int i, mode, sw_old, volume_1, volume_2, led_phase, led_select, led_dir;
unsigned long now_time, old_time, width_time;

void setup() {
  for(i=0; i<14; i++) pinMode(i, OUTPUT);
  all_LED_off();
  sw_old = 1;
  mode = 0;
}

void loop() {
  unsigned long goal_1, goal_2;
  switch_check();
  volume_1 = analogRead(1) / 3;
  volume_2 = analogRead(2);
  now_time = millis();
  switch(mode){
    case(1):
      goal_2 = map(volume_2, 0, 1023, 150, 15);
      goal_1 = goal_2 * volume_1 / 1024;
      switch(led_phase){
        case(0):
          all_LED_off();
          digitalWrite(led_select, HIGH);
          old_time = now_time;
          led_phase = 1;
          break;
        case(1):
          width_time = now_time - old_time;
          if(width_time > goal_1){
            digitalWrite(led_select, LOW);
            led_phase = 2;
          }
          break;
        case(2):
          width_time = now_time - old_time;
          if(width_time > goal_2){
            led_phase = 0;
            led_select = ++led_select % 14;
          }
          break;
      }
      break;
    case(2):
      goal_2 = map(volume_2, 0, 1023, 150, 15);
      goal_1 = goal_2 * volume_1 / 1024;
      switch(led_phase){
        case(0):
          all_LED_off();
          digitalWrite(led_select, HIGH);
          old_time = now_time;
          led_phase = 1;
          break;
        case(1):
          width_time = now_time - old_time;
          if(width_time > goal_1){
            digitalWrite(led_select, LOW);
            led_phase = 2;
          }
          break;
        case(2):
          width_time = now_time - old_time;
          if(width_time > goal_2){
            led_phase = 0;
            if(--led_select < 0) led_select = 13;
          }
          break;
      }
      break;
    case(3):
      goal_2 = map(volume_2, 0, 1023, 150, 15);
      goal_1 = goal_2 * volume_1 / 1024;
      switch(led_phase){
        case(0):
          all_LED_off();
          digitalWrite(led_select, HIGH);
          old_time = now_time;
          led_phase = 1;
          break;
        case(1):
          width_time = now_time - old_time;
          if(width_time > goal_1){
            digitalWrite(led_select, LOW);
            led_phase = 2;
          }
          break;
        case(2):
          width_time = now_time - old_time;
          if(width_time > goal_2){
            led_phase = 0;
            if(led_dir == 0) led_select = ++led_select % 14;
            else if(--led_select < 0) led_select = 13;
            if(led_select == 0) led_dir = ++led_dir % 2;
            else if(led_select == 13) led_dir = ++led_dir % 2;
          }
          break;
      }
      break;
    case(4):
      goal_2 = map(volume_2, 0, 1023, 150, 15);
      goal_1 = goal_2 * volume_1 / 1024;
      switch(led_phase){
        case(0):
          all_LED_off();
          digitalWrite(led_select, HIGH);
          old_time = now_time;
          led_phase = 1;
          break;
        case(1):
          width_time = now_time - old_time;
          if(width_time > goal_1){
            digitalWrite(led_select, LOW);
            led_phase = 2;
          }
          break;
        case(2):
          width_time = now_time - old_time;
          if(width_time > goal_2){
            led_phase = 0;
            led_select = 2 * random(0, 7) + led_dir;
            led_dir = ++led_dir % 2;
          }
          break;
      }
      break;
    case(5):
      goal_2 = map(volume_2, 0, 1023, 1000, 100);
      goal_1 = goal_2 * volume_1 / 1024;
      switch(led_phase){
        case(0):
          for(i=0; i<14; i++) digitalWrite(i, HIGH);
          old_time = now_time;
          led_phase = 1;
          break;
        case(1):
          width_time = now_time - old_time;
          if(width_time > goal_1){
            for(i=0; i<14; i++) digitalWrite(i, LOW);
            led_phase = 2;
          }
          break;
        case(2):
          width_time = now_time - old_time;
          if(width_time > goal_2) led_phase = 0;
          break;
      }
      break;
    case(0):
      all_LED_off();
      break;
  }
}

void switch_check(){
  i = analogRead(0) / 512;
  if(sw_old == i) return;
  sw_old = i; 
  if(i == 1) return;
  mode = (mode + 1) % 6;
  led_phase = 0;
  led_select = 0;
  led_dir = 0;
}

void all_LED_off(){
  for(i=0; i<14; i++) digitalWrite(i, LOW);
}