[1.8] [Solved] Autocrafting Table not crafting item

Posted July 13, 201510 yr

I have made an autocrafting table (quite different from Buildcraft's), but the problem is, it always crafts item stacks with a stack size of 0. I don't want to give away too much of the code, but here's the tile entity:

package com.earthcomputer.farmersheaven;

import java.lang.reflect.Field;

import net.minecraft.entity.item.EntityItem;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.IInventory;
import net.minecraft.inventory.ISidedInventory;
import net.minecraft.inventory.InventoryCrafting;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.CraftingManager;
import net.minecraft.item.crafting.IRecipe;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.server.gui.IUpdatePlayerListBox;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.ChatComponentText;
import net.minecraft.util.ChatComponentTranslation;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.IChatComponent;
import net.minecraftforge.common.util.Constants;

public class TileEntityAutoCraftingTable extends TileEntity implements IUpdatePlayerListBox, ISidedInventory
{

private Container			container		= new Container() {
												@Override
												public boolean canInteractWith(EntityPlayer player)
												{
													return true;
												}

												@Override
												public void onCraftMatrixChanged(IInventory inventory)
												{
													//changeOutput();
												}
											};

private InventoryCrafting	invCrafting		= new InventoryCrafting(container, 3, 3);
private ItemStack			result;
private IRecipe				currentRecipe;
private boolean				canContinue		= true;
private int					craftTime		= 0;
public static final int		MAX_CRAFT_TIME	= 200;

private String				customName;

private static final Field	invCraftingStackList;

static
{
	try
	{
		invCraftingStackList = InventoryCrafting.class.getDeclaredField("stackList");
	}
	catch (Exception e)
	{
		throw new RuntimeException(e);
	}
	invCraftingStackList.setAccessible(true);
}

@Override
public String getName()
{
	return hasCustomName() ? customName : "container.autocrafting_table";
}

@Override
public boolean hasCustomName()
{
	return customName != null && customName.length() > 0;
}

@Override
public IChatComponent getDisplayName()
{
	return hasCustomName() ? new ChatComponentText(getName()) : new ChatComponentTranslation(getName());
}

@Override
public int getSizeInventory()
{
	return 10;
}

@Override
public ItemStack getStackInSlot(int index)
{
	return index == 9 ? result : invCrafting.getStackInSlot(index);
}

private void setStackInSlot(int index, ItemStack stack)
{
	if(index == 9)
		result = stack;
	else try
	{
		ItemStack before = getStackInSlot(index);
		((ItemStack[]) invCraftingStackList.get(invCrafting))[index] = stack;
		if(!ItemStack.areItemsEqual(before, stack) || !ItemStack.areItemStackTagsEqual(before, stack))
			changeOutput();
	}
	catch (Exception e)
	{
		throw new RuntimeException(e);
	}
}

@Override
public ItemStack decrStackSize(int index, int count)
{
	if(getStackInSlot(index) != null)
	{
		ItemStack stack;

		if(getStackInSlot(index).stackSize <= count)
		{
			stack = getStackInSlot(index);
			setStackInSlot(index, null);
			return stack;
		}
		else
		{
			stack = getStackInSlot(index).splitStack(count);

			if(getStackInSlot(index).stackSize == 0)
			{
				setStackInSlot(index, null);
			}

			return stack;
		}
	}
	else
	{
		return null;
	}
}

@Override
public ItemStack getStackInSlotOnClosing(int index)
{
	if(getStackInSlot(index) != null)
	{
		ItemStack itemstack = getStackInSlot(index);
		setStackInSlot(index, null);
		return itemstack;
	}
	else
	{
		return null;
	}
}

@Override
public void setInventorySlotContents(int index, ItemStack stack)
{
	boolean sameStackInSlot = stack != null && stack.isItemEqual(getStackInSlot(index))
		&& ItemStack.areItemStackTagsEqual(stack, getStackInSlot(index));
	setStackInSlot(index, stack);

	if(stack != null && stack.stackSize > getInventoryStackLimit())
	{
		stack.stackSize = getInventoryStackLimit();
	}

	if(index != 9 && !sameStackInSlot)
	{
		changeOutput();
		markDirty();
	}
}

@Override
public int getInventoryStackLimit()
{
	return 64;
}

@Override
public boolean isUseableByPlayer(EntityPlayer player)
{
	return worldObj.getTileEntity(pos) != this ? false : player.getDistanceSq(pos.getX() + 0.5D, pos.getY() + 0.5D,
		pos.getZ() + 0.5D) <= 64.0D;
}

