Hello! I am making a technical mod, I know a lot in GUI, Models, Blocks, but I know a little bit in Items... =(

And I want to make a Battery that shows a Durability Bar and this bar represents it's energy like this photo:

http://vignette2.wikia.nocookie.net/mctechnicpack/images/6/6f/Powering_a_machine.png/revision/latest?cb=20120311220125[/img]

and when I add the item to the GUI(Allready made) you see the bar depleting just like some technical mods.(Like it is damaging the Item)

Thanks!

You can return whatever value you want for the durability bar. Use the showDurabilityBar and getDurabilityForDisplay methods in your Item for that.

I know about that, I've also created a ToolMaterial, but I can't assign a material to a normal Item that has no "abilities"(Sword, Hoe, Pickaxe...)

So How do I do that?

ScratchForFun on youtube actually made a few videos covering the creation of battery's and such. You should check them out!

ScratchForFun on youtube actually made a few videos covering the creation of battery's and such. You should check them out!

Allready checked! But they are [1.6.4] so It won't work on 1.7.10, also, I think I found a way...

This has nothing to do with a tool material or Item damage. In that 2nd method you posted you can return ANY value you want. Be it the actual damage value or some data you get out of the NBT of the ItemStack or even the current room temperature (in lack of a better example).

My idea was using a Material for the Item - MaxDurability as the MaxPower - Durability as CurrentPower - but  the way I found was: create 2 variables: MaxPower and Power both defined, then on getDurabilityBarForDisplay I divide them Power/MaxPower, it gives me what I want, but using another block, how can I change this variables?

Block is an item when in inventory. Extend an ItemBlock class and register your block with it. Then you could do the same thing as a normal Item.

Then if you want to change it, well, just change it.

 

Got It in a Very Very Very Stupid Way! I made the Item as a pickaxe and I used ToolMaterial in it adding Durability as Power, and when you add the Item to the GUI I made, it uses slot[0].setItemDamage(slot[0].getItemDamage() + 10) so it damages the item trought time it is there and add power, when the Item has no Durability it won't add. So, latest problem is: How can I slow down The For?!

 

For Code:
if(ItemStack.areItemStacksEqual(slots[0], new ItemStack(ITEM)))
{
	if(slots[0].getItemDamage() >= slots[0].getMaxDamage())
	{

	}
	else
	{
		for(i=0;i<10000;i++){
			power = power+1;
			slots[0].setItemDamage(slots[0].getItemDamage() + 1);
	}
}

How can I slow this down?

Also, make the ToolMaterial worse than Gold and Wood, it does no damaged to blocks!

Do not create a new ItemStack in order to compare the itemstack's item.  Use ItemStack.getItem()

I just want to slow down the power add, the ToolMaterial works for every block that needs power, but if I use as a normal variable, I can't change it using a TileEntity, that's why a ToolMaterial, also, I don't need to save things into NBTTAG, the game saves auto then.

You do not need to use ToolMaterial to use ItemDamage. Not sure I get what you said there with NBT.

About slowing it down, just increase/decrease less often (e.g. only every 3rd tick).

Just Inclrease/decreate what?

That's True I don't need to Use ToolMaterial Fort that... Trying with "setMaxDamage"

RESULT: Without ToolMaterial the game Crashes before Mojang Logo

RESULT: Without ToolMaterial the game Crashes before Mojang Logo

 

You're probably trying to extend ItemTool, which you do not need to do, in order for items to have durability.  ALL ITEMS have the possibility of having a damage value.

Sorry, it was a Stupid Error! =( I forgot to make if(slots[0] !=null) so then CRASH, but now worked, I used setMaxDamage(int); on the Item and it worked, perfectly! Now just need the "slow down" on the power adding(means that when I add power it will slowly add, not add in one single tick)

onUpdate {
takeALittlePower();
}

takeALittlePower() {
power += 1;
slot[0].damageItem(1);
}

onUpdate {
takeALittlePower();
}

takeALittlePower() {
power += 1;
slot[0].damageItem(1);
}

Thanks For that! Worked!