// Inspired and Modified code from http://itp.nyu.edu/~ttn206/icm/week3/crosses_moving/
// By Lisa Cho and Yonatan Kelib.
// We created a array to simplfy the code and make it more efficent...we cut close to 30 lines of code from the original code
// Teamwork is awesome :-)


Cross[] cross;

int num;
void setup ()  {
  size (500,300);

 num = 30; 
  cross = new Cross[num]; 
  
  for (int i=0; i<30; i++) { 
  
      cross[i] = new Cross(color(random(200)),random(width),random(height),random(i*2),random(i+5));  
    } 

}


void draw ()  {
  framerate (10);
  background (112,128,144);
  rectMode (CENTER);

 for(int i=0; i<num; i++) { 
    cross[i].render(); 
    cross[i].move(); 
  } 
}

//Our Cross class
class Cross
  {
  //instance variables (color, xpos, ypos, speed, crossSize)
  color c;
  float xpos;
  float ypos;
  float speed;
  float crossSize;
  
  //constructor definition
  Cross (color col, float xp, float yp, float sp, float cs)  {
    c = col;
    xpos = xp;
    ypos = yp;
    speed = sp;
    crossSize = cs;
}

//function to display crosses
void render () {
  noFill ();
  stroke (c);
  rect (xpos-crossSize,ypos, crossSize,crossSize);
  rect (xpos+crossSize,ypos, crossSize,crossSize);
  rect (xpos,ypos-crossSize, crossSize,crossSize);
  rect (xpos,ypos+crossSize, crossSize,crossSize);
  fill (c);
  rect (xpos,ypos, crossSize,crossSize);
} 

//funtion to move crosses
void move ()  {
  xpos = xpos + speed;
  if (xpos > width)  {
    xpos = 0;
  }
  }
  }