Simon Game - Xylophone Version

A little game interface I'm making..in essence, it will be the simon game....except much harder and xylophone style :)

(For those who don't know, simon game is the following:
http://www.youtube.com/watch?v=4YhVyt4q5HI)

Materials / tools are pretty straight forward...

I used a laser cutter but you can do it manually
Plywood
Acrylic
Arduino UNO
8 Piezo Sensors
8 LEDS

Temporary code has been implemented, missing sound but that will come soon enough

Quick video, day and night 
http://www.youtube.com/watch?v=ZcibT5wFgy4&feature=youtu.be

NOTE: Unless you feel comfortably with coding and playing around with different resistor, I would avise to make this in a larger scale!
Great example: https://www.instructables.com/id/Arduino-Xylophone/ by @audreyobscura

[code]
const int buttonSensor = A5;

int led1 = 5; //LED pins
int led2 = 4;
int led3 = 3;
int led4 = 2;
int turn = 0;
int inputRead = 0;
/*int input2 = LOW;
int input3 = LOW;
int input4 = LOW;*/

int randomArray[50]; //Intentionally long to store up to 100 inputs (doubtful anyone will get this far)
int inputArray[50];


void setup() {

  Serial.begin(9600);

  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT);


  randomSeed(analogRead(0)); //Added to generate "more randomness" with the randomArray for the output function

for (int y=0; y<=99; y++){ //For statement to loop through the output and input functions
   output();
   input();
}

   }
  
void loop() { //Unused void loop(), though for some reason it doesn't compile without this /shrug

}
  
void output() { //function for generating the array to be matched by the player
   
   for (int y=turn; y <= turn; y++){ //Limited by the turn variable
    Serial.println(""); //Some serial output to follow along
    Serial.print("Turn: ");
    Serial.print(y);
    Serial.println("");
    randomArray[y] = random(1, 5); //Assigning a random number (1-4) to the randomArray[y], y being the turn count
    for (int x=0; x <= turn; x++){

      Serial.print(randomArray[x]);

      if (randomArray[x]
== 1) {  //if statements to display the stored values in the array
       digitalWrite(led1, HIGH);
        delay(500);
        digitalWrite(led1, LOW);
        delay(100);
      }

      if (randomArray[x]
== 2) {
       digitalWrite(led2, HIGH);
        delay(500);
        digitalWrite(led2, LOW);
        delay(100);
      }

      if (randomArray[x]
== 3) {
       digitalWrite(led3, HIGH);
        delay(500);
        digitalWrite(led3, LOW);
        delay(100);
      }

      if (randomArray[x]
== 4) {
       digitalWrite(led4, HIGH);
        delay(500);
        digitalWrite(led4, LOW);
        delay(100);
      }
     }
    }
   }
 
 
 
void input() { //Function for allowing user input and checking input against the generated array

   
  
  for (int x=0; x <= turn;){ //Statement controlled by turn count
    /*input1 = digitalRead(switch1);
    input2 = digitalRead(switch2);
    input3 = digitalRead(switch3);
    input4 = digitalRead(switch4);*/

    inputRead = analogRead(buttonSensor);
    //Serial.println(inputRead);
    delay(100);

   
    if (inputRead > 685){ //Checking for button push
      digitalWrite(led1, HIGH);
      //playTone(1915, 200);//Passes tone value and duration of the tone to the playTone function
      delay(200);
      digitalWrite(led1, LOW);
      inputArray[x] = 1;
      delay(50);
      Serial.print(" ");
      Serial.print(1);
      if (inputArray[x] != randomArray[x]) { //Checks value input by user and checks it against
        fail();                              //the value in the same spot on the generated array
      }                                      //The fail function is called if it does not match
      x++;
    }
   
    if ((inputRead > 600) && (inputRead <680)){
      digitalWrite(led2, HIGH);
      delay(200);
      digitalWrite(led2, LOW);
      inputArray[x]
= 2;
     delay(50);
      Serial.print(" ");
      Serial.print(2);
      if (inputArray[x]
!= randomArray[x]
) {
       fail();
      }
      x++;

    }

    if ((inputRead > 535) && (inputRead <590)){
      digitalWrite(led3, HIGH);
      delay(200);
      digitalWrite(led3, LOW);
      inputArray[x]
= 3;
     delay(50);
      Serial.print(" ");
      Serial.print(3);
      if (inputArray[x]
!= randomArray[x]
) {
       fail();
      }
      x++;

    }

    if ((inputRead > 400) && (inputRead <525)){

      digitalWrite(led4, HIGH);
      delay(200);
      digitalWrite(led4, LOW);
      inputArray[x]
= 4;
     delay(50);
      Serial.print(" ");
      Serial.print(4);
      if (inputArray[x]
!= randomArray[x]
) {
       fail();
      
       Serial.print("failed");
      }
      x++;

    }

   }
  delay(500);
  turn++; //Increments the turn count, also the last action before starting the output function over again
}

void fail() { //Function used if the player fails to match the sequence
 
  for (int y=0; y<=5; y++){ //Flashes lights for failure
   digitalWrite(led1, HIGH);
   digitalWrite(led2, HIGH);
   digitalWrite(led3, HIGH);
   digitalWrite(led4, HIGH);
   delay(200);
   digitalWrite(led1, LOW);
   digitalWrite(led2, LOW);
   digitalWrite(led3, LOW);
   digitalWrite(led4, LOW);
   delay(200);
  }
  delay(500);
  turn = -1; //Resets turn value so the game starts over without need for a reset button
}[/code]