/*
 * ARTS 102 - Aesthetics of the Algorithmic Image
 * Johannes Goerz (johannes.goerz@gmail.com)
 * 2005-12-04
 */
 
Tentacle[] t;
int maxtentacles, framecounter, life;
int[][] startpoints;
color[] tcolors;

void setup() {
  // general procesing parameters
  size(600,600);
  smooth();
  background(0);
  framerate(25);
  noStroke();

  // animation parameters
  maxtentacles = 16;
  life = 30;
  
  // setup starting positions;  
  startpoints = new int[4][2];
  startpoints[0][0] = 80;
  startpoints[0][1] = 80;
  startpoints[1][0] = width-80;
  startpoints[1][1] = height-80;
  startpoints[2][0] = 80;
  startpoints[2][1] = height-80;
  startpoints[3][0] = width-80;
  startpoints[3][1] = 80;

  // setup tentacle colors
  tcolors = new color[3];
  tcolors[0] = color(128,0,0,100);
  tcolors[1] = color(0,128,0,100);
  tcolors[2] = color(0,0,128,100);


  // create tentacles
  t = new Tentacle[maxtentacles];
  for(int i = 0; i < maxtentacles; i++) {
    createNewTentacle( i );
  }
}

void draw() {
  noStroke();
  // fade background every frame
  if(framecounter%1==0) {
    fill(0,30);
    rect(0,0,width,height);
  }
  framecounter++;

  // move tentacles
  for(int i = 0; i < t.length; i++) {
    int prey;
    while(true) {
      prey = int(random(0,t.length));
      if(prey != i && prey < t.length) {
        break;
      }
    }
    t[i].move( t[prey].position );
  }
}

void createNewTentacle( int id ) {
  t[id] = new Tentacle( int(random(50,width-50)), int(random(50,height-50)));
  t[id].initialize( id, tcolors[int(random(0,tcolors.length-0.000001))], int(life + random(life)), false);
  
}

void mousePressed() { 
  noLoop();
} 

void mouseReleased() {
  loop();
}