From 9307136fb81cde270f5c1e192a3aa5dc307c8dfe Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom.smeding@gmail.com>
Date: Thu, 8 Feb 2018 22:22:17 +0100
Subject: Be resistant against terminal resize

---
 main.c | 36 ++++++++++++++++++++++--------------
 1 file changed, 22 insertions(+), 14 deletions(-)

diff --git a/main.c b/main.c
index bc137c2..aa4a20e 100644
--- a/main.c
+++ b/main.c
@@ -7,6 +7,7 @@
 #include <sys/select.h>
 #include <sys/time.h>
 #include <unistd.h>
+#include <errno.h>
 #include <assert.h>
 #include "termio.h"
 
@@ -181,7 +182,6 @@ int main(void){
 	atexit(endkeyboard);
 	initscreen();
 	atexit(endscreen);
-	installCLhandler(true);
 	cursorvisible(false);
 
 	struct board bd;
@@ -208,7 +208,15 @@ int main(void){
 		memcpy(&timeout,&timeleft,sizeof timeout);
 
 		int ret=select(1,&inset,NULL,NULL,&timeout);
-		assert(ret>=0);
+		if(ret<0){
+			if(errno!=EINTR){
+				endscreen();
+				perror("select");
+				exit(1);
+			} else {
+				FD_ZERO(&inset);
+			}
+		}
 
 		struct timeval end;
 		gettimeofday(&end,NULL);
@@ -237,18 +245,18 @@ int main(void){
 			}
 		}
 
-		assert(FD_ISSET(0,&inset));
-
-		int key=tgetkey();
-		if(key=='Q'||key=='q')break;
-		else if(key=='S'||key=='s'||key==KEY_DOWN){
-			if(!advance(&bd))break;
-			timeleft.tv_sec=bd.delay/1000;
-			timeleft.tv_usec=bd.delay%1000*1000;
-		} else if(key=='A'||key=='a'||key==KEY_LEFT)move(&bd,-1);
-		else if(key=='D'||key=='d'||key==KEY_RIGHT)move(&bd,1);
-		else if(key=='W'||key=='w'||key==KEY_UP)rotR(&bd);
-		else bel();
+		if(FD_ISSET(0,&inset)){
+			int key=tgetkey();
+			if(key=='Q'||key=='q')break;
+			else if(key=='S'||key=='s'||key==KEY_DOWN){
+				if(!advance(&bd))break;
+				timeleft.tv_sec=bd.delay/1000;
+				timeleft.tv_usec=bd.delay%1000*1000;
+			} else if(key=='A'||key=='a'||key==KEY_LEFT)move(&bd,-1);
+			else if(key=='D'||key=='d'||key==KEY_RIGHT)move(&bd,1);
+			else if(key=='W'||key=='w'||key==KEY_UP)rotR(&bd);
+			else bel();
+		}
 	}
 
 	endscreen();
-- 
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