Correctly free resources in uiLoadGame

.gitignore

@@ -1,5 +1,4 @@
-/shrooms-vb
+/shrooms-vb
-/shrooms-vb.exe
+/shrooms-vb.exe
-.vscode
+.vscode
-output
+output
-/target

Cargo.toml

@@ -1,30 +0,0 @@
-[package]
-name = "shrooms-vb"
-version = "0.1.0"
-edition = "2021"
-
-[dependencies]
-anyhow = "1"
-bitflags = "2"
-bytemuck = { version = "1", features = ["derive"] }
-clap = { version = "4", features = ["derive"] }
-cpal = "0.15"
-imgui = { version = "0.12", features = ["tables-api"] }
-imgui-wgpu = { git = "https://github.com/Yatekii/imgui-wgpu-rs", rev = "2edd348" }
-imgui-winit-support = "0.13"
-itertools = "0.13"
-native-dialog = "0.7"
-num-derive = "0.4"
-num-traits = "0.2"
-pollster = "0.4"
-rtrb = "0.3"
-rubato = "0.16"
-thread-priority = "1"
-wgpu = "22.1"
-winit = "0.30"
-
-[build-dependencies]
-cc = "1"
-
-[profile.release]
-lto = true

README.md

@@ -1,15 +1,19 @@
 # Shrooms VB (native)
 
-A native implementation of shrooms-vb. Written in Rust, using winit, wgpu, and Dear ImGui. Should run on any major OS.
+An SDL-based implementation of shrooms-vb.
 
 ## Setup
 
 Install the following dependencies:
- - `cargo`
+ - `gcc` (or MinGW on Windows) (or whatever, just set `CC`)
+ - `pkg-config`
+ - sdl2
 
 Run
 ```sh
-cargo build --release
+make build
 ```
 
-The executable will be in `target/release/shrooms-vb[.exe]`
+## Dependencies
+
+This program uses a vendored version of [nuklear](https://github.com/Immediate-Mode-UI/Nuklear/tree/6566d9075d5fed48af014c93f87c4aed8c4bd21c) for GUIs.

assets.h

@@ -0,0 +1,17 @@
+#ifndef SHROOMS_VB_NATIVE_ASSETS_
+#define SHROOMS_VB_NATIVE_ASSETS_
+
+#include <stdint.h>
+
+extern const uint8_t _binary_assets_lefteye_bin_start;
+const uint8_t *LEFT_EYE_DEFAULT = &_binary_assets_lefteye_bin_start; 
+
+extern const uint8_t _binary_assets_righteye_bin_start;
+const uint8_t *RIGHT_EYE_DEFAULT = &_binary_assets_righteye_bin_start; 
+
+extern const uint8_t _binary_assets_selawk_bin_start;
+extern const uint8_t _binary_assets_selawk_bin_end;
+const uint8_t *SELAWIK = &_binary_assets_selawk_bin_start;
+#define SELAWIK_LEN (&_binary_assets_selawk_bin_end - &_binary_assets_selawk_bin_start)
+
+#endif

audio.c

@@ -0,0 +1,69 @@
+#include <audio.h>
+#include <stdio.h>
+
+void audioCallback(void *userdata, uint8_t *stream, int len) {
+    AudioContext *aud;
+    SDL_assert(len == 834 * 4);
+
+    aud = userdata;
+    if (!aud->filled) {
+        /* too little data, play silence */
+        SDL_memset4(stream, 0, 834);
+        return;
+    }
+    SDL_memcpy4(stream, aud->buffers[aud->current], 834);
+    ++aud->current;
+    aud->current %= 2;
+    aud->filled -= 1;
+} 
+
+int audioInit(AudioContext *aud) {
+    SDL_AudioSpec spec;
+    spec.freq = 41700;
+    spec.format = AUDIO_S16;
+    spec.channels = 2;
+    spec.samples = 834;
+    spec.callback = &audioCallback;
+    spec.userdata = aud;
+
+    aud->id = SDL_OpenAudioDevice(NULL, 0, &spec, NULL, 0);
+    aud->paused = true;
+    if (!aud->id) {
+        fprintf(stderr, "could not open audio device: %s\n", SDL_GetError());
+        return -1;
+    }
+    aud->current = 0;
+    aud->filled = 0;
+    return 0;
+}
+
+void audioDestroy(AudioContext *aud) {
+    SDL_CloseAudioDevice(aud->id);
+}
+
+int audioUpdate(AudioContext *aud, void *data, uint32_t bytes) {
+    int filled;
+    if (!aud->id) return -1;
+    SDL_assert(bytes == 834 * 4);
+
+    SDL_LockAudioDevice(aud->id);
+    if (aud->filled < 2) {
+        int next = (aud->current + aud->filled) % 2;
+        SDL_memcpy4(aud->buffers[next], data, bytes / 4);
+        aud->filled += 1;
+    }
+    filled = aud->filled;
+    SDL_UnlockAudioDevice(aud->id);
+
+    if (aud->paused) {
+        SDL_PauseAudioDevice(aud->id, false);
+        aud->paused = false;
+    }
+
+    while (filled > 1) {
+        SDL_Delay(0);
+        filled = aud->filled;
+    }
+
+    return 0;
+}

audio.h

@@ -0,0 +1,19 @@
+#ifndef SHROOMS_VB_NATIVE_AUDIO_
+#define SHROOMS_VB_NATIVE_AUDIO_
+
+#include <SDL2/SDL.h>
+#include <stdbool.h>
+
+typedef struct {
+    SDL_AudioDeviceID id;
+    bool paused;
+    uint32_t buffers[2][834];
+    int current;
+    int filled;
+} AudioContext;
+
+int audioInit(AudioContext *aud);
+void audioDestroy(AudioContext *aud);
+int audioUpdate(AudioContext *aud, void *data, uint32_t bytes);
+
+#endif

build.rs

@@ -1,12 +0,0 @@
-use std::path::Path;
-
-fn main() {
-    println!("cargo::rerun-if-changed=shrooms-vb-core");
-    cc::Build::new()
-        .include(Path::new("shrooms-vb-core/core"))
-        .opt_level(2)
-        .flag_if_supported("-flto")
-        .flag_if_supported("-fno-strict-aliasing")
-        .file(Path::new("shrooms-vb-core/core/vb.c"))
-        .compile("vb");
-}

cli.c

@@ -0,0 +1,16 @@
+#include <cli.h>
+#include <stdio.h>
+
+int parseCLIArgs(int argc, char **argv, CLIArgs *args) {
+    int arg;
+
+    args->filename = NULL;
+    for (arg = 1; arg < argc; ++arg) {
+        if (args->filename) {
+            fprintf(stderr, "usage: %s /path/to/rom.vb\n", argv[0]);
+            return 1;
+        }
+        args->filename = argv[arg];
+    }
+    return 0;
+}

cli.h

@@ -0,0 +1,10 @@
+#ifndef SHROOMS_VB_NATIVE_CLI_
+#define SHROOMS_VB_NATIVE_CLI_
+
+typedef struct {
+    char *filename;
+} CLIArgs;
+
+int parseCLIArgs(int argc, char **argv, CLIArgs *args);
+
+#endif

controller.c

@@ -0,0 +1,65 @@
+#include <controller.h>
+
+#define VB_PWR 0x0001
+#define VB_SGN 0x0002
+#define VB_A   0x0004
+#define VB_B   0x0008
+#define VB_RT  0x0010
+#define VB_LT  0x0020
+#define VB_RU  0x0040
+#define VB_RR  0x0080
+#define VB_LR  0x0100
+#define VB_LL  0x0200
+#define VB_LD  0x0400
+#define VB_LU  0x0800
+#define VB_STA 0x1000
+#define VB_SEL 0x2000
+#define VB_RL  0x4000
+#define VB_RD  0x8000
+
+static uint16_t symToMask(SDL_KeyCode sym) {
+    switch (sym) {
+    default: return 0;
+    case SDLK_a:
+        return VB_SEL;
+    case SDLK_s:
+        return VB_STA;
+    case SDLK_d:
+        return VB_B;
+    case SDLK_f:
+        return VB_A;
+    case SDLK_e:
+        return VB_LT;
+    case SDLK_r:
+        return VB_RT;
+    case SDLK_i:
+        return VB_RU;
+    case SDLK_j:
+        return VB_RL;
+    case SDLK_k:
+        return VB_RD;
+    case SDLK_l:
+        return VB_RR;
+    case SDLK_UP:
+        return VB_LU;
+    case SDLK_LEFT:
+        return VB_LL;
+    case SDLK_DOWN:
+        return VB_LD;
+    case SDLK_RIGHT:
+        return VB_LR;
+    }
+}
+
+void ctrlInit(ControllerState *ctrl) {
+    ctrl->keys = VB_SGN;
+}
+void ctrlKeyDown(ControllerState *ctrl, SDL_Keycode sym) {
+    ctrl->keys |= symToMask(sym);
+}
+void ctrlKeyUp(ControllerState *ctrl, SDL_Keycode sym) {
+    ctrl->keys &= ~symToMask(sym);
+}
+uint16_t ctrlKeys(ControllerState *ctrl) {
+    return ctrl->keys;
+}

controller.h

@@ -0,0 +1,16 @@
+#ifndef SHROOMS_VB_NATIVE_CONTROLLER_
+#define SHROOMS_VB_NATIVE_CONTROLLER_
+
+#include <SDL2/SDL.h>
+#include <stdint.h>
+
+typedef struct {
+    uint16_t keys;
+} ControllerState;
+
+void ctrlInit(ControllerState *ctrl);
+void ctrlKeyDown(ControllerState *ctrl, SDL_Keycode sym);
+void ctrlKeyUp(ControllerState *ctrl, SDL_Keycode sym);
+uint16_t ctrlKeys(ControllerState *ctrl);
+
+#endif

emulation.c

@@ -0,0 +1,75 @@
+#include "emulation.h"
+#include <stdlib.h>
+
+static int onFrame(VB *sim) {
+    SimContext *ctx = vbGetUserData(sim);
+    ctx->hasFrame = true;
+    return 1;
+}
+
+int emuInit(EmulationContext *emu) {
+    emu->sim = malloc(vbSizeOf());
+    vbInit(emu->sim);
+
+    emu->ctx = malloc(sizeof(SimContext));
+    emu->ctx->hasFrame = false;
+    emu->ctx->currentSample = 0;
+    vbSetSamples(emu->sim, emu->ctx->samples[emu->ctx->currentSample], VB_S16, 834);
+    vbSetUserData(emu->sim, emu->ctx);
+    vbSetFrameCallback(emu->sim, &onFrame);
+
+    return 0;
+}
+
+void emuDestroy(EmulationContext *emu) {
+    uint8_t *rom = vbGetCartROM(emu->sim, NULL);
+    SimContext *ctx = vbGetUserData(emu->sim);
+
+    if (rom) free(rom);
+    if (ctx) free(ctx);
+    free(emu->sim);
+}
+
+void emuLoadGame(EmulationContext *emu, uint8_t *rom, uint32_t romSize) {
+    uint8_t *oldRom = vbGetCartROM(emu->sim, NULL);
+    if (oldRom) free(oldRom);
+    vbSetCartROM(emu->sim, rom, romSize);
+    vbReset(emu->sim);
+}
+
+void emuReset(EmulationContext *emu) {
+    vbReset(emu->sim);
+}
+
+bool emuIsGameLoaded(EmulationContext *emu) {
+    return vbGetCartROM(emu->sim, NULL) != NULL;
+}
+
+#define MAX_STEP_CLOCKS 20000000
+void emuTick(EmulationContext *emu) {
+    uint32_t clocks = MAX_STEP_CLOCKS;
+    vbEmulate(emu->sim, &clocks);
+}
+
+bool emuReadPixels(EmulationContext *emu, uint8_t *left, uint8_t *right) {
+    if (!emu->ctx->hasFrame) {
+        return false;
+    }
+    emu->ctx->hasFrame = false;
+    vbGetPixels(emu->sim, left, 1, 384, right, 1, 384);
+    return true;
+}
+
+void emuReadSamples(EmulationContext *emu, void **data, uint32_t *bytes) {
+    uint32_t samplePairs;
+
+    *data = vbGetSamples(emu->sim, NULL, NULL, &samplePairs);
+    *bytes = samplePairs * 4;
+    emu->ctx->currentSample += 1;
+    emu->ctx->currentSample %= 2;
+    vbSetSamples(emu->sim, emu->ctx->samples[emu->ctx->currentSample], VB_S16, 834);
+}
+
+void emuSetKeys(EmulationContext *emu, uint16_t keys) {
+    vbSetKeys(emu->sim, keys);
+}

emulation.h

@@ -0,0 +1,30 @@
+#ifndef SHROOMS_VB_NATIVE_EMULATION_
+#define SHROOMS_VB_NATIVE_EMULATION_
+
+#include "shrooms-vb-core/core/vb.h"
+#include <stdbool.h>
+#include <stdint.h>
+
+typedef struct SimContext {
+    bool hasFrame;
+    uint32_t samples[2][834];
+    uint32_t currentSample;
+} SimContext;
+
+typedef struct EmulationContext {
+    VB *sim;
+    SimContext *ctx;
+} EmulationContext;
+
+int emuInit(EmulationContext *emu);
+void emuDestroy(EmulationContext *emu);
+void emuLoadGame(EmulationContext *emu, uint8_t *rom, uint32_t romSize);
+void emuReset(EmulationContext *emu);
+bool emuIsGameLoaded(EmulationContext *emu);
+
+void emuTick(EmulationContext *emu);
+bool emuReadPixels(EmulationContext *emu, uint8_t *left, uint8_t *right);
+void emuReadSamples(EmulationContext *emu, void **data, uint32_t *bytes);
+void emuSetKeys(EmulationContext *emu, uint16_t keys);
+
+#endif

