Method updateCargoSprite

src/OpenLoco/src/Vehicles/VehicleBody.cpp:1390–1416

0x004AC039 Note: Vanilla often called this from bogies which would just return immediately

    // Note: Vanilla often called this from bogies which would
    // just return immediately
    void VehicleBody::updateCargoSprite()
    {
        if (objectSpriteType == 0xFF)
        {
            return;
        }
        if (primaryCargo.maxQty == 0)
        {
            return;
        }

        const auto* vehicleObj = getObject();
        auto& bodySprite = vehicleObj->bodySprites[objectSpriteType];

        auto percentageFull = std::min((primaryCargo.qty * 256) / primaryCargo.maxQty, 255);
        auto spriteIndex = (percentageFull * bodySprite.numCargoLoadFrames) / 256;
        if (spriteIndex != 0)
        {
            spriteIndex += vehicleObj->cargoTypeSpriteOffsets[primaryCargo.type];
        }
        spriteIndex *= bodySprite.numAnimationFrames;
        if (spriteIndex != cargoFrame)
        {
            cargoFrame = spriteIndex;
            invalidateSprite();
        }
    }

    // 0x0042F6B6
    // TODO: move this?