559 lines
11 KiB
C++
559 lines
11 KiB
C++
// Copyright (c) 2016-2018 Kiwano - 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 "Application.h"
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#include "modules.h"
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#include "../base/logs.h"
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#include "../base/input.h"
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#include "../renderer/render.h"
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#include "../2d/Scene.h"
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#include "../2d/DebugNode.h"
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#include "../2d/Transition.h"
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#include <windowsx.h> // GET_X_LPARAM, GET_Y_LPARAM
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#include <imm.h> // ImmAssociateContext
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#include <mutex> // std::mutex
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#pragma comment(lib, "imm32.lib")
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namespace kiwano
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{
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using FunctionToPerform = Closure<void()>;
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namespace
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{
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std::mutex perform_mutex_;
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Queue<FunctionToPerform> functions_to_perform_;
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}
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}
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namespace kiwano
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{
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Application::Application()
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: end_(true)
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, inited_(false)
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, time_scale_(1.f)
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{
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ThrowIfFailed(
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::CoInitialize(nullptr)
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);
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Use(Renderer::Instance());
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Use(Input::Instance());
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}
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Application::~Application()
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{
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Destroy();
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::CoUninitialize();
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}
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void Application::Init(const Options& options)
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{
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ThrowIfFailed(
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Window::Instance()->Create(
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options.title,
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options.width,
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options.height,
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options.icon,
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options.fullscreen,
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Application::WndProc
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)
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);
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Renderer::Instance()->SetClearColor(options.clear_color);
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Renderer::Instance()->SetVSyncEnabled(options.vsync);
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// Setup all components
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for (Component* c : components_)
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{
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c->SetupComponent(this);
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}
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// Everything is ready
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OnStart();
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HWND hwnd = Window::Instance()->GetHandle();
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// disable imm
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::ImmAssociateContext(hwnd, nullptr);
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// use Application instance in message loop
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::SetWindowLongPtr(hwnd, GWLP_USERDATA, LONG_PTR(this));
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inited_ = true;
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}
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void Application::Run()
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{
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HWND hwnd = Window::Instance()->GetHandle();
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if (!hwnd)
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throw std::exception("Calling Application::Run before Application::Init");
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if (hwnd)
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{
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end_ = false;
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Window::Instance()->Prepare();
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MSG msg = {};
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while (::GetMessageW(&msg, nullptr, 0, 0) && !end_)
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{
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::TranslateMessage(&msg);
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::DispatchMessageW(&msg);
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}
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}
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}
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void Application::Quit()
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{
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end_ = true;
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}
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void Application::Destroy()
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{
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transition_.Reset();
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next_scene_.Reset();
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curr_scene_.Reset();
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debug_node_.Reset();
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if (inited_)
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{
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inited_ = false;
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for (auto iter = components_.rbegin(); iter != components_.rend(); ++iter)
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{
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(*iter)->DestroyComponent();
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}
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components_.clear();
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}
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// Destroy all instances
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Input::Destroy();
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Renderer::Destroy();
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Window::Destroy();
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// DO NOT destroy Logger instance manually
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// Logger::Destroy();
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}
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void Application::Use(Component* component)
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{
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if (component)
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{
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#if defined(KGE_DEBUG)
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if (components_.contains(component))
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{
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KGE_ASSERT(false && "Component already exists!");
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}
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#endif
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components_.push_back(component);
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}
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}
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void Application::Remove(Component* component)
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{
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if (component)
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{
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for (auto iter = components_.begin(); iter != components_.end(); ++iter)
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{
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if ((*iter) == component)
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{
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(*iter)->DestroyComponent();
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components_.erase(iter);
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break;
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}
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}
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}
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}
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void Application::EnterScene(ScenePtr scene)
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{
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KGE_ASSERT(scene && "Application::EnterScene failed, NULL pointer exception");
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if (curr_scene_ == scene || next_scene_ == scene)
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return;
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next_scene_ = scene;
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}
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void Application::EnterScene(ScenePtr scene, TransitionPtr transition)
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{
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EnterScene(scene);
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if (transition && next_scene_)
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{
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if (transition_)
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{
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transition_->Stop();
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}
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transition_ = transition;
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transition_->Init(curr_scene_, next_scene_);
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}
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}
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ScenePtr Application::GetCurrentScene()
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{
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return curr_scene_;
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}
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void Application::SetTimeScale(float scale_factor)
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{
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time_scale_ = scale_factor;
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}
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void Application::ShowDebugInfo(bool show)
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{
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if (show)
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{
