[SOLVED] [1.12.2] My custom furnace doesn't make output

hyper1423 · June 22, 2019

My custom furnace uses the input in milliseconds but doesn't make output. Also it doesn't drop container item when destroyed. (I watched HarryTalks' tutorial)

The code is here:

Block Class

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import java.util.Random;
import java.util.logging.Logger;

import com.hyper1423.somestuff.Main;
import com.hyper1423.somestuff.blocks.BlockBase;
import com.hyper1423.somestuff.init.ModBlocks;
import com.hyper1423.somestuff.util.Reference;

import net.minecraft.block.BlockHorizontal;
import net.minecraft.block.ITileEntityProvider;
import net.minecraft.block.SoundType;
import net.minecraft.block.material.Material;
import net.minecraft.block.properties.IProperty;
import net.minecraft.block.properties.PropertyBool;
import net.minecraft.block.properties.PropertyDirection;
import net.minecraft.block.state.BlockStateContainer;
import net.minecraft.block.state.IBlockState;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumBlockRenderType;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.EnumHand;
import net.minecraft.util.Mirror;
import net.minecraft.util.Rotation;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

public class BlastFurnace extends BlockBase implements ITileEntityProvider {

	int currentFuel = 0;
	public static final PropertyDirection FACING = BlockHorizontal.FACING;
	public static final PropertyBool BURNING = PropertyBool.create("burning");
	private static Logger logger = Logger.getLogger(Reference.MOD_ID);

	public BlastFurnace(String name) {
		super(name, Material.IRON);
		setSoundType(SoundType.ANVIL);
		this.setDefaultState(
				this.blockState.getBaseState().withProperty(FACING, EnumFacing.NORTH).withProperty(BURNING, false));
	}
	
	@Override
	public Item getItemDropped(IBlockState state, Random rand, int fortune) {
		return Item.getItemFromBlock(ModBlocks.BLAST_FURNACE);

	}

	@Override
	public ItemStack getItem(World worldIn, BlockPos pos, IBlockState state) {
		return new ItemStack(ModBlocks.BLAST_FURNACE);

	}

	@Override
	public boolean onBlockActivated(World worldIn, BlockPos pos, IBlockState state, EntityPlayer playerIn,
			EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ) {

		if (!worldIn.isRemote) {
			playerIn.openGui(Main.instance, Reference.GUI_BLAST_FURNACE, worldIn, pos.getX(), pos.getY(), pos.getZ());
		}
		logger.info("Tried to open GUI");
		return true;
	}

	@Override
	public void onBlockAdded(World worldIn, BlockPos pos, IBlockState state) {
		// TODO Auto-generated method stub

		if (!worldIn.isRemote) {

			IBlockState north = worldIn.getBlockState(pos.north());
			IBlockState south = worldIn.getBlockState(pos.south());
			IBlockState west = worldIn.getBlockState(pos.west());
			IBlockState east = worldIn.getBlockState(pos.east());
			EnumFacing face = (EnumFacing) state.getValue(FACING);

			if (face == EnumFacing.NORTH)
				face = EnumFacing.SOUTH;
			if (face == EnumFacing.SOUTH)
				face = EnumFacing.NORTH;
			if (face == EnumFacing.WEST)
				face = EnumFacing.EAST;
			if (face == EnumFacing.EAST)
				face = EnumFacing.WEST;
			worldIn.setBlockState(pos, state.withProperty(FACING, face), 2);
		}
	}

	public static void setState(boolean active, World worldIn, BlockPos pos) {
		IBlockState state = worldIn.getBlockState(pos);
		TileEntity tileentity = worldIn.getTileEntity(pos);

		if (active)
			worldIn.setBlockState(pos, ModBlocks.BLAST_FURNACE.getDefaultState()
					.withProperty(FACING, state.getValue(FACING)).withProperty(BURNING, true), 1 | 2);
		else
			worldIn.setBlockState(pos, ModBlocks.BLAST_FURNACE.getDefaultState()
					.withProperty(FACING, state.getValue(FACING)).withProperty(BURNING, false), 1 | 2);

		if (tileentity != null) {
			tileentity.validate();
			worldIn.setTileEntity(pos, tileentity);
		}
	}

	@Override
	public IBlockState getStateForPlacement(World world, BlockPos pos, EnumFacing facing, float hitX, float hitY,
			float hitZ, int meta, EntityLivingBase placer, EnumHand hand) {
		// TODO Auto-generated method stub
		return this.getDefaultState().withProperty(FACING, placer.getHorizontalFacing().getOpposite());
	}

	@Override
	public void onBlockPlacedBy(World worldIn, BlockPos pos, IBlockState state, EntityLivingBase placer,
			ItemStack stack) {
		// TODO Auto-generated method stub
		worldIn.setBlockState(pos,
				this.getDefaultState().withProperty(FACING, placer.getHorizontalFacing().getOpposite()), 2);
	}

	@Override
	public EnumBlockRenderType getRenderType(IBlockState state) {
		// TODO Auto-generated method stub
		return EnumBlockRenderType.MODEL;
	}

	@Override
	public IBlockState withRotation(IBlockState state, Rotation rot) {
		// TODO Auto-generated method stub
		return state.withProperty(FACING, rot.rotate((EnumFacing) state.getValue(FACING)));
	}

	@Override
	public IBlockState withMirror(IBlockState state, Mirror mirrorIn) {
		// TODO Auto-generated method stub
		return state.withRotation(mirrorIn.toRotation((EnumFacing) state.getValue(FACING)));
	}

	@Override
	protected BlockStateContainer createBlockState() {
		// TODO Auto-generated method stub
		return new BlockStateContainer(this, new IProperty[] { BURNING, FACING });
	}

	@Override
	public IBlockState getStateFromMeta(int meta) {
		// TODO Auto-generated method stub
		EnumFacing facing = EnumFacing.getFront(meta);
		if (facing.getAxis() == EnumFacing.Axis.Y)
			facing = EnumFacing.NORTH;
		return this.getDefaultState().withProperty(FACING, facing);
	}

	@Override
	public int getMetaFromState(IBlockState state) {
		// TODO Auto-generated method stub
		return ((EnumFacing) state.getValue(FACING)).getIndex();
	}

	@Override
	public TileEntity createNewTileEntity(World worldIn, int meta) {
		// TODO Auto-generated method stub
		return new TileEntityBlastFurnace();
	}
}

TileEntity Class

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import com.hyper1423.somestuff.init.ModItems;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraft.item.ItemHoe;
import net.minecraft.item.ItemStack;
import net.minecraft.item.ItemSword;
import net.minecraft.item.ItemTool;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.ITickable;
import net.minecraft.util.text.ITextComponent;
import net.minecraft.util.text.TextComponentString;
import net.minecraft.util.text.TextComponentTranslation;
import net.minecraftforge.common.capabilities.Capability;
import net.minecraftforge.event.ForgeEventFactory;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;
import net.minecraftforge.items.CapabilityItemHandler;
import net.minecraftforge.items.ItemStackHandler;

public class TileEntityBlastFurnace extends TileEntity implements ITickable {

	private ItemStackHandler inventory = new ItemStackHandler(4);
	private String customname;
	private ItemStack smelting = ItemStack.EMPTY;

	private int burnTime = 0;
	private int currentBurnTime = 0;
	private int cookTime = 0;
	private int totalCookTime = 600;

	@Override
	public boolean hasCapability(Capability<?> capability, EnumFacing facing) {
		// TODO Auto-generated method stub
		if (capability == CapabilityItemHandler.ITEM_HANDLER_CAPABILITY)
			return true;
		else
			return false;
	}

	@Override
	public <T> T getCapability(Capability<T> capability, EnumFacing facing) {
		// TODO Auto-generated method stub
		if (hasCapability(capability, null))
			return (T) this.inventory;
		return super.getCapability(capability, facing);
	}

	public boolean hasCustomName() {

		return customname != null && !customname.isEmpty();
	}

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

	@Override
	public ITextComponent getDisplayName() {
		return this.hasCustomName() ? new TextComponentString(this.customname)
				: new TextComponentTranslation("container.blast_furnace");
	}

	@Override
	public void readFromNBT(NBTTagCompound compound) {

		super.readFromNBT(compound);
		this.inventory.deserializeNBT(compound.getCompoundTag("Inventory"));
		burnTime = compound.getInteger("BurnTime");
		cookTime = compound.getInteger("CookTime");
		totalCookTime = compound.getInteger("CookTimeTotal");
		currentBurnTime = getItemBurnTime((ItemStack) inventory.getStackInSlot(1));

		if (compound.hasKey("CustomName", 8))
			setCustomName(compound.getString("CustomName"));
	}

	@Override
	public NBTTagCompound writeToNBT(NBTTagCompound compound) {

		super.writeToNBT(compound);
		compound.setInteger("BurnTime", (short) burnTime);
		compound.setInteger("CookTime", (short) cookTime);
		compound.setInteger("CookTimeTotal", (short) totalCookTime);
		compound.setTag("inventory", this.inventory.serializeNBT());

		if (hasCustomName())
			compound.setString("CustomName", customname);
		return compound;
	}

	public boolean isBurning() {
		return burnTime > 0;
	}

	@SideOnly(Side.CLIENT)
	public static boolean isBurning(TileEntityBlastFurnace te) {
		return te.getField(0) > 0;
	}

	@Override
	public void update() {

		if (isBurning()) {
			--burnTime;
			BlastFurnace.setState(true, world, pos);
		}
		ItemStack fuel = (ItemStack) inventory.getStackInSlot(1);

		if (isBurning() || !fuel.isEmpty() && !inventory.getStackInSlot(0).isEmpty()) {
			if (!isBurning() && canSmelt()) {
				burnTime = getItemBurnTime(fuel);
				currentBurnTime = burnTime;

				if (isBurning() && !fuel.isEmpty()) {
					Item item = fuel.getItem();
					fuel.shrink(1);

					if (fuel.isEmpty()) {
						ItemStack item1 = item.getContainerItem(fuel);
						inventory.setStackInSlot(1, item1);
					}
				}
			}

			if (isBurning() && canSmelt() && cookTime > 0) {
				cookTime++;

				if (cookTime == totalCookTime) {
					if (inventory.getStackInSlot(2).getCount() > 0) {
						inventory.getStackInSlot(2).grow(1);
					} else {
						inventory.insertItem(2, smelting, false);
					}

					if (inventory.getStackInSlot(3).getCount() > 0) {
						inventory.getStackInSlot(3).grow(1);
					} else {
						inventory.insertItem(3, new ItemStack(ModItems.SLUG, 1), false);
					}
				}

				smelting = ItemStack.EMPTY;
				cookTime = 0;
				return;
			}

//			} else if (!isBurning() && cookTime > 0) {
//				if (cookTime > getCookTime(inventory.getStackInSlot(1)) / 3)
//					cookTime = MathHelper.clamp(cookTime - 3, 0, totalCookTime);
//				else
//					MathHelper.clamp(cookTime - 2, 0, totalCookTime);
			else {
				if (this.canSmelt() && this.isBurning()) {
					ItemStack output = BlastFurnaceRecipes.getInstance().getResult(inventory.getStackInSlot(0));
					if (!output.isEmpty()) {
						smelting = output;
						cookTime++;
						inventory.getStackInSlot(0).shrink(1);
					}
				}
			}
		}
//			if (flag != isBurning()) {
//				flag1 = true;
//				BlastFurnace.setState(isBurning(), world, pos);
//			}
//		}
//		if (flag1) {
//			markDirty();
//		}
	}

	private boolean canSmelt() {
		if (((ItemStack) inventory.getStackInSlot(0)).isEmpty())
			return false;
		else {
			ItemStack result = BlastFurnaceRecipes.getInstance().getResult((ItemStack) inventory.getStackInSlot(0));
			if (result.isEmpty())
				return false;
			else {
				ItemStack output = (ItemStack) inventory.getStackInSlot(2);
				ItemStack slug = (ItemStack) inventory.getStackInSlot(3);
				if (output.isEmpty())
					return true;
				if (!output.isItemEqual(result))
					return false;
				int res1 = output.getCount() + result.getCount();
				int res2 = slug.getCount() + 1;
				return (res1 <= 64 && res1 <= output.getMaxStackSize())
						|| (res2 <= 64 && res2 <= slug.getMaxStackSize());
			}
		}
	}

