static const Depot *FindClosestShipDepot(const Vehicle *v, uint max_distance)
{
/* Find the closest depot */
const Depot *depot;
const Depot *best_depot = NULL;
/* If we don't have a maximum distance, i.e. distance = 0,
* we want to find any depot so the best distance of no
* depot must be more than any correct distance. On the
* other hand if we have set a maximum distance, any depot
* further away than max_distance can safely be ignored. */
uint best_dist = max_distance == 0 ? UINT_MAX : max_distance + 1;
FOR_ALL_DEPOTS(depot) {
TileIndex tile = depot->xy;
if (IsShipDepotTile(tile) && IsTileOwner(tile, v->owner)) {
uint dist = DistanceManhattan(tile, v->tile);
if (dist < best_dist) {
best_dist = dist;
best_depot = depot;
}
}
}
return best_depot;
}
static bool CheckShipLeaveDepot(Ship *v)
{
if (!v->IsChainInDepot()) return false;
/* We are leaving a depot, but have to go to the exact same one; re-enter */
if (v->current_order.IsType(OT_GOTO_DEPOT) &&
IsShipDepotTile(v->tile) && GetDepotIndex(v->tile) == v->current_order.GetDestination()) {
VehicleEnterDepot(v);
return true;
}
TileIndex tile = v->tile;
Axis axis = GetShipDepotAxis(tile);
DiagDirection north_dir = ReverseDiagDir(AxisToDiagDir(axis));
TileIndex north_neighbour = TILE_ADD(tile, TileOffsByDiagDir(north_dir));
DiagDirection south_dir = AxisToDiagDir(axis);
TileIndex south_neighbour = TILE_ADD(tile, 2 * TileOffsByDiagDir(south_dir));
TrackBits north_tracks = DiagdirReachesTracks(north_dir) & GetTileShipTrackStatus(north_neighbour);
TrackBits south_tracks = DiagdirReachesTracks(south_dir) & GetTileShipTrackStatus(south_neighbour);
if (north_tracks && south_tracks) {
/* Ask pathfinder for best direction */
bool reverse = false;
bool path_found;
switch (_settings_game.pf.pathfinder_for_ships) {
case VPF_OPF: reverse = OPFShipChooseTrack(v, north_neighbour, north_dir, north_tracks, path_found) == INVALID_TRACK; break; // OPF always allows reversing
case VPF_NPF: reverse = NPFShipCheckReverse(v); break;
case VPF_YAPF: reverse = YapfShipCheckReverse(v); break;
default: NOT_REACHED();
}
if (reverse) north_tracks = TRACK_BIT_NONE;
}
if (north_tracks) {
/* Leave towards north */
v->direction = DiagDirToDir(north_dir);
} else if (south_tracks) {
/* Leave towards south */
v->direction = DiagDirToDir(south_dir);
} else {
/* Both ways blocked */
return false;
}
v->state = AxisToTrackBits(axis);
v->vehstatus &= ~VS_HIDDEN;
v->cur_speed = 0;
v->UpdateViewport(true, true);
SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
PlayShipSound(v);
VehicleServiceInDepot(v);
InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
SetWindowClassesDirty(WC_SHIPS_LIST);
return false;
}
static bool CheckShipLeaveDepot(Ship *v)
{
if (!v->IsInDepot()) return false;
/* We are leaving a depot, but have to go to the exact same one; re-enter */
if (v->current_order.IsType(OT_GOTO_DEPOT) &&
IsShipDepotTile(v->tile) && GetDepotIndex(v->tile) == v->current_order.GetDestination()) {
VehicleEnterDepot(v);
return true;
}
TileIndex tile = v->tile;
Axis axis = GetShipDepotAxis(tile);
/* Check first (north) side */
if (DiagdirReachesTracks((DiagDirection)axis) & GetTileShipTrackStatus(TILE_ADD(tile, ToTileIndexDiff(_ship_leave_depot_offs[axis])))) {
v->direction = ReverseDir(AxisToDirection(axis));
/* Check second (south) side */
} else if (DiagdirReachesTracks((DiagDirection)(axis + 2)) & GetTileShipTrackStatus(TILE_ADD(tile, -2 * ToTileIndexDiff(_ship_leave_depot_offs[axis])))) {
v->direction = AxisToDirection(axis);
} else {
return false;
}
v->state = AxisToTrackBits(axis);
v->vehstatus &= ~VS_HIDDEN;
v->cur_speed = 0;
v->UpdateViewport(false, true);
SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
PlayShipSound(v);
VehicleServiceInDepot(v);
InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
SetWindowClassesDirty(WC_SHIPS_LIST);
return false;
}
/** Build a ship.
