sprite rotation in allegro

[thedumbmutt]

Can someone try using rotate_sprite() in a .c file and then a .cpp file and see if they are having the same problem I am, It doesnt work for me if its saved as .cpp but does as .c. At least I think thats the problem, weird as hell!

[Leeman_s]

whats the prototype look like for the function?

[Vorok]

According to the manual at allegro.cc (http://www.allegro.cc/manual/view_function.php?_id=1308&request=1042500525&), the rotate_sprite function is as follows:

void rotate_sprite(BITMAP *bmp, BITMAP *sprite, int x, int y, fixed angle);

What exactly is the problem you're having with it? Is the compiler giving you an error message?

One thing you might try is to write a quick piece of independant code that does nothing but display a rotated bitmap on the screen. That way you can see if the problem is in your implimentation of the function, or in something else in your program.

[TechWins]

Typically when you use rotate_sprite() in a game you want your variables to be floats to get precies accuracy so here is what you would want to do...



float x, y, angle

rotate_sprite(buffer, sprite, int(x), int(y), ftofix(angle) );



I'm not exactly sure why a .c or a .cpp would cause a problem with it; if you have any problems you can either pm or continue to post here.

[thedumbmutt]

Im such an idiot!!! I forgot to convert to fix data type, sorry for such a pointles question.