cn-sensei-guides/02-yellow/02-02-meteors-pt2.js

//meteor - Update Every Frame
//Code below is given up to the next comment where ninjas add to code to "make the game more interesting"
//Should also talk about where in the game the score is being added.
moveX($this);
moveY($this);

var bullet = $this.scene.projectile;

if(bullet && $this.isTouching(bullet)){
    
    $this.scaleX($this.scaleX()/2);
    $this.scaleY($this.scaleY()/2);
    $this.offsetX($this.offsetX()/2);
    $this.offsetY($this.offsetY()/2);
    
    $this.scene.projectile = null;
    bullet.remove();
    
    $this.scene.scoreValue++;
    score.text("Score: "+$this.scene.scoreValue);
    //this is where you add the code in step 3, inside the if ($this.isTouching(bullet)) statement
    //Good place to have ninja explain what this code is doing
    //Review conditionals and comparison operators
    //Remember that this section is all about Math
    //Draw the connections between math and computer science - math is definitely important in game dev!
    if (this.scaleX() >= 0.25) {
        var ncircle = $this.clone();
        ncircle.x($this.x()+100);
    } else {
        $this.remove();
    }
}
//Ask the ninja what this code is doing
//It is given to us but we should know what it is doing.
//They've seen this code in Hungry Ninja,
//The follow code resets the position of the meteor when he flies off the screen.
if($this.y()>700){
    $this.y(0);
}

if($this.y()<-100){
    $this.y(600);
}

if($this.x()>900){
    $this.x(0);
}

if($this.x()<-100){
    $this.x(800);
}