From a61d32161501bd5758232e7f4745e9b320b65b01 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9?= <andrebq@gmail.com>
Date: Sun, 14 Jun 2020 17:52:03 +0200
Subject: [PATCH 1/3] expose glfw.WaitEvent using Window.WaitInput

---
 pixelgl/input.go | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/pixelgl/input.go b/pixelgl/input.go
index 541afb1..a0aa8e9 100644
--- a/pixelgl/input.go
+++ b/pixelgl/input.go
@@ -1,6 +1,8 @@
 package pixelgl
 
 import (
+	"time"
+
 	"github.com/faiface/mainthread"
 	"github.com/faiface/pixel"
 	"github.com/go-gl/glfw/v3.3/glfw"
@@ -408,7 +410,24 @@ func (w *Window) UpdateInput() {
 	mainthread.Call(func() {
 		glfw.PollEvents()
 	})
+	w.doUpdateInput()
+}
 
+// WaitInput blocks until an event is received or a timeout. If timeout is 0
+// then it will wait indefinitely
+func (w *Window) WaitInput(timeout time.Duration) {
+	mainthread.Call(func() {
+		if timeout == 0 {
+			glfw.WaitEvents()
+		} else {
+			glfw.WaitEventsTimeout(timeout.Seconds())
+		}
+	})
+	w.doUpdateInput()
+}
+
+// internal input bookkeeping
+func (w *Window) doUpdateInput() {
 	w.prevInp = w.currInp
 	w.currInp = w.tempInp
 

From 1f914181d8c5ed1545871c25256c5b874b61d43e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9?= <andrebq@gmail.com>
Date: Sun, 14 Jun 2020 18:28:14 +0200
Subject: [PATCH 2/3] add entry to CHANGELOG

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 958c75f..f76339c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Support setting an initial window position
 - Support hiding the window initially
 - Support creating maximized windows
+- Support waiting for events to reduce CPU load
 
 ## [v0.10.0-beta] 2020-05-10
 - Add `WindowConfig.TransparentFramebuffer` option to support window transparency onto the background

From 6cef9cf77991bc69afdd57ce504fd86ca17aa8fd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9?= <andrebq@gmail.com>
Date: Tue, 16 Jun 2020 21:11:41 +0200
Subject: [PATCH 3/3] rename method and handle negative timeouts

---
 pixelgl/input.go | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pixelgl/input.go b/pixelgl/input.go
index a0aa8e9..22468ef 100644
--- a/pixelgl/input.go
+++ b/pixelgl/input.go
@@ -413,11 +413,11 @@ func (w *Window) UpdateInput() {
 	w.doUpdateInput()
 }
 
-// WaitInput blocks until an event is received or a timeout. If timeout is 0
+// UpdateInputWait blocks until an event is received or a timeout. If timeout is 0
 // then it will wait indefinitely
-func (w *Window) WaitInput(timeout time.Duration) {
+func (w *Window) UpdateInputWait(timeout time.Duration) {
 	mainthread.Call(func() {
-		if timeout == 0 {
+		if timeout <= 0 {
 			glfw.WaitEvents()
 		} else {
 			glfw.WaitEventsTimeout(timeout.Seconds())