1 /** @file ai_tunnel.cpp handles the query-related of the AITunnel class and can construct tunnels **/

     2 

     3 #include "ai_tunnel.hpp"

     4 #include "../../landscape.h"

     5 #include "../../tunnel_map.h"

     6 #include "../../road_type.h"

     7 

     8 /* static */ bool AITunnel::IsTunnelTile(TileIndex tile)

     9 {

    10 	return ::IsTunnelTile(tile);

    11 }

    12 

    13 /* static */ TileIndex AITunnel::GetOtherTunnelEnd(TileIndex tile)

    14 {

    15 	if (!IsTunnelTile(tile)) return INVALID_TILE;

    16 

    17 	return ::GetOtherTunnelEnd(tile);

    18 }

    19 

    20 /* static */ bool AITunnel::BuildTunnel(AIVehicle::VehicleType vehicle_type, TileIndex start)

    21 {

    22 	if (!::IsValidTile(start)) return false;

    23 	if (vehicle_type != AIVehicle::VEHICLE_RAIL && vehicle_type != AIVehicle::VEHICLE_ROAD) return false;

    24 

    25 	uint type = 0;

    26 	if (vehicle_type == AIVehicle::VEHICLE_ROAD) {

    27 		type |= (TRANSPORT_ROAD << 9);

    28 		type |= ROADTYPES_ROAD;

    29 	} else {

    30 		type |= (TRANSPORT_RAIL << 9);

    31 		type |= RAILTYPES_RAIL;

    32 	}

    33 

    34 	return AIObject::DoCommand(start, type, 0, CMD_BUILD_TUNNEL);

    35 }

    36 

    37 /* static */ bool AITunnel::RemoveTunnel(TileIndex tile)

    38 {

    39 	if (!IsTunnelTile(tile)) return false;

    40 

    41 	return AIObject::DoCommand(tile, 0, 0, CMD_LANDSCAPE_CLEAR);

    42 }