	public static int getItemBurnTime(ItemStack fuel) {
		if (fuel.isEmpty())
			return 0;
		else {
			Item item = fuel.getItem();

			if (item instanceof ItemBlock && Block.getBlockFromItem(item) != Blocks.AIR) {
				Block block = Block.getBlockFromItem(item);

				if (block == Blocks.WOODEN_SLAB)
					return 100;
				if (block == Blocks.ACACIA_STAIRS || block == Blocks.OAK_STAIRS || block == Blocks.JUNGLE_STAIRS
						|| block == Blocks.BIRCH_STAIRS || block == Blocks.DARK_OAK_STAIRS
						|| block == Blocks.SPRUCE_STAIRS)
					return 150;
				if (block.getDefaultState().getMaterial() == Material.WOOD)
					return 200;
				if (block == Blocks.COAL_BLOCK)
					return 14400;
			}

			if (item instanceof ItemTool && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item instanceof ItemSword && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item instanceof ItemHoe && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item == Items.STICK)
				return 50;
			if (item == Items.COAL)
				return 1600;
			if (item == Items.LAVA_BUCKET)
				return 20000;
			if (item == Item.getItemFromBlock(Blocks.SAPLING))
				return 70;
			if (item == Items.BLAZE_ROD)
				return 1600;

			return ForgeEventFactory.getItemBurnTime(fuel);
		}
	}

	public static boolean isItemFuel(ItemStack fuel) {
		return getItemBurnTime(fuel) > 0;
	}

	public boolean isUsableByPlayer(EntityPlayer player) {

		return world.getTileEntity(pos) != this ? false
				: player.getDistanceSq((double) pos.getX() + 0.5D, (double) pos.getY() + 0.5D,
						(double) pos.getZ() + 0.5D) <= 64.0D;
	}

	public boolean isItemValidForSlot(int index, ItemStack stack) {
		if (index == 2 || index == 3)
			return false;
		if (index != 1)
			return true;
		else {
			return isItemFuel(stack);
		}
	}

	public int getField(int id) {
		switch (id) {
		case 0:
			return burnTime;
		case 1:
			return currentBurnTime;
		case 2:
			return cookTime;
		case 3:
			return totalCookTime;
		default:
			return 0;
		}
	}

	public void setField(int id, int value) {
		switch (id) {
		case 0:
			burnTime = value;
			break;
		case 1:
			currentBurnTime = value;
			break;
		case 2:
			cookTime = value;
			break;
		case 3:
			totalCookTime = value;
		}
	}
}

Container class

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import com.hyper1423.somestuff.blocks.machines.blastfurnace.slots.SlotBlastFurnaceFuel;
import com.hyper1423.somestuff.blocks.machines.blastfurnace.slots.SlotBlastFurnaceOutput;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.IContainerListener;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;
import net.minecraftforge.items.CapabilityItemHandler;
import net.minecraftforge.items.IItemHandler;
import net.minecraftforge.items.SlotItemHandler;

public class ContainerBlastFurnace extends Container {

	private final TileEntityBlastFurnace tileentity;
	private int cookTime, totalCookTime, burnTime, currentBurnTime;

	public ContainerBlastFurnace(InventoryPlayer player, TileEntityBlastFurnace tileentity) {
		this.tileentity = tileentity;
		IItemHandler inventory = tileentity.getCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, null);

		this.addSlotToContainer(new SlotItemHandler(inventory, 0, 35, 17));
		this.addSlotToContainer(new SlotBlastFurnaceFuel(inventory, 1, 35, 53));
		this.addSlotToContainer(new SlotBlastFurnaceOutput(player.player, inventory, 2, 95, 35));
		this.addSlotToContainer(new SlotBlastFurnaceOutput(player.player, inventory, 3, 143, 53));

		for (int y = 0; y < 3; y++) {
			for (int x = 0; x < 9; x++) {
				this.addSlotToContainer(new Slot(player, x + y * 9 + 9, 8 + x * 18, 84 + y * 18));
			}
		}

		for (int x = 0; x < 9; x++) {
			this.addSlotToContainer(new Slot(player, x, 8 + x * 18, 142));
		}
	}

	@Override
	public void detectAndSendChanges() {
		// TODO Auto-generated method stub
		super.detectAndSendChanges();

		for (int i = 0; i < this.listeners.size(); ++i) {
			IContainerListener listener = (IContainerListener) this.listeners.get(i);

			if (this.burnTime != this.tileentity.getField(0))
				listener.sendWindowProperty(this, 0, this.tileentity.getField(0));
			if (this.currentBurnTime != this.tileentity.getField(1))
				listener.sendWindowProperty(this, 1, this.tileentity.getField(1));
			if (this.cookTime != this.tileentity.getField(2))
				listener.sendWindowProperty(this, 2, this.tileentity.getField(2));
			if (this.totalCookTime != this.tileentity.getField(3))
				listener.sendWindowProperty(this, 3, this.tileentity.getField(3));
		}

		this.burnTime = this.tileentity.getField(0);
		this.currentBurnTime = this.tileentity.getField(1);
		this.cookTime = this.tileentity.getField(2);
		this.totalCookTime = this.tileentity.getField(3);
	}

	@Override
	@SideOnly(Side.CLIENT)
	public void updateProgressBar(int id, int data) {
		// TODO Auto-generated method stub
		this.tileentity.setField(id, data);
	}

	@Override
	public boolean canInteractWith(EntityPlayer playerIn) {
		// TODO Auto-generated method stub
		return this.tileentity.isUsableByPlayer(playerIn);
	}

	@Override
	public ItemStack transferStackInSlot(EntityPlayer playerIn, int index) {
		ItemStack stack = ItemStack.EMPTY;
		Slot slot = (Slot) this.inventorySlots.get(index);

		if (slot != null && slot.getHasStack()) {
			ItemStack stack1 = slot.getStack();
			stack = stack1.copy();

			if (index == 2 || index == 3) {
				if (!this.mergeItemStack(stack1, 4, 40, true))
					return ItemStack.EMPTY;
				slot.onSlotChange(stack1, stack);
			} else if (index != 1 && index != 0) {
				if (!BlastFurnaceRecipes.getInstance().getResult(stack1).isEmpty()) {
					if (!this.mergeItemStack(stack1, 0, 1, false)) {
						return ItemStack.EMPTY;
					} else if (TileEntityBlastFurnace.isItemFuel(stack1)) {
						if (!this.mergeItemStack(stack1, 1, 2, false))
							return ItemStack.EMPTY;
					} else if (TileEntityBlastFurnace.isItemFuel(stack1)) {
						if (!this.mergeItemStack(stack1, 1, 2, false))
							return ItemStack.EMPTY;
					} else if (TileEntityBlastFurnace.isItemFuel(stack1)) {
						if (!this.mergeItemStack(stack1, 1, 2, false))
							return ItemStack.EMPTY;
					} else if (index >= 4 && index < 31) {
						if (!this.mergeItemStack(stack1, 31, 40, false))
							return ItemStack.EMPTY;
					} else if (index >= 31 && index < 40 && !this.mergeItemStack(stack1, 4, 31, false)) {
						return ItemStack.EMPTY;
					}
				}
			} else if (!this.mergeItemStack(stack1, 4, 40, false)) {
				return ItemStack.EMPTY;
			}
			if (stack1.isEmpty()) {
				slot.putStack(ItemStack.EMPTY);
			} else {
				slot.onSlotChanged();

			}
			if (stack1.getCount() == stack.getCount())
				return ItemStack.EMPTY;
			slot.onTake(playerIn, stack1);
		}
		return stack;
	}

}

Fuel Slot class:

Spoiler



package com.hyper1423.somestuff.blocks.machines.blastfurnace.slots;

import com.hyper1423.somestuff.blocks.machines.blastfurnace.TileEntityBlastFurnace;

import net.minecraft.item.ItemStack;
import net.minecraftforge.items.IItemHandler;
import net.minecraftforge.items.SlotItemHandler;

public class SlotBlastFurnaceFuel extends SlotItemHandler {

	public SlotBlastFurnaceFuel(IItemHandler inventory, int index, int x, int y) {
		super(inventory, index, x, y);
		// TODO Auto-generated constructor stub
	}

	@Override
	public boolean isItemValid(ItemStack stack) {
		// TODO Auto-generated method stub
		return TileEntityBlastFurnace.isItemFuel(stack);
	}
	
	@Override
	public int getItemStackLimit(ItemStack stack) {
		// TODO Auto-generated method stub
		return super.getItemStackLimit(stack);
	}
}

Output Slot class:

Spoiler



package com.hyper1423.somestuff.blocks.machines.blastfurnace.slots;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;
import net.minecraftforge.items.IItemHandler;
import net.minecraftforge.items.SlotItemHandler;

public class SlotBlastFurnaceOutput extends SlotItemHandler {

	private final EntityPlayer player;
	private int removeCount;
	
	public SlotBlastFurnaceOutput(EntityPlayer player, IItemHandler inventory, int index, int x, int y) {
		super(inventory, index, x, y);
		this.player = player;
		// TODO Auto-generated constructor stub
	}
	
	@Override
	public boolean isItemValid(ItemStack stack) {
		return false;
	}
	
	@Override
	public ItemStack onTake(EntityPlayer thePlayer, ItemStack stack) {
		// TODO Auto-generated method stub
		this.onCrafting(stack);
		super.onTake(thePlayer, stack);
		return stack;
	}
	
	@Override
	public ItemStack decrStackSize(int amount) {
		// TODO Auto-generated method stub
		if(this.getHasStack()) this.removeCount += Math.min(amount, this.getStack().getCount());
		return super.decrStackSize(amount);
	}

}

GUI class

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import com.hyper1423.somestuff.util.Reference;

import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.util.ResourceLocation;

public class GuiBlastFurnace extends GuiContainer {

	private static final ResourceLocation TEXTURES = new ResourceLocation(Reference.MOD_ID,
			"textures/gui/blast_furnace.png");
	private final InventoryPlayer player;
	private final TileEntityBlastFurnace tileentity;

	public GuiBlastFurnace(InventoryPlayer player, TileEntityBlastFurnace tileentity) {
		super(new ContainerBlastFurnace(player, tileentity));
		this.player = player;
		this.tileentity = tileentity;
		// TODO Auto-generated constructor stub
	}

	@Override
	protected void drawGuiContainerForegroundLayer(int mouseX, int mouseY) {
		// TODO Auto-generated method stub
		if (this.tileentity.getDisplayName() != null) {
			String tileName = this.tileentity.getDisplayName().getUnformattedText();
			this.fontRenderer.drawString(tileName,
					(this.xSize / 2 - this.fontRenderer.getStringWidth(tileName) / 2) + 3, 8, 0x404040);
			this.fontRenderer.drawString(this.player.getDisplayName().getUnformattedText(), 8, this.ySize - 96 + 2,
					0x404040);
		}
	}

	@Override
	protected void drawGuiContainerBackgroundLayer(float partialTicks, int mouseX, int mouseY) {
		GlStateManager.color(1.0f, 1.0f, 1.0f, 1.0f);
		this.mc.getTextureManager().bindTexture(TEXTURES);
		this.drawTexturedModalRect(this.guiLeft, this.guiTop, 0, 0, this.xSize, this.ySize);

		if (TileEntityBlastFurnace.isBurning(tileentity)) {
			int k = this.getBurnLeftScaled(13);
			this.drawTexturedModalRect(this.guiLeft + 36, this.guiTop + 37 + 12 - k, 176, 12 - k, 14, k + 1);
		}

		int l = this.getCookProgressScaled(24);
		this.drawTexturedModalRect(this.guiLeft + 58, this.guiTop + 35, 176, 14, l + 1, 16);
	}

	private int getBurnLeftScaled(int pixels) {
		int i = this.tileentity.getField(1);
		int j = this.tileentity.getField(0);
		if (i == 0)
			i = 200;
		return j * pixels / i;
	}

	private int getCookProgressScaled(int pixels) {
		int i = this.tileentity.getField(2);
		int j = this.tileentity.getField(3);
		return j != 0 && i != 0 ? i * pixels / j : 0;
	}
}

