added persistent personal game data for Emscripten platform

[rocksndiamonds.git] / src / libgame / system.c

diff --git a/src/libgame/system.c b/src/libgame/system.c
index e852d2ed4aa99eccc7bb282fc74c74a6cfafc1e3..a2f7ebeccd7d199716400db3fbeb14363f8fdbb4 100644 (file)
--- a/src/libgame/system.c
+++ b/src/libgame/system.c
@@ -104,6 +104,25 @@ void InitProgramInfo(char *argv0, char *config_filename, char *userdata_subdir,
   program.log_file[LOG_ERR_ID] = program.log_file_default[LOG_ERR_ID] = stderr;
 
   program.headless = FALSE;
+
+#if defined(PLATFORM_EMSCRIPTEN)
+  EM_ASM
+  (
+    Module.sync_done = 0;
+
+    FS.mkdir('/persistent');           // create persistent data directory
+    FS.mount(IDBFS, {}, '/persistent');        // mount with IDBFS filesystem type
+    FS.syncfs(true, function(err)      // sync persistent data into memory
+    {
+      assert(!err);
+      Module.sync_done = 1;
+    });
+  );
+
+  // wait for persistent data to be synchronized to memory
+  while (emscripten_run_script_int("Module.sync_done") == 0)
+    Delay(20);
+#endif
 }
 
 void InitNetworkInfo(boolean enabled, boolean connected, boolean serveronly,