[1.8.8] [SOLVED] Overlay String on itemstack

[ADonkeyTaboggan]

Hi there,

 

Is it possible to render text on item textures like this: http://i.imgur.com/Y0k4yEN.png (made in paint.net). Would this just be the case of using RenderGameOverlay and scaling down the text and making the pos the current hotbar slot? or is there a better way.

 

Thanks for your time.

 

Edit: I'm pretty sure RenderGameOverlay won't work because if I opened my inventory, that guiscreen(I think thats what it is anyway) would be a "higher" "layer". I would also like to draw text on items in my main inventory (Not just hotbar). My guess/assumption is it could be done by overlaying text on the item texture? not sure though.

 

Again, thanks if anyone checked out the thread.

[Ernio]

1. If you want items to render like that for any possible gui (mod or not) then only way would be to ASM vanilla rendering methods.

 

2. If you want to do this per-gui, e.g be ONLY rendering like that in GameOverlay (normal game view) then you would have to use RenderGameOverlay and cancel hotbar rendering, then basically re-render it yourself using vanilla-like methods (I mean - literally copy rendering methods and edit them to display additional stuff).

 

3. You can try tricks like that for any known gui (inventory, creative, furnace, workbench, etc...) by replacing its GUI with OpenGui event (not sure naming), but that will always require you to remake stuff and will be incomatybile with other mods that do similar.

 

So basically - yeah: ASM (1) or not-fully-gratifying-simple-solution (2) or crazy-works-of-a-mad-man (3) (you don't want this).

 

EDIT

Additional note, since all that is not strongly backed by MC source. It might be that 2D item rendering methods are defined in instance object (meaning, they are not static). In that case you could replace (game startup) given object with your own extension that applies changes to some methods.

[ADonkeyTaboggan]

Thanks for the detailed reply!

 

So to sum up what I'm trying to do: I want to render the remaining durability "on top" of every item that the player has that has durability. I think making this work on EVERY gui is a little overkill for a small tweak (visually anyway) that this is, so I would probably be happy for it just to render when the player is looking at their own inventory. So the two situations would be:

 

1: Looking in your own inventory (not even player inventories attached to other guis).

2: Rendering the damage of items on the hotbar in the GameOverlay.

 

For situation 2, I pretty much know how to achieve that, would handling situation 1 be the same as your 3rd method?

 

Again, thanks for the time.

 

Edit: Wording

[Draco18s]

Solution 3 is writing new classes and replacing things when the player opens a GUI.  You'd have to write a new ChestGUI, new WorkbenchGUI, FurnaceGui, InventoryGUI, and so on.

 

Solution 1 will always show the additional text, doesn't matter who's gui, where it is, anything.

 

Just because of what you're trying to do, I actually would recommend looking into ASMing the item renderer function.  It's not only the simplest, but most effective.

[Ernio]

  On 1/9/2016 at 8:05 PM, Ernio said:

2. If you want to do this per-gui, e.g be ONLY rendering like that in GameOverlay (normal game view) then you would have to use RenderGameOverlay and cancel hotbar rendering, then basically re-render it yourself using vanilla-like methods (I mean - literally copy rendering methods and edit them to display additional stuff).

 

3. You can try tricks like that for any known gui (inventory, creative, furnace, workbench, etc...) by replacing its GUI with OpenGui event (not sure naming), but that will always require you to remake stuff and will be incomatybile with other mods that do similar.

 

2. Tells you quite well what to do (been there, done that).

 

3. Also tells you quite well what to do. To be more helpful: You want to extends GuiInventory.class and:

- Normally I'd say: "drawSlot" - but it's private, so that gives us bigger problems with hackier solutions:

- Override "public void drawScreen(int mouseX, int mouseY, float partialTicks)". drawScreen handles a lot of stuff, which also includes calling this thing:

for (int i1 = 0; i1 < this.inventorySlots.inventorySlots.size(); ++i1)
        {
            Slot slot = (Slot)this.inventorySlots.inventorySlots.get(i1);
            this.drawSlot(slot); /////////////////////////////////////////////// THIS THING!

            if (this.isMouseOverSlot(slot, mouseX, mouseY) && slot.canBeHovered())
            {
                this.theSlot = slot;
                GlStateManager.disableLighting();
                GlStateManager.disableDepth();
                int j1 = slot.xDisplayPosition;
                k1 = slot.yDisplayPosition;
                GlStateManager.colorMask(true, true, true, false);
                this.drawGradientRect(j1, k1, j1 + 16, k1 + 16, -2130706433, -2130706433);
                GlStateManager.colorMask(true, true, true, true);
                GlStateManager.enableLighting();
                GlStateManager.enableDepth();
            }
        }

 

So in your extending class you will want to literally copy drawScreen method from super class (mind that GuiInventory extends InventoryEffectRenderer extends GuiContainer which requires you to ALSO copy code from InventoryEffectRenderer#drawScreen).

 

Then on stage of calling this.drawSlot, you will simply make a call to custom-made method that will be (literally) a copy of vanilla method (the private one) with small change as to what to render (add your string rendering there).

 

As said - to actually replace Gui with another Gui you need to use proper event in which you will open your custom extension instead of vanilla. (search in client events, I don't remember exact event names, but somewhere aroung OpenGuiEvent).

 

That's it. Similar logic goes with (2.) - look how GuiIngame (GuiIngameForge? I don't remember now.) handles hotbar.

 

 

*Insta-read Draco's post*

Goddamit, well-said (true that). But alredy wrote that shit above so here it goes.

 

EDIT

Oh and P.S: If you decide to go with ASM - yeah, you want to manipulate GuiContainer#drawSlot or replace call to it in GuiContainer#drawScreen with call to your custom method. (I mean, that would do nicely for all containers in game , but there are more cases).

[ADonkeyTaboggan]

Thanks both of you for your help.

 

I have briefly looked into ASM and I feel it's a little overkill for what I'm trying to achieve (Also past my Java knowledge)

 

I decided to implement the feature on the GameOverlay: http://i.imgur.com/AduYrDh.png and it works great but with one problem. The text renders behind the items (You probably noticed that though). is there a way in the RenderGameOverlay to specify zIndex?

 

And again, thanks for everybodys help. It will be really helpful in future if I want to implement something that requires ASM.

[shadowfacts]

You can use GlStateManager to translate the text like so:

 

GlStateManager.pushMatrix();
GlStateManager.translatef(0, 0, 50);
// draw text
GlStateManager.popMatrix();

 

To those whom it may concern, perhaps there could be an ItemStackRenderEvent fired every time an ItemStack is rendered, no matter what inventory.

[Draco18s]

  On 1/9/2016 at 11:13 PM, ADonkeyTaboggan said:

I have briefly looked into ASM and I feel it's a little overkill for what I'm trying to achieve (Also past my Java knowledge)

 

ASM is very powerful and very hard to think in terms of writing.  Everyone who does it inserts as extremely few bytes as possible, usually an INVOKE_VIRTUAL call to a static method that you can write in regular Java.

[ADonkeyTaboggan]

  On 1/10/2016 at 1:30 AM, shadowfacts said:

To those whom it may concern, perhaps there could be an ItemStackRenderEvent fired every time an ItemStack is rendered, no matter what inventory.

 

I can't seem to find a reference to this event?

[Choonster]

  On 1/10/2016 at 3:38 AM, ADonkeyTaboggan said:

  Quote

To those whom it may concern, perhaps there could be an ItemStackRenderEvent fired every time an ItemStack is rendered, no matter what inventory.

 

I can't seem to find a reference to this event?

 

That's because it doesn't exist. shadowfacts was suggesting it be added to Forge.

[ADonkeyTaboggan]

Oh whoops, I read his reply incorrectly. However it does sound like a great idea for rendering to all itemstacks easily.

 

Also using GlStateManager.translate solved my problem with the text rendering.. Thanks everyone for their input.