//---------LIBRARIES
#include <Servo.h>

//---------CONSTANTS(won't change)

const int servoPin = 9;
const int buttonPin = 8;

const int servoMinDegrees = 10;
const int servoMaxDegrees = 170;

//---------VARIABLES(will change)
Servo myservo;
int val = 5;
int servoPosition = 90;
int servoSlowInterval = 80;
int servoFastInterval = 10;
int servoInterval = servoSlowInterval;
int servoDegrees = 25;

unsigned long currentMillis = 0;
unsigned long previousServoMillis = 0;

//==============
void setup() {
Serial.begin(9600);
Serial.println("Hinata is bae");

pinMode(buttonPin, INPUT_PULLUP);

myservo.write(servoPosition);
myservo.attach(servoPin);
}
//==============

void loop() {
  currentMillis = millis();
  servoSweep();
}

//==============

void servoSweep() {
 if (digitalRead(buttonPin) == HIGH){
   val = val + 1;
  }

  if (val > 1){
    val = 0;
  }

  if (val < 1){
  if (currentMillis - previousServoMillis >= servoInterval){
    previousServoMillis += servoInterval;

    servoPosition = servoPosition + servoDegrees;

    if(servoPosition <= servoMinDegrees){
      if(servoInterval == servoSlowInterval){
        servoInterval = servoFastInterval;
    }}
      else {
        servoInterval = servoSlowInterval;
      }
    if((servoPosition >= servoMaxDegrees)||(servoPosition <=servoMinDegrees)) {
      servoDegrees = - servoDegrees;
      servoPosition = servoPosition + servoDegrees;
   }
   myservo.write(servoPosition);
}
}
}