Magic_Game/core/Collider/Collision.cpp

#include "..\e2dcollider.h"
#include "..\e2dnode.h"

typedef std::pair<UINT, UINT> HashPair;

static e2d::Node * s_pActiveNode = nullptr;
static e2d::Node * s_pPassiveNode = nullptr;
static std::set<HashPair> s_sCollisionList;


void e2d::Collision::addName(const String & name1, const String & name2)
{
	if (!name1.isEmpty() && !name2.isEmpty())
	{
		s_sCollisionList.insert(HashPair(name1.getHashCode(), name2.getHashCode()));
	}
}

void e2d::Collision::addName(const std::vector<std::pair<String, String> >& names)
{
	for (auto& name : names)
	{
		if (!name.first.isEmpty() && !name.second.isEmpty())
		{
			s_sCollisionList.insert(HashPair(name.first.getHashCode(), name.second.getHashCode()));
		}
	}
}

bool e2d::Collision::isCollidable(Node * node1, Node * node2)
{
	return Collision::isCollidable(node1->getName(), node2->getName());
}

bool e2d::Collision::isCollidable(const String & name1, const String & name2)
{
	UINT hashName1 = name1.getHashCode(), hashName2 = name2.getHashCode();
	HashPair pair1 = HashPair(hashName1, hashName2), pair2 = HashPair(hashName2, hashName1);
	for (auto& pair : s_sCollisionList)
	{
		if (pair == pair1 || pair == pair2)
		{
			return true;
		}
	}
	return false;
}

e2d::Node * e2d::Collision::getActiveNode()
{
	return s_pActiveNode;
}

e2d::Node * e2d::Collision::getPassiveNode()
{
	return s_pPassiveNode;
}

e2d::Node* e2d::Collision::isCausedBy(Node * node)
{
	if (s_pActiveNode == node)
		return s_pPassiveNode;
	if (s_pPassiveNode == node)
		return s_pActiveNode;
	return nullptr;
}

e2d::Node* e2d::Collision::isCausedBy(const String& name)
{
	if (s_pActiveNode->getName() == name)
		return s_pActiveNode;
	if (s_pPassiveNode->getName() == name)
		return s_pPassiveNode;
	return nullptr;
}


// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
class Listener
{
public:
	Listener(
		const e2d::Function& func,
		const e2d::String& name,
		bool paused
	)
		: name(name)
		, callback(func)
		, running(!paused)
		, stopped(false)
	{
	}

	// <20><><EFBFBD>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD>״̬
	virtual void update()
	{
		if (callback)
		{
			callback();
		}
	}

public:
	bool running;
	bool stopped;
	e2d::String name;
	e2d::Function callback;
};


// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
static std::vector<Listener*> s_vListeners;
// <20><>ײ<EFBFBD><D7B2><EFBFBD><EFBFBD>״̬
static bool s_bCollisionEnable = false;


void e2d::Collision::setEnable(bool enable)
{
	s_bCollisionEnable = enable;
}

bool e2d::Collision::isEnable()
{
	return s_bCollisionEnable;
}

void e2d::Collision::__update(Node * active, Node * passive)
{
	if (s_vListeners.empty() || Game::isPaused())
		return;

	s_pActiveNode = active;
	s_pPassiveNode = passive;

	for (size_t i = 0; i < s_vListeners.size(); ++i)
	{
		auto listener = s_vListeners[i];
		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֹͣ<CDA3>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>
		if (listener->stopped)
		{
			delete listener;
			s_vListeners.erase(s_vListeners.begin() + i);
		}
		else
		{
			// <20><><EFBFBD>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD>
			listener->update();
			++i;
		}
	}

	s_pActiveNode = nullptr;
	s_pPassiveNode = nullptr;
}

void e2d::Collision::addListener(const Function& func, const String& name, bool paused)
{
	auto listener = new (std::nothrow) Listener(func, name, paused);
	s_vListeners.push_back(listener);
}

void e2d::Collision::pause(const String& name)
{
	if (s_vListeners.empty() || name.isEmpty())
		return;

	for (auto listener : s_vListeners)
	{
		if (listener->name == name)
		{
			listener->running = false;
		}
	}
}

void e2d::Collision::resume(const String& name)
{
	if (s_vListeners.empty() || name.isEmpty())
		return;

	for (auto listener : s_vListeners)
	{
		if (listener->name == name)
		{
			listener->running = true;
		}
	}
}

void e2d::Collision::stop(const String& name)
{
	if (s_vListeners.empty() || name.isEmpty())
		return;

	for (auto listener : s_vListeners)
	{
		if (listener->name == name)
		{
			listener->stopped = true;
		}
	}
}

void e2d::Collision::pauseAll()
{
	for (auto listener : s_vListeners)
	{
		listener->running = false;
	}
}

void e2d::Collision::resumeAll()
{
	for (auto listener : s_vListeners)
	{
		listener->running = true;
	}
}

void e2d::Collision::stopAll()
{
	for (auto listener : s_vListeners)
	{
		listener->stopped = true;
	}
}

void e2d::Collision::__uninit()
{
	for (auto listener : s_vListeners)
	{
		delete listener;
	}
	s_vListeners.clear();
}