From aa8f9e28a2d43f025d031af571efbd897630a7a5 Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Thu, 28 Nov 2013 19:37:24 +0000
Subject: (svn r26134) -Fix [FS#5820]: aircraft crashing near the map's border
 due to a lack of airports could trigger an assertion in most builds

---
 src/aircraft_cmd.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/aircraft_cmd.cpp b/src/aircraft_cmd.cpp
index e5dea8b75..ee89fbf0d 100644
--- a/src/aircraft_cmd.cpp
+++ b/src/aircraft_cmd.cpp
@@ -1032,7 +1032,7 @@ static bool HandleCrashedAircraft(Aircraft *v)
 
 	/* make aircraft crash down to the ground */
 	if (v->crashed_counter < 500 && st == NULL && ((v->crashed_counter % 3) == 0) ) {
-		int z = GetSlopePixelZ(v->x_pos, v->y_pos);
+		int z = GetSlopePixelZ(Clamp(v->x_pos, 0, MapMaxX() * TILE_SIZE), Clamp(v->y_pos, 0, MapMaxY() * TILE_SIZE));
 		v->z_pos -= 1;
 		if (v->z_pos == z) {
 			v->crashed_counter = 500;
-- 
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