Custom furnace container error

AppliedOnce · August 29, 2013

Hi, I'm working on this furnace and I have gotten everything to work properly except one thing, the progress bars aren't working. Then I found out how the vanilla furnace did it, but when I tried it out it gave me some null pointers and a error log.

So here is my Container and error log and the gui in case that is needed.

ContainerFuser

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package net.blazecoding.magicpowders.inventory;

import net.blazecoding.magicpowders.tileentity.TileFuser;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.ICrafting;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

/**
* 
* Magic Powders
* 
* ContainerFuser
* 
* @author BlazeCoding
* @license Lesser GNU Public License v3 (http://www.gnu.org/licenses/lgpl.html)
* 
*/

public class ContainerFuser extends Container {

private TileFuser fuser;

private int lastCookTime = 0;
private int lastBurnTime = 0;
private int lastItemBurnTime = 0;

public ContainerFuser(InventoryPlayer inventoryPlayer, TileFuser fuser) {

	this.fuser = fuser;

	// Add the input slot to the container
	this.addSlotToContainer(new Slot(fuser, TileFuser.INPUT_INVENTORY_INDEX, 56, 17));

	// Add the fuel slot to the container
	this.addSlotToContainer(new Slot(fuser, TileFuser.FUEL_INVENTORY_INDEX, 56, 53));

	// Add the output results slot to the container
	this.addSlotToContainer(new SlotFuser(fuser, TileFuser.OUTPUT_INVENTORY_INDEX, 116, 35));

	// Add the player's inventory slots to the container
	for (int inventoryRowIndex = 0; inventoryRowIndex < 3; ++inventoryRowIndex) {
		for (int inventoryColumnIndex = 0; inventoryColumnIndex < 9; ++inventoryColumnIndex) {
			this.addSlotToContainer(new Slot(inventoryPlayer, inventoryColumnIndex + inventoryRowIndex * 9 + 9, 8 + inventoryColumnIndex * 18, 84 + inventoryRowIndex * 18));
		}
	}

	// Add the player's action bar slots to the container
	for (int actionBarSlotIndex = 0; actionBarSlotIndex < 9; ++actionBarSlotIndex) {
		this.addSlotToContainer(new Slot(inventoryPlayer, actionBarSlotIndex, 8 + actionBarSlotIndex * 18, 142));
	}

}

public void addCraftingToCrafters(ICrafting par1ICrafting) {
	super.addCraftingToCrafters(par1ICrafting);
	par1ICrafting.sendProgressBarUpdate(this, 0, this.fuser.fuserFuseTime);
	par1ICrafting.sendProgressBarUpdate(this, 1, this.fuser.fuserFusedTime2);
	par1ICrafting.sendProgressBarUpdate(this, 2, this.fuser.currentItemFuseTime);
}

public void detectAndSendChanges() {

	super.detectAndSendChanges();

	for (int var1 = 0; var1 < this.crafters.size(); ++var1) {

		ICrafting var2 = (ICrafting) this.crafters.get(var1);

		if (this.lastBurnTime != this.fuser.fuserFuseTime) {
			var2.sendProgressBarUpdate(this, 0, this.fuser.fuserFuseTime);
		}

		if (this.lastCookTime != this.fuser.fuserFusedTime2) {
			var2.sendProgressBarUpdate(this, 1, this.fuser.fuserFusedTime2);
		}

		if (this.lastItemBurnTime != this.fuser.currentItemFuseTime) {
			var2.sendProgressBarUpdate(this, 2, this.fuser.currentItemFuseTime);
		}

		this.lastCookTime = this.fuser.fuserFusedTime2;
		this.lastBurnTime = this.fuser.fuserFuseTime;
		this.lastItemBurnTime = this.fuser.currentItemFuseTime;

	}
}

@SideOnly(Side.CLIENT)
public void updateProgressBar(int par1, int par2) {

	if (par1 == 0) {
		this.fuser.fuserFuseTime = par2;
	}

	if (par1 == 1) {
		this.fuser.fuserFusedTime2 = par2;
	}

	if (par1 == 2) {
		this.fuser.currentItemFuseTime = par2;
	}

}

public boolean canInteractWith(EntityPlayer player) {
	return fuser.isUseableByPlayer(player);
}

public ItemStack transferStackInSlot(EntityPlayer entityPlayer, int slotIndex) {

	ItemStack itemStack = null;
	Slot slot = (Slot) inventorySlots.get(slotIndex);

	if (slot != null && slot.getHasStack()) {

		ItemStack slotItemStack = slot.getStack();
		itemStack = slotItemStack.copy();

		if (slotIndex < TileFuser.INVENTORY_SIZE) {

			if (!this.mergeItemStack(slotItemStack, TileFuser.INVENTORY_SIZE, inventorySlots.size(), false)) {
				return null;
			}

