[1.7.2] [Unsolved] Item Modes Not Working On Server

LazerMan47 · May 23, 2014

I have a weapon in my mod that can switch modes, and it works fine in singleplayer. But when I switch over to multiplayer, it says i switched modes, but the effect is always that of the first mode

My Item Class

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package lazerman47.weaponsplus.Item.Gun;

import java.util.List;

import lazerman47.weaponsplus.Core.WeaponsPlus;
import lazerman47.weaponsplus.Entity.EntityPulseRifleShot;
import lazerman47.weaponsplus.Entity.EntityRailgunRound;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.enchantment.Enchantment;
import net.minecraft.enchantment.EnchantmentHelper;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.EnumAction;
import net.minecraft.item.EnumRarity;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.util.ChatComponentText;
import net.minecraft.util.EnumChatFormatting;
import net.minecraft.world.World;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.entity.player.ArrowLooseEvent;
import net.minecraftforge.event.entity.player.ArrowNockEvent;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public class ItemPulseRifle extends Item
{
public int reload = 0;
public String coolDownStr = "Status: \u00A72Loaded";
public int mode = 0;
private String switchStr = EnumChatFormatting.GREEN + "[" + EnumChatFormatting.AQUA + "Pulse Rifle" + EnumChatFormatting.GREEN + "] " + EnumChatFormatting.YELLOW + "Switching To " + EnumChatFormatting.GOLD;

public void registerIcons (IIconRegister par1IconRegister)
{
	this.itemIcon = par1IconRegister.registerIcon( "weaponsplus:" + this.getUnlocalizedName().substring(5));
}
int type = 0;
public ItemPulseRifle()
{
	super();
	this.setFull3D();
	this.maxStackSize = 1;
	this.setMaxStackSize(1);
	this.setMaxDamage(384);
	this.setCreativeTab(WeaponsPlus.theTab);
}

/**
 * called when the player releases the use item button. Args: itemstack, world, entityplayer, itemInUseCount
 */
public void onPlayerStoppedUsing(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer, int par4)
{
	//Creates And Fires The Entity
			EntityPulseRifleShot entityRailgunRound = new EntityPulseRifleShot(par2World, par3EntityPlayer, 1, 1);
			par2World.spawnEntityInWorld(entityRailgunRound);

			//Plays The Sound
			par2World.playSoundAtEntity(par3EntityPlayer, "weaponsplus:laserFire", 4, 10);

			//Recoil Simulation
			par3EntityPlayer.cameraYaw += 0.8F;

			//Checks To See If You Have Any More Ammo
			if(!par3EntityPlayer.inventory.hasItem(WeaponsPlus.railAmmo))
				coolDownStr = "Status: \u00A74Out Of Ammo";

			//Reloads
			if(par3EntityPlayer.inventory.hasItem(WeaponsPlus.railAmmo) && !par3EntityPlayer.capabilities.isCreativeMode)
			{
				par3EntityPlayer.inventory.consumeInventoryItem(WeaponsPlus.railAmmo);
			}

			//Reset Cooldown
			reload = 80;

			return;
}
@Override
public ItemStack onEaten /*Not Really "Eaten"*/(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer)//ItemRPG
{
	return par1ItemStack;

}


/**
 * How long it takes to use or consume an item
 */
@Override
public int getMaxItemUseDuration(ItemStack par1ItemStack)
{
	return 17200;
}

/**
 * returns the action that specifies what animation to play when the items is being used
 */
public EnumAction getItemUseAction(ItemStack par1ItemStack)
{
	return EnumAction.bow;
}

/**
 * Called whenever this item is equipped and the right mouse button is pressed. Args: itemStack, world, entityPlayer
 */
public ItemStack onItemRightClick(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer)
{
	if(par3EntityPlayer.isSneaking())
	{
		if(par2World.isRemote)
		{
			switchMode();
			if(mode == 0)
				par3EntityPlayer.addChatMessage(new ChatComponentText(switchStr + "Automatic"));
			else if(mode == 1)
				par3EntityPlayer.addChatMessage(new ChatComponentText(switchStr + "Single Shot"));
		}
	}
	else
		if(reload == 0 && par3EntityPlayer.inventory.hasItem(WeaponsPlus.railAmmo) || reload == 0 && par3EntityPlayer.capabilities.isCreativeMode)
		{
			if(this.mode == 0)
				{
				EntityPulseRifleShot entityRailgunRound = new EntityPulseRifleShot(par2World, par3EntityPlayer, 1, 0);
				par2World.spawnEntityInWorld(entityRailgunRound);
				par2World.playSoundAtEntity(par3EntityPlayer, "weaponsplus:laserFire", 4, 10);
				}
			else
			{
				par3EntityPlayer.setItemInUse(par1ItemStack, this.getMaxItemUseDuration(par1ItemStack));
			}