external/nuklear_sdl_renderer.h

@@ -0,0 +1,393 @@
+/*
+ * Nuklear - 4.9.4 - public domain
+ */
+/*
+ * ==============================================================
+ *
+ *                              API
+ *
+ * ===============================================================
+ */
+#ifndef NK_SDL_RENDERER_H_
+#define NK_SDL_RENDERER_H_
+
+#ifndef NK_SDL_RENDERER_SDL_H
+#define NK_SDL_RENDERER_SDL_H <SDL.h>
+#endif
+#include NK_SDL_RENDERER_SDL_H
+NK_API struct nk_context*   nk_sdl_init(SDL_Window *win, SDL_Renderer *renderer);
+NK_API void                 nk_sdl_font_stash_begin(struct nk_font_atlas **atlas);
+NK_API void                 nk_sdl_font_stash_end(void);
+NK_API int                  nk_sdl_handle_event(SDL_Event *evt);
+NK_API void                 nk_sdl_render(enum nk_anti_aliasing);
+NK_API void                 nk_sdl_shutdown(void);
+NK_API void                 nk_sdl_handle_grab(void);
+
+#if SDL_COMPILEDVERSION < SDL_VERSIONNUM(2, 0, 22)
+/* Metal API does not support cliprects with negative coordinates or large
+ * dimensions. The issue is fixed in SDL2 with version 2.0.22 but until
+ * that version is released, the NK_SDL_CLAMP_CLIP_RECT flag can be used to
+ * ensure the cliprect is itself clipped to the viewport.
+ * See discussion at https://discourse.libsdl.org/t/rendergeometryraw-producing-different-results-in-metal-vs-opengl/34953
+ */
+#define NK_SDL_CLAMP_CLIP_RECT
+#endif
+
+#endif /* NK_SDL_RENDERER_H_ */
+
+/*
+ * ==============================================================
+ *
+ *                          IMPLEMENTATION
+ *
+ * ===============================================================
+ */
+#ifdef NK_SDL_RENDERER_IMPLEMENTATION
+#include <string.h>
+#include <stdlib.h>
+
+struct nk_sdl_device {
+    struct nk_buffer cmds;
+    struct nk_draw_null_texture tex_null;
+    SDL_Texture *font_tex;
+};
+
+struct nk_sdl_vertex {
+    float position[2];
+    float uv[2];
+    nk_byte col[4];
+};
+
+static struct nk_sdl {
+    SDL_Window *win;
+    SDL_Renderer *renderer;
+    struct nk_sdl_device ogl;
+    struct nk_context ctx;
+    struct nk_font_atlas atlas;
+    Uint64 time_of_last_frame;
+} sdl;
+
+NK_INTERN void
+nk_sdl_device_upload_atlas(const void *image, int width, int height)
+{
+    struct nk_sdl_device *dev = &sdl.ogl;
+
+    SDL_Texture *g_SDLFontTexture = SDL_CreateTexture(sdl.renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STATIC, width, height);
+    if (g_SDLFontTexture == NULL) {
+        SDL_Log("error creating texture");
+        return;
+    }
+    SDL_UpdateTexture(g_SDLFontTexture, NULL, image, 4 * width);
+    SDL_SetTextureBlendMode(g_SDLFontTexture, SDL_BLENDMODE_BLEND);
+    dev->font_tex = g_SDLFontTexture;
+}
+
+NK_API void
+nk_sdl_render(enum nk_anti_aliasing AA)
+{
+    /* setup global state */
+    struct nk_sdl_device *dev = &sdl.ogl;
+
+    {
+        SDL_Rect saved_clip;
+#ifdef NK_SDL_CLAMP_CLIP_RECT
+        SDL_Rect viewport;
+#endif
+        SDL_bool clipping_enabled;
+        int vs = sizeof(struct nk_sdl_vertex);
+        size_t vp = offsetof(struct nk_sdl_vertex, position);
+        size_t vt = offsetof(struct nk_sdl_vertex, uv);
+        size_t vc = offsetof(struct nk_sdl_vertex, col);
+
+        /* convert from command queue into draw list and draw to screen */
+        const struct nk_draw_command *cmd;
+        const nk_draw_index *offset = NULL;
+        struct nk_buffer vbuf, ebuf;
+
+        /* fill converting configuration */
+        struct nk_convert_config config;
+        static const struct nk_draw_vertex_layout_element vertex_layout[] = {
+            {NK_VERTEX_POSITION, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, position)},
+            {NK_VERTEX_TEXCOORD, NK_FORMAT_FLOAT, NK_OFFSETOF(struct nk_sdl_vertex, uv)},
+            {NK_VERTEX_COLOR, NK_FORMAT_R8G8B8A8, NK_OFFSETOF(struct nk_sdl_vertex, col)},
+            {NK_VERTEX_LAYOUT_END}
+        };
+
+        Uint64 now = SDL_GetTicks64();
+        sdl.ctx.delta_time_seconds = (float)(now - sdl.time_of_last_frame) / 1000;
+        sdl.time_of_last_frame = now;
+
+        NK_MEMSET(&config, 0, sizeof(config));
+        config.vertex_layout = vertex_layout;
+        config.vertex_size = sizeof(struct nk_sdl_vertex);
+        config.vertex_alignment = NK_ALIGNOF(struct nk_sdl_vertex);
+        config.tex_null = dev->tex_null;
+        config.circle_segment_count = 22;
+        config.curve_segment_count = 22;
+        config.arc_segment_count = 22;
+        config.global_alpha = 1.0f;
+        config.shape_AA = AA;
+        config.line_AA = AA;
+
+        /* convert shapes into vertexes */
+        nk_buffer_init_default(&vbuf);
+        nk_buffer_init_default(&ebuf);
+        nk_convert(&sdl.ctx, &dev->cmds, &vbuf, &ebuf, &config);
+
+        /* iterate over and execute each draw command */
+        offset = (const nk_draw_index*)nk_buffer_memory_const(&ebuf);
+
+        clipping_enabled = SDL_RenderIsClipEnabled(sdl.renderer);
+        SDL_RenderGetClipRect(sdl.renderer, &saved_clip);
+#ifdef NK_SDL_CLAMP_CLIP_RECT
+        SDL_RenderGetViewport(sdl.renderer, &viewport);
+#endif
+
+        nk_draw_foreach(cmd, &sdl.ctx, &dev->cmds)
+        {
+            if (!cmd->elem_count) continue;
+
+            {
+                SDL_Rect r;
+                r.x = cmd->clip_rect.x;
+                r.y = cmd->clip_rect.y;
+                r.w = cmd->clip_rect.w;
+                r.h = cmd->clip_rect.h;
+#ifdef NK_SDL_CLAMP_CLIP_RECT
+                if (r.x < 0) {
+                    r.w += r.x;
+                    r.x = 0;
+                }
+                if (r.y < 0) {
+                    r.h += r.y;
+                    r.y = 0;
+                }
+                if (r.h > viewport.h) {
+                    r.h = viewport.h;
+                }
+                if (r.w > viewport.w) {
+                    r.w = viewport.w;
+                }
+#endif
+                SDL_RenderSetClipRect(sdl.renderer, &r);
+            }
+
+            {
+                const void *vertices = nk_buffer_memory_const(&vbuf);
+
+                SDL_RenderGeometryRaw(sdl.renderer,
+                        (SDL_Texture *)cmd->texture.ptr,
+                        (const float*)((const nk_byte*)vertices + vp), vs,
+                        (const SDL_Color*)((const nk_byte*)vertices + vc), vs,
+                        (const float*)((const nk_byte*)vertices + vt), vs,
+                        (vbuf.needed / vs),
+                        (void *) offset, cmd->elem_count, 2);
+
+                offset += cmd->elem_count;
+            }
+        }
+
+        SDL_RenderSetClipRect(sdl.renderer, &saved_clip);
+        if (!clipping_enabled) {
+            SDL_RenderSetClipRect(sdl.renderer, NULL);
+        }
+
+        nk_clear(&sdl.ctx);
+        nk_buffer_clear(&dev->cmds);
+        nk_buffer_free(&vbuf);
+        nk_buffer_free(&ebuf);
+    }
+}
+
+static void
+nk_sdl_clipboard_paste(nk_handle usr, struct nk_text_edit *edit)
+{
+    const char *text = SDL_GetClipboardText();
+    if (text) nk_textedit_paste(edit, text, nk_strlen(text));
+    (void)usr;
+}
+
+static void
+nk_sdl_clipboard_copy(nk_handle usr, const char *text, int len)
+{
+    char *str = 0;
+    (void)usr;
+    if (!len) return;
+    str = (char*)malloc((size_t)len+1);
+    if (!str) return;
+    memcpy(str, text, (size_t)len);
+    str[len] = '\0';
+    SDL_SetClipboardText(str);
+    free(str);
+}
+
+NK_API struct nk_context*
+nk_sdl_init(SDL_Window *win, SDL_Renderer *renderer)
+{
+#ifndef NK_SDL_CLAMP_CLIP_RECT
+    SDL_RendererInfo info;
+    SDL_version runtimeVer;
+
+    /* warn for cases where NK_SDL_CLAMP_CLIP_RECT should have been set but isn't */
+    SDL_GetRendererInfo(renderer, &info);
+    SDL_GetVersion(&runtimeVer);
+    if (strncmp("metal", info.name, 5) == 0 &&
+        SDL_VERSIONNUM(runtimeVer.major, runtimeVer.minor, runtimeVer.patch) < SDL_VERSIONNUM(2, 0, 22))
+    {
+        SDL_LogWarn(
+            SDL_LOG_CATEGORY_APPLICATION,
+            "renderer is using Metal API but runtime SDL version %d.%d.%d is older than compiled version %d.%d.%d, "
+            "which may cause issues with rendering",
+            runtimeVer.major, runtimeVer.minor, runtimeVer.patch,
+            SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL
+        );
+    }
+#endif
+    sdl.win = win;
+    sdl.renderer = renderer;
+    sdl.time_of_last_frame = SDL_GetTicks64();
+    nk_init_default(&sdl.ctx, 0);
+    sdl.ctx.clip.copy = nk_sdl_clipboard_copy;
+    sdl.ctx.clip.paste = nk_sdl_clipboard_paste;
+    sdl.ctx.clip.userdata = nk_handle_ptr(0);
+    nk_buffer_init_default(&sdl.ogl.cmds);
+    return &sdl.ctx;
+}
+
+NK_API void
+nk_sdl_font_stash_begin(struct nk_font_atlas **atlas)
+{
+    nk_font_atlas_init_default(&sdl.atlas);
+    nk_font_atlas_begin(&sdl.atlas);
+    *atlas = &sdl.atlas;
+}
+
+NK_API void
+nk_sdl_font_stash_end(void)
+{
+    const void *image; int w, h;
+    image = nk_font_atlas_bake(&sdl.atlas, &w, &h, NK_FONT_ATLAS_RGBA32);
+    nk_sdl_device_upload_atlas(image, w, h);
+    nk_font_atlas_end(&sdl.atlas, nk_handle_ptr(sdl.ogl.font_tex), &sdl.ogl.tex_null);
+    if (sdl.atlas.default_font)
+        nk_style_set_font(&sdl.ctx, &sdl.atlas.default_font->handle);
+}
+
+NK_API void
+nk_sdl_handle_grab(void)
+{
+    struct nk_context *ctx = &sdl.ctx;
+    if (ctx->input.mouse.grab) {
+        SDL_SetRelativeMouseMode(SDL_TRUE);
+    } else if (ctx->input.mouse.ungrab) {
+        /* better support for older SDL by setting mode first; causes an extra mouse motion event */
+        SDL_SetRelativeMouseMode(SDL_FALSE);
+        SDL_WarpMouseInWindow(sdl.win, (int)ctx->input.mouse.prev.x, (int)ctx->input.mouse.prev.y);
+    } else if (ctx->input.mouse.grabbed) {
+        ctx->input.mouse.pos.x = ctx->input.mouse.prev.x;
+        ctx->input.mouse.pos.y = ctx->input.mouse.prev.y;
+    }
+}
+
+NK_API int
+nk_sdl_handle_event(SDL_Event *evt)
+{
+    struct nk_context *ctx = &sdl.ctx;
+
+    switch(evt->type)
+    {
+        case SDL_KEYUP: /* KEYUP & KEYDOWN share same routine */
+        case SDL_KEYDOWN:
+            {
+                int down = evt->type == SDL_KEYDOWN;
+                const Uint8* state = SDL_GetKeyboardState(0);
+                switch(evt->key.keysym.sym)
+                {
+                    case SDLK_RSHIFT: /* RSHIFT & LSHIFT share same routine */
+                    case SDLK_LSHIFT:    nk_input_key(ctx, NK_KEY_SHIFT, down); break;
+                    case SDLK_DELETE:    nk_input_key(ctx, NK_KEY_DEL, down); break;
+                    case SDLK_RETURN:    nk_input_key(ctx, NK_KEY_ENTER, down); break;
+                    case SDLK_TAB:       nk_input_key(ctx, NK_KEY_TAB, down); break;
+                    case SDLK_BACKSPACE: nk_input_key(ctx, NK_KEY_BACKSPACE, down); break;
+                    case SDLK_HOME:      nk_input_key(ctx, NK_KEY_TEXT_START, down);
+                                         nk_input_key(ctx, NK_KEY_SCROLL_START, down); break;
+                    case SDLK_END:       nk_input_key(ctx, NK_KEY_TEXT_END, down);
+                                         nk_input_key(ctx, NK_KEY_SCROLL_END, down); break;
+                    case SDLK_PAGEDOWN:  nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); break;
+                    case SDLK_PAGEUP:    nk_input_key(ctx, NK_KEY_SCROLL_UP, down); break;
+                    case SDLK_z:         nk_input_key(ctx, NK_KEY_TEXT_UNDO, down && state[SDL_SCANCODE_LCTRL]); break;
+                    case SDLK_r:         nk_input_key(ctx, NK_KEY_TEXT_REDO, down && state[SDL_SCANCODE_LCTRL]); break;
+                    case SDLK_c:         nk_input_key(ctx, NK_KEY_COPY, down && state[SDL_SCANCODE_LCTRL]); break;
+                    case SDLK_v:         nk_input_key(ctx, NK_KEY_PASTE, down && state[SDL_SCANCODE_LCTRL]); break;
+                    case SDLK_x:         nk_input_key(ctx, NK_KEY_CUT, down && state[SDL_SCANCODE_LCTRL]); break;
+                    case SDLK_b:         nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down && state[SDL_SCANCODE_LCTRL]); break;
+                    case SDLK_e:         nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down && state[SDL_SCANCODE_LCTRL]); break;
+                    case SDLK_UP:        nk_input_key(ctx, NK_KEY_UP, down); break;
+                    case SDLK_DOWN:      nk_input_key(ctx, NK_KEY_DOWN, down); break;
+                    case SDLK_LEFT:
+                        if (state[SDL_SCANCODE_LCTRL])
+                            nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down);
+                        else nk_input_key(ctx, NK_KEY_LEFT, down);
+                        break;
+                    case SDLK_RIGHT:
+                        if (state[SDL_SCANCODE_LCTRL])
+                            nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down);
+                        else nk_input_key(ctx, NK_KEY_RIGHT, down);
+                        break;
+                }
+            }
+            return 1;
+
+        case SDL_MOUSEBUTTONUP: /* MOUSEBUTTONUP & MOUSEBUTTONDOWN share same routine */
+        case SDL_MOUSEBUTTONDOWN:
+            {
+                int down = evt->type == SDL_MOUSEBUTTONDOWN;
+                const int x = evt->button.x, y = evt->button.y;
+                switch(evt->button.button)
+                {
+                    case SDL_BUTTON_LEFT:
+                        if (evt->button.clicks > 1)
+                            nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, down);
+                        nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); break;
+                    case SDL_BUTTON_MIDDLE: nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down); break;
+                    case SDL_BUTTON_RIGHT:  nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down); break;
+                }
+            }
+            return 1;
+
+        case SDL_MOUSEMOTION:
+            if (ctx->input.mouse.grabbed) {
+                int x = (int)ctx->input.mouse.prev.x, y = (int)ctx->input.mouse.prev.y;
+                nk_input_motion(ctx, x + evt->motion.xrel, y + evt->motion.yrel);
+            }
+            else nk_input_motion(ctx, evt->motion.x, evt->motion.y);
+            return 1;
+
+        case SDL_TEXTINPUT:
+            {
+                nk_glyph glyph;
+                memcpy(glyph, evt->text.text, NK_UTF_SIZE);
+                nk_input_glyph(ctx, glyph);
+            }
+            return 1;
+
+        case SDL_MOUSEWHEEL:
+            nk_input_scroll(ctx,nk_vec2((float)evt->wheel.x,(float)evt->wheel.y));
+            return 1;
+    }
+    return 0;
+}
+
+NK_API
+void nk_sdl_shutdown(void)
+{
+    struct nk_sdl_device *dev = &sdl.ogl;
+    nk_font_atlas_clear(&sdl.atlas);
+    nk_free(&sdl.ctx);
+    SDL_DestroyTexture(dev->font_tex);
+    /* glDeleteTextures(1, &dev->font_tex); */
+    nk_buffer_free(&dev->cmds);
+    memset(&sdl, 0, sizeof(sdl));
+}
+
+#endif /* NK_SDL_RENDERER_IMPLEMENTATION */

external/tinyfiledialogs.h

@@ -0,0 +1,314 @@
+/* SPDX-License-Identifier: Zlib
+Copyright (c) 2014 - 2024 Guillaume Vareille http://ysengrin.com
+	 ____________________________________________________________________
+	|                                                                    |
+	| 100% compatible C C++  ->  You can rename tinfiledialogs.c as .cpp |
+	|____________________________________________________________________|
+
+********* TINY FILE DIALOGS OFFICIAL WEBSITE IS ON SOURCEFORGE *********
+  _________
+ /         \ tinyfiledialogs.h v3.18.2 [Jun 8, 2024]
+ |tiny file| Unique header file created [November 9, 2014]
+ | dialogs |
+ \____  ___/ http://tinyfiledialogs.sourceforge.net
+      \|     git clone http://git.code.sf.net/p/tinyfiledialogs/code tinyfd
+ ____________________________________________
+|                                            |
+|   email: tinyfiledialogs at ysengrin.com   |
+|____________________________________________|
+ ________________________________________________________________________________
+|  ____________________________________________________________________________  |
+| |                                                                            | |
+| |  - in tinyfiledialogs, char is UTF-8 by default (since v3.6)               | |
+| |                                                                            | |
+| | on windows:                                                                | |
+| |  - for UTF-16, use the wchar_t functions at the bottom of the header file  | |
+| |                                                                            | |
+| |  - _wfopen() requires wchar_t                                              | |
+| |  - fopen() uses char but expects ASCII or MBCS (not UTF-8)                 | |
+| |  - if you want char to be MBCS: set tinyfd_winUtf8 to 0                    | |
+| |                                                                            | |
+| |  - alternatively, tinyfiledialogs provides                                 | |
+| |                        functions to convert between UTF-8, UTF-16 and MBCS | |
+| |____________________________________________________________________________| |
+|________________________________________________________________________________|
+
+If you like tinyfiledialogs, please upvote my stackoverflow answer
+https://stackoverflow.com/a/47651444
+
+- License -
+This software is provided 'as-is', without any express or implied
+warranty.  In no event will the authors be held liable for any damages
+arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+1. The origin of this software must not be misrepresented; you must not
+claim that you wrote the original software.  If you use this software
+in a product, an acknowledgment in the product documentation would be
+appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be
+misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+
+     __________________________________________
+    |  ______________________________________  |
+    | |                                      | |
+    | | DO NOT USE USER INPUT IN THE DIALOGS | |
+    | |______________________________________| |
+    |__________________________________________|
+*/
+
+#ifndef TINYFILEDIALOGS_H
+#define TINYFILEDIALOGS_H
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/******************************************************************************************************/
+/**************************************** UTF-8 on Windows ********************************************/
+/******************************************************************************************************/
+#ifdef _WIN32
+/* On windows, if you want to use UTF-8 ( instead of the UTF-16/wchar_t functions at the end of this file )
+Make sure your code is really prepared for UTF-8 (on windows, functions like fopen() expect MBCS and not UTF-8) */
+extern int tinyfd_winUtf8; /* on windows char strings can be 1:UTF-8(default) or 0:MBCS */
+/* for MBCS change this to 0, in tinyfiledialogs.c or in your code */
+
+/* Here are some functions to help you convert between UTF-16 UTF-8 MBSC */
+char * tinyfd_utf8toMbcs(char const * aUtf8string);
+char * tinyfd_utf16toMbcs(wchar_t const * aUtf16string);
+wchar_t * tinyfd_mbcsTo16(char const * aMbcsString);
+char * tinyfd_mbcsTo8(char const * aMbcsString);
+wchar_t * tinyfd_utf8to16(char const * aUtf8string);
+char * tinyfd_utf16to8(wchar_t const * aUtf16string);
+#endif
+/******************************************************************************************************/
+/******************************************************************************************************/
+/******************************************************************************************************/
+
+/************* 3 funtions for C# (you don't need this in C or C++) : */
+char const * tinyfd_getGlobalChar(char const * aCharVariableName); /* returns NULL on error */
+int tinyfd_getGlobalInt(char const * aIntVariableName); /* returns -1 on error */
+int tinyfd_setGlobalInt(char const * aIntVariableName, int aValue); /* returns -1 on error */
+/* aCharVariableName: "tinyfd_version" "tinyfd_needs" "tinyfd_response"
+   aIntVariableName : "tinyfd_verbose" "tinyfd_silent" "tinyfd_allowCursesDialogs"
+				      "tinyfd_forceConsole" "tinyfd_assumeGraphicDisplay" "tinyfd_winUtf8"
+**************/
+
+extern char tinyfd_version[8]; /* contains tinyfd current version number */
+extern char tinyfd_needs[]; /* info about requirements */
+extern int tinyfd_verbose; /* 0 (default) or 1 : on unix, prints the command line calls */
+extern int tinyfd_silent; /* 1 (default) or 0 : on unix, hide errors and warnings from called dialogs */
+
+/** Curses dialogs are difficult to use and counter-intuitive.
+On windows they are only ascii and still uses the unix backslash ! **/
+extern int tinyfd_allowCursesDialogs; /* 0 (default) or 1 */
+
+extern int tinyfd_forceConsole;  /* 0 (default) or 1 */
+/* for unix & windows: 0 (graphic mode) or 1 (console mode).
+0: try to use a graphic solution, if it fails then it uses console mode.
+1: forces all dialogs into console mode even when an X server is present.
+   if enabled, it can use the package Dialog or dialog.exe.
+   on windows it only make sense for console applications */
+
+extern int tinyfd_assumeGraphicDisplay; /* 0 (default) or 1  */
+/* some systems don't set the environment variable DISPLAY even when a graphic display is present.
+set this to 1 to tell tinyfiledialogs to assume the existence of a graphic display */
+
+extern char tinyfd_response[1024];
+/* if you pass "tinyfd_query" as aTitle,
+the functions will not display the dialogs
+but will return 0 for console mode, 1 for graphic mode.
+tinyfd_response is then filled with the retain solution.
+possible values for tinyfd_response are (all lowercase)
+for graphic mode:
+  windows_wchar windows applescript kdialog zenity zenity3 yad matedialog
+  shellementary qarma python2-tkinter python3-tkinter python-dbus
+  perl-dbus gxmessage gmessage xmessage xdialog gdialog dunst
+for console mode:
+  dialog whiptail basicinput no_solution */
+
+void tinyfd_beep(void);
+
+int tinyfd_notifyPopup(
+	char const * aTitle, /* NULL or "" */
+	char const * aMessage, /* NULL or "" may contain \n \t */
+	char const * aIconType); /* "info" "warning" "error" */
+		/* return has only meaning for tinyfd_query */
+
+int tinyfd_messageBox(
+	char const * aTitle , /* NULL or "" */
+	char const * aMessage , /* NULL or "" may contain \n \t */
+	char const * aDialogType , /* "ok" "okcancel" "yesno" "yesnocancel" */
+	char const * aIconType , /* "info" "warning" "error" "question" */
+	int aDefaultButton ) ;
+		/* 0 for cancel/no , 1 for ok/yes , 2 for no in yesnocancel */
+
+char * tinyfd_inputBox(
+	char const * aTitle , /* NULL or "" */
+	char const * aMessage , /* NULL or "" (\n and \t have no effect) */
+	char const * aDefaultInput ) ;  /* NULL = passwordBox, "" = inputbox */
+		/* returns NULL on cancel */
+
+char * tinyfd_saveFileDialog(
+	char const * aTitle , /* NULL or "" */
+	char const * aDefaultPathAndOrFile , /* NULL or "" , ends with / to set only a directory */
+	int aNumOfFilterPatterns , /* 0  (1 in the following example) */
+	char const * const * aFilterPatterns , /* NULL or char const * lFilterPatterns[1]={"*.txt"} */
+	char const * aSingleFilterDescription ) ; /* NULL or "text files" */
+		/* returns NULL on cancel */
+
+char * tinyfd_openFileDialog(
+	char const * aTitle, /* NULL or "" */
+	char const * aDefaultPathAndOrFile, /* NULL or "" , ends with / to set only a directory */
+	int aNumOfFilterPatterns , /* 0 (2 in the following example) */
+	char const * const * aFilterPatterns, /* NULL or char const * lFilterPatterns[2]={"*.png","*.jpg"}; */
+	char const * aSingleFilterDescription, /* NULL or "image files" */
+	int aAllowMultipleSelects ) ; /* 0 or 1 */
+		/* in case of multiple files, the separator is | */
+		/* returns NULL on cancel */
+
+char * tinyfd_selectFolderDialog(
+	char const * aTitle, /* NULL or "" */
+	char const * aDefaultPath); /* NULL or "" */
+		/* returns NULL on cancel */
+
+char * tinyfd_colorChooser(
+	char const * aTitle, /* NULL or "" */
+	char const * aDefaultHexRGB, /* NULL or "" or "#FF0000" */
+	unsigned char const aDefaultRGB[3] , /* unsigned char lDefaultRGB[3] = { 0 , 128 , 255 }; */
+	unsigned char aoResultRGB[3] ) ; /* unsigned char lResultRGB[3]; */
+		/* aDefaultRGB is used only if aDefaultHexRGB is absent */
+		/* aDefaultRGB and aoResultRGB can be the same array */
+		/* returns NULL on cancel */
+		/* returns the hexcolor as a string "#FF0000" */
+		/* aoResultRGB also contains the result */
+
+
+/************ WINDOWS ONLY SECTION ************************/
+#ifdef _WIN32
+
+/* windows only - utf-16 version */
+int tinyfd_notifyPopupW(
+	wchar_t const * aTitle, /* NULL or L"" */
+	wchar_t const * aMessage, /* NULL or L"" may contain \n \t */
+	wchar_t const * aIconType); /* L"info" L"warning" L"error" */
+
+/* windows only - utf-16 version */
+int tinyfd_messageBoxW(
+	wchar_t const * aTitle, /* NULL or L"" */
+	wchar_t const * aMessage, /* NULL or L"" may contain \n \t */
+	wchar_t const * aDialogType, /* L"ok" L"okcancel" L"yesno" */
+	wchar_t const * aIconType, /* L"info" L"warning" L"error" L"question" */
+	int aDefaultButton ); /* 0 for cancel/no , 1 for ok/yes */
+		/* returns 0 for cancel/no , 1 for ok/yes */
+
+/* windows only - utf-16 version */
+wchar_t * tinyfd_inputBoxW(
+	wchar_t const * aTitle, /* NULL or L"" */
+	wchar_t const * aMessage, /* NULL or L"" (\n nor \t not respected) */
+	wchar_t const * aDefaultInput); /* NULL passwordBox, L"" inputbox */
+
+/* windows only - utf-16 version */
+wchar_t * tinyfd_saveFileDialogW(
+	wchar_t const * aTitle, /* NULL or L"" */
+	wchar_t const * aDefaultPathAndOrFile, /* NULL or L"" , ends with / to set only a directory */
+	int aNumOfFilterPatterns, /* 0 (1 in the following example) */
+	wchar_t const * const * aFilterPatterns, /* NULL or wchar_t const * lFilterPatterns[1]={L"*.txt"} */
+	wchar_t const * aSingleFilterDescription); /* NULL or L"text files" */
+		/* returns NULL on cancel */
+
+/* windows only - utf-16 version */
+wchar_t * tinyfd_openFileDialogW(
+	wchar_t const * aTitle, /* NULL or L"" */
+	wchar_t const * aDefaultPathAndOrFile, /* NULL or L"" , ends with / to set only a directory */
+	int aNumOfFilterPatterns , /* 0 (2 in the following example) */
+	wchar_t const * const * aFilterPatterns, /* NULL or wchar_t const * lFilterPatterns[2]={L"*.png","*.jpg"} */
+	wchar_t const * aSingleFilterDescription, /* NULL or L"image files" */
+	int aAllowMultipleSelects ) ; /* 0 or 1 */
+		/* in case of multiple files, the separator is | */
+		/* returns NULL on cancel */
+
+/* windows only - utf-16 version */
+wchar_t * tinyfd_selectFolderDialogW(
+	wchar_t const * aTitle, /* NULL or L"" */
+	wchar_t const * aDefaultPath); /* NULL or L"" */
+		/* returns NULL on cancel */
+
+/* windows only - utf-16 version */
+wchar_t * tinyfd_colorChooserW(
+	wchar_t const * aTitle, /* NULL or L"" */
+	wchar_t const * aDefaultHexRGB, /* NULL or L"#FF0000" */
+	unsigned char const aDefaultRGB[3], /* unsigned char lDefaultRGB[3] = { 0 , 128 , 255 }; */
+	unsigned char aoResultRGB[3]); /* unsigned char lResultRGB[3]; */
+		/* returns the hexcolor as a string L"#FF0000" */
+		/* aoResultRGB also contains the result */
+		/* aDefaultRGB is used only if aDefaultHexRGB is NULL */
+		/* aDefaultRGB and aoResultRGB can be the same array */
+		/* returns NULL on cancel */
+
+#endif /*_WIN32 */
+
+#ifdef	__cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /* TINYFILEDIALOGS_H */
+
+/*
+ ________________________________________________________________________________
+|  ____________________________________________________________________________  |
+| |                                                                            | |
+| | on windows:                                                                | |
+| |  - for UTF-16, use the wchar_t functions at the bottom of the header file  | |
+| |  - _wfopen() requires wchar_t                                              | |
+| |                                                                            | |
+| |  - in tinyfiledialogs, char is UTF-8 by default (since v3.6)               | |
+| |  - but fopen() expects MBCS (not UTF-8)                                    | |
+| |  - if you want char to be MBCS: set tinyfd_winUtf8 to 0                    | |
+| |                                                                            | |
+| |  - alternatively, tinyfiledialogs provides                                 | |
+| |                        functions to convert between UTF-8, UTF-16 and MBCS | |
+| |____________________________________________________________________________| |
+|________________________________________________________________________________|
+
+- This is not for ios nor android (it works in termux though).
+- The files can be renamed with extension ".cpp" as the code is 100% compatible C C++
+  (just comment out << extern "C" >> in the header file)
+- Windows is fully supported from XP to 10 (maybe even older versions)
+- C# & LUA via dll, see files in the folder EXTRAS
+- OSX supported from 10.4 to latest (maybe even older versions)
+- Do not use " and ' as the dialogs will be displayed with a warning
+  instead of the title, message, etc...
+- There's one file filter only, it may contain several patterns.
+- If no filter description is provided,
+  the list of patterns will become the description.
+- On windows link against Comdlg32.lib and Ole32.lib
+  (on windows the no linking claim is a lie)
+- On unix: it tries command line calls, so no such need (NO LINKING).
+- On unix you need one of the following:
+  applescript, kdialog, zenity, matedialog, shellementary, qarma, yad,
+  python (2 or 3)/tkinter/python-dbus (optional), Xdialog
+  or curses dialogs (opens terminal if running without console).
+- One of those is already included on most (if not all) desktops.
+- In the absence of those it will use gdialog, gxmessage or whiptail
+  with a textinputbox. If nothing is found, it switches to basic console input,
+  it opens a console if needed (requires xterm + bash).
+- for curses dialogs you must set tinyfd_allowCursesDialogs=1
+- You can query the type of dialog that will be used (pass "tinyfd_query" as aTitle)
+- String memory is preallocated statically for all the returned values.
+- File and path names are tested before return, they should be valid.
+- tinyfd_forceConsole=1; at run time, forces dialogs into console mode.
+- On windows, console mode only make sense for console applications.
+- On windows, console mode is not implemented for wchar_T UTF-16.
+- Mutiple selects are not possible in console mode.
+- The package dialog must be installed to run in curses dialogs in console mode.
+  It is already installed on most unix systems.
+- On osx, the package dialog can be installed via
+  http://macappstore.org/dialog or http://macports.org
+- On windows, for curses dialogs console mode,
+  dialog.exe should be copied somewhere on your executable path.
+  It can be found at the bottom of the following page:
+  http://andrear.altervista.org/home/cdialog.php
+*/

main.c

@@ -0,0 +1,41 @@
+#include "cli.h"
+#include <SDL2/SDL.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include "ui.h"
+
+int main(int argc, char **argv) {
+    CLIArgs args;
+    UIContext *ui;
+    int status;
+    bool running = false;
+
+    if (parseCLIArgs(argc, argv, &args)) {
+        return 1;
+    }
+
+    SDL_SetHint(SDL_HINT_VIDEO_HIGHDPI_DISABLED, "0");
+    SDL_SetHint(SDL_HINT_WINDOWS_DPI_AWARENESS, "system");
+    if (SDL_Init(SDL_INIT_EVERYTHING)) {
+        fprintf(stderr, "Error initializing SDL: %s\n", SDL_GetError());
+        return 1;
+    }
+
+    ui = uiInit();
+    if (!ui) {
+        SDL_Quit();
+        return 1;
+    }
+
+    if (args.filename) {
+        if (uiLoadGame(ui, args.filename)) {
+            return 1;
+        }
+        running = true;
+    }
+
+    status = uiRun(ui, running);
+    uiDestroy(ui);
+    SDL_Quit();
+    return status;
+}

makefile

@@ -0,0 +1,54 @@
+CC?=gcc
+LD?=ld
+msys_version := $(if $(findstring Msys, $(shell uname -o)),$(word 1, $(subst ., ,$(shell uname -r))),0)
+
+ifeq ($(msys_version), 0)
+PKGFLAGS=$(shell pkg-config sdl2 --cflags --libs)
+BINLINKFLAGS=-z noexecstack
+else
+PKGFLAGS=$(shell pkg-config sdl2 --cflags --libs) -mwindows -mconsole -lcomdlg32 -lole32
+BINLINKFLAGS=
+endif
+
+.PHONY: clean build
+clean:
+	@rm -rf shrooms-vb output
+
+CFILES := $(foreach dir,./,$(notdir $(wildcard $(dir)/*.c)))
+BINFILES := $(foreach dir,assets/,$(notdir $(wildcard $(dir)/*.bin)))
+
+COBJS := $(CFILES:%.c=output/%.o)
+EXTOBJS = output/vb.o output/tinyfiledialogs.o
+BINOBJS := $(BINFILES:%.bin=output/%.o)
+
+OFILES := $(COBJS) $(EXTOBJS) $(BINOBJS)
+
+output/%.o: %.c
+	@mkdir -p output
+	@$(CC) -c -o $@ $< -I . \
+		-I shrooms-vb-core/core $(PKGFLAGS) \
+		-O3 -flto=auto -Wno-long-long \
+		-Werror -std=c90 -Wall -Wextra -Wpedantic
+
+output/vb.o: shrooms-vb-core/core/vb.c
+	@mkdir -p output
+	@$(CC) -c -o $@ $< -I . \
+		-I shrooms-vb-core/core \
+		-O3 -flto=auto -fno-strict-aliasing \
+		-Werror -std=c90 -Wall -Wextra -Wpedantic
+
+output/tinyfiledialogs.o: external/tinyfiledialogs.c
+	@mkdir -p output
+	@$(CC) -c -o $@ $< -I . \
+		-I external \
+		-O3 -flto=auto -fno-strict-aliasing -Wno-cast-function-type \
+		-Werror -std=c90 -Wall -Wextra -Wpedantic
+
+output/%.o: assets/%.bin
+	@mkdir -p output
+	@$(LD) -r -b binary $(BINLINKFLAGS) -o $@ $<
+
+shrooms-vb: $(OFILES)
+	@$(CC) -o $@ $(OFILES) $(PKGFLAGS) -lm -flto=auto
+
+build: shrooms-vb