@Override
public void openInventory(EntityPlayer player)
{
}

@Override
public void closeInventory(EntityPlayer player)
{
}

@Override
public boolean isItemValidForSlot(int index, ItemStack stack)
{
	return index != 9;
}

@Override
public int getField(int id)
{
	return 0;
}

@Override
public void setField(int id, int value)
{
}

@Override
public int getFieldCount()
{
	return 0;
}

@Override
public void clear()
{
	for(int i = 0; i < getSizeInventory(); i++)
	{
		setStackInSlot(i, null);
	}
}

@Override
public void readFromNBT(NBTTagCompound compound)
{
	super.readFromNBT(compound);
	NBTTagList craftMatrix = compound.getTagList("CraftMatrix", Constants.NBT.TAG_COMPOUND);
	for(int i = 0; i < craftMatrix.tagCount(); i++)
	{
		NBTTagCompound stack = craftMatrix.getCompoundTagAt(i);
		int slot = stack.getByte("Slot") & 255;
		if(slot >= 0 && slot < 9) setStackInSlot(slot, ItemStack.loadItemStackFromNBT(stack));
	}
	NBTTagCompound result = compound.getCompoundTag("Result");
	if(result.hasNoTags())
		this.result = null;
	else this.result = ItemStack.loadItemStackFromNBT(result);
	changeOutput();
	craftTime = compound.getInteger("CraftTime");
	if(compound.hasKey("CustomName")) customName = compound.getString("CustomName");
}

@Override
public void writeToNBT(NBTTagCompound compound)
{
	super.writeToNBT(compound);
	NBTTagList craftMatrix = new NBTTagList();
	for(int i = 0; i < 9; i++)
	{
		if(getStackInSlot(i) != null)
		{
			NBTTagCompound stack = new NBTTagCompound();
			getStackInSlot(i).writeToNBT(stack);
			stack.setByte("Slot", (byte) i);
			craftMatrix.appendTag(stack);
		}
	}
	compound.setTag("CraftMatrix", craftMatrix);
	if(result != null)
	{
		NBTTagCompound result = new NBTTagCompound();
		this.result.writeToNBT(result);
		compound.setTag("Result", result);
	}
	compound.setInteger("CraftTime", craftTime);
	if(hasCustomName()) compound.setString("CustomName", customName);
}

@Override
public void update()
{
	updateOutput();
}

private void changeOutput()
{
	FarmersHeaven.LOGGER.info("Changing output");
	if(currentRecipe == null || !currentRecipe.matches(invCrafting, worldObj)) craftTime = 0;
	currentRecipe = null;
	for(Object object : CraftingManager.getInstance().getRecipeList())
	{
		IRecipe recipe = (IRecipe) object;
		if(recipe.matches(invCrafting, worldObj))
		{
			FarmersHeaven.LOGGER.info("Setting current recipe to an output of " + recipe.getRecipeOutput());
			currentRecipe = recipe;
		}
	}
	if(currentRecipe == null) FarmersHeaven.LOGGER.info("Could not find matching recipe");
}

private void updateOutput()
{
	boolean flag = currentRecipe == null;
	flag = flag || currentRecipe.getRecipeOutput() == null;
	if(result != null)
	{
		flag = flag || !ItemStack.areItemsEqual(currentRecipe.getRecipeOutput(), result);
		flag = flag || !ItemStack.areItemStackTagsEqual(currentRecipe.getRecipeOutput(), result);
		flag = flag || result.stackSize > result.getMaxStackSize() - currentRecipe.getRecipeOutput().stackSize;
	}
	if(flag)
	{
		craftTime = 0;
	}
	else
	{
		craftTime++;
		if(craftTime >= MAX_CRAFT_TIME)
		{
			FarmersHeaven.LOGGER.info("Crafting...");
			craftTime = 0;
			ItemStack recipeOutput = currentRecipe.getRecipeOutput(); // For some reason this has a stackSize of 0
			if(result == null)
				result = recipeOutput;
			else result.stackSize += recipeOutput.stackSize;
			ItemStack[] additionalOutputs = CraftingManager.getInstance().func_180303_b(invCrafting, worldObj);
			for(int i = 0; i < 9; i++)
			{
				decrStackSize(i, 1);
				if(additionalOutputs[i] != null)
				{
					if(getStackInSlot(i) == null)
					{
						setInventorySlotContents(i, additionalOutputs[i]);
					}
					else
					{
						EntityItem entity = new EntityItem(worldObj);
						entity.setLocationAndAngles(pos.getX() + 0.5, pos.getY() + 0.2, pos.getZ() + 0.5, 0, 0);
						entity.setEntityItemStack(additionalOutputs[i]);
						worldObj.spawnEntityInWorld(entity);
					}
				}
			}
		}
	}
}

