# lib.rs - source
Source of the Rust file `Project\game\src\lib.rs`.

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

    //Include the Arduboy Library
    #[allow(unused_imports)]
    use arduboy_rust::prelude::*;

    #[allow(dead_code)]
    const arduboy: Arduboy2 = Arduboy2::new();

    // Progmem data

    // dynamic ram variables
    const FX_DATA_PAGE: u16 = 0xffff;
    const FX_DATA_BYTES: u32 = 234;
    const FXlogo: u32 = 0x000000;
    const FXlogoWith: i16 = 115;
    const FXlogoHeight: i16 = 16;

    static mut x: i16 = (WIDTH - FXlogoWith) / 2;
    static mut y: i16 = 25;
    static mut xDir: i8 = 1;
    static mut yDir: i8 = 1;
    // 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.set_frame_rate(30);
        FX::begin_data(FX_DATA_PAGE);
    }
    // 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:
        if !arduboy.next_frame() {
            return;
        }
        FX::draw_bitmap(x, y, FXlogo, 0, 0);
        x += xDir as i16;
        y += yDir as i16;
        if x == 0 || x == WIDTH - FXlogoWith {
            xDir = -xDir;
        }
        if y == 0 || y == HEIGHT - FXlogoHeight {
            yDir = -yDir;
        }
        FX::display_clear()
    }