/**
* Make a water lock.
* @param t Tile to place the water lock section.
* @param o Owner of the lock.
* @param d Direction of the water lock.
* @param wc_lower Original water class of the lower part.
* @param wc_upper Original water class of the upper part.
* @param wc_middle Original water class of the middle part.
*/
/*inline*/
public static void MakeLock(TileIndex t, Owner o, DiagDirection d, WaterClass wc_lower, WaterClass wc_upper,
WaterClass wc_middle)
{
TileIndexDiff delta = Map.TileOffsByDiagDir(d);
/* Keep the current waterclass and owner for the tiles.
* It allows to restore them after the lock is deleted */
MakeLockTile(t, o, LockPart.LOCK_PART_MIDDLE, d, wc_middle);
MakeLockTile((uint)(t - delta), IsWaterTile((uint)(t - delta)) ? TileMap.GetTileOwner((uint)(t - delta)) : o, LockPart.LOCK_PART_LOWER, d, wc_lower);
MakeLockTile((uint)(t + delta), IsWaterTile((uint)(t + delta)) ? TileMap.GetTileOwner((uint)(t + delta)) : o, LockPart.LOCK_PART_UPPER, d, wc_upper);
}
/**
* Finds the end of a bridge in the specified direction starting at a middle tile
* @param tile the bridge tile to find the bridge ramp for
* @param dir the direction to search in
*/
public static TileIndex GetBridgeEnd(TileIndex tile, DiagDirection dir)
{
TileIndexDiff delta = Map.TileOffsByDiagDir(dir);
dir = dir.ReverseDiagDir();
do
{
tile += (uint)delta.Difference;
} while (!IsBridgeTile(tile) || GetTunnelBridgeDirection(tile) != dir);
return(tile);
}
/**
* Is there a tunnel in the way in the given direction?
* @param tile the tile to search from.
* @param z the 'z' to search on.
* @param dir the direction to start searching to.
* @return true if and only if there is a tunnel.
*/
public static bool IsTunnelInWayDir(this TileIndex tile, int z, DiagDirection dir)
{
TileIndexDiff delta = TileOffsByDiagDir(dir);
int height;
do
{
tile -= delta;
if (!TileMap.IsValidTile(tile))
{
return(false);
}
height = TileMap.GetTileZ(tile);
} while (z < height);
return(z == height && IsTunnelTile(tile) && GetTunnelBridgeDirection(tile) == dir);
}
/**
* Gets the other end of the tunnel. Where a vehicle would reappear when it
* enters at the given tile.
* @param tile the tile to search from.
* @return the tile of the other end of the tunnel.
*/
public static TileIndex GetOtherTunnelEnd(this TileIndex tile)
{
DiagDirection dir = GetTunnelBridgeDirection(tile);
TileIndexDiff delta = TileOffsByDiagDir(dir);
int z = TileMap.GetTileZ(tile);
dir = ReverseDiagDir(dir);
do
{
tile += delta;
} while (
!IsTunnelTile(tile) ||
GetTunnelBridgeDirection(tile) != dir ||
TileMap.GetTileZ(tile) != z
);
return(tile);
}
