79 lines
2.2 KiB
Rust
79 lines
2.2 KiB
Rust
use anyhow::{anyhow, Result};
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use gb::cpu::Cpu as LR35902;
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use pixels::{Pixels, SurfaceTexture};
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use std::env::args;
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use winit::{
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dpi::LogicalSize,
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event::{Event, VirtualKeyCode},
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event_loop::{ControlFlow, EventLoop},
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window::Window,
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window::WindowBuilder,
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};
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use winit_input_helper::WinitInputHelper;
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// 160 x 144
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const GB_WIDTH: u32 = 160;
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const GB_HEIGHT: u32 = 144;
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fn main() -> Result<()> {
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let event_loop = EventLoop::new();
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let mut input = WinitInputHelper::new();
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let window = create_window(&event_loop)?;
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let mut pixels = create_pixels(&window)?;
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let mut game_boy = match args().nth(1) {
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Some(boot_path) => LR35902::boot_new(&boot_path),
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None => LR35902::new(),
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};
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game_boy.load_cartridge("bin/cpu_instrs.gb");
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event_loop.run(move |event, _, control_flow| {
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if let Event::RedrawRequested(_) = event {
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let ppu = game_boy.get_ppu();
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let frame = pixels.get_frame();
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ppu.draw(frame);
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if pixels
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.render()
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.map_err(|e| anyhow!("pixels.render() failed: {}", e))
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.is_err()
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{
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*control_flow = ControlFlow::Exit;
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return;
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}
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}
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if input.update(&event) {
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if input.key_pressed(VirtualKeyCode::Escape) || input.quit() {
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*control_flow = ControlFlow::Exit;
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return;
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}
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if let Some(size) = input.window_resized() {
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pixels.resize(size.width, size.height);
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}
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// Emulation
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let _cycles = game_boy.step();
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// window.request_redraw();
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}
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});
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}
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pub fn create_window(event_loop: &EventLoop<()>) -> Result<Window> {
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let size = LogicalSize::new(GB_WIDTH as f64, GB_HEIGHT as f64);
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Ok(WindowBuilder::new()
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.with_title("DMG-1 Game Boy")
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.with_inner_size(size)
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.with_min_inner_size(size)
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.build(&event_loop)?)
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}
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pub fn create_pixels(window: &Window) -> Result<Pixels<Window>> {
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let window_size = window.inner_size();
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let surface_texture = SurfaceTexture::new(window_size.width, window_size.height, window);
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Ok(Pixels::new(GB_WIDTH, GB_HEIGHT, surface_texture)?)
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}
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