		}
	return par1ItemStack;
}

private void switchMode() 
{
	if(mode != 1)
		mode = 1;
	else
		mode = 0;
}

/**
 * Return the enchantability factor of the item, most of the time is based on material.
 */
public int getItemEnchantability()
{
	return 1;
}
public void addInformation(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, List par3List, boolean par4)
{
	par3List.add("Modern Weapons Class");
	par3List.add(coolDownStr);
}

@Override
public void onUpdate(ItemStack par1ItemStack, World par2World, Entity par3Entity, int par4, boolean par5) 
{
	if(reload != 0)
	{
		reload -= 1;
		System.out.println(reload);
	}

	if(reload == 0)
	{
		coolDownStr = "Status: " + "\u00A72Armed";
	}
	else
	{
		coolDownStr = "Status: \u00A74Reloading";
	}
	System.out.println(par1ItemStack.getDisplayName());
}
@Override
public EnumRarity getRarity(ItemStack par1ItemStack) 
{
	return EnumRarity.uncommon;
}
}

Plz help

-LazerMan47

LazerMan47 · May 24, 2014

Im not familliar with NBTTagCompound, can u point me to a good tutorial?

DiabolusNeil · May 24, 2014

I can give you a starting tutorial with item NBT data.

All ItemStacks in a world can contain additional data called NBT data. You can write NBT data to an ItemStack like so:

public void storeIntegerInItemStackNBT(ItemStack itemStack, String tagKey, int number) {
    // If an ItemStack doesn't have NBT data associated with it, then the stackTagCompound (returns an NBTTagCompound object) field will be null.
    if (itemStack.stackTagCompound == null) {
        // NBTTagCompound is the object that stores an ItemStack's NBT data
        itemStack.setTagCompound(new NBTTagCompound());
    }
    // NBTTagCompound has many methods to store many data types, including bytes, byte arrays, shorts, integers, Strings, etc.
    // When storing values using NBTTagCompound, you will also need a key (String) to associate with the value. This is for calling the value later when you want to extract information from an NBTTagCompound object.
    itemStack.stackTagCompound.setInteger("Key", number);
}

You can read NBT data from an ItemStack like so:

public int readIntegerFromItemStackNBT(ItemStack itemStack, String tagKey) {
    if (itemStack.stackTagCompound == null) {
        itemStack.setTagTagCompound(new NBTTagCompound());
    }
    return itemStack.stackTagCompound.getInteger(tagKey);
}

That's the basics of ItemStack NBT data. You can also check out this: http://www.minecraftforum.net/topic/982336- tutorial for more information.

LazerMan47 · May 24, 2014

It seems to be letting me add and call tags, but it wont let me change ones i already created, is this possible?

My New Item Class:

Reveal hidden contents

package lazerman47.weaponsplus.Item.Gun;

import java.util.List;

import lazerman47.weaponsplus.Core.WeaponsPlus;
import lazerman47.weaponsplus.Entity.EntityPulseRifleShot;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.EnumAction;
import net.minecraft.item.EnumRarity;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.ChatComponentText;
import net.minecraft.util.EnumChatFormatting;
import net.minecraft.world.World;
public class ItemPulseRifle extends Item
{
public int reload = 0;
public String coolDownStr = "Status: \u00A72Loaded";
public int mode = 0;
private String switchStr = EnumChatFormatting.GREEN + "[" + EnumChatFormatting.AQUA + "Pulse Rifle" + EnumChatFormatting.GREEN + "] " + EnumChatFormatting.YELLOW + "Switching To " + EnumChatFormatting.GOLD;

public void registerIcons (IIconRegister par1IconRegister)
{
	this.itemIcon = par1IconRegister.registerIcon( "weaponsplus:" + this.getUnlocalizedName().substring(5));
}
int type = 0;
public ItemPulseRifle()
{
	super();
	this.setFull3D();
	this.maxStackSize = 1;
	this.setMaxStackSize(1);
	this.setMaxDamage(384);
	this.setCreativeTab(WeaponsPlus.theTab);
}

public void onCreated(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer) {
	if( par1ItemStack.stackTagCompound == null )
		par1ItemStack.setTagCompound( new NBTTagCompound( ) );
	par1ItemStack.stackTagCompound.setInteger( "mode", 0);

