#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>

// Pins for the screen (SPI)
#define TFT_CS   15
#define TFT_DC   2
#define TFT_RST  4
// Note: Connect Screen SDA -> 23, Screen SCL -> 18

// Button for jumping
#define JUMP_BUTTON 0 

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

// Game Variables
int birdY, birdVy;
int pipeX, pipeGapY;
int score = 0;
bool isGameOver = true;

void setup() {
  pinMode(JUMP_BUTTON, INPUT_PULLUP);
    
      tft.begin();
        tft.setRotation(0);
          tft.fillScreen(ILI9341_CYAN);
            
              resetGame();
              }

              void loop() {
                // Check button press (LOW means pressed because of INPUT_PULLUP)
                  if (digitalRead(JUMP_BUTTON) == LOW) {
                       if (isGameOver) {
                              resetGame();
                                     delay(500);
                                          } else {
                                                 birdVy = -6; // Jump
                                                      }
                                                        }

                                                          if (!isGameOver) {
                                                              updateGame();
                                                                }
                                                                  delay(20);
                                                                  }

                                                                  void resetGame() {
                                                                    tft.fillScreen(ILI9341_CYAN);
                                                                      birdY = 160;
                                                                        birdVy = 0;
                                                                          pipeX = 240;
                                                                            pipeGapY = 100;
                                                                              score = 0;
                                                                                isGameOver = false;
                                                                                }

                                                                                void updateGame() {
                                                                                  // Erase old positions
                                                                                    tft.fillRect(50, birdY, 10, 10, ILI9341_CYAN);
                                                                                      tft.fillRect(pipeX+30-3, 0, 3, pipeGapY, ILI9341_CYAN);
                                                                                        tft.fillRect(pipeX+30-3, pipeGapY+80, 3, 320, ILI9341_CYAN);

                                                                                          // Update Physics
                                                                                            birdVy += 1; // Gravity
                                                                                              birdY += birdVy;
                                                                                                pipeX -= 3;  // Pipe speed

                                                                                                  // Reset Pipe
                                                                                                    if (pipeX < -30) {
                                                                                                        pipeX = 240;
                                                                                                            pipeGapY = random(20, 200);
                                                                                                                score++;
                                                                                                                  }

                                                                                                                    // Draw new positions
                                                                                                                      tft.fillRect(pipeX, 0, 30, pipeGapY, ILI9341_GREEN);
                                                                                                                        tft.fillRect(pipeX, pipeGapY+80, 30, 320, ILI9341_GREEN);
                                                                                                                          tft.fillRect(50, birdY, 10, 10, ILI9341_YELLOW);

                                                                                                                            // Collision
                                                                                                                              if (birdY < 0 || birdY > 310 || (50+10 > pipeX && 50 < pipeX+30 && (birdY < pipeGapY || birdY+10 > pipeGapY+80))) {
                                                                                                                                  isGameOver = true;
                                                                                                                                      tft.setCursor(50, 150);
                                                                                                                                          tft.setTextColor(ILI9341_RED);
                                                                                                                                              tft.setTextSize(3);
                                                                                                                                                  tft.print("GAME OVER");
                                                                                                                                                    }
                                                                                                                                                    }