#include <Adafruit_NeoPixel.h>

const int DIN_PIN = 13; // D1
const int LED_COUNT =1200; // LEDの数

int i = 0;
int readpin = 15;
int sendpin = 12;
int tmp = 0;
unsigned long tm;
int count = 0;
int flag = 0;

//25飛ばしの初期
int initial = 1888;
//世界記録→9580 散歩→50000
int goal_time = 50000;
int tape_time = 0;
int plus_time = 0;
int delay_time = 0;
int excess_time = 0;

Adafruit_NeoPixel pixels(LED_COUNT, DIN_PIN, NEO_GRB + NEO_KHZ800);
void setup() {
  Serial.begin(115200);
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(sendpin, OUTPUT);
  pinMode(readpin, INPUT);
  pixels.begin();
}

// the loop function runs over and over again forever
void loop() {
  flag = digitalRead(readpin);

  if (flag == 1){
    //このtmpは統一用
    tmp = millis();
    
    //delay(1)の場合1850(1.85秒)*5で9.25秒 
    //1200/25=48(delayを1増やすと+48(+0.048)) 
  
    //目標タイムを5で割る
    tape_time = goal_time / 5;
    //追加しなければならない時間を求める
    plus_time = tape_time - initial;
    //delayでそのまま賄える分
    delay_time = plus_time / 48;
    //それのあまり(delay(1)で表現)
    excess_time = plus_time % 48;
  
    for(i=0;i<LED_COUNT;i++){
      if(i%25==0){
        pixels.setPixelColor(i, pixels.Color(128, 0, 0));
        pixels.show();
        /*
        if(i>=5){
          pixels.setPixelColor(i-5, pixels.Color(0, 0, 0));
          pixels.show();
        }
        */
        delay(1+delay_time);
  
        if(count<excess_time){
          delay(1);
          count++;
        }
      }
    }
    pixels.setPixelColor(1199, pixels.Color(128, 0, 0));
    pixels.show();
    count=0;
    
    digitalWrite(sendpin,HIGH);
    
    tm = millis();
    
    //delay(10);
    digitalWrite(sendpin,LOW);
  
    //pixels.clear();
    Serial.print(tm);
    Serial.print(",");
    Serial.println(tm - tmp);
  
    tmp = tm;
    delay(1000);
    for(i=0;i<LED_COUNT;i++){
     if(i%25==0){
       pixels.setPixelColor(i, pixels.Color(0,0,0));
     }
    }
    pixels.setPixelColor(1199, pixels.Color(0,0,0));
    pixels.show();
  }
}