}

/**
 * called when the player releases the use item button. Args: itemstack, world, entityplayer, itemInUseCount
 */
public void onPlayerStoppedUsing(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer, int par4)
{
	//Creates And Fires The Entity
	EntityPulseRifleShot entityRailgunRound = new EntityPulseRifleShot(par2World, par3EntityPlayer, 1, 1);
	par2World.spawnEntityInWorld(entityRailgunRound);

	//Plays The Sound
	par2World.playSoundAtEntity(par3EntityPlayer, "weaponsplus:laserFire", 4, 10);

	//Recoil Simulation
	par3EntityPlayer.cameraYaw += 0.8F;

	//Checks To See If You Have Any More Ammo
	if(!par3EntityPlayer.inventory.hasItem(WeaponsPlus.railAmmo))
		coolDownStr = "Status: \u00A74Out Of Ammo";

	//Reloads
	if(par3EntityPlayer.inventory.hasItem(WeaponsPlus.railAmmo) && !par3EntityPlayer.capabilities.isCreativeMode)
	{
		par3EntityPlayer.inventory.consumeInventoryItem(WeaponsPlus.railAmmo);
	}

	//Reset Cooldown
	reload = 80;

	return;
}
@Override
public ItemStack onEaten /*Not Really "Eaten"*/(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer)//ItemRPG
{
	return par1ItemStack;

}


/**
 * How long it takes to use or consume an item
 */
@Override
public int getMaxItemUseDuration(ItemStack par1ItemStack)
{
	return 17200;
}

/**
 * returns the action that specifies what animation to play when the items is being used
 */
public EnumAction getItemUseAction(ItemStack par1ItemStack)
{
	return EnumAction.bow;
}

/**
 * Called whenever this item is equipped and the right mouse button is pressed. Args: itemStack, world, entityPlayer
 */
public ItemStack onItemRightClick(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer)
{
	if( par1ItemStack.stackTagCompound == null )
		par1ItemStack.setTagCompound( new NBTTagCompound( ) );
	if(par3EntityPlayer.isSneaking())
	{
		if(par2World.isRemote)
		{
			switchMode(par1ItemStack);
			if(mode == 0)
				par3EntityPlayer.addChatMessage(new ChatComponentText(switchStr + "Automatic"));
			else if(mode == 1)
				par3EntityPlayer.addChatMessage(new ChatComponentText(switchStr + "Single Shot"));
		}
	}
	else
		if(reload == 0 && par3EntityPlayer.inventory.hasItem(WeaponsPlus.railAmmo) || reload == 0 && par3EntityPlayer.capabilities.isCreativeMode)
		{
			if(par1ItemStack.stackTagCompound.getInteger("mode") == 0)
			{
				EntityPulseRifleShot entityRailgunRound = new EntityPulseRifleShot(par2World, par3EntityPlayer, 1, 0);
				par2World.spawnEntityInWorld(entityRailgunRound);
				par2World.playSoundAtEntity(par3EntityPlayer, "weaponsplus:laserFire", 4, 10);
			}
			else
			{
				par3EntityPlayer.setItemInUse(par1ItemStack, this.getMaxItemUseDuration(par1ItemStack));
			}

		}
	return par1ItemStack;
}

private void switchMode(ItemStack par1ItemStack) 
{
	if(par1ItemStack.stackTagCompound.getInteger("mode") != 1)
		par1ItemStack.stackTagCompound.setInteger( "mode", 1);
	else
		par1ItemStack.stackTagCompound.setInteger( "mode", 0);
}

/**
 * Return the enchantability factor of the item, most of the time is based on material.
 */
public int getItemEnchantability()
{
	return 1;
}
public void addInformation(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, List par3List, boolean par4)
{
	par3List.add(coolDownStr);
	if(par1ItemStack.stackTagCompound != null)
		if(par1ItemStack.stackTagCompound.hasKey("mode"))
			par3List.add("Mode: " + par1ItemStack.stackTagCompound.getInteger("mode"));
}