Recipe class

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import java.util.Map;
import java.util.Map.Entry;

import com.google.common.collect.Maps;
import com.hyper1423.somestuff.init.ModItems;

import net.minecraft.init.Blocks;
import net.minecraft.item.ItemStack;

public class BlastFurnaceRecipes {
	private static final BlastFurnaceRecipes INSTANCE = new BlastFurnaceRecipes();
	private final Map<ItemStack, ItemStack> smeltingList = Maps.<ItemStack, ItemStack>newHashMap();
	private final Map<ItemStack, Float> experienceList = Maps.<ItemStack, Float>newHashMap();

	public static BlastFurnaceRecipes getInstance() {
		return INSTANCE;
	}

	private BlastFurnaceRecipes() {
		addRecipe(new ItemStack(Blocks.ACACIA_FENCE),
				new ItemStack(ModItems.SLUG), 5.0F);
	}

	public void addRecipe(ItemStack input, ItemStack result, float experience) {
		if (getResult(input) != ItemStack.EMPTY)
			return;
		this.smeltingList.put(input, result);
		this.experienceList.put(result, Float.valueOf(experience));
	}

	public ItemStack getResult(ItemStack input) {
		for (Entry<ItemStack, ItemStack> entry : this.smeltingList.entrySet()) {
			if (this.compareItemStacks(input, (ItemStack) entry.getKey())) {
				return (ItemStack) entry.getValue();
			}
		}
		return ItemStack.EMPTY;
	}

	private boolean compareItemStacks(ItemStack stack1, ItemStack stack2) {
		return stack2.getItem() == stack1.getItem()
				&& (stack2.getMetadata() == 32767 || stack2.getMetadata() == stack1.getMetadata());
	}

	public Map<ItemStack, ItemStack> getDualSmeltingList() {
		return this.smeltingList;
	}

	public float getResultExperience(ItemStack stack) {
		for (Entry<ItemStack, Float> entry : this.experienceList.entrySet()) {
			if (this.compareItemStacks(stack, (ItemStack) entry.getKey())) {
				return ((Float) entry.getValue()).floatValue();
			}
		}
		return 0.0F;
	}
}

Sorry for my bad english

Edited June 30, 2019 by hyper1423
Solved

hyper1423 · June 23, 2019

12 hours ago, diesieben07 said:

Code style, issue 4.

Problematic code, issue 4, 9 (BlastFurnace#currentFuel).

This is why you use constants instead of hard-coding strings everywhere.

Quote

4. Do not use ITileEntityProvider or BlockContainer. These classes are legacy vanilla code. To add a TileEntity to your Block, override hasTileEntity and createTileEntity in your Block class.

Should I override it like this?

Spoiler


	@Override
	public boolean hasTileEntity() {
		// TODO Auto-generated method stub
		return super.hasTileEntity(this.getDefaultState());
	}
	
	@Override
	public TileEntity createTileEntity(World world, IBlockState state) {
		// TODO Auto-generated method stub
		return super.createTileEntity(world, state);
	}

Quote

9. Any IForgeRegistryEntry (commonly items and blocks) is singleton-like. That means that there is only once instance of your block class. There is not a new Block instance for every position in the world and there is not a new Item instance for every ItemStack. This means that you cannot store position-related things as instance fields in your block class, etc. You must use a TileEntity resp. the NBT data on ItemStack.

Are you saying to remove BlastFurnace.currentFuel?

Quote

4. Do not abuse inheritance for code-reuse. This often manifests in classes like ItemBase, BaseItem or ItemExampleMod. Using this pattern prevents you from extending other essential classes, such as ItemFood and in that case requires code duplication. Prefer composition or utility methods instead to reuse code.

What do you mean? Should I remove BlockBase class and add methods in the BlockBase class in each block classes?

12 hours ago, diesieben07 said:

This is why you use constants instead of hard-coding strings everywhere.

I changed TileEntity Like This:

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import com.hyper1423.somestuff.init.ModItems;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraft.item.ItemHoe;
import net.minecraft.item.ItemStack;
import net.minecraft.item.ItemSword;
import net.minecraft.item.ItemTool;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.ITickable;
import net.minecraft.util.text.ITextComponent;
import net.minecraft.util.text.TextComponentString;
import net.minecraft.util.text.TextComponentTranslation;
import net.minecraftforge.common.capabilities.Capability;
import net.minecraftforge.event.ForgeEventFactory;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;
import net.minecraftforge.items.CapabilityItemHandler;
import net.minecraftforge.items.ItemStackHandler;

public class TileEntityBlastFurnace extends TileEntity implements ITickable {

	private ItemStackHandler inventory = new ItemStackHandler(4);
	private String customname;
	private ItemStack smelting = ItemStack.EMPTY;
	
	private final String[] nbtTags = { "BurnTime", "CookTime", "CookTimeTotal" };
	private final String inventoryKey = "inventory";

	private int burnTime = 0;
	private int currentBurnTime = 0;
	private int cookTime = 0;
	private int totalCookTime = 600;

	@Override
	public boolean hasCapability(Capability<?> capability, EnumFacing facing) {
		// TODO Auto-generated method stub
		if (capability == CapabilityItemHandler.ITEM_HANDLER_CAPABILITY)
			return true;
		else
			return false;
	}

	@Override
	public <T> T getCapability(Capability<T> capability, EnumFacing facing) {
		// TODO Auto-generated method stub
		if (hasCapability(capability, null))
			return (T) this.inventory;
		return super.getCapability(capability, facing);
	}

	public boolean hasCustomName() {

		return customname != null && !customname.isEmpty();
	}

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

	@Override
	public ITextComponent getDisplayName() {
		return this.hasCustomName() ? new TextComponentString(this.customname)
				: new TextComponentTranslation("container.blast_furnace");
	}

	@Override
	public void readFromNBT(NBTTagCompound compound) {

		super.readFromNBT(compound);
		this.inventory.deserializeNBT(compound.getCompoundTag(inventoryKey));
		burnTime = compound.getInteger(nbtTags[0]);
		cookTime = compound.getInteger(nbtTags[1]);
		totalCookTime = compound.getInteger(nbtTags[2]);
		currentBurnTime = getItemBurnTime((ItemStack) inventory.getStackInSlot(1));

		if (compound.hasKey("CustomName", 8))
			setCustomName(compound.getString("CustomName"));
	}

	@Override
	public NBTTagCompound writeToNBT(NBTTagCompound compound) {

		super.writeToNBT(compound);
		compound.setInteger(nbtTags[0], (short) burnTime);
		compound.setInteger(nbtTags[1], (short) cookTime);
		compound.setInteger(nbtTags[2], (short) totalCookTime);
		compound.setTag(inventoryKey, this.inventory.serializeNBT());

		if (hasCustomName())
			compound.setString("CustomName", customname);
		return compound;
	}

	public boolean isBurning() {
		return burnTime > 0;
	}

	@SideOnly(Side.CLIENT)
	public static boolean isBurning(TileEntityBlastFurnace te) {
		return te.getField(0) > 0;
	}

	@Override
	public void update() {

		if (isBurning()) {
			--burnTime;
			BlastFurnace.setState(true, world, pos);
		}
		ItemStack fuel = (ItemStack) inventory.getStackInSlot(1);

		if (isBurning() || !fuel.isEmpty() && !inventory.getStackInSlot(0).isEmpty()) {
			if (!isBurning() && canSmelt()) {
				burnTime = getItemBurnTime(fuel);
				currentBurnTime = burnTime;

				if (isBurning() && !fuel.isEmpty()) {
					Item item = fuel.getItem();
					fuel.shrink(1);

					if (fuel.isEmpty()) {
						ItemStack item1 = item.getContainerItem(fuel);
						inventory.setStackInSlot(1, item1);
					}
				}
			}

			if (isBurning() && canSmelt() && cookTime > 0) {
				cookTime++;

				if (cookTime == totalCookTime) {
					if (inventory.getStackInSlot(2).getCount() > 0) {
						inventory.getStackInSlot(2).grow(1);
					} else {
						inventory.insertItem(2, smelting, false);
					}

					if (inventory.getStackInSlot(3).getCount() > 0) {
						inventory.getStackInSlot(3).grow(1);
					} else {
						inventory.insertItem(3, new ItemStack(ModItems.SLUG, 1), false);
					}
				}

				smelting = ItemStack.EMPTY;
				cookTime = 0;
				return;
			}

//			} else if (!isBurning() && cookTime > 0) {
//				if (cookTime > getCookTime(inventory.getStackInSlot(1)) / 3)
//					cookTime = MathHelper.clamp(cookTime - 3, 0, totalCookTime);
//				else
//					MathHelper.clamp(cookTime - 2, 0, totalCookTime);
			else {
				if (this.canSmelt() && this.isBurning()) {
					ItemStack output = BlastFurnaceRecipes.getInstance().getResult(inventory.getStackInSlot(0));
					if (!output.isEmpty()) {
						smelting = output;
						cookTime++;
						inventory.getStackInSlot(0).shrink(1);
					}
				}
			}
		}
//			if (flag != isBurning()) {
//				flag1 = true;
//				BlastFurnace.setState(isBurning(), world, pos);
//			}
//		}
//		if (flag1) {
//			markDirty();
//		}
	}

	private boolean canSmelt() {
		if (((ItemStack) inventory.getStackInSlot(0)).isEmpty())
			return false;
		else {
			ItemStack result = BlastFurnaceRecipes.getInstance().getResult((ItemStack) inventory.getStackInSlot(0));
			if (result.isEmpty())
				return false;
			else {
				ItemStack output = (ItemStack) inventory.getStackInSlot(2);
				ItemStack slug = (ItemStack) inventory.getStackInSlot(3);
				if (output.isEmpty())
					return true;
				if (!output.isItemEqual(result))
					return false;
				int res1 = output.getCount() + result.getCount();
				int res2 = slug.getCount() + 1;
				return (res1 <= 64 && res1 <= output.getMaxStackSize())
						|| (res2 <= 64 && res2 <= slug.getMaxStackSize());
			}
		}
	}

	public static int getItemBurnTime(ItemStack fuel) {
		if (fuel.isEmpty())
			return 0;
		else {
			Item item = fuel.getItem();

			if (item instanceof ItemBlock && Block.getBlockFromItem(item) != Blocks.AIR) {
				Block block = Block.getBlockFromItem(item);

				if (block == Blocks.WOODEN_SLAB)
					return 100;
				if (block == Blocks.ACACIA_STAIRS || block == Blocks.OAK_STAIRS || block == Blocks.JUNGLE_STAIRS
						|| block == Blocks.BIRCH_STAIRS || block == Blocks.DARK_OAK_STAIRS
						|| block == Blocks.SPRUCE_STAIRS)
					return 150;
				if (block.getDefaultState().getMaterial() == Material.WOOD)
					return 200;
				if (block == Blocks.COAL_BLOCK)
					return 14400;
			}

			if (item instanceof ItemTool && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item instanceof ItemSword && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item instanceof ItemHoe && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item == Items.STICK)
				return 50;
			if (item == Items.COAL)
				return 1600;
			if (item == Items.LAVA_BUCKET)
				return 20000;
			if (item == Item.getItemFromBlock(Blocks.SAPLING))
				return 70;
			if (item == Items.BLAZE_ROD)
				return 1600;

			return ForgeEventFactory.getItemBurnTime(fuel);
		}
	}

	public static boolean isItemFuel(ItemStack fuel) {
		return getItemBurnTime(fuel) > 0;
	}

	public boolean isUsableByPlayer(EntityPlayer player) {

		return world.getTileEntity(pos) != this ? false
				: player.getDistanceSq((double) pos.getX() + 0.5D, (double) pos.getY() + 0.5D,
						(double) pos.getZ() + 0.5D) <= 64.0D;
	}

	public boolean isItemValidForSlot(int index, ItemStack stack) {
		if (index == 2 || index == 3)
			return false;
		if (index != 1)
			return true;
		else {
			return isItemFuel(stack);
		}
	}

	public int getField(int id) {
		switch (id) {
		case 0:
			return burnTime;
		case 1:
			return currentBurnTime;
		case 2:
			return cookTime;
		case 3:
			return totalCookTime;
		default:
			return 0;
		}
	}

	public void setField(int id, int value) {
		switch (id) {
		case 0:
			burnTime = value;
			break;
		case 1:
			currentBurnTime = value;
			break;
		case 2:
			cookTime = value;
			break;
		case 3:
			totalCookTime = value;
		}
	}
}

I made constants and removed hard-coding on readFromNBT and writeToNBT.

