int timeSteps=0;

scrollBar genomeScroll;
PFont uiFont;
boolean displayUI=true;
boolean displayNeuronUI=false;
boolean displayGenomeUI=true;
boolean useSmooth=false;
int displayMode=2;
position vpos;
position vposT;

boolean dragCreature=false;
boolean stimulateNeuron=false;

boolean useGravity=false;

boolean useMirror=true;


cell selected=null;
int selectedID=0;
position genomeAnchor;

float FRICTION_FORCE=0.95;
float FLUID_FORCE=.2;
vector GRAVITY_VECTOR=new vector(270,.1);

position lightSource=new position(mouseX,mouseY);

position spawnPos=new position(250,350);

creature c;
creature currentCreature;

void setup()
{
  useRK=true;
  size(500,500);
  uiFont=loadFont("KnockoutHTF30JuniorWelterwt-48.vlw");
  textFont(uiFont);
  textMode(CORNER);  
  ellipseMode(CENTER);
  rectMode(CORNER);
  vpos=new position(0,0);  
  vposT=new position(0,0);

  genomeAnchor=new position(25,50);
  position scrollPos=new position(genomeAnchor.x,genomeAnchor.y-15);
  genomeScroll=new scrollBar(scrollPos,400);
  c=new creature(spawnPos);
  currentCreature=c;
  
  lightSource=new position(width/2,-4000);  
}

void draw()
{
  timeSteps++;
  if(displayUI)
    doUI(c);  
  else
  {
    background(0);
    stroke(70);
    noFill();
    rect(10,50,480,400);   
    
    noStroke();
    fill(160);
    textFont(uiFont,16);
    text("press 'h' for interface",15,470);   
    text("press 'c' to create new creature",15,490);       
  }

  if(!currentCreature.checkStability())
  {
    c=new creature(spawnPos);
    currentCreature=c;    
  } 

  currentCreature.update(lightSource);

//  if(keyPressed)
//    doViewport();
  cameraFollow(currentCreature);
  
  vposT=vposT.displace(getHeading(vposT,vpos),dist(vposT,vpos)/5);
  push();
  translate(vposT.x,vposT.y);
  if(!displayUI)
    drawGrid();
  
  noFill();
  stroke(255,150);
  ellipse(lightSource,50);
  
  noStroke();
  fill(255,20);
  ellipse(spawnPos,70);
    
  display(currentCreature);
  displayCreatureData(currentCreature);
  pop();  
}

void mousePressed()
{
     
}

void cameraFollow(creature c)
{
  vpos=new position(width/2-c.p.x,height/2-c.p.y+50);

}

void drawGrid()
{
  stroke(30);
  for(int x=-1000;x<1000;x+=20)
  {
    line(x,-1000,x,1000);    
  }
  for(int y=-1000;y<1000;y+=20)
  {
    stroke(30,30,50*(y+1000)/1000);  
    line(-1000,y,1000,y);    
  }  
}

void doViewport()
{
  if(key=='w')
  {
    vpos=vpos.displace(270,5);    
  }
  if(key=='a')
  {
    vpos=vpos.displace(0,5);    
  }  
  if(key=='s')
  {
    vpos=vpos.displace(90,5);    
  }  
  if(key=='d')
  {
    vpos=vpos.displace(180,5);    
  }  
}
/*void playMode()
{
  if(rawr!=null&&rawr.nodes!=null)
  {  
    if(selected==null)
      selected=rawr.nodes[0];
    position mp=new position(mouseX,mouseY);      
    for(int i=0;i<rawr.nodes.length;i++)
    {
      float distanceNow=dist(mp,selected.p);
      if(dist(mp,rawr.nodes[i].p)<distanceNow)
      {   
        if(!mousePressed||(stimulateNeuron&&!dragCreature))              
        {
          selected=rawr.nodes[i];
          selectedID=i;
        }
      }
    }    
    if(mousePressed)
    {
      if(dragCreature)
      {
        vector v=new vector(selected.p,mp);
        v.m*=.1;
        selected.velocity=selected.velocity.add(v.a,v.m);         
        noFill();    
        stroke(160,180,190,230);
        ellipse(selected.p.x,selected.p.y,10,10);       
      }
      if(stimulateNeuron)
      {
        signal s=new signal(1,1);
        selected.n.recieve(s);
      }
    }
    else
    {
      noFill();    
      stroke(160,160,180,100);
      ellipse(selected.p.x,selected.p.y,16,16);      
//      line(selected.p.x,selected.p.y,mp.x,mp.y);            
    }
  }
}*/