Connected the web ui controller inputs to sim

emulator/core/src/host/input.rs

@@ -15,6 +15,7 @@ pub fn event_queue<T>() -> (EventSender<T>, EventReceiver<T>) {
     (sender, receiver)
 }
 
+#[derive(Clone)]
 pub struct EventSender<T> {
     queue: Arc<Mutex<VecDeque<T>>>,
 }
@@ -23,10 +24,6 @@ impl<T> EventSender<T> {
     pub fn send(&self, event: T) {
         self.queue.lock().unwrap().push_back(event);
     }
-
-    //pub fn send_at_instant(&self, instant: Instant, event: T) {
-    //    self.queue.lock().unwrap().push_back((instant, event));
-    //}
 }
 
 pub struct EventReceiver<T> {

emulator/frontends/pixels/assets/moa-genesis/index.html

@@ -24,11 +24,12 @@
     <div id="video-screen">
       <canvas id="video" tabindex="0" draw-raw-handle="1" />
     </div>
+
     <div id="controller">
       <button name="left">&#x21E6;</button>
       <button name="up">&#x21E7;</button>
-      <button name="down">&#x21E8;</button>
-      <button name="right">&#x21E9;</button>
+      <button name="down">&#x21E9;</button>
+      <button name="right">&#x21E8;</button>
 
       <button name="start">Start</button>
 

emulator/frontends/pixels/assets/moa-genesis/interface.js

@@ -1,49 +1,70 @@
 
 import * as Emulator from './moa-genesis.js';
 
-function initialize_emulator() {
-    let host = Emulator.new_host();
-    let system = Emulator.load_system(host, Emulator.get_load_system_fn());
-
-    //Emulator.start_system(system);
-    let last_update = performance.now();
-    setTimeout(function refreshFrame() {
-        let current = performance.now();
-        let diff = current - last_update;
-        //let remaining = Math.max((16 * Emulator.get_speed()) - diff, 0);
-        last_update = current;
-
-        let runtime = Emulator.run_system_for(system, diff * 1_000_000);
-        if (Emulator.is_running()) {
-            let remaining = Math.max(diff - runtime - (diff * 0.1), 1);
-            setTimeout(refreshFrame, remaining);
-        }
-    }, 0);
-
-    Emulator.host_run_loop(host);
-}
-
-// Update the frame rate display
-var frame_rate_el = document.getElementById("frame-rate");
-var frame_rate = setInterval(function () {
-    frame_rate_el.value = Emulator.get_frames_since();
-}, 1000);
-
 window.addEventListener("load", () => {
     Emulator.default();
 });
 
+function initialize_emulator() {
+    const host = Emulator.new_host();
+    const system = Emulator.load_system(host, Emulator.get_load_system_fn());
+
+    //Emulator.start_system(system);
+    let last_update = performance.now();
+    setTimeout(function refreshFrame() {
+        // Calculate the time difference since the last update cycle
+        const current = performance.now();
+        const diff = current - last_update;
+        last_update = current;
+
+        // Run the system for the difference, and get the realtime runtime in millis
+        const runtime = Emulator.run_system_for(system, diff * 1_000_000);
+
+        if (Emulator.is_running()) {
+            // Calculate the timeout needed to fill the time that was *not* taken by the sim
+            const remaining = Math.max(diff - runtime - (diff * 0.1), 1);
+            setTimeout(refreshFrame, remaining);
+        }
+    }, 0);
+
+    const controllers = Emulator.get_controllers(host);
+    function button_event(e) {
+        let state;
+        if (e.type == 'mousedown' || e.type == 'touchstart') {
+            state = true;
+        } else {
+            state = false;
+        }
+        Emulator.button_press(controllers, e.target.name, state);
+    }
+
+    document.getElementById("controller").querySelectorAll('button').forEach(function (button) {
+        button.addEventListener('mousedown', button_event);
+        button.addEventListener('mouseup', button_event);
+        button.addEventListener('touchstart', button_event);
+        button.addEventListener('touchend', button_event);
+    });
+
+    Emulator.host_run_loop(host);
+}
+
+// Update the frame rate display
+const frame_rate_el = document.getElementById("frame-rate");
+const frame_rate = setInterval(function () {
+    frame_rate_el.value = Emulator.get_frames_since();
+}, 1000);
+
 // Load a new ROM file
-var reader = new FileReader();
+const reader = new FileReader();
 reader.onloadend = function (e) {
-    var data = new Uint8Array(reader.result);
+    let data = new Uint8Array(reader.result);
     // If the SMD file magic number is present, then convert it before loading
     if (data[8] == 0xAA && data[9] == 0xBB)
         data = Emulator.smd_to_bin(data);
     Emulator.set_rom_data(data);
 };
 
