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Add savegame flag for station tile cache flags

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Update flags as necessary on load and when reloading GRFs
This commit is contained in:
Jonathan G Rennison
2023-09-30 12:19:05 +01:00
parent b2a1ec96f1
commit df4c458c29
7 changed files with 74 additions and 19 deletions
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41
src/newgrf_station.cpp
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@@ -24,9 +24,11 @@
#include "newgrf_animation_base.h"
#include "newgrf_class_func.h"
#include "newgrf_extension.h"
#include "core/checksum_func.hpp"
#include "safeguards.h"
uint64 _station_tile_cache_hash = 0;
template <typename Tspec, typename Tid, Tid Tmax>
/* static */ void NewGRFClass<Tspec, Tid, Tmax>::InsertDefaults()
@@ -1089,3 +1091,42 @@ void DumpStationSpriteGroup(const StationSpec *statspec, BaseStation *st, DumpSp
}
}
}
void UpdateStationTileCacheFlags(bool force_update)
{
SimpleChecksum64 checksum;
for (uint i = 0; StationClass::IsClassIDValid((StationClassID)i); i++) {
StationClass *stclass = StationClass::Get((StationClassID)i);
checksum.Update(stclass->GetSpecCount());
for (uint j = 0; j < stclass->GetSpecCount(); j++) {
const StationSpec *statspec = stclass->GetSpec(j);
if (statspec == nullptr) continue;
checksum.Update(j);
checksum.Update(statspec->blocked);
checksum.Update(statspec->pylons);
checksum.Update(statspec->wires);
}
}
if (checksum.state != _station_tile_cache_hash || force_update) {
_station_tile_cache_hash = checksum.state;
for (TileIndex t = 0; t < MapSize(); t++) {
if (HasStationTileRail(t)) {
StationGfx gfx = GetStationGfx(t);
const StationSpec *statspec = GetStationSpec(t);
bool blocked = statspec != nullptr && HasBit(statspec->blocked, gfx);
/* Default stations do not draw pylons under roofs (gfx >= 4) */
bool pylons = statspec != nullptr ? HasBit(statspec->pylons, gfx) : gfx < 4;
bool wires = statspec == nullptr || !HasBit(statspec->wires, gfx);
SetStationTileBlocked(t, blocked);
SetStationTileHavePylons(t, pylons);
SetStationTileHaveWires(t, wires);
}
}
}
}