Simple HTML5 test of wave function (after Shawn Spalding)
Following this video of 5 simple but useful scripts: https://www.youtube.com/watch?v=2FroAhEsuE8
(Note expressed in <GMS2.3 formatting but easily updated if necessary.)
//Wave(from, to, duration, offset)
// Returns a value that will wave back and forth between [from-to] over [duration] seconds
// Examples
// image_angle = Wave(-45,45,1,0) -> rock back and forth 90 degrees in a second
// x = Wave(-10,10,0.25,0) -> move left and right quickly
// Or here is a fun one! Make an object be all squishy!! ^u^
// image_xscale = Wave(0.5, 2.0, 1.0, 0.0)
// image_yscale = Wave(2.0, 0.5, 1.0, 0.0)
a4 = (argument1 - argument0) * 0.5;
return argument0 + a4 + sin((((current_time * 0.001) + argument2 * argument3) / argument2) * (pi*2)) * a4;