Edited June 23, 2019 by hyper1423

DavidM · June 23, 2019

It seems like you are following HarryTalks’ tutorials. Stop.

His tutorials are terrible as they use outdated code and promote bad practices.

hyper1423 · June 23, 2019

4 minutes ago, DavidM said:

It seems like you are following HarryTalks’ tutorials. Stop.

His tutorials are terrible as they use outdated code and promote bad practices.

Should I rewrite the whole code?

Draco18s · June 23, 2019

1 hour ago, hyper1423 said:

Should I override it like this?

Reveal hidden contents



	@Override
	public boolean hasTileEntity() {
		// TODO Auto-generated method stub
		return super.hasTileEntity(this.getDefaultState());
	}
	
	@Override
	public TileEntity createTileEntity(World world, IBlockState state) {
		// TODO Auto-generated method stub
		return super.createTileEntity(world, state);
	}

No, because the super class does not return useful values. You need to return the correct values.

Quote

Are you saying to remove BlastFurnace.currentFuel?

Yes. Blocks cannot store data. Block classes are singleton instances, meaning that the data is shared across all blocks of that type. That's why you have a TileEntity for per-location specific data.

Quote

What do you mean? Should I remove BlockBase class and add methods in the BlockBase class in each block classes?

Yes, essentially. There is already a "base block class" its called Block.

Quote

I changed TileEntity Like This:

Reveal hidden contents



package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import com.hyper1423.somestuff.init.ModItems;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraft.item.ItemHoe;
import net.minecraft.item.ItemStack;
import net.minecraft.item.ItemSword;
import net.minecraft.item.ItemTool;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.ITickable;
import net.minecraft.util.text.ITextComponent;
import net.minecraft.util.text.TextComponentString;
import net.minecraft.util.text.TextComponentTranslation;
import net.minecraftforge.common.capabilities.Capability;
import net.minecraftforge.event.ForgeEventFactory;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;
import net.minecraftforge.items.CapabilityItemHandler;
import net.minecraftforge.items.ItemStackHandler;

public class TileEntityBlastFurnace extends TileEntity implements ITickable {

	private ItemStackHandler inventory = new ItemStackHandler(4);
	private String customname;
	private ItemStack smelting = ItemStack.EMPTY;
	
	private final String[] nbtTags = { "BurnTime", "CookTime", "CookTimeTotal" };
	private final String inventoryKey = "inventory";

	private int burnTime = 0;
	private int currentBurnTime = 0;
	private int cookTime = 0;
	private int totalCookTime = 600;

	@Override
	public boolean hasCapability(Capability<?> capability, EnumFacing facing) {
		// TODO Auto-generated method stub
		if (capability == CapabilityItemHandler.ITEM_HANDLER_CAPABILITY)
			return true;
		else
			return false;
	}

	@Override
	public <T> T getCapability(Capability<T> capability, EnumFacing facing) {
		// TODO Auto-generated method stub
		if (hasCapability(capability, null))
			return (T) this.inventory;
		return super.getCapability(capability, facing);
	}

	public boolean hasCustomName() {

		return customname != null && !customname.isEmpty();
	}

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

	@Override
	public ITextComponent getDisplayName() {
		return this.hasCustomName() ? new TextComponentString(this.customname)
				: new TextComponentTranslation("container.blast_furnace");
	}

	@Override
	public void readFromNBT(NBTTagCompound compound) {

		super.readFromNBT(compound);
		this.inventory.deserializeNBT(compound.getCompoundTag(inventoryKey));
		burnTime = compound.getInteger(nbtTags[0]);
		cookTime = compound.getInteger(nbtTags[1]);
		totalCookTime = compound.getInteger(nbtTags[2]);
		currentBurnTime = getItemBurnTime((ItemStack) inventory.getStackInSlot(1));

		if (compound.hasKey("CustomName", 8))
			setCustomName(compound.getString("CustomName"));
	}

	@Override
	public NBTTagCompound writeToNBT(NBTTagCompound compound) {

		super.writeToNBT(compound);
		compound.setInteger(nbtTags[0], (short) burnTime);
		compound.setInteger(nbtTags[1], (short) cookTime);
		compound.setInteger(nbtTags[2], (short) totalCookTime);
		compound.setTag(inventoryKey, this.inventory.serializeNBT());

		if (hasCustomName())
			compound.setString("CustomName", customname);
		return compound;
	}

	public boolean isBurning() {
		return burnTime > 0;
	}

	@SideOnly(Side.CLIENT)
	public static boolean isBurning(TileEntityBlastFurnace te) {
		return te.getField(0) > 0;
	}

	@Override
	public void update() {

		if (isBurning()) {
			--burnTime;
			BlastFurnace.setState(true, world, pos);
		}
		ItemStack fuel = (ItemStack) inventory.getStackInSlot(1);

		if (isBurning() || !fuel.isEmpty() && !inventory.getStackInSlot(0).isEmpty()) {
			if (!isBurning() && canSmelt()) {
				burnTime = getItemBurnTime(fuel);
				currentBurnTime = burnTime;

				if (isBurning() && !fuel.isEmpty()) {
					Item item = fuel.getItem();
					fuel.shrink(1);

					if (fuel.isEmpty()) {
						ItemStack item1 = item.getContainerItem(fuel);
						inventory.setStackInSlot(1, item1);
					}
				}
			}

			if (isBurning() && canSmelt() && cookTime > 0) {
				cookTime++;

				if (cookTime == totalCookTime) {
					if (inventory.getStackInSlot(2).getCount() > 0) {
						inventory.getStackInSlot(2).grow(1);
					} else {
						inventory.insertItem(2, smelting, false);
					}

					if (inventory.getStackInSlot(3).getCount() > 0) {
						inventory.getStackInSlot(3).grow(1);
					} else {
						inventory.insertItem(3, new ItemStack(ModItems.SLUG, 1), false);
					}
				}

				smelting = ItemStack.EMPTY;
				cookTime = 0;
				return;
			}

//			} else if (!isBurning() && cookTime > 0) {
//				if (cookTime > getCookTime(inventory.getStackInSlot(1)) / 3)
//					cookTime = MathHelper.clamp(cookTime - 3, 0, totalCookTime);
//				else
//					MathHelper.clamp(cookTime - 2, 0, totalCookTime);
			else {
				if (this.canSmelt() && this.isBurning()) {
					ItemStack output = BlastFurnaceRecipes.getInstance().getResult(inventory.getStackInSlot(0));
					if (!output.isEmpty()) {
						smelting = output;
						cookTime++;
						inventory.getStackInSlot(0).shrink(1);
					}
				}
			}
		}
//			if (flag != isBurning()) {
//				flag1 = true;
//				BlastFurnace.setState(isBurning(), world, pos);
//			}
//		}
//		if (flag1) {
//			markDirty();
//		}
	}

	private boolean canSmelt() {
		if (((ItemStack) inventory.getStackInSlot(0)).isEmpty())
			return false;
		else {
			ItemStack result = BlastFurnaceRecipes.getInstance().getResult((ItemStack) inventory.getStackInSlot(0));
			if (result.isEmpty())
				return false;
			else {
				ItemStack output = (ItemStack) inventory.getStackInSlot(2);
				ItemStack slug = (ItemStack) inventory.getStackInSlot(3);
				if (output.isEmpty())
					return true;
				if (!output.isItemEqual(result))
					return false;
				int res1 = output.getCount() + result.getCount();
				int res2 = slug.getCount() + 1;
				return (res1 <= 64 && res1 <= output.getMaxStackSize())
						|| (res2 <= 64 && res2 <= slug.getMaxStackSize());
			}
		}
	}

	public static int getItemBurnTime(ItemStack fuel) {
		if (fuel.isEmpty())
			return 0;
		else {
			Item item = fuel.getItem();

			if (item instanceof ItemBlock && Block.getBlockFromItem(item) != Blocks.AIR) {
				Block block = Block.getBlockFromItem(item);

				if (block == Blocks.WOODEN_SLAB)
					return 100;
				if (block == Blocks.ACACIA_STAIRS || block == Blocks.OAK_STAIRS || block == Blocks.JUNGLE_STAIRS
						|| block == Blocks.BIRCH_STAIRS || block == Blocks.DARK_OAK_STAIRS
						|| block == Blocks.SPRUCE_STAIRS)
					return 150;
				if (block.getDefaultState().getMaterial() == Material.WOOD)
					return 200;
				if (block == Blocks.COAL_BLOCK)
					return 14400;
			}

			if (item instanceof ItemTool && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item instanceof ItemSword && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item instanceof ItemHoe && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item == Items.STICK)
				return 50;
			if (item == Items.COAL)
				return 1600;
			if (item == Items.LAVA_BUCKET)
				return 20000;
			if (item == Item.getItemFromBlock(Blocks.SAPLING))
				return 70;
			if (item == Items.BLAZE_ROD)
				return 1600;

			return ForgeEventFactory.getItemBurnTime(fuel);
		}
	}

	public static boolean isItemFuel(ItemStack fuel) {
		return getItemBurnTime(fuel) > 0;
	}

	public boolean isUsableByPlayer(EntityPlayer player) {

		return world.getTileEntity(pos) != this ? false
				: player.getDistanceSq((double) pos.getX() + 0.5D, (double) pos.getY() + 0.5D,
						(double) pos.getZ() + 0.5D) <= 64.0D;
	}

	public boolean isItemValidForSlot(int index, ItemStack stack) {
		if (index == 2 || index == 3)
			return false;
		if (index != 1)
			return true;
		else {
			return isItemFuel(stack);
		}
	}

	public int getField(int id) {
		switch (id) {
		case 0:
			return burnTime;
		case 1:
			return currentBurnTime;
		case 2:
			return cookTime;
		case 3:
			return totalCookTime;
		default:
			return 0;
		}
	}

	public void setField(int id, int value) {
		switch (id) {
		case 0:
			burnTime = value;
			break;
		case 1:
			currentBurnTime = value;
			break;
		case 2:
			cookTime = value;
			break;
		case 3:
			totalCookTime = value;
		}
	}
}

I made constants and removed hard-coding on readFromNBT and writeToNBT.

"CustomName" is still a hard-coded string. And also a bad name.

Edited June 23, 2019 by Draco18s

hyper1423 · June 23, 2019

7 minutes ago, Draco18s said:

"CustomName" is still a hard-coded string. And also a bad name.

Could you say some examples of better name?

DavidM · June 23, 2019

2 hours ago, hyper1423 said:

Should I rewrite the whole code?

Personally, I would say yes.

i.e. All the custom name part are completely not necessary, and the getField/setField with an id is pointless. use normal getters and setters instead.

hyper1423 · June 23, 2019

Changing code caused another problem. It does not open GUI.

