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(svn r2217) - Fix: [ 1184201 ] AI orders its vehicles to a competitor's truck stop. Added a CmdFailed() check to all command returns of the AI instead of the simple == / != CMD_ERROR check. This should fix the problem.

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Darkvater
2005-04-20 22:30:40 +00:00
parent 1b312083fc
commit c8f07a2dd9
5 changed files with 150 additions and 158 deletions
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143
ai.c
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@@ -121,7 +121,7 @@ static int AiChooseTrainToBuild(byte railtype, int32 money, byte flag, TileIndex
{
int best_veh_index = -1;
byte best_veh_score = 0;
int32 r;
int32 ret;
int i;
for (i = 0; i < NUM_TRAIN_ENGINES; i++) {
@@ -132,10 +132,8 @@ static int AiChooseTrainToBuild(byte railtype, int32 money, byte flag, TileIndex
|| !HASBIT(e->player_avail, _current_player) || e->reliability < 0x8A3D)
continue;
r = DoCommandByTile(tile, i, 0, 0, CMD_BUILD_RAIL_VEHICLE);
if (r != CMD_ERROR &&
(!(_cmd_build_rail_veh_var1&1) || !(flag&1)) &&
r <= money &&
ret = DoCommandByTile(tile, i, 0, 0, CMD_BUILD_RAIL_VEHICLE);
if (!CmdFailed(ret) && (!(_cmd_build_rail_veh_var1&1) || !(flag&1)) && ret <= money &&
_cmd_build_rail_veh_score >= best_veh_score) {
best_veh_score = _cmd_build_rail_veh_score;
best_veh_index = i;
@@ -149,7 +147,7 @@ static int AiChooseRoadVehToBuild(byte cargo, int32 money, TileIndex tile)
{
int best_veh_index = -1;
int32 best_veh_cost = 0;
int32 r;
int32 ret;
int i = _cargoc.ai_roadveh_start[cargo];
int end = i + _cargoc.ai_roadveh_count[cargo];
@@ -158,9 +156,9 @@ static int AiChooseRoadVehToBuild(byte cargo, int32 money, TileIndex tile)
if (!HASBIT(e->player_avail, _current_player) || e->reliability < 0x8A3D)
continue;
r = DoCommandByTile(tile, i, 0, 0, CMD_BUILD_ROAD_VEH);
if (r != CMD_ERROR && r <= money && r >= best_veh_cost) {
best_veh_cost = r;
ret = DoCommandByTile(tile, i, 0, 0, CMD_BUILD_ROAD_VEH);
if (!CmdFailed(ret) && ret <= money && ret >= best_veh_cost) {
best_veh_cost = ret;
best_veh_index = i;
}
} while (++e, ++i != end);
@@ -172,7 +170,7 @@ static int AiChooseAircraftToBuild(int32 money, byte flag)
{
int best_veh_index = -1;
int32 best_veh_cost = 0;
int32 r;
int32 ret;
int i = AIRCRAFT_ENGINES_INDEX;
int end = i + NUM_AIRCRAFT_ENGINES;
@@ -187,9 +185,9 @@ static int AiChooseAircraftToBuild(int32 money, byte flag)
if (i>=253) continue;
}
r = DoCommandByTile(0, i, 0, 0, CMD_BUILD_AIRCRAFT);
if (r != CMD_ERROR && r <= money && r >= best_veh_cost) {
best_veh_cost = r;
ret = DoCommandByTile(0, i, 0, 0, CMD_BUILD_AIRCRAFT);
if (!CmdFailed(ret) && ret <= money && ret >= best_veh_cost) {
best_veh_cost = ret;
best_veh_index = i;
}
} while (++e, ++i != end);
@@ -272,7 +270,7 @@ static void AiRestoreVehicleOrders(Vehicle *v, BackuppedOrders *bak)
int i;
for (i = 0; bak->order[i].type != OT_NOTHING; i++)