@Override
public int[] getSlotsForFace(EnumFacing side)
{
	return side == EnumFacing.DOWN ? new int[] { 9 } : new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8 };
}

@Override
public boolean canInsertItem(int index, ItemStack itemStackIn, EnumFacing direction)
{
	return index != 9;
}

@Override
public boolean canExtractItem(int index, ItemStack stack, EnumFacing direction)
{
	return true;
}

public void setCustomName(String customName)
{
	this.customName = customName;
}

public boolean isCrafting()
{
	return craftTime > 0;
}

public int getScaleCraftingWidth(int maxWidth)
{
	return (int) ((float) craftTime / MAX_CRAFT_TIME * maxWidth);
}
}

If you need any more of my code, feel free to ask for it. You can also ask me to do some debugging tests

So can you see why the recipe output stackSize is always 0? I'm probably missing something really obvious lol

Thanks in advance

catch(Exception e)
{

}

Yay, Pokémon exception handling, gotta catch 'em all (and then do nothing with 'em).

Quote

July 13, 201510 yr

Author

Which method exactly modifies the recipe? getRecipeOutput?

catch(Exception e)
{

}

Yay, Pokémon exception handling, gotta catch 'em all (and then do nothing with 'em).

Quote

July 13, 201510 yr

Author

Oh I see! DERP!!! I wish I could spot these problems as quickly as you

catch(Exception e)
{

}

Yay, Pokémon exception handling, gotta catch 'em all (and then do nothing with 'em).

Quote

July 13, 201510 yr

Author

Okay so I've solved that problem, but I'm now getting some syncronization issues with the client and server. Here's my updated tile entity:

package com.earthcomputer.farmersheaven;

import java.lang.reflect.Field;

import net.minecraft.entity.item.EntityItem;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.IInventory;
import net.minecraft.inventory.ISidedInventory;
import net.minecraft.inventory.InventoryCrafting;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.CraftingManager;
import net.minecraft.item.crafting.IRecipe;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagList;
import net.minecraft.server.gui.IUpdatePlayerListBox;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.ChatComponentText;
import net.minecraft.util.ChatComponentTranslation;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.IChatComponent;
import net.minecraftforge.common.util.Constants;

public class TileEntityAutoCraftingTable extends TileEntity implements IUpdatePlayerListBox, ISidedInventory
{

private Container			container		= new Container() {
												@Override
												public boolean canInteractWith(EntityPlayer player)
												{
													return true;
												}

												@Override
												public void onCraftMatrixChanged(IInventory inventory)
												{
													//changeOutput();
												}
											};

private InventoryCrafting	invCrafting		= new InventoryCrafting(container, 3, 3);
private ItemStack			result;
private IRecipe				currentRecipe;
private boolean				canContinue		= true;
private int					craftTime		= 0;
public static final int		MAX_CRAFT_TIME	= 200;

private String				customName;

private static final Field	invCraftingStackList;

static
{
	try
	{
		invCraftingStackList = InventoryCrafting.class.getDeclaredField("stackList");
	}
	catch (Exception e)
	{
		throw new RuntimeException(e);
	}
	invCraftingStackList.setAccessible(true);
}

@Override
public String getName()
{
	return hasCustomName() ? customName : "container.autocrafting_table";
}

@Override
public boolean hasCustomName()
{
	return customName != null && customName.length() > 0;
}

@Override
public IChatComponent getDisplayName()
{
	return hasCustomName() ? new ChatComponentText(getName()) : new ChatComponentTranslation(getName());
}

@Override
public int getSizeInventory()
{
	return 10;
}

@Override
public ItemStack getStackInSlot(int index)
{
	return index == 9 ? result : invCrafting.getStackInSlot(index);
}

private void setStackInSlot(int index, ItemStack stack)
{
	if(index == 9)
		result = stack;
	else try
	{
		ItemStack before = getStackInSlot(index);
		((ItemStack[]) invCraftingStackList.get(invCrafting))[index] = stack;
		if(!ItemStack.areItemsEqual(before, stack) || !ItemStack.areItemStackTagsEqual(before, stack))
			changeOutput();
	}
	catch (Exception e)
	{
		throw new RuntimeException(e);
	}
}

