//*****************************************************
//*                                                   *
//* NAME              : Matthew Seguin                *
//* Program Name      : array.ino                     *
//* Date              : 2023-03-01                    *
//* Program Desc      : Light chaser with multiple    *
//*                   patterns, 3 LEDs and a speaker. *
//*                                                   *
//*****************************************************

int buttonPin           = 6;      //set pin for push button
int speaker             = 7;      //set pin for speaker
int delayTime           = 250;    //set time for delay
int patternNumber       = 0;      //which pattern is in use
int patternArray [6][3] = { {4, 12, 28} , {24, 20, 12} , {16, 8, 4} , {16, 24, 28} , {12, 20, 24} , {4, 8, 16} }; //sets the numbers in the array
int patternStep         = 0;      //which step the pattern is on

void setup() {

  DDRB = B111111;                     //sets pins 8-13 to output (1=output, 0=input)  
                      
  pinMode(buttonPin, INPUT_PULLUP);   //sets pin 8 to input
  pinMode(speaker, OUTPUT);           //sets pin 7 to output

} // end setup

void loop() {

  if (digitalRead(buttonPin) == LOW){   //check if button is pressed
    patternNumber = patternNumber + 1;  //if pressed, next pattern
    if (patternNumber == 6){            //if pattern number is too high, reset
      patternNumber = 0;                //set pattern number to 0
    } // end if statement
    tone (speaker, 500, 250);           //if pressed, play tone
    delay(110);                         //delay 1.1 seconds
  } //end if statement

  PORTB = patternArray[patternNumber] [patternStep]; //set outputs to array pattern and step
  delay(delayTime);                                  //delay 250ms
  patternStep++;                                     //up patternstep by 1

  if (patternStep == 3){                    //if patternstep equals 3
    patternStep = 0;                        //set pattern to 0
  }
   //end if statement
  
} //end loop