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#13 Meteor shower Java mode

image
image1600×900 105 KB

Code 
ArrayList<star> stars = new ArrayList<star>();
ArrayList<particle> particles = new ArrayList<particle>();
float globalG = 0.1, colorOffset = 50, minStarSpeed = 2, maxStarSpeed = 6, minParticleSpeed = 2, maxParticleSpeed = 3, starSize = 8;
void setup() {
  fullScreen();
  //size(600,600);
  colorMode(HSB);
}
void draw() {
  background(0);
  for(int i = 0; i < stars.size(); i++) {
    stars.get(i).move();
    stars.get(i).display();
    //checking for stars to delete
    if(stars.get(i).x > width*1.5 || stars.get(i).y > height*1.5) {
      stars.remove(i);
    }
  }
  for(int i = 0; i < particles.size(); i++) {
    particles.get(i).move();
    particles.get(i).display();
    //deleting particels
    if(particles.get(i).age > particles.get(i).maxAge) {
      particles.remove(i);
    }
  }
  if(random(100) > 90) {
    addStar(random(width/2),random(height/2),random(minStarSpeed,maxStarSpeed),random(minStarSpeed,maxStarSpeed),color(random(255),255,255));
  }
}
void mousePressed() {
  addStar(mouseX,mouseY,5,5,color(random(255),255,255));
}
void addStar(float x, float y, float xs, float ys, color clrFill) {
  stars.add(new star(x,y,xs,ys,clrFill));
}

class star {
  float xs,ys, x,y, r = starSize;
  color clr;
  star(float x_, float y_, float xs_, float ys_, color clr_) {
    x = x_;
    y = y_;
    xs = xs_;
    ys = ys_;
    clr = clr_;
  }
  void display() {
    fill(clr);
    noStroke();
    circle(x,y,r*2);
  }
  void move() {
    x += xs;
    y += ys;
    float rep = random(2,10);
    for(int i = 0; i < rep; i++) {
      float dir = random(TWO_PI), speed = random(minParticleSpeed,maxParticleSpeed);
      addParticle(x,y,cos(dir)*speed,sin(dir)*speed,0,20, color(hue(clr)+random(-colorOffset/2, colorOffset/2),255,255));
    }
  }
}
class particle {
  float x,y,xs,ys,age,maxAge;
  int id;
  color clr;
  particle(float x_, float y_, float xs_, float ys_, int startAge_, int maxAge_, color clrFill) {
    x = x_;
    y = y_;
    xs = xs_;
    ys = ys_;
    age = startAge_;
    maxAge = maxAge_;
    clr = clrFill;
  }
  void display() {
    fill(clr, map( age,0,maxAge,255,0));
    noStroke();
    circle(x,y,5);
  }
  void move() {
    ys+=globalG;
    x += xs;
    y += ys;
    age++;
  }
}
void addParticle(float x, float y, float xs, float ys, int startAge, int maxAge, color clrFill) {
  particles.add(new particle(x,y,xs,ys,startAge,maxAge, clrFill));
}