i have this game im making where theses balls fall to the ground and the player moves a "pointy device" horizontally to "pop" the balls in order to get points.

i was hoping someone could help me with the popping part here's what i have so far:








ArrayList balls;
int ballRadius = 25;
int level = 1;
int score = 0;

void setup(){

  size (450, 700);
  fill(0);
  smooth();
  stroke(0);
  strokeWeight(4);
  PFont font = loadFont("ComicSansMS-Bold-24.vlw");
  textFont(font);
  balls = new ArrayList();
 
  for (int i = 0; i < level*2; i++){
   
         balls.add(new Ball(random(15,width-15), random(-300,0), ballRadius));
  }
 
 

}

void draw(){
 
  background(255);
  frameRate(45);
  fill(0);
  rect(mouseX, height-10, 50,10);
  triangle((mouseX)+18,height, (mouseX)+25, height-40, (mouseX)+32, height);
  text("Score: " + score, 10,30);
  text("Level: " + level, width-150,30);
 
  for (int i = balls.size()-1; i >= 0; i--) {
    Ball ball = (Ball) balls.get(i);
    ball.move();
    ball.display();
 
  }
 

}

/*
void mousePressed() {
 
  balls.add(new Ball(mouseX, 0, ballRadius));// A new ball object is added to the end of the ArrayList
 
}

*/


// Bouncing ball class

class Ball {
 
  float x;
  float y;
  float speed;
  float gravity;
  float w;
  int bounceCount = 0;

  Ball(float xPos, float yPos, float bWidth) {
    x = xPos;
    y = yPos;
    w = bWidth;
    speed = 0;
    gravity = 0.98;
  }
 
    void move() {
   
    speed = speed + gravity;// Adds gravity to the speed   
    y = y + speed;// Adds speed to y location
   
    /*
    If square reaches the bottom
    Reverse speed
    */
    if (y > height) {
      speed = speed * -0.8;
      y = height;
      bounceCount++;
      //println(bounceCount);

    }
    if (x == (mouseX)+25 && y == height-10){
    noLoop();
    }
   
  }

  void display()
  {
    if (bounceCount == 0){
    fill (0,255,0);
    }
    else if (bounceCount == 1){
    fill (255,255,0);
    }
    else if (bounceCount == 2){
    fill (255,150,0);
    }
    else if (bounceCount == 3||bounceCount == 4||bounceCount == 5){
    fill (255,0,0);
    }
    else if (bounceCount == -1){
      fill(255);
      stroke(255);
    }
    else{
    fill(200,200,200); 
    }
   
    ellipse(x,y,w,w);
  }
}