		} else {

			if (TileFuser.isItemDust(slotItemStack)) {
				if (!this.mergeItemStack(slotItemStack, TileFuser.FUEL_INVENTORY_INDEX, TileFuser.OUTPUT_INVENTORY_INDEX, false)) {
					return null;
				}
			}

			else if (!this.mergeItemStack(slotItemStack, TileFuser.INPUT_INVENTORY_INDEX, TileFuser.OUTPUT_INVENTORY_INDEX, false)) {
				return null;
			}

		}

		if (slotItemStack.stackSize == 0) {
			slot.putStack((ItemStack) null);
		} else {
			slot.onSlotChanged();
		}

	}

	return itemStack;

}

}

GuiFuser

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package net.blazecoding.magicpowders.client.gui.inventory;

import net.blazecoding.magicpowders.inventory.ContainerFuser;
import net.blazecoding.magicpowders.lib.Strings;
import net.blazecoding.magicpowders.lib.Textures;
import net.blazecoding.magicpowders.tileentity.TileFuser;
import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.util.StatCollector;

import org.lwjgl.opengl.GL11;

/**
* 
* Magic Powders
* 
* GuiFuser
* 
* @author BlazeCoding
* @license Lesser GNU Public License v3 (http://www.gnu.org/licenses/lgpl.html)
* 
*/

public class GuiFuser extends GuiContainer {

private TileFuser tileFuser;

public GuiFuser(InventoryPlayer player, TileFuser tileFuser) {
	super(new ContainerFuser(player, tileFuser));
	this.tileFuser = tileFuser;
}

protected void drawGuiContainerForegroundLayer(int x, int y) {

	String containerName = tileFuser.isInvNameLocalized() ? tileFuser.getInvName() : StatCollector.translateToLocal(tileFuser.getInvName());
	fontRenderer.drawString(containerName, xSize / 2 - fontRenderer.getStringWidth(containerName) / 2, 6, 4210752);
	fontRenderer.drawString(StatCollector.translateToLocal(Strings.CONTAINER_INVENTORY), 8, ySize - 96 + 2, 4210752);

}

protected void drawGuiContainerBackgroundLayer(float opacity, int x, int y) {

	GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);

	// this.mc.getTextureManager().bindTexture(...)
	this.mc.func_110434_K().func_110577_a(Textures.GUI_FUSER);

	int xStart = (width - xSize) / 2;
	int yStart = (height - ySize) / 2;

	this.drawTexturedModalRect(xStart, yStart, 0, 0, xSize, ySize);

	int i1;

	if (this.tileFuser.isBurning()) {
		i1 = this.tileFuser.getBurnTimeRemainingScaled(12);
		this.drawTexturedModalRect(xStart + 56, yStart + 36 + 12 - i1, 176, 12 - i1, 14, i1 + 2);
	}

	i1 = this.tileFuser.getCookProgressTimeScaled(24);
	this.drawTexturedModalRect(xStart + 79, yStart + 34, 176, 14, i1 + 1, 16);

}

}

Error log:

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2013-08-29 23:28:10 [iNFO] [sTDERR] net.minecraft.util.ReportedException: Ticking memory connection

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.network.NetworkListenThread.networkTick(NetworkListenThread.java:63)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.server.integrated.IntegratedServerListenThread.networkTick(IntegratedServerListenThread.java:109)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:689)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:585)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:129)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)

2013-08-29 23:28:10 [iNFO] [sTDERR] Caused by: java.lang.NullPointerException

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.blazecoding.magicpowders.inventory.ContainerFuser.detectAndSendChanges(ContainerFuser.java:65)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.inventory.Container.addCraftingToCrafters(Container.java:56)

2013-08-29 23:28:10 [iNFO] [sTDERR] at cpw.mods.fml.common.network.NetworkRegistry.openRemoteGui(NetworkRegistry.java:321)

2013-08-29 23:28:10 [iNFO] [sTDERR] at cpw.mods.fml.common.network.FMLNetworkHandler.openGui(FMLNetworkHandler.java:352)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2461)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.blazecoding.magicpowders.block.BlockFuser.onBlockActivated(BlockFuser.java:94)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.item.ItemInWorldManager.activateBlockOrUseItem(ItemInWorldManager.java:416)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.network.NetServerHandler.handlePlace(NetServerHandler.java:554)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.network.packet.Packet15Place.processPacket(Packet15Place.java:79)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.network.MemoryConnection.processReadPackets(MemoryConnection.java:89)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.network.NetServerHandler.networkTick(NetServerHandler.java:141)

2013-08-29 23:28:10 [iNFO] [sTDERR] at net.minecraft.network.NetworkListenThread.networkTick(NetworkListenThread.java:54)

