逃跑病毒 - OpenProcessing

mySketch
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class Ball{
  constructor(args){
    this.r = args.r || 100;
    this.p = args.p || {x: width/2 , y: height/2} ;
    this.v = {
      x: random(-2,2),
      y: random(-2,2)
    };
    this.a = args.a || {x:0 , y:0};
    this.color = random(["#780116","#f7b538","#db7c26","#d8572a","#c32f27"]);
    this.mode = random(["happy","sad"]);
    this.rId = random(1000);
  }
  draw(){
    push();
      
      fill(this.color);
      ellipse(this.p.x,this.p.y,this.r);
      translate(this.p.x,this.p.y);
      //
      if(this.mode == "happy"){
        fill(255);
        ellipse(0,0,this.r/2,this.r/2);
        fill(0);
        ellipse(0,0,this.r/3,this.r/3);
      }else{
        fill(255);
        arc(0,0,this.r/2,this.r/2,0,PI);
        fill(0);
        arc(0,0,this.r/3,this.r/3,0,PI);
      }
      // 畫手
      stroke(this.color);
      strokeWeight(4);
      // line(this.r/2,0,this.r,0)
      noFill();
      
      for(let o =0 ; o < 8 ; o++){
        beginShape();
        rotate(PI/4);
        for(let i =0 ; i < 30 ; i+=3){
          vertex(this.r/2+i*2,sin(i/5+-frameCount/5 +this.rId )*10);
        }
        endShape();
      }
      
    pop();
  }
  update(){
    this.p.x += this.v.x;
    this.p.y += this.v.y;
    this.v.x += this.a.x;
    this.v.y += this.a.y;
    // 浮動
    if(this.mode == "happy"){
      this.p.y += sin(frameCount/(10+this.rId/100))*5;
    }
    // 摩擦力
    // this.v.x *= 0.99;
    this.v.y *= 0.99;
    if(this.p.y > height){
      this.v.y = -abs(this.v.y);
    }
  }
  escape(){
    this.v.x = random(-10,10)
  }
  setHappy(){
    this.mode = "happy";
  }
  isTouched(){
    let touchedRange = dist(mouseX,mouseY,this.p.x,this.p.y);
    if(touchedRange < this.r){
      return true;
    }else{
      return false;
    }
  }
}
let balls=[];
function setup() {
  createCanvas(windowWidth, windowHeight);
  background(0);
  for(let i = 0 ; i < 50 ; i++){
    let ball = new Ball({
      r: random(100),
      p:{x:random(width), y:random(height)},
    });
    balls.push(ball);
  }
}
​
function draw() {
  background(0);
  for(let ball of balls){
    noStroke();
    ball.update();
    ball.draw();
    if(ball.isTouched()){
      ball.color ="#94E8B4";
      ball.escape();
    }
  }
}
​
function mousePressed(){
  let ball = new Ball({
  r: random(100),
  p:{x:mouseX, y:mouseY},
  });
  balls.push(ball);
  for(let ball of balls){
    ball.setHappy();
    ball.escape();
  }
}
​
​