@Override
public ItemStack decrStackSize(int index, int count)
{
	if(getStackInSlot(index) != null)
	{
		ItemStack stack;

		if(getStackInSlot(index).stackSize <= count)
		{
			stack = getStackInSlot(index);
			setStackInSlot(index, null);
			return stack;
		}
		else
		{
			stack = getStackInSlot(index).splitStack(count);

			if(getStackInSlot(index).stackSize == 0)
			{
				setStackInSlot(index, null);
			}

			return stack;
		}
	}
	else
	{
		return null;
	}
}

@Override
public ItemStack getStackInSlotOnClosing(int index)
{
	if(getStackInSlot(index) != null)
	{
		ItemStack itemstack = getStackInSlot(index);
		setStackInSlot(index, null);
		return itemstack;
	}
	else
	{
		return null;
	}
}

@Override
public void setInventorySlotContents(int index, ItemStack stack)
{
	boolean sameStackInSlot = stack != null && stack.isItemEqual(getStackInSlot(index))
		&& ItemStack.areItemStackTagsEqual(stack, getStackInSlot(index));
	setStackInSlot(index, stack);

	if(stack != null && stack.stackSize > getInventoryStackLimit())
	{
		stack.stackSize = getInventoryStackLimit();
	}

	if(index != 9 && !sameStackInSlot)
	{
		changeOutput();
		markDirty();
	}
}

@Override
public int getInventoryStackLimit()
{
	return 64;
}

@Override
public boolean isUseableByPlayer(EntityPlayer player)
{
	return worldObj.getTileEntity(pos) != this ? false : player.getDistanceSq(pos.getX() + 0.5D, pos.getY() + 0.5D,
		pos.getZ() + 0.5D) <= 64.0D;
}

@Override
public void openInventory(EntityPlayer player)
{
}

@Override
public void closeInventory(EntityPlayer player)
{
}

@Override
public boolean isItemValidForSlot(int index, ItemStack stack)
{
	return index != 9;
}

@Override
public int getField(int id)
{
	return 0;
}

@Override
public void setField(int id, int value)
{
}

@Override
public int getFieldCount()
{
	return 0;
}

@Override
public void clear()
{
	for(int i = 0; i < getSizeInventory(); i++)
	{
		setStackInSlot(i, null);
	}
}

@Override
public void readFromNBT(NBTTagCompound compound)
{
	super.readFromNBT(compound);
	NBTTagList craftMatrix = compound.getTagList("CraftMatrix", Constants.NBT.TAG_COMPOUND);
	for(int i = 0; i < craftMatrix.tagCount(); i++)
	{
		NBTTagCompound stack = craftMatrix.getCompoundTagAt(i);
		int slot = stack.getByte("Slot") & 255;
		if(slot >= 0 && slot < 9) setStackInSlot(slot, ItemStack.loadItemStackFromNBT(stack));
	}
	NBTTagCompound result = compound.getCompoundTag("Result");
	if(result.hasNoTags())
		this.result = null;
	else this.result = ItemStack.loadItemStackFromNBT(result);
	changeOutput();
	craftTime = compound.getInteger("CraftTime");
	if(compound.hasKey("CustomName")) customName = compound.getString("CustomName");
}

@Override
public void writeToNBT(NBTTagCompound compound)
{
	super.writeToNBT(compound);
	NBTTagList craftMatrix = new NBTTagList();
	for(int i = 0; i < 9; i++)
	{
		if(getStackInSlot(i) != null)
		{
			NBTTagCompound stack = new NBTTagCompound();
			getStackInSlot(i).writeToNBT(stack);
			stack.setByte("Slot", (byte) i);
			craftMatrix.appendTag(stack);
		}
	}
	compound.setTag("CraftMatrix", craftMatrix);
	if(result != null)
	{
		NBTTagCompound result = new NBTTagCompound();
		this.result.writeToNBT(result);
		compound.setTag("Result", result);
	}
	compound.setInteger("CraftTime", craftTime);
	if(hasCustomName()) compound.setString("CustomName", customName);
}

