.stackSize, this.recipeOutput.getItemDamage());
114        }
115    
116        /**
117         * Returns the size of the recipe area
118         */
119        public int getRecipeSize()
120        {
121            return this.recipeWidth * this.recipeHeight;
122        }
123    }