Method BeforeAddTile

src/station.cpp:575–607

}

CommandCost StationRect::BeforeAddTile(TileIndex tile, StationRectMode mode)
{
	int x = TileX(tile);
	int y = TileY(tile);
	if (this->IsEmpty()) {
		/* we are adding the first station tile */
		if (mode != ADD_TEST) {
			this->left = this->right = x;
			this->top = this->bottom = y;
		}
	} else if (!this->PtInExtendedRect(x, y)) {
		/* current rect is not empty and new point is outside this rect
		 * make new spread-out rectangle */
		Rect new_rect = {std::min(x, this->left), std::min(y, this->top), std::max(x, this->right), std::max(y, this->bottom)};

		/* check new rect dimensions against preset max */
		int w = new_rect.Width();
		int h = new_rect.Height();
		if (mode != ADD_FORCE && (w > _settings_game.station.station_spread || h > _settings_game.station.station_spread)) {
			assert(mode != ADD_TRY);
			return CommandCost(STR_ERROR_STATION_TOO_SPREAD_OUT);
		}

		/* spread-out ok, return true */
		if (mode != ADD_TEST) {
			/* we should update the station rect */
			*this = new_rect;
		}
	} else {
		; // new point is inside the rect, we don't need to do anything
	}
	return CommandCost();
}

CommandCost StationRect::BeforeAddRect(TileIndex tile, int w, int h, StationRectMode mode)
{