1回答

• 

  慕雪9083869

  2017-03-13 16:00:38

  babyObj.prototype.draw = function () {
     // ctx1
  
     this.x = lerpDistance(mum.x, this.x, 0.98);
     this.y = lerpDistance(mum.y, this.y, 0.98);
  
     //delta angle
     var deltaY = mum.y - this.y;
     var deltaX = mum.x - this.x;
     var beta = Math.atan2(deltaY,deltaX) + Math.PI;
  
     this.angle = lerpAngle(beta,this.angle,0.6);
  
     ctx1.save();
  
     ctx1.translate(this.x, this.y);
     ctx1.rotate(this.angle);
     ctx1.drawImage(this.babyTail, -this.babyTail.width*0.5+23, -this.babyTail.height*0.5);
     ctx1.drawImage(this.babyBody, -this.babyBody.width*0.5, -this.babyBody.height*0.5);
     ctx1.drawImage(this.babyEye, -this.babyEye.width*0.5, -this.babyEye.height*0.5);
  
     ctx1.restore();
  }

  0 0