Method GetDisplayImageWidth

src/train_cmd.cpp:460–480

* Get the width of a train vehicle image in the GUI. * @param offset Additional offset for positioning the sprite; set to nullptr if not needed * @return Width in pixels */

 * @return Width in pixels
 */
int Train::GetDisplayImageWidth(Point *offset) const
{
	int reference_width = TRAININFO_DEFAULT_VEHICLE_WIDTH;
	int vehicle_pitch = 0;

	const Engine *e = this->GetEngine();
	if (e->GetGRF() != nullptr && IsCustomVehicleSpriteNum(e->VehInfo<RailVehicleInfo>().image_index)) {
		reference_width = e->GetGRF()->traininfo_vehicle_width;
		vehicle_pitch = e->GetGRF()->traininfo_vehicle_pitch;
	}

	if (offset != nullptr) {
		if (this->flags.Test(VehicleRailFlag::Flipped) && !EngInfo(this->engine_type)->misc_flags.Test(EngineMiscFlag::RailFlips)) {
			offset->x = ScaleSpriteTrad(((int)this->gcache.cached_veh_length - (int)VEHICLE_LENGTH / 2) * reference_width / (int)VEHICLE_LENGTH);
		} else {
			offset->x = ScaleSpriteTrad(reference_width) / 2;
		}
		offset->y = ScaleSpriteTrad(vehicle_pitch);
	}
	return ScaleSpriteTrad(this->gcache.cached_veh_length * reference_width / VEHICLE_LENGTH);
}

static SpriteID GetDefaultTrainSprite(uint8_t spritenum, Direction direction)
{