if (!DoCommandP(0, v->index + (i << 16), PackOrder(&bak->order[i]), NULL, CMD_INSERT_ORDER | CMD_NO_TEST_IF_IN_NETWORK))
if (CmdFailed(DoCommandP(0, v->index + (i << 16), PackOrder(&bak->order[i]), NULL, CMD_INSERT_ORDER | CMD_NO_TEST_IF_IN_NETWORK)))
break;
}
@@ -294,8 +292,8 @@ static void AiHandleReplaceTrain(Player *p)
BackupVehicleOrders(v, orderbak);
tile = v->tile;
if (DoCommandByTile(0, v->index, 2, DC_EXEC, CMD_SELL_RAIL_WAGON) != CMD_ERROR &&
DoCommandByTile(tile, veh, 0, DC_EXEC, CMD_BUILD_RAIL_VEHICLE) != CMD_ERROR) {
if (!CmdFailed(DoCommandByTile(0, v->index, 2, DC_EXEC, CMD_SELL_RAIL_WAGON)) &&
!CmdFailed(DoCommandByTile(tile, veh, 0, DC_EXEC, CMD_BUILD_RAIL_VEHICLE)) ) {
veh = _new_train_id;
AiRestoreVehicleOrders(GetVehicle(veh), orderbak);
DoCommandByTile(0, veh, 0, DC_EXEC, CMD_START_STOP_TRAIN);
@@ -322,8 +320,8 @@ static void AiHandleReplaceRoadVeh(Player *p)
BackupVehicleOrders(v, orderbak);
tile = v->tile;
if (DoCommandByTile(0, v->index, 0, DC_EXEC, CMD_SELL_ROAD_VEH) != CMD_ERROR &&
DoCommandByTile(tile, veh, 0, DC_EXEC, CMD_BUILD_ROAD_VEH) != CMD_ERROR) {
if (!CmdFailed(DoCommandByTile(0, v->index, 0, DC_EXEC, CMD_SELL_ROAD_VEH)) &&
!CmdFailed(DoCommandByTile(tile, veh, 0, DC_EXEC, CMD_BUILD_ROAD_VEH)) ) {
veh = _new_roadveh_id;
AiRestoreVehicleOrders(GetVehicle(veh), orderbak);
DoCommandByTile(0, veh, 0, DC_EXEC, CMD_START_STOP_ROADVEH);
@@ -350,8 +348,8 @@ static void AiHandleReplaceAircraft(Player *p)
BackupVehicleOrders(v, orderbak);
tile = v->tile;
if (DoCommandByTile(0, v->index, 0, DC_EXEC, CMD_SELL_AIRCRAFT) != CMD_ERROR &&
DoCommandByTile(tile, veh, 0, DC_EXEC, CMD_BUILD_AIRCRAFT) != CMD_ERROR) {
if (!CmdFailed(DoCommandByTile(0, v->index, 0, DC_EXEC, CMD_SELL_AIRCRAFT)) &&
!CmdFailed(DoCommandByTile(tile, veh, 0, DC_EXEC, CMD_BUILD_AIRCRAFT)) ) {
veh = _new_aircraft_id;
AiRestoreVehicleOrders(GetVehicle(veh), orderbak);
DoCommandByTile(0, veh, 0, DC_EXEC, CMD_START_STOP_AIRCRAFT);
@@ -1567,7 +1565,7 @@ static bool AiCheckTrackResources(TileIndex tile, const AiDefaultBlockData *p, b
static int32 AiDoBuildDefaultRailTrack(TileIndex tile, const AiDefaultBlockData *p, byte flag)
{
int32 r;
int32 ret;
int32 total_cost = 0;
Town *t = NULL;
int rating = 0;
@@ -1582,14 +1580,14 @@ static int32 AiDoBuildDefaultRailTrack(TileIndex tile, const AiDefaultBlockData
if (p->mode < 2) {
if (p->mode == 0) {
// Depot
r = DoCommandByTile(c, _cur_ai_player->ai.railtype_to_use, p->attr, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_BUILD_TRAIN_DEPOT);
ret = DoCommandByTile(c, _cur_ai_player->ai.railtype_to_use, p->attr, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_BUILD_TRAIN_DEPOT);
} else {
// Station
r = DoCommandByTile(c, (p->attr&1) | (p->attr>>4)<<8 | (p->attr>>1&7)<<16, _cur_ai_player->ai.railtype_to_use, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_BUILD_RAILROAD_STATION);
ret = DoCommandByTile(c, (p->attr&1) | (p->attr>>4)<<8 | (p->attr>>1&7)<<16, _cur_ai_player->ai.railtype_to_use, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_BUILD_RAILROAD_STATION);
