From 4a539a2210b90f4580adb46f9f8df7da2a391c29 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Sat, 27 Mar 2021 17:50:14 -0400
Subject: ball: Keep angle in [0, 360)

---
diff --git a/src/ball.c b/src/ball.c
index 767b565..14ee8de 100644
--- a/src/ball.c
+++ b/src/ball.c
@@ -87,7 +87,7 @@ db_balls_move(struct db_ball *ball)
 		ball->x += cos(ball->a * (M_PI / 180));
 		ball->y += sin(ball->a * (M_PI / 180));
 	} else {
-		ball->a += ball->d * ball->s;
+		ball->a  = fmod(ball->a + ball->d * ball->s, 360);
 		ball->x  = ball->cx + cos(ball->a * (M_PI / 180)) * ball->sr;
 		ball->y  = ball->cy + sin(ball->a * (M_PI / 180)) * ball->sr;
 		db_dbg("Spinning ball angle %f (speed %f, direction %d)",
--
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