From c233dc08c148792eddd7b219ff17bb0f7223a8b0 Mon Sep 17 00:00:00 2001
From: terkhen <terkhen@openttd.org>
Date: Sat, 10 Apr 2010 19:30:38 +0000
Subject: (svn r19599) -Fix [FS#3751]: Vehicles with a weight of zero crashed
 the game when using realistic acceleration.

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

diff --git a/src/ground_vehicle.cpp b/src/ground_vehicle.cpp
index 419d9483b..395f0c26b 100644
--- a/src/ground_vehicle.cpp
+++ b/src/ground_vehicle.cpp
@@ -80,7 +80,7 @@ void GroundVehicle<T, Type>::CargoChanged()
 	}
 
 	/* Store consist weight in cache. */
-	this->acc_cache.cached_weight = weight;
+	this->acc_cache.cached_weight = max<uint32>(1, weight);
 
 	/* Now update vehicle power (tractive effort is dependent on weight). */
 	this->PowerChanged();
-- 
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