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Add fast path to vehicle var 0x42 if only upper byte is required

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This commit is contained in:
Jonathan G Rennison
2021-05-20 18:34:06 +01:00
parent aa0c1ba2e0
commit a8157770df
2 changed files with 19 additions and 1 deletions
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19
src/newgrf_engine.cpp
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@@ -589,6 +589,19 @@ static uint32 VehicleGetVariable(Vehicle *v, const VehicleScopeResolver *object,
return v->grf_cache.position_same_id_length;
case 0x42: { // Consist cargo information
if ((extra->mask & 0x00FFFFFF) == 0) {
if (!HasBit(v->grf_cache.cache_valid, NCVV_CONSIST_CARGO_INFORMATION_UD)) {
byte user_def_data = 0;
if (v->type == VEH_TRAIN) {
for (const Vehicle *u = v; u != nullptr; u = u->Next()) {
user_def_data |= Train::From(u)->tcache.user_def_data;
}
}
SB(v->grf_cache.consist_cargo_information, 24, 8, user_def_data);
SetBit(v->grf_cache.cache_valid, NCVV_CONSIST_CARGO_INFORMATION_UD);
}
return (v->grf_cache.consist_cargo_information & 0xFF000000);
}
if (!HasBit(v->grf_cache.cache_valid, NCVV_CONSIST_CARGO_INFORMATION)) {
const Vehicle *u;
byte cargo_classes = 0;
@@ -642,6 +655,7 @@ static uint32 VehicleGetVariable(Vehicle *v, const VehicleScopeResolver *object,
* which will need different translations */
v->grf_cache.consist_cargo_information = cargo_classes | (common_cargo_type << 8) | (common_subtype << 16) | (user_def_data << 24);
SetBit(v->grf_cache.cache_valid, NCVV_CONSIST_CARGO_INFORMATION);
SetBit(v->grf_cache.cache_valid, NCVV_CONSIST_CARGO_INFORMATION_UD);
}
/* The cargo translation is specific to the accessing GRF, and thus cannot be cached. */
@@ -1569,7 +1583,10 @@ void FillNewGRFVehicleCache(const Vehicle *v)
{ 0x43, NCVV_COMPANY_INFORMATION },
{ 0x4D, NCVV_POSITION_IN_VEHICLE },
};
static_assert(NCVV_END == lengthof(cache_entries));
static const int partial_cache_entries[] = {
NCVV_CONSIST_CARGO_INFORMATION_UD,
};
static_assert(NCVV_END == lengthof(cache_entries) + lengthof(partial_cache_entries));
/* Resolve all the variables, so their caches are set. */
for (size_t i = 0; i < lengthof(cache_entries); i++) {