PFont  UIFont;

neuron network[]=new neuron[5];

neuron selected=null;
void setup()
{
  size(500,500);
  rectMode(CORNER);
  ellipseMode(CENTER);
  
  UIFont=loadFont("KnockoutHTF30JuniorWelterwt-48.vlw");
  for(int i=0;i<network.length;i++)
  {
    network[i]=new neuron(i,new position(0,0));
  }
  
  network[0].p=new position(150,150);
  network[1].p=new position(150,250);
  network[2].p=new position(250,200);
  network[3].p=new position(80,150);
  network[4].p=new position(80,200);


  network[0].weight=1;
  network[1].weight=1;
  network[2].weight=1;
  network[3].weight=1;
  network[4].weight=-1;
    
  network[0].addOutput(network[2]);
  network[1].addOutput(network[2]);

  network[3].addOutput(network[0]);
  network[3].addOutput(network[1]);
  network[4].addOutput(network[0]);
  network[4].addOutput(network[1]);
//  network[2].addOutput(network[4]);
  
}
void draw()
{
  background(60);
  smooth();
  fill(220);
  textFont(UIFont,16);
  text("This sketch demonstrates the creation of a XOR network with",15,350);
  text("simulated neuron cells. Click neuron 3 or 4 to cause a chain",15,370);  
  text("reaction of signals that reach neuron 2. When both neurons",15,390);    
  text("(3 and 4) are firing however, the signal will not reach neuon 2.",15,410);      
  text("Press space bar to stimulate both neuron 3 and 4 at the same time.",15,430);        
  fill(170);
  textFont(UIFont,12);
  text("ref. John Holland, Emergence: From Chaos to Order, 1998",20,460);  
  noSmooth();
  if(keyPressed)
  {
    if(key==' ')
    {  
      network[3].recieve(new signal(1,1));
      network[4].recieve(new signal(1,1));
    }  
  }  
  updateNetwork(network);
  drawNetwork(network);  
  
  selectNeuron();
  displayNeuronInfo(selected);

  if(mousePressed)
  {
    float distance=dist(mouseX,mouseY,selected.p.x,selected.p.y);
    if(distance<15&&(selected.id==3||selected.id==4))
      selected.recieve(new signal(.5,1));  
  }
}

void updateNetwork(neuron n[])
{
  for(int i=0;i<n.length;i++)
  {    
    n[i].update();          
  }
  for(int s=0;s<n.length;s++)
  {
    n[s].updateFire();          
  }  
}
void selectNeuron()
{
  if(selected==null)
    selected=network[0];
  else
  {
    position mp=new position(mouseX,mouseY);      
    for(int i=0;i<network.length;i++)
    {
      float distanceNow=dist(mp,selected.p);
      if(dist(mp,network[i].p)<distanceNow)
      {            
        selected=network[i];
      }
      if(mousePressed&&distanceNow<15)
      {
//        selected.recieve(new signal(.2,1));          
//        selected.pulse();
      }
      
    }    
  }
}

void keyReleased()
{

}

void mouseReleased()
{

}