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Dark GDK / Problem with text

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dede
19
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Joined: 17th Feb 2005
Location: France
Posted: 21st Jul 2005 07:33
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I think there is a very simple answer at my question but I can't find a solution on my own so...
I want to print a variable float on the screen and I tooke the code to show the FPS but it dosen't print the right values of my variable.



Thanks for your futur help
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kamelito
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Joined: 25th Dec 2004
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Posted: 21st Jul 2005 08:16
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Hi,

You can do it that way

float pi = 3.14; //float to be displayed
char sz[3]; //array to store the converted float (should be equal to your float
sprintf(sz, "%G", pi); //do the conversion
dbText (0, 400, sz); // print it to the screen.

You could probably do it also using dbStr() but its more a basic stuff than C/C++.

sprintf() needs stdio (so #include <stdio.h> is required!

I hope this help
Regards
Kamelito

/kml
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dede
19
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Posted: 21st Jul 2005 08:47
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I haven't include stdio but complex and apparently it's the same.
But i've found my error :

I've use printf like that : sprintf
Quote: "( czVariable , "Var %d" , fltVariable);"


But I sould use printf like that
Quote: "sprintf ( czVariable , "%G" , fltVariable);"


Now, I can see the values of my variables thanks!!
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matt rochon
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Joined: 15th Mar 2003
Location: Canada
Posted: 21st Jul 2005 13:27
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kamelito:
you need to allocate enough space for all of the characters + 1

Quote: "
float pi = 3.14; //float to be displayed
char sz[3]; //array to store the converted float (should be equal to your float
sprintf(sz, "%G", pi); //do the conversion
dbText (0, 400, sz); // print it to the screen.
"


this would cause an access violation because "3.14" is 4 characters plus the null terminator. you would need to make sz an array of 5 characters

they beat it into our heads in school
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kamelito
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Posted: 21st Jul 2005 21:18
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You're right.

I put 4 in the first place but change it at the last second as I didn't have an error while compiling it that way. I though that sz[3] was 0 to 3, but its 0 to 2.

Good catch

/kml
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dede
19
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Joined: 17th Feb 2005
Location: France
Posted: 16th Aug 2005 19:06
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I can now print all th e variables what I want, but I got another problem :
In my 3D game my variables print fine, but if I want to print some changing variables in a menu (for example), the value of the variables will be print over the old value, so it's unreadable.
Can you understand my problem?
If you can, do you have a solution?
Thank you
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OSX Using Happy Dude
21
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Location: At home
Posted: 16th Aug 2005 19:43
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dbSetTextOpaque

Come to the third DarkBasic Pro Sci Fi Con - Be there and be square
Blog:http://spaces.msn.com/members/BouncyBrick/
Web Site:http://www.nicholaskingsley.co.uk
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dede
19
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Posted: 16th Aug 2005 20:38
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Euh it works, but now the background of the text is... opaque!
So if I want to print my variable over a bitmap or in my game, it's a problem...

You don't have another solution?

And I don't understand why changing variables print fine in my game but not fine whith a bitmap in background?
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OSX Using Happy Dude
21
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Posted: 16th Aug 2005 23:16
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Its because of graphic rendering orders...

Come to the third DarkBasic Pro Sci Fi Con - Be there and be square
Blog:http://spaces.msn.com/members/BouncyBrick/
Web Site:http://www.nicholaskingsley.co.uk
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dede
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Posted: 16th Aug 2005 23:42
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OK, so if I want to create a chat, I have to make it in 3D in order to haven't opacity behind the text?
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IanM
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Location: In my moon base
Posted: 17th Aug 2005 15:05
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No. The screen content is totally under your control.



If you draw over your bitmap, it is *your* responsibility to undo what you have done for the next frame. The above code is one of many ways to do this.

*** Coming soon - Network Plug-in - Check my site for info ***
For free Plug-ins and source code http://www.matrix1.demon.co.uk
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dede
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Posted: 18th Aug 2005 04:03
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Thank you IanM!!

I didn't "dbSetCurrentBitmap" command.
I've tried to texture a plain with my image and to position the plain as it was load with "dbLoadBitmap". The result was not so bad, but your solution is much better.
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