@Override
public void update()
{
	updateOutput();
}

private void changeOutput()
{
	FarmersHeaven.LOGGER.info("Changing output");
	if(currentRecipe == null || !currentRecipe.matches(invCrafting, worldObj)) craftTime = 0;
	currentRecipe = null;
	for(Object object : CraftingManager.getInstance().getRecipeList())
	{
		IRecipe recipe = (IRecipe) object;
		if(recipe.matches(invCrafting, worldObj))
		{
			FarmersHeaven.LOGGER.info("Setting current recipe to an output of " + recipe.getRecipeOutput());
			currentRecipe = recipe;
		}
	}
	if(currentRecipe == null) FarmersHeaven.LOGGER.info("Could not find matching recipe");
}

private void updateOutput()
{
	boolean flag = currentRecipe == null;
	flag = flag || currentRecipe.getRecipeOutput() == null;
	if(result != null)
	{
		flag = flag || !ItemStack.areItemsEqual(currentRecipe.getRecipeOutput(), result);
		flag = flag || !ItemStack.areItemStackTagsEqual(currentRecipe.getRecipeOutput(), result);
		flag = flag || result.stackSize > result.getMaxStackSize() - currentRecipe.getRecipeOutput().stackSize;
	}
	if(flag)
	{
		craftTime = 0;
	}
	else
	{
		craftTime++;
		if(craftTime >= MAX_CRAFT_TIME)
		{
			FarmersHeaven.LOGGER.info("Crafting...");
			craftTime = 0;
			ItemStack recipeOutput = currentRecipe.getRecipeOutput();
			if(result == null)
				result = recipeOutput.copy();
			else result.stackSize += recipeOutput.stackSize;
			ItemStack[] additionalOutputs = CraftingManager.getInstance().func_180303_b(invCrafting, worldObj);
			for(int i = 0; i < 9; i++)
			{
				decrStackSize(i, 1);
				if(additionalOutputs[i] != null)
				{
					if(getStackInSlot(i) == null)
					{
						setInventorySlotContents(i, additionalOutputs[i]);
					}
					else
					{
						EntityItem entity = new EntityItem(worldObj);
						entity.setLocationAndAngles(pos.getX() + 0.5, pos.getY() + 0.2, pos.getZ() + 0.5, 0, 0);
						entity.setEntityItemStack(additionalOutputs[i]);
						worldObj.spawnEntityInWorld(entity);
					}
				}
			}
		}
	}
}

@Override
public int[] getSlotsForFace(EnumFacing side)
{
	return side == EnumFacing.DOWN ? new int[] { 9 } : new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8 };
}

@Override
public boolean canInsertItem(int index, ItemStack itemStackIn, EnumFacing direction)
{
	return index != 9;
}

@Override
public boolean canExtractItem(int index, ItemStack stack, EnumFacing direction)
{
	return true;
}

public void setCustomName(String customName)
{
	this.customName = customName;
}

public boolean isCrafting()
{
	return craftTime > 0;
}

public int getScaleCraftingWidth(int maxWidth)
{
	return (int) ((float) craftTime / MAX_CRAFT_TIME * maxWidth);
}
}

catch(Exception e)
{

}

Yay, Pokémon exception handling, gotta catch 'em all (and then do nothing with 'em).

Quote

July 13, 201510 yr

Author

The client and server try to craft the items at different times, and refresh only when I relog

catch(Exception e)
{

}

Yay, Pokémon exception handling, gotta catch 'em all (and then do nothing with 'em).

Quote

July 13, 201510 yr

Author

Got to go now, so I think I'll post this issue tomorrow on a different thread

catch(Exception e)
{

}

Yay, Pokémon exception handling, gotta catch 'em all (and then do nothing with 'em).

Quote

July 13, 201510 yr

Author

Oh OK, I'll play around with that, see if I can get it working. It might involve sending packets which I was hoping to avoid, but there should be a simpler way

catch(Exception e)
{

}

Yay, Pokémon exception handling, gotta catch 'em all (and then do nothing with 'em).

Quote

July 13, 201510 yr

Author

Okay thanks

catch(Exception e)
{

}

Yay, Pokémon exception handling, gotta catch 'em all (and then do nothing with 'em).

Quote

July 14, 201510 yr

Author

I got it working using packets - it wasn't so much the inventory slot which were the problem, it was the craftTime which wasn't synchronized (it was being displayed on the GUI client side) Thanks for your help diesieben07

catch(Exception e)
{

}

Yay, Pokémon exception handling, gotta catch 'em all (and then do nothing with 'em).

Quote

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[1.8] [Solved] Autocrafting Table not crafting item

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