I wondered, how to detect, if a player leftclicks my item inside of my item class... if you say that doesn't work I'll use an EventHandler.

no answer?

@Override
public boolean onEntitySwing(EntityLivingBase entityLiving, ItemStack stack){
EntityPlayer player = (EntityPlayer)entityLiving;
Vec3 look = player.getLookVec();
EntityLargeFireball fireball = new EntityLargeFireball(player.getEntityWorld(), player, 1, 1, 1);
fireball.setPosition(player.posX + look.xCoord * 5, player.posY + look.yCoord * 5, player.posZ + look.zCoord * 5);
fireball.accelerationX = look.xCoord * 0.1;
fireball.accelerationY = look.yCoord * 0.1;
fireball.accelerationZ = look.zCoord * 0.1;
player.getEntityWorld().spawnEntityInWorld(fireball);

return false;
}

 

somehow this spawns 2 fireballs everytime i leftclick with the item... It's not all the code, but the rest is only some nbt thing to make sure there is only every third time spawning a fireball, but it's only a few if statements and no loops, so it shouldn't be the source of the second fireball.

so a simple if statement testing

!world.isRemote

should do it?

Just found another problem:

 

When I'm looking at a block while leftclicking it spawns a fireball everytime... no matter, what the nbtTag says. (like mentioned, it should only do it every third time) I generally want to prevent spawning a fireball when looking at a block, so that the player doesn't blow himself up.

@Override
public boolean onEntitySwing(EntityLivingBase entityLiving, ItemStack stack)
{
if(entityLiving instanceof EntityPlayer){
	EntityPlayer player = (EntityPlayer)entityLiving;

	NBTTagCompound nbtTag = stack.getTagCompound();
	if (nbtTag == null) {
		nbtTag = new NBTTagCompound();
		stack.setTagCompound(nbtTag);
	}


	if(nbtTag.getString("one") == "Left"){
		if((nbtTag.getString("two") == "Left") || (nbtTag.getString("two") == "Right")){
			nbtTag.setString("three", "Left");
		}
		else{
			nbtTag.setString("two", "Left");
		}
	}
	else{
		nbtTag.setString("one", "Left");
	}		

	if(nbtTag.getString("one") != "" && nbtTag.getString("two") != "" && nbtTag.getString("three") != ""){
		if(nbtTag.getString("one") == "Left" && nbtTag.getString("two") == "Left" && nbtTag.getString("three") == "Left"){
			Vec3 look = player.getLookVec();
			EntityLargeFireball fireball = new EntityLargeFireball(player.getEntityWorld(), player, 1, 1, 1);
			fireball.setPosition(player.posX + look.xCoord * 5, player.posY + look.yCoord * 5, player.posZ + look.zCoord * 5);
			fireball.accelerationX = look.xCoord * 0.1;
			fireball.accelerationY = look.yCoord * 0.1;
			fireball.accelerationZ = look.zCoord * 0.1;
			if(!player.getEntityWorld().isRemote){
				player.getEntityWorld().spawnEntityInWorld(fireball);
			}
			nbtTag.setString("one", "");
			nbtTag.setString("two", "");
			nbtTag.setString("three", "");
		}
	}
        return false;
}
return false;
}

 

the thing with the 3 nbtTags is because i got a similar thing in the Overridden onItemRightClick-method. to make spells

the code works fine except when i'm looking on a block; in all the other cases i don't care