mirror of https://github.com/OpenTTD/OpenTTD.git
Fix #7469: Desync when using build and refit feature.
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@ -31,6 +31,7 @@
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#include "ship.h"
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#include "newgrf.h"
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#include "company_base.h"
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#include "core/random_func.hpp"
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#include "table/strings.h"
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@ -131,6 +132,11 @@ CommandCost CmdBuildVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint
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DoCommandFlag subflags = flags;
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if (refitting) subflags |= DC_EXEC;
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/* Vehicle construction needs random bits, so we have to save the random
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* seeds to prevent desyncs. */
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SavedRandomSeeds saved_seeds;
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if (flags != subflags) SaveRandomSeeds(&saved_seeds);
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Vehicle *v = NULL;
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switch (type) {
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case VEH_TRAIN: value.AddCost(CmdBuildRailVehicle(tile, subflags, e, GB(p1, 24, 8), &v)); break;
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@ -179,6 +185,8 @@ CommandCost CmdBuildVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1, uint
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}
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}
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if (flags != subflags) RestoreRandomSeeds(saved_seeds);
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return value;
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}
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