小鱼眼睛图片出不来

没有报错  为什么小鱼眼睛出不来

this.babyEyeTimer = 0;
this.babyEyeCount = 0;
this.babyEyeInterval = 1000;

this.babyEyeTimer += deltaTime;
if (this.babyEyeTimer > this.babyEyeInterval) {
this.babyEyeCount = (this.babyEyeCount + 1) % 2;//[0,1]
this.babyEyeTimer %= this.babyEyeInterval;

if(this.babyEyeCount==0){
 this.babyEyeInterval=Math.random()*1500+2000;
}else{
 this.babyEyeInterval=200;
}
}

var babyEyeCount=this.babyEyeCount;
ctx1.drawImage(babyEye[babyEyeCount], -babyEye[babyEyeCount].width * 0.5, -babyEye[babyEyeCount