christmassnake.js

javascript:(function () {  var refreshRate = 100;  var particleLimit = 15;  var snake = {    x: (window.innerWidth * Math.random()) - window.pageXOffset,    y: (window.innerHeight * Math.random()) - window.pageYOffset,    dx: Math.ceil(Math.random() * 30) - 15,    dy: Math.ceil(Math.random() * 30) - 15,    atan2: Math.atan2(this.dx, this.dy) + (Math.PI / 2),    body: [],    update: function () {      // IIC.setAngle(Math.ceil(Math.random() * 360) * Math.PI / 180);      if (this.x < 0) {        this.x = 0;        this.dx = -this.dx;      } else if (this.x > window.innerWidth) {        this.x = window.innerWidth;        this.dx = -this.dx;      }      if (this.y < 0) {        this.y = 0;        this.dy = -this.dy;      } else if (this.y > window.innerHeight) {        this.y = window.innerHeight;        this.dy = -this.dy;      }      var ddx = (this.dx + ((Math.random() * 10) - 5));      var ddy = (this.dy + ((Math.random() * 10) - 5));      this.x = this.x + ddx;      this.y = this.y + ddy;      this.atan2 = Math.atan2(ddy, ddx) + (Math.PI / 2);      this.body.unshift({        x: this.x,        y: this.y,        atan2: this.atan2      });      if (this.body.length > particleLimit) {        this.body.pop();      }      for (var i = this.body.length - 1; i >= 0; --i) {        IIC.setAngle(this.body[i].atan2);        mouseClick({          clientX: this.body[i].x - window.pageXOffset,          clientY: this.body[i].y - window.pageYOffset,          button: 0        });      }    }  }  setInterval(function () {    snake.update();  }, refreshRate);})();