(svn r1696) Use GetTileSlope() instead of FindLandscapeHeightByTile() where it is sufficient. FindLandscapeHeightByTile() uses GetTileSlope() internally and adds some more info, which is discarded in these cases.
While touching the code make a bit more clear how GetBridgeHeight() works.
#ifndef COMMAND_H
#define COMMAND_H
enum {
CMD_BUILD_RAILROAD_TRACK = 0,
CMD_REMOVE_RAILROAD_TRACK = 1,
CMD_BUILD_SINGLE_RAIL = 2,
CMD_REMOVE_SINGLE_RAIL = 3,
CMD_LANDSCAPE_CLEAR = 4,
CMD_BUILD_BRIDGE = 5,
CMD_BUILD_RAILROAD_STATION = 6,
CMD_BUILD_TRAIN_DEPOT = 7,
CMD_BUILD_SIGNALS = 8,
CMD_REMOVE_SIGNALS = 9,
CMD_TERRAFORM_LAND = 10,
CMD_PURCHASE_LAND_AREA = 11,
CMD_SELL_LAND_AREA = 12,
CMD_BUILD_TUNNEL = 13,
CMD_REMOVE_FROM_RAILROAD_STATION = 14,
CMD_CONVERT_RAIL = 15,
CMD_BUILD_TRAIN_WAYPOINT = 16,
CMD_RENAME_WAYPOINT = 17,
CMD_REMOVE_TRAIN_WAYPOINT = 18,
CMD_BUILD_TRUCK_STATION = 19,
CMD_BUILD_BUS_STATION = 21,
CMD_BUILD_LONG_ROAD = 23,
CMD_REMOVE_LONG_ROAD = 24,
CMD_BUILD_ROAD = 25,
CMD_REMOVE_ROAD = 26,
CMD_BUILD_ROAD_DEPOT = 27,
CMD_BUILD_AIRPORT = 29,
CMD_BUILD_DOCK = 30,
CMD_BUILD_SHIP_DEPOT = 31,
CMD_BUILD_BUOY = 32,
CMD_PLANT_TREE = 33,
CMD_BUILD_RAIL_VEHICLE = 34,
CMD_MOVE_RAIL_VEHICLE = 35,
CMD_START_STOP_TRAIN = 36,
CMD_SELL_RAIL_WAGON = 38,
CMD_TRAIN_GOTO_DEPOT = 39,
CMD_FORCE_TRAIN_PROCEED = 40,
CMD_REVERSE_TRAIN_DIRECTION = 41,
CMD_MODIFY_ORDER = 42,
CMD_SKIP_ORDER = 43,
CMD_DELETE_ORDER = 44,
CMD_INSERT_ORDER = 45,
CMD_CHANGE_TRAIN_SERVICE_INT = 46,
CMD_BUILD_INDUSTRY = 47,
CMD_BUILD_COMPANY_HQ = 48,
CMD_SET_PLAYER_FACE = 49,
CMD_SET_PLAYER_COLOR = 50,
CMD_INCREASE_LOAN = 51,
CMD_DECREASE_LOAN = 52,
CMD_WANT_ENGINE_PREVIEW = 53,
CMD_NAME_VEHICLE = 54,
CMD_RENAME_ENGINE = 55,
CMD_CHANGE_COMPANY_NAME = 56,
CMD_CHANGE_PRESIDENT_NAME = 57,
CMD_RENAME_STATION = 58,
CMD_SELL_AIRCRAFT = 59,
CMD_START_STOP_AIRCRAFT = 60,
CMD_BUILD_AIRCRAFT = 61,
CMD_SEND_AIRCRAFT_TO_HANGAR = 62,
CMD_CHANGE_AIRCRAFT_SERVICE_INT = 63,
CMD_REFIT_AIRCRAFT = 64,
CMD_PLACE_SIGN = 65,
CMD_RENAME_SIGN = 66,
CMD_BUILD_ROAD_VEH = 67,
CMD_START_STOP_ROADVEH = 68,
CMD_SELL_ROAD_VEH = 69,
CMD_SEND_ROADVEH_TO_DEPOT = 70,
CMD_TURN_ROADVEH = 71,
CMD_CHANGE_ROADVEH_SERVICE_INT = 72,
CMD_PAUSE = 73,
CMD_BUY_SHARE_IN_COMPANY = 74,
CMD_SELL_SHARE_IN_COMPANY = 75,
CMD_BUY_COMPANY = 76,
CMD_BUILD_TOWN = 77,
CMD_RENAME_TOWN = 80,
CMD_DO_TOWN_ACTION = 81,
CMD_SET_ROAD_DRIVE_SIDE = 82,
CMD_SET_TOWN_NAME_TYPE = 83,
CMD_CHANGE_DIFFICULTY_LEVEL = 85,
CMD_START_STOP_SHIP = 86,
CMD_SELL_SHIP = 87,
CMD_BUILD_SHIP = 88,
CMD_SEND_SHIP_TO_DEPOT = 89,
CMD_CHANGE_SHIP_SERVICE_INT = 90,
CMD_REFIT_SHIP = 91,
CMD_START_NEW_GAME = 92,
CMD_LOAD_GAME = 93,
CMD_CREATE_SCENARIO = 94,
CMD_SET_SINGLE_PLAYER = 95,
CMD_SET_NEW_LANDSCAPE_TYPE = 97,
CMD_GEN_RANDOM_NEW_GAME = 98,
CMD_CLONE_ORDER = 99,
CMD_CLEAR_AREA = 100,
CMD_RESUME = 101,
CMD_MONEY_CHEAT = 102,
CMD_BUILD_CANAL = 103,
CMD_PLAYER_CTRL = 104, // used in multiplayer to create a new player etc.
CMD_LEVEL_LAND = 105, // level land
CMD_REFIT_RAIL_VEHICLE = 106,
CMD_RESTORE_ORDER_INDEX = 107,
CMD_BUILD_LOCK = 108,
CMD_START_SCENARIO = 109,
CMD_BUILD_MANY_SIGNALS = 110,
//CMD_DESTROY_INDUSTRY = 109,
CMD_DESTROY_COMPANY_HQ = 111,
CMD_GIVE_MONEY = 112,
CMD_CHANGE_PATCH_SETTING = 113,
CMD_REPLACE_VEHICLE = 114,
};
enum {
DC_EXEC = 1,
DC_AUTO = 2, // don't allow building on structures
DC_QUERY_COST = 4, // query cost only, don't build.
DC_NO_WATER = 8, // don't allow building on water
DC_NO_RAIL_OVERLAP = 0x10, // don't allow overlap of rails (used in buildrail)
DC_AI_BUILDING = 0x20, // special building rules for AI
DC_NO_TOWN_RATING = 0x40, // town rating does not disallow you from building
DC_FORCETEST = 0x80, // force test too.
CMD_ERROR = ((int32)0x80000000),
};
#define CMD_MSG(x) ((x)<<16)
enum {
CMD_AUTO = 0x200,
CMD_NO_WATER = 0x400,
CMD_NETWORK_COMMAND = 0x800, // execute the command without sending it on the network
CMD_NO_TEST_IF_IN_NETWORK = 0x1000, // When enabled, the command will bypass the no-DC_EXEC round if in network
CMD_SHOW_NO_ERROR = 0x2000,
};
//#define return_cmd_error(errcode) do { _error_message=(errcode); return CMD_ERROR; } while(0)
#define return_cmd_error(errcode) do { return CMD_ERROR | (errcode); } while (0)
/* command.c */
int32 DoCommand(int x, int y, uint32 p1, uint32 p2, uint32 flags, uint procc);
int32 DoCommandByTile(TileIndex tile, uint32 p1, uint32 p2, uint32 flags, uint procc);
bool IsValidCommand(uint cmd);
int32 GetAvailableMoneyForCommand(void);
#endif /* COMMAND_H */