// https://forum.arduino.cc/t/newbie-need-help-with-robot/1279686

#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <FastLED.h>
#include "kmBitmap.h"

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define SCREEN_MIDDLE SCREEN_HEIGHT/2
#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

#define BITMAP_WIDTH 64
#define BITMAP_HEIGHT 64

#define DATA_PIN 6 // Neopixels
#define NUM_PIX 18
#define BRIGHTNESS 255
CRGB led[NUM_PIX];

void setup() {
  Serial.begin(115200);
  FastLED.addLeds<WS2812, DATA_PIN, GRB>(led, NUM_PIX);
  FastLED.setBrightness(BRIGHTNESS);

  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {  // 0x3c = 128x64?
    Serial.println(F("SSD1306 allocation failed"));
    while (1);
  }
  drawBitmap();
}

void loop() { 
  // allpix();
  marquee();
  // ringpix();
}

void drawBitmap() {
  int x = 32, y = 0;
  oled.clearDisplay();
  oled.drawBitmap(x, y, kmBitmap, BITMAP_WIDTH, BITMAP_HEIGHT, WHITE);
  oled.display();
}

void marquee() {
  for (int i = 0; i < NUM_PIX; i++) {
    if (i % 2)
      led[i] = CRGB(255, 255, 255);
    else
      led[i] = CRGB(  0,   0,   0);
  }
  FastLED.show();
  delay(500);
  for (int i = 0; i < NUM_PIX; i++) {
    if (i % 2)
      led[i] = CRGB(  0,   0,   0);
    else
      led[i] = CRGB(255, 255, 255);
  }
  FastLED.show();
  delay(500);
}

void allpix() {
  for (int i = 0; i < NUM_PIX; i++) {
    led[i] = CRGB(random(2) * 255, random(2) * 255, random(2) * 255); // primary colors
  }
  FastLED.show();
  delay(250);
}

void ringpix() {
  for (int i = 0; i < NUM_PIX; i++) {
    led[i] = CRGB(random(2) * 255, random(2) * 255, random(2) * 255); // primary colors
    FastLED.show();
    delay(50);
  }
}