[1.19.2] Using custom unicode in a tooltip

[SoLegendary]

I've got working code to render a tooltip, and I have a folder full of icons that I want to turn into unicode symbols in my tooltip.

I know that with resourcepacks this is possible, as seen in this video but I don't want to have users of my mod download and install a resourcepack separately.

I have this JSON file at resources/assets/reignofnether/fonts/resource_icons.json

{
    "providers": [
        {
            "type": "bitmap",
            "file": "reignofnether/textures/icons/items/wheat.png",
            "ascent": 9,
            "height": 9,
            "chars": ["\uE000"]
        },
        {
            "type": "bitmap",
            "file": "reignofnether/textures/icons/items/wood.png",
            "ascent": 9,
            "height": 9,
            "chars": ["\uE001"]
        }
    ]
}

And tried using it with this code:

List<FormattedCharSequence> tooltipLines = List.of(
  List.of(FormattedCharSequence.forward(
    "\uE000 \uE001 test regular text",
    Style.EMPTY.withFont(new ResourceLocation(ReignOfNether.MOD_ID, "textures/fonts/resource_icons.json"))))
)
MC.screen.renderTooltip(poseStack, tooltipLines, mouseX, mouseY, MC.font);

But all I get are invalid characters like this:

[warjort]

You know your mod is already a resource pack? That's how you define other assets like textures and models for your blocks/items.

I also don't think you should be including .json in ResourceLocation path and...

The only place I can see in vanilla that uses Style.withFont() is in EnchantmentNames which references assets/minecraft/font/alt.json using

new ResourceLocation("minecraft", "alt")

 

Beyond that I know very little about what you are trying to do.

Except maybe you want to look at the RegisterClientTooltipComponentFactoriesEvent

which is forge's registration method for things that want to do custom rendering like the vanilla bundle tooltip does - see ClientBundleToolTip and related classes.

[warjort]

in case it wasn't clear, I don't think it will load your font unless it is in assets/yourmodid/font/ ?

[SoLegendary]

To anyone who is trying to do this I solved it - the issue was purely bad paths.

I moved my resource_icons.json to assets/<modid>/font/ and changed the file lines to this style:

"file": "reignofnether:icons/items/wheat.png",

The ResourceLocation in my withFont() call is now:

new ResourceLocation(ReignOfNether.MOD_ID, "resource_icons")))

Thanks for the help @warjort, but now do you know how to mix multiple fonts on the same line in a tooltip? When I mix regular text with this unicode mapping on one line the regular text just shows as rectangle (and I really don't want to have to remap all letters and numbers manually in my JSON)

EDIT: nevermind, realised I can just copy the vanilla MC's default.json mapping for ASCII characters:

        {
            "type": "bitmap",
            "file": "minecraft:font/ascii.png",
            "ascent": 7,
            "chars": [
                "\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000",
                "\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000",
                "\u0020\u0021\u0022\u0023\u0024\u0025\u0026\u0027\u0028\u0029\u002a\u002b\u002c\u002d\u002e\u002f",
                "\u0030\u0031\u0032\u0033\u0034\u0035\u0036\u0037\u0038\u0039\u003a\u003b\u003c\u003d\u003e\u003f",
                "\u0040\u0041\u0042\u0043\u0044\u0045\u0046\u0047\u0048\u0049\u004a\u004b\u004c\u004d\u004e\u004f",
                "\u0050\u0051\u0052\u0053\u0054\u0055\u0056\u0057\u0058\u0059\u005a\u005b\u005c\u005d\u005e\u005f",
                "\u0060\u0061\u0062\u0063\u0064\u0065\u0066\u0067\u0068\u0069\u006a\u006b\u006c\u006d\u006e\u006f",
                "\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007a\u007b\u007c\u007d\u007e\u0000",
                "\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000",
                "\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u00a3\u0000\u0000\u0192",
                "\u0000\u0000\u0000\u0000\u0000\u0000\u00aa\u00ba\u0000\u0000\u00ac\u0000\u0000\u0000\u00ab\u00bb",
                "\u2591\u2592\u2593\u2502\u2524\u2561\u2562\u2556\u2555\u2563\u2551\u2557\u255d\u255c\u255b\u2510",
                "\u2514\u2534\u252c\u251c\u2500\u253c\u255e\u255f\u255a\u2554\u2569\u2566\u2560\u2550\u256c\u2567",
                "\u2568\u2564\u2565\u2559\u2558\u2552\u2553\u256b\u256a\u2518\u250c\u2588\u2584\u258c\u2590\u2580",
                "\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u2205\u2208\u0000",
                "\u2261\u00b1\u2265\u2264\u2320\u2321\u00f7\u2248\u00b0\u2219\u0000\u221a\u207f\u00b2\u25a0\u0000"
            ]
        },

 

Edited October 30, 2022 by SoLegendary
solved it