// **********************************************************************
// *                                                                    *
// * NAME           : Marisa Johnston                                   *
// * Program Name   : Light Chaser array.ino                            *
// * Date           : 2023-03-01                                        *
// * Desc           : Create a light chaser to turn on LEDs using array *
// *                                                                    *
// **********************************************************************

int buttonPin     = 6;        // the pin for the button   
int patternNumber = 0;        // tell which pattern will run 
int delayTime     = 100;      // delay in ms between pattern steps 
int patternStep   = 0;        // tell which pattern step will run
int patternArray [6] [3] = { {4,12,28} , {24,20,12} , {16,8,4} , {16,24,28} , {12,20,24} , {4,8,16} };

void setup() {
DDRB = B111111;                     // set portB to output 
pinMode(buttonPin, INPUT_PULLUP);   // config button to be an INPUT 
pinMode(7, OUTPUT);                 // config speaker on pin 7
} // end setup()

void loop() {
  if ( digitalRead(buttonPin) == LOW ){    // check if pushed 
    patternNumber = patternNumber +1;      // go to next pattern 
    if (patternNumber == 6){               // check if we exceeded the max patterns 
      patternNumber = 0;                   // if so reset pattern to 1
    }// end if ()
    tone (7,500,100);
    delay(110);
  }// end if()

  PORTB = patternArray[patternNumber] [patternStep];   //
  delay(delayTime);
  patternStep++;

  if (patternStep == 3){
    patternStep = 0; 
  } // end if()
}// end loop()