nuklear.c

@@ -0,0 +1,3 @@
+#define NK_IMPLEMENTATION
+#define NK_SDL_RENDERER_IMPLEMENTATION
+#include "nuklear.h"

nuklear.h

@@ -0,0 +1,17 @@
+#ifndef SHROOMS_VB_NATIVE_NUKLEAR_
+#define SHROOMS_VB_NATIVE_NUKLEAR_
+
+#define NK_INCLUDE_FIXED_TYPES
+#define NK_INCLUDE_STANDARD_BOOL
+#define NK_INCLUDE_STANDARD_IO
+#define NK_INCLUDE_STANDARD_VARARGS
+#define NK_INCLUDE_DEFAULT_ALLOCATOR
+#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
+#define NK_INCLUDE_FONT_BAKING
+#define NK_INCLUDE_DEFAULT_FONT
+#include "external/nuklear.h"
+
+#define NK_SDL_RENDERER_SDL_H <SDL2/SDL.h>
+#include "external/nuklear_sdl_renderer.h"
+
+#endif

src/anaglyph.wgsl

@@ -1,55 +0,0 @@
-// Vertex shader
-
-struct VertexOutput {
-    @builtin(position) clip_position: vec4<f32>,
-    @location(0) tex_coords: vec2<f32>,
-};
-
-@vertex
-fn vs_main(
-    @builtin(vertex_index) in_vertex_index: u32,
-) -> VertexOutput {
-    var out: VertexOutput;
-    var x: f32;
-    var y: f32;
-    switch in_vertex_index {
-        case 0u, 3u: {
-            x = -1.0;
-            y = 1.0;
-        }
-        case 1u: {
-            x = -1.0;
-            y = -1.0;
-        }
-        case 2u, 4u: {
-            x = 1.0;
-            y = -1.0;
-        }
-        default: {
-            x = 1.0;
-            y = 1.0;
-        }
-    }
-    out.clip_position = vec4<f32>(x, y, 0.0, 1.0);
-    out.tex_coords = vec2<f32>((x + 1.0) / 2.0, (1.0 - y) / 2.0);
-    return out;
-}
-
-// Fragment shader
-@group(0) @binding(0)
-var u_texture: texture_2d<f32>;
-@group(0) @binding(1)
-var u_sampler: sampler;
-
-struct Colors {
-    left: vec4<f32>,
-    right: vec4<f32>,
-};
-@group(0) @binding(2)
-var<uniform> colors: Colors;
-
-@fragment
-fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
-    let brt = textureSample(u_texture, u_sampler, in.tex_coords);
-    return colors.left * brt[0] + colors.right * brt[1];
-}

src/app.rs

@@ -1,131 +0,0 @@
-use std::{
-    collections::HashMap,
-    fmt::Debug,
-    sync::{Arc, RwLock},
-};
-
-use game::GameWindow;
-use winit::{
-    application::ApplicationHandler,
-    event::{Event, WindowEvent},
-    event_loop::{ActiveEventLoop, EventLoopProxy},
-    window::WindowId,
-};
-
-use crate::{
-    controller::ControllerState,
-    emulator::{EmulatorClient, EmulatorCommand},
-    input::InputMapper,
-};
-
-mod common;
-mod game;
-mod input;
-
-pub struct App {
-    windows: HashMap<WindowId, Box<dyn AppWindow>>,
-    client: EmulatorClient,
-    input_mapper: Arc<RwLock<InputMapper>>,
-    controller: ControllerState,
-    proxy: EventLoopProxy<UserEvent>,
-}
-
-impl App {
-    pub fn new(client: EmulatorClient, proxy: EventLoopProxy<UserEvent>) -> Self {
-        let input_mapper = Arc::new(RwLock::new(InputMapper::new()));
-        let controller = ControllerState::new(input_mapper.clone());
-        Self {
-            windows: HashMap::new(),
-            client,
-            input_mapper,
-            controller,
-            proxy,
-        }
-    }
-}
-
-impl ApplicationHandler<UserEvent> for App {
-    fn resumed(&mut self, event_loop: &ActiveEventLoop) {
-        let mut window = GameWindow::new(
-            event_loop,
-            self.client.clone(),
-            self.input_mapper.clone(),
-            self.proxy.clone(),
-        );
-        window.init();
-        self.windows.insert(window.id(), Box::new(window));
-    }
-
-    fn window_event(
-        &mut self,
-        event_loop: &ActiveEventLoop,
-        window_id: WindowId,
-        event: WindowEvent,
-    ) {
-        if let WindowEvent::KeyboardInput { event, .. } = &event {
-            if self.controller.key_event(event) {
-                self.client
-                    .send_command(EmulatorCommand::SetKeys(self.controller.pressed()));
-            }
-        }
-        let Some(window) = self.windows.get_mut(&window_id) else {
-            return;
-        };
-        window.handle_event(event_loop, &Event::WindowEvent { window_id, event });
-    }
-
-    fn user_event(&mut self, _event_loop: &ActiveEventLoop, event: UserEvent) {
-        match event {
-            UserEvent::OpenWindow(mut window) => {
-                window.init();
-                self.windows.insert(window.id(), window);
-            }
-            UserEvent::CloseWindow(window_id) => {
-                self.windows.remove(&window_id);
-            }
-        }
-    }
-
-    fn device_event(
-        &mut self,
-        event_loop: &ActiveEventLoop,
-        device_id: winit::event::DeviceId,
-        event: winit::event::DeviceEvent,
-    ) {
-        for window in self.windows.values_mut() {
-            window.handle_event(
-                event_loop,
-                &Event::DeviceEvent {
-                    device_id,
-                    event: event.clone(),
-                },
-            );
-        }
-    }
-
-    fn about_to_wait(&mut self, event_loop: &ActiveEventLoop) {
-        for window in self.windows.values_mut() {
-            window.handle_event(event_loop, &Event::AboutToWait);
-        }
-    }
-}
-
-pub trait AppWindow {
-    fn id(&self) -> WindowId;
-    fn init(&mut self);
-    fn handle_event(&mut self, event_loop: &ActiveEventLoop, event: &Event<UserEvent>);
-}
-
-pub enum UserEvent {
-    OpenWindow(Box<dyn AppWindow>),
-    CloseWindow(WindowId),
-}
-
-impl Debug for UserEvent {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match self {
-            Self::OpenWindow(window) => f.debug_tuple("OpenWindow").field(&window.id()).finish(),
-            Self::CloseWindow(window_id) => f.debug_tuple("CloseWindow").field(window_id).finish(),
-        }
-    }
-}

src/app/common.rs

@@ -1,264 +0,0 @@
-use std::{
-    ops::{Deref, DerefMut},
-    sync::Arc,
-    time::Instant,
-};
-
-use imgui::{FontSource, MouseCursor, SuspendedContext, WindowToken};
-use imgui_wgpu::{Renderer, RendererConfig};
-use imgui_winit_support::WinitPlatform;
-use pollster::block_on;
-#[cfg(target_os = "windows")]
-use winit::platform::windows::{CornerPreference, WindowAttributesExtWindows as _};
-use winit::{
-    dpi::{LogicalSize, PhysicalSize, Size},
-    event_loop::ActiveEventLoop,
-    window::{Window, WindowAttributes},
-};
-
-pub struct WindowStateBuilder<'a> {
-    event_loop: &'a ActiveEventLoop,
-    attributes: WindowAttributes,
-}
-impl<'a> WindowStateBuilder<'a> {
-    pub fn new(event_loop: &'a ActiveEventLoop) -> Self {
-        let attributes = Window::default_attributes();
-        #[cfg(target_os = "windows")]
-        let attributes = attributes.with_corner_preference(CornerPreference::DoNotRound);
-        Self {
-            event_loop,
-            attributes,
-        }
-    }
-
-    pub fn with_title<T: Into<String>>(self, title: T) -> Self {
-        Self {
-            attributes: self.attributes.with_title(title),
-            ..self
-        }
-    }
-
-    pub fn with_inner_size<S: Into<Size>>(self, size: S) -> Self {
-        Self {
-            attributes: self.attributes.with_inner_size(size),
-            ..self
-        }
-    }
-
-    pub fn build(self) -> WindowState {
-        WindowState::new(self.event_loop, self.attributes)
-    }
-}
-
-#[derive(Debug)]
-pub struct WindowState {
-    pub device: wgpu::Device,
-    pub queue: Arc<wgpu::Queue>,
-    pub window: Arc<Window>,
-    pub surface_desc: wgpu::SurfaceConfiguration,
-    pub surface: wgpu::Surface<'static>,
-    pub hidpi_factor: f64,
-    pub minimized: bool,
-}
-
-impl WindowState {
-    fn new(event_loop: &ActiveEventLoop, attributes: WindowAttributes) -> Self {
-        let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
-            backends: wgpu::Backends::PRIMARY,
-            ..Default::default()
-        });
-
-        let window = Arc::new(event_loop.create_window(attributes).unwrap());
-
-        let size = window.inner_size();
-        let hidpi_factor = window.scale_factor();
-        let surface = instance.create_surface(window.clone()).unwrap();
-
-        let adapter = block_on(instance.request_adapter(&wgpu::RequestAdapterOptions {
-            power_preference: wgpu::PowerPreference::HighPerformance,
-            compatible_surface: Some(&surface),
-            force_fallback_adapter: false,
-        }))
-        .unwrap();
-
-        let (device, queue) =
-            block_on(adapter.request_device(&wgpu::DeviceDescriptor::default(), None)).unwrap();
-        let queue = Arc::new(queue);
-
-        // Set up swap chain
-        let surface_desc = wgpu::SurfaceConfiguration {
-            usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
-            format: wgpu::TextureFormat::Bgra8UnormSrgb,
-            width: size.width,
-            height: size.height,
-            present_mode: wgpu::PresentMode::Fifo,
-            desired_maximum_frame_latency: 2,
-            alpha_mode: wgpu::CompositeAlphaMode::Auto,
-            view_formats: vec![wgpu::TextureFormat::Bgra8Unorm],
-        };
-
-        surface.configure(&device, &surface_desc);
-
-        Self {
-            device,
-            queue,
-            window,
-            surface_desc,
-            surface,
-            hidpi_factor,
-            minimized: false,
-        }
-    }
-
-    pub fn logical_size(&self) -> LogicalSize<u32> {
-        PhysicalSize::new(self.surface_desc.width, self.surface_desc.height)
-            .to_logical(self.hidpi_factor)
-    }
-
-    pub fn handle_resize(&mut self, size: &PhysicalSize<u32>) {
-        if size.width > 0 && size.height > 0 {
-            self.minimized = false;
-            self.surface_desc.width = size.width;
-            self.surface_desc.height = size.height;
-            self.surface.configure(&self.device, &self.surface_desc);
-        } else {
-            self.minimized = true;
-        }
-    }
-}
-
-pub struct ImguiState {
-    pub context: ContextGuard,
-    pub platform: WinitPlatform,
-    pub renderer: Renderer,
-    pub clear_color: wgpu::Color,
-    pub last_frame: Instant,
-    pub last_cursor: Option<MouseCursor>,
-}
-impl ImguiState {
-    pub fn new(window: &WindowState) -> Self {
-        let mut context_guard = ContextGuard::new();
-        let mut context = context_guard.lock().unwrap();
-
-        let mut platform = imgui_winit_support::WinitPlatform::new(&mut context);
-        platform.attach_window(
-            context.io_mut(),
-            &window.window,
-            imgui_winit_support::HiDpiMode::Default,
-        );
-        context.set_ini_filename(None);
-
-        let font_size = (16.0 * window.hidpi_factor) as f32;
-        context.io_mut().font_global_scale = (1.0 / window.hidpi_factor) as f32;
-
-        context.fonts().add_font(&[FontSource::TtfData {
-            data: include_bytes!("../../assets/selawk.ttf"),
-            size_pixels: font_size,
-            config: Some(imgui::FontConfig {
-                oversample_h: 1,
-                pixel_snap_h: true,
-                size_pixels: font_size,
-                ..Default::default()
-            }),
-        }]);
-
-        let style = context.style_mut();
-        style.use_light_colors();
-
-        //
-        // Set up dear imgui wgpu renderer
-        //
-        let renderer_config = RendererConfig {
-            texture_format: window.surface_desc.format,
-            ..Default::default()
-        };
-
-        let renderer = Renderer::new(&mut context, &window.device, &window.queue, renderer_config);
-
-        let last_frame = Instant::now();
-        let last_cursor = None;
-
-        drop(context);
-        Self {
-            context: context_guard,
-            platform,
-            renderer,
-            clear_color: wgpu::Color::BLACK,
-            last_frame,
-            last_cursor,
-        }
-    }
-}
-
-pub struct ContextGuard {
-    value: Option<SuspendedContext>,
-}
-
-impl ContextGuard {
-    fn new() -> Self {
-        Self {
-            value: Some(SuspendedContext::create()),
-        }
-    }
-
-    pub fn lock(&mut self) -> Option<ContextLock<'_>> {
-        let sus = self.value.take()?;
-        match sus.activate() {
-            Ok(ctx) => Some(ContextLock {
-                ctx: Some(ctx),
-                holder: self,
-            }),
-            Err(sus) => {
-                self.value = Some(sus);
-                None
-            }
-        }
-    }
-}
-
-pub struct ContextLock<'a> {
-    ctx: Option<imgui::Context>,
-    holder: &'a mut ContextGuard,
-}
-
-impl<'a> Deref for ContextLock<'a> {
-    type Target = imgui::Context;
-    fn deref(&self) -> &Self::Target {
-        self.ctx.as_ref().unwrap()
-    }
-}
-
-impl<'a> DerefMut for ContextLock<'a> {
-    fn deref_mut(&mut self) -> &mut Self::Target {
-        self.ctx.as_mut().unwrap()
-    }
-}
-
-impl<'a> Drop for ContextLock<'a> {
-    fn drop(&mut self) {
-        self.holder.value = self.ctx.take().map(|c| c.suspend())
-    }
-}
-
-pub trait UiExt {
-    fn fullscreen_window(&self) -> Option<WindowToken<'_>>;
-    fn right_align_text<T: AsRef<str>>(&self, text: T, space: f32);
-}
-
-impl UiExt for imgui::Ui {
-    fn fullscreen_window(&self) -> Option<WindowToken<'_>> {
-        self.window("fullscreen")
-            .position([0.0, 0.0], imgui::Condition::Always)
-            .size(self.io().display_size, imgui::Condition::Always)
-            .flags(imgui::WindowFlags::NO_DECORATION)
-            .begin()
-    }
-
-    fn right_align_text<T: AsRef<str>>(&self, text: T, space: f32) {
-        let width = self.calc_text_size(text.as_ref())[0];
-        let [left, y] = self.cursor_pos();
-        let right = left + space;
-        self.set_cursor_pos([right - width, y]);
-        self.text(text);
-    }
-}

