/** Obtain the length of a platform

 * @pre tile must be a railway station tile

 * @param tile A tile that contains the platform in question

 * @returns The length of the platform

 */

uint Station::GetPlatformLength(TileIndex tile) const

{

	TileIndex t;

	TileIndexDiff delta;

	uint len = 0;

	assert(TileBelongsToRailStation(tile));

	delta = (GetRailStationAxis(tile) == AXIS_X ? TileDiffXY(1, 0) : TileDiffXY(0, 1));

	t = tile;

	do {

		t -= delta;

		len++;

	} while (IsCompatibleTrainStationTile(t, tile));

	t = tile;

	do {

		t += delta;

		len++;

	} while (IsCompatibleTrainStationTile(t, tile));

	return len - 1;

}

/** Determines the REMAINING length of a platform, starting at (and including)

 * the given tile.

 * @param tile the tile from which to start searching. Must be a railway station tile

 * @param dir The direction in which to search.

 * @return The platform length

 */

uint Station::GetPlatformLength(TileIndex tile, DiagDirection dir) const

{

	TileIndex start_tile = tile;

	uint length = 0;

	assert(IsRailwayStationTile(tile));

	assert(dir < DIAGDIR_END);

	do {

		length ++;

		tile += TileOffsByDiagDir(dir);

	} while (IsCompatibleTrainStationTile(tile, start_tile));

	return length;

}