How to use item.icons?

[FuryoftheStars]

Was wondering if someone could give me a quick rundown on how to properly use the icons property on items?

Basically, I'm looping through all items, and for each one that has a fuel_category of "chemical", I'm creating a new recipe and item that takes this item as an input. But I'm going to need different icons for them all so they are distinguishable from each other as they'll have different fuel_value(s) themselves based on the input item. I was thinking of just simply using the compilatron-chest.png icon for the base icon, then layer the fuel icon on top of it (though ideally I'd want to shrink it some) and want it to work with mod added fuels.

It's either that or I just use 1 output item with just the one fuel_value from multiple recipes and just scale the input quantity of the fuel item based on its fuel_value, but that seems boring and restrictive. :/

[Silari]

Can't really give a rundown right now, but I CAN copy/paste the code I use to do a similar thing for Asteroid Mining

Code: Select all

--This is to generate the layered icons for the mining module, or whatever else needs it
function advancedicon(name, atint)
    --log("Making " .. name .. " " .. serpent.block(data.raw.item[name]))
    if data.raw.resource[name] then -- EVERYTHING we generate should be a resource
        itempath = data.raw.resource
    elseif data.raw.item[name] then -- We can try an item form.
        itempath = data.raw.item
    else -- Tenemut is a tool so try that?
        itempath = data.raw.tool
    end
    icon = itempath[name].icon
    iconsize = itempath[name].icon_size
    iconmip = itempath[name].icon_mipmaps
    tint = nil --Non-layered doesn't seem to support tints
    --For layered icons, get the first layer for now
    if icon == nil then
        icon = itempath[name].icons[1].icon
        if not iconsize then
            iconsize = itempath[name].icons[1].icon_size
        end
        iconmip = itempath[name].icons[1].icon_mipmaps
        tint = itempath[name].icons[1].tint
    end
    --The return is our layered icons we'll set to the new items .icons property.
    return {
        {
            icon = "__Asteroid_Mining__/graphics/mining-sat.png",
            icon_mipmaps = 4,
            icon_size = 64
        },
        {
            icon = "__Asteroid_Mining__/graphics/mining-sat-mask2.png",
            icon_mipmaps = 4,
            icon_size = 64,
            tint = atint
        },
        {
            icon = icon,
            --icon_mipmaps = 4, --For now, no mipmaps
            icon_size = iconsize,
            scale = 16/iconsize, --They should be 16 pixels
            shift = {
                -8,
                8
            },
            tint = tint
        }
    }
end

Should give you an idea on how to do it for your case. Note the shift + scale in the last layer - scale is how you resize the layer, and shift lets you place the layer within your icon. IIRC it starts centered in the icon, and this shifts it down and left 8 pixels each.

Each layer is drawn on top of the previous in order they appear in the table.

[FuryoftheStars]

Awesome, thanks! Just the stuff I was looking for!

[FuryoftheStars]

Ok, I just need to play around with the scaling and offsets to get my desired effect, but otherwise it works! Thanks again!

Icons.png (10.64 KiB) Viewed 758 times