stage {
    scene Space("gallery:Scifi/Space")
    let gameOn = 0;

    when stage.signalReceived("gameStart") {
        gameOn = true;
    }

    actor Star {
        costume Idle("gallery:Galaxy/Star Idle")

        when stage.started {
            this.hide();
            this.size = 40;
            this.setPosition(-350, Math.randomBetween(-180, 180));
            stage.broadcast("gameStart");
        }

        when stage.signalReceived("gameStart") {
            this.wait(0.5);
            while(gameOn) {
                if(gameOn){
                    stage.createClone(this);
                    this.wait(0.5);
                }
            }
        }



        when cloned {
            this.y = Math.randomBetween(-180, 180);
            this.show();
            while(this.x <= 635) {
                this.x += 3;
                this.wait(0.02);
                if(this.touching(Spaceship)) {
                    gameOn = false;
                    Spaceship.hide();
                    stage.broadcast("gameOver");
                }
            }
            this.deleteClone();
        }

        when stage.signalReceived("gameOver") {
            this.deleteClone();
        }

    }

    actor Spaceship {
        costume Fly("gallery:Galaxy/Spaceship Fly")

        when stage.started {
            this.size = 30;
            this.heading = 0;
            this.hide();
        }

        when stage.keyPressed("up arrow") {
            this.y += 5;
        }

        when stage.keyPressed("down arrow") {
            this.y -= 5;
        }

        when stage.signalReceived("gameStart") {
            this.setPosition(280, 0);
            this.show();
        }

    }

}