Cargo.lock

@@ -1957,6 +1957,7 @@ name = "shrooms-vb-native"
 version = "0.1.0"
 dependencies = [
  "anyhow",
+ "bitflags 2.6.0",
  "bytemuck",
  "cc",
  "clap",

Cargo.toml

@@ -5,6 +5,7 @@ edition = "2021"
 
 [dependencies]
 anyhow = "1"
+bitflags = "2"
 bytemuck = { version = "1", features = ["derive"] }
 clap = { version = "4", features = ["derive"] }
 cpal = "0.15"

src/app.rs

@@ -9,13 +9,13 @@ use winit::platform::windows::{CornerPreference, WindowAttributesExtWindows as _
 use winit::{
     application::ApplicationHandler,
     dpi::{LogicalSize, PhysicalSize},
-    event::{ElementState, Event, WindowEvent},
+    event::{Event, WindowEvent},
     event_loop::ActiveEventLoop,
-    keyboard::Key,
     window::Window,
 };
 
 use crate::{
+    controller::ControllerState,
     emulator::{EmulatorClient, EmulatorCommand},
     renderer::GameRenderer,
 };
@@ -270,13 +270,17 @@ impl AppWindow {
 pub struct App {
     window: Option<AppWindow>,
     client: EmulatorClient,
+    controller: ControllerState,
 }
 
 impl App {
     pub fn new(client: EmulatorClient) -> Self {
+        let controller = ControllerState::new();
+        client.send_command(EmulatorCommand::SetKeys(controller.pressed()));
         Self {
             window: None,
             client,
+            controller,
         }
     }
 }
@@ -305,15 +309,9 @@ impl ApplicationHandler for App {
             }
             WindowEvent::CloseRequested => event_loop.exit(),
             WindowEvent::KeyboardInput { event, .. } => {
-                if let Key::Character("s") = event.logical_key.as_ref() {
-                    match event.state {
-                        ElementState::Pressed => {
-                            self.client.send_command(EmulatorCommand::PressStart)
-                        }
-                        ElementState::Released => {
-                            self.client.send_command(EmulatorCommand::ReleaseStart)
-                        }
-                    }
+                if self.controller.key_event(event) {
+                    self.client
+                        .send_command(EmulatorCommand::SetKeys(self.controller.pressed()));
                 }
             }
             WindowEvent::RedrawRequested => {

src/controller.rs

@@ -0,0 +1,64 @@
+use winit::{
+    event::{ElementState, KeyEvent},
+    keyboard::{Key, NamedKey},
+};
+
+use crate::shrooms_vb_core::VBKey;
+
+pub struct ControllerState {
+    pressed: VBKey,
+}
+
+impl ControllerState {
+    pub fn new() -> Self {
+        Self {
+            pressed: VBKey::SGN,
+        }
+    }
+
+    pub fn pressed(&self) -> VBKey {
+        self.pressed
+    }
+
+    pub fn key_event(&mut self, event: &KeyEvent) -> bool {
+        let Some(input) = self.key_to_input(&event.logical_key) else {
+            return false;
+        };
+        match event.state {
+            ElementState::Pressed => {
+                if self.pressed.contains(input) {
+                    return false;
+                }
+                self.pressed.insert(input);
+                true
+            }
+            ElementState::Released => {
+                if !self.pressed.contains(input) {
+                    return false;
+                }
+                self.pressed.remove(input);
+                true
+            }
+        }
+    }
+
+    fn key_to_input(&self, key: &Key) -> Option<VBKey> {
+        match key.as_ref() {
+            Key::Character("a") => Some(VBKey::SEL),
+            Key::Character("s") => Some(VBKey::STA),
+            Key::Character("d") => Some(VBKey::B),
+            Key::Character("f") => Some(VBKey::A),
+            Key::Character("e") => Some(VBKey::LT),
+            Key::Character("r") => Some(VBKey::RT),
+            Key::Character("i") => Some(VBKey::RU),
+            Key::Character("j") => Some(VBKey::RL),
+            Key::Character("k") => Some(VBKey::RD),
+            Key::Character("l") => Some(VBKey::RR),
+            Key::Named(NamedKey::ArrowUp) => Some(VBKey::LU),
+            Key::Named(NamedKey::ArrowLeft) => Some(VBKey::LL),
+            Key::Named(NamedKey::ArrowDown) => Some(VBKey::LD),
+            Key::Named(NamedKey::ArrowRight) => Some(VBKey::LR),
+            _ => None,
+        }
+    }
+}

src/emulator.rs

@@ -10,7 +10,11 @@ use std::{
 
 use anyhow::Result;
 
-use crate::{audio::Audio, renderer::GameRenderer, shrooms_vb_core::CoreVB};
+use crate::{
+    audio::Audio,
+    renderer::GameRenderer,
+    shrooms_vb_core::{CoreVB, VBKey},
+};
 
 pub struct EmulatorBuilder {
     rom: Option<PathBuf>,
@@ -132,11 +136,8 @@ impl Emulator {
                 self.sim.reset();
                 self.running.store(true, Ordering::Release);
             }
-            EmulatorCommand::PressStart => {
-                self.sim.set_keys(0x1003);
-            }
-            EmulatorCommand::ReleaseStart => {
-                self.sim.set_keys(0x0003);
+            EmulatorCommand::SetKeys(keys) => {
+                self.sim.set_keys(keys);
             }
         }
     }
@@ -149,8 +150,7 @@ pub enum EmulatorCommand {
     Pause,
     Resume,
     Reset,
-    PressStart,
-    ReleaseStart,
+    SetKeys(VBKey),
 }
 
 pub struct EmulatorClient {

src/main.rs

@@ -8,6 +8,7 @@ use winit::event_loop::{ControlFlow, EventLoop};
 
 mod app;
 mod audio;
+mod controller;
 mod emulator;
 mod renderer;
 mod shrooms_vb_core;

src/shrooms_vb_core.rs

@@ -1,6 +1,7 @@
 use std::{ffi::c_void, ptr, slice};
 
 use anyhow::{anyhow, Result};
+use bitflags::bitflags;
 use num_derive::{FromPrimitive, ToPrimitive};
 
 #[repr(C)]
@@ -24,6 +25,28 @@ enum VBDataType {
     F32 = 5,
 }
 
+bitflags! {
+    #[derive(Clone, Copy, Debug)]
+    pub struct VBKey: u16 {
+        const PWR = 0x0001;
+        const SGN = 0x0002;
+        const A   = 0x0004;
+        const B   = 0x0008;
+        const RT  = 0x0010;
+        const LT  = 0x0020;
+        const RU  = 0x0040;
+        const RR  = 0x0080;
+        const LR  = 0x0100;
+        const LL  = 0x0200;
+        const LD  = 0x0400;
+        const LU  = 0x0800;
+        const STA = 0x1000;
+        const SEL = 0x2000;
+        const RL  = 0x4000;
+        const RD  = 0x8000;
+    }
+}
+
 type OnFrame = extern "C" fn(sim: *mut VB) -> c_int;
 
 #[link(name = "vb")]
@@ -198,8 +221,8 @@ impl CoreVB {
         };
     }
 
-    pub fn set_keys(&mut self, keys: u16) {
-        unsafe { vb_set_keys(self.sim, keys) };
+    pub fn set_keys(&mut self, keys: VBKey) {
+        unsafe { vb_set_keys(self.sim, keys.bits()) };
     }
 }