}
if (r == CMD_ERROR) return CMD_ERROR;
total_cost += r;
if (CmdFailed(ret)) return CMD_ERROR;
total_cost += ret;
clear_town_stuff:;
if (_cleared_town != NULL) {
@@ -1610,36 +1608,35 @@ clear_town_stuff:;
for(i=0; i!=6; i++,j>>=1) {
if (j&1) {
k = i;
r = DoCommandByTile(c, _cur_ai_player->ai.railtype_to_use, i, flag | DC_AUTO | DC_NO_WATER, CMD_BUILD_SINGLE_RAIL);
if (r == CMD_ERROR) return CMD_ERROR;
total_cost += r;
ret = DoCommandByTile(c, _cur_ai_player->ai.railtype_to_use, i, flag | DC_AUTO | DC_NO_WATER, CMD_BUILD_SINGLE_RAIL);
if (CmdFailed(ret)) return CMD_ERROR;
total_cost += ret;
}
}
/* signals too? */
if (j&3) {
// Can't build signals on a road.
if (IsTileType(c, MP_STREET))
return CMD_ERROR;
if (IsTileType(c, MP_STREET)) return CMD_ERROR;
if (flag & DC_EXEC) {
j = 4 - j;
do {
r = DoCommandByTile(c, k, 0, flag, CMD_BUILD_SIGNALS);
ret = DoCommandByTile(c, k, 0, flag, CMD_BUILD_SIGNALS);
} while (--j);
} else {
r = _price.build_signals;
ret = _price.build_signals;
}
if (r == CMD_ERROR) return CMD_ERROR;
total_cost += r;
if (CmdFailed(ret)) return CMD_ERROR;
total_cost += ret;
}
} else if (p->mode == 3) {
//Clear stuff and then build single rail.
if (GetTileSlope(c,NULL) != 0)
return CMD_ERROR;
r = DoCommandByTile(c, 0, 0, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_LANDSCAPE_CLEAR);
if (r == CMD_ERROR) return CMD_ERROR;
total_cost += r + _price.build_rail;
ret = DoCommandByTile(c, 0, 0, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_LANDSCAPE_CLEAR);
if (CmdFailed(ret)) return CMD_ERROR;
total_cost += ret + _price.build_rail;
if (flag & DC_EXEC) {
DoCommandByTile(c, _cur_ai_player->ai.railtype_to_use, p->attr&1, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_BUILD_SINGLE_RAIL);
@@ -1976,8 +1973,8 @@ static inline void AiCheckBuildRailBridgeHere(AiRailFinder *arf, TileIndex tile,
}
// Is building a (rail)bridge possible at this place (type doesn't matter)?
if (DoCommandByTile(tile_new, tile, 0 | arf->player->ai.railtype_to_use << 8,
DC_AUTO, CMD_BUILD_BRIDGE) == CMD_ERROR)
if (CmdFailed(DoCommandByTile(tile_new, tile, 0 | arf->player->ai.railtype_to_use << 8,
DC_AUTO, CMD_BUILD_BRIDGE)) )
return;
AiBuildRailRecursive(arf, tile_new, dir2);
@@ -1996,7 +1993,7 @@ static inline void AiCheckBuildRailTunnelHere(AiRailFinder *arf, TileIndex tile,
if (arf->ti.tileh == _dir_table_2[p[0]&3] && arf->ti.z!=0) {
int32 cost = DoCommandByTile(tile, arf->player->ai.railtype_to_use, 0, DC_AUTO, CMD_BUILD_TUNNEL);
if (cost != CMD_ERROR && cost <= (arf->player->player_money>>4)) {
if (!CmdFailed(cost) && cost <= (arf->player->player_money>>4)) {
AiBuildRailRecursive(arf, _build_tunnel_endtile, p[0]&3);
if (arf->depth == 1) {
AiCheckRailPathBetter(arf, p);
@@ -2054,7 +2051,7 @@ static void AiBuildRailRecursive(AiRailFinder *arf, TileIndex tile, int dir)
do {
// Make sure the tile is not in the list of banned tiles and that a rail can be built here.
