Trigger.h

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#pragma once
 
 
#include "objects/wrappers/AutoPtr.h"
#include "system/Statistics.h"
 
NAMESPACE_SPH_BEGIN
 
enum class TriggerEnum {
    ONE_TIME,  
    REPEATING, 
};
 
class ITrigger : public Polymorphic {
public:
    virtual TriggerEnum type() const = 0;
 
    virtual bool condition(const Storage& storage, const Statistics& stats) = 0;
 
    virtual AutoPtr<ITrigger> action(Storage& storage, Statistics& stats) = 0;
};
 
class PeriodicTrigger : public ITrigger {
private:
    Float _period;
    Float _lastAction;
 
public:
    explicit PeriodicTrigger(const Float period, const Float startTime)
        : _period(period)
        , _lastAction(startTime - EPS) {}
 
    virtual TriggerEnum type() const override {
        return TriggerEnum::REPEATING;
    }
 
    virtual bool condition(const Storage& UNUSED(storage), const Statistics& stats) override {
        const Float t = stats.get<Float>(StatisticsId::RUN_TIME);
        if (t > _lastAction + _period) {
            _lastAction = t;
            return true;
        } else {
            return false;
        }
    }
};
 
NAMESPACE_SPH_END