84 lines
1.5 KiB
C++
84 lines
1.5 KiB
C++
#pragma once
|
|
|
|
#include "utility.h"
|
|
#include <Entities/Entity.h>
|
|
|
|
class EntityView;
|
|
|
|
class EntityViewIterator
|
|
{
|
|
friend class EntityView;
|
|
|
|
EntityViewIterator(EntityIndex);
|
|
|
|
EntityViewIterator& operator++();
|
|
|
|
EntityViewIterator operator++(int);
|
|
|
|
EntityViewIterator& operator--();
|
|
|
|
EntityViewIterator operator--(int);
|
|
|
|
Entity operator*();
|
|
|
|
Entity operator[](int);
|
|
Entity* operator->();
|
|
|
|
bool operator==(EntityViewIterator);
|
|
bool operator!=(EntityViewIterator);
|
|
|
|
private:
|
|
Entity m_currentEntity;
|
|
};
|
|
|
|
class EntityViewConstIterator
|
|
{
|
|
friend class EntityView;
|
|
|
|
EntityViewConstIterator(EntityIndex index);
|
|
|
|
EntityViewConstIterator& operator++();
|
|
|
|
EntityViewConstIterator operator++(int);
|
|
|
|
EntityViewConstIterator& operator--();
|
|
|
|
EntityViewConstIterator operator--(int);
|
|
|
|
const Entity operator*();
|
|
|
|
const Entity operator[](int index);
|
|
|
|
const Entity* operator->();
|
|
|
|
|
|
bool operator==(EntityViewConstIterator);
|
|
bool operator!=(EntityViewConstIterator);
|
|
|
|
private:
|
|
Entity m_currentEntity;
|
|
};
|
|
|
|
class EntityView
|
|
{
|
|
public:
|
|
friend class EntityManager;
|
|
EntityView() = delete;
|
|
EntityView(EntityIndex, EntityIndex);
|
|
|
|
using iterator = EntityViewIterator;
|
|
using const_iterator = EntityViewConstIterator;
|
|
|
|
iterator begin() { return iterator(m_start); }
|
|
iterator end() { return iterator(m_start + m_size); }
|
|
|
|
|
|
|
|
const_iterator cbegin() const { return const_iterator(m_start); }
|
|
const_iterator cend() const { return const_iterator(m_start + m_size); }
|
|
private:
|
|
EntityIndex m_start;
|
|
EntityIndex m_size;
|
|
};
|
|
|