Week 7

Shitty Geometry Dash

Week 7’s assignment was to create a device using I²C protocol. I decided to use an Arduino Nano because I was at work and did not have my ATtiny board. I connected the board to a 0.91 OLED screen on a I²C breakout. With some AI assistance, I was able to create a very very very very low fidelity version of Geometry Dash. After debugging, I scanned the signal on an oscilloscope. The square wave was there as expected, but interestingly there were some strange artifacts inside some wavelengths.

#include 
    #include 
    #include 
    
    U8G2_SSD1306_128X32_UNIVISION_F_HW_I2C u8g2(U8G2_R0, U8X8_PIN_NONE);
    
    const int buttonPin = 2;
    int playerY = 24;
    int playerV = 0;
    bool jumping = false;
    bool gameOver = false;
    int obstacleX = 128;
    const int obstacleW = 6;
    const int obstacleH = 6;
    int groundY = 30;
    int score = 0;
    int topScore = 0;
    int nextGap = 0;
    unsigned long lastFrame = 0;
    const int frameDelay = 40;
    
    void setup() {
      pinMode(buttonPin, INPUT_PULLUP);
      randomSeed(analogRead(A0));
      u8g2.begin();
      u8g2.setFont(u8g2_font_5x8_tf);
    }
    
    void loop() {
      unsigned long now = millis();
      if (now - lastFrame < frameDelay) return;
      lastFrame = now;
    
      if (digitalRead(buttonPin) == LOW && !jumping) {
        jumping = true;
        playerV = -6;
      }
    
      if (jumping) {
        playerY += playerV;
        playerV += 1;
        if (playerY >= 24) {
          playerY = 24;
          playerV = 0;
          jumping = false;
        }
      }
    
      obstacleX -= 3;
      if (obstacleX < -obstacleW - nextGap) {
        obstacleX = 128 + random(10, 40);
        nextGap = random(15, 60);
        score++;
        if (score > topScore) topScore = score;
      }
    
      bool hit = (obstacleX < 20 && obstacleX + obstacleW > 10 && playerY > 22);
      if (hit) {
        score = 0;
        obstacleX = 128;
        playerY = 24;
        playerV = 0;
        jumping = false;
      }
    
      u8g2.firstPage();
      do {
        u8g2.drawHLine(0, groundY, 128);
        u8g2.drawBox(10, playerY, 6, 6);
        u8g2.drawBox(obstacleX, 24, obstacleW, obstacleH);
        u8g2.setCursor(0, 8);
        u8g2.print("Score:");
        u8g2.print(score);
        u8g2.setCursor(70, 8);
        u8g2.print("Top:");
        u8g2.print(topScore);
      } while (u8g2.nextPage());
    }