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debug_node_ = new DebugNode;
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Renderer::Instance()->SetCollectingStatus(true);
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}
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else
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{
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debug_node_.Reset();
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Renderer::Instance()->SetCollectingStatus(false);
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}
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}
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void Application::Dispatch(Event& evt)
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{
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if (debug_node_)
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debug_node_->Dispatch(evt);
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if (curr_scene_)
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curr_scene_->Dispatch(evt);
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}
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void Application::Update()
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{
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static auto last = Time::Now();
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const auto now = Time::Now();
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const auto dt = (now - last) * time_scale_;
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last = now;
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// Before update
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for (Component* c : components_)
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{
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c->BeforeUpdate(dt.Seconds());
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}
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// Updating
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if (transition_)
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{
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transition_->Update(dt);
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if (transition_->IsDone())
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transition_ = nullptr;
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}
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if (next_scene_ && !transition_)
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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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}
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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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// perform functions
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{
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if (!functions_to_perform_.empty())
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{
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perform_mutex_.lock();
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auto functions = std::move(functions_to_perform_);
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perform_mutex_.unlock();
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while (!functions.empty())
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{
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auto& func = functions.front();
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if (func)
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{
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func();
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}
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functions.pop();
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}
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}
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}
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OnUpdate(dt);
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if (curr_scene_)
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curr_scene_->Update(dt);
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if (next_scene_)
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next_scene_->Update(dt);
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if (debug_node_)
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debug_node_->Update(dt);
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// After update
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for (auto rit = components_.rbegin(); rit != components_.rend(); ++rit)
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{
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(*rit)->AfterUpdate();
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}
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}
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void Application::Render()
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{
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// Before render
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for (Component* c : components_)
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{
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c->BeforeRender();
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}
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// Rendering
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if (transition_)
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{
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transition_->Render();
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}
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else if (curr_scene_)
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{
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curr_scene_->Render();
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}
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OnRender();
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if (debug_node_)
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debug_node_->Render();
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// After render
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for (auto rit = components_.rbegin(); rit != components_.rend(); ++rit)
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{
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(*rit)->AfterRender();
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}
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}
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void Application::PreformInMainThread(Closure<void()> function)
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{
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std::lock_guard<std::mutex> lock(perform_mutex_);
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functions_to_perform_.push(function);
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}
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LRESULT CALLBACK Application::WndProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
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{
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Application * app = reinterpret_cast<Application*>(static_cast<LONG_PTR>(::GetWindowLongPtrW(hwnd, GWLP_USERDATA)));
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if (!app)
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return ::DefWindowProcW(hwnd, msg, wparam, lparam);
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// Handle Message
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for (Component* c : app->components_)
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{
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c->HandleMessage(hwnd, msg, wparam, lparam);
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}
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switch (msg)
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{
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case WM_PAINT:
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{
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app->Update();
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app->Render();
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::InvalidateRect(hwnd, NULL, FALSE);
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return 0;
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}
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break;
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case WM_KEYDOWN:
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case WM_SYSKEYDOWN:
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case WM_KEYUP:
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case WM_SYSKEYUP:
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{
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if (!app->transition_ && app->curr_scene_)
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{
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bool down = msg == WM_KEYDOWN || msg == WM_SYSKEYDOWN;
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Event evt(down ? Event::KeyDown : Event::KeyUp);
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evt.key.code = static_cast<int>(wparam);
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evt.key.count = static_cast<int>(lparam & 0xFF);
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app->Dispatch(evt);
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}
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}
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break;
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case WM_CHAR:
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{
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if (!app->transition_ && app->curr_scene_)
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{
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Event evt(Event::Char);
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evt.key.c = static_cast<char>(wparam);
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evt.key.count = static_cast<int>(lparam & 0xFF);
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app->Dispatch(evt);
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}
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}
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break;
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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 (!app->transition_ && app->curr_scene_)
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{
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Event evt;
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evt.mouse.x = static_cast<float>(GET_X_LPARAM(lparam));
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evt.mouse.y = static_cast<float>(GET_Y_LPARAM(lparam));
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evt.mouse.left_btn_down = !!(wparam & MK_LBUTTON);
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evt.mouse.left_btn_down = !!(wparam & MK_RBUTTON);
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if (msg == WM_MOUSEMOVE) { evt.type = Event::MouseMove; }
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else if (msg == WM_LBUTTONDOWN || msg == WM_RBUTTONDOWN || msg == WM_MBUTTONDOWN) { evt.type = Event::MouseBtnDown; }
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else if (msg == WM_LBUTTONUP || msg == WM_RBUTTONUP || msg == WM_MBUTTONUP) { evt.type = Event::MouseBtnUp; }
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else if (msg == WM_MOUSEWHEEL) { evt.type = Event::MouseWheel; evt.mouse.wheel = GET_WHEEL_DELTA_WPARAM(wparam) / (float)WHEEL_DELTA; }
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if (msg == WM_LBUTTONDOWN || msg == WM_LBUTTONUP) { evt.mouse.button = MouseButton::Left; }
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else if (msg == WM_RBUTTONDOWN || msg == WM_RBUTTONUP) { evt.mouse.button = MouseButton::Right; }
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else if (msg == WM_MBUTTONDOWN || msg == WM_MBUTTONUP) { evt.mouse.button = MouseButton::Middle; }
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app->Dispatch(evt);
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}