#include <TFT_eSPI.h>
#include <SPI.h>

// Create TFT instance
TFT_eSPI tft = TFT_eSPI();

#define TFT_MISO 5
#define TFT_MOSI 4
#define TFT_SCLK 3
#define TFT_CS   10
#define TFT_DC   6
#define TFT_RST  7


#define SCREEN_WIDTH  240
#define SCREEN_HEIGHT 320

void setup() {
  tft.init();
  tft.setRotation(1);   // Landscape orientation, text upright
  tft.fillScreen(TFT_BLACK);

  // Splash screen
  tft.setTextColor(TFT_YELLOW, TFT_BLACK);
  tft.setTextDatum(MC_DATUM);
  tft.drawString("ESP32 + ILI9341 Demo", SCREEN_WIDTH/2, SCREEN_HEIGHT/2);
  delay(2000);
}

void loop() {
  // Scene 1: Color bars
  for (int i = 0; i < SCREEN_HEIGHT; i++) {
    uint16_t color = tft.color565(i % 32 * 8, i % 64 * 4, i % 32 * 8);
    tft.drawFastHLine(0, i, SCREEN_WIDTH, color);
  }
  delay(2000);

  // Scene 2: Rainbow gradient
  for (int x = 0; x < SCREEN_WIDTH; x++) {
    uint16_t color = tft.color565(x % 64 * 4, 128, 255 - (x % 64 * 4));
    tft.drawFastVLine(x, 0, SCREEN_HEIGHT, color);
  }
  delay(2000);

  // Scene 3: Shapes gallery
  tft.fillScreen(TFT_BLACK);
  tft.fillCircle(60, 60, 40, TFT_RED);
  tft.fillRect(120, 40, 80, 60, TFT_BLUE);
  tft.drawTriangle(40, 200, 120, 200, 80, 120, TFT_GREEN);
  delay(2000);

  // Scene 4: Line burst
  tft.fillScreen(TFT_BLACK);
  for (int i = 0; i < 360; i += 10) {
    int x = SCREEN_WIDTH/2 + cos(i * DEG_TO_RAD) * 100;
    int y = SCREEN_HEIGHT/2 + sin(i * DEG_TO_RAD) * 100;
    tft.drawLine(SCREEN_WIDTH/2, SCREEN_HEIGHT/2, x, y, TFT_WHITE);
  }
  delay(2000);

  // Scene 5: Concentric circles
  tft.fillScreen(TFT_BLACK);
  for (int r = 20; r < 120; r += 20) {
    tft.drawCircle(SCREEN_WIDTH/2, SCREEN_HEIGHT/2, r, tft.color565(r*2, 255-r, r));
  }
  delay(2000);

  // Scene 6: Text showcase
  tft.fillScreen(TFT_BLACK);
  tft.setTextColor(TFT_WHITE, TFT_BLACK);
  tft.drawString("Hello ILI9341!", 10, 10, 4);
  tft.drawString("AI Centre Nandurbar", 10, 60, 2);
  delay(2000);

  // Scene 7: Bouncing ball
  for (int y = 40; y < SCREEN_HEIGHT-40; y+=5) {
    tft.fillScreen(TFT_BLACK);
    tft.fillCircle(SCREEN_WIDTH/2, y, 20, TFT_CYAN);
    delay(50);
  }
  delay(1000);

  // Scene 8: Star field
  tft.fillScreen(TFT_BLACK);
  for (int i = 0; i < 100; i++) {
    int x = random(SCREEN_WIDTH);
    int y = random(SCREEN_HEIGHT);
    tft.drawPixel(x, y, TFT_WHITE);
  }
  delay(2000);

  // Scene 9: Spectrum analyzer
  tft.fillScreen(TFT_BLACK);
  for (int x = 0; x < SCREEN_WIDTH; x+=10) {
    int h = random(20, 100);
    tft.fillRect(x, SCREEN_HEIGHT-h, 8, h, TFT_GREEN);
  }
  delay(2000);

  // Scene 10: Plasma effect
  tft.fillScreen(TFT_BLACK);
  for (int y = 0; y < SCREEN_HEIGHT; y+=4) {
    for (int x = 0; x < SCREEN_WIDTH; x+=4) {
      uint16_t color = tft.color565((x*y)%255, (x+y)%255, (x*y)%128);
      tft.fillRect(x, y, 4, 4, color);
    }
  }
  delay(2000);

  // Scene 11: Mandelbrot fractal
  tft.fillScreen(TFT_BLACK);
  for (int y = 0; y < SCREEN_HEIGHT; y+=2) {
    for (int x = 0; x < SCREEN_WIDTH; x+=2) {
      float cx = (x - SCREEN_WIDTH/2.0) / 80.0;
      float cy = (y - SCREEN_HEIGHT/2.0) / 80.0;
      float zx = 0, zy = 0;
      int iter = 0;
      while (zx*zx + zy*zy < 4 && iter < 32) {
        float tmp = zx*zx - zy*zy + cx;
        zy = 2*zx*zy + cy;
        zx = tmp;
        iter++;
      }
      tft.drawPixel(x, y, tft.color565(iter*8, iter*4, iter*2));
    }
  }
  delay(2000);

  // Scene 12: Splash screen
  tft.fillScreen(TFT_BLACK);
  tft.setTextColor(TFT_YELLOW, TFT_BLACK);
  tft.setTextDatum(MC_DATUM);
  tft.drawString("Demo Complete!", SCREEN_WIDTH/2, SCREEN_HEIGHT/2);
  delay(3000);
}