COD running light for Dave Windsor - FastLED

cod.ino

# video here https://www.youtube.com/watch?v=7Ir0bbCBXa8

#include <FastLED.h>

#if FASTLED_VERSION < 3001000
#error "Requires FastLED 3.1 or later; check github for latest code."
#endif

#define DATA_PIN    6
#define LED_TYPE    WS2811
#define COLOR_ORDER GRB
#define NUM_LEDS    32
#define BRIGHTNESS  96

CRGB leds[NUM_LEDS];

// an array of leds to light, in sequence order
int gRunningOrder[] = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,9,23,24,25,26,27,28,29,30,31,11,32,21};

// determine how many leds to light
int gNumLeds = sizeof(gRunningOrder)/sizeof(int);

void setup() {
 delay(3000); // 3 second delay for recovery
  
  // tell FastLED about the LED strip configuration
  FastLED.addLeds<LED_TYPE,DATA_PIN,COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
  FastLED.setBrightness(BRIGHTNESS);
  FastLED.clear();
  FastLED.show();
}

void loop()
{
    // Move a single dot along a strip

    for(uint8_t ledNumber = 0; ledNumber < gNumLeds; ledNumber++)
    {
        // Turn our current led ON, then show the leds
        leds[gRunningOrder[ledNumber]] = CRGB::Red;
 
        // Show the leds (only one of which is has a color set, from above
        // Show turns actually turns on the LEDs
        FastLED.show();
 
        // Wait a little bit - this will dictate speed
        delay(30);
 
        // this will leave a tail
        fadeToBlackBy( leds, NUM_LEDS, 64);
        
        //or un comment this to turn the leds off quickly, not leaving tail
        //leds[gRunningOrder[ledNumber]] = CRGB::Black;
    }
}