I'm not sure if I chose the right category for this :)
Anyways, I made a simple yet useful pingpong-value function. It's useful for animating sprites back and forth in a loop. I decided to share it with you - feel free to use and modify it for any of your needs!
//PingPong value //----------------------------- //Loops x from a to b and //then from b to a (inclusive) function pingpong(x,a,b) local d=b-a local p=x%(d*2) if p>d then p=2*d-p end return p+a end //example usage //----------------------------- frame = 0 function _update() frame+=1 end //constantly animates sprite from //16 to 24 and back from 24 to 16 function _draw() spr(pingpong(frame,16,24),58,58) end |
P#28304 2016-09-11 08:17 ( Edited 2016-09-11 12:17)
[Please log in to post a comment]