game: add: PADDLE CAN MOVE

frontend/static/js/api/game/Time.js

@@ -0,0 +1,33 @@
+
+
+class Time
+{
+    constructor()
+    {
+        this._last_frame = undefined;
+        this._current_frame = undefined;
+    }
+
+    deltaTime()
+    {
+        return (this._current_frame - this._last_frame) !== NaN ? this._current_frame - this._last_frame : 0; 
+    }
+
+    deltaTimeSecond()
+    {
+        return this.deltaTime() / 1000;
+    }
+
+    get_fps()
+    {
+        return 1 / this.deltaTimeSecond();
+    }
+
+    new_frame()
+    {
+        this._last_frame = this._current_frame;
+        this._current_frame = Date.now();
+    }
+}
+
+export { Time }