Update jerryscript each frame.

assets/init.js

@@ -10,12 +10,16 @@ const platformNames = {
 
 Console.print('Platform: ' + (platformNames[System.platform] || 'Unknown'));
 
-const test = require('test.js');
+// Testing async/await
-Console.print(test.str());
+async function testAsync() {
-test.increment();
+  Console.print('Testing async/await...');
-Console.print(test.str());
+  await new Promise(resolve => requestAnimationFrame(resolve));
-test.decrement();
+  Console.print('First await done!');
-Console.print(test.str());
+  await new Promise(resolve => setTimeout(resolve, 1000));
+  Console.print('Async/await works!');
+}
+
+testAsync();
 
 // Scene.set('testscene.js');
 // Console.print('Loading scene...');

assets/test.js

@@ -1,15 +0,0 @@
-Console.print('test included');
-
-var x = 1  + 2;
-
-module.exports = {
-  str: function() {
-    return x.toString();
-  },
-  increment: function() {
-    x++;
-  },
-  decrement: function() {
-    x--;
-  }
-}

src/dusk/engine/engine.c

@@ -78,6 +78,7 @@ errorret_t engineUpdate(void) {
   errorChain(cutsceneUpdate());
   sceneUpdate();
   errorChain(assetUpdate());
+  errorChain(scriptUpdate());
 
   if(inputPressed(INPUT_ACTION_RAGEQUIT)) ENGINE.running = false;
   errorOk();

src/dusk/script/script.c

@@ -27,6 +27,27 @@ errorret_t scriptInit(void) {
   errorOk();
 }
 
+errorret_t scriptUpdate() {
+  jerry_value_t ret = jerry_run_jobs();
+  
+  if(jerry_value_is_exception(ret)) {
+    char_t buf[256];
+    jerry_value_t errVal = jerry_exception_value(ret, false);
+    jerry_value_t errStr = jerry_value_to_string(errVal);
+    jerry_size_t len = jerry_string_to_buffer(
+      errStr, JERRY_ENCODING_UTF8, (jerry_char_t *)buf, sizeof(buf) - 1
+    );
+    buf[len] = '\0';
+    jerry_value_free(errStr);
+    jerry_value_free(errVal);
+    jerry_value_free(ret);
+    errorThrow("Script error: %s", buf);
+  }
+
+  jerry_value_free(ret);
+  errorOk();
+}
+
 errorret_t scriptExecString(const char_t *source) {
   assertNotNull(source, "Source cannot be NULL");
   assertTrue(SCRIPT.initialized, "Script system not initialized");

src/dusk/script/script.h

@@ -22,6 +22,14 @@ extern script_t SCRIPT;
  */
 errorret_t scriptInit(void);
 
+/**
+ * Updates the script system, running any pending jobs. This should be called
+ * once per frame.
+ *
+ * @return Any error that occurred.
+ */
+errorret_t scriptUpdate(void);
+
 /**
  * Evaluates a JS source string in the global scope.
  *