FStateVirtualID.h

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#pragma once
 
#include <state/FStateID.h>
 
template <typename T>
class FStateVirtualID : public FStateID<T>
{
public:
    typedef typename FStateID<T>::FunctionPtr FunctionPtr;
 
public:
    FStateVirtualID(FunctionPtr initialize, FunctionPtr execute, FunctionPtr finalize, const StateID& super_id)
        : FStateID<T>(initialize, execute, finalize)
        , mSuperID(&super_id)
    {
    }
 
    ~FStateVirtualID() override
    {
    }
 
    s32 number() const override
    {
        if (!mSuperID->isNull())
            return mSuperID->number();
 
        return this->mNumber;
    }
 
    const StateID* superID() const
    {
        return mSuperID;
    }
 
protected:
    const StateID* mSuperID;
};
 
#define DECLARE_STATE_VIRTUAL_ID_BASE(CLASS, NAME)
    static FStateVirtualID<CLASS> StateID_##NAME;
    virtual void initializeState_##NAME();
    virtual void executeState_##NAME();
    virtual void finalizeState_##NAME();
 
#define DECLARE_STATE_VIRTUAL_ID_OVERRIDE(CLASS, NAME)
    static FStateVirtualID<CLASS> StateID_##NAME;
    void initializeState_##NAME() override;
    void executeState_##NAME() override;
    void finalizeState_##NAME() override;
 
#define CREATE_STATE_VIRTUAL_ID_BASE(CLASS, NAME)
    FStateVirtualID<CLASS> CLASS::StateID_##NAME
        (&CLASS::initializeState_##NAME,
         &CLASS::executeState_##NAME,
         &CLASS::finalizeState_##NAME,
         StateID::cNull);
 
#define CREATE_STATE_VIRTUAL_ID_OVERRIDE(CLASS, BASE, NAME)
    FStateVirtualID<CLASS> CLASS::StateID_##NAME
        (&CLASS::initializeState_##NAME,
         &CLASS::executeState_##NAME,
         &CLASS::finalizeState_##NAME,
         BASE::StateID_##NAME);