Function paintBogie

src/OpenLoco/src/Paint/PaintVehicle.cpp:85–220

0x004B0CFC

    // 0x004B0CFC
    static void paintBogie(PaintSession& session, VehicleBogie* bogie)
    {
        auto* vehObject = ObjectManager::get<VehicleObject>(bogie->objectId);
        if (bogie->objectSpriteType == SpriteIndex::null)
        {
            return;
        }

        auto& sprite = vehObject->bogieSprites[bogie->objectSpriteType];
        uint8_t yaw = (bogie->spriteYaw + (session.getRotation() << 4)) & 0x3F;
        auto pitch = bogie->spritePitch;

        if (bogie->has38Flags(Flags38::isReversed))
        {
            // Flip the highest bit to reverse the yaw
            yaw ^= (1 << 5);
            pitch = kReversePitch[static_cast<uint8_t>(bogie->spritePitch)];
        }
        auto yawIndex = (yaw >> 1) & 0x1F;

        switch (pitch)
        {
            case Pitch::flat:
            case Pitch::up12deg:
            case Pitch::up10deg:
            case Pitch::up25deg:
            case Pitch::up20deg:
                break;
            default:
                if (sprite.hasFlags(BogieSpriteFlags::rotationalSymmetry))
                {
                    // Rotational symmetry will have 1 fewer bits of yaw
                    yawIndex ^= (1 << 4);
                }
                else
                {
                    yawIndex ^= (1 << 5);
                }
                break;
        }
        switch (pitch)
        {
            case Pitch::flat:
            {
                if (sprite.hasFlags(BogieSpriteFlags::rotationalSymmetry))
                {
                    yawIndex &= 0xF;
                }
                const auto imageIndex = sprite.numFramesPerRotation * yawIndex + bogie->animationIndex + sprite.flatImageIds;
                ImageId imageId{};
                if (bogie->has38Flags(Flags38::isGhost))
                {
                    session.setItemType(Ui::ViewportInteraction::InteractionItem::noInteraction);
                    imageId = Gfx::applyGhostToImage(imageIndex);
                }
                else if (bogie->hasVehicleFlags(VehicleFlags::unk_5))
                {
                    imageId = ImageId(imageIndex, ExtColour::unk74);