From b458c0c88d3870dd723fe499b6388ab5733bb9ee Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Tue, 28 Apr 2020 22:55:48 +0100
Subject: [PATCH] Fix free wagon re-arrangement when estimating train build and
 refit cost

See: #149
---
 src/vehicle_cmd.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/vehicle_cmd.cpp b/src/vehicle_cmd.cpp
index b6ebfc180d..ebe808cf26 100644
--- a/src/vehicle_cmd.cpp
+++ b/src/vehicle_cmd.cpp
@@ -137,6 +137,7 @@ CommandCost CmdBuildVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint
 	 * test it. */
 	DoCommandFlag subflags = flags;
 	if (refitting) subflags |= DC_EXEC;
+	if (refitting && (flags & DC_EXEC) == 0 && type == VEH_TRAIN) SetBit(p1, 16);
 
 	/* Vehicle construction needs random bits, so we have to save the random
 	 * seeds to prevent desyncs. */