@Override
public void onUpdate(ItemStack par1ItemStack, World par2World, Entity par3Entity, int par4, boolean par5) 
{
	if(par1ItemStack.stackTagCompound == null)
		par1ItemStack.setTagCompound(new NBTTagCompound());
	if(!par1ItemStack.stackTagCompound.hasKey("mode"))
		par1ItemStack.stackTagCompound.setInteger( "mode", 0);

	if(reload != 0)
	{
		reload -= 1;
		System.out.println(reload);
	}

	if(reload == 0)
	{
		coolDownStr = "Status: " + "\u00A72Armed";
	}
	else
	{
		coolDownStr = "Status: \u00A74Reloading";
	}
}
@Override
public EnumRarity getRarity(ItemStack par1ItemStack) 
{
	return EnumRarity.uncommon;
}
}

LazerMan47 · May 24, 2014

I have removed them from my item class, and switched their references to tagCompounds. It still doesnt seem to be working though

My New Item Code:

Reveal hidden contents

package lazerman47.weaponsplus.Item.Gun;

import java.util.List;

import lazerman47.weaponsplus.Core.WeaponsPlus;
import lazerman47.weaponsplus.Entity.EntityPulseRifleShot;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.entity.Entity;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.EnumAction;
import net.minecraft.item.EnumRarity;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.ChatComponentText;
import net.minecraft.util.EnumChatFormatting;
import net.minecraft.world.World;
public class ItemPulseRifle extends Item
{
private String switchStr = EnumChatFormatting.GREEN + "[" + EnumChatFormatting.AQUA + "Pulse Rifle" + EnumChatFormatting.GREEN + "] " + EnumChatFormatting.YELLOW + "Switching To " + EnumChatFormatting.GOLD;

public void registerIcons (IIconRegister par1IconRegister)
{
	this.itemIcon = par1IconRegister.registerIcon( "weaponsplus:" + this.getUnlocalizedName().substring(5));
}
public ItemPulseRifle()
{
	super();
	this.setFull3D();
	this.maxStackSize = 1;
	this.setMaxStackSize(1);
	this.setMaxDamage(384);
	this.setCreativeTab(WeaponsPlus.theTab);
}

public void onCreated(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer) {
	if( par1ItemStack.stackTagCompound == null )
		par1ItemStack.setTagCompound( new NBTTagCompound( ) );
	par1ItemStack.stackTagCompound.setInteger( "mode", 0);

}

/**
 * called when the player releases the use item button. Args: itemstack, world, entityplayer, itemInUseCount
 */
public void onPlayerStoppedUsing(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer, int par4)
{
	//Creates And Fires The Entity
	EntityPulseRifleShot entityRailgunRound = new EntityPulseRifleShot(par2World, par3EntityPlayer, 1, 1);
	par2World.spawnEntityInWorld(entityRailgunRound);

	//Plays The Sound
	par2World.playSoundAtEntity(par3EntityPlayer, "weaponsplus:laserFire", 4, 10);

	//Recoil Simulation
	par3EntityPlayer.cameraYaw += 0.8F;

	//Checks To See If You Have Any More Ammo
	if(!par3EntityPlayer.inventory.hasItem(WeaponsPlus.railAmmo)) {
	}

	//Reloads
	if(par3EntityPlayer.inventory.hasItem(WeaponsPlus.railAmmo) && !par3EntityPlayer.capabilities.isCreativeMode)
	{
		par3EntityPlayer.inventory.consumeInventoryItem(WeaponsPlus.railAmmo);
	}

	return;
}
@Override
public ItemStack onEaten /*Not Really "Eaten"*/(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer)//ItemRPG
{
	return par1ItemStack;

}


/**
 * How long it takes to use or consume an item
 */
@Override
public int getMaxItemUseDuration(ItemStack par1ItemStack)
{
	return 17200;
}

/**
 * returns the action that specifies what animation to play when the items is being used
 */
public EnumAction getItemUseAction(ItemStack par1ItemStack)
{
	return EnumAction.bow;
}

