sprite.setAngle

sprite.setAngle sets Angle on a sprite object. It takes id and deg.

sprite.setAngle(id, deg)

function start() {  const id = sprite.create('/sprites/hero.png', 100, 120);  sprite.setAngle(id, 45);}

sprite.create is there to give the call something to act on; sprite.setAngle is the line that matters. The code sits in start(), which the engine calls once, when the entity spawns.