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Elide vehicle random trigger callbacks

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This commit is contained in:
Jonathan G Rennison
2021-05-18 22:06:56 +01:00
parent 6ea97d6068
commit 55915d8d55
4 changed files with 28 additions and 8 deletions
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1
src/newgrf_commons.h
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@@ -338,6 +338,7 @@ enum SpriteGroupCallbacksUsed : uint8 {
SGCU_ALL = 0xFF,
SGCU_VEHICLE_32DAY_CALLBACK = 1 << 0,
SGCU_VEHICLE_REFIT_COST = 1 << 1,
SGCU_RANDOM_TRIGGER = 1 << 2,
};
DECLARE_ENUM_AS_BIT_SET(SpriteGroupCallbacksUsed)

11
src/newgrf_engine.cpp
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@@ -1378,6 +1378,8 @@ static void DoTriggerVehicle(Vehicle *v, VehicleTrigger trigger, byte base_rando
/* We can't trigger a non-existent vehicle... */
assert(v != nullptr);
uint32 reseed = 0;
if (Engine::Get(v->engine_type)->callbacks_used & SGCU_RANDOM_TRIGGER) {
VehicleResolverObject object(v->engine_type, v, VehicleResolverObject::WO_CACHED, false, CBID_RANDOM_TRIGGER);
object.waiting_triggers = v->waiting_triggers | trigger;
v->waiting_triggers = object.waiting_triggers; // store now for var 5F
@@ -1388,9 +1390,16 @@ static void DoTriggerVehicle(Vehicle *v, VehicleTrigger trigger, byte base_rando
/* Store remaining triggers. */
v->waiting_triggers = object.GetRemainingTriggers();
reseed = object.GetReseedSum();
} else {
v->waiting_triggers |= trigger;
const Engine *e = Engine::Get(v->engine_type);
if (!(e->grf_prop.spritegroup[v->cargo_type] || e->grf_prop.spritegroup[CT_DEFAULT])) return;
}
/* Rerandomise bits. Scopes other than SELF are invalid for rerandomisation. For bug-to-bug-compatibility with TTDP we ignore the scope. */
byte new_random_bits = Random();
uint32 reseed = object.GetReseedSum();
v->random_bits &= ~reseed;
v->random_bits |= (first ? new_random_bits : base_random_bits) & reseed;

8
src/newgrf_spritegroup.cpp
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@@ -341,6 +341,10 @@ void DeterministicSpriteGroup::AnalyseCallbacks(AnalyseCallbackOperation &op) co
op.callbacks_used |= SGCU_VEHICLE_REFIT_COST;
break;
case CBID_RANDOM_TRIGGER:
op.callbacks_used |= SGCU_RANDOM_TRIGGER;
break;
case CBID_VEHICLE_MODIFY_PROPERTY:
if (range.group != nullptr) {
AnalyseCallbackOperation cb36_op;
@@ -433,6 +437,10 @@ const SpriteGroup *RandomizedSpriteGroup::Resolve(ResolverObject &object) const
return SpriteGroup::Resolve(this->groups[index], object, false);
}
void RandomizedSpriteGroup::AnalyseCallbacks(AnalyseCallbackOperation &op) const
{
if (op.mode == ACOM_CB_VAR) op.callbacks_used |= SGCU_RANDOM_TRIGGER;
}
const SpriteGroup *RealSpriteGroup::Resolve(ResolverObject &object) const
{

2
src/newgrf_spritegroup.h
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@@ -219,6 +219,8 @@ struct RandomizedSpriteGroup : SpriteGroup {
std::vector<const SpriteGroup *> groups; ///< Take the group with appropriate index:
void AnalyseCallbacks(AnalyseCallbackOperation &op) const override;
protected:
const SpriteGroup *Resolve(ResolverObject &object) const;
};