Wave

///@description Wave(from, to, duration, offset);
/// @function Wave
/// @param from
/// @param to
/// @param duration
/// @param offset

// Returns a value that will wave back and forth between [from ~ to] over [duration] seconds
// Examples:
//image_angle = Wave(-45, 0, 1, 0) -> rock back and forth 90 degrees in a second
// x = Wave(-10, 10, 0.25, 0)       -> move left and right quickly

var a4 = (argument1 - argument0) * 0.5;
return argument0 + a4 + sin((((current_time * 0.001) + argument2 * argument3) / argument2) * (pi * 2)) * a4;