Meteor

//==================================
//Version ATTiny
  #include <Adafruit_NeoPixel.h>
  #define PIN 0
  #define NUM_LEDS 110

  Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRB + NEO_KHZ800);

  void setup() {
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
  }

  void loop() {
  meteorRain(0xff,0xff,0xff,5, 60, false, 0);
  }

  void meteorRain(byte red, byte green, byte blue, byte meteorSize, byte meteorTrailDecay, boolean meteorRandomDecay, int SpeedDelay) {
  setAll(0,0,0);

  for(int i = 0; i < NUM_LEDS+NUM_LEDS; i++) {

  for(int j=0; j<NUM_LEDS; j++) {
  if( (!meteorRandomDecay) || (random(10)>5) ) {
  fadeToBlack(j, meteorTrailDecay );
  }
  }

  for(int j = 0; j < meteorSize; j++) {
  if( ( i-j <NUM_LEDS) && (i-j>=0) ) {
  setPixel(i-j, red, green, blue);
  }
  }

  showStrip();
  delay(SpeedDelay);
  }
  }

  void fadeToBlack(int ledNo, byte fadeValue) {
  #ifdef ADAFRUIT_NEOPIXEL_H
  uint32_t oldColor;
  uint8_t r, g, b;
  int value;

  oldColor = strip.getPixelColor(ledNo);
  r = (oldColor & 0x00ff0000UL) >> 16;
  g = (oldColor & 0x0000ff00UL) >> 8;
  b = (oldColor & 0x000000ffUL);

  r=(r<=10)? 0 : (int) r-(r*fadeValue/256);
  g=(g<=10)? 0 : (int) g-(g*fadeValue/256);
  b=(b<=10)? 0 : (int) b-(b*fadeValue/256);

  strip.setPixelColor(ledNo, r,g,b);
  #endif
  #ifndef ADAFRUIT_NEOPIXEL_H
  #endif
  }
  //===================================
  void showStrip() {
  #ifdef ADAFRUIT_NEOPIXEL_H
  strip.show();
  #endif
  #ifndef ADAFRUIT_NEOPIXEL_H
  #endif
  }

  void setPixel(int Pixel, byte red, byte green, byte blue) {
  #ifdef ADAFRUIT_NEOPIXEL_H
  strip.setPixelColor(Pixel, strip.Color(red, green, blue));
  #endif
  #ifndef ADAFRUIT_NEOPIXEL_H
  #endif
  }

  void setAll(byte red, byte green, byte blue) {
  for(int i = 0; i < NUM_LEDS; i++ ) {
  setPixel(i, red, green, blue);
  }
  showStrip();
  }