#include <FastLED.h>

#define LED_PIN     13
#define NUM_LEDS    60 // Adjust to the number of LEDs in your strip
#define BRIGHTNESS  200
#define LED_TYPE    WS2812
#define COLOR_ORDER GRB
CRGB leds[NUM_LEDS];
bool coloredPositions[NUM_LEDS]; // Array to track the positions of colored LEDs
CRGB coloredColors[NUM_LEDS]; // Array to store the random colors for colored LEDs


void setup() {
    Serial.begin(115200);

    FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
    FastLED.setBrightness(BRIGHTNESS);
    memset(coloredPositions, 0, sizeof(coloredPositions)); // Initialize all positions to false
    // Clear the strip
    fill_solid(leds, NUM_LEDS, CRGB::Black);
    // Update the LED strip
    FastLED.show();
}

void loop() {
    led();
}


void led() {
    static uint8_t offset = 0;  // Offset for the moving red pattern

    // Clear the strip
    fill_solid(leds, NUM_LEDS, CRGB::Black);

    // Set every other LED to a dimming and color-changing red with an offset
    for (int i = 0; i < NUM_LEDS; i++) {
        if ((i + offset) % 2 == 0) {
            uint8_t brightness = BRIGHTNESS * (NUM_LEDS - i) / NUM_LEDS;
            uint8_t red = 255;
            uint8_t green = 255 * i / NUM_LEDS; // Increase green to make the color yellower as it travels down
            leds[i] = CRGB(red, green, 0);
            leds[i].fadeLightBy(255 - brightness);
        }
    }

    // Move the colored LEDs down the strip with fading
    for (int i = NUM_LEDS - 1; i > 0; i--) {
        coloredPositions[i] = coloredPositions[i - 1];
        coloredColors[i] = coloredColors[i - 1];
        if (coloredPositions[i]) {
            uint8_t brightness = BRIGHTNESS * (NUM_LEDS - i) / NUM_LEDS;
            leds[i] = coloredColors[i];
            leds[i].fadeLightBy(255 - brightness);
        }
    }
    coloredPositions[0] = false; // Reset the first position

    // Frequently add a new random colored runner
    if (random(0, 4) > 2) { // Increased frequency here
        coloredPositions[0] = true;
        // Generate a random reddish color with less yellow
        uint8_t red = random(128, 256); // Red component between 128 and 255
        uint8_t green = random(0, 64); // Green component between 0 and 63 for less yellow
        coloredColors[0] = CRGB(red, green, 0);
    }

    // Show the LEDs
    FastLED.show();

    // Increment the offset to create the moving effect
    offset++;

    // Wrap around the offset
    if (offset >= 2) {
        offset = 0;
    }

    // Control the speed of the effect
    delay(10); // Adjust delay for speed control
}