ignore

var posX = 200;

var posY = 150;

var speedX = 6;

var shiftDown = 75;

var invader = [];

​

​

function preload(){

   aliens = loadImage("Spaceinvaders1.png");

}

​

function setup(){

  createCanvas(windowWidth, windowHeight); 

  for (var i = 0; i < 1; i++){

    invader[i] = new Img(posX + i*400, posY, speedX, shiftDown);

  }

}

​

function draw(){

  background(200);

  for (var i = 0; i < invader.length; i++){

     invader[i].display();

     invader[i].move();

  }

}

function Img(x, y, z, w) {

   this.x = x;

   this.y = y;

   this.speedX = z;

   this.shiftDown = w;

   this.display = function(){  

     tint(7, 39, 91);

     imageMode(CENTER);

     image(aliens, this.x, this.y, 0, 0);

   }

   this.move = function(){

     this.x += this.speedX; 

     if ((this.x >= width - 150) || (this.x <= + 150)){

       this.speedX = this.speedX * -1;

       this.y = this.y + this.shiftDown;

    }

  }

}