2013-08-29 23:28:10 [iNFO] [sTDERR] ... 6 more

2013-08-29 23:28:10 [sEVERE] [Minecraft-Server] Encountered an unexpected exception ReportedException

net.minecraft.util.ReportedException: Ticking memory connection

at net.minecraft.network.NetworkListenThread.networkTick(NetworkListenThread.java:63)

at net.minecraft.server.integrated.IntegratedServerListenThread.networkTick(IntegratedServerListenThread.java:109)

at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:689)

at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:585)

at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:129)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482)

at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)

Caused by: java.lang.NullPointerException

at net.blazecoding.magicpowders.inventory.ContainerFuser.detectAndSendChanges(ContainerFuser.java:65)

at net.minecraft.inventory.Container.addCraftingToCrafters(Container.java:56)

at cpw.mods.fml.common.network.NetworkRegistry.openRemoteGui(NetworkRegistry.java:321)

at cpw.mods.fml.common.network.FMLNetworkHandler.openGui(FMLNetworkHandler.java:352)

at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2461)

at net.blazecoding.magicpowders.block.BlockFuser.onBlockActivated(BlockFuser.java:94)

at net.minecraft.item.ItemInWorldManager.activateBlockOrUseItem(ItemInWorldManager.java:416)

at net.minecraft.network.NetServerHandler.handlePlace(NetServerHandler.java:554)

at net.minecraft.network.packet.Packet15Place.processPacket(Packet15Place.java:79)

at net.minecraft.network.MemoryConnection.processReadPackets(MemoryConnection.java:89)

at net.minecraft.network.NetServerHandler.networkTick(NetServerHandler.java:141)

at net.minecraft.network.NetworkListenThread.networkTick(NetworkListenThread.java:54)

... 6 more

2013-08-29 23:28:10 [sEVERE] [Minecraft-Server] This crash report has been saved to: C:\Development\forge\mcp\jars\.\crash-reports\crash-2013-08-29_23.28.10-server.txt

2013-08-29 23:28:10 [iNFO] [Minecraft-Server] Stopping server

2013-08-29 23:28:10 [iNFO] [Minecraft-Server] Saving players

2013-08-29 23:28:10 [iNFO] [Minecraft-Server] Xetosphere left the game

2013-08-29 23:28:10 [iNFO] [sTDOUT] ---- Minecraft Crash Report ----

2013-08-29 23:28:10 [iNFO] [sTDOUT] // Ouch. That hurt

2013-08-29 23:28:10 [iNFO] [sTDOUT]

2013-08-29 23:28:10 [iNFO] [sTDOUT] Time: 29.08.13 23:28

2013-08-29 23:28:10 [iNFO] [sTDOUT] Description: Ticking memory connection

2013-08-29 23:28:10 [iNFO] [sTDOUT]

2013-08-29 23:28:10 [iNFO] [sTDOUT] java.lang.NullPointerException

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.blazecoding.magicpowders.inventory.ContainerFuser.detectAndSendChanges(ContainerFuser.java:65)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.inventory.Container.addCraftingToCrafters(Container.java:56)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at cpw.mods.fml.common.network.NetworkRegistry.openRemoteGui(NetworkRegistry.java:321)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at cpw.mods.fml.common.network.FMLNetworkHandler.openGui(FMLNetworkHandler.java:352)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2461)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.blazecoding.magicpowders.block.BlockFuser.onBlockActivated(BlockFuser.java:94)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.item.ItemInWorldManager.activateBlockOrUseItem(ItemInWorldManager.java:416)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.network.NetServerHandler.handlePlace(NetServerHandler.java:554)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.network.packet.Packet15Place.processPacket(Packet15Place.java:79)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.network.MemoryConnection.processReadPackets(MemoryConnection.java:89)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.network.NetServerHandler.networkTick(NetServerHandler.java:141)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.network.NetworkListenThread.networkTick(NetworkListenThread.java:54)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.server.integrated.IntegratedServerListenThread.networkTick(IntegratedServerListenThread.java:109)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:689)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:585)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:129)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482)

2013-08-29 23:28:10 [iNFO] [sTDOUT] at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)

2013-08-29 23:28:10 [iNFO] [sTDOUT]

2013-08-29 23:28:10 [iNFO] [sTDOUT] A detailed walkthrough of the error, its code path and all known details is as follows:

2013-08-29 23:28:10 [iNFO] [sTDOUT] ---------------------------------------------------------------------------------------

2013-08-29 23:28:10 [iNFO] [sTDOUT]

2013-08-29 23:28:10 [iNFO] [sTDOUT] -- Head --

2013-08-29 23:28:10 [iNFO] [sTDOUT] Stacktrace: