620 lines
12 KiB
C++
620 lines
12 KiB
C++
// Copyright (c) 2016-2018 Easy2D - Nomango
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#include "..\e2dmodule.h"
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#include "..\e2dobject.h"
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#include "..\e2dtool.h"
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#include "..\e2dtransition.h"
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#include <thread>
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#include <imm.h>
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#pragma comment (lib ,"imm32.lib")
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#define WINDOW_STYLE WS_OVERLAPPEDWINDOW & ~WS_MAXIMIZEBOX & ~WS_THICKFRAME
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#define REGISTER_CLASS L"Easy2DApp"
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static easy2d::Game * instance = nullptr;
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easy2d::Game * easy2d::Game::GetInstance()
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{
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return instance;
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}
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easy2d::Game::Game()
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: hwnd_(nullptr)
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, quit_(true)
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, curr_scene_(nullptr)
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, next_scene_(nullptr)
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, transition_(nullptr)
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, title_(L"Easy2D Game")
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, width_(640)
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, height_(480)
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, icon_(0)
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, debug_mode_(false)
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{
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if (instance)
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{
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throw std::runtime_error("同时只能存在一个游戏实例");
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}
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instance = this;
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::CoInitialize(nullptr);
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}
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easy2d::Game::~Game()
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{
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SafeRelease(transition_);
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SafeRelease(curr_scene_);
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SafeRelease(next_scene_);
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Image::ClearCache();
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Player::ClearCache();
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Device::Destroy();
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if (hwnd_)
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{
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::DestroyWindow(hwnd_);
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}
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instance = nullptr;
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::CoUninitialize();
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}
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void easy2d::Game::Run()
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{
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// 初始化
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Init();
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// 开始
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OnStart();
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// 刷新场景
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if (next_scene_)
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{
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next_scene_->OnEnter();
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curr_scene_ = next_scene_;
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next_scene_ = nullptr;
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}
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::ShowWindow(hwnd_, SW_SHOWNORMAL);
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::UpdateWindow(hwnd_);
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// 运行
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const int min_interval = 5;
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Time last = Time::Now();
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MSG msg = { 0 };
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while (!quit_)
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{
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auto now = Time::Now();
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auto dur = now - last;
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if (dur.Milliseconds() > min_interval)
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{
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float dt = (now - last).Seconds();
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last = now;
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Device::GetInput()->Flush();
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OnUpdate(dt);
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UpdateScene(dt);
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DrawScene();
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while (::PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE))
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{
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::TranslateMessage(&msg);
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::DispatchMessage(&msg);
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}
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}
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else
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{
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// ID2D1HwndRenderTarget 开启了垂直同步，在渲染时会等待显示器刷新，
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// 它起到了非常稳定的延时作用，所以大部分时候不需要手动挂起线程进行延时。
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// 下面的代码仅在一些情况下（例如窗口最小化时）挂起线程，防止占用过高 CPU 。
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int wait = min_interval - dur.Milliseconds();
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if (wait > 1)
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{
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std::this_thread::sleep_for(std::chrono::milliseconds(wait));
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}
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}
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}
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}
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void easy2d::Game::Quit()
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{
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quit_ = true;
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}
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void easy2d::Game::EnterScene(Scene * scene, Transition * transition)
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{
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if (scene == nullptr)
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{
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E2D_WARNING("Next scene is null pointer!");
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return;
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}
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if (curr_scene_ == scene) { return; }
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if (next_scene_)
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{
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next_scene_->Release();
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}
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next_scene_ = scene;
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next_scene_->Retain();
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if (transition)
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{
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if (transition_)
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{
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transition_->Stop();
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transition_->Release();
