From 2beba605306dbbf5339c52432282ca339bc93acc Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Wed, 23 Mar 2016 00:45:58 +0900
Subject: [PATCH] examples/windowsize: Bug fix: screen size must be positive

---
 examples/windowsize/main.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/windowsize/main.go b/examples/windowsize/main.go
index dd773f47e..3a8f379da 100644
--- a/examples/windowsize/main.go
+++ b/examples/windowsize/main.go
@@ -62,12 +62,12 @@ func update(screen *ebiten.Image) error {
 		screenHeight += d
 	}
 	if keyStates[ebiten.KeyDown] == 1 {
-		if 16 < screenHeight {
+		if 16 < screenHeight && d < screenHeight {
 			screenHeight -= d
 		}
 	}
 	if keyStates[ebiten.KeyLeft] == 1 {
-		if 16 < screenWidth {
+		if 16 < screenWidth && d < screenWidth {
 			screenWidth -= d
 		}
 	}