// Servo.h is a library that is needed to control the
// servo motors in a straightforward way.
// You should always include libraries at the start of your code.

#include <Servo.h>

// C++ is a great language for object oriented programming. You can treat
// “Servo” as a blueprint to create servo motor objects. When we say
// “Servo servos”, we are creating an object called “servos”, using the
// blueprint “Servo”. This will make sure that “servos” inherits all the
// properties that a servo motor needs. The “[5]” attached at the end simply means
// we created 5 servo motors, from #0 to #4, saved in an array.

Servo servos[5];

// This is the initial setup of the code. It attaches each servo motors we just created to
// a specific pin# on the actual hardware. Servo number 0-4 corresponds to thumb, index finger,
// middle finger, ring finger and little finger.

void setup() {
// put your setup code here, to run once:
servos[0].attach(6);
servos[1].attach(5);
servos[2].attach(4);
servos[3].attach(3);
servos[4].attach(2);

// Tell all fingers to open up when the program starts.
paper();
delay(1000);
}

// This “void paper” is a function. The name of the function is paper, and the return
// type is void, meaning it does not need to return anything. This function defines how
// to make a paper gesture.

void paper()
{
// We use servo.write to tell each servo motor we created earlier to create gestures.
// the numbers in () are default angles for eachn finger. You should only use 0-180
// which is the maximum range of the servo motors.
// To move the finger, tell the servo to move to a differennt angle. For example,
// servos[0].write(180) will move the thumb. servos[1].write(0) will move the index finger.
servos[0].write(0);
servos[1].write(180);
servos[2].write(0);
servos[3].write(0);
servos[4].write(180);
return;
}

// This function will close all the fingers and form and rock gesture.
void rock()
{
servos[0].write(180);
servos[1].write(0);
servos[2].write(180);
servos[3].write(180);
servos[4].write(0);
return;
}

void scissor()
{
// Complete this part of the code
}

void fingerWave()
{
// Complete this part of the code
}

// This void loop will loop its content indefinitely. This is the main body of the program.
// In here, you can call the above functions you just wrote.
// Make sure to add delay commands after moving a finger because the servo motor needs some
// time to move.
void loop() {
// put your main code here, to run repeatedly:

rock();
delay(2000);

paper();
delay(2000);

// Complete this part of the code. Add new gesture functions from above.
}