330 lines
11 KiB
Rust
330 lines
11 KiB
Rust
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use std::thread;
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use std::str::FromStr;
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use std::sync::{Arc, Mutex};
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use std::time::{Duration, Instant};
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use minifb::{self, Key, MouseMode, MouseButton};
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use clap::{App, Arg, ArgMatches};
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use moa_core::{System, Error};
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use moa_core::host::{Host, ControllerUpdater, KeyboardUpdater, KeyEvent, MouseUpdater, MouseState, WindowUpdater, Audio, ControllerDevice};
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use moa_core::host::gfx::Frame;
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use moa_common::{AudioMixer, AudioSource};
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use moa_common::CpalAudioOutput;
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mod keys;
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mod controllers;
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use crate::keys::map_key;
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use crate::controllers::map_controller_a;
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const WIDTH: u32 = 320;
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const HEIGHT: u32 = 224;
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pub fn new(name: &str) -> App {
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App::new(name)
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.arg(Arg::new("scale")
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.short('s')
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.long("scale")
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.takes_value(true)
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.help("Scale the screen"))
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.arg(Arg::new("threaded")
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.short('t')
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.long("threaded")
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.help("Run the simulation in a separate thread"))
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.arg(Arg::new("speed")
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.short('x')
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.long("speed")
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.takes_value(true)
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.help("Adjust the speed of the simulation"))
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.arg(Arg::new("debugger")
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.short('d')
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.long("debugger")
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.help("Start the debugger before running machine"))
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.arg(Arg::new("disable-audio")
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.short('a')
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.long("disable-audio")
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.help("Disable audio output"))
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}
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pub fn run<I>(matches: ArgMatches, init: I) where I: FnOnce(&mut MiniFrontendBuilder) -> Result<System, Error> + Send + 'static {
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if matches.occurrences_of("threaded") > 0 {
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run_threaded(matches, init);
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} else {
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run_inline(matches, init);
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}
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}
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pub fn run_inline<I>(matches: ArgMatches, init: I) where I: FnOnce(&mut MiniFrontendBuilder) -> Result<System, Error> {
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let mut frontend = MiniFrontendBuilder::default();
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let system = init(&mut frontend).unwrap();
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frontend
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.build()
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.start(matches, Some(system));
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}
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pub fn run_threaded<I>(matches: ArgMatches, init: I) where I: FnOnce(&mut MiniFrontendBuilder) -> Result<System, Error> + Send + 'static {
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let frontend = Arc::new(Mutex::new(MiniFrontendBuilder::default()));
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{
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let frontend = frontend.clone();
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thread::spawn(move || {
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let mut system = init(&mut frontend.lock().unwrap()).unwrap();
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frontend.lock().unwrap().finalize();
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system.run_loop();
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});
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}
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wait_until_initialized(frontend.clone());
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frontend
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.lock().unwrap()
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.build()
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.start(matches, None);
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}
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fn wait_until_initialized(frontend: Arc<Mutex<MiniFrontendBuilder>>) {
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while !frontend.lock().unwrap().finalized {
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thread::sleep(Duration::from_millis(10));
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}
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}
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pub struct MiniFrontendBuilder {
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pub window: Option<Box<dyn WindowUpdater>>,
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pub controller: Option<Box<dyn ControllerUpdater>>,
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pub keyboard: Option<Box<dyn KeyboardUpdater>>,
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pub mouse: Option<Box<dyn MouseUpdater>>,
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pub mixer: Option<Arc<Mutex<AudioMixer>>>,
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pub finalized: bool,
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}
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impl Default for MiniFrontendBuilder {
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fn default() -> Self {
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Self {
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window: None,
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controller: None,
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keyboard: None,
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mouse: None,
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mixer: Some(AudioMixer::with_default_rate()),
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finalized: false,
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}
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}
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}
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impl MiniFrontendBuilder {
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pub fn finalize(&mut self) {
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self.finalized = true;
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}
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pub fn build(&mut self) -> MiniFrontend {
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let window = std::mem::take(&mut self.window);
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let controller = std::mem::take(&mut self.controller);
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let keyboard = std::mem::take(&mut self.keyboard);
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let mouse = std::mem::take(&mut self.mouse);
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let mixer = std::mem::take(&mut self.mixer);
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MiniFrontend::new(window, controller, keyboard, mouse, mixer.unwrap())
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}
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}
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impl Host for MiniFrontendBuilder {
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fn add_window(&mut self, updater: Box<dyn WindowUpdater>) -> Result<(), Error> {
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if self.window.is_some() {
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return Err(Error::new("A window updater has already been registered with the frontend"));
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}
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self.window = Some(updater);
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Ok(())
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}
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fn register_controller(&mut self, device: ControllerDevice, input: Box<dyn ControllerUpdater>) -> Result<(), Error> {
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if device != ControllerDevice::A {
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return Ok(())
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}
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if self.controller.is_some() {
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return Err(Error::new("A controller updater has already been registered with the frontend"));
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}
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self.controller = Some(input);
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Ok(())
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}
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fn register_keyboard(&mut self, input: Box<dyn KeyboardUpdater>) -> Result<(), Error> {
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if self.keyboard.is_some() {
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return Err(Error::new("A keyboard updater has already been registered with the frontend"));
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}
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self.keyboard = Some(input);
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Ok(())
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}
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fn register_mouse(&mut self, input: Box<dyn MouseUpdater>) -> Result<(), Error> {
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if self.mouse.is_some() {
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return Err(Error::new("A mouse updater has already been registered with the frontend"));
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}
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self.mouse = Some(input);
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Ok(())
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}
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fn create_audio_source(&mut self) -> Result<Box<dyn Audio>, Error> {
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let source = AudioSource::new(self.mixer.as_ref().unwrap().clone());
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Ok(Box::new(source))
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}
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}
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pub struct MiniFrontend {
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pub modifiers: u16,
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pub mouse_state: MouseState,
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pub window: Option<Box<dyn WindowUpdater>>,
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pub controller: Option<Box<dyn ControllerUpdater>>,
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pub keyboard: Option<Box<dyn KeyboardUpdater>>,
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pub mouse: Option<Box<dyn MouseUpdater>>,
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pub audio: Option<CpalAudioOutput>,
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pub mixer: Arc<Mutex<AudioMixer>>,
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}
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impl MiniFrontend {
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pub fn new(
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window: Option<Box<dyn WindowUpdater>>,
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controller: Option<Box<dyn ControllerUpdater>>,
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keyboard: Option<Box<dyn KeyboardUpdater>>,
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mouse: Option<Box<dyn MouseUpdater>>,
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mixer: Arc<Mutex<AudioMixer>>,
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) -> Self {
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Self {
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modifiers: 0,
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mouse_state: Default::default(),
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window,
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controller,
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keyboard,
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mouse,
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audio: None,
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mixer,
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}
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}
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pub fn start(&mut self, matches: ArgMatches, mut system: Option<System>) {
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simple_logger::SimpleLogger::new()
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.with_level(log::Level::Warn.to_level_filter())
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.without_timestamps()
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.init().unwrap();
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if matches.occurrences_of("debugger") > 0 {
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if let Some(system) = system.as_mut() {
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system.enable_debugging();
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}
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}
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if matches.occurrences_of("disable-audio") == 0 {
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self.audio = Some(CpalAudioOutput::create_audio_output(self.mixer.lock().unwrap().get_sink()));
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}
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let options = minifb::WindowOptions {
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scale: match matches.value_of("scale").map(|s| s.parse::<u8>().unwrap()) {
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Some(1) => minifb::Scale::X1,
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Some(2) => minifb::Scale::X2,
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Some(4) => minifb::Scale::X4,
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Some(8) => minifb::Scale::X8,
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_ => minifb::Scale::X2,
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},
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..Default::default()
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};
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let speed = match matches.value_of("speed") {
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Some(x) => f32::from_str(x).unwrap(),
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None => 1.0,
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};
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let mut size = (WIDTH, HEIGHT);
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if let Some(updater) = self.window.as_mut() {
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size = updater.max_size();
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}
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let mut window = minifb::Window::new(
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"Test - ESC to exit",
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size.0 as usize,
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size.1 as usize,
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options,
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)
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.unwrap_or_else(|e| {
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panic!("{}", e);
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});
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// Limit to max ~60 fps update rate
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window.limit_update_rate(Some(Duration::from_micros(16600)));
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let mut update_timer = Instant::now();
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let mut last_frame = Frame::new(size.0, size.1);
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while window.is_open() && !window.is_key_down(Key::Escape) {
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let frame_time = update_timer.elapsed();
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update_timer = Instant::now();
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//println!("new frame after {:?}us", frame_time.as_micros());
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//let run_timer = Instant::now();
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if let Some(system) = system.as_mut() {
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//system.run_for(nanoseconds_per_frame).unwrap();
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system.run_for((frame_time.as_nanos() as f32 * speed) as u64).unwrap();
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//system.run_until_break().unwrap();
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}
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//let sim_time = run_timer.elapsed().as_micros();
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//println!("ran simulation for {:?}us in {:?}us (avg: {:?}us)", frame_time.as_micros(), sim_time, frame_time.as_micros() as f64 / sim_time as f64);
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if let Some(keys) = window.get_keys_pressed(minifb::KeyRepeat::No) {
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for key in keys {
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self.check_key(key, true);
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// Process special keys
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if let Key::D = key {
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if let Some(system) = system.as_ref() {
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system.enable_debugging();
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}
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}
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}
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}
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if let Some(keys) = window.get_keys_released() {
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for key in keys {
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self.check_key(key, false);
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}
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}
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if let Some(updater) = self.mouse.as_mut() {
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if let Some((x, y)) = window.get_mouse_pos(MouseMode::Clamp) {
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let left = window.get_mouse_down(MouseButton::Left);
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let right = window.get_mouse_down(MouseButton::Right);
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let middle = window.get_mouse_down(MouseButton::Middle);
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let next_state = MouseState::with(left, right, middle, x as u32, y as u32);
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self.mouse_state
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.to_events(next_state)
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.into_iter()
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.for_each(|event| updater.update_mouse(event));
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}
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}
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if let Some(updater) = self.window.as_mut() {
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if let Ok(frame) = updater.take_frame() {
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last_frame = frame
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}
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window.update_with_buffer(&last_frame.bitmap, last_frame.width as usize, last_frame.height as usize).unwrap();
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}
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}
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}
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fn check_key(&mut self, key: Key, state: bool) {
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if let Some(updater) = self.keyboard.as_mut() {
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updater.update_keyboard(KeyEvent::new(map_key(key), state));
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}
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if let Some(updater) = self.controller.as_mut() {
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if let Some(event) = map_controller_a(key, state) {
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updater.update_controller(event);
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}
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}
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}
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}
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