Sprite behaviour

class PlayerBehavior extends Sup.Behavior {
  speed = 0.1;
  jumpSpeed = 0.25;
  direction = 1;

  update() {
    // Use ArcadePhysics2D plugin to check collision
    Sup.ArcadePhysics2D.collides( this.actor.arcadeBody2D, Sup.ArcadePhysics2D.getAllBodies() );

    var animationName = "Idle";
    var animationLooping = true;
    var falling = true;

    var velocity = this.actor.arcadeBody2D.getVelocity();

    // Movement
    if ( Sup.Input.isKeyDown( "LEFT" ) ) {
      velocity.x = -this.speed;
      animationName = "Run";
      this.direction = -1;
    }
    else if ( Sup.Input.isKeyDown( "RIGHT" ) ) {
      velocity.x = this.speed;
      animationName = "Run";
      this.direction = 1;
    }
    else {
      velocity.x = 0;
    }

    // Jump
    if ( Sup.Input.isKeyDown("UP") && this.actor.arcadeBody2D.getTouches().bottom ) {
      velocity.y = this.jumpSpeed;
    }

    // Shoot
    else if ( Sup.Input.isKeyDown("SPACE") && this.actor.spriteRenderer.getAnimation() !== "Shoot" ) {
      animationName = "Shoot";
      animationLooping = false;

      var bulletActor = Sup.appendScene( Sup.get( "Bullet/Prefab", Sup.Scene) )[0];  // Append the scene to create the bullet
      bulletActor.getBehavior( BulletBehavior ).direction = this.direction;          // Create the behavior to make it move
      bulletActor.setPosition( this.actor.getPosition() );                           // Adjust its position into the player
      bulletActor.move( new Sup.Math.Vector3( 0, -0.4, 0 ) );

      new Sup.Audio.SoundInstance( Sup.get( "Bullet/Sound", Sup.Sound )).play();
    }

    // Update scale and velocity
    this.actor.setLocalScale( new Sup.Math.Vector3(this.direction, 1, 1 ) );
    this.actor.arcadeBody2D.setVelocity( velocity );

    // Apply animation - Make sure the "Shoot" animation is entirely played before switching to another one
    if ( this.actor.spriteRenderer.getAnimation() !== "Shoot" || ! this.actor.spriteRenderer.isAnimationPlaying() ) {
      this.actor.spriteRenderer.setAnimation( animationName, animationLooping );
    }

    // Respawn
    if ( this.actor.getPosition().y < -5 ) { Sup.loadScene( Sup.get( "Scene", Sup.Scene ) ); }
  }
}
Sup.registerBehavior( PlayerBehavior );