class Particle {
  float x, y; // Position
  float vx, vy; // Velocity;
  int age;
  int spawnTime = 0;
  boolean sex;
  float size = 12;
  
  Particle(float px, float py, int page, boolean psex) {
    x = px + random(-12, 12);
    y = py + random(-12, 12);
    age = page;
    sex = psex;
    vx = random(-2, 2);
    vy = random(-2, 2);
  }
  
  void move(float gx, float gy) {
    vx += 0.1 * random(1) * max(min(gx - x, 1), -1);
    vy += 0.1 * random(1) * max(min(gy - y, 1), -1);
    
    float maxVel = 4 - (norm(age, 0, 1000) * 3);
    if (spawnTime > 0) {
      maxVel = maxVel / (spawnTime / 2);
    }
    vx = max(min(vx, maxVel), -maxVel);
    vy = max(min(vy, maxVel), -maxVel);
    
    x += vx;
    y += vy;
    
    age++;
    
    noStroke();
    float drawSize = 1 + norm(age, 0, 1000) * 12;
    float opacity = 120 - (norm(age, 0, 1000) * 80);
    if (sex) {
      fill(255, 49, 166, opacity); // Pink
    } else {
      fill(49, 153, 255, opacity); // Blue
    }
    if (spawnTime > 0) {
      fill(255, min(opacity * 2, 255));
      drawSize *= 1.5;
    }
    ellipse(x, y, drawSize, drawSize);
    
    spawnTime = max(0, spawnTime - 1);
  }
}