/* static */ uint ScriptRail::GetRailTracks(TileIndex tile) { if (!IsRailTile(tile)) return RAILTRACK_INVALID; if (IsRailStationTile(tile) || IsRailWaypointTile(tile)) return ::TrackToTrackBits(::GetRailStationTrack(tile)); if (IsLevelCrossingTile(tile)) return ::GetCrossingRailBits(tile); if (IsRailDepotTile(tile)) return ::TRACK_BIT_NONE; return ::GetTrackBits(tile); }
/* static */ bool AIRail::BuildRailWaypoint(TileIndex tile) { EnforcePrecondition(false, ::IsValidTile(tile)); EnforcePrecondition(false, IsRailTile(tile)); EnforcePrecondition(false, GetRailTracks(tile) == RAILTRACK_NE_SW || GetRailTracks(tile) == RAILTRACK_NW_SE); EnforcePrecondition(false, IsRailTypeAvailable(GetCurrentRailType())); return AIObject::DoCommand(tile, GetCurrentRailType() | (GetRailTracks(tile) == RAILTRACK_NE_SW ? AXIS_X : AXIS_Y) << 4 | 1 << 8 | 1 << 16, STAT_CLASS_WAYP | INVALID_STATION << 16, CMD_BUILD_RAIL_WAYPOINT); }
/* static */ bool ScriptRail::AreTilesConnected(TileIndex from, TileIndex tile, TileIndex to) { if (!IsRailTile(tile)) return false; if (from == to || ScriptMap::DistanceManhattan(from, tile) != 1 || ScriptMap::DistanceManhattan(tile, to) != 1) return false; if (to < from) ::Swap(from, to); if (tile - from == 1) { if (to - tile == 1) return (GetRailTracks(tile) & RAILTRACK_NE_SW) != 0; if (to - tile == ::MapSizeX()) return (GetRailTracks(tile) & RAILTRACK_NE_SE) != 0; } else if (tile - from == ::MapSizeX()) { if (tile - to == 1) return (GetRailTracks(tile) & RAILTRACK_NW_NE) != 0; if (to - tile == 1) return (GetRailTracks(tile) & RAILTRACK_NW_SW) != 0; if (to - tile == ::MapSizeX()) return (GetRailTracks(tile) & RAILTRACK_NW_SE) != 0; } else { return (GetRailTracks(tile) & RAILTRACK_SW_SE) != 0; } NOT_REACHED(); }