OLED 미니 게임기

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_W 128
#define SCREEN_H 64
Adafruit_SSD1306 display(SCREEN_W, SCREEN_H, &Wire, -1);

const int JOY_X = A0;
const int JOY_BTN = 2;
const int BUZZER = 8;

// Player
int playerX = 10;
int playerY = 32;
const int playerSize = 6;

// Obstacles
const int MAX_OBS = 4;
int obsX[MAX_OBS];
int obsY[MAX_OBS];
int obsH[MAX_OBS];
int obsSpeed = 2;

int score = 0;
bool gameOver = false;
unsigned long lastFrame = 0;

void resetGame() {
  playerY = 32;
  score = 0;
  obsSpeed = 2;
  gameOver = false;
  for (int i = 0; i < MAX_OBS; i++) {
    obsX[i] = SCREEN_W + i * 40;
    obsY[i] = random(10, SCREEN_H - 20);
    obsH[i] = random(8, 20);
  }
}

void setup() {
  pinMode(JOY_BTN, INPUT_PULLUP);
  pinMode(BUZZER, OUTPUT);
  
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.clearDisplay();
  display.setTextColor(SSD1306_WHITE);
  
  randomSeed(analogRead(A2));
  resetGame();
}

void loop() {
  if (millis() - lastFrame < 33) return;  // ~30fps
  lastFrame = millis();

  if (gameOver) {
    display.clearDisplay();
    display.setTextSize(2);
    display.setCursor(15, 10);
    display.print("GAME OVER");
    display.setTextSize(1);
    display.setCursor(35, 35);
    display.print("Score: ");
    display.print(score);
    display.setCursor(20, 50);
    display.print("Press to restart");
    display.display();

    if (digitalRead(JOY_BTN) == LOW) {
      delay(300);
      resetGame();
    }
    return;
  }

  // Read joystick Y axis
  int joyVal = analogRead(JOY_X);  // Using X for vertical
  if (joyVal < 400) playerY -= 3;
  if (joyVal > 600) playerY += 3;
  playerY = constrain(playerY, 0, SCREEN_H - playerSize);

  // Update obstacles
  for (int i = 0; i < MAX_OBS; i++) {
    obsX[i] -= obsSpeed;
    if (obsX[i] < -10) {
      obsX[i] = SCREEN_W + random(10, 30);
      obsY[i] = random(5, SCREEN_H - 20);
      obsH[i] = random(8, 20);
      score++;
      tone(BUZZER, 2000, 30);

      // Increase speed every 5 points
      if (score % 5 == 0 && obsSpeed < 6) obsSpeed++;
    }

    // Collision detection
    if (obsX[i] < playerX + playerSize &&
        obsX[i] + 6 > playerX &&
        obsY[i] < playerY + playerSize &&
        obsY[i] + obsH[i] > playerY) {
      gameOver = true;
      tone(BUZZER, 200, 500);
    }
  }

  // Draw
  display.clearDisplay();

  // Ground line
  display.drawLine(0, SCREEN_H - 1, SCREEN_W, SCREEN_H - 1, SSD1306_WHITE);

  // Player (square)
  display.fillRect(playerX, playerY, playerSize, playerSize, SSD1306_WHITE);

  // Obstacles
  for (int i = 0; i < MAX_OBS; i++) {
    display.fillRect(obsX[i], obsY[i], 6, obsH[i], SSD1306_WHITE);
  }

  // Score
  display.setTextSize(1);
  display.setCursor(90, 2);
  display.print("S:");
  display.print(score);

  display.display();
}