diff --git a/src/machine.rs b/src/machine.rs index ab5608c..56e8ef7 100644 --- a/src/machine.rs +++ b/src/machine.rs @@ -41,13 +41,9 @@ pub const WIDTH: usize = 64; extern crate sdl2; extern crate rand; -pub use sdl2::pixels::Color; pub use sdl2::event::Event; pub use sdl2::EventPump; pub use sdl2::keyboard::Keycode; -pub use sdl2::video::Window; -pub use sdl2::rect::Point; -pub use sdl2::render::Canvas; pub use std::fs::File; pub use std::path::Path; @@ -91,9 +87,10 @@ impl Machine { } /// charge une ROM en mémoire - pub fn load_rom(&mut self, p: &Path) -> io::Result<()> { - let mut buffer = Vec::new(); + //pub fn load_rom(&mut self, p: &Path) -> Result { + pub fn load_rom(&mut self, p: &Path) -> Result<(), io::Error> { let mut f = File::open(p)?; + let mut buffer = Vec::new(); f.read_to_end(&mut buffer)?; for i in 0..buffer.len() { @@ -101,9 +98,10 @@ impl Machine { } Ok(()) + //Ok(String::from(p.to_str().unwrap())) } - pub fn cycle(&mut self, screen: &mut Canvas, events: &mut EventPump) { + pub fn cycle(&mut self, events: &mut EventPump) { let opcode = ((self.memory[self.pc] as u16) << 8) + (self.memory[self.pc + 1] as u16); @@ -126,12 +124,7 @@ impl Machine { match (opcode & 0xf000) >> 12 { 0 => match opcode { - 0x00E0 => { - self.display_buffer = [[0; 64]; 32]; - screen.set_draw_color(Color::RGB(0, 0, 0)); - screen.clear(); - screen.present(); - }, + 0x00E0 => self.display_buffer = [[0; 64]; 32], 0x00EE => self.pc = self.stack.pop().unwrap() as usize, _ => println!("SYS"), } @@ -140,10 +133,10 @@ impl Machine { self.stack.push(self.pc as u16); self.pc = (opcode & 0x0fff) as usize }, - 3 => if self.gpio[vx] == k as u8 { + 3 => if self.gpio[vx] == k { self.pc += 2; }, - 4 => if self.gpio[vx] != k as u8 { + 4 => if self.gpio[vx] != k { self.pc += 2; }, 5 => if self.gpio[vx] == self.gpio[vy] { @@ -158,45 +151,37 @@ impl Machine { 2 => self.gpio[vx] &= self.gpio[vy], 3 => self.gpio[vx] ^= self.gpio[vy], 4 => { + /* + let tx = self.gpio[vx] as u16; + let ty = self.gpio[vy] as u16; + let result = tx + ty; + self.gpio[vx] = result; + self + */ self.gpio[vx] = self.gpio[vx].saturating_add(self.gpio[vy]); let (_, overflow) = self.gpio[vx].overflowing_add(self.gpio[vy]); - if overflow { - self.gpio[0xf] = 1; - } + self.gpio[0x0f] = if overflow { 1 } else { 0 }; }, 5 => { - if self.gpio[vx] > self.gpio[vy] { - self.gpio[0xf] = 1; - } else { - self.gpio[0xf] = 0; - } + self.gpio[0x0f] = if self.gpio[vx] > self.gpio[vy] { 1 } else { 0 }; - let (t, _) = self.gpio[vx].overflowing_sub(self.gpio[vy]); - self.gpio[vx] = t; + //let (t, _) = self.gpio[vx].overflowing_sub(self.gpio[vy]); + //self.gpio[vx] = t; + self.gpio[vx] = self.gpio[vx].wrapping_sub(self.gpio[vy]); }, 6 => { - if self.gpio[vx].trailing_ones() > 0 { - self.gpio[0xf] = 1; - } else { - self.gpio[0xf] = 0; - } - + self.gpio[0x0f] = self.gpio[vx] & 0x01; self.gpio[vx] >>= 1; }, 7 => { - if self.gpio[vx] < self.gpio[vy] { - self.gpio[0xf] = 1; - } else { - self.gpio[0xf] = 0; - } - - self.gpio[vx] = self.gpio[vy] - self.gpio[vx]; + self.gpio[0x0f] = if self.gpio[vx] < self.gpio[vy] { 1 } else { 0 }; + self.gpio[vx] = self.gpio[vy].wrapping_sub(self.gpio[vx]); }, 0xE => { if self.gpio[vx].leading_ones() > 0 { - self.gpio[0xf] = 1; + self.gpio[0x0f] = 1; } else { - self.gpio[0xf] = 0; + self.gpio[0x0f] = 0; } self.gpio[vx] <<= 1; diff --git a/src/main.rs b/src/main.rs index 4f61cc6..67308cc 100644 --- a/src/main.rs +++ b/src/main.rs @@ -28,10 +28,8 @@ use machine::HEIGHT; use machine::WIDTH; use machine::Machine; -use std::fs::File; use std::path::Path; use std::io; -use std::io::Read; use std::env; fn main() { @@ -40,11 +38,18 @@ fn main() { //return; let mut t: Machine = Machine::new(); t.init(); - t.load_rom(Path::new(name_file)); + match t.load_rom(Path::new(name_file)) { + Ok(()) => println!("La ROM a correctement été chargée."), + Err(e) => match e.kind() { + std::io::ErrorKind::NotFound => panic!("Le fichier n'a pas été trouvé."), + _ => panic!("Erreur inconnue : {}", e), + } + } let sdl_context = sdl2::init().unwrap(); let video_subsystem = sdl_context.video().unwrap(); let window = video_subsystem.window("Chip8 Emulator", WIDTH as u32, HEIGHT as u32) + //let window = video_subsystem.window("Chip8 Emulator", 100 + 10 * WIDTH as u32, 10 * HEIGHT as u32) .position_centered() .build() .unwrap(); @@ -57,13 +62,15 @@ fn main() { let mut event_pump = sdl_context.event_pump().unwrap(); 'running: loop { - t.cycle(&mut canvas, &mut event_pump); + t.cycle(&mut event_pump); - canvas.set_draw_color(Color::RGB(255, 255, 255)); - for i in 0..t.display_buffer.len() { for j in 0..t.display_buffer[i].len() { if t.display_buffer[i][j] == 1 { + canvas.set_draw_color(Color::RGB(255, 255, 255)); + canvas.draw_point(Point::new(j as i32, i as i32)).unwrap(); + } else { + canvas.set_draw_color(Color::RGB(0, 0, 0)); canvas.draw_point(Point::new(j as i32, i as i32)).unwrap(); } } @@ -178,6 +185,8 @@ fn main() { } } +use std::fs::File; +use std::io::Read; #[allow(dead_code, unused_variables)] fn read_file(p: &Path) -> io::Result<()> { let mut buffer = Vec::new();