// ****************************************************************
// *                                                              *
// * NAME           : Marisa Johnston                             *
// * Program Name   : Light Chaser .ino                           *
// * Date           : 2023-02-21                                  *
// * Desc           : Create a light chaser to turn on LEDs       *
// *                                                              *
// ****************************************************************



int redLED        = 12;       // the pin for the blue led
int greenLED      = 11;       // the pin for the red led
int yellowLED     = 10;       // the pin for the pink led
int buttonPin     = 8;        // the pin for the button  
int speaker       = 7;        // the pin for the speaker 
int patternNumber = 1;        // the delay time for lights
int delayTime     = 100;      // delay in ms between pattern steps 

          
void setup() {
pinMode(redLED,  OUTPUT);           // config pin 12 to an OUTPUT
pinMode(greenLED, OUTPUT);          // config pin 11 to an OUTPUT 
pinMode(yellowLED, OUTPUT);         // config pin 10 to an 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 == 7){               // check if we exceeded the max patterns 
      patternNumber = 1;                   // if so reset pattern to 1
    }// end if ()
    tone (7,500,100);
    delay(110);
  }// end if()

  if (patternNumber == 1 ) {
    digitalWrite(redLED, LOW);            // turn off power to pin 12
    digitalWrite(greenLED, LOW);          // turn off power to pin 11
    digitalWrite(yellowLED, HIGH);        // send power to pin 10
    delay(delayTime);                     // wait 100 ms

    digitalWrite(redLED, LOW);            // turn off power to pin 12
    digitalWrite(greenLED, HIGH);         // send power to pin 11
    digitalWrite(yellowLED, HIGH);        // turn off power to pin 10
    delay(delayTime);                     // wait 100 ms 

    digitalWrite(redLED, HIGH);           // turn off power to pin 12
    digitalWrite(greenLED, HIGH);         // turn off power to pin 11
    digitalWrite(yellowLED, HIGH);        // send power to pin 10
    delay(delayTime);                     // wait 100 ms 
  }

  else if (patternNumber == 2 ) {
    digitalWrite(redLED, HIGH);           // send power to pin 12
    digitalWrite(greenLED, HIGH);         // send power to pin 11
    digitalWrite(yellowLED, LOW);         // turn off power to pin 10
    delay(delayTime);                     // wait 100 ms 

    digitalWrite(redLED, HIGH);           // send power to pin 12
    digitalWrite(greenLED, LOW);          // turn off power to pin 11
    digitalWrite(yellowLED, HIGH);        // send power to pin 10
    delay(delayTime);                     // wait 100 ms 

    digitalWrite(redLED, LOW);            // turn off power to pin 12
    digitalWrite(greenLED, HIGH);         // send power to pin 11
    digitalWrite(yellowLED, HIGH);        // send power to pin 10
    delay(delayTime);                     // wait 100 ms  
  }

  else if (patternNumber == 3 ) {
    digitalWrite(redLED, HIGH);           // send power to pin 12
    digitalWrite(greenLED, LOW);          // turn off power to pin 11
    digitalWrite(yellowLED, LOW);         // turn off power to pin 10
    delay(delayTime);                     // wait 100 ms 

    digitalWrite(redLED, LOW);            // turn off power to pin 12
    digitalWrite(greenLED, HIGH);         // send power to pin 11
    digitalWrite(yellowLED, LOW);         // turn off power to pin 10
    delay(delayTime);                     // wait 100 ms 

    digitalWrite(redLED, LOW);            // turn off power to pin 12
    digitalWrite(greenLED, LOW);          // turn off power to pin 11
    digitalWrite(yellowLED, HIGH);        // send power to pin 10
    delay(delayTime);                     // wait 100 ms
  }  

  else if (patternNumber == 4 ) {
    digitalWrite(redLED, HIGH);           // send power to pin 12
    digitalWrite(greenLED, LOW);          // turn off power to pin 11
    digitalWrite(yellowLED, LOW);         // turn off power to pin 10
    delay(delayTime);                     // wait 100 ms 

    digitalWrite(redLED, HIGH);           // send power to pin 12
    digitalWrite(greenLED, HIGH);         // send power to pin 11
    digitalWrite(yellowLED, LOW);         // turn off power to pin 10
    delay(delayTime);                     // wait 100 ms 

    digitalWrite(redLED, HIGH);           // send power to pin 12
    digitalWrite(greenLED, HIGH);         // send power to pin 11
    digitalWrite(yellowLED, HIGH);        // send power to pin 10
    delay(delayTime);                     // wait 100 ms  
  }

  else if (patternNumber == 5 ) {
    digitalWrite(redLED, LOW);            // turn off power to pin 12
    digitalWrite(greenLED, HIGH);         // send power to pin 11
    digitalWrite(yellowLED, HIGH);        // send power to pin 10
    delay(delayTime);                     // wait 100 ms 

    digitalWrite(redLED, HIGH);           // send power to pin 12
    digitalWrite(greenLED, LOW);          // turn off power to pin 11
    digitalWrite(yellowLED, HIGH);        // send power to pin 10
    delay(delayTime);                     // wait 100 ms 

    digitalWrite(redLED, HIGH);           // send power to pin 12
    digitalWrite(greenLED, HIGH);         // send power to pin 11
    digitalWrite(yellowLED, LOW);         // turn off power to pin 10
    delay(delayTime);                     // wait 100 ms  
  }

  else if (patternNumber == 6 ) {
    digitalWrite(redLED, LOW);            // turn off power to pin 12
    digitalWrite(greenLED, LOW);          // turn off power to pin 11
    digitalWrite(yellowLED, HIGH);        // send power to pin 10
    delay(delayTime);                     // wait 100 ms 

    digitalWrite(redLED, LOW);            // turn off power to pin 12
    digitalWrite(greenLED, HIGH);         // send power to pin 11
    digitalWrite(yellowLED, LOW);         // turn off power to pin 10
    delay(delayTime);                     // wait 100 ms 

    digitalWrite(redLED, HIGH);           // send power to pin 12
    digitalWrite(greenLED, LOW);          // turn off power to pin 11
    digitalWrite(yellowLED, LOW);         // turn off power to pin 10
    delay(delayTime);                     // wait 100 ms  

  }// end if()

} // end loop()