001    package net.minecraftforge.oredict;
002    
003    import java.util.ArrayList;
004    import java.util.HashMap;
005    import java.util.Map;
006    import java.util.Map.Entry;
007    
008    import net.minecraft.block.Block;
009    import net.minecraft.item.crafting.IRecipe;
010    import net.minecraft.inventory.InventoryCrafting;
011    import net.minecraft.item.Item;
012    import net.minecraft.item.ItemStack;
013    import net.minecraft.item.crafting.ShapedRecipes;
014    import net.minecraft.world.World;
015    
016    public class ShapedOreRecipe implements IRecipe 
017    {
018        //Added in for future ease of change, but hard coded for now.
019        private static final int MAX_CRAFT_GRID_WIDTH = 3;
020        private static final int MAX_CRAFT_GRID_HEIGHT = 3;
021        
022        private ItemStack output = null;
023        private Object[] input = null;
024        private int width = 0;
025        private int height = 0;
026        private boolean mirrored = true;
027    
028        public ShapedOreRecipe(Block     result, Object... recipe){ this(new ItemStack(result), recipe); }
029        public ShapedOreRecipe(Item      result, Object... recipe){ this(new ItemStack(result), recipe); }
030        public ShapedOreRecipe(ItemStack result, Object... recipe)
031        {
032            output = result.copy();
033    
034            String shape = "";
035            int idx = 0;
036    
037            if (recipe[idx] instanceof Boolean)
038            {
039                mirrored = (Boolean)recipe[idx];
040                if (recipe[idx+1] instanceof Object[])
041                {
042                    recipe = (Object[])recipe[idx+1];
043                }
044                else
045                {
046                    idx = 1;
047                }
048            }
049    
050            if (recipe[idx] instanceof String[])
051            {
052                String[] parts = ((String[])recipe[idx++]);
053    
054                for (String s : parts)
055                {
056                    width = s.length();
057                    shape += s;
058                }
059                
060                height = parts.length;
061            }
062            else
063            {
064                while (recipe[idx] instanceof String)
065                {
066                    String s = (String)recipe[idx++];
067                    shape += s;
068                    width = s.length();
069                    height++;
070                }
071            }
072    
073            if (width * height != shape.length())
074            {
075                String ret = "Invalid shaped ore recipe: ";
076                for (Object tmp :  recipe)
077                {
078                    ret += tmp + ", ";
079                }
080                ret += output;
081                throw new RuntimeException(ret);
082            }
083    
084            HashMap<Character, Object> itemMap = new HashMap<Character, Object>();
085    
086            for (; idx < recipe.length; idx += 2)
087            {
088                Character chr = (Character)recipe[idx];
089                Object in = recipe[idx + 1];
090    
091                if (in instanceof ItemStack)
092                {
093                    itemMap.put(chr, ((ItemStack)in).copy());
094                }
095                else if (in instanceof Item)
096                {
097                    itemMap.put(chr, new ItemStack((Item)in));
098                }
099                else if (in instanceof Block)
100                {
101                    itemMap.put(chr, new ItemStack((Block)in, 1, -1));
102                }
103                else if (in instanceof String)
104                {
105                    itemMap.put(chr, OreDictionary.getOres((String)in));
106                }
107                else
108                {
109                    String ret = "Invalid shaped ore recipe: ";
110                    for (Object tmp :  recipe)
111                    {
112                        ret += tmp + ", ";
113                    }
114                    ret += output;
115                    throw new RuntimeException(ret);
116                }
117            }
118    
119            input = new Object[width * height];
120            int x = 0;
121            for (char chr : shape.toCharArray())
122            {
123                input[x++] = itemMap.get(chr);   
124            }
125        }
126    
127        ShapedOreRecipe(ShapedRecipes recipe, Map<ItemStack, String> replacements)
128        {
129            output = recipe.getRecipeOutput();
130            width = recipe.recipeWidth;
131            height = recipe.recipeHeight;
132    
133            input = new Object[recipe.recipeItems.length];
134    
135            for(int i = 0; i < input.length; i++)
136            {
137                ItemStack ingred = recipe.recipeItems[i];
138    
139                if(ingred == null) continue;
140    
141                input[i] = recipe.recipeItems[i];
142    
143                for(Entry<ItemStack, String> replace : replacements.entrySet())
144                {
145                    if(OreDictionary.itemMatches(replace.getKey(), ingred, true))
146                    {
147                        input[i] = OreDictionary.getOres(replace.getValue());
148                        break;
149                    }
150                }
151            }
152        }
153    
154        @Override
155        public ItemStack getCraftingResult(InventoryCrafting var1){ return output.copy(); }
156    
157        @Override
158        public int getRecipeSize(){ return input.length; }
159    
160        @Override
161        public ItemStack getRecipeOutput(){ return output; }
162    
163        @Override
164        public boolean matches(InventoryCrafting inv, World world)
165        {        
166            for (int x = 0; x <= MAX_CRAFT_GRID_WIDTH - width; x++)
167            {
168                for (int y = 0; y <= MAX_CRAFT_GRID_HEIGHT - height; ++y)
169                {
170                    if (checkMatch(inv, x, y, true))
171                    {
172                        return true;
173                    }
174        
175                    if (mirrored && checkMatch(inv, x, y, false))
176                    {
177                        return true;
178                    }
179                }
180            }
181        
182            return false;
183        }
184        
185        private boolean checkMatch(InventoryCrafting inv, int startX, int startY, boolean mirror)
186        {
187            for (int x = 0; x < MAX_CRAFT_GRID_WIDTH; x++)
188            {
189                for (int y = 0; y < MAX_CRAFT_GRID_HEIGHT; y++)
190                {
191                    int subX = x - startX;
192                    int subY = y - startY;
193                    Object target = null;
194    
195                    if (subX >= 0 && subY >= 0 && subX < width && subY < height)
196                    {
197                        if (mirror)
198                        {
199                            target = input[width - subX - 1 + subY * width];
200                        }
201                        else
202                        {
203                            target = input[subX + subY * width];
204                        }
205                    }
206    
207                    ItemStack slot = inv.getStackInRowAndColumn(x, y);
208                    
209                    if (target instanceof ItemStack)
210                    {
211                        if (!checkItemEquals((ItemStack)target, slot))
212                        {
213                            return false;
214                        }
215                    }
216                    else if (target instanceof ArrayList)
217                    {
218                        boolean matched = false;
219                        
220                        for (ItemStack item : (ArrayList<ItemStack>)target)
221                        {
222                            matched = matched || checkItemEquals(item, slot);
223                        }
224                        
225                        if (!matched)
226                        {
227                            return false;
228                        }
229                    }
230                    else if (target == null && slot != null)
231                    {
232                        return false;
233                    }
234                }
235            }
236    
237            return true;
238        }
239    
240        private boolean checkItemEquals(ItemStack target, ItemStack input)
241        {
242            if (input == null && target != null || input != null && target == null)
243            {
244                return false;
245            }
246            return (target.itemID == input.itemID && (target.getItemDamage() == -1 || target.getItemDamage() == input.getItemDamage()));
247        }
248    
249        public ShapedOreRecipe setMirrored(boolean mirror)
250        {
251            mirrored = mirror;
252            return this;
253        }
254    }