From: Armaan Bhojwani <me@armaanb.net>
Date: Sun, 16 May 2021 02:34:30 +0000 (-0400)
Subject: Sleep during loops
X-Git-Url: https://git.armaanb.net/?p=pong.git;a=commitdiff_plain;h=c8a444f1416c62879ad1d3ffb97019c25d24d79d

Sleep during loops

Doesn't max out the CPU
---

diff --git a/pong.c b/pong.c
index 0a75050..c158607 100644
--- a/pong.c
+++ b/pong.c
@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <sys/time.h>
+#include <sys/select.h>
 #include <time.h>
 #include <math.h>
 
@@ -35,6 +36,14 @@ randsign(void)
 	return pow(-1, rand());
 }
 
+void
+msleep(void)
+{
+	struct timeval timeout;
+	timeout.tv_usec = 10000;
+	select(NULL, NULL, NULL, NULL, &timeout); // Sleep 100 ms
+}
+
 int
 main(void) {
 	srand((unsigned int)time(NULL));
@@ -95,6 +104,7 @@ main(void) {
 				} else if (key == 'q') {
 					die(0);
 				}
+				msleep();
 			}
 		}
 
@@ -177,5 +187,6 @@ main(void) {
 			mvprintw(y, x, " ");
 			y = (y == max_y) ? max_y - 1 : 1;
 		}
+		msleep();
 	}
 }