/*
 * OLED Animation Example with hackster.io logo
 * https://www.hackster.io/usini/pixel-art-on-oled-display-7f8697
 * U8g2lib.h from https://github.com/olikraus/U8g2_Arduino/blob/master/src/U8g2lib.h
  */

#include <Wire.h> //I2C
#include <U8g2lib.h>
#include <AsyncDelay.h>
#include "logo.h"

AsyncDelay tick;
// U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);
// I2C SSD1306 128x64 from U8g2 Library
U8G2_SSD1306_128X64_NONAME_1_HW_I2C u8g2(U8G2_R0, U8X8_PIN_NONE);

const int FPS = 1000 / 30; //30FPS
bool animation_direction = false;
int animation_state = 0;

void setup() {
  u8g2.begin();
  tick.start(FPS, AsyncDelay::MILLIS);
}

void loop() {
  if (tick.isExpired()) {
    drawAnimation();
    if (animation_direction) {
      animation_state--;
    } else {
      animation_state++;
    }

    if (animation_state == 5) {
      animation_direction = true;
    }

    if (animation_state == 0) {
      animation_direction = false;
    }
    tick.repeat();
  }
}

void drawAnimation() {
  u8g2.firstPage();
  do {
    switch (animation_state) {
      case 0:
        u8g2.drawXBMP(0, 0, logo_width, logo_height, logo_1);
        break;
      case 1:
        u8g2.drawXBMP(0, 0, logo_width, logo_height, logo_2);
        break;
      case 2:
        u8g2.drawXBMP(0, 0, logo_width, logo_height, logo_3);
        break;
      case 3:
        u8g2.drawXBMP(0, 0, logo_width, logo_height, logo_4);
        break;
      case 4:
        u8g2.drawXBMP(0, 0, logo_width, logo_height, logo_5);
        break;
      case 5:
        u8g2.drawXBMP(0, 0, logo_width, logo_height, logo_6);
        break;
    }
  } while ( u8g2.nextPage() );
}