metaforce/Runtime/RetroTypes.hpp

#ifndef __PSHAG_TYPES_HPP__
#define __PSHAG_TYPES_HPP__

#include <vector>
#include <utility>
#include <string>
#include "GCNTypes.hpp"
#include "rstl.hpp"
#include "DataSpec/DNACommon/DNACommon.hpp"
#include "IOStreams.hpp"

namespace urde
{

using FourCC = hecl::FourCC;
using TResId = u64;

struct SObjectTag
{
    FourCC type;
    TResId id = -1;
    operator bool() const {return id != -1;}
    bool operator!=(const SObjectTag& other) const {return id != other.id;}
    bool operator==(const SObjectTag& other) const {return id == other.id;}
    SObjectTag() = default;
    SObjectTag(FourCC tp, TResId rid) : type(tp), id(rid) {}
    SObjectTag(CInputStream& in)
    {
        in.readBytesToBuf(&type, 4);
        id = in.readUint32Big();
    }
};

/**
 * @brief singleton static-allocator
 */
template<class T>
class TOneStatic
{
    static u8 m_allocspace[sizeof(T)];
    static u32 m_refCount;
public:
    static T* GetAllocSpace() {return (T*)m_allocspace;}
    static u32& ReferenceCount() {return m_refCount;}
    T* operator->() const {return (T*)m_allocspace;}
    T& operator*() const {return *(T*)m_allocspace;}

    void* operator new(size_t) = delete;
    void operator delete(void*) = delete;

    template<typename U = T>
    TOneStatic(typename std::enable_if<!std::is_default_constructible<U>::value>::type* = 0)
    {++m_refCount;}
    template<typename U = T>
    TOneStatic(typename std::enable_if<std::is_default_constructible<U>::value>::type* = 0)
    {++m_refCount; new (m_allocspace) T();}

    template<typename... Args> TOneStatic(Args&&... args)
    {++m_refCount; new (m_allocspace) T(std::forward<Args>(args)...);}

    ~TOneStatic() {--m_refCount;}

    template<typename... Args> void reset(Args&&... args)
    {new (m_allocspace) T(std::forward<Args>(args)...);}
};
template<class T> u8 TOneStatic<T>::m_allocspace[sizeof(T)];
template<class T> u32 TOneStatic<T>::m_refCount;

using TUniqueId = u16;
using TEditorId = u32;
using TAreaId = u32;

#define kInvalidEditorId TEditorId(-1)
#define kInvalidUniqueId TUniqueId(-1)
#define kInvalidAreaId TAreaId(-1)

}

namespace std
{
template<>
struct hash<urde::SObjectTag>
{
    inline size_t operator()(const urde::SObjectTag& tag) const
    {return tag.id;}
};
}

#endif // __PSHAG_TYPES_HPP__