src/app/game.rs

@@ -1,384 +0,0 @@
-use std::{
-    sync::{Arc, RwLock},
-    time::Instant,
-};
-use wgpu::util::DeviceExt as _;
-use winit::{
-    dpi::LogicalSize,
-    event::{Event, WindowEvent},
-    event_loop::{ActiveEventLoop, EventLoopProxy},
-    window::WindowId,
-};
-
-use crate::{
-    emulator::{EmulatorClient, EmulatorCommand},
-    input::InputMapper,
-    renderer::GameRenderer,
-};
-
-use super::{
-    common::{ImguiState, WindowState, WindowStateBuilder},
-    input::InputWindow,
-    AppWindow, UserEvent,
-};
-
-pub struct GameWindow {
-    window: WindowState,
-    imgui: Option<ImguiState>,
-    pipeline: wgpu::RenderPipeline,
-    bind_group: wgpu::BindGroup,
-    client: EmulatorClient,
-    input_mapper: Arc<RwLock<InputMapper>>,
-    proxy: EventLoopProxy<UserEvent>,
-    paused_due_to_minimize: bool,
-}
-
-impl GameWindow {
-    pub fn new(
-        event_loop: &ActiveEventLoop,
-        client: EmulatorClient,
-        input_mapper: Arc<RwLock<InputMapper>>,
-        proxy: EventLoopProxy<UserEvent>,
-    ) -> Self {
-        let window = WindowStateBuilder::new(event_loop)
-            .with_title("Shrooms VB")
-            .with_inner_size(LogicalSize::new(384, 244))
-            .build();
-        let device = &window.device;
-
-        let eyes = Arc::new(GameRenderer::create_texture(device, "eye"));
-        client.send_command(EmulatorCommand::SetRenderer(GameRenderer {
-            queue: window.queue.clone(),
-            eyes: eyes.clone(),
-        }));
-        let eyes = eyes.create_view(&wgpu::TextureViewDescriptor::default());
-        let sampler = device.create_sampler(&wgpu::SamplerDescriptor::default());
-        let colors = Colors {
-            left: [1.0, 0.0, 0.0, 1.0],
-            right: [0.0, 0.7734375, 0.9375, 1.0],
-        };
-        let color_buf = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
-            label: Some("colors"),
-            contents: bytemuck::bytes_of(&colors),
-            usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
-        });
-        let texture_bind_group_layout =
-            device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
-                label: Some("texture bind group layout"),
-                entries: &[
-                    wgpu::BindGroupLayoutEntry {
-                        binding: 0,
-                        visibility: wgpu::ShaderStages::FRAGMENT,
-                        ty: wgpu::BindingType::Texture {
-                            sample_type: wgpu::TextureSampleType::Float { filterable: true },
-                            view_dimension: wgpu::TextureViewDimension::D2,
-                            multisampled: false,
-                        },
-                        count: None,
-                    },
-                    wgpu::BindGroupLayoutEntry {
-                        binding: 1,
-                        visibility: wgpu::ShaderStages::FRAGMENT,
-                        ty: wgpu::BindingType::Sampler(wgpu::SamplerBindingType::Filtering),
-                        count: None,
-                    },
-                    wgpu::BindGroupLayoutEntry {
-                        binding: 2,
-                        visibility: wgpu::ShaderStages::FRAGMENT,
-                        ty: wgpu::BindingType::Buffer {
-                            ty: wgpu::BufferBindingType::Uniform,
-                            has_dynamic_offset: false,
-                            min_binding_size: None,
-                        },
-                        count: None,
-                    },
-                ],
-            });
-        let bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
-            label: Some("bind group"),
-            layout: &texture_bind_group_layout,
-            entries: &[
-                wgpu::BindGroupEntry {
-                    binding: 0,
-                    resource: wgpu::BindingResource::TextureView(&eyes),
-                },
-                wgpu::BindGroupEntry {
-                    binding: 1,
-                    resource: wgpu::BindingResource::Sampler(&sampler),
-                },
-                wgpu::BindGroupEntry {
-                    binding: 2,
-                    resource: color_buf.as_entire_binding(),
-                },
-            ],
-        });
-
-        let shader = device.create_shader_module(wgpu::include_wgsl!("../anaglyph.wgsl"));
-        let render_pipeline_layout =
-            device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
-                label: Some("render pipeline layout"),
-                bind_group_layouts: &[&texture_bind_group_layout],
-                push_constant_ranges: &[],
-            });
-        let render_pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
-            label: Some("render pipeline"),
-            layout: Some(&render_pipeline_layout),
-            vertex: wgpu::VertexState {
-                module: &shader,
-                entry_point: "vs_main",
-                buffers: &[],
-                compilation_options: wgpu::PipelineCompilationOptions::default(),
-            },
-            fragment: Some(wgpu::FragmentState {
-                module: &shader,
-                entry_point: "fs_main",
-                targets: &[Some(wgpu::ColorTargetState {
-                    format: wgpu::TextureFormat::Bgra8UnormSrgb,
-                    blend: Some(wgpu::BlendState::REPLACE),
-                    write_mask: wgpu::ColorWrites::ALL,
-                })],
-                compilation_options: wgpu::PipelineCompilationOptions::default(),
-            }),
-            primitive: wgpu::PrimitiveState {
-                topology: wgpu::PrimitiveTopology::TriangleList,
-                strip_index_format: None,
-                front_face: wgpu::FrontFace::Ccw,
-                cull_mode: Some(wgpu::Face::Back),
-                polygon_mode: wgpu::PolygonMode::Fill,
-                unclipped_depth: false,
-                conservative: false,
-            },
-            depth_stencil: None,
-            multisample: wgpu::MultisampleState {
-                count: 1,
-                mask: !0,
-                alpha_to_coverage_enabled: false,
-            },
-            multiview: None,
-            cache: None,
-        });
-
-        Self {
-            window,
-            imgui: None,
-            pipeline: render_pipeline,
-            bind_group,
-            client,
-            input_mapper,
-            proxy,
-            paused_due_to_minimize: false,
-        }
-    }
-
-    fn draw(&mut self, event_loop: &ActiveEventLoop) {
-        let window = &mut self.window;
-        let imgui = self.imgui.as_mut().unwrap();
-        let mut context = imgui.context.lock().unwrap();
-        let mut new_size = None;
-
-        let now = Instant::now();
-        context.io_mut().update_delta_time(now - imgui.last_frame);
-        imgui.last_frame = now;
-
-        let frame = match window.surface.get_current_texture() {
-            Ok(frame) => frame,
-            Err(e) => {
-                if !self.window.minimized {
-                    eprintln!("dropped frame: {e:?}");
-                }
-                return;
-            }
-        };
-        imgui
-            .platform
-            .prepare_frame(context.io_mut(), &window.window)
-            .expect("Failed to prepare frame");
-        let ui = context.new_frame();
-        let mut menu_height = 0.0;
-        ui.main_menu_bar(|| {
-            menu_height = ui.window_size()[1];
-            ui.menu("ROM", || {
-                if ui.menu_item("Open ROM") {
-                    let rom = native_dialog::FileDialog::new()
-                        .add_filter("Virtual Boy ROMs", &["vb", "vbrom"])
-                        .show_open_single_file()
-                        .unwrap();
-                    if let Some(path) = rom {
-                        self.client.send_command(EmulatorCommand::LoadGame(path));
-                    }
-                }
-                if ui.menu_item("Quit") {
-                    event_loop.exit();
-                }
-            });
-            ui.menu("Emulation", || {
-                let has_game = self.client.has_game();
-                if self.client.is_running() {
-                    if ui.menu_item_config("Pause").enabled(has_game).build() {
-                        self.client.send_command(EmulatorCommand::Pause);
-                    }
-                } else if ui.menu_item_config("Resume").enabled(has_game).build() {
-                    self.client.send_command(EmulatorCommand::Resume);
-                }
-                if ui.menu_item_config("Reset").enabled(has_game).build() {
-                    self.client.send_command(EmulatorCommand::Reset);
-                }
-            });
-            ui.menu("Video", || {
-                let current_dims = window.logical_size();
-                for scale in 1..=4 {
-                    let label = format!("x{scale}");
-                    let dims = LogicalSize::new(384 * scale, 224 * scale + 20);
-                    let selected = dims == current_dims;
-                    if ui.menu_item_config(label).selected(selected).build() {
-                        if let Some(size) = window.window.request_inner_size(dims) {
-                            window.handle_resize(&size);
-                            new_size = Some(size);
-                        }
-                    }
-                }
-            });
-            ui.menu("Input", || {
-                if ui.menu_item("Bind Inputs") {
-                    let input_window = Box::new(InputWindow::new(
-                        event_loop,
-                        self.input_mapper.clone(),
-                        self.proxy.clone(),
-                    ));
-                    self.proxy
-                        .send_event(UserEvent::OpenWindow(input_window))
-                        .unwrap();
-                }
-            });
-        });
-
-        let mut encoder: wgpu::CommandEncoder = window
-            .device
-            .create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
-
-        if imgui.last_cursor != ui.mouse_cursor() {
-            imgui.last_cursor = ui.mouse_cursor();
-            imgui.platform.prepare_render(ui, &window.window);
-        }
-
-        let view = frame
-            .texture
-            .create_view(&wgpu::TextureViewDescriptor::default());
-        let mut rpass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
-            label: None,
-            color_attachments: &[Some(wgpu::RenderPassColorAttachment {
-                view: &view,
-                resolve_target: None,
-                ops: wgpu::Operations {
-                    load: wgpu::LoadOp::Clear(imgui.clear_color),
-                    store: wgpu::StoreOp::Store,
-                },
-            })],
-            depth_stencil_attachment: None,
-            timestamp_writes: None,
-            occlusion_query_set: None,
-        });
-
-        // Draw the game
-        rpass.set_pipeline(&self.pipeline);
-        let window_width = window.surface_desc.width as f32;
-        let window_height = window.surface_desc.height as f32;
-        let menu_height = menu_height * window.hidpi_factor as f32;
-        let ((x, y), (width, height)) =
-            compute_game_bounds(window_width, window_height, menu_height);
-        rpass.set_viewport(x, y, width, height, 0.0, 1.0);
-        rpass.set_bind_group(0, &self.bind_group, &[]);
-        rpass.draw(0..6, 0..1);
-
-        // Draw the menu on top of the game
-        rpass.set_viewport(0.0, 0.0, window_width, window_height, 0.0, 1.0);
-        imgui
-            .renderer
-            .render(context.render(), &window.queue, &window.device, &mut rpass)
-            .expect("Rendering failed");
-
-        drop(rpass);
-
-        if let Some(size) = new_size {
-            imgui.platform.handle_event::<UserEvent>(
-                context.io_mut(),
-                &window.window,
-                &Event::WindowEvent {
-                    window_id: window.window.id(),
-                    event: WindowEvent::Resized(size),
-                },
-            );
-        }
-
-        window.queue.submit(Some(encoder.finish()));
-
-        frame.present();
-    }
-}
-
-impl AppWindow for GameWindow {
-    fn id(&self) -> WindowId {
-        self.window.window.id()
-    }
-
-    fn init(&mut self) {
-        self.imgui = Some(ImguiState::new(&self.window));
-        self.window.window.request_redraw();
-    }
-
-    fn handle_event(&mut self, event_loop: &ActiveEventLoop, event: &Event<UserEvent>) {
-        match event {
-            Event::WindowEvent { event, .. } => match event {
-                WindowEvent::Resized(size) => {
-                    self.window.handle_resize(size);
-                    if self.window.minimized {
-                        if self.client.is_running() {
-                            self.client.send_command(EmulatorCommand::Pause);
-                            self.paused_due_to_minimize = true;
-                        }
-                    } else if self.paused_due_to_minimize {
-                        self.client.send_command(EmulatorCommand::Resume);
-                        self.paused_due_to_minimize = false;
-                    }
-                }
-                WindowEvent::CloseRequested => event_loop.exit(),
-                WindowEvent::RedrawRequested => self.draw(event_loop),
-                _ => (),
-            },
-            Event::AboutToWait => {
-                self.window.window.request_redraw();
-            }
-            _ => (),
-        }
-        let window = &self.window;
-        let Some(imgui) = self.imgui.as_mut() else {
-            return;
-        };
-        let mut context = imgui.context.lock().unwrap();
-        imgui
-            .platform
-            .handle_event(context.io_mut(), &window.window, event);
-    }
-}
-
-fn compute_game_bounds(
-    window_width: f32,
-    window_height: f32,
-    menu_height: f32,
-) -> ((f32, f32), (f32, f32)) {
-    let available_width = window_width;
-    let available_height = window_height - menu_height;
-
-    let width = available_width.min(available_height * 384.0 / 224.0);
-    let height = available_height.min(available_width * 224.0 / 384.0);
-    let x = (available_width - width) / 2.0;
-    let y = menu_height + (available_height - height) / 2.0;
-    ((x, y), (width, height))
-}
-
-#[derive(Clone, Copy, bytemuck::Pod, bytemuck::Zeroable)]
-#[repr(C)]
-struct Colors {
-    left: [f32; 4],
-    right: [f32; 4],
-}

src/app/input.rs

@@ -1,223 +0,0 @@
-use std::{
-    sync::{Arc, RwLock},
-    time::Instant,
-};
-
-use winit::{
-    dpi::LogicalSize,
-    event::{Event, KeyEvent, WindowEvent},
-    event_loop::{ActiveEventLoop, EventLoopProxy},
-    platform::modifier_supplement::KeyEventExtModifierSupplement,
-};
-
-use crate::{input::InputMapper, shrooms_vb_core::VBKey};
-
-use super::{
-    common::{ImguiState, UiExt, WindowState, WindowStateBuilder},
-    AppWindow, UserEvent,
-};
-
-pub struct InputWindow {
-    window: WindowState,
-    imgui: Option<ImguiState>,
-    input_mapper: Arc<RwLock<InputMapper>>,
-    proxy: EventLoopProxy<UserEvent>,
-    now_binding: Option<VBKey>,
-}
-
-const KEY_NAMES: [(VBKey, &str); 14] = [
-    (VBKey::LU, "Up"),
-    (VBKey::LD, "Down"),
-    (VBKey::LL, "Left"),
-    (VBKey::LR, "Right"),
-    (VBKey::SEL, "Select"),
-    (VBKey::STA, "Start"),
-    (VBKey::B, "B"),
-    (VBKey::A, "A"),
-    (VBKey::LT, "L-Trigger"),
-    (VBKey::RT, "R-Trigger"),
-    (VBKey::RU, "R-Up"),
-    (VBKey::RD, "R-Down"),
-    (VBKey::RL, "R-Left"),
-    (VBKey::RR, "R-Right"),
-];
-
-impl InputWindow {
-    pub fn new(
-        event_loop: &ActiveEventLoop,
-        input_mapper: Arc<RwLock<InputMapper>>,
-        proxy: EventLoopProxy<UserEvent>,
-    ) -> Self {
-        let window = WindowStateBuilder::new(event_loop)
-            .with_title("Bind Inputs")
-            .with_inner_size(LogicalSize::new(600, 400))
-            .build();
-        Self {
-            window,
-            imgui: None,
-            input_mapper,
-            now_binding: None,
-            proxy,
-        }
-    }
-
-    fn draw(&mut self) {
-        let window = &mut self.window;
-        let imgui = self.imgui.as_mut().unwrap();
-        let mut context = imgui.context.lock().unwrap();
-
-        let now = Instant::now();
-        context.io_mut().update_delta_time(now - imgui.last_frame);
-        imgui.last_frame = now;
-
-        let frame = match window.surface.get_current_texture() {
-            Ok(frame) => frame,
-            Err(e) => {
-                if !self.window.minimized {
-                    eprintln!("dropped frame: {e:?}");
-                }
-                return;
-            }
-        };
-        imgui
-            .platform
-            .prepare_frame(context.io_mut(), &window.window)
-            .expect("Failed to prepare frame");
-        let ui = context.new_frame();
-
-        let mut render_key_bindings = || {
-            if let Some(table) = ui.begin_table("controls", 2) {
-                let binding_names = {
-                    let mapper = self.input_mapper.read().unwrap();
-                    mapper.binding_names()
-                };
-                ui.table_next_row();
-
-                for (key, name) in KEY_NAMES {
-                    let binding = binding_names.get(&key).map(|s| s.as_str());
-                    ui.table_next_column();
-                    let [space, _] = ui.content_region_avail();
-                    ui.group(|| {
-                        ui.right_align_text(name, space * 0.20);
-                        ui.same_line();
-                        let label_text = if self.now_binding == Some(key) {
-                            "Press any input"
-                        } else {
-                            binding.unwrap_or("")
-                        };
-                        let label = format!("{}##{}", label_text, name);
-                        if ui.button_with_size(label, [space * 0.60, 0.0]) {
-                            self.now_binding = Some(key);
-                        }
-                    });
-                    ui.same_line();
-                    if ui.button(format!("Clear##{name}")) {
-                        let mut mapper = self.input_mapper.write().unwrap();
-                        mapper.clear_binding(key);
-                    }
-                }
-
-                table.end();
-            }
-        };
-
-        if let Some(window) = ui.fullscreen_window() {
-            if let Some(tabs) = ui.tab_bar("tabs") {
-                if let Some(tab) = ui.tab_item("Player 1") {
-                    render_key_bindings();
-                    tab.end();
-                }
-                tabs.end();
-            }
-            window.end();
-        }
-        let mut encoder: wgpu::CommandEncoder = window
-            .device
-            .create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
-
-        if imgui.last_cursor != ui.mouse_cursor() {
-            imgui.last_cursor = ui.mouse_cursor();
-            imgui.platform.prepare_render(ui, &window.window);
-        }
-
-        let view = frame
-            .texture
-            .create_view(&wgpu::TextureViewDescriptor::default());
-        let mut rpass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
-            label: None,
-            color_attachments: &[Some(wgpu::RenderPassColorAttachment {
-                view: &view,
-                resolve_target: None,
-                ops: wgpu::Operations {
-                    load: wgpu::LoadOp::Clear(imgui.clear_color),
-                    store: wgpu::StoreOp::Store,
-                },
-            })],
-            depth_stencil_attachment: None,
-            timestamp_writes: None,
-            occlusion_query_set: None,
-        });
-
-        // Draw the game
-        imgui
-            .renderer
-            .render(context.render(), &window.queue, &window.device, &mut rpass)
-            .expect("Rendering failed");
-
-        drop(rpass);
-
-        window.queue.submit(Some(encoder.finish()));
-
-        frame.present();
-    }
-
-    fn try_bind_key(&mut self, event: &KeyEvent) {
-        if !event.state.is_pressed() {
-            return;
-        }
-        let Some(vb) = self.now_binding.take() else {
-            return;
-        };
-        let mut mapper = self.input_mapper.write().unwrap();
-        mapper.bind_key(vb, event.key_without_modifiers());
-    }
-}
-
-impl AppWindow for InputWindow {
-    fn id(&self) -> winit::window::WindowId {
-        self.window.window.id()
-    }
-
-    fn init(&mut self) {
-        self.imgui = Some(ImguiState::new(&self.window));
-        self.window.window.request_redraw();
-    }
-
-    fn handle_event(&mut self, _: &ActiveEventLoop, event: &Event<UserEvent>) {
-        match event {
-            Event::WindowEvent { event, .. } => match event {
-                WindowEvent::Resized(size) => self.window.handle_resize(size),
-                WindowEvent::CloseRequested => self
-                    .proxy
-                    .send_event(UserEvent::CloseWindow(self.id()))
-                    .unwrap(),
-                WindowEvent::KeyboardInput { event, .. } => self.try_bind_key(event),
-                WindowEvent::RedrawRequested => self.draw(),
-                _ => (),
-            },
-            Event::AboutToWait => {
-                self.window.window.request_redraw();
-            }
-            _ => (),
-        }
-
-        let window = &self.window;
-        let Some(imgui) = self.imgui.as_mut() else {
-            return;
-        };
-        let mut context = imgui.context.lock().unwrap();
-        imgui
-            .platform
-            .handle_event(context.io_mut(), &window.window, event);
-    }
-}

src/audio.rs

@@ -1,101 +0,0 @@
-use anyhow::{bail, Result};
-use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
-use itertools::Itertools;
-use rubato::{FftFixedInOut, Resampler};
-
-pub struct Audio {
-    #[allow(unused)]
-    stream: cpal::Stream,
-    sampler: FftFixedInOut<f32>,
-    input_buffer: Vec<Vec<f32>>,
-    output_buffer: Vec<Vec<f32>>,
-    sample_sink: rtrb::Producer<f32>,
-}
-
-impl Audio {
-    pub fn init() -> Result<Self> {
-        let host = cpal::default_host();
-        let Some(device) = host.default_output_device() else {
-            bail!("No output device available");
-        };
-        let Some(config) = device
-            .supported_output_configs()?
-            .find(|c| c.channels() == 2 && c.sample_format().is_float())
-        else {
-            bail!("No suitable output config available");
-        };
-        let mut config = config.with_max_sample_rate().config();
-        let sampler = FftFixedInOut::new(41700, config.sample_rate.0 as usize, 834, 2)?;
-        config.buffer_size = cpal::BufferSize::Fixed(sampler.output_frames_max() as u32);
-
-        let input_buffer = sampler.input_buffer_allocate(true);
-        let output_buffer = sampler.output_buffer_allocate(true);
-        let (sample_sink, mut sample_source) =
-            rtrb::RingBuffer::new(sampler.output_frames_max() * 4);
-
-        let stream = device.build_output_stream(
-            &config,
-            move |data: &mut [f32], _| {
-                let requested = data.len();
-                let chunk = match sample_source.read_chunk(data.len()) {
-                    Ok(c) => c,
-                    Err(rtrb::chunks::ChunkError::TooFewSlots(n)) => {
-                        sample_source.read_chunk(n).unwrap()
-                    }
-                };
-                let len = chunk.len();
-                let (first, second) = chunk.as_slices();
-                data[0..first.len()].copy_from_slice(first);
-                data[first.len()..len].copy_from_slice(second);
-                for rest in &mut data[len..requested] {
-                    *rest = 0.0;
-                }
-                chunk.commit_all();
-            },
-            move |err| eprintln!("stream error: {err}"),
-            None,
-        )?;
-        stream.play()?;
-        Ok(Self {
-            stream,
-            sampler,
-            input_buffer,
-            output_buffer,
-            sample_sink,
-        })
-    }
-
-    pub fn update(&mut self, samples: &[f32]) {
-        for sample in samples.chunks_exact(2) {
-            for (channel, value) in self.input_buffer.iter_mut().zip(sample) {
-                channel.push(*value);
-            }
-            if self.input_buffer[0].len() >= self.sampler.input_frames_next() {
-                let (_, output_samples) = self
-                    .sampler
-                    .process_into_buffer(&self.input_buffer, &mut self.output_buffer, None)
-                    .unwrap();
-
-                let chunk = match self.sample_sink.write_chunk_uninit(output_samples * 2) {
-                    Ok(c) => c,
-                    Err(rtrb::chunks::ChunkError::TooFewSlots(n)) => {
-                        self.sample_sink.write_chunk_uninit(n).unwrap()
-                    }
-                };
-                let interleaved = self.output_buffer[0]
-                    .iter()
-                    .interleave(self.output_buffer[1].iter())
-                    .cloned();
-                chunk.fill_from_iter(interleaved);
-
-                for channel in &mut self.input_buffer {
-                    channel.clear();
-                }
-            }
-        }
-
-        while self.sample_sink.slots() < self.sampler.output_frames_max() * 2 {
-            std::hint::spin_loop();
-        }
-    }
-}

src/controller.rs

@@ -1,50 +0,0 @@
-use std::sync::{Arc, RwLock};
-
-use winit::event::{ElementState, KeyEvent};
-
-use crate::{input::InputMapper, shrooms_vb_core::VBKey};
-
-pub struct ControllerState {
-    input_mapper: Arc<RwLock<InputMapper>>,
-    pressed: VBKey,
-}
-
-impl ControllerState {
-    pub fn new(input_mapper: Arc<RwLock<InputMapper>>) -> Self {
-        Self {
-            input_mapper,
-            pressed: VBKey::SGN,
-        }
-    }
-
-    pub fn pressed(&self) -> VBKey {
-        self.pressed
-    }
-
-    pub fn key_event(&mut self, event: &KeyEvent) -> bool {
-        let Some(input) = self.key_event_to_input(event) 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_event_to_input(&self, event: &KeyEvent) -> Option<VBKey> {
-        let mapper = self.input_mapper.read().unwrap();
-        mapper.key_event(event)
-    }
-}

src/emulator.rs

@@ -1,199 +0,0 @@
-use std::{
-    fs,
-    path::{Path, PathBuf},
-    sync::{
-        atomic::{AtomicBool, Ordering},
-        mpsc::{self, RecvError, TryRecvError},
-        Arc,
-    },
-};
-
-use anyhow::Result;
-
-use crate::{
-    audio::Audio,
-    renderer::GameRenderer,
-    shrooms_vb_core::{CoreVB, VBKey},
-};
-
-pub struct EmulatorBuilder {
-    rom: Option<PathBuf>,
-    commands: mpsc::Receiver<EmulatorCommand>,
-    running: Arc<AtomicBool>,
-    has_game: Arc<AtomicBool>,
-}
-
-impl EmulatorBuilder {
-    pub fn new() -> (Self, EmulatorClient) {
-        let (queue, commands) = mpsc::channel();
-        let builder = Self {
-            rom: None,
-            commands,
-            running: Arc::new(AtomicBool::new(false)),
-            has_game: Arc::new(AtomicBool::new(false)),
-        };
-        let client = EmulatorClient {
-            queue,
-            running: builder.running.clone(),
-            has_game: builder.has_game.clone(),
-        };
-        (builder, client)
-    }
-
-    pub fn with_rom(self, path: &Path) -> Self {
-        Self {
-            rom: Some(path.into()),
-            ..self
-        }
-    }
-
-    pub fn build(self) -> Result<Emulator> {
-        let mut emulator = Emulator::new(self.commands, self.running, self.has_game)?;
-        if let Some(path) = self.rom {
-            emulator.load_rom(&path)?;
-        }
-        Ok(emulator)
-    }
-}
-
-pub struct Emulator {
-    sim: CoreVB,
-    audio: Audio,
-    commands: mpsc::Receiver<EmulatorCommand>,
-    renderer: Option<GameRenderer>,
-    running: Arc<AtomicBool>,
-    has_game: Arc<AtomicBool>,
-}
-
-impl Emulator {
-    fn new(
-        commands: mpsc::Receiver<EmulatorCommand>,
-        running: Arc<AtomicBool>,
-        has_game: Arc<AtomicBool>,
-    ) -> Result<Self> {
-        Ok(Self {
-            sim: CoreVB::new(),
-            audio: Audio::init()?,
-            commands,
-            renderer: None,
-            running,
-            has_game,
-        })
-    }
-
-    pub fn load_rom(&mut self, path: &Path) -> Result<()> {
-        let bytes = fs::read(path)?;
-        self.sim.reset();
-        self.sim.load_rom(bytes)?;
-        self.has_game.store(true, Ordering::Release);
-        self.running.store(true, Ordering::Release);
-        Ok(())
-    }
-
-    pub fn run(&mut self) {
-        let mut eye_contents = vec![0u8; 384 * 224 * 2];
-        let mut audio_samples = vec![];
-        loop {
-            let mut idle = true;
-            if self.running.load(Ordering::Acquire) {
-                idle = false;
-                self.sim.emulate_frame();
-            }
-            if let Some(renderer) = &mut self.renderer {
-                if self.sim.read_pixels(&mut eye_contents) {
-                    idle = false;
-                    renderer.render(&eye_contents);
-                }
-            }
-            self.sim.read_samples(&mut audio_samples);
-            if !audio_samples.is_empty() {
-                idle = false;
-                self.audio.update(&audio_samples);
-                audio_samples.clear();
-            }
-            if idle {
-                // The game is paused, and we have output all the video/audio we have.
-                // Block the thread until a new command comes in.
-                match self.commands.recv() {
-                    Ok(command) => self.handle_command(command),
-                    Err(RecvError) => {
-                        return;
-                    }
-                }
-            }
-            loop {
-                match self.commands.try_recv() {
-                    Ok(command) => self.handle_command(command),
-                    Err(TryRecvError::Empty) => {
-                        break;
-                    }
-                    Err(TryRecvError::Disconnected) => {
-                        return;
-                    }
-                }
-            }
-        }
-    }
-
-    fn handle_command(&mut self, command: EmulatorCommand) {
-        match command {
-            EmulatorCommand::SetRenderer(renderer) => {
-                self.renderer = Some(renderer);
-            }
-            EmulatorCommand::LoadGame(path) => {
-                if let Err(error) = self.load_rom(&path) {
-                    eprintln!("error loading rom: {}", error);
-                }
-            }
-            EmulatorCommand::Pause => {
-                self.running.store(false, Ordering::Release);
-            }
-            EmulatorCommand::Resume => {
-                if self.has_game.load(Ordering::Acquire) {
-                    self.running.store(true, Ordering::Relaxed);
-                }
-            }
-            EmulatorCommand::Reset => {
-                self.sim.reset();
-                self.running.store(true, Ordering::Release);
-            }
-            EmulatorCommand::SetKeys(keys) => {
-                self.sim.set_keys(keys);
-            }
-        }
-    }
-}
-
-#[derive(Debug)]
-pub enum EmulatorCommand {
-    SetRenderer(GameRenderer),
-    LoadGame(PathBuf),
-    Pause,
-    Resume,
-    Reset,
-    SetKeys(VBKey),
-}
-
-#[derive(Clone)]
-pub struct EmulatorClient {
-    queue: mpsc::Sender<EmulatorCommand>,
-    running: Arc<AtomicBool>,
-    has_game: Arc<AtomicBool>,
-}
-
-impl EmulatorClient {
-    pub fn is_running(&self) -> bool {
-        self.running.load(Ordering::Acquire)
-    }
-    pub fn has_game(&self) -> bool {
-        self.has_game.load(Ordering::Acquire)
-    }
-    pub fn send_command(&self, command: EmulatorCommand) {
-        if let Err(err) = self.queue.send(command) {
-            eprintln!(
-                "could not send command {:?} as emulator is shut down",
-                err.0
-            );
-        }
-    }
-}

src/input.rs

@@ -1,71 +0,0 @@
-use std::collections::HashMap;
-
-use winit::{
-    event::KeyEvent,
-    keyboard::{Key, NamedKey},
-    platform::modifier_supplement::KeyEventExtModifierSupplement,
-};
-
-use crate::shrooms_vb_core::VBKey;
-
-pub struct InputMapper {
-    vb_bindings: HashMap<VBKey, Key>,
-    key_bindings: HashMap<Key, VBKey>,
-}
-
-impl InputMapper {
-    pub fn new() -> Self {
-        let mut mapper = Self {
-            vb_bindings: HashMap::new(),
-            key_bindings: HashMap::new(),
-        };
-        mapper.bind_key(VBKey::SEL, Key::Character("a".into()));
-        mapper.bind_key(VBKey::STA, Key::Character("s".into()));
-        mapper.bind_key(VBKey::B, Key::Character("d".into()));
-        mapper.bind_key(VBKey::A, Key::Character("f".into()));
-        mapper.bind_key(VBKey::LT, Key::Character("e".into()));
-        mapper.bind_key(VBKey::RT, Key::Character("r".into()));
-        mapper.bind_key(VBKey::RU, Key::Character("i".into()));
-        mapper.bind_key(VBKey::RL, Key::Character("j".into()));
-        mapper.bind_key(VBKey::RD, Key::Character("k".into()));
-        mapper.bind_key(VBKey::RR, Key::Character("l".into()));
-        mapper.bind_key(VBKey::LU, Key::Named(NamedKey::ArrowUp));
-        mapper.bind_key(VBKey::LL, Key::Named(NamedKey::ArrowLeft));
-        mapper.bind_key(VBKey::LD, Key::Named(NamedKey::ArrowDown));
-        mapper.bind_key(VBKey::LR, Key::Named(NamedKey::ArrowRight));
-        mapper
-    }
-
-    pub fn binding_names(&self) -> HashMap<VBKey, String> {
-        self.vb_bindings
-            .iter()
-            .map(|(k, v)| {
-                let name = match v {
-                    Key::Character(char) => char.to_string(),
-                    Key::Named(key) => format!("{:?}", key),
-                    k => format!("{:?}", k),
-                };
-                (*k, name)
-            })
-            .collect()
-    }
-
-    pub fn bind_key(&mut self, vb: VBKey, key: Key) {
-        if let Some(old) = self.vb_bindings.insert(vb, key.clone()) {
-            self.key_bindings.remove(&old);
-        }
-        self.key_bindings.insert(key, vb);
-    }
-
-    pub fn clear_binding(&mut self, vb: VBKey) {
-        if let Some(old) = self.vb_bindings.remove(&vb) {
-            self.key_bindings.remove(&old);
-        }
-    }
-
-    pub fn key_event(&self, event: &KeyEvent) -> Option<VBKey> {
-        self.key_bindings
-            .get(&event.key_without_modifiers())
-            .cloned()
-    }
-}

src/main.rs

@@ -1,50 +0,0 @@
-use std::{path::PathBuf, process};
-
-use anyhow::Result;
-use app::App;
-use clap::Parser;
-use emulator::EmulatorBuilder;
-use thread_priority::{ThreadBuilder, ThreadPriority};
-use winit::event_loop::{ControlFlow, EventLoop};
-
-mod app;
-mod audio;
-mod controller;
-mod emulator;
-mod input;
-mod renderer;
-mod shrooms_vb_core;
-
-#[derive(Parser)]
-struct Args {
-    rom: Option<PathBuf>,
-}
-
-fn main() -> Result<()> {
-    let args = Args::parse();
-
-    let (mut builder, client) = EmulatorBuilder::new();
-    if let Some(path) = args.rom {
-        builder = builder.with_rom(&path);
-    }
-
-    ThreadBuilder::default()
-        .name("Emulator".to_owned())
-        .priority(ThreadPriority::Max)
-        .spawn_careless(move || {
-            let mut emulator = match builder.build() {
-                Ok(e) => e,
-                Err(err) => {
-                    eprintln!("Error initializing emulator: {err}");
-                    process::exit(1);
-                }
-            };
-            emulator.run();
-        })?;
-
-    let event_loop = EventLoop::with_user_event().build().unwrap();
-    event_loop.set_control_flow(ControlFlow::Poll);
-    let proxy = event_loop.create_proxy();
-    event_loop.run_app(&mut App::new(client, proxy))?;
-    Ok(())
-}

