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  Finding a frame index's X and Y positions  (Read 1466 times)
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Offline Xardov

Senior Newbie





« Posted 2012-04-05 16:48:53 »

Hi, i'm trying to create an animation system, and so far i've devised a method in which it will take in a specified array of frames to play, and play those frames.  However, my problem is, how can I tell the X and Y positions of a frame given the frame index?  I need those in order to display the frame at those coordinates.  Here is a diagram of what the animation looks like, the frame index is at the top left of each box in the "spritesheet".  
Offline theagentd

« JGO Bitwise Duke »


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« Reply #1 - Posted 2012-04-05 18:12:07 »

You forgot the diagram?

You can find the frame positions by doing some simple math, but you need to know how many frames you have per column.

Top left corner x = (index % columns) * frameWidth;
Top left corner y = (index / columns) * frameHeight;

Myomyomyo.
Offline Xardov

Senior Newbie





« Reply #2 - Posted 2012-04-05 23:34:04 »

haha, my bad.  thanks!
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