Migrate to SDL2 and deploy as WASM

web/pre.js

@@ -0,0 +1,60 @@
+Module.preRun = Module.preRun || [];
+Module.preRun.push(function () {
+    var released = false;
+
+    var exists = function (path) {
+        try {
+            FS.stat(path);
+            return true;
+        } catch (e) {
+            return false;
+        }
+    };
+
+    var release = function (err) {
+        if (released) return;
+        released = true;
+
+        if (err) console.warn('A mentesek betoltese nem sikerult:', err);
+
+        try {
+            if (!exists('/saves/rang.lst')) FS.writeFile('/saves/rang.lst', '');
+            if (!exists('/rang.lst')) FS.symlink('/saves/rang.lst', '/rang.lst');
+        } catch (e) {
+            console.warn('A ranglista nem elerheto:', e);
+        }
+
+        Module.removeRunDependency('persist');
+    };
+
+    Module.addRunDependency('persist');
+
+    try {
+        if (!exists('/saves')) FS.mkdir('/saves');
+        FS.mount(IDBFS, {}, '/saves');
+    } catch (e) {
+        console.warn('A tartos tarolas nem erheto el, a mentesek nem maradnak meg:', e);
+        release();
+        return;
+    }
+
+    setTimeout(release, 3000);
+    FS.syncfs(true, release);
+});
+
+Module.postRun = Module.postRun || [];
+Module.postRun.push(function () {
+    var flushing = false;
+    var flush = function () {
+        if (flushing) return;
+        flushing = true;
+        FS.syncfs(false, function (err) {
+            flushing = false;
+            if (err) console.warn('A mentes nem sikerult:', err);
+        });
+    };
+
+    setInterval(flush, 4000);
+    addEventListener('pagehide', flush);
+    addEventListener('visibilitychange', flush);
+});