C++ (Cpp) return_cmd_error示例

示例#1

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文件： water_cmd.cpp 项目： Voxar/OpenTTD

/** Build a piece of canal.
 * @param tile end tile of stretch-dragging
 * @param flags type of operation
 * @param p1 start tile of stretch-dragging
 * @param p2 specifies canal (0), water (1) or river (2); last two can only be built in scenario editor
 * @param text unused
 * @return the cost of this operation or an error
 */
CommandCost CmdBuildCanal(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	CommandCost cost(EXPENSES_CONSTRUCTION);

	if (p1 >= MapSize()) return CMD_ERROR;

	/* Outside of the editor you can only build canals, not oceans */
	if (p2 != 0 && _game_mode != GM_EDITOR) return CMD_ERROR;

	TileArea ta(tile, p1);

	/* Outside the editor you can only drag canals, and not areas */
	if (_game_mode != GM_EDITOR && ta.w != 1 && ta.h != 1) return CMD_ERROR;

	TILE_AREA_LOOP(tile, ta) {
		CommandCost ret;

		Slope slope = GetTileSlope(tile, NULL);
		if (slope != SLOPE_FLAT && (p2 != 2 || !IsInclinedSlope(slope))) {
			return_cmd_error(STR_ERROR_FLAT_LAND_REQUIRED);
		}

		/* can't make water of water! */
		if (IsTileType(tile, MP_WATER) && (!IsTileOwner(tile, OWNER_WATER) || p2 == 1)) continue;

		ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
		if (CmdFailed(ret)) return ret;
		cost.AddCost(ret);

		if (flags & DC_EXEC) {
			if (TileHeight(tile) == 0 && p2 == 1) {
				MakeSea(tile);
			} else if (p2 == 2) {
				MakeRiver(tile, Random());
			} else {
				MakeCanal(tile, _current_company, Random());
			}
			MarkTileDirtyByTile(tile);
			MarkCanalsAndRiversAroundDirty(tile);
		}

		cost.AddCost(_price[PR_CLEAR_WATER]);
	}

示例#2

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文件： company_cmd.cpp 项目： davidwlewis/openttd-cargodist

/**
 * Change the name of the company.
 * @param tile unused
 * @param flags operation to perform
 * @param p1 unused
 * @param p2 unused
 * @param text the new name or an empty string when resetting to the default
 * @return the cost of this operation or an error
 */
CommandCost CmdRenameCompany(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	bool reset = StrEmpty(text);

	if (!reset) {
		if (Utf8StringLength(text) >= MAX_LENGTH_COMPANY_NAME_CHARS) return CMD_ERROR;
		if (!IsUniqueCompanyName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
	}

	if (flags & DC_EXEC) {
		Company *c = Company::Get(_current_company);
		free(c->name);
		c->name = reset ? NULL : strdup(text);
		MarkWholeScreenDirty();
		CompanyAdminUpdate(c);
	}

	return CommandCost();
}

示例#3

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文件： depot_cmd.cpp 项目： ShaunOfTheLive/OpenCoasterTycoon

/**
 * Rename a depot.
 * @param tile unused
 * @param flags type of operation
 * @param p1 id of depot
 * @param p2 unused
 * @param text the new name or an empty string when resetting to the default
 * @return the cost of this operation or an error
 */
CommandCost CmdRenameDepot(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
	Depot *d = Depot::GetIfValid(p1);
	if (d == NULL) return CMD_ERROR;

	CommandCost ret = CheckTileOwnership(d->xy);
	if (ret.Failed()) return ret;

	bool reset = StrEmpty(text);

	if (!reset) {
		if (Utf8StringLength(text) >= MAX_LENGTH_DEPOT_NAME_CHARS) return CMD_ERROR;
		if (!IsUniqueDepotName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
	}

	if (flags & DC_EXEC) {
		free(d->name);

		if (reset) {
			d->name = NULL;
			MakeDefaultName(d);
		} else {
			d->name = strdup(text);
		}

		/* Update the orders and depot */
		SetWindowClassesDirty(WC_VEHICLE_ORDERS);
		SetWindowDirty(WC_VEHICLE_DEPOT, d->xy);

		/* Update the depot list */
		VehicleType vt;
		switch (GetTileType(d->xy)) {
			default: NOT_REACHED();
			case MP_RAILWAY: vt = VEH_TRAIN; break;
			case MP_ROAD:    vt = VEH_ROAD;  break;
			case MP_WATER:   vt = VEH_SHIP;  break;
		}
		SetWindowDirty(GetWindowClassForVehicleType(vt), VehicleListIdentifier(VL_DEPOT_LIST, vt, GetTileOwner(d->xy), d->index).Pack());
	}
	return CommandCost();
}

示例#4

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文件： vehicle_cmd.cpp 项目： Voxar/OpenTTD

/** Give a custom name to your vehicle
 * @param tile unused
 * @param flags type of operation
 * @param p1 vehicle ID to name
 * @param p2 unused
 * @param text the new name or an empty string when resetting to the default
 * @return the cost of this operation or an error
 */
CommandCost CmdRenameVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
{
    Vehicle *v = Vehicle::GetIfValid(p1);
    if (v == NULL || !CheckOwnership(v->owner)) return CMD_ERROR;

    bool reset = StrEmpty(text);

    if (!reset) {
        if (strlen(text) >= MAX_LENGTH_VEHICLE_NAME_BYTES) return CMD_ERROR;
        if (!(flags & DC_AUTOREPLACE) && !IsUniqueVehicleName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
    }

    if (flags & DC_EXEC) {
        free(v->name);
        v->name = reset ? NULL : strdup(text);
        InvalidateWindowClassesData(WC_TRAINS_LIST, 1);
        MarkWholeScreenDirty();
    }

    return CommandCost();
}

示例#5

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