src/renderer.rs

@@ -1,53 +0,0 @@
-use std::sync::Arc;
-
-use wgpu::{
-    Extent3d, ImageCopyTexture, ImageDataLayout, Origin3d, Queue, Texture, TextureDescriptor,
-    TextureFormat, TextureUsages,
-};
-
-#[derive(Debug)]
-pub struct GameRenderer {
-    pub queue: Arc<Queue>,
-    pub eyes: Arc<Texture>,
-}
-
-impl GameRenderer {
-    pub fn render(&self, buffer: &[u8]) {
-        let texture = ImageCopyTexture {
-            texture: &self.eyes,
-            mip_level: 0,
-            origin: Origin3d::ZERO,
-            aspect: wgpu::TextureAspect::All,
-        };
-        let size = Extent3d {
-            width: 384,
-            height: 224,
-            depth_or_array_layers: 1,
-        };
-        let data_layout = ImageDataLayout {
-            offset: 0,
-            bytes_per_row: Some(384 * 2),
-            rows_per_image: Some(224),
-        };
-        self.queue.write_texture(texture, buffer, data_layout, size);
-    }
-    pub fn create_texture(device: &wgpu::Device, name: &str) -> Texture {
-        let desc = TextureDescriptor {
-            label: Some(name),
-            size: Extent3d {
-                width: 384,
-                height: 224,
-                depth_or_array_layers: 1,
-            },
-            mip_level_count: 1,
-            sample_count: 1,
-            dimension: wgpu::TextureDimension::D2,
-            format: TextureFormat::Rg8Unorm,
-            usage: TextureUsages::COPY_SRC
-                | TextureUsages::COPY_DST
-                | TextureUsages::TEXTURE_BINDING,
-            view_formats: &[TextureFormat::Rg8Unorm],
-        };
-        device.create_texture(&desc)
-    }
-}

src/shrooms_vb_core.rs

@@ -1,251 +0,0 @@
-use std::{ffi::c_void, ptr, slice};
-
-use anyhow::{anyhow, Result};
-use bitflags::bitflags;
-use num_derive::{FromPrimitive, ToPrimitive};
-
-#[repr(C)]
-struct VB {
-    _data: [u8; 0],
-}
-
-#[allow(non_camel_case_types)]
-type c_int = i32;
-#[allow(non_camel_case_types)]
-type c_uint = u32;
-
-#[repr(u32)]
-#[derive(FromPrimitive, ToPrimitive)]
-enum VBDataType {
-    S8 = 0,
-    U8 = 1,
-    S16 = 2,
-    U16 = 3,
-    S32 = 4,
-    F32 = 5,
-}
-
-bitflags! {
-    #[repr(transparent)]
-    #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
-    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")]
-extern "C" {
-    #[link_name = "vbEmulate"]
-    fn vb_emulate(sim: *mut VB, cycles: *mut u32) -> c_int;
-    #[link_name = "vbGetCartROM"]
-    fn vb_get_cart_rom(sim: *mut VB, size: *mut u32) -> *mut c_void;
-    #[link_name = "vbGetPixels"]
-    fn vb_get_pixels(
-        sim: *mut VB,
-        left: *mut c_void,
-        left_stride_x: c_int,
-        left_stride_y: c_int,
-        right: *mut c_void,
-        right_stride_x: c_int,
-        right_stride_y: c_int,
-    );
-    #[link_name = "vbGetSamples"]
-    fn vb_get_samples(
-        sim: *mut VB,
-        typ_: *mut VBDataType,
-        capacity: *mut c_uint,
-        position: *mut c_uint,
-    ) -> *mut c_void;
-    #[link_name = "vbGetUserData"]
-    fn vb_get_user_data(sim: *mut VB) -> *mut c_void;
-    #[link_name = "vbInit"]
-    fn vb_init(sim: *mut VB) -> *mut VB;
-    #[link_name = "vbReset"]
-    fn vb_reset(sim: *mut VB);
-    #[link_name = "vbSetCartROM"]
-    fn vb_set_cart_rom(sim: *mut VB, rom: *mut c_void, size: u32) -> c_int;
-    #[link_name = "vbSetKeys"]
-    fn vb_set_keys(sim: *mut VB, keys: u16) -> u16;
-    #[link_name = "vbSetFrameCallback"]
-    fn vb_set_frame_callback(sim: *mut VB, on_frame: OnFrame);
-    #[link_name = "vbSetSamples"]
-    fn vb_set_samples(
-        sim: *mut VB,
-        samples: *mut c_void,
-        typ_: VBDataType,
-        capacity: c_uint,
-    ) -> c_int;
-    #[link_name = "vbSetUserData"]
-    fn vb_set_user_data(sim: *mut VB, tag: *mut c_void);
-    #[link_name = "vbSizeOf"]
-    fn vb_size_of() -> usize;
-}
-
-extern "C" fn on_frame(sim: *mut VB) -> i32 {
-    // SAFETY: the *mut VB owns its userdata.
-    // There is no way for the userdata to be null or otherwise invalid.
-    let data: &mut VBState = unsafe { &mut *vb_get_user_data(sim).cast() };
-    data.frame_seen = true;
-    1
-}
-
-const AUDIO_CAPACITY_SAMPLES: usize = 834 * 4;
-const AUDIO_CAPACITY_FLOATS: usize = AUDIO_CAPACITY_SAMPLES * 2;
-
-struct VBState {
-    frame_seen: bool,
-}
-
-pub struct CoreVB {
-    sim: *mut VB,
-}
-
-// SAFETY: the memory pointed to by sim is valid
-unsafe impl Send for CoreVB {}
-
-impl CoreVB {
-    pub fn new() -> Self {
-        // init the VB instance itself
-        let size = unsafe { vb_size_of() };
-        // allocate a vec of u64 so that this memory is 8-byte aligned
-        let memory = vec![0u64; size.div_ceil(4)];
-        let sim: *mut VB = Box::into_raw(memory.into_boxed_slice()).cast();
-        unsafe { vb_init(sim) };
-        unsafe { vb_reset(sim) };
-
-        // set up userdata
-        let state = VBState { frame_seen: false };
-        unsafe { vb_set_user_data(sim, Box::into_raw(Box::new(state)).cast()) };
-        unsafe { vb_set_frame_callback(sim, on_frame) };
-
-        // set up audio buffer
-        let audio_buffer = vec![0.0f32; AUDIO_CAPACITY_FLOATS];
-        let samples: *mut c_void = Box::into_raw(audio_buffer.into_boxed_slice()).cast();
-        unsafe { vb_set_samples(sim, samples, VBDataType::F32, AUDIO_CAPACITY_SAMPLES as u32) };
-
-        CoreVB { sim }
-    }
-
-    pub fn reset(&mut self) {
-        unsafe { vb_reset(self.sim) };
-    }
-
-    pub fn load_rom(&mut self, rom: Vec<u8>) -> Result<()> {
-        self.unload_rom();
-
-        let size = rom.len() as u32;
-        let rom = Box::into_raw(rom.into_boxed_slice()).cast();
-        let status = unsafe { vb_set_cart_rom(self.sim, rom, size) };
-        if status == 0 {
-            Ok(())
-        } else {
-            let _: Vec<u8> =
-                unsafe { Vec::from_raw_parts(rom.cast(), size as usize, size as usize) };
-            Err(anyhow!("Invalid ROM size of {} bytes", size))
-        }
-    }
-
-    fn unload_rom(&mut self) -> Option<Vec<u8>> {
-        let mut size = 0;
-        let rom = unsafe { vb_get_cart_rom(self.sim, &mut size) };
-        if rom.is_null() {
-            return None;
-        }
-        unsafe { vb_set_cart_rom(self.sim, ptr::null_mut(), 0) };
-        let vec = unsafe { Vec::from_raw_parts(rom.cast(), size as usize, size as usize) };
-        Some(vec)
-    }
-
-    pub fn emulate_frame(&mut self) {
-        let mut cycles = 20_000_000;
-        unsafe { vb_emulate(self.sim, &mut cycles) };
-    }
-
-    pub fn read_pixels(&mut self, buffers: &mut [u8]) -> bool {
-        // SAFETY: the *mut VB owns its userdata.
-        // There is no way for the userdata to be null or otherwise invalid.
-        let data: &mut VBState = unsafe { &mut *vb_get_user_data(self.sim).cast() };
-        if !data.frame_seen {
-            return false;
-        }
-        data.frame_seen = false;
-
-        // the buffer must be big enough for our data
-        assert!(buffers.len() >= 384 * 224 * 2);
-        unsafe {
-            vb_get_pixels(
-                self.sim,
-                buffers.as_mut_ptr().cast(),
-                2,
-                384 * 2,
-                buffers.as_mut_ptr().offset(1).cast(),
-                2,
-                384 * 2,
-            );
-        };
-        true
-    }
-
-    pub fn read_samples(&mut self, samples: &mut Vec<f32>) {
-        let mut position = 0;
-        let ptr =
-            unsafe { vb_get_samples(self.sim, ptr::null_mut(), ptr::null_mut(), &mut position) };
-        // SAFETY: position is an offset in a buffer of (f32, f32). so, position * 2 is an offset in a buffer of f32.
-        let read_samples: &mut [f32] =
-            unsafe { slice::from_raw_parts_mut(ptr.cast(), position as usize * 2) };
-        samples.extend_from_slice(read_samples);
-
-        unsafe {
-            vb_set_samples(
-                self.sim,
-                ptr,
-                VBDataType::F32,
-                AUDIO_CAPACITY_SAMPLES as u32,
-            )
-        };
-    }
-
-    pub fn set_keys(&mut self, keys: VBKey) {
-        unsafe { vb_set_keys(self.sim, keys.bits()) };
-    }
-}
-
-impl Drop for CoreVB {
-    fn drop(&mut self) {
-        let ptr =
-            unsafe { vb_get_samples(self.sim, ptr::null_mut(), ptr::null_mut(), ptr::null_mut()) };
-        // SAFETY: the audio buffer originally came from a Vec<u32>
-        let floats: Vec<f32> = unsafe {
-            Vec::from_raw_parts(ptr.cast(), AUDIO_CAPACITY_FLOATS, AUDIO_CAPACITY_FLOATS)
-        };
-        drop(floats);
-
-        // SAFETY: the *mut VB owns its userdata.
-        // There is no way for the userdata to be null or otherwise invalid.
-        let ptr: *mut VBState = unsafe { vb_get_user_data(self.sim).cast() };
-        // SAFETY: we made this pointer ourselves, we can for sure free it
-        unsafe { drop(Box::from_raw(ptr)) };
-
-        let len = unsafe { vb_size_of() }.div_ceil(4);
-        // SAFETY: the sim's memory originally came from a Vec<u64>
-        let bytes: Vec<u64> = unsafe { Vec::from_raw_parts(self.sim.cast(), len, len) };
-        drop(bytes);
-    }
-}

ui.c

@@ -0,0 +1,218 @@
+#include "audio.h"
+#include "controller.h"
+#include "emulation.h"
+#include "external/tinyfiledialogs.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include "ui.h"
+#include "window.h"
+
+struct UIContext {
+    EmulationContext emu;
+    WindowContext win;
+    AudioContext aud;
+    ControllerState ctrl;
+};
+
+UIContext *uiInit() {
+    UIContext *ui = malloc(sizeof(UIContext));
+    if (emuInit(&ui->emu)) {
+        goto destroy_ui;
+    }
+    if (windowInit(&ui->win, "Shrooms VB")) {
+        goto destroy_emu;
+    }
+    if (audioInit(&ui->aud)) {
+        goto destroy_window;
+    }
+    ctrlInit(&ui->ctrl);
+    return ui;
+
+destroy_window:
+    windowDestroy(&ui->win);
+destroy_emu:
+    emuDestroy(&ui->emu);
+destroy_ui:
+    free(ui);
+    return NULL;
+}
+
+void uiDestroy(UIContext *ui) {
+    audioDestroy(&ui->aud);
+    windowDestroy(&ui->win);
+    emuDestroy(&ui->emu);
+    free(ui);
+}
+
+int uiLoadGame(UIContext *ui, const char *path) {
+    FILE *file = fopen(path, "rb");
+    uint8_t *rom = NULL;
+    long fileSize;
+    uint32_t romSize;
+    int result;
+
+    if (!file) {
+        perror("could not open file");
+        return -1;
+    }
+
+    if (fseek(file, 0, SEEK_END)) {
+        perror("could not seek file end");
+        goto close_file;
+    }
+    fileSize = ftell(file);
+    if (fileSize == -1) {
+        perror("could not read file size");
+        goto close_file;
+    }
+    if (fseek(file, 0, SEEK_SET)) {
+        perror("could not seek file start");
+        goto close_file;
+    }
+    romSize = (uint32_t) fileSize;
+
+    rom = malloc(romSize);
+    if (!rom) {
+        perror("could not allocate ROM");
+        goto close_file;
+    }
+    fread(rom, 1, romSize, file);
+    if (ferror(file)) {
+        perror("could not read file");
+        goto free_rom;
+    }
+    result = fclose(file);
+    file = NULL;
+    if (result) {
+        perror("could not close file");
+        goto free_rom;
+    }
+
+    emuLoadGame(&ui->emu, rom, romSize);
+    return 0;
+
+free_rom:
+    free(rom);
+close_file:
+    if (file) fclose(file);
+    return -1;
+}
+
+static const char *MENU_ITEMS[4] = {
+    "File",
+    "Emulation",
+    "Video",
+    NULL
+};
+
+static const char *ROM_EXTENSIONS[2] = {
+    "*.vb",
+    NULL
+};
+
+typedef enum status_t {
+    status_paused,
+    status_running
+} status_t;
+
+int uiRun(UIContext *ui, bool running) {
+    static uint8_t leftEye[384*224] = {0};
+    static uint8_t rightEye[384*224] = {0};
+    status_t status = running ? status_running : status_paused;
+    windowUpdate(&ui->win, leftEye, rightEye);
+
+    while (1) {
+        struct nk_context *ctx;
+        SDL_Event event;
+        void *samples;
+        uint32_t bytes;
+        ctx = ui->win.nk;
+
+        if (status == status_running) {
+            emuTick(&ui->emu);
+        }
+
+        if (emuReadPixels(&ui->emu, leftEye, rightEye)) {
+            windowUpdate(&ui->win, leftEye, rightEye);
+        }
+        emuReadSamples(&ui->emu, &samples, &bytes);
+        if (bytes) {
+            audioUpdate(&ui->aud, samples, bytes);
+        }
+
+        windowDisplayBegin(&ui->win);
+        /* GUI */
+        if (windowGuiBegin(&ui->win, "Shrooms VB")) {
+            windowMenubarBegin(&ui->win, MENU_ITEMS);
+
+            if (windowMenuBegin(&ui->win, "File", 100)) {
+                if (windowMenuItemLabel(&ui->win, "Open ROM")) {
+                    char *file = tinyfd_openFileDialog("Pick a ROM", NULL, 1, ROM_EXTENSIONS, "Virtual Boy ROM files", false);
+                    if (file) {
+                        uiLoadGame(ui, file);
+                        status = status_running;
+                    }
+                }
+                if (windowMenuItemLabel(&ui->win, "Quit")) {
+                    SDL_Event QuitEvent;
+                    QuitEvent.type = SDL_QUIT;
+                    QuitEvent.quit.timestamp = SDL_GetTicks();
+                    SDL_PushEvent(&QuitEvent);
+                }
+                windowMenuEnd(&ui->win);
+            }
+
+            if (windowMenuBegin(&ui->win, "Emulation", 100)) {
+                const char *label = status == status_paused ? "Resume" : "Pause";
+                if (windowMenuItemLabel(&ui->win, label)) {
+                    if (status == status_paused)
+                        status = status_running;
+                    else
+                        status = status_paused;
+                }
+                if (windowMenuItemLabel(&ui->win, "Reset")) {
+                    emuReset(&ui->emu);
+                    status = emuIsGameLoaded(&ui->emu) ? status_running : status_paused;
+                }
+                windowMenuEnd(&ui->win);
+            }
+
+            if (windowMenuBegin(&ui->win, "Video", 100)) {
+                float multiplier = windowGetScreenSizeMultiplier(&ui->win);
+                if (windowMenuItemLabelChecked(&ui->win, "x1", multiplier == 1.0f)) {
+                    windowSetScreenSizeMultiplier(&ui->win, 1.0f);
+                }
+                if (windowMenuItemLabelChecked(&ui->win, "x2", multiplier == 2.0f)) {
+                    windowSetScreenSizeMultiplier(&ui->win, 2.0f);
+                }
+                if (windowMenuItemLabelChecked(&ui->win, "x3", multiplier == 3.0f)) {
+                    windowSetScreenSizeMultiplier(&ui->win, 3.0f);
+                }
+                if (windowMenuItemLabelChecked(&ui->win, "x4", multiplier == 4.0f)) {
+                    windowSetScreenSizeMultiplier(&ui->win, 4.0f);
+                }
+                windowMenuEnd(&ui->win);
+            }
+
+            windowMenubarEnd(&ui->win);
+        }
+        windowGuiEnd(&ui->win);
+        windowDisplayEnd(&ui->win);
+
+        nk_input_begin(ctx);
+        while (SDL_PollEvent(&event)) {
+            nk_sdl_handle_event(&event);
+            if (event.type == SDL_QUIT) {
+                return 0;
+            }
+            if (event.type == SDL_KEYDOWN) {
+                ctrlKeyDown(&ui->ctrl, event.key.keysym.sym);
+            }
+            if (event.type == SDL_KEYUP) {
+                ctrlKeyUp(&ui->ctrl, event.key.keysym.sym);
+            }
+        }
+        nk_input_end(ctx);
+        emuSetKeys(&ui->emu, ctrlKeys(&ui->ctrl));
+    }
+}

