if (HasTileWaterClass(tile) && GetWaterClass(tile) == WATER_CLASS_CANAL) { if (!IsTileType(tile, MP_INDUSTRY)) { Owner o1 = GetTileOwner(tile); if (o1 != OWNER_NONE) { ret = CheckTileOwnership(tile); if (ret.Failed()) return ret; } } } if (!IsWaterTile(tile)) { ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR); if (ret.Failed()) return ret; cost.AddCost(ret); cost.AddCost(_price[PR_BUILD_CANAL]); }