if (!AiIsTileBanned(arf->player, tile, p[0]) &&
DoCommandByTile(tile, arf->player->ai.railtype_to_use, p[0], DC_AUTO | DC_NO_WATER | DC_NO_RAIL_OVERLAP, CMD_BUILD_SINGLE_RAIL) != CMD_ERROR) {
!CmdFailed(DoCommandByTile(tile, arf->player->ai.railtype_to_use, p[0], DC_AUTO | DC_NO_WATER | DC_NO_RAIL_OVERLAP, CMD_BUILD_SINGLE_RAIL))) {
AiBuildRailRecursive(arf, tile, p[1]);
}
@@ -2142,7 +2139,7 @@ static void AiBuildRailConstruct(Player *p)
for (i = MAX_BRIDGES - 1; i != 0; i--) {
if (CheckBridge_Stuff(i, bridge_len)) {
int32 cost = DoCommandByTile(arf.bridge_end_tile, p->ai.cur_tile_a, i | (p->ai.railtype_to_use << 8), DC_AUTO, CMD_BUILD_BRIDGE);
if (cost != CMD_ERROR && cost < (p->player_money >> 5))
if (!CmdFailed(cost) && cost < (p->player_money >> 5))
break;
}
}
@@ -2183,7 +2180,7 @@ static bool AiRemoveTileAndGoForward(Player *p)
if (IsTileType(tile, MP_TUNNELBRIDGE)) {
if (!(_map5[tile] & 0x80)) {
// Clear the tunnel and continue at the other side of it.
if (DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR) == CMD_ERROR)
if (CmdFailed(DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR)) )
return false;
p->ai.cur_tile_a = TILE_MASK(_build_tunnel_endtile - TileOffsByDir(p->ai.cur_dir_a));
return true;
@@ -2204,7 +2201,7 @@ static bool AiRemoveTileAndGoForward(Player *p)
tilenew = TILE_MASK(tile - offs);
// And clear the bridge.
if (DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR) == CMD_ERROR)
if (CmdFailed(DoCommandByTile(tile, 0, 0, DC_EXEC, CMD_LANDSCAPE_CLEAR)) )
return false;
p->ai.cur_tile_a = tilenew;
return true;
@@ -2226,7 +2223,7 @@ static bool AiRemoveTileAndGoForward(Player *p)
}
// And also remove the rail.
if (DoCommandByTile(tile, 0, bit, DC_EXEC, CMD_REMOVE_SINGLE_RAIL) == CMD_ERROR)
if (CmdFailed(DoCommandByTile(tile, 0, bit, DC_EXEC, CMD_REMOVE_SINGLE_RAIL)) )
return false;
// Find the direction at the other edge of the rail.
@@ -2382,7 +2379,7 @@ static void AiStateBuildRailVeh(Player *p)
if (p->ai.wagon_list[i] == INVALID_VEHICLE) {
veh = _cargoc.ai_railwagon[p->ai.railtype_to_use][cargo];
cost = DoCommandByTile(tile, veh, 0, DC_EXEC, CMD_BUILD_RAIL_VEHICLE);
if (cost == CMD_ERROR) goto handle_nocash;
if (CmdFailed(cost)) goto handle_nocash;
p->ai.wagon_list[i] = _new_wagon_id;
p->ai.wagon_list[i+1] = INVALID_VEHICLE;
return;
@@ -2401,7 +2398,7 @@ handle_nocash:
if (++p->ai.state_counter == 1000) {
for(i=0; p->ai.wagon_list[i] != INVALID_VEHICLE; i++) {
cost = DoCommandByTile(tile, p->ai.wagon_list[i], 0, DC_EXEC, CMD_SELL_RAIL_WAGON);
assert(cost != CMD_ERROR);
assert(!CmdFailed(cost));
}
p->ai.state = AIS_0;
}
@@ -2410,7 +2407,7 @@ handle_nocash:
// Try to build the locomotive
cost = DoCommandByTile(tile, veh, 0, DC_EXEC, CMD_BUILD_RAIL_VEHICLE);
assert(cost != CMD_ERROR);
assert(!CmdFailed(cost));
loco_id = _new_train_id;
// Sell a vehicle if the train is double headed.