* @param tile tile of depot where ship is built
* @param flags type of operation
* @param p1 ship type being built (engine)
* @param p2 unused
* @param text unused
* @return the cost of this operation or an error
*/
CommandCost CmdBuildShip(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
UnitID unit_num;
if (!IsEngineBuildable(p1, VEH_SHIP, _current_company)) return_cmd_error(STR_ERROR_SHIP_NOT_AVAILABLE);
const Engine *e = Engine::Get(p1);
CommandCost value(EXPENSES_NEW_VEHICLES, e->GetCost());
/* Engines without valid cargo should not be available */
if (e->GetDefaultCargoType() == CT_INVALID) return CMD_ERROR;
if (flags & DC_QUERY_COST) return value;
/* The ai_new queries the vehicle cost before building the route,
* so we must check against cheaters no sooner than now. --pasky */
if (!IsShipDepotTile(tile)) return CMD_ERROR;
if (!IsTileOwner(tile, _current_company)) return CMD_ERROR;
unit_num = (flags & DC_AUTOREPLACE) ? 0 : GetFreeUnitNumber(VEH_SHIP);
if (!Vehicle::CanAllocateItem() || unit_num > _settings_game.vehicle.max_ships)
return_cmd_error(STR_ERROR_TOO_MANY_VEHICLES_IN_GAME);
if (flags & DC_EXEC) {
int x;
int y;
const ShipVehicleInfo *svi = &e->u.ship;
Ship *v = new Ship();
v->unitnumber = unit_num;
v->owner = _current_company;
v->tile = tile;
x = TileX(tile) * TILE_SIZE + TILE_SIZE / 2;
y = TileY(tile) * TILE_SIZE + TILE_SIZE / 2;
v->x_pos = x;
v->y_pos = y;
v->z_pos = GetSlopeZ(x, y);
v->UpdateDeltaXY(v->direction);
v->vehstatus = VS_HIDDEN | VS_STOPPED | VS_DEFPAL;
v->spritenum = svi->image_index;
v->cargo_type = e->GetDefaultCargoType();
v->cargo_cap = svi->capacity;
v->value = value.GetCost();
v->last_station_visited = INVALID_STATION;
v->max_speed = svi->max_speed;
v->engine_type = p1;
v->reliability = e->reliability;
v->reliability_spd_dec = e->reliability_spd_dec;
v->max_age = e->GetLifeLengthInDays();
_new_vehicle_id = v->index;
v->state = TRACK_BIT_DEPOT;
v->service_interval = Company::Get(_current_company)->settings.vehicle.servint_ships;
v->date_of_last_service = _date;
v->build_year = _cur_year;
v->cur_image = SPR_IMG_QUERY;
v->random_bits = VehicleRandomBits();
if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
v->InvalidateNewGRFCacheOfChain();
v->cargo_cap = GetVehicleCapacity(v);
v->InvalidateNewGRFCacheOfChain();
VehicleMove(v, false);
InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
InvalidateWindowClassesData(WC_SHIPS_LIST, 0);
SetWindowDirty(WC_COMPANY, v->owner);
if (IsLocalCompany()) {
InvalidateAutoreplaceWindow(v->engine_type, v->group_id); // updates the replace Ship window
}
Company::Get(_current_company)->num_engines[p1]++;
}
return value;
}
