Write in a file

[Elca]

Hi all,

I have a problem to write in a file with the File class.

This is my code:

Code:

String path = "C:/Users/Elca/Documents/Games/test.txt";
FileInfo info;
print(GetFileInfo(path,info));
print(info.IsWritable());
File f( path, "Open");
f.WriteLine("Hello");

When I start the game with the editor, the 2 print function return True and the WriteLine return this error:

File::Write - Write operation not permitted on this file handle

An idea ?


And how to create a file ? I don't found any function to do that.

[Elca]

Anyone have a sample code to write in a file which I can compare?

[LutinMalefique]

hi,
i haven't use this function since your post, and i haven't succeed yet. I will take a closer look this week-end.
Maybe it's something with the "open" function when you handle to a file, but "write" doesn't work

[LutinMalefique]

hi Elca,

i hope you've succeed or find another solution because in my side i haven't succeed in using that fonction.

[LutinMalefique]

hi,
I do not know if your problem is still relevant but, recently, i've worked on file's writing. OptionsFile is the only function with which I managed to write something on a file, here's an example:

Code:

         OptionsFile testRecord("test");
        //
String testFile = "test.txt";
testRecord.New (testFile);
        //
testRecord.SetVariable("something", yourVariable);
//
testRecord.Save();

[gekido]

File management in gamecore is basically a wrapper for the basic C-style functions:

http://www.exforsys.com/tutorials/c-language/file-management-in-c.html

You can open files in one of 3 modes - as described in the above tutorial:

The second statement also specifies the purpose of opening the file. The mode does this job.

R open the file for read only.
W open the file for writing only.
A open the file for appending data to it.

In GameCore terms, these 3 properties are defined as:

Open
Create
Append

So in your script sample, you weren't able to write to the file essentially because you were opening them in 'read only' mode.

http://gamecore3d.com/docs/scripting-reference/classes/File

I just updated the documentation to hopefully clarify this information as well for future users.

[LutinMalefique]

Thank you for the clarification Gekido, but i have a problem with the creation of File.

Code:

String path = "C:/benchSponza.txt";
File CreateBench( path, "Create");

The "code creation" is done in a custom script (outside any scope, like global variables) - my Sponza controller for Day/Night, postFx activation...- and it works well when game is tested in editor. But not with an exported game, an error message say

archive C:/benchSponza.txt is not opened for writing for file C:/benchSponza.txt.

I've try to put code creation in the menu script, and my "sponza controller" open that file to append new data, no success.

Anyone have clues to create a file with export game 

[davidochoa]

You may need to use the DocumentsPath alias:

Code:

String path = "[documents]\\benchSponza.txt";

Inside the editor the file is created in the project root folder, for exported games it's in the folder defined in DocumentsPath.

[LutinMalefique]

ok thank you it works. The file is created in the MyGames folder.

[gekido]

That's a Window's security issue - in a typical 'user' account, applications can only write into a limited subset of folders by default within the user's home folder

Any data / files that you need / want to write from your game after export, you need to use one of the available 'aliases' that gamecore provides for you.

http://gamecore3d.com/docs/user-guide/scripting/introduction/aliases