FactoryCraft-Client/FactoryCraft/StaticRegistry.h

#pragma once

#define REGISTRABLE( c )          \
public:                           \
    static const c *INSTANCE;     \
    static const int ID;          \
                                  \
private:

#define REGISTER(c, typ)


template<typename T>
class StaticRegistry
{
private:
	T** registry;
	int count;

public:
	StaticRegistry()
	{
		count = 1;
		registry = new T * [count];
		memset(registry, 0, sizeof(T*) * count);
	}

	~StaticRegistry()
	{
		for (int index = 0; index < count; index++)
		{
			if (registry[index])
			{
				registry[index]->release();
				registry[index] = 0;
			}
		}
		delete[]registry;
	}

	void registerT(T* type, int id)
	{
		if (id >= count)
		{
			T** temp = new T * [id + 1];
			memcpy(temp, registry, sizeof(T*) * count);
			memset(temp + count, 0, sizeof(T*) * (id + 1 - count));
			delete[]registry;
			registry = temp;
			count = id + 1;
		}
		registry[id] = type;
	}

	T* zElement(int id)
	{
		if (id < 0 || id >= count)
			return 0;
		return registry[id];
	}

	int getCount() const
	{
		return count;
	}

	friend T;
};