Spoiler

[17:26:59] [Server thread/FATAL] [minecraft/MinecraftServer]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
   at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_172]
   at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_172]
   at net.minecraft.util.Util.runTask(Util.java:54) [Util.class:?]
   at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:798) [MinecraftServer.class:?]
   at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:743) [MinecraftServer.class:?]
   at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:192) [IntegratedServer.class:?]
   at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:592) [MinecraftServer.class:?]
   at java.lang.Thread.run(Unknown Source) [?:1.8.0_172]
Caused by: java.lang.NullPointerException
   at com.hyper1423.somestuff.blocks.machines.blastfurnace.ContainerBlastFurnace.<init>(ContainerBlastFurnace.java:25) ~[ContainerBlastFurnace.class:?]
   at com.hyper1423.somestuff.util.handlers.GuiHandler.getServerGuiElement(GuiHandler.java:20) ~[GuiHandler.class:?]
   at net.minecraftforge.fml.common.network.NetworkRegistry.getRemoteGuiContainer(NetworkRegistry.java:253) ~[NetworkRegistry.class:?]
   at net.minecraftforge.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:88) ~[FMLNetworkHandler.class:?]
   at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2809) ~[EntityPlayer.class:?]
   at com.hyper1423.somestuff.blocks.machines.blastfurnace.BlastFurnace.onBlockActivated(BlastFurnace.java:87) ~[BlastFurnace.class:?]
   at net.minecraft.server.management.PlayerInteractionManager.processRightClickBlock(PlayerInteractionManager.java:475) ~[PlayerInteractionManager.class:?]
   at net.minecraft.network.NetHandlerPlayServer.processTryUseItemOnBlock(NetHandlerPlayServer.java:769) ~[NetHandlerPlayServer.class:?]
   at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.processPacket(CPacketPlayerTryUseItemOnBlock.java:68) ~[CPacketPlayerTryUseItemOnBlock.class:?]
   at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.processPacket(CPacketPlayerTryUseItemOnBlock.java:13) ~[CPacketPlayerTryUseItemOnBlock.class:?]
   at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:21) ~[PacketThreadUtil$1.class:?]
   at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_172]
   at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_172]
   at net.minecraft.util.Util.runTask(Util.java:53) ~[Util.class:?]
   ... 5 more

These are the codes:

Block class:

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import java.util.Random;

import com.hyper1423.somestuff.Main;
import com.hyper1423.somestuff.init.ModBlocks;
import com.hyper1423.somestuff.init.ModItems;
import com.hyper1423.somestuff.util.IHasModel;
import com.hyper1423.somestuff.util.Reference;

import net.minecraft.block.Block;
import net.minecraft.block.BlockHorizontal;
import net.minecraft.block.SoundType;
import net.minecraft.block.material.Material;
import net.minecraft.block.properties.IProperty;
import net.minecraft.block.properties.PropertyBool;
import net.minecraft.block.properties.PropertyDirection;
import net.minecraft.block.state.BlockStateContainer;
import net.minecraft.block.state.IBlockState;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumBlockRenderType;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.EnumHand;
import net.minecraft.util.Mirror;
import net.minecraft.util.Rotation;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

public class BlastFurnace extends Block implements IHasModel {

	public static final PropertyDirection FACING = BlockHorizontal.FACING;
	public static final PropertyBool BURNING = PropertyBool.create("burning");
	
	public BlastFurnace(String name, Material material) {
		this(name, material, Main.someStuff);
	}

	public BlastFurnace(String name, Material material, CreativeTabs creativeTab) {
		super(material);
		setUnlocalizedName(name);
		setRegistryName(name);
		setCreativeTab(creativeTab);

		setSoundType(SoundType.ANVIL);
		setHardness(5.0f);
		setResistance(5.0f);
		setHarvestLevel("pickaxe", 1);
		setLightLevel(0.0f);
		// setLightOpacity(1);
		// setBlockUnbreakable();

		this.setDefaultState(
				this.blockState.getBaseState().withProperty(FACING, EnumFacing.NORTH).withProperty(BURNING, false));

		ModBlocks.BLOCKS.add(this);
		ModItems.ITEMS.add(new ItemBlock(this).setRegistryName(this.getRegistryName()));
	}

	@Override
	public void registerModels() {
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 0, "inventory");
	}

	@Override
	public Item getItemDropped(IBlockState state, Random rand, int fortune) {
		return Item.getItemFromBlock(ModBlocks.BLAST_FURNACE);

	}

	@Override
	public ItemStack getItem(World worldIn, BlockPos pos, IBlockState state) {
		return new ItemStack(ModBlocks.BLAST_FURNACE);

	}

	@Override
	public boolean onBlockActivated(World worldIn, BlockPos pos, IBlockState state, EntityPlayer playerIn,
			EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ) {

		if (!worldIn.isRemote) {
			playerIn.openGui(Main.instance, Reference.GUI_BLAST_FURNACE, worldIn, pos.getX(), pos.getY(), pos.getZ());
		}
		return true;
	}

	@Override
	public void onBlockAdded(World worldIn, BlockPos pos, IBlockState state) {
		// TODO Auto-generated method stub

		if (!worldIn.isRemote) {

			IBlockState north = worldIn.getBlockState(pos.north());
			IBlockState south = worldIn.getBlockState(pos.south());
			IBlockState west = worldIn.getBlockState(pos.west());
			IBlockState east = worldIn.getBlockState(pos.east());
			EnumFacing face = (EnumFacing) state.getValue(FACING);

			if (face == EnumFacing.NORTH)
				face = EnumFacing.SOUTH;
			if (face == EnumFacing.SOUTH)
				face = EnumFacing.NORTH;
			if (face == EnumFacing.WEST)
				face = EnumFacing.EAST;
			if (face == EnumFacing.EAST)
				face = EnumFacing.WEST;
			worldIn.setBlockState(pos, state.withProperty(FACING, face), 2);
		}
	}

	public static void setState(boolean active, World worldIn, BlockPos pos) {
		IBlockState state = worldIn.getBlockState(pos);
		TileEntity tileentity = worldIn.getTileEntity(pos);

		if (active)
			worldIn.setBlockState(pos, ModBlocks.BLAST_FURNACE.getDefaultState()
					.withProperty(FACING, state.getValue(FACING)).withProperty(BURNING, true), 1 | 2);
		else
			worldIn.setBlockState(pos, ModBlocks.BLAST_FURNACE.getDefaultState()
					.withProperty(FACING, state.getValue(FACING)).withProperty(BURNING, false), 1 | 2);

		if (tileentity != null) {
			tileentity.validate();
			worldIn.setTileEntity(pos, tileentity);
		}
	}

	@Override
	public IBlockState getStateForPlacement(World world, BlockPos pos, EnumFacing facing, float hitX, float hitY,
			float hitZ, int meta, EntityLivingBase placer, EnumHand hand) {
		// TODO Auto-generated method stub
		return this.getDefaultState().withProperty(FACING, placer.getHorizontalFacing().getOpposite());
	}

	@Override
	public void onBlockPlacedBy(World worldIn, BlockPos pos, IBlockState state, EntityLivingBase placer,
			ItemStack stack) {
		// TODO Auto-generated method stub
		worldIn.setBlockState(pos,
				this.getDefaultState().withProperty(FACING, placer.getHorizontalFacing().getOpposite()), 2);
	}

	@Override
	public EnumBlockRenderType getRenderType(IBlockState state) {
		// TODO Auto-generated method stub
		return EnumBlockRenderType.MODEL;
	}

	@Override
	public IBlockState withRotation(IBlockState state, Rotation rot) {
		// TODO Auto-generated method stub
		return state.withProperty(FACING, rot.rotate((EnumFacing) state.getValue(FACING)));
	}

	@Override
	public IBlockState withMirror(IBlockState state, Mirror mirrorIn) {
		// TODO Auto-generated method stub
		return state.withRotation(mirrorIn.toRotation((EnumFacing) state.getValue(FACING)));
	}

	@Override
	protected BlockStateContainer createBlockState() {
		// TODO Auto-generated method stub
		return new BlockStateContainer(this, new IProperty[] { BURNING, FACING });
	}

	@Override
	public IBlockState getStateFromMeta(int meta) {
		// TODO Auto-generated method stub
		EnumFacing facing = EnumFacing.getFront(meta);
		if (facing.getAxis() == EnumFacing.Axis.Y)
			facing = EnumFacing.NORTH;
		return this.getDefaultState().withProperty(FACING, facing);
	}

	@Override
	public int getMetaFromState(IBlockState state) {
		// TODO Auto-generated method stub
		return ((EnumFacing) state.getValue(FACING)).getIndex();
	}

	@Override
	public boolean hasTileEntity() {
		// TODO Auto-generated method stub
		return this.hasTileEntity;
	}

	@Override
	public TileEntity createTileEntity(World world, IBlockState state) {
		// TODO Auto-generated method stub
		return new TileEntityBlastFurnace();
	}
}

TileEntity class:

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import javax.annotation.Nullable;

import com.hyper1423.somestuff.init.ModItems;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraft.item.ItemHoe;
import net.minecraft.item.ItemStack;
import net.minecraft.item.ItemSword;
import net.minecraft.item.ItemTool;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.ITickable;
import net.minecraft.util.text.ITextComponent;
import net.minecraft.util.text.TextComponentString;
import net.minecraft.util.text.TextComponentTranslation;
import net.minecraftforge.common.capabilities.Capability;
import net.minecraftforge.event.ForgeEventFactory;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;
import net.minecraftforge.items.CapabilityItemHandler;
import net.minecraftforge.items.ItemStackHandler;

public class TileEntityBlastFurnace extends TileEntity implements ITickable {

	private ItemStackHandler inventory = new ItemStackHandler(4);
	private String customName;
	private ItemStack smelting = ItemStack.EMPTY;
	
	private final String[] nbtTags = { "BurnTime", "CookTime", "CookTimeTotal" };
	private final String inventoryKey = "inventory";
	private final String customNameKey = "CustomName";

	public int burnTime = 0;
	public int currentBurnTime = 0;
	public int cookTime = 0;
	public int totalCookTime = 600;

	public boolean hasCustomName() {

		return customName != null && !customName.isEmpty();
	}

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

	@Override
	public ITextComponent getDisplayName() {
		return this.hasCustomName() ? new TextComponentString(this.customName)
				: new TextComponentTranslation("container.blast_furnace");
	}

	@Override
	public void readFromNBT(NBTTagCompound compound) {

		super.readFromNBT(compound);
		this.inventory.deserializeNBT(compound.getCompoundTag(inventoryKey));
		burnTime = compound.getInteger(nbtTags[0]);
		cookTime = compound.getInteger(nbtTags[1]);
		totalCookTime = compound.getInteger(nbtTags[2]);
		currentBurnTime = getItemBurnTime((ItemStack) inventory.getStackInSlot(1));

		if (compound.hasKey(customNameKey, 8))
			setCustomName(compound.getString(customNameKey));
	}

	@Override
	public NBTTagCompound writeToNBT(NBTTagCompound compound) {

		super.writeToNBT(compound);
		compound.setInteger(nbtTags[0], (short) burnTime);
		compound.setInteger(nbtTags[1], (short) cookTime);
		compound.setInteger(nbtTags[2], (short) totalCookTime);
		compound.setTag(inventoryKey, this.inventory.serializeNBT());

		if (hasCustomName())
			compound.setString(customNameKey, customName);
		return compound;
	}

	public boolean isBurning() {
		return burnTime > 0;
	}

	@SideOnly(Side.CLIENT)
	public static boolean isBurning(TileEntityBlastFurnace te) {
		return te.burnTime > 0;
	}

