From 08a8c3a773e9c730bd92a39e1e07403a172e866a Mon Sep 17 00:00:00 2001
From: frosch <frosch@openttd.org>
Date: Sat, 7 Jul 2012 15:39:46 +0000
Subject: (svn r24384) -Fix [FS#5188-ish]: Make IsInDepot() functions behave
 consistent across vehicle types and add IsChainInDepot instead, if that is
 what shall be checked.

---
 src/ground_vehicle.cpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'src/ground_vehicle.cpp')

diff --git a/src/ground_vehicle.cpp b/src/ground_vehicle.cpp
index 27e9776b9..5712b28f9 100644
--- a/src/ground_vehicle.cpp
+++ b/src/ground_vehicle.cpp
@@ -12,6 +12,7 @@
 #include "stdafx.h"
 #include "train.h"
 #include "roadveh.h"
+#include "depot_map.h"
 
 /**
  * Recalculates the cached total power of a vehicle. Should be called when the consist is changed.
@@ -164,6 +165,27 @@ int GroundVehicle<T, Type>::GetAcceleration() const
 	}
 }
 
+/**
+ * Check whether the whole vehicle chain is in the depot.
+ * @return true if and only if the whole chain is in the depot.
+ */
+template <class T, VehicleType Type>
+bool GroundVehicle<T, Type>::IsChainInDepot() const
+{
+	const T *v = this->First();
+	/* Is the front engine stationary in the depot? */
+	assert_compile((int)TRANSPORT_RAIL == (int)VEH_TRAIN);
+	assert_compile((int)TRANSPORT_ROAD == (int)VEH_ROAD);
+	if (!IsDepotTypeTile(v->tile, (TransportType)Type) || v->cur_speed != 0) return false;
+
+	/* Check whether the rest is also already trying to enter the depot. */
+	for (; v != NULL; v = v->Next()) {
+		if (!v->T::IsInDepot() || v->tile != this->tile) return false;
+	}
+
+	return true;
+}
+
 /* Instantiation for Train */
 template struct GroundVehicle<Train, VEH_TRAIN>;
 /* Instantiation for RoadVehicle */
-- 
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