Working HTML5 version

game/main.c

@@ -17,6 +17,9 @@
 #include "pathfinding.h"
 #include "sounds.h"
 
+// Constants
+const char *SETTINGS_PATH = "settings.ini";
+// Constants end
 
 ECS_COMPONENT_DECLARE(Game);
 ECS_COMPONENT_DECLARE(InputState);
@@ -32,7 +35,20 @@ void update(float dt, void *userData);
 void render(float dt, void *userData);
 void imguiRender(float dt, void *userData);
 
+static bool loopPaused = true;
 
+extern void loopPause(void) {
+    loopPaused = true;
+}
+extern void loopResume(void) {
+    loopPaused = false;
+
+}
+
+
+#ifdef EMSCRIPTEN
+#include <emscripten.h>
+#endif
 bool bzMain(BzAppDesc *appDesc, int argc, const char **argv) {
     appDesc->width = 1280;
     appDesc->height = 720;
@@ -48,6 +64,25 @@ bool bzMain(BzAppDesc *appDesc, int argc, const char **argv) {
     appDesc->userData = NULL;
 
     //SetConfigFlags(FLAG_WINDOW_RESIZABLE);
+#ifdef EMSCRIPTEN
+    EM_ASM(
+        FS.mkdir('/game');
+        FS.mount(IDBFS, {}, '/game');
+        FS.syncfs(true, function (err) {
+            console.log("resumed");
+            Module.ccall('loopResume', 'void', ['void']);
+        });
+        console.log('/game mounted');
+        /*
+         * Note: FS.syncfs is async so we need to pause the
+         * main loop until it finishes :/
+         */
+        Module.ccall('loopPause', 'void', ['void']);
+    );
+    loopPaused = true;
+#else
+    loopPaused = false;
+#endif
 
     return true;
 }
@@ -63,14 +98,42 @@ int cmpDrawData(const void *a, const void *b) {
     return cmpVal;
 }
 
+
 bool serializeOptions(const char *path, const Options *opts) {
+
+#ifdef EMSCRIPTEN
+    char buf[4096];
+    snprintf(buf, sizeof(buf), "%s%s", "/game/", path);
+    path = buf;
+#endif
+    bzLogInfo("write path: %s", path);
     FILE *f = fopen(path, "w");
+    if (!f) return false;
     size_t numWritten = fwrite(opts, sizeof(*opts), 1, f);
     fclose(f);
+#ifdef EMSCRIPTEN
+    // Sync FS
+    EM_ASM(
+        FS.syncfs(false, function (err) {
+        });
+    );
+
+#endif
     return numWritten == 1;
 }
+
 bool deserializeOptions(const char *path, Options *optsOut) {
+#ifdef EMSCRIPTEN
+    char buf[4096];
+    snprintf(buf, sizeof(buf), "%s%s", "/game/", path);
+    path = buf;
+#endif
+    bzLogInfo("read path: %s", path);
+
     FILE *f = fopen(path, "r");
+    bzLogInfo("start reading");
+    if (!f) return false;
+    bzLogInfo("reading");
     Options opts;
     size_t numRead = fread(&opts, sizeof(opts), 1, f);
     fclose(f);
@@ -143,7 +206,7 @@ bool init(void *userData) {
     }
     setScreen(game, SCREEN_MAIN_MENU);
 
-    game->stackAlloc = bzStackAllocCreate(10 * 1000 * 1000); // 10 MB
+    game->stackAlloc = bzStackAllocCreate(1 * 1000 * 1000); // 1 MB
     // init pools
     game->pools.pathData = bzObjectPoolCreate(&(BzObjectPoolDesc) {
         .objectSize = sizeof(PathData),
@@ -252,22 +315,12 @@ bool init(void *userData) {
     loadMap(game, "assets/maps/main_menu_01.tmj");
 
 
-    game->debug.drawMapColliders = true;
-    game->debug.drawSpatialGrid = true;
-    game->debug.drawPath = true;
+    game->debug.drawMapColliders = false;
+    game->debug.drawSpatialGrid = false;
+    game->debug.drawPath = false;
     game->debug.inspecting = bzArrayCreate(ecs_entity_t, 10);
 
 
-    // Load settings
-    const char *workDir = GetApplicationDirectory();
-    char buf[FILENAME_MAX];
-    snprintf(buf, sizeof(buf), "%s%s", workDir, "settings");
-    Options opts;
-    if (deserializeOptions(buf, &opts)) {
-        game->options = opts;
-    } else {
-        game->options = getDefaultOptions();
-    }
 
     return true;
 }
@@ -277,10 +330,7 @@ void deinit(void *userData) {
     InputState *input = ecs_singleton_get_mut(ECS, InputState);
     SoundState *sounds = ecs_singleton_get_mut(ECS, SoundState);
 
-    const char *workDir = GetApplicationDirectory();
-    char buf[FILENAME_MAX];
-    snprintf(buf, sizeof(buf), "%s%s", workDir, "settings");
-    serializeOptions(buf, &game->options);
+    serializeOptions(SETTINGS_PATH, &game->options);
 
     unloadMap(game);
 
@@ -320,6 +370,8 @@ void deinit(void *userData) {
 
 
 void update(float dt, void *userData) {
+    if (loopPaused)
+        return;
     BZ_UNUSED(userData);
 
     char titleBuf[32];
@@ -329,6 +381,22 @@ void update(float dt, void *userData) {
     Game       *game  = ecs_singleton_get_mut(ECS, Game);
     InputState *input = ecs_singleton_get_mut(ECS, InputState);
 
+    {
+        static bool optsLoaded = false;
+        if (!optsLoaded) {
+            // Load settings
+            const char *path = SETTINGS_PATH;
+            Options opts;
+            if (deserializeOptions(path, &opts)) {
+                game->options = opts;
+            } else {
+                game->options = getDefaultOptions();
+            }
+            optsLoaded = true;
+        }
+
+    }
+
     game->screenPrevFrame = game->screen;
     if (game->screen != game->nextScreen)
         game->screen = game->nextScreen;
@@ -487,6 +555,8 @@ static void renderGame(Game *game, float dt) {
 }
 
 void render(float dt, void *userData) {
+    if (loopPaused)
+        return;
     BZ_UNUSED(userData);
     Game *game = ecs_singleton_get_mut(ECS, Game);
 
@@ -600,9 +670,9 @@ void imguiRender(float dt, void *userData) {
 
     igSetNextWindowSize((ImVec2){300, 400}, ImGuiCond_FirstUseEver);
     igBegin("Debug Menu", NULL, 0);
-    igText("PathData    pool available: %llu", bzObjectPoolGetNumFree(game->pools.pathData));
-    igText("BTNode      pool available: %llu", bzObjectPoolGetNumFree(game->pools.btNode));
-    igText("BTNodeState pool available: %llu", bzObjectPoolGetNumFree(game->pools.btNodeState));
+    igText("PathData    pool available: %lu", bzObjectPoolGetNumFree(game->pools.pathData));
+    igText("BTNode      pool available: %lu", bzObjectPoolGetNumFree(game->pools.btNode));
+    igText("BTNodeState pool available: %lu", bzObjectPoolGetNumFree(game->pools.btNodeState));
     const char *inputState = "NONE";
     switch (input->state) {
         case INPUT_NONE: