From 8114bad0334f856e2d55be9fb5eb05c46c039960 Mon Sep 17 00:00:00 2001 From: peter1138 Date: Thu, 4 Apr 2019 22:37:18 +0100 Subject: Fix #7469: Desync when using build and refit feature. --- src/vehicle_cmd.cpp | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'src/vehicle_cmd.cpp') diff --git a/src/vehicle_cmd.cpp b/src/vehicle_cmd.cpp index 059f60837..eb7fc9654 100644 --- a/src/vehicle_cmd.cpp +++ b/src/vehicle_cmd.cpp @@ -31,6 +31,7 @@ #include "ship.h" #include "newgrf.h" #include "company_base.h" +#include "core/random_func.hpp" #include "table/strings.h" @@ -131,6 +132,11 @@ CommandCost CmdBuildVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint DoCommandFlag subflags = flags; if (refitting) subflags |= DC_EXEC; + /* Vehicle construction needs random bits, so we have to save the random + * seeds to prevent desyncs. */ + SavedRandomSeeds saved_seeds; + if (flags != subflags) SaveRandomSeeds(&saved_seeds); + Vehicle *v = NULL; switch (type) { case VEH_TRAIN: value.AddCost(CmdBuildRailVehicle(tile, subflags, e, GB(p1, 24, 8), &v)); break; @@ -179,6 +185,8 @@ CommandCost CmdBuildVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint } } + if (flags != subflags) RestoreRandomSeeds(saved_seeds); + return value; } -- cgit v1.2.3-54-g00ecf