Magic_Game/Easy2D/Scene.cpp

#include "easy2d.h"
#include <assert.h>

Scene::Scene()
{
}

Scene::~Scene()
{
	clearAllChildren();
}

void Scene::_exec()
{
	// active <20><>־<EFBFBD><D6BE><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD>ȡ<EFBFBD>ý<EFBFBD><C3BD><EFBFBD>
	bool active = true;
	// <20><><EFBFBD><EFBFBD>ִ<EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƵĽڵ㣨<DAB5><E3A3A8>λ<EFBFBD>ڻ<EFBFBD><DABB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϸ<EFBFBD><CFB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱ<EFBFBD><C8B1><EFBFBD><EFBFBD><EFBFBD>
	for (int i = int(m_vChildren.size()) - 1; i >= 0; i--)
	{
		assert(m_vChildren[i]);
		if (m_vChildren[i]->_exec(active))	// ִ<>нڵ<D0BD><DAB5><EFBFBD><EFBFBD><EFBFBD>
		{
			active = false;					// <20><><EFBFBD>ӽڵ<D3BD>ȡ<EFBFBD>ý<EFBFBD><C3BD>㣬<EFBFBD><E3A3AC><EFBFBD><EFBFBD>־<EFBFBD><D6BE> false
		}
	}
}

void Scene::_onDraw()
{
	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>нڵ<D0BD>
	for (auto child : m_vChildren)
	{
		assert(child);
		child->_onDraw();
	}
}

void Scene::onEnter()
{
}

void Scene::onExit()
{
}

void Scene::add(Node * child, int zOrder)
{
	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӵĽڵ<C4BD><DAB5>ǿ<EFBFBD>
	assert(child);
	// <20><><EFBFBD>ýڵ<C3BD><DAB5>ĸ<EFBFBD><C4B8><EFBFBD><EFBFBD><EFBFBD>
	child->setParentScene(this);
	// <20><><EFBFBD><EFBFBD> z <20><>˳<EFBFBD><CBB3>
	child->setZOrder(zOrder);
	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ü<EFBFBD><C3BC><EFBFBD><EFBFBD><EFBFBD>һ
	child->retain();

	// <20><> z <20><>˳<EFBFBD><CBB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD>
	size_t size = m_vChildren.size();
	for (unsigned i = 0; i <= size; i++)
	{
		if (i == size)
		{
			m_vChildren.push_back(child);
			break;
		}
		else
		{
			auto temp = m_vChildren.at(i);
			if (temp->getZOrder() > zOrder)
			{
				m_vChildren.insert(m_vChildren.begin() + i, child);
				break;
			}
		}
	}
}

bool Scene::del(Node * child)
{
	// <20><><EFBFBD>Խڵ<D4BD><DAB5>ǿ<EFBFBD>
	assert(child);

	// Ѱ<><D1B0><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD>ͬ<EFBFBD>ڵ<EFBFBD>
	std::vector<Node*>::iterator iter;
	for (iter = m_vChildren.begin(); iter != m_vChildren.end(); iter++)
	{
		// <20>ҵ<EFBFBD><D2B5><EFBFBD>ͬ<EFBFBD>ڵ<EFBFBD>
		if (*iter == child)
		{
			// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ü<EFBFBD><C3BC><EFBFBD><EFBFBD><EFBFBD>һ
			(*iter)->release();
			// ȥ<><C8A5><EFBFBD>ýڵ<C3BD>
			m_vChildren.erase(iter);
			return true;
		}
	}
	// δ<>ҵ<EFBFBD><D2B5>ýڵ㷵<DAB5><E3B7B5> false
	return false;
}

void Scene::clearAllChildren()
{
	// <20><><EFBFBD>нڵ<D0BD><DAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ü<EFBFBD><C3BC><EFBFBD><EFBFBD><EFBFBD>һ
	for (auto child : m_vChildren)
	{
		child->release();
	}
	// <20><><EFBFBD>մ<EFBFBD><D5B4><EFBFBD><EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	m_vChildren.clear();
}