#include "pitches.h"
#include "U8glib.h"
#define VERT_PIN A1
#define HORZ_PIN A0
#define SEL_PIN 13
U8GLIB_SSD1306_128X64 oled(U8G_I2C_OPT_NONE);
const uint8_t ledPins[] = {9, 10, 11, 12};
#define SPEAKER_PIN 8

#define MAX_GAME_LENGTH 100

const int gameTones[] = { NOTE_G3, NOTE_C4, NOTE_E4, NOTE_G5};
uint8_t gameSequence[MAX_GAME_LENGTH] = {0};
uint8_t gameIndex = 0;

void setup() {
  
  for (byte i = 0; i < 4; i++){
    pinMode(ledPins[i], OUTPUT); 
    pinMode(VERT_PIN, INPUT);
    pinMode(HORZ_PIN, INPUT);
    pinMode(SEL_PIN, INPUT_PULLUP);
  }
  pinMode(SPEAKER_PIN, OUTPUT);
  randomSeed(analogRead(A3));
}

void draw(void){
  oled.setFont(u8g_font_helvB10);
  oled.drawStr(0, 20, "Hi Simon");
}

void loop(void){
  oled.firstPage();
  int vert = analogRead(VERT_PIN);
  int horz = analogRead(HORZ_PIN);
  int sel = analogRead(SEL_PIN);
  do {
    draw();
  } while(oled.nextPage());
}

void lightLedAndPlayTone(byte ledIndex) {
  digitalWrite(ledPins[ledIndex], HIGH);
  tone(SPEAKER_PIN, gameTones[ledIndex]);
  delay(300);
  digitalWrite(ledPins[ledIndex], LOW);
  noTone(SPEAKER_PIN);
}

void playSequence() {
  for (int i = 0; i < gameIndex; i++) {
    byte currentLed = gameSequence[i];
    lightLedAndPlayTone(currentLed);
    delay(50);
  }
}