# lib.rs - source
Source of the Rust file `Examples\Arduboy-Tutorials\demo5\src\lib.rs`.

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    #![no_std]
    #![allow(non_upper_case_globals)]

    //Include the Arduboy Library
    //Initialize the arduboy object
    use arduboy_rust::prelude::*;
    const arduboy: Arduboy2 = Arduboy2::new();

    //Initialize variables used in this game
    static mut playerwin: c_int = 0;
    static mut attempts: c_int = 0;
    static mut guessednumber: c_int = 0;
    static mut randomnumber: c_int = 0;
    static mut lastguess: c_int = 0;

    //The setup() function runs once when you turn your Arduboy on
    #[no_mangle]
    pub unsafe extern "C" fn setup() {
        // put your setup code here, to run once:
        arduboy.begin();
        arduboy.clear();
        arduboy.init_random_seed();
        randomnumber = random_between(1, 101) as i16;
    }
    //The loop() function repeats forever after setup() is done
    #[no_mangle]
    #[export_name = "loop"]
    pub unsafe extern "C" fn loop_() {
        // put your main code here, to run repeatedly:
        arduboy.clear();
        arduboy.poll_buttons();
        if playerwin == 0 {
            //Ask the player for a number and play the game
            if attempts == 7 {
                //Game Over screen
                arduboy.set_cursor(0, 0);
                arduboy.print(f!(b"You lost!\0"));
                arduboy.print(f!(b"\n\0"));
                arduboy.print(f!(b"Correct Number: \0"));
                arduboy.print(randomnumber);
                if A.just_pressed() {
                    randomnumber = random_between(1, 101) as i16;
                    attempts = 0;
                    playerwin = 0;
                }
            } else {
                //Player has more attempts
                if UP.just_pressed() {
                    guessednumber += 1;
                }
                if DOWN.just_pressed() {
                    guessednumber -= 1;
                }
                if A.just_pressed() {
                    if guessednumber == randomnumber {
                        playerwin += 1;
                    } else {
                        attempts += 1;
                        lastguess = guessednumber
                    }
                }
                arduboy.set_cursor(0, 0);
                arduboy.print(f!(b"Attempt: \0"));
                arduboy.print(attempts);
                arduboy.print(f!(b"\n\0"));
                arduboy.print(f!(b"Number to guess: \0"));
                arduboy.print(guessednumber);
                arduboy.print(f!(b"\n\0"));
                if attempts == 0 {
                    arduboy.print(f!(b"Good luck!\0"));
                } else {
                    arduboy.print(lastguess);
                    if lastguess > randomnumber {
                        arduboy.print(f!(b" is too high!\0"));
                    }
                    if lastguess < randomnumber {
                        arduboy.print(f!(b" is too low!\0"));
                    }
                }
            }
        } else {
            //Tell the player that they won!
            arduboy.set_cursor(0, 0);
            arduboy.print(f!(b"You won!\0"));
            arduboy.print(f!(b"\n\0"));
            arduboy.print(f!(b"Correct Number: \0"));
            arduboy.print(randomnumber);

            if A.just_pressed() {
                randomnumber = random_between(1, 101) as c_int;
                attempts = 0;
                playerwin = 0;
            }
        }
        arduboy.display();
    }