ui.h

@@ -0,0 +1,13 @@
+#ifndef SHROOMS_VB_NATIVE_UI_
+#define SHROOMS_VB_NATIVE_UI_
+
+#include <stdbool.h>
+
+typedef struct UIContext UIContext;
+
+UIContext *uiInit();
+void uiDestroy(UIContext *ui);
+int uiLoadGame(UIContext *ui, const char *path);
+int uiRun(UIContext *ui, bool running);
+
+#endif

window.c

@@ -0,0 +1,291 @@
+#include "assets.h"
+#include "nuklear.h"
+#include <string.h>
+#include "window.h"
+
+#define MENU_HEIGHT 20
+#define SCREEN_WIDTH 384
+#define SCREEN_HEIGHT 224
+
+static void setColorTable(struct nk_color *table) {
+    table[NK_COLOR_TEXT] = nk_rgb(40, 40, 40);
+    table[NK_COLOR_WINDOW] = nk_rgb(255, 255, 255);
+    table[NK_COLOR_HEADER] = nk_rgb(40, 40, 40);
+    table[NK_COLOR_BORDER] = nk_rgb(175, 175, 175);
+    table[NK_COLOR_BUTTON] = nk_rgb(255, 255, 255);
+    table[NK_COLOR_BUTTON_HOVER] = nk_rgb(215, 215, 215);
+    table[NK_COLOR_BUTTON_ACTIVE] = nk_rgb(175, 175, 175);
+    table[NK_COLOR_TOGGLE] = nk_rgb(100, 100, 100);
+    table[NK_COLOR_TOGGLE_HOVER] = nk_rgb(120, 120, 120);
+    table[NK_COLOR_TOGGLE_CURSOR] = nk_rgb(45, 45, 45);
+    table[NK_COLOR_SELECT] = nk_rgb(45, 45, 45);
+    table[NK_COLOR_SELECT_ACTIVE] = nk_rgb(35, 35, 35);
+    table[NK_COLOR_SLIDER] = nk_rgb(38, 38, 38);
+    table[NK_COLOR_SLIDER_CURSOR] = nk_rgb(100, 100, 100);
+    table[NK_COLOR_SLIDER_CURSOR_HOVER] = nk_rgb(120, 120, 120);
+    table[NK_COLOR_SLIDER_CURSOR_ACTIVE] = nk_rgb(150, 150, 150);
+    table[NK_COLOR_PROPERTY] = nk_rgb(38, 38, 38);
+    table[NK_COLOR_EDIT] = nk_rgb(38, 38, 38);
+    table[NK_COLOR_EDIT_CURSOR] = nk_rgb(175, 175, 175);
+    table[NK_COLOR_COMBO] = nk_rgb(45, 45, 45);
+    table[NK_COLOR_CHART] = nk_rgb(120, 120, 120);
+    table[NK_COLOR_CHART_COLOR] = nk_rgb(45, 45, 45);
+    table[NK_COLOR_CHART_COLOR_HIGHLIGHT] = nk_rgb(255, 0, 0);
+    table[NK_COLOR_SCROLLBAR] = nk_rgb(40, 40, 40);
+    table[NK_COLOR_SCROLLBAR_CURSOR] = nk_rgb(100, 100, 100);
+    table[NK_COLOR_SCROLLBAR_CURSOR_HOVER] = nk_rgb(120, 120, 120);
+    table[NK_COLOR_SCROLLBAR_CURSOR_ACTIVE] = nk_rgb(150, 150, 150);
+    table[NK_COLOR_TAB_HEADER] = nk_rgb(40, 40, 40);
+    table[NK_COLOR_KNOB] = nk_rgb(38, 38, 38);
+    table[NK_COLOR_KNOB_CURSOR] = nk_rgb(100, 100, 100);
+    table[NK_COLOR_KNOB_CURSOR_HOVER] = nk_rgb(120, 120, 120);
+    table[NK_COLOR_KNOB_CURSOR_ACTIVE] = nk_rgb(150, 150, 150);
+}
+
+static void applyStyles(struct nk_context *ctx, float scaleX, float scaleY) {
+    struct nk_color table[NK_COLOR_COUNT];
+    setColorTable(table);
+    nk_style_from_table(ctx, table);
+    ctx->style.window.padding = nk_vec2(0, 0);
+    ctx->style.window.spacing = nk_vec2(0, 0);
+    ctx->style.window.menu_padding = nk_vec2(0, 0);
+    ctx->style.window.menu_border = 0;
+
+    ctx->style.menu_button.hover = nk_style_item_color(table[NK_COLOR_BUTTON_HOVER]);
+    ctx->style.menu_button.active = nk_style_item_color(table[NK_COLOR_BUTTON_ACTIVE]);
+    ctx->style.menu_button.padding = nk_vec2(2 * scaleX, 2 * scaleY);
+    ctx->style.contextual_button.padding = nk_vec2(20 * scaleX, 4 * scaleY);
+}
+
+/* scale the window for High-DPI displays */
+static void scaleWindow(WindowContext *win) {
+    int renderW, renderH;
+    int oldWindowX, oldWindowY;
+    int newWindowX, newWindowY;
+    int oldWindowW, oldWindowH;
+    int newWindowW, newWindowH;
+    float scaleX, scaleY;
+    float hdpi, vdpi;
+    SDL_GetRendererOutputSize(win->renderer, &renderW, &renderH);
+    SDL_GetWindowPosition(win->window, &oldWindowX, &oldWindowY);
+    SDL_GetWindowSize(win->window, &oldWindowW, &oldWindowH);
+    SDL_GetDisplayDPI(SDL_GetWindowDisplayIndex(win->window), NULL, &hdpi, &vdpi);
+    scaleX = (float)(renderW) / (float)(oldWindowW);
+    scaleY = (float)(renderH) / (float)(oldWindowH);
+    win->screenScaleX = (hdpi / 96) * scaleX;
+    win->screenScaleY = (vdpi / 96) * scaleY;
+
+    newWindowW = SCREEN_WIDTH * win->screenSizeMultiplier * (hdpi / 96) / scaleX;
+    newWindowH = (SCREEN_HEIGHT * win->screenSizeMultiplier + MENU_HEIGHT) * (vdpi / 96) / scaleY;
+    newWindowX = oldWindowX - (newWindowW - oldWindowW) / 2;
+    newWindowY = oldWindowY - (newWindowH - oldWindowH) / 2;
+    if (newWindowX < 0) newWindowX = 0;
+    if (newWindowY < 0) newWindowY = 0;
+    SDL_SetWindowSize(win->window, newWindowW, newWindowH);
+    SDL_SetWindowPosition(win->window, newWindowX, newWindowY);
+}
+
+int windowInit(WindowContext *win, const char *title) {
+    win->screenSizeMultiplier = 1.0f;
+
+    win->window = SDL_CreateWindow(title,
+        SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
+        SCREEN_WIDTH, SCREEN_HEIGHT + MENU_HEIGHT, SDL_WINDOW_SHOWN | SDL_WINDOW_ALLOW_HIGHDPI);
+    if (!win->window) {
+        fprintf(stderr, "Error creating window: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    win->renderer = SDL_CreateRenderer(win->window, -1, 0);
+    if (!win->renderer) {
+        fprintf(stderr, "Error creating renderer: %s\n", SDL_GetError());
+        goto cleanup_window;
+    }
+
+    win->leftEye = SDL_CreateTexture(win->renderer, SDL_PIXELFORMAT_RGB24, SDL_TEXTUREACCESS_STREAMING, 384, 224);
+    if (!win->leftEye) {
+        fprintf(stderr, "Error creating left eye texture: %s\n", SDL_GetError());
+        goto cleanup_renderer;
+    }
+    SDL_SetTextureColorMod(win->leftEye, 0xff, 0, 0);
+
+    win->rightEye = SDL_CreateTexture(win->renderer, SDL_PIXELFORMAT_RGB24, SDL_TEXTUREACCESS_STREAMING, 384, 224);
+    if (!win->rightEye) {
+        fprintf(stderr, "Error creating right eye texture: %s\n", SDL_GetError());
+        goto cleanup_left_eye;
+    }
+    SDL_SetTextureColorMod(win->rightEye, 0, 0xc6, 0xf0);
+    SDL_SetTextureBlendMode(win->rightEye, SDL_BLENDMODE_ADD);
+
+    scaleWindow(win);
+
+    win->nk = nk_sdl_init(win->window, win->renderer);
+    applyStyles(win->nk, win->screenScaleX, win->screenScaleY);
+    /* tell nuklear the mouse moved somewhere so it doesn't think we're hovering in the top left */
+    nk_input_motion(win->nk, 1024, 1024);
+
+    {
+        struct nk_font_atlas *atlas;
+        struct nk_font_config config = nk_font_config(0);
+        config.pixel_snap = 1;
+        config.oversample_h = 8;
+        config.oversample_v = 8;
+        
+        nk_sdl_font_stash_begin(&atlas);
+        win->font = nk_font_atlas_add_from_memory(atlas, (void*) SELAWIK, SELAWIK_LEN, 13 * win->screenScaleY, &config);
+        nk_sdl_font_stash_end();
+
+        nk_style_set_font(win->nk, &win->font->handle);
+    }
+
+    return 0;
+
+cleanup_left_eye:
+    SDL_DestroyTexture(win->leftEye);
+cleanup_renderer:
+    SDL_DestroyRenderer(win->renderer);
+cleanup_window:
+    SDL_DestroyWindow(win->window);
+    return -1;
+}
+
+void windowDestroy(WindowContext *win) {
+    SDL_DestroyTexture(win->rightEye);
+    SDL_DestroyTexture(win->leftEye);
+    SDL_DestroyRenderer(win->renderer);
+    SDL_DestroyWindow(win->window);
+}
+
+float windowGetScreenSizeMultiplier(WindowContext *win) {
+    return win->screenSizeMultiplier;
+}
+
+void windowSetScreenSizeMultiplier(WindowContext *win, float multiplier) {
+    win->screenSizeMultiplier = multiplier;
+    scaleWindow(win);
+    applyStyles(win->nk, win->screenScaleX, win->screenScaleY);
+}
+
+static void copyScreenTexture(uint8_t *dst, const uint8_t *src, int pitch) {
+    int x, y, i;
+    uint8_t color;
+    int delta = pitch / 384;
+    for (y = 0; y < 224; ++y) {
+        for (x = 0; x < 384; x += 1) {
+            color = src[(y * 384) + x];
+            for (i = 0; i < delta; ++i) {
+                dst[(y * pitch) + (x * delta) + i] = color;
+            }
+        }
+    }
+}
+
+static void updateEye(SDL_Texture *eye, const uint8_t *bytes) {
+    void *target;
+    int pitch;
+    if (SDL_LockTexture(eye, NULL, &target, &pitch)) {
+        fprintf(stderr, "Error locking buffer for eye: %s\n", SDL_GetError());
+        return;
+    }
+    copyScreenTexture(target, bytes, pitch);
+    SDL_UnlockTexture(eye);
+}
+
+void windowUpdate(WindowContext *win, const uint8_t *left, const uint8_t *right) {
+    updateEye(win->leftEye, left);
+    updateEye(win->rightEye, right);
+}
+
+int windowScaleX(WindowContext *win, int x) {
+    return x * win->screenScaleX;
+}
+
+int windowScaleY(WindowContext *win, int y) {
+    return y * win->screenScaleY;
+}
+
+int windowGetMenuHeight(WindowContext *win) {
+    return (MENU_HEIGHT + 2) * win->screenScaleY;
+}
+
+int windowGetScreenHeight(WindowContext *win) {
+    return SCREEN_HEIGHT * win->screenSizeMultiplier * win->screenScaleY;
+}
+
+void windowDisplayBegin(WindowContext *win) {
+    SDL_Rect dst;
+    dst.x = 0;
+    dst.y = MENU_HEIGHT * win->screenScaleY;
+    dst.w = SCREEN_WIDTH * win->screenSizeMultiplier * win->screenScaleX;
+    dst.h = SCREEN_HEIGHT * win->screenSizeMultiplier * win->screenScaleY;
+
+    SDL_RenderClear(win->renderer);
+    SDL_RenderCopy(win->renderer, win->leftEye, NULL, &dst);
+    SDL_RenderCopy(win->renderer, win->rightEye, NULL, &dst);
+}
+
+void windowDisplayEnd(WindowContext *win) {
+    nk_sdl_render(NK_ANTI_ALIASING_ON);
+    SDL_RenderPresent(win->renderer);
+}
+
+bool windowGuiBegin(WindowContext *win, const char *title) {
+    return nk_begin(win->nk, title,
+        nk_rect(0, 0, SCREEN_WIDTH * win->screenSizeMultiplier * win->screenScaleX, MENU_HEIGHT * win->screenScaleY),
+        NK_WINDOW_NO_SCROLLBAR | NK_WINDOW_BACKGROUND);
+}
+
+void windowGuiEnd(WindowContext *win) {
+    nk_end(win->nk);
+}
+
+void windowMenubarBegin(WindowContext *win, const char **items) {
+    const char **item;
+    nk_menubar_begin(win->nk);
+    nk_layout_row_template_begin(win->nk, MENU_HEIGHT * win->screenScaleY);
+    for (item = items; *item != NULL; item++) {
+        struct nk_user_font *handle;
+        int len;
+        float width;
+        handle = &win->font->handle;
+        len = nk_strlen(*item);
+        width = handle->width(handle->userdata, handle->height, *item, len) + (16 * win->screenScaleX);
+        nk_layout_row_template_push_static(win->nk, width);
+    }
+    nk_layout_row_template_end(win->nk);
+}
+
+void windowMenubarEnd(WindowContext *win) {
+    nk_menubar_end(win->nk);
+}
+
+bool windowMenuBegin(WindowContext *win, const char *label, int width) {
+    if (!nk_menu_begin_label(win->nk, label, NK_TEXT_ALIGN_CENTERED, nk_vec2(windowScaleX(win, width), windowGetScreenHeight(win)))) {
+        return false;
+    }
+    nk_layout_row_dynamic(win->nk, windowGetMenuHeight(win), 1);
+    return true;
+}
+
+void windowMenuEnd(WindowContext *win) {
+    nk_menu_end(win->nk);
+}
+
+bool windowMenuItemLabel(WindowContext *win, const char *label) {
+    return nk_menu_item_label(win->nk, label, NK_TEXT_ALIGN_LEFT);
+}
+
+bool windowMenuItemLabelChecked(WindowContext *win, const char *label, bool checked) {
+    char buffer[80];
+    bool result;
+    if (!checked) {
+        return windowMenuItemLabel(win, label);
+    }
+    strcpy(buffer, "  *  ");
+    strncpy(buffer + 5, label, 74);
+    buffer[79] = '\0';
+    nk_style_push_vec2(win->nk, &win->nk->style.contextual_button.padding, nk_vec2(4 * win->screenScaleX, 4 * win->screenScaleY));
+    result = nk_menu_item_label(win->nk, buffer, NK_TEXT_ALIGN_LEFT);
+    nk_style_pop_vec2(win->nk);
+    return result;
+}

window.h

@@ -0,0 +1,41 @@
+#ifndef SHROOMS_VB_NATIVE_WINDOW_
+#define SHROOMS_VB_NATIVE_WINDOW_
+
+#include <SDL2/SDL.h>
+#include "nuklear.h"
+
+typedef struct WindowContext {
+    SDL_Window *window;
+    float screenSizeMultiplier;
+    float screenScaleX, screenScaleY;
+    SDL_Renderer *renderer;
+    SDL_Texture *leftEye;
+    SDL_Texture *rightEye;
+    struct nk_context *nk;
+    struct nk_font *font;
+} WindowContext;
+
+int windowInit(WindowContext *win, const char *title);
+void windowDestroy(WindowContext *win);
+
+float windowGetScreenSizeMultiplier(WindowContext *win);
+void windowSetScreenSizeMultiplier(WindowContext *win, float multiplier);
+void windowUpdate(WindowContext *win, const uint8_t *left, const uint8_t *right);
+
+int windowScaleX(WindowContext *win, int x);
+int windowScaleY(WindowContext *win, int y);
+int windowGetMenuHeight(WindowContext *win);
+int windowGetScreenHeight(WindowContext *win);
+
+void windowDisplayBegin(WindowContext *win);
+void windowDisplayEnd(WindowContext *win);
+bool windowGuiBegin(WindowContext *win, const char *title);
+void windowGuiEnd(WindowContext *win);
+void windowMenubarBegin(WindowContext *win, const char **items);
+void windowMenubarEnd(WindowContext *win);
+bool windowMenuBegin(WindowContext *win, const char *label, int width);
+void windowMenuEnd(WindowContext *win);
+bool windowMenuItemLabel(WindowContext *win, const char *label);
+bool windowMenuItemLabelChecked(WindowContext *win, const char *label, bool checked);
+
+#endif