1extern crate sdl2;
 2
 3use sdl2::pixels::Color;
 4use sdl2::render::Canvas;
 5
 6use clap::{App, Arg};
 7
 8use chip8::Chip8;
 9
10struct SdlEmulator {
11    w: usize,
12    h: usize,
13    zoom: usize,
14    canvas: Canvas<sdl2::video::Window>,
15    chip8: Chip8,
16}
17
18impl SdlEmulator {
19    fn new(w: usize, h: usize, zoom: usize) -> SdlEmulator {
20        let mut c = Chip8::new();
21
22        let sdl_context = sdl2::init().unwrap();
23        let video_subsystem = sdl_context.video().unwrap();
24
25        let window = video_subsystem
26            .window("rust-sdl2 demo", 800, 600)
27            .position_centered()
28            .build()
29            .unwrap();
30
31        let mut canvas = window.into_canvas().build().unwrap();
32
33        SdlEmulator {
34            w,
35            h,
36            zoom,
37            canvas,
38            chip8: c,
39        }
40    }
41    fn draw_graphics(&mut self) {
42        // TODO
43    }
44    fn set_keys(&mut self) {
45        // TODO
46    }
47}
48
49fn main() {
50    let matches = App::new("chip8-rs")
51        .version("0.0.1")
52        .about("chip8 emulator")
53        .arg(
54            Arg::with_name("file")
55                .short("f")
56                .long("file")
57                .takes_value(true)
58                .help("File path of the rom to load"),
59        )
60        .get_matches();
61    let file = matches.value_of("file");
62    let file = match file {
63        Some(file) => file,
64        _ => panic!("Please specify file path of the rom to load"),
65    };
66    println!("{:?}", file);
67
68    let mut e = SdlEmulator::new(64, 32, 8);
69    loop {
70        e.chip8.emulate_cycle();
71        if e.chip8.draw_flag {
72            e.draw_graphics();
73        }
74        e.set_keys();
75        // delay
76    }
77}