//// Add names to pins
const int PotPin = A0;
const int PunchButton = 2;

//// Add variables
long Val = 0;
float SpeedOfPunch = 0;
unsigned long Timer = 0;
int TimesPunched = 0;
float AVGPunchingSpeed = 0;
float AVGPunchingPower = 0;
float PowerOfPunch = 0;

//// Make the punch button work
boolean ButtonState = LOW;
boolean DebouncePunchButton(boolean State)
{
  boolean NewState = digitalRead(PunchButton);
  if (State != NewState)
  {
    delay(10);
    NewState = digitalRead(PunchButton);
  }
  return NewState;
}

void setup() 
{
  Serial.begin(9600);
  pinMode(PunchButton, INPUT);
  delay(500);
}

void loop() 
{
  if (TimesPunched == 0)
  {
    if(DebouncePunchButton(ButtonState) == HIGH && ButtonState == LOW)       // the first punch will start the timer
    { 
      TimesPunched++; // add 1 punch 
      Val = analogRead(PotPin);                                                                                       
      SpeedOfPunch = map(Val, 0, 1023, 5, 10) + SpeedOfPunch;                // boxers generaly punch between 5 and 10 m/s 
      PowerOfPunch = map(Val, 0, 1023, 440, 1100) + PowerOfPunch;            // olympic boxers punch between 440 an 1100 pounds
      ButtonState = HIGH;
      Timer = millis();
    }

    else if (DebouncePunchButton(ButtonState) == LOW && ButtonState == HIGH) 
    {
      ButtonState = LOW;
    }
  }
  
  else if (TimesPunched >= 1)
  {
    if(DebouncePunchButton(ButtonState) == HIGH && ButtonState == LOW)       // when the button is pushed
    { 
      TimesPunched++; // add 1 punch 
      Val = analogRead(PotPin);                                                                                       
      SpeedOfPunch = map(Val, 0, 1023, 5, 10) + SpeedOfPunch;                // boxers generaly punch between 5 and 10 m/s 
      PowerOfPunch = map(Val, 0, 1023, 440, 1100) + PowerOfPunch;            // olympic boxers punch between 440 an 1100 pounds
      ButtonState = HIGH;
    }

    else if (DebouncePunchButton(ButtonState) == LOW && ButtonState == HIGH)
    {
      ButtonState = LOW;
    }
    
    else if ((millis() - Timer) >= 20000)                                    // check if 20 seconds has past to simulate the training is done and print the information
    {
      AVGPunchingSpeed = SpeedOfPunch/TimesPunched;
      AVGPunchingPower = PowerOfPunch/TimesPunched;
      Serial.print(TimesPunched);
      Serial.print("|");
      Serial.print(AVGPunchingSpeed, 2);
      Serial.print("|");
      Serial.print(AVGPunchingPower, 2);
      Serial.println();
      TimesPunched = 0;
      SpeedOfPunch = 0;
      AVGPunchingPower = 0;
      //delay(5000);
    }
  }
}