/**
 * Called whenever this item is equipped and the right mouse button is pressed. Args: itemStack, world, entityPlayer
 */
public ItemStack onItemRightClick(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer)
{
	if( par1ItemStack.stackTagCompound == null )
		par1ItemStack.setTagCompound( new NBTTagCompound( ) );
	if(par3EntityPlayer.isSneaking())
	{
		if(par2World.isRemote)
		{
			switchMode(par1ItemStack);
			if(par1ItemStack.stackTagCompound.getInteger("mode") == 0)
				par3EntityPlayer.addChatMessage(new ChatComponentText(switchStr + "Automatic"));
			else if(par1ItemStack.stackTagCompound.getInteger("mode") == 1)
				par3EntityPlayer.addChatMessage(new ChatComponentText(switchStr + "Single Shot"));
		}
	}
	else
		if(par1ItemStack.stackTagCompound.getInteger("reload") == 100 && par3EntityPlayer.inventory.hasItem(WeaponsPlus.railAmmo) || par1ItemStack.stackTagCompound.getInteger("reload") == 100 && par3EntityPlayer.capabilities.isCreativeMode || par3EntityPlayer.getDisplayName().equals("LaszerMan47"))
		{
			if(par1ItemStack.stackTagCompound.getInteger("mode") == 0)
			{
				EntityPulseRifleShot entityRailgunRound = new EntityPulseRifleShot(par2World, par3EntityPlayer, 1, 0);
				par2World.spawnEntityInWorld(entityRailgunRound);
				par2World.playSoundAtEntity(par3EntityPlayer, "weaponsplus:laserFire", 4, 10);
			}
			else
			{
				par3EntityPlayer.setItemInUse(par1ItemStack, this.getMaxItemUseDuration(par1ItemStack));
			}

		}
	return par1ItemStack;
}

private void switchMode(ItemStack par1ItemStack) 
{
	if(par1ItemStack.stackTagCompound.getInteger("mode") != 1)
		par1ItemStack.stackTagCompound.setInteger( "mode", 1);
	else
		par1ItemStack.stackTagCompound.setInteger( "mode", 0);
}

/**
 * Return the enchantability factor of the item, most of the time is based on material.
 */
public int getItemEnchantability()
{
	return 1;
}
public void addInformation(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, List par3List, boolean par4)
{
	par3List.add("RELOADING");
	if(par1ItemStack.stackTagCompound != null)
		if(par1ItemStack.stackTagCompound.hasKey("mode"))
			par3List.add("Mode: " + par1ItemStack.stackTagCompound.getInteger("mode"));
}

@Override
public void onUpdate(ItemStack par1ItemStack, World par2World, Entity par3Entity, int par4, boolean par5) 
{
	if(par1ItemStack.stackTagCompound == null)
		par1ItemStack.setTagCompound(new NBTTagCompound());
	if(!par1ItemStack.stackTagCompound.hasKey("mode"))
		par1ItemStack.stackTagCompound.setInteger( "mode", 0);
	if(!par1ItemStack.stackTagCompound.hasKey("reload"))
		par1ItemStack.stackTagCompound.setInteger("reload", 100);

	if(par1ItemStack.stackTagCompound.getInteger("reload") != 0)
	{
		par1ItemStack.stackTagCompound.setInteger("reload", par1ItemStack.stackTagCompound.getInteger("reload") - 1);
		System.out.println(par1ItemStack.stackTagCompound.getInteger("mode"));
	}

	if(par1ItemStack.stackTagCompound.getInteger("reload") == 0)
	{
		//coolDownStr = "Status: " + "\u00A72Armed";
	}
	else
	{
		//coolDownStr = "Status: \u00A74Reloading";
	}
}
@Override
public EnumRarity getRarity(ItemStack par1ItemStack) 
{
	return EnumRarity.uncommon;
}
}

DiabolusNeil · May 24, 2014

public ItemStack onItemRightClick(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer)
{
if( par1ItemStack.stackTagCompound == null )
	par1ItemStack.setTagCompound( new NBTTagCompound( ) );
if(par3EntityPlayer.isSneaking())
{
                // Here's your problem. Check to see if the world is NOT remote. if (!world.isRemote) { code }
	if(par2World.isRemote)
	{ ...

LazerMan47 · May 24, 2014

It works now, thx

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[1.7.2] [Unsolved] Item Modes Not Working On Server

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