	@Override
	public void update() {

		if (isBurning()) {
			--burnTime;
			BlastFurnace.setState(true, world, pos);
		}
		ItemStack fuel = (ItemStack) inventory.getStackInSlot(1);

		if (isBurning() || !fuel.isEmpty() && !inventory.getStackInSlot(0).isEmpty()) {
			if (!isBurning() && canSmelt()) {
				burnTime = getItemBurnTime(fuel);
				currentBurnTime = burnTime;

				if (isBurning() && !fuel.isEmpty()) {
					Item item = fuel.getItem();
					fuel.shrink(1);

					if (fuel.isEmpty()) {
						ItemStack item1 = item.getContainerItem(fuel);
						inventory.setStackInSlot(1, item1);
					}
				}
			}

			if (isBurning() && canSmelt() && cookTime > 0) {
				cookTime++;

				if (cookTime == totalCookTime) {
					if (inventory.getStackInSlot(2).getCount() > 0) {
						inventory.getStackInSlot(2).grow(1);
					} else {
						inventory.insertItem(2, smelting, false);
					}

					if (inventory.getStackInSlot(3).getCount() > 0) {
						inventory.getStackInSlot(3).grow(1);
					} else {
						inventory.insertItem(3, new ItemStack(ModItems.SLUG, 1), false);
					}
				}

				smelting = ItemStack.EMPTY;
				cookTime = 0;
				return;
			}

//			} else if (!isBurning() && cookTime > 0) {
//				if (cookTime > getCookTime(inventory.getStackInSlot(1)) / 3)
//					cookTime = MathHelper.clamp(cookTime - 3, 0, totalCookTime);
//				else
//					MathHelper.clamp(cookTime - 2, 0, totalCookTime);
			else {
				if (this.canSmelt() && this.isBurning()) {
					ItemStack output = BlastFurnaceRecipes.getInstance().getResult(inventory.getStackInSlot(0));
					if (!output.isEmpty()) {
						smelting = output;
						cookTime++;
						inventory.getStackInSlot(0).shrink(1);
					}
				}
			}
		}
//			if (flag != isBurning()) {
//				flag1 = true;
//				BlastFurnace.setState(isBurning(), world, pos);
//			}
//		}
//		if (flag1) {
//			markDirty();
//		}
	}

	private boolean canSmelt() {
		if (((ItemStack) inventory.getStackInSlot(0)).isEmpty())
			return false;
		else {
			ItemStack result = BlastFurnaceRecipes.getInstance().getResult((ItemStack) inventory.getStackInSlot(0));
			if (result.isEmpty())
				return false;
			else {
				ItemStack output = (ItemStack) inventory.getStackInSlot(2);
				ItemStack slug = (ItemStack) inventory.getStackInSlot(3);
				if (output.isEmpty())
					return true;
				if (!output.isItemEqual(result))
					return false;
				int res1 = output.getCount() + result.getCount();
				int res2 = slug.getCount() + 1;
				return (res1 <= 64 && res1 <= output.getMaxStackSize())
						|| (res2 <= 64 && res2 <= slug.getMaxStackSize());
			}
		}
	}

	public static int getItemBurnTime(ItemStack fuel) {
		if (fuel.isEmpty())
			return 0;
		else {
			Item item = fuel.getItem();

			if (item instanceof ItemBlock && Block.getBlockFromItem(item) != Blocks.AIR) {
				Block block = Block.getBlockFromItem(item);

				if (block == Blocks.WOODEN_SLAB)
					return 100;
				if (block == Blocks.ACACIA_STAIRS || block == Blocks.OAK_STAIRS || block == Blocks.JUNGLE_STAIRS
						|| block == Blocks.BIRCH_STAIRS || block == Blocks.DARK_OAK_STAIRS
						|| block == Blocks.SPRUCE_STAIRS)
					return 150;
				if (block.getDefaultState().getMaterial() == Material.WOOD)
					return 200;
				if (block == Blocks.COAL_BLOCK)
					return 14400;
			}

			if (item instanceof ItemTool && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item instanceof ItemSword && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item instanceof ItemHoe && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item == Items.STICK)
				return 50;
			if (item == Items.COAL)
				return 1600;
			if (item == Items.LAVA_BUCKET)
				return 20000;
			if (item == Item.getItemFromBlock(Blocks.SAPLING))
				return 70;
			if (item == Items.BLAZE_ROD)
				return 1600;

			return ForgeEventFactory.getItemBurnTime(fuel);
		}
	}

	public static boolean isItemFuel(ItemStack fuel) {
		return getItemBurnTime(fuel) > 0;
	}

	public boolean isUsableByPlayer(EntityPlayer player) {

		return world.getTileEntity(pos) != this ? false
				: player.getDistanceSq((double) pos.getX() + 0.5D, (double) pos.getY() + 0.5D,
						(double) pos.getZ() + 0.5D) <= 64.0D;
	}

	public boolean isItemValidForSlot(int index, ItemStack stack) {
		if (index == 2 || index == 3)
			return false;
		if (index != 1)
			return true;
		else {
			return isItemFuel(stack);
		}
	}
}

Recipe class:

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import java.util.Map;
import java.util.Map.Entry;

import com.google.common.collect.Maps;
import com.hyper1423.somestuff.init.ModItems;

import net.minecraft.init.Blocks;
import net.minecraft.item.ItemStack;

public class BlastFurnaceRecipes {
	private static final BlastFurnaceRecipes INSTANCE = new BlastFurnaceRecipes();
	private final Map<ItemStack, ItemStack> smeltingList = Maps.<ItemStack, ItemStack>newHashMap();
	private final Map<ItemStack, Float> experienceList = Maps.<ItemStack, Float>newHashMap();

	public static BlastFurnaceRecipes getInstance() {
		return INSTANCE;
	}

	private BlastFurnaceRecipes() {
		addRecipe(new ItemStack(Blocks.ACACIA_FENCE),
				new ItemStack(ModItems.SLUG), 5.0F);
	}

	public void addRecipe(ItemStack input, ItemStack result, float experience) {
		if (getResult(input) != ItemStack.EMPTY)
			return;
		this.smeltingList.put(input, result);
		this.experienceList.put(result, Float.valueOf(experience));
	}

	public ItemStack getResult(ItemStack input) {
		for (Entry<ItemStack, ItemStack> entry : this.smeltingList.entrySet()) {
			if (this.compareItemStacks(input, (ItemStack) entry.getKey())) {
				return (ItemStack) entry.getValue();
			}
		}
		return ItemStack.EMPTY;
	}

	private boolean compareItemStacks(ItemStack stack1, ItemStack stack2) {
		return stack2.getItem() == stack1.getItem()
				&& (stack2.getMetadata() == 32767 || stack2.getMetadata() == stack1.getMetadata());
	}

	public Map<ItemStack, ItemStack> getDualSmeltingList() {
		return this.smeltingList;
	}

	public float getResultExperience(ItemStack stack) {
		for (Entry<ItemStack, Float> entry : this.experienceList.entrySet()) {
			if (this.compareItemStacks(stack, (ItemStack) entry.getKey())) {
				return ((Float) entry.getValue()).floatValue();
			}
		}
		return 0.0F;
	}
}

GUI class:

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import com.hyper1423.somestuff.util.Reference;

import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.util.ResourceLocation;

public class GuiBlastFurnace extends GuiContainer {

	private static final ResourceLocation TEXTURES = new ResourceLocation(Reference.MOD_ID,
			"textures/gui/blast_furnace.png");
	private final InventoryPlayer player;
	private final TileEntityBlastFurnace tileentity;

	public GuiBlastFurnace(InventoryPlayer player, TileEntityBlastFurnace tileentity) {
		super(new ContainerBlastFurnace(player, tileentity));
		this.player = player;
		this.tileentity = tileentity;
		// TODO Auto-generated constructor stub
	}

	@Override
	protected void drawGuiContainerForegroundLayer(int mouseX, int mouseY) {
		// TODO Auto-generated method stub
		if (this.tileentity.getDisplayName() != null) {
			String tileName = this.tileentity.getDisplayName().getUnformattedText();
			this.fontRenderer.drawString(tileName,
					(this.xSize / 2 - this.fontRenderer.getStringWidth(tileName) / 2) + 3, 8, 0x404040);
			this.fontRenderer.drawString(this.player.getDisplayName().getUnformattedText(), 8, this.ySize - 96 + 2,
					0x404040);
		}
	}

	@Override
	protected void drawGuiContainerBackgroundLayer(float partialTicks, int mouseX, int mouseY) {
		GlStateManager.color(1.0f, 1.0f, 1.0f, 1.0f);
		this.mc.getTextureManager().bindTexture(TEXTURES);
		this.drawTexturedModalRect(this.guiLeft, this.guiTop, 0, 0, this.xSize, this.ySize);

		if (TileEntityBlastFurnace.isBurning(tileentity)) {
			int k = this.getBurnLeftScaled(13);
			this.drawTexturedModalRect(this.guiLeft + 36, this.guiTop + 37 + 12 - k, 176, 12 - k, 14, k + 1);
		}

		int l = this.getCookProgressScaled(24);
		this.drawTexturedModalRect(this.guiLeft + 58, this.guiTop + 35, 176, 14, l + 1, 16);
	}

	private int getBurnLeftScaled(int pixels) {
		int i = this.tileentity.currentBurnTime;
		int j = this.tileentity.burnTime;
		if (i == 0)
			i = 200;
		return j * pixels / i;
	}

	private int getCookProgressScaled(int pixels) {
		int i = this.tileentity.cookTime;
		int j = this.tileentity.totalCookTime;
		return j != 0 && i != 0 ? i * pixels / j : 0;
	}
}

And container class:

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import com.hyper1423.somestuff.blocks.machines.blastfurnace.slots.SlotBlastFurnaceFuel;
import com.hyper1423.somestuff.blocks.machines.blastfurnace.slots.SlotBlastFurnaceOutput;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.IContainerListener;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;
import net.minecraftforge.items.CapabilityItemHandler;
import net.minecraftforge.items.IItemHandler;
import net.minecraftforge.items.SlotItemHandler;

public class ContainerBlastFurnace extends Container {

	private final TileEntityBlastFurnace tileentity;
	private int cookTime, totalCookTime, burnTime, currentBurnTime;

	public ContainerBlastFurnace(InventoryPlayer player, TileEntityBlastFurnace tileentity) {
		this.tileentity = tileentity;
		IItemHandler inventory = tileentity.getCapability(CapabilityItemHandler.ITEM_HANDLER_CAPABILITY, null);

		this.addSlotToContainer(new SlotItemHandler(inventory, 0, 35, 17));
		this.addSlotToContainer(new SlotBlastFurnaceFuel(inventory, 1, 35, 53));
		this.addSlotToContainer(new SlotBlastFurnaceOutput(player.player, inventory, 2, 95, 35));
		this.addSlotToContainer(new SlotBlastFurnaceOutput(player.player, inventory, 3, 143, 53));

		for (int y = 0; y < 3; y++) {
			for (int x = 0; x < 9; x++) {
				this.addSlotToContainer(new Slot(player, x + y * 9 + 9, 8 + x * 18, 84 + y * 18));
			}
		}

		for (int x = 0; x < 9; x++) {
			this.addSlotToContainer(new Slot(player, x, 8 + x * 18, 142));
		}
	}

	@Override
	public void detectAndSendChanges() {
		// TODO Auto-generated method stub
		super.detectAndSendChanges();

		for (int i = 0; i < this.listeners.size(); ++i) {
			IContainerListener listener = (IContainerListener) this.listeners.get(i);

			if (this.burnTime != this.tileentity.burnTime)
				listener.sendWindowProperty(this, 0, this.tileentity.burnTime);
			if (this.currentBurnTime != this.tileentity.currentBurnTime)
				listener.sendWindowProperty(this, 1, this.tileentity.currentBurnTime);
			if (this.cookTime != this.tileentity.cookTime)
				listener.sendWindowProperty(this, 2, this.tileentity.cookTime);
			if (this.totalCookTime != this.tileentity.totalCookTime)
				listener.sendWindowProperty(this, 3, this.tileentity.totalCookTime);
		}

		this.burnTime = this.tileentity.burnTime;
		this.currentBurnTime = this.tileentity.currentBurnTime;
		this.cookTime = this.tileentity.cookTime;
		this.totalCookTime = this.tileentity.totalCookTime;
	}

	@Override
	@SideOnly(Side.CLIENT)
	public void updateProgressBar(int id, int data) {
		// TODO Auto-generated method stub
		switch (id) {
		case 0:
			this.tileentity.burnTime = data;
			break;
		case 1:
			this.tileentity.currentBurnTime = data;
			break;
		case 2:
			this.tileentity.cookTime = data;
			break;
		case 3:
			this.tileentity.totalCookTime = data;
			break;
		}
	}

	@Override
	public boolean canInteractWith(EntityPlayer playerIn) {
		// TODO Auto-generated method stub
		return this.tileentity.isUsableByPlayer(playerIn);
	}

	@Override
	public ItemStack transferStackInSlot(EntityPlayer playerIn, int index) {
		ItemStack stack = ItemStack.EMPTY;
		Slot slot = (Slot) this.inventorySlots.get(index);

		if (slot != null && slot.getHasStack()) {
			ItemStack stack1 = slot.getStack();
			stack = stack1.copy();

			if (index == 2 || index == 3) {
				if (!this.mergeItemStack(stack1, 4, 40, true))
					return ItemStack.EMPTY;
				slot.onSlotChange(stack1, stack);
			} else if (index != 1 && index != 0) {
				if (!BlastFurnaceRecipes.getInstance().getResult(stack1).isEmpty()) {
					if (!this.mergeItemStack(stack1, 0, 1, false)) {
						return ItemStack.EMPTY;
					} else if (TileEntityBlastFurnace.isItemFuel(stack1)) {
						if (!this.mergeItemStack(stack1, 1, 2, false))
							return ItemStack.EMPTY;
					} else if (TileEntityBlastFurnace.isItemFuel(stack1)) {
						if (!this.mergeItemStack(stack1, 1, 2, false))
							return ItemStack.EMPTY;
					} else if (TileEntityBlastFurnace.isItemFuel(stack1)) {
						if (!this.mergeItemStack(stack1, 1, 2, false))
							return ItemStack.EMPTY;
					} else if (index >= 4 && index < 31) {
						if (!this.mergeItemStack(stack1, 31, 40, false))
							return ItemStack.EMPTY;
					} else if (index >= 31 && index < 40 && !this.mergeItemStack(stack1, 4, 31, false)) {
						return ItemStack.EMPTY;
					}
				}
			} else if (!this.mergeItemStack(stack1, 4, 40, false)) {
				return ItemStack.EMPTY;
			}
			if (stack1.isEmpty()) {
				slot.putStack(ItemStack.EMPTY);
			} else {
				slot.onSlotChanged();

			}
			if (stack1.getCount() == stack.getCount())
				return ItemStack.EMPTY;
			slot.onTake(playerIn, stack1);
		}
		return stack;
	}

}

Slots are not changed.

