Method InternalExecuteProcessResult

src/command.cpp:342–393

* Process the result of a command test run and execution run. * @param cmd Command that was executed. * @param cmd_flags Command flags. * @param res_test Command result of test run. * @param tes_exec Command result of real run. * @param extra_cash Additional cash required for successful command execution. * @param tile Tile of command execution. * @param[in,out] cur_company Backup of curren

 * @return Final command result.
 */
CommandCost CommandHelperBase::InternalExecuteProcessResult(Commands cmd, CommandFlags cmd_flags, [[maybe_unused]] const CommandCost &res_test, const CommandCost &res_exec, Money extra_cash, TileIndex tile, Backup<CompanyID> &cur_company)
{
	BasePersistentStorageArray::SwitchMode(PSM_LEAVE_COMMAND);

	if (cmd == CMD_COMPANY_CTRL) {
		cur_company.Trash();
		/* We are a new company                  -> Switch to new local company.
		 * We were closed down                   -> Switch to spectator
		 * Some other company opened/closed down -> The outside function will switch back */
		_current_company = _local_company;
	} else {
		/* Make sure nothing bad happened, like changing the current company. */
		assert(cmd_flags.Any({CommandFlag::Spectator, CommandFlag::Server}) ? _current_company == COMPANY_SPECTATOR : cur_company.Verify());
		cur_company.Restore();
	}

	/* If the test and execution can differ we have to check the
	 * return of the command. Otherwise we can check whether the
	 * test and execution have yielded the same result,
	 * i.e. cost and error state are the same. */
	bool test_and_exec_can_differ = cmd_flags.Test(CommandFlag::NoTest);
	if (!test_and_exec_can_differ) {
		assert(res_test.GetCost() == res_exec.GetCost() && res_test.Failed() == res_exec.Failed()); // sanity check
	} else if (res_exec.Failed()) {
		return res_exec;
	}

	/* If we're needing more money and we haven't done
	 * anything yet, ask for the money! */
	if (extra_cash != 0 && res_exec.GetCost() == 0) {
		/* It could happen we removed rail, thus gained money, and deleted something else.
		 * So make sure the signal buffer is empty even in this case */
		UpdateSignalsInBuffer();
		return CommandCostWithParam(STR_ERROR_NOT_ENOUGH_CASH_REQUIRES_CURRENCY, extra_cash);
	}

	/* update last build coordinate of company. */
	if (tile != 0) {
		Company *c = Company::GetIfValid(_current_company);
		if (c != nullptr) c->last_build_coordinate = tile;
	}

	SubtractMoneyFromCompany(res_exec);

	/* Record if there was a command issues during pause; ignore pause/other setting related changes. */
	if (_pause_mode.Any() && _command_proc_table[cmd].type != CommandType::ServerSetting) _pause_mode.Set(PauseMode::CommandDuringPause);

	/* update signals if needed */
	UpdateSignalsInBuffer();

	return res_exec;
}


/**