/******************************** CHASE THE DOT *******************************\
  | A single point of light moves around the cube randomly and changes colors    |
  | when it tries to go out of bounds                                            |
  |                                                                              |
  | Inspired By: Jonah Glick                                                     |
  | Written By: Asher Glick                                                      |
  |                                                                              |
  | Modified By: S. Dugre to use asynchronous timer                              |
  \******************************************************************************/

int xpos = 0;
int ypos = 0;
int zpos = 0;

int animationSpeed = 100;

void chaseTheDot() {

  if (currentState != lastState) {
    
    lastState = currentState;
    Serial.print("New State = ");
    Serial.println(currentState);
    xpos = 0;
    ypos = 0;
    zpos = 0;

    currentTimer = 0;
    maxTimer = 6250; // 100 ms
  }


  //while (continuePattern) {
  if ( timerReset) {
    switch (random(0, 6)) {
      case 0:
        if (xpos > 0) {
          xpos--;
          break;
        }
        else color = nextColor(color);
      case 1:
        if (xpos < 3) {
          xpos++;
          break;
        }
        else color = nextColor(color);
        xpos--; break;

      case 2:
        if (ypos > 0) {
          ypos--;
          break;
        }
        else color = nextColor(color);
      case 3:
        if (ypos < 3) {
          ypos++;
          break;
        }
        else color = nextColor(color);
        ypos--; break;

      case 4:
        if (zpos > 0) {
          zpos--;
          break;
        }
        else color = nextColor(color);
      case 5:
        if (zpos < 3) {
          zpos++;
          break;
        }
        else color = nextColor(color);
        zpos--; break;
    }
    drawLed(color, xpos, ypos, zpos);
    flushBuffer();
    clearBuffer();
    //delay(animationSpeed);
    
    //animationDelay.start();
    //animationDelayTiming = true;
    //Serial.println("start timer");

    currentTimer = 0;
    timerReset = false;
  }
}