Magic_Game/core/Base/Game.cpp

#include "..\e2dbase.h"
#include "..\e2dnode.h"
#include "..\e2dtransition.h"
#include "..\e2dmanager.h"
#include "..\e2dtool.h"
#include <thread>


e2d::Game * e2d::Game::instance_ = nullptr;

e2d::Game * e2d::Game::GetInstance()
{
	if (!instance_)
		instance_ = new (std::nothrow) Game;
	return instance_;
}

void e2d::Game::DestroyInstance()
{
	if (instance_)
	{
		delete instance_;
		instance_ = nullptr;
	}
}

e2d::Game::Game()
	: quit_(true)
	, paused_(false)
	, curr_scene_(nullptr)
	, next_scene_(nullptr)
	, transition_(nullptr)
{
	::CoInitialize(nullptr);
}

e2d::Game::~Game()
{
	::CoUninitialize();
}

void e2d::Game::Start()
{
	quit_ = false;

	auto window = Window::GetInstance();
	auto input = Input::GetInstance();
	auto renderer = Renderer::GetInstance();
	auto timer = Timer::GetInstance();

	const int minInterval = 5;
	Time last = Time::Now();
	HWND hWnd = window->GetHWnd();
	
	::ShowWindow(hWnd, SW_SHOWNORMAL);
	::UpdateWindow(hWnd);
	window->Poll();
	UpdateScene();
	
	while (!quit_)
	{
		auto now = Time::Now();
		auto dur = now - last;

		if (dur.Milliseconds() > minInterval)
		{
			last = now;
			input->Update();

			if (!paused_)
			{
				timer->Update();
				UpdateScene();
			}
			
			DrawScene();
			window->Poll();
			GC::GetInstance()->Flush();
		}
		else
		{
			// ID2D1HwndRenderTarget <20><><EFBFBD><EFBFBD><EFBFBD>˴<EFBFBD>ֱͬ<D6B1><CDAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ⱦʱ<C8BE><CAB1><EFBFBD>ȴ<EFBFBD><C8B4><EFBFBD>ʾ<EFBFBD><CABE>ˢ<EFBFBD>£<EFBFBD>
			// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˷dz<CBB7><C7B3>ȶ<EFBFBD><C8B6><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD>ã<EFBFBD><C3A3><EFBFBD><EFBFBD>Դ󲿷<D4B4>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>ֶ<EFBFBD><D6B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߳̽<DFB3><CCBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>
			// <20><><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<D2BB><D0A9><EFBFBD><EFBFBD><EFBFBD>£<EFBFBD><C2A3><EFBFBD><EFBFBD>細<EFBFBD><E7B4B0><EFBFBD><EFBFBD>С<EFBFBD><D0A1>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̣߳<DFB3><CCA3><EFBFBD>ֹռ<D6B9>ù<EFBFBD><C3B9><EFBFBD> CPU <20><>
			int wait = minInterval - dur.Milliseconds();
			if (wait > 1)
			{
				std::this_thread::sleep_for(std::chrono::milliseconds(wait));
			}
		}
	}
}

void e2d::Game::Pause()
{
	paused_ = true;
}

void e2d::Game::Resume()
{
	if (paused_ && !quit_)
	{
		Timer::GetInstance()->UpdateTime();
		if (curr_scene_)
			curr_scene_->UpdateActionsTime();
	}
	paused_ = false;
}

bool e2d::Game::IsPaused()
{
	return paused_;
}

void e2d::Game::Quit()
{
	quit_ = true;
}

void e2d::Game::EnterScene(Scene * scene)
{
	if (!scene)
		return;

	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
	if (next_scene_) next_scene_->Release();
	next_scene_ = scene;
	next_scene_->Retain();
}

void e2d::Game::EnterScene(Transition * transition)
{
	if (!transition)
		return;

	EnterScene(transition->in_scene_);

	if (transition_)
	{
		transition_->Stop();
		transition_->Release();
	}
	transition_ = transition;
	transition_->Retain();

	// <20><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>л<EFBFBD><D0BB><EFBFBD><EFBFBD><EFBFBD>
	if (!transition_->Init(this, curr_scene_))
	{
		WARN("Transition initialize failed!");
		transition_->Release();
		transition_ = nullptr;
	}
}

e2d::Scene * e2d::Game::GetCurrentScene()
{
	return curr_scene_;
}

bool e2d::Game::IsTransitioning() const
{
	return transition_ != nullptr;
}

void e2d::Game::UpdateScene()
{
	if (transition_)
	{
		transition_->Update();

		if (transition_->IsDone())
		{
			transition_->Release();
			transition_ = nullptr;
		}
		else
		{
			return;
		}
	}

	if (next_scene_)
	{
		if (curr_scene_)
		{
			curr_scene_->OnExit();
			curr_scene_->Release();
		}

		next_scene_->OnEnter();

		curr_scene_ = next_scene_;
		next_scene_ = nullptr;
	}
}

void e2d::Game::DrawScene()
{
	Renderer::GetInstance()->BeginDraw();
	{
		if (transition_)
		{
			transition_->Draw();
		}
		else if (curr_scene_)
		{
			curr_scene_->Visit();
		}
	}
	Renderer::GetInstance()->EndDraw();
}