void setup() 
{
  size(SCREEN_WIDTH, SCREEN_HEIGHT, P3D);
  colorMode(RGB, 255, 255, 255);
  frameRate(30);
  
  int i;  
  
  GAME_COLORS = new color[8];
  GAME_COLORS[0] = color( 0, 0, 0 );            //black
  GAME_COLORS[1] = color( 255, 0, 0 );          //red
  GAME_COLORS[2] = color( 255, 255, 0 );        //yellow
  GAME_COLORS[3] = color( 255, 128, 0 );        //orange (red + yellow)
  GAME_COLORS[4] = color( 0, 0, 255 );          //blue
  GAME_COLORS[5] = color( 128, 0, 128 );        //purple (blue + red)
  GAME_COLORS[6] = color( 0, 255, 0 );          //green (blue + yellow)
  GAME_COLORS[7] = color( 255, 255, 255 );      //white (blue + red + yellow)
  
  HUD = new HeadsUpDisplay();
  HUD.Initialize();
  
  BLACK = new Black[NUM_BLACK];
  for( i = 0; i < NUM_BLACK; ++i )
  {
    BLACK[i] = new Black();
    BLACK[i].Initialize();
  }

  COLORS = new Color[NUM_COLORS];
  for( i = 0; i < NUM_COLORS; ++i )
  {
    COLORS[i] = new Color();
    COLORS[i].Initialize();
    COLORS[i].m_UniqueID = i;
  }
  for( i = 0; i < NUM_USED_COLORS; ++i )
  {
    COLORS[i].m_Used = true;
  }
  
  GRID = new Grid();
  GRID.Initialize();
  
  INPUT = new Input();
  INPUT.Initialize();
}

void draw() 
{
  //interpolate background color if necessary
  BACKGROUND_COLOR = GAME_COLORS[ HUD.colorQueue[5] ];
  if( HUD.timeUntilNextColor < 10 )
  {
    float ratio = (float)HUD.timeUntilNextColor / 10.f;
    BACKGROUND_COLOR = lerpColor( GAME_COLORS[ HUD.colorQueue[6] ], GAME_COLORS[ HUD.colorQueue[5] ], ratio );    
  }
  
  background( BACKGROUND_COLOR );
  
  int i;  
  if( PAUSED == false )
  {
    --ADD_NEW_SQUARE_TIMER;
    if( ADD_NEW_SQUARE_TIMER < 0 )
    {
      ADD_NEW_SQUARE_TIMER = ADD_NEW_SQUARE_TIMER_RESET;
      AddNewSquare();
    }
    
    INPUT.Update();
    HUD.Update();
    GRID.AddBitsToGrid();
    GRID.ComputeForcesOnBits();
  
    for( i = 0; i < NUM_BLACK; ++i )
    {
      BLACK[i].Update();
    } 
    for( i = 0; i < NUM_COLORS; ++i )
    {
      COLORS[i].Update();
    } 
  }
  
  for( i = 0; i < NUM_COLORS; ++i )
  {
    COLORS[i].Draw();
  }   
  
  INPUT.Draw();
  
  for( i = 0; i < NUM_BLACK; ++i )
  {
    BLACK[i].Draw();
  }  
  
  HUD.Draw();
  
  //GRID.Draw();  
}

void RESET()
{
  int i;
  HUD.Reset();  
  for( i = 0; i < NUM_BLACK; ++i )
  {
    BLACK[i].Reset();
  }  
  for( i = 0; i < NUM_COLORS; ++i )
  {
    COLORS[i].Reset();
  }  
  for( i = 0; i < NUM_USED_COLORS; ++i )
  {
    COLORS[i].m_Used = true;
  }  
  
  PAUSED = true;
}