Replace durtofl with recently stabilized duration_float

The duration_float feature will arrive in Rust 1.38.0 stable.

rust-lang/rust#54361

mehlon-server/lib.rs

@@ -213,7 +213,7 @@ impl<S :NetworkServerSocket> Server<S> {
 	/// Update the stored fps value and return the delta time
 	fn update_fps(&mut self) -> f32 {
 		let cur_time = Instant::now();
-		let float_delta = durtofl(cur_time - self.last_frame_time);
+		let float_delta = (cur_time - self.last_frame_time).as_secs_f32();
 		self.last_frame_time = cur_time;
 
 		const EPS :f32 = 0.1;
@@ -820,10 +820,6 @@ fn close_connections(conns_to_close :&[PlayerIdPair], connections :&mut HashMap<
 	}
 }
 
-fn durtofl(d :Duration) -> f32 {
-	d.as_millis() as f32 / 1_000.0
-}
-
 /// Block position to chunk position
 pub fn btchn(v :Vector3<isize>) -> Vector3<isize> {
 	fn r(x :isize) -> isize {

mehlon/client.rs

@@ -10,7 +10,7 @@ use glium_glyph::glyph_brush::{
 	rusttype::Font, Section,
 };
 use std::collections::{HashMap, VecDeque};
-use std::time::{Instant, Duration};
+use std::time::Instant;
 use std::thread;
 use std::sync::mpsc::{channel, Receiver};
 use std::sync::Arc;
@@ -211,7 +211,7 @@ impl<C :NetworkClientConn> Game<C> {
 	/// Update the stored fps value and return the delta time
 	fn update_fps(&mut self) -> f32 {
 		let cur_time = Instant::now();
-		let float_delta = durtofl(cur_time - self.last_frame_time);
+		let float_delta = (cur_time - self.last_frame_time).as_secs_f32();
 		self.last_frame_time = cur_time;
 
 		const EPS :f32 = 0.1;
@@ -875,10 +875,6 @@ fn hand_mesh(pos :Vector3<f32>, blk :MapBlock,
 	vertices
 }
 
-fn durtofl(d :Duration) -> f32 {
-	d.as_millis() as f32 / 1_000.0
-}
-
 fn clamp(a :f32, min :f32, max :f32) -> f32 {
 	if a > min {
 		if a < max {