init emscripten dbfs before app start

Author: nesbox

cmake/sokol.cmake

@@ -16,6 +16,8 @@ if(BUILD_SOKOL)
         target_compile_definitions(sokol PUBLIC SOKOL_D3D11 UNICODE)
     elseif(EMSCRIPTEN)
 
+        target_compile_definitions(sokol PUBLIC SOKOL_NO_ENTRY)
+        
         if(BUILD_SOKOL_WEBGPU)
             target_compile_definitions(sokol PUBLIC SOKOL_WGPU)
             target_compile_options(sokol PRIVATE --use-port=emdawnwebgpu)

src/system/sokol/main.c

@@ -1011,7 +1011,7 @@ static const sapp_icon_desc iconDesc(App *app)
         };
 }
 
-sapp_desc sokol_main(s32 argc, char* argv[])
+sapp_desc sokol_start(s32 argc, char* argv[])
 {
     App *app = NEW(App);
     memset(app, 0, sizeof *app);
@@ -1029,19 +1029,6 @@ sapp_desc sokol_main(s32 argc, char* argv[])
 
     const char* path = ssys_app_folder(TIC_PACKAGE, TIC_NAME);
 
-#if defined(__TIC_EMSCRIPTEN__)
-    EM_ASM_
-    (
-        {
-            var dir = UTF8ToString($0);
-            FS.mkdirTree(dir);
-            FS.mount(IDBFS, {}, dir);
-            FS.syncfs(true, function(err) {});
-
-        }, path
-    );
-#endif
-
     app->studio = studio_create(argc, argv, cli ? TIC80_SAMPLERATE : saudio_sample_rate(),
         TIC80_PIXEL_COLOR_RGBA8888, path, INT32_MAX, app);
 

src/system/sokol/sokol.c

@@ -23,3 +23,48 @@
 #define SOKOL_IMPL
 
 #include "sokol.h"
+
+extern sapp_desc sokol_start(int argc, char* argv[]);
+
+static void start(int argc, char* argv[])
+{
+    sapp_desc desc = sokol_start(argc, argv);
+    sapp_run(&desc);
+}
+
+#if defined(SOKOL_NO_ENTRY)
+
+int main(int argc, char* argv[]) 
+{
+#if defined(__EMSCRIPTEN__)
+
+    EM_ASM_
+    (
+        {
+            var dir = 'com.nesbox.tic/TIC-80/';
+            FS.mkdirTree(dir);
+            FS.mount(IDBFS, {}, dir);
+            FS.syncfs(true, function(err) {
+                dynCall('vip', $0, [$1, $2]);
+            });
+
+        }, start, argc, argv
+    );
+
+#else
+
+    start(argc, argv)
+
+#endif
+
+    return 0;
+}
+
+#else
+
+sapp_desc sokol_main(s32 argc, char* argv[])
+{
+    return sokol_start(argc, argv);
+}
+
+#endif