@@ -2531,7 +2528,7 @@ static int AiFindBestDefaultRoadBlock(TileIndex tile, byte direction, byte cargo
static int32 AiDoBuildDefaultRoadBlock(TileIndex tile, const AiDefaultBlockData *p, byte flag)
{
int32 r;
int32 ret;
int32 total_cost = 0;
Town *t = NULL;
int rating = 0;
@@ -2553,30 +2550,29 @@ static int32 AiDoBuildDefaultRoadBlock(TileIndex tile, const AiDefaultBlockData
continue;
}
r = DoCommandByTile(c, p->attr, 0, flag | DC_AUTO | DC_NO_WATER, CMD_BUILD_ROAD);
if (r == CMD_ERROR)
return CMD_ERROR;
total_cost += r;
ret = DoCommandByTile(c, p->attr, 0, flag | DC_AUTO | DC_NO_WATER, CMD_BUILD_ROAD);
if (CmdFailed(ret)) return CMD_ERROR;
total_cost += ret;
continue;
}
if (p->mode == 0) {
// Depot
r = DoCommandByTile(c, p->attr, 0, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_BUILD_ROAD_DEPOT);
ret = DoCommandByTile(c, p->attr, 0, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_BUILD_ROAD_DEPOT);
goto clear_town_stuff;
} else if (p->mode == 1) {
if (_want_road_truck_station) {
// Truck station
r = DoCommandByTile(c, p->attr, RS_TRUCK, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_BUILD_ROAD_STOP);
ret = DoCommandByTile(c, p->attr, RS_TRUCK, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_BUILD_ROAD_STOP);
} else {
// Bus station
r = DoCommandByTile(c, p->attr, RS_BUS, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_BUILD_ROAD_STOP);
ret = DoCommandByTile(c, p->attr, RS_BUS, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_BUILD_ROAD_STOP);
}
clear_town_stuff:;
if (r == CMD_ERROR) return CMD_ERROR;
total_cost += r;
if (CmdFailed(ret)) return CMD_ERROR;
total_cost += ret;
if (_cleared_town != NULL) {
if (t != NULL && t != _cleared_town)
@@ -2592,8 +2588,8 @@ clear_town_stuff:;
return CMD_ERROR;
if (!(IsTileType(c, MP_STREET) && (_map5[c] & 0xF0) == 0)) {
r = DoCommandByTile(c, 0, 0, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_LANDSCAPE_CLEAR);
if (r == CMD_ERROR) return CMD_ERROR;
ret = DoCommandByTile(c, 0, 0, flag | DC_AUTO | DC_NO_WATER | DC_AI_BUILDING, CMD_LANDSCAPE_CLEAR);
if (CmdFailed(ret)) return CMD_ERROR;
}
}
@@ -2836,7 +2832,7 @@ static bool AiBuildRoadHelper(uint tile, int flags, int type)
1+2,
8+4,
};
return DoCommandByTile(tile, _road_bits[type], 0, flags, CMD_BUILD_ROAD) != CMD_ERROR;
return !CmdFailed(DoCommandByTile(tile, _road_bits[type], 0, flags, CMD_BUILD_ROAD));
}
static inline void AiCheckBuildRoadBridgeHere(AiRoadFinder *arf, TileIndex tile, const byte *p)
@@ -2867,7 +2863,7 @@ static inline void AiCheckBuildRoadBridgeHere(AiRoadFinder *arf, TileIndex tile,
}
// Is building a (rail)bridge possible at this place (type doesn't matter)?
if (DoCommandByTile(tile_new, tile, 0x8000, DC_AUTO, CMD_BUILD_BRIDGE) == CMD_ERROR)
if (CmdFailed(DoCommandByTile(tile_new, tile, 0x8000, DC_AUTO, CMD_BUILD_BRIDGE)))
return;
AiBuildRoadRecursive(arf, tile_new, dir2);
@@ -2886,7 +2882,7 @@ static inline void AiCheckBuildRoadTunnelHere(AiRoadFinder *arf, TileIndex tile,
if (arf->ti.tileh == _dir_table_2[p[0]&3] && arf->ti.z!=0) {
int32 cost = DoCommandByTile(tile, 0x200, 0, DC_AUTO, CMD_BUILD_TUNNEL);
if (cost != CMD_ERROR && cost <= (arf->player->player_money>>4)) {
if (!CmdFailed(cost) && cost <= (arf->player->player_money>>4)) {
AiBuildRoadRecursive(arf, _build_tunnel_endtile, p[0]&3);
if (arf->depth == 1) {
AiCheckRoadPathBetter(arf, p);
@@ -3026,7 +3022,7 @@ do_some_terraform:
for(i = 10; i != 0; i--) {
if (CheckBridge_Stuff(i, bridge_len)) {
int32 cost = DoCommandByTile(tile, p->ai.cur_tile_a, i + (0x80 << 8), DC_AUTO, CMD_BUILD_BRIDGE);
if (cost != CMD_ERROR && cost < (p->player_money >> 5))
if (!CmdFailed(cost) && cost < (p->player_money >> 5))
break;
}
}
@@ -3168,7 +3164,6 @@ static void AiStateBuildRoadVehicles(Player *p)
const AiDefaultBlockData *ptr;
uint tile,loco_id;
int veh, i;
int32 cost;
ptr = _road_default_block_data[p->ai.src.cur_building_rule]->data;
for(;ptr->mode != 0;ptr++) {}
@@ -3180,9 +3175,7 @@ static void AiStateBuildRoadVehicles(Player *p)
return;
}
cost = DoCommandByTile(tile, veh, 0, DC_EXEC, CMD_BUILD_ROAD_VEH);
if (cost == CMD_ERROR)
return;
if (CmdFailed(DoCommandByTile(tile, veh, 0, DC_EXEC, CMD_BUILD_ROAD_VEH))) return;
loco_id = _new_roadveh_id;
@@ -3336,15 +3329,14 @@ static void AiStateAirportStuff(Player *p)
static int32 AiDoBuildDefaultAirportBlock(TileIndex tile, const AiDefaultBlockData *p, byte flag)
{
int32 total_cost = 0, r;
int32 total_cost = 0, ret;
for(;p->mode == 0;p++) {
if (!HASBIT(_avail_aircraft, p->attr))
return CMD_ERROR;
r = DoCommandByTile(TILE_MASK(tile + ToTileIndexDiff(p->tileoffs)), p->attr,0,flag | DC_AUTO | DC_NO_WATER,CMD_BUILD_AIRPORT);
if (r == CMD_ERROR)
return CMD_ERROR;
total_cost += r;
ret = DoCommandByTile(TILE_MASK(tile + ToTileIndexDiff(p->tileoffs)), p->attr,0,flag | DC_AUTO | DC_NO_WATER,CMD_BUILD_AIRPORT);
if (CmdFailed(ret)) return CMD_ERROR;
total_cost += ret;
}
return total_cost;
@@ -3489,7 +3481,6 @@ static void AiStateBuildAircraftVehicles(Player *p)
const AiDefaultBlockData *ptr;
uint tile;
int veh;
int32 cost;
int i;
uint loco_id;
@@ -3503,9 +3494,7 @@ static void AiStateBuildAircraftVehicles(Player *p)
return;
}
cost = DoCommandByTile(tile, veh, 0, DC_EXEC, CMD_BUILD_AIRCRAFT);
if (cost == CMD_ERROR)
return;
if (CmdFailed(DoCommandByTile(tile, veh, 0, DC_EXEC, CMD_BUILD_AIRCRAFT))) return;
loco_id = _new_aircraft_id;
for(i=0; p->ai.order_list_blocks[i] != 0xFF; i++) {