From: Holger Schemel <info@artsoft.org>
Date: Mon, 15 Feb 2021 23:20:27 +0000 (+0100)
Subject: added persistent personal game data for Emscripten platform
X-Git-Tag: 4.2.3.0~12
X-Git-Url: https://git.artsoft.org/?a=commitdiff_plain;h=ba6af23b5637bcd5fa4e247dc336b45ba1e6fd1a;p=rocksndiamonds.git

added persistent personal game data for Emscripten platform
---

diff --git a/src/Makefile b/src/Makefile
index e525f1f0..39029a0c 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -97,7 +97,7 @@ ifeq ($(PLATFORM),emscripten)
 SDL_LIBS = -s USE_SDL_IMAGE=2 -s USE_SDL_MIXER=2 -s USE_SDL_NET=2 -s USE_ZLIB=1
 SDL_FMTS = -s SDL2_IMAGE_FORMATS='["bmp","png","pcx","xpm"]'
 EXTRA_CFLAGS = $(SDL_LIBS)
-EXTRA_LDFLAGS = $(SDL_FMTS) -s INITIAL_MEMORY=81920000 -s ALLOW_MEMORY_GROWTH=1 --preload-file ../graphics/ --preload-file ../sounds/ --preload-file ../levels/ --preload-file ../music/ -s NO_EXIT_RUNTIME=0 -s ASYNCIFY -O2
+EXTRA_LDFLAGS = $(SDL_FMTS) -s INITIAL_MEMORY=81920000 -s ALLOW_MEMORY_GROWTH=1 --preload-file ../graphics/ --preload-file ../sounds/ --preload-file ../levels/ --preload-file ../music/ -s NO_EXIT_RUNTIME=0 -s ASYNCIFY -O2 -lidbfs.js
 else
 SDL_LIBS = -lSDL2_image -lSDL2_mixer -lSDL2_net
 endif
diff --git a/src/libgame/setup.c b/src/libgame/setup.c
index a135b0d5..dc470a81 100644
--- a/src/libgame/setup.c
+++ b/src/libgame/setup.c
@@ -1511,6 +1511,8 @@ char *getHomeDir(void)
     if (!SUCCEEDED(SHGetFolderPath(NULL, CSIDL_PERSONAL, NULL, 0, dir)))
       strcpy(dir, ".");
   }
+#elif defined(PLATFORM_EMSCRIPTEN)
+  dir = "/persistent";
 #elif defined(PLATFORM_UNIX)
   if (dir == NULL)
   {
diff --git a/src/libgame/system.c b/src/libgame/system.c
index e852d2ed..a2f7ebec 100644
--- 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,
diff --git a/src/libgame/system.h b/src/libgame/system.h
index 9b3dfe75..8ebd43dc 100644
--- a/src/libgame/system.h
+++ b/src/libgame/system.h
@@ -22,6 +22,8 @@
 #include "windows.h"
 #elif defined(PLATFORM_ANDROID)
 #include "android.h"
+#elif defined(PLATFORM_EMSCRIPTEN)
+#include "emscripten.h"
 #endif
 
 #include "sdl.h"
diff --git a/src/screens.c b/src/screens.c
index 81a54b06..0ce46341 100644
--- a/src/screens.c
+++ b/src/screens.c
@@ -1739,6 +1739,16 @@ void DrawMainMenu(void)
   SetMouseCursor(CURSOR_DEFAULT);
 
   OpenDoor(DOOR_CLOSE_1 | DOOR_OPEN_2);
+
+#if defined(PLATFORM_EMSCRIPTEN)
+  EM_ASM
+  (
+    FS.syncfs(function(err)
+    {
+      assert(!err);
+    });
+  );
+#endif
 }
 
 static void gotoTopLevelDir(void)