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extern crate sdl2;
use sdl2::pixels::Color;
use sdl2::event::Event;
use sdl2::keyboard::Keycode;
use std::time::Duration;
use chip8::Chip;
use std::env;
pub fn main() {
//new chip struct
let args: Vec<String> = env::args().collect();
if args.len() != 2 { panic!("Incorrect format; please pass a single rom file as a parameter"); }
let mut chip = Chip::new();
chip.init();
chip.read_rom(args[1].as_str());
//SDL initalizationa and window creation
let sdl_context = sdl2::init().unwrap();
let video_subsystem = sdl_context.video().unwrap();
let window = video_subsystem.window("CHIP-8", chip8::WIDTH * chip8::SCALE, chip8::HEIGHT * chip8::SCALE)
.position_centered()
.build()
.unwrap();
//Canvas to interact with
let mut canvas = window.into_canvas().build().unwrap();
//Keyboard input handler
let mut event_pump = sdl_context.event_pump().unwrap();
//Main loop called 'running', checks for keyboard input and renders the display grid
'running: loop {
for event in event_pump.poll_iter() {
match event {
Event::Quit {..} |
Event::KeyDown { keycode: Some(Keycode::Escape), .. } => {
break 'running
},
_ => {}
}
}
// The rest of the game loop goes here...
//Draw black bg
canvas.set_draw_color(Color::RGB(0, 0, 0));
//clear the screen with black bg
canvas.clear();
//choose white color
canvas.set_draw_color(Color::RGB(255, 255, 255));
//render all the rectangles as white pixels on the canvas
chip.fetch();
chip.execute();
chip.render(&mut canvas);
//display canvas
canvas.present();
std::thread::sleep(Duration::new(0, 1_000_000_000u32 / 60));
}
}
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