Also, when I shift-rightclick on the blast furnace, it just change its direction and no block is added.

Spoiler

I placed blast furnace blocks.I shift-right-clicked the block with a blast furnace item.

It changes its direction.

hyper1423 · June 27, 2019

On 6/23/2019 at 8:51 PM, diesieben07 said:

This will always return null, since your TE does not expose the ITEM_HANDLER_CAPABILITY.

How do I expose ITEM_HANDLER_CAPABILITY? I tried to expose it as the way in the official forge tutorial, but it doesn't work.

TileEntity:

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import com.hyper1423.somestuff.init.ModItems;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraft.item.ItemHoe;
import net.minecraft.item.ItemStack;
import net.minecraft.item.ItemSword;
import net.minecraft.item.ItemTool;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.ITickable;
import net.minecraft.util.NonNullList;
import net.minecraft.util.text.ITextComponent;
import net.minecraft.util.text.TextComponentString;
import net.minecraft.util.text.TextComponentTranslation;
import net.minecraftforge.common.capabilities.Capability;
import net.minecraftforge.event.ForgeEventFactory;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;
import net.minecraftforge.items.CapabilityItemHandler;
import net.minecraftforge.items.ItemStackHandler;

public class TileEntityBlastFurnace extends TileEntity implements ITickable {

	private ItemStackHandler inventory = new ItemStackHandler(NonNullList.withSize(4, ItemStack.EMPTY));
	private String customName;
	private ItemStack smelting = ItemStack.EMPTY;

	private static final String BURNTIME_KEY = "BurnTime";
	private static final String COOKTIME_KEY = "CookTime";
	private static final String COOKTIMETOTAL_KEY = "CookTimeTotal";

	private static final String INVENTORY_KEY = "inventory";
	private static final String CUSTOMNAME_KEY = "CustomName";

	public int burnTime = 0;
	public int currentBurnTime = 0;
	public int cookTime = 0;
	public int totalCookTime = 600;

	@Override
	public boolean hasCapability(Capability<?> capability, EnumFacing facing) {
		// TODO Auto-generated method stub
		if (capability == CapabilityItemHandler.ITEM_HANDLER_CAPABILITY)
			return true;
		return super.hasCapability(capability, facing);
	}
	
	@Override
	public <T> T getCapability(Capability<T> capability, EnumFacing facing) {
		// TODO Auto-generated method stub
		if (capability == CapabilityItemHandler.ITEM_HANDLER_CAPABILITY)
			return (T) this.inventory;
		return super.getCapability(capability, facing);
	}

	public boolean hasCustomName() {

		return customName != null && !customName.isEmpty();
	}

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

	@Override
	public ITextComponent getDisplayName() {
		return this.hasCustomName() ? new TextComponentString(this.customName)
				: new TextComponentTranslation("container.blast_furnace");
	}

	@Override
	public void readFromNBT(NBTTagCompound compound) {

		super.readFromNBT(compound);
		this.inventory.deserializeNBT(compound.getCompoundTag(INVENTORY_KEY));
		burnTime = compound.getInteger(BURNTIME_KEY);
		cookTime = compound.getInteger(COOKTIME_KEY);
		totalCookTime = compound.getInteger(COOKTIMETOTAL_KEY);
		currentBurnTime = getItemBurnTime((ItemStack) inventory.getStackInSlot(1));

		if (compound.hasKey(CUSTOMNAME_KEY, 8))
			setCustomName(compound.getString(CUSTOMNAME_KEY));
	}

	@Override
	public NBTTagCompound writeToNBT(NBTTagCompound compound) {

		super.writeToNBT(compound);
		compound.setInteger(BURNTIME_KEY, (short) burnTime);
		compound.setInteger(COOKTIME_KEY, (short) cookTime);
		compound.setInteger(COOKTIMETOTAL_KEY, (short) totalCookTime);
		compound.setTag(INVENTORY_KEY, this.inventory.serializeNBT());

		if (hasCustomName())
			compound.setString(CUSTOMNAME_KEY, customName);
		return compound;
	}

	public boolean isBurning() {
		return burnTime > 0;
	}

	@SideOnly(Side.CLIENT)
	public static boolean isBurning(TileEntityBlastFurnace te) {
		return te.burnTime > 0;
	}

	@Override
	public void update() {

		if (isBurning()) {
			--burnTime;
			BlastFurnace.setState(true, world, pos);
		}
		ItemStack fuel = (ItemStack) inventory.getStackInSlot(1);

		if (isBurning() || !fuel.isEmpty() && !inventory.getStackInSlot(0).isEmpty()) {
			if (!isBurning() && canSmelt()) {
				burnTime = getItemBurnTime(fuel);
				currentBurnTime = burnTime;

				if (isBurning() && !fuel.isEmpty()) {
					Item item = fuel.getItem();
					fuel.shrink(1);

					if (fuel.isEmpty()) {
						ItemStack item1 = item.getContainerItem(fuel);
						inventory.setStackInSlot(1, item1);
					}
				}
			}

			if (isBurning() && canSmelt() && cookTime > 0) {
				cookTime++;

				if (cookTime == totalCookTime) {
					if (inventory.getStackInSlot(2).getCount() > 0) {
						inventory.getStackInSlot(2).grow(1);
					} else {
						inventory.insertItem(2, smelting, false);
					}

					if (inventory.getStackInSlot(3).getCount() > 0) {
						inventory.getStackInSlot(3).grow(1);
					} else {
						inventory.insertItem(3, new ItemStack(ModItems.SLUG, 1), false);
					}
				}

				smelting = ItemStack.EMPTY;
				cookTime = 0;
				return;
			}

//			} else if (!isBurning() && cookTime > 0) {
//				if (cookTime > getCookTime(inventory.getStackInSlot(1)) / 3)
//					cookTime = MathHelper.clamp(cookTime - 3, 0, totalCookTime);
//				else
//					MathHelper.clamp(cookTime - 2, 0, totalCookTime);
			else {
				if (this.canSmelt() && this.isBurning()) {
					ItemStack output = BlastFurnaceRecipes.getInstance().getResult(inventory.getStackInSlot(0));
					if (!output.isEmpty()) {
						smelting = output;
						cookTime++;
						inventory.getStackInSlot(0).shrink(1);
					}
				}
			}
		}
//			if (flag != isBurning()) {
//				flag1 = true;
//				BlastFurnace.setState(isBurning(), world, pos);
//			}
//		}
//		if (flag1) {
//			markDirty();
//		}
	}

	private boolean canSmelt() {
		if (((ItemStack) inventory.getStackInSlot(0)).isEmpty())
			return false;
		else {
			ItemStack result = BlastFurnaceRecipes.getInstance().getResult((ItemStack) inventory.getStackInSlot(0));
			if (result.isEmpty())
				return false;
			else {
				ItemStack output = (ItemStack) inventory.getStackInSlot(2);
				ItemStack slug = (ItemStack) inventory.getStackInSlot(3);
				if (output.isEmpty())
					return true;
				if (!output.isItemEqual(result))
					return false;
				int res1 = output.getCount() + result.getCount();
				int res2 = slug.getCount() + 1;
				return (res1 <= 64 && res1 <= output.getMaxStackSize())
						|| (res2 <= 64 && res2 <= slug.getMaxStackSize());
			}
		}
	}

	public static int getItemBurnTime(ItemStack fuel) {
		if (fuel.isEmpty())
			return 0;
		else {
			Item item = fuel.getItem();

			if (item instanceof ItemBlock && Block.getBlockFromItem(item) != Blocks.AIR) {
				Block block = Block.getBlockFromItem(item);

				if (block == Blocks.WOODEN_SLAB)
					return 100;
				if (block == Blocks.ACACIA_STAIRS || block == Blocks.OAK_STAIRS || block == Blocks.JUNGLE_STAIRS
						|| block == Blocks.BIRCH_STAIRS || block == Blocks.DARK_OAK_STAIRS
						|| block == Blocks.SPRUCE_STAIRS)
					return 150;
				if (block.getDefaultState().getMaterial() == Material.WOOD)
					return 200;
				if (block == Blocks.COAL_BLOCK)
					return 14400;
			}

			if (item instanceof ItemTool && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item instanceof ItemSword && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item instanceof ItemHoe && "WOOD".contentEquals(((ItemTool) item).getToolMaterialName()))
				return 180;
			if (item == Items.STICK)
				return 50;
			if (item == Items.COAL)
				return 1600;
			if (item == Items.LAVA_BUCKET)
				return 20000;
			if (item == Item.getItemFromBlock(Blocks.SAPLING))
				return 70;
			if (item == Items.BLAZE_ROD)
				return 1600;

			return ForgeEventFactory.getItemBurnTime(fuel);
		}
	}

	public static boolean isItemFuel(ItemStack fuel) {
		return getItemBurnTime(fuel) > 0;
	}

	public boolean isUsableByPlayer(EntityPlayer player) {

		return world.getTileEntity(pos) != this ? false
				: player.getDistanceSq((double) pos.getX() + 0.5D, (double) pos.getY() + 0.5D,
						(double) pos.getZ() + 0.5D) <= 64.0D;
	}

	public boolean isItemValidForSlot(int index, ItemStack stack) {
		if (index == 2 || index == 3)
			return false;
		if (index != 1)
			return true;
		else {
			return isItemFuel(stack);
		}
	}
}

Block:

Spoiler


package com.hyper1423.somestuff.blocks.machines.blastfurnace;

import java.util.Random;

import com.hyper1423.somestuff.Main;
import com.hyper1423.somestuff.init.ModBlocks;
import com.hyper1423.somestuff.init.ModItems;
import com.hyper1423.somestuff.util.Reference;

import net.minecraft.block.Block;
import net.minecraft.block.BlockHorizontal;
import net.minecraft.block.SoundType;
import net.minecraft.block.material.Material;
import net.minecraft.block.properties.IProperty;
import net.minecraft.block.properties.PropertyBool;
import net.minecraft.block.properties.PropertyDirection;
import net.minecraft.block.state.BlockStateContainer;
import net.minecraft.block.state.IBlockState;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraft.item.ItemStack;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.EnumBlockRenderType;
import net.minecraft.util.EnumFacing;
import net.minecraft.util.EnumHand;
import net.minecraft.util.Mirror;
import net.minecraft.util.Rotation;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;

public class BlastFurnace extends Block {

	public static final PropertyDirection FACING = BlockHorizontal.FACING;
	public static final PropertyBool BURNING = PropertyBool.create("burning");
	
	public BlastFurnace(String name, Material material) {
		this(name, material, Main.someStuff);
	}

	public BlastFurnace(String name, Material material, CreativeTabs creativeTab) {
		super(material);
		setUnlocalizedName(name);
		setRegistryName(name);
		setCreativeTab(creativeTab);

		setSoundType(SoundType.ANVIL);
		setHardness(5.0f);
		setResistance(5.0f);
		setHarvestLevel("pickaxe", 1);
		setLightLevel(0.0f);
		// setLightOpacity(1);
		// setBlockUnbreakable();

		this.setDefaultState(
				this.blockState.getBaseState().withProperty(FACING, EnumFacing.NORTH).withProperty(BURNING, false));

		ModBlocks.BLOCKS.add(this);
		ModItems.ITEMS.add(new ItemBlock(this).setRegistryName(this.getRegistryName()));
	}

	public void registerModels() {
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 0, "inventory");
	}

	@Override
	public Item getItemDropped(IBlockState state, Random rand, int fortune) {
		return Item.getItemFromBlock(ModBlocks.BLAST_FURNACE);

	}

	@Override
	public ItemStack getItem(World worldIn, BlockPos pos, IBlockState state) {
		return new ItemStack(ModBlocks.BLAST_FURNACE);

	}

	@Override
	public boolean onBlockActivated(World worldIn, BlockPos pos, IBlockState state, EntityPlayer playerIn,
			EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ) {

		if (!worldIn.isRemote) {
			playerIn.openGui(Main.instance, Reference.GUI_BLAST_FURNACE, worldIn, pos.getX(), pos.getY(), pos.getZ());
		}
		return true;
	}

	@Override
	public void onBlockAdded(World worldIn, BlockPos pos, IBlockState state) {
		// TODO Auto-generated method stub

		if (!worldIn.isRemote) {

			IBlockState north = worldIn.getBlockState(pos.north());
			IBlockState south = worldIn.getBlockState(pos.south());
			IBlockState west = worldIn.getBlockState(pos.west());
			IBlockState east = worldIn.getBlockState(pos.east());
			EnumFacing face = (EnumFacing) state.getValue(FACING);

			if (face == EnumFacing.NORTH)
				face = EnumFacing.SOUTH;
			if (face == EnumFacing.SOUTH)
				face = EnumFacing.NORTH;
			if (face == EnumFacing.WEST)
				face = EnumFacing.EAST;
			if (face == EnumFacing.EAST)
				face = EnumFacing.WEST;
			worldIn.setBlockState(pos, state.withProperty(FACING, face), 2);
		}
	}

	public static void setState(boolean active, World worldIn, BlockPos pos) {
		IBlockState state = worldIn.getBlockState(pos);
		TileEntity tileentity = worldIn.getTileEntity(pos);

		if (active)
			worldIn.setBlockState(pos, ModBlocks.BLAST_FURNACE.getDefaultState()
					.withProperty(FACING, state.getValue(FACING)).withProperty(BURNING, true), 1 | 2);
		else
			worldIn.setBlockState(pos, ModBlocks.BLAST_FURNACE.getDefaultState()
					.withProperty(FACING, state.getValue(FACING)).withProperty(BURNING, false), 1 | 2);

		if (tileentity != null) {
			tileentity.validate();
			worldIn.setTileEntity(pos, tileentity);
		}
	}

	@Override
	public IBlockState getStateForPlacement(World world, BlockPos pos, EnumFacing facing, float hitX, float hitY,
			float hitZ, int meta, EntityLivingBase placer, EnumHand hand) {
		// TODO Auto-generated method stub
		return this.getDefaultState().withProperty(FACING, placer.getHorizontalFacing().getOpposite());
	}

	@Override
	public void onBlockPlacedBy(World worldIn, BlockPos pos, IBlockState state, EntityLivingBase placer,
			ItemStack stack) {
		// TODO Auto-generated method stub
		worldIn.setBlockState(pos,
				this.getDefaultState().withProperty(FACING, placer.getHorizontalFacing().getOpposite()), 2);
	}

	@Override
	public EnumBlockRenderType getRenderType(IBlockState state) {
		// TODO Auto-generated method stub
		return EnumBlockRenderType.MODEL;
	}

	@Override
	public IBlockState withRotation(IBlockState state, Rotation rot) {
		// TODO Auto-generated method stub
		return state.withProperty(FACING, rot.rotate((EnumFacing) state.getValue(FACING)));
	}

	@Override
	public IBlockState withMirror(IBlockState state, Mirror mirrorIn) {
		// TODO Auto-generated method stub
		return state.withRotation(mirrorIn.toRotation((EnumFacing) state.getValue(FACING)));
	}

	@Override
	protected BlockStateContainer createBlockState() {
		// TODO Auto-generated method stub
		return new BlockStateContainer(this, new IProperty[] { BURNING, FACING });
	}

	@Override
	public IBlockState getStateFromMeta(int meta) {
		// TODO Auto-generated method stub
		EnumFacing facing = EnumFacing.getFront(meta);
		if (facing.getAxis() == EnumFacing.Axis.Y)
			facing = EnumFacing.NORTH;
		return this.getDefaultState().withProperty(FACING, facing);
	}

	@Override
	public int getMetaFromState(IBlockState state) {
		// TODO Auto-generated method stub
		return ((EnumFacing) state.getValue(FACING)).getIndex();
	}

	@Override
	public boolean hasTileEntity() {
		// TODO Auto-generated method stub
		return this.hasTileEntity;
	}

	@Override
	public TileEntity createTileEntity(World world, IBlockState state) {
		// TODO Auto-generated method stub
		return new TileEntityBlastFurnace();
	}
}

Other classes are not changed.

Edited June 27, 2019 by hyper1423

hyper1423 · June 27, 2019

22 minutes ago, diesieben07 said:

Define "does not work".

GUI does not open and occurs a NullPointerException.

Edited June 27, 2019 by hyper1423

hyper1423 · June 27, 2019

Spoiler

[17:46:00] [Server thread/FATAL] [minecraft/MinecraftServer]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
   at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_172]
   at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_172]
   at net.minecraft.util.Util.runTask(Util.java:54) [Util.class:?]
   at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:798) [MinecraftServer.class:?]
   at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:743) [MinecraftServer.class:?]
   at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:192) [IntegratedServer.class:?]
   at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:592) [MinecraftServer.class:?]
   at java.lang.Thread.run(Unknown Source) [?:1.8.0_172]
Caused by: java.lang.NullPointerException
   at com.hyper1423.somestuff.blocks.machines.blastfurnace.ContainerBlastFurnace.<init>(ContainerBlastFurnace.java:25) ~[ContainerBlastFurnace.class:?]
   at com.hyper1423.somestuff.util.handlers.GuiHandler.getServerGuiElement(GuiHandler.java:20) ~[GuiHandler.class:?]
   at net.minecraftforge.fml.common.network.NetworkRegistry.getRemoteGuiContainer(NetworkRegistry.java:253) ~[NetworkRegistry.class:?]
   at net.minecraftforge.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:88) ~[FMLNetworkHandler.class:?]
   at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2809) ~[EntityPlayer.class:?]
   at com.hyper1423.somestuff.blocks.machines.blastfurnace.BlastFurnace.onBlockActivated(BlastFurnace.java:85) ~[BlastFurnace.class:?]
   at net.minecraft.server.management.PlayerInteractionManager.processRightClickBlock(PlayerInteractionManager.java:475) ~[PlayerInteractionManager.class:?]
   at net.minecraft.network.NetHandlerPlayServer.processTryUseItemOnBlock(NetHandlerPlayServer.java:769) ~[NetHandlerPlayServer.class:?]
   at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.processPacket(CPacketPlayerTryUseItemOnBlock.java:68) ~[CPacketPlayerTryUseItemOnBlock.class:?]
   at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.processPacket(CPacketPlayerTryUseItemOnBlock.java:13) ~[CPacketPlayerTryUseItemOnBlock.class:?]
   at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:21) ~[PacketThreadUtil$1.class:?]
   at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_172]
   at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_172]
   at net.minecraft.util.Util.runTask(Util.java:53) ~[Util.class:?]
   ... 5 more

Here it is.

Edited June 27, 2019 by hyper1423

hyper1423 · June 27, 2019

I think the TileEntity instance is null, but I can't find why it is null and how to fix it.

hyper1423 · June 27, 2019

Spoiler


package com.hyper1423.somestuff.util.handlers;

import java.util.logging.Logger;

import com.hyper1423.somestuff.blocks.machines.blastfurnace.ContainerBlastFurnace;
import com.hyper1423.somestuff.blocks.machines.blastfurnace.GuiBlastFurnace;
import com.hyper1423.somestuff.blocks.machines.blastfurnace.TileEntityBlastFurnace;
import com.hyper1423.somestuff.util.Reference;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraftforge.fml.common.network.IGuiHandler;

public class GuiHandler implements IGuiHandler {
	
	@Override
	public Object getServerGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
		// TODO Auto-generated method stub
		if(ID == Reference.GUI_BLAST_FURNACE) return new ContainerBlastFurnace(player.inventory, (TileEntityBlastFurnace)world.getTileEntity(new BlockPos(x, y, z)));
		return null;
	}

	@Override
	public Object getClientGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
		// TODO Auto-generated method stub
		if(ID == Reference.GUI_BLAST_FURNACE) return new GuiBlastFurnace(player.inventory, (TileEntityBlastFurnace)world.getTileEntity(new BlockPos(x, y, z)));
		return null;
	}

}

hyper1423 · June 29, 2019

This is my Github link.

hyper1423 · June 29, 2019

13 minutes ago, diesieben07 said:

The version of hasTileEntity you are using is deprecated. Do not just ignore deprecations.

~~Which hasTileEntity do you mean?~~

Ok, I changed hasTileEntity to the version that is not deprecated.

EDIT: It still doesn't open.

Edited June 29, 2019 by hyper1423

hyper1423 · June 29, 2019

I found that BlastFurnace.hasTileEntity is false and Minecraft does not call BlastFurnace.createTileEntity(World world, IBlockState state). I guess my TileEntity isn't registered correctly.

Edited June 29, 2019 by hyper1423

DavidM · June 29, 2019

You are supposed to override Block#hasTIleEntity.

hyper1423 · June 29, 2019

2 minutes ago, DavidM said:

You are supposed to override Block#hasTIleEntity.

I overrided it correctly.

hyper1423 · June 30, 2019

Thank you!!!!!!! It works!!! But it still does not cook item, and use an item in a tick.

EDIT: I fixed it. I changed the code like this:

Spoiler


@Override
	public void update() {

		if (isBurning()) {
			--burnTime;
			BlastFurnace.setState(true, world, pos);
		}
		ItemStack fuel = (ItemStack) inventory.getStackInSlot(1);

		if (isBurning() || !fuel.isEmpty() && !inventory.getStackInSlot(0).isEmpty()) {
			if (!isBurning() && canSmelt()) {
				burnTime = getItemBurnTime(fuel);
				currentBurnTime = burnTime;

				if (isBurning() && !fuel.isEmpty()) {
					Item item = fuel.getItem();
					fuel.shrink(1);

					if (fuel.isEmpty()) {
						ItemStack item1 = item.getContainerItem(fuel);
						inventory.setStackInSlot(1, item1);
					}
				}
			}

			if (isBurning() && canSmelt() && cookTime > 0) {
				cookTime++;

				if (cookTime == totalCookTime) {
					if (inventory.getStackInSlot(2).getCount() > 0) {
						inventory.getStackInSlot(2).grow(1);
					} else {
						inventory.insertItem(2, smelting, false);
					}

					if (inventory.getStackInSlot(3).getCount() > 0) {
						inventory.getStackInSlot(3).grow(1);
					} else {
						inventory.insertItem(3, new ItemStack(ModItems.SLUG, 1), false);
					}
					smelting = ItemStack.EMPTY;
					cookTime = 0;
				}
				return;
			}

//			} else if (!isBurning() && cookTime > 0) {
//				if (cookTime > getCookTime(inventory.getStackInSlot(1)) / 3)
//					cookTime = MathHelper.clamp(cookTime - 3, 0, totalCookTime);
//				else
//					MathHelper.clamp(cookTime - 2, 0, totalCookTime);
			else {
				if (this.canSmelt() && this.isBurning()) {
					ItemStack output = BlastFurnaceRecipes.getInstance().getResult(inventory.getStackInSlot(0));
					if (!output.isEmpty()) {
						smelting = output;
						cookTime++;
						inventory.getStackInSlot(0).shrink(1);
					}
				}
			}
		}
//			if (flag != isBurning()) {
//				flag1 = true;
//				BlastFurnace.setState(isBurning(), world, pos);
//			}
//		}
//		if (flag1) {
//			markDirty();
//		}
	}

and it works. Thanks to everyone who helped me.

Edited June 30, 2019 by hyper1423

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[SOLVED] [1.12.2] My custom furnace doesn't make output

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