-var file_input = document.getElementById("rom-file");
+const file_input = document.getElementById("rom-file");
 file_input.addEventListener("change", e => {
     document.getElementById("video").focus();
     reader.readAsArrayBuffer(file_input.files[0])
@@ -62,8 +83,8 @@ document.getElementById("power").addEventListener("click", () => {
         initialize_emulator();
 });
 
-var mute_state = false;
-var mute = document.getElementById("mute");
+let mute_state = false;
+const mute = document.getElementById("mute");
 mute.addEventListener("click", () => {
     mute_state = !mute_state;
     if (mute_state) {
@@ -74,19 +95,3 @@ mute.addEventListener("click", () => {
     Emulator.set_mute(mute_state);
 });
 
-function button_event(e) {
-    var state;
-    if (e.type == 'mousedown' || e.type == 'touchstart') {
-        state = true;
-    } else {
-        state = false;
-    }
-    Emulator.button_press(e.target.name, state);
-}
-
-document.getElementById("controller").querySelectorAll('button').forEach(function (button) {
-    button.addEventListener('mousedown', button_event);
-    button.addEventListener('mouseup', button_event);
-    button.addEventListener('touchstart', button_event);
-    button.addEventListener('touchend', button_event);
-});

emulator/frontends/pixels/assets/moa-genesis/style.css

@@ -25,6 +25,19 @@ body {
     cursor: pointer;
 }
 
+#controller {
+    width: 100%;
+    display: flex;
+}
+
+#controller button {
+    flex: 1;
+    width: 100%;
+    height: 40px;
+    margin-top: 2px;
+    margin-bottom: 2px;
+}
+
 #controller .updown {
     overflow: hidden;
 }

emulator/frontends/pixels/src/frontend.rs

@@ -1,4 +1,6 @@
 
+use std::rc::Rc;
+
 use instant::Instant;
 use pixels::{Pixels, SurfaceTexture};
 use winit::event::{Event, VirtualKeyCode, WindowEvent, ElementState};
@@ -38,6 +40,10 @@ impl PixelsFrontend {
     pub fn get_mixer(&self) -> AudioMixer {
         self.mixer.clone()
     }
+
+    pub fn get_controllers(&self) -> Option<EventSender<ControllerEvent>> {
+        self.controllers.clone()
+    }
 }
 
 impl Host for PixelsFrontend {

emulator/frontends/pixels/src/native.rs

@@ -5,12 +5,13 @@ use winit::dpi::LogicalSize;
 use winit::event_loop::EventLoop;
 use winit::window::{Window, WindowBuilder};
 
-use crate::frontend::{self, LoadSystemFn};
+use crate::frontend::{self, LoadSystemFn, PixelsFrontend};
 
 pub fn start(load: LoadSystemFn) {
     env_logger::init();
 
-    pollster::block_on(frontend::run(load));
+    let host = PixelsFrontend::new();
+    pollster::block_on(frontend::run_loop(host));
 }
 
 pub fn create_window<T>(event_loop: &EventLoop<T>) -> Rc<Window> {

emulator/frontends/pixels/src/web.rs

@@ -13,6 +13,7 @@ use wasm_bindgen::JsCast;
 use wasm_bindgen::closure::Closure;
 
 use moa_core::{ClockDuration, System, wrap_transmutable};
+use moa_core::host::{ControllerInput, ControllerDevice, ControllerEvent, EventSender};
 
 use crate::settings;
 use crate::frontend::{self, PixelsFrontend, LoadSystemFn};
@@ -72,19 +73,41 @@ pub fn set_mute(mute: bool) {
 }
 
 #[wasm_bindgen]
-pub fn button_press(name: String, state: bool) {
-    
+pub fn button_press(handle: &ControllersHandle, name: String, state: bool) {
+    let input = match name.as_str() {
+        "up" => Some(ControllerInput::DpadUp(state)),
+        "down" => Some(ControllerInput::DpadDown(state)),
+        "left" => Some(ControllerInput::DpadLeft(state)),
+        "right" => Some(ControllerInput::DpadRight(state)),
+        "start" => Some(ControllerInput::Start(state)),
+        "a" => Some(ControllerInput::ButtonA(state)),
+        "b" => Some(ControllerInput::ButtonB(state)),
+        "c" => Some(ControllerInput::ButtonC(state)),
+        _ => None
+    };
+
+    if let Some(input) = input {
+        handle.0.send(ControllerEvent::new(ControllerDevice::A, input));
+    }
 }
 
 
 #[wasm_bindgen]
 pub struct HostHandle(PixelsFrontend);
 
+#[wasm_bindgen]
+pub struct ControllersHandle(EventSender<ControllerEvent>);
+
 #[wasm_bindgen]
 pub fn new_host() -> HostHandle {
     HostHandle(PixelsFrontend::new())
 }
 
+#[wasm_bindgen]
+pub fn get_controllers(handle: &HostHandle) -> ControllersHandle {
+    ControllersHandle(handle.0.get_controllers().unwrap())
+}
+
 #[wasm_bindgen]
 pub fn host_run_loop(handle: HostHandle) {
     wasm_bindgen_futures::spawn_local(frontend::run_loop(handle.0));
@@ -196,50 +219,6 @@ pub fn create_window<T>(event_loop: &EventLoop<T>) -> Rc<Window> {
     }
     */
 
-    /*
-    fn ycombinator<F>(f: &F)
-    where
-        F: Fn(&F)
-    {
-        f(f)
-    }
-
-
-    let closure: Closure<dyn Fn(Event)> = Closure::new(move |_e: Event| {
-        
-    });
-    client_window
-        .set_interval_with_callback_and_timeout_and_arguments_0(closure.as_ref().unchecked_ref(), 17)
-        .unwrap();
-    closure.forget();
-    */
-
-    /*
-    let mut update_timer = Instant::now();
-    let mut system = load(&mut host, settings::get().rom_data.clone()).unwrap();
-    let closure = wasm_bindgen::closure::Closure::wrap(Box::new(move |_e: web_sys::Event| {
-        let run_timer = Instant::now();
-        let nanoseconds_per_frame = (16_600_000 as f32 * settings::get().speed) as Clock;
-        if let Err(err) = system.run_for(nanoseconds_per_frame) {
-            log::error!("{:?}", err);
-        }
-        log::info!("ran simulation for {:?}ms in {:?}ms", nanoseconds_per_frame / 1_000_000, run_timer.elapsed().as_millis());
-
-        let settings = settings::get();
-        if settings.run {
-            //match load(&mut host.lock().unwrap(), settings.rom_data.clone()) {
-            //    Ok(s) => { system = s; },
-            //    Err(err) => log::error!("{:?}", err),
-            //}
-        }
-    }) as Box<dyn FnMut(_)>);
-    client_window
-        .set_interval_with_callback_and_timeout_and_arguments_0(closure.as_ref().unchecked_ref(), 17)
-        .unwrap();
-    closure.forget();
-    */
-
-
     window
 }
 

emulator/peripherals/yamaha/src/ym2612.rs

@@ -691,7 +691,7 @@ fn sign_extend_u16(value: u16, size: usize) -> i16 {
 
 struct Dac {
     enabled: bool,
-    samples: VecDeque<f32>,
+    samples: VecDeque<(FmClock, f32)>,
 }
 
 impl Default for Dac {
@@ -704,16 +704,19 @@ impl Default for Dac {
 }
 
 impl Dac {
-    fn add_sample(&mut self, sample: f32) {
-        self.samples.push_back(sample);
+    fn add_sample(&mut self, clock: FmClock, sample: f32) {
+        self.samples.push_back((clock, sample));
     }
 
-    fn get_sample(&mut self) -> f32 {
-        if let Some(data) = self.samples.pop_front() {
-            data
-        } else {
-            0.0
+    fn get_sample_after(&mut self, clock: FmClock) -> f32 {
+        if let Some((sample_clock, data)) = self.samples.front().cloned() {
+            if clock > sample_clock {
+                self.samples.pop_front();
+                return data;
+            }
         }
+
+        0.0
     }
 }
 
@@ -798,7 +801,7 @@ impl Steppable for Ym2612 {
 
             // The DAC uses an 8000 Hz sample rate, so we don't want to skip clocks
             if self.dac.enabled {
-                sample += self.dac.get_sample();
+                sample += self.dac.get_sample_after(fm_clock);
             }
 
             // TODO add stereo output, which is supported by ym2612
@@ -872,8 +875,9 @@ impl Ym2612 {
 
             0x2a => {
                 if self.dac.enabled {
-                    for _ in 0..3 {
-                        self.dac.add_sample(((data as f32 - 128.0) / 255.0) * 2.0);
+                    let fm_clock = clock.as_duration() / self.fm_clock_period;
+                    for i in 0..3 {
+                        self.dac.add_sample(fm_clock + i, ((data as f32 - 128.0) / 255.0) * 2.0);
                     }
                 }
             },