From 17c01a36a736adc9b64e0916ea2bfed3355a5533 Mon Sep 17 00:00:00 2001
From: IntelOrca <ted@brambles.org>
Date: Thu, 7 Jan 2016 23:16:17 +0000
Subject: [PATCH] don't paint track of an invalid ride, should help reduce
 crashes

---
 src/interface/viewport.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/interface/viewport.c b/src/interface/viewport.c
index dd1f9da2f7..f1c13955ae 100644
--- a/src/interface/viewport.c
+++ b/src/interface/viewport.c
@@ -1531,6 +1531,10 @@ void viewport_track_paint_setup(uint8 direction, int height, rct_map_element *ma
 
 	rideIndex = mapElement->properties.track.ride_index;
 	ride = GET_RIDE(rideIndex);
+	if (ride->type == RIDE_TYPE_NULL) {
+		log_error("Attempted to paint invalid ride: %d", rideIndex);
+		return;
+	}
 
 	// HACK Set entrance style to plain if none to stop glitch until entrance track piece is implemented
 	bool isEntranceStyleNone = false;