#include <Adafruit_GFX.h>
#include <Adafruit_NeoMatrix.h>
#include <Adafruit_NeoPixel.h>

#define PIN 3   // Data pin connected to RGB matrix

Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(
  32, 8, PIN,
  NEO_MATRIX_TOP + NEO_MATRIX_LEFT +
  NEO_MATRIX_ROWS + NEO_MATRIX_PROGRESSIVE,
  NEO_GRB + NEO_KHZ800
);

void setup() {
  matrix.begin();
  matrix.setBrightness(40);
}

void loop() {
  animation1(); delay(2000);
  animation2(); delay(2000);
  animation3(); delay(2000);
  animation4(); delay(2000);
  animation5(); delay(2000);
}

// --- Animation 1: Rainbow fill ---
void animation1() {
  for (int x = 0; x < 32; x++) {
    for (int y = 0; y < 8; y++) {
      uint16_t color = matrix.Color((x*8)%255, (y*32)%255, ((x+y)*16)%255);
      matrix.drawPixel(x, y, color);
    }
  }
  matrix.show();
}

// --- Animation 2: Moving vertical bar ---
void animation2() {
  for (int pos = 0; pos < 32; pos++) {
    matrix.fillScreen(0);
    for (int y = 0; y < 8; y++) {
      matrix.drawPixel(pos, y, matrix.Color(255, 0, 0));
    }
    matrix.show();
    delay(50);
  }
}

// --- Animation 3: Checkerboard flash ---
void animation3() {
  for (int t = 0; t < 6; t++) {
    matrix.fillScreen(0);
    for (int x = 0; x < 32; x++) {
      for (int y = 0; y < 8; y++) {
        if ((x+y+t) % 2 == 0) {
          matrix.drawPixel(x, y, matrix.Color(0, 255, 0));
        }
      }
    }
    matrix.show();
    delay(300);
  }
}

// --- Animation 4: Horizontal wave ---
void animation4() {
  for (int phase = 0; phase < 32; phase++) {
    matrix.fillScreen(0);
    for (int x = 0; x < 32; x++) {
      int y = (sin((x+phase) * 0.3) * 3.5) + 4; // wave pattern
      matrix.drawPixel(x, y, matrix.Color(0, 0, 255));
    }
    matrix.show();
    delay(80);
  }
}

// --- Animation 5: Expanding box ---
void animation5() {
  for (int size = 1; size <= 8; size++) {
    matrix.fillScreen(0);
    matrix.drawRect((32-size*4)/2, (8-size)/2, size*4, size, matrix.Color(255, 255, 0));
    matrix.show();
    delay(200);
  }
}