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

// Pin definitions for the TFT display
#define TFT_CS     10
#define TFT_RST    9
#define TFT_DC     8
#define TFT_MOSI   11
#define TFT_CLK    13

// Pin definitions for the rotary encoder
const int clkPin = 2;
const int dtPin = 3;
const int swPin = 4;

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

int lastStateCLK;
int currentStateCLK;
bool isJumping = false;
int jumpHeight = 0;
int squareY = 120;  // Initial Y position of the square
const int groundY = 120;

void setup() {
  // Initialize the TFT display
  tft.begin();
  tft.setRotation(3);
  tft.fillScreen(ILI9341_WHITE);
  tft.drawRect(0, 0, 320, 240, ILI9341_BLACK);
  
  // Initialize rotary encoder pins
  pinMode(clkPin, INPUT);
  pinMode(dtPin, INPUT);
  pinMode(swPin, INPUT_PULLUP);

  // Read the initial state of the CLK pin
  lastStateCLK = digitalRead(clkPin);

  // Draw initial square
  drawSquare(squareY);
}

void loop() {
  // Read the current state of the CLK pin
  currentStateCLK = digitalRead(clkPin);

  // If the state has changed, then the encoder has been rotated
  if (currentStateCLK != lastStateCLK) {
    int dtState = digitalRead(dtPin);

    // If rotating clockwise, make the square jump
    if (dtState != currentStateCLK) {
      isJumping = true;
    }
  }

  // If the square is jumping, update jump height
  if (isJumping) {
    jumpHeight += 5;
    if (jumpHeight >= 50) {
      isJumping = false;
      jumpHeight = 0;
    }
  }

  // Update square Y position
  squareY = groundY - jumpHeight;

  // Clear screen and redraw
  tft.fillScreen(ILI9341_WHITE);
  drawSquare(squareY);

  // Delay to control game speed
  delay(1);

  // Update the last states
  lastStateCLK = currentStateCLK;
}

// Function to draw square
void drawSquare(int y) {
  int x = (tft.width() - 20) / 2;  // Center horizontally
  tft.fillRect(x, y, 20, 20, ILI9341_RED);
}