WoodBlockRecipe.java

package com.jaquadro.minecraft.gardentrees.core.recipe;

import com.jaquadro.minecraft.gardencore.api.WoodRegistry;
import com.jaquadro.minecraft.gardencore.util.UniqueMetaIdentifier;
import com.jaquadro.minecraft.gardentrees.block.tile.TileEntityWoodProxy;
import com.jaquadro.minecraft.gardentrees.core.ModBlocks;
import net.minecraft.block.Block;
import net.minecraft.inventory.InventoryCrafting;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.IRecipe;
import net.minecraft.world.World;

public class WoodBlockRecipe implements IRecipe
{
    private UniqueMetaIdentifier woodType;

    public WoodBlockRecipe (UniqueMetaIdentifier uid) {
        woodType = uid;
    }

    @Override
    public boolean matches (InventoryCrafting inventory, World world) {
        return getCraftingResult(inventory) != null;
    }

    @Override
    public ItemStack getCraftingResult (InventoryCrafting inventory) {
        int size = getGridSize(inventory);
        for (int row = 0; row < size - 1; row++) {
            for (int col = 0; col < size - 1; col++) {
                ItemStack wood1 = inventory.getStackInRowAndColumn(col, row);
                ItemStack wood2 = inventory.getStackInRowAndColumn(col, row + 1);
                ItemStack wood3 = inventory.getStackInRowAndColumn(col + 1, row);
                ItemStack wood4 = inventory.getStackInRowAndColumn(col + 1, row + 1);
                if (wood1 == null || wood2 == null || wood3 == null || wood4 == null)
                    continue;
                if (!wood1.isItemEqual(wood2) || !wood1.isItemEqual(wood3) || !wood1.isItemEqual(wood4))
                    continue;
                if (Block.getBlockFromItem(wood1.getItem()) != ModBlocks.thinLog)
                    continue;

                Block woodBlock = TileEntityWoodProxy.getBlockFromComposedMetadata(wood1.getItemDamage());
                int woodMeta = TileEntityWoodProxy.getMetaFromComposedMetadata(wood1.getItemDamage());

                if (!WoodRegistry.instance().contains(woodBlock, woodMeta))
                    continue;

                if (woodBlock == woodType.getBlock() && woodMeta == woodType.meta)
                    return new ItemStack(woodBlock, 1, woodMeta);
            }
        }

        return null;
    }

    @Override
    public int getRecipeSize () {
        return 4;
    }

    @Override
    public ItemStack getRecipeOutput () {
        return new ItemStack(woodType.getBlock(), 1, woodType.meta);
    }

    private int getGridSize (InventoryCrafting inventory) {
        return (int)Math.sqrt(inventory.getSizeInventory());
    }
}