added framerate lock

src/main.rs

@@ -1,6 +1,8 @@
 
 use std::rc::Rc;
 use std::sync::Arc;
+use std::thread;
+use std::time::{Duration, Instant};
 
 use glow::HasContext;
 
@@ -115,6 +117,8 @@ fn main() {
     // TODO write bevy Init code here
 
     let _ = event_loop.run(move |event, control_flow| {
+        // new_frame for Framerate Locking
+        let new_frame = Instant::now() + Duration::from_secs_f32(1.0/60.0);
         match event
         {
             Event::WindowEvent { event, .. } => {
@@ -141,5 +145,8 @@ fn main() {
             _ => ()
 
         }
+
+        // will wait until it's time for the next frame
+        thread::sleep(Instant::now() - new_frame);
     });
 }