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}
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transition_ = transition;
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transition_->Retain();
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transition_->Init(curr_scene_, next_scene_, this);
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}
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}
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easy2d::Scene * easy2d::Game::GetCurrentScene()
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{
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return curr_scene_;
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}
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bool easy2d::Game::IsTransitioning() const
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{
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return transition_ != nullptr;
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}
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void easy2d::Game::UpdateScene(float dt)
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{
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auto update = [&](Scene * scene) -> void
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{
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if (scene)
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{
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scene->OnUpdate(dt);
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Node * root = scene->GetRoot();
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if (root)
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{
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root->UpdateChildren(dt);
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}
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}
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};
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update(curr_scene_);
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update(next_scene_);
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if (transition_)
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{
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transition_->Update();
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if (transition_->IsDone())
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{
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transition_->Release();
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transition_ = nullptr;
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}
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else
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{
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return;
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}
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}
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if (next_scene_)
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{
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if (curr_scene_)
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{
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curr_scene_->OnExit();
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curr_scene_->Release();
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}
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next_scene_->OnEnter();
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curr_scene_ = next_scene_;
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next_scene_ = nullptr;
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}
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}
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void easy2d::Game::DrawScene()
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{
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auto graphics = Device::GetGraphics();
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graphics->BeginDraw();
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if (transition_)
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{
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transition_->Draw();
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}
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else if (curr_scene_)
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{
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curr_scene_->Draw();
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}
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if (debug_mode_)
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{
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if (curr_scene_ && curr_scene_->GetRoot())
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{
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graphics->GetRenderTarget()->SetTransform(D2D1::Matrix3x2F::Identity());
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graphics->GetSolidBrush()->SetOpacity(1.f);
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curr_scene_->GetRoot()->DrawBorder();
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}
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if (next_scene_ && next_scene_->GetRoot())
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{
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graphics->GetRenderTarget()->SetTransform(D2D1::Matrix3x2F::Identity());
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graphics->GetSolidBrush()->SetOpacity(1.f);
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next_scene_->GetRoot()->DrawBorder();
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}
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graphics->DrawDebugInfo();
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}
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graphics->EndDraw();
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}
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void easy2d::Game::Init()
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{
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HINSTANCE hinstance = GetModuleHandle(nullptr);
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WNDCLASSEX wcex = { 0 };
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wcex.cbSize = sizeof(WNDCLASSEX);
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wcex.lpszClassName = REGISTER_CLASS;
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wcex.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
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wcex.lpfnWndProc = Game::WndProc;
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wcex.hIcon = nullptr;
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wcex.cbClsExtra = 0;
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wcex.cbWndExtra = sizeof(LONG_PTR);
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wcex.hInstance = hinstance;
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wcex.hbrBackground = nullptr;
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wcex.lpszMenuName = nullptr;
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wcex.hCursor = ::LoadCursor(nullptr, IDC_ARROW);
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if (icon_ != 0)
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{
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wcex.hIcon = (HICON)::LoadImage(
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hinstance,
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MAKEINTRESOURCE(icon_),
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IMAGE_ICON,
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0,
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0,
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LR_DEFAULTCOLOR | LR_CREATEDIBSECTION | LR_DEFAULTSIZE
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);
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}
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// 注册窗口类
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::RegisterClassEx(&wcex);
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// 计算窗口大小
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Rect client_rect = Locate(width_, height_);
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// 创建窗口
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hwnd_ = ::CreateWindowEx(
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NULL,
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REGISTER_CLASS,
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title_.c_str(),
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WINDOW_STYLE,
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int(client_rect.origin.x),
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int(client_rect.origin.y),
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int(client_rect.size.width),
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int(client_rect.size.height),
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nullptr,
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nullptr,
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hinstance,
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this
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);
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if (hwnd_ == nullptr)
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{
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::UnregisterClass(REGISTER_CLASS, hinstance);
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throw std::runtime_error("Create window failed");
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return;
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}
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::SetWindowLongPtrW(
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hwnd_,
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GWLP_USERDATA,
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PtrToUlong(this)
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);
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// 初始化设备
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Device::Init(hwnd_);
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// 禁用输入法
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::ImmAssociateContext(hwnd_, nullptr);
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// 若开启了调试模式，打开控制台
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HWND console = ::GetConsoleWindow();
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// 关闭控制台
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if (debug_mode_)
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{
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if (console)
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{
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::ShowWindow(console, SW_SHOWNORMAL);
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}
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else
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{
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// 显示一个新控制台
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if (::AllocConsole())
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{
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console = ::GetConsoleWindow();
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// 重定向输入输出
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FILE * stdoutStream, *stdinStream, *stderrStream;
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freopen_s(&stdoutStream, "conout$", "w+t", stdout);
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freopen_s(&stdinStream, "conin$", "r+t", stdin);
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freopen_s(&stderrStream, "conout$", "w+t", stderr);
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// 禁用控制台关闭按钮
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HMENU hmenu = ::GetSystemMenu(console, FALSE);
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::RemoveMenu(hmenu, SC_CLOSE, MF_BYCOMMAND);
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}
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}
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}
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else
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{
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if (console)
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{
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::ShowWindow(console, SW_HIDE);
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}
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}
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quit_ = false;
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}
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easy2d::Rect easy2d::Game::Locate(int width, int height)
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{
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int max_width = ::GetSystemMetrics(SM_CXSCREEN);
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int max_height = ::GetSystemMetrics(SM_CYSCREEN);
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float dpi = Graphics::GetDpi();
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RECT rect = { 0, 0, LONG(ceil(width * dpi / 96.f)), LONG(ceil(height * dpi / 96.f)) };
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// 计算合适的窗口大小
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::AdjustWindowRectEx(&rect, WINDOW_STYLE, FALSE, NULL);
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width = static_cast<int>(rect.right - rect.left);
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height = static_cast<int>(rect.bottom - rect.top);
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// 当输入的窗口大小比分辨率大时，给出警告
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E2D_WARNING_IF(max_width < width || max_height < height, "The window Is larger than screen!");
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width = std::min(width, max_width);
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height = std::min(height, max_height);
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return Rect(
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static_cast<float>((max_width - width) / 2),
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static_cast<float>((max_height - height) / 2),
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static_cast<float>(width),
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static_cast<float>(height)
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);
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}
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int easy2d::Game::GetWidth() const
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{
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return width_;
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}
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int easy2d::Game::GetHeight() const
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{
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return height_;
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}
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easy2d::Size easy2d::Game::GetSize() const
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{
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return easy2d::Size(
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static_cast<float>(width_),
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static_cast<float>(height_)
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);
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}
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HWND easy2d::Game::GetHWnd() const
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{
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return hwnd_;
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}
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const std::wstring& easy2d::Game::GetTitle() const
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{
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return title_;
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}
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void easy2d::Game::SetSize(int width, int height)
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{
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if (width_ == width && height_ == height)
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return;
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width_ = width;
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height_ = height;
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if (hwnd_)
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{
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Rect rect = Locate(width, height);
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::MoveWindow(
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hwnd_,
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int(rect.origin.x),
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int(rect.origin.y),
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int(rect.size.width),
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int(rect.size.height),
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TRUE
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);
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}
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}
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void easy2d::Game::SetTitle(const std::wstring& title)
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{
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title_ = title;
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if (hwnd_)
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{
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::SetWindowText(hwnd_, title.c_str());
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}
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}
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void easy2d::Game::SetIcon(int resource_id)
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{
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icon_ = resource_id;
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if (hwnd_)
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{
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HINSTANCE hinstance = GetModuleHandle(nullptr);
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HICON icon = (HICON)::LoadImage(
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hinstance,
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MAKEINTRESOURCE(resource_id),
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IMAGE_ICON,
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0,
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0,
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LR_DEFAULTCOLOR | LR_CREATEDIBSECTION | LR_DEFAULTSIZE
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);
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::SendMessage(hwnd_, WM_SETICON, ICON_BIG, (LPARAM)icon);
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::SendMessage(hwnd_, WM_SETICON, ICON_SMALL, (LPARAM)icon);
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}
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}
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void easy2d::Game::SetDebugMode(bool enabled)
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{
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debug_mode_ = enabled;
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}
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LRESULT easy2d::Game::WndProc(HWND hwnd, UINT msg, WPARAM w_param, LPARAM l_param)
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{
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LRESULT result = 0;
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bool was_handled = false;
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Game * game = reinterpret_cast<Game*>(
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static_cast<LONG_PTR>(::GetWindowLongPtrW(hwnd, GWLP_USERDATA))
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);
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switch (msg)
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{
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// 处理鼠标消息
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case WM_LBUTTONUP:
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case WM_LBUTTONDOWN:
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case WM_LBUTTONDBLCLK:
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case WM_MBUTTONUP:
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case WM_MBUTTONDOWN:
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case WM_MBUTTONDBLCLK:
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case WM_RBUTTONUP:
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case WM_RBUTTONDOWN:
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case WM_RBUTTONDBLCLK:
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case WM_MOUSEMOVE:
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case WM_MOUSEWHEEL:
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{
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if (game->IsTransitioning())
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break;
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auto curr_scene = game->GetCurrentScene();
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if (curr_scene)
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{
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curr_scene->Dispatch(MouseEvent(msg, w_param, l_param));
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}
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}
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result = 0;
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was_handled = true;
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break;
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// 处理按键消息
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case WM_KEYDOWN:
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case WM_KEYUP:
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{
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if (game->IsTransitioning())
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break;
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auto curr_scene = game->GetCurrentScene();
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if (curr_scene)
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{
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curr_scene->Dispatch(KeyEvent(msg, w_param, l_param));
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}
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}
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result = 0;
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was_handled = true;
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break;
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// 处理窗口大小变化消息
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case WM_SIZE:
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{
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UINT width = LOWORD(l_param);
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UINT height = HIWORD(l_param);
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if (w_param == SIZE_RESTORED)
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{
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float dpi = Graphics::GetDpi();
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game->width_ = static_cast<int>(width * 96.f / dpi);
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game->height_ = static_cast<int>(height * 96.f / dpi);
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}
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// 如果程序接收到一个 WM_SIZE 消息，这个方法将调整渲染
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// 目标的大小。它可能会调用失败，但是这里可以忽略有可能的
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// 错误，因为这个错误将在下一次调用 EndDraw 时产生
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auto render_target = Device::GetGraphics()->GetRenderTarget();
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if (render_target)
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{
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render_target->Resize(D2D1::SizeU(width, height));
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}
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}
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break;
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// 处理窗口标题变化消息
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case WM_SETTEXT:
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{
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game->title_ = (const wchar_t*)l_param;
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}
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break;
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// 处理分辨率变化消息
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case WM_DISPLAYCHANGE:
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{
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// 重绘客户区
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::InvalidateRect(hwnd, nullptr, FALSE);
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}
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result = 0;
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was_handled = true;
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break;
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// 重绘窗口
|
|
case WM_PAINT:
|
|
{
|
|
game->DrawScene();
|
|
::ValidateRect(hwnd, nullptr);
|
|
}
|
|
result = 0;
|
|
was_handled = true;
|
|
break;
|
|
|
|
// 窗口关闭消息
|
|
case WM_CLOSE:
|
|
{
|
|
if (game->OnClose())
|
|
{
|
|
game->Quit();
|
|
}
|
|
}
|
|
result = 0;
|
|
was_handled = true;
|
|
break;
|
|
|
|
// 窗口销毁消息
|
|
case WM_DESTROY:
|
|
{
|
|
::PostQuitMessage(0);
|
|
}
|
|
result = 1;
|
|
was_handled = true;
|
|
break;
|
|
|
|
}
|
|
|
|
if (!was_handled)
|
|
{
|
|
result = ::DefWindowProc(hwnd, msg, w_param, l_param);
|
|
}
|
|
return result;
|
|
}
|