/**
* If required, connects a new structure to an existing road or tram by building the missing roadbit.
* @param tile Tile containing the structure to connect.
* @param direction Direction to check.
*/
void ConnectRoadToStructure(TileIndex tile, DiagDirection direction)
{
tile += TileOffsByDiagDir(direction);
/* if there is a roadpiece just outside of the station entrance, build a connecting route */
if (IsNormalRoadTile(tile)) {
if (GetRoadBits(tile, _cur_roadtype) != ROAD_NONE) {
DoCommandP(tile, _cur_roadtype << 4 | DiagDirToRoadBits(ReverseDiagDir(direction)), 0, CMD_BUILD_ROAD);
}
}
}
/** Tests if a tile is a road tile with a single tramtrack (tram can reverse) */
static DiagDirection GetSingleTramBit(TileIndex tile)
{
if (IsNormalRoadTile(tile)) {
RoadBits rb = GetRoadBits(tile, ROADTYPE_TRAM);
switch (rb) {
case ROAD_NW: return DIAGDIR_NW;
case ROAD_SW: return DIAGDIR_SW;
case ROAD_SE: return DIAGDIR_SE;
case ROAD_NE: return DIAGDIR_NE;
default: break;
}
}
return INVALID_DIAGDIR;
}
/** Tests if a tile is a road tile with a single tramtrack (tram can reverse) */
FORCEINLINE DiagDirection GetSingleTramBit(TileIndex tile)
{
assert(IsTram()); // this function shouldn't be called in other cases
if (IsNormalRoadTile(tile)) {
RoadBits rb = GetRoadBits(tile, ROADTYPE_TRAM);
switch (rb) {
case ROAD_NW: return DIAGDIR_NW;
case ROAD_SW: return DIAGDIR_SW;
case ROAD_SE: return DIAGDIR_SE;
case ROAD_NE: return DIAGDIR_NE;
default: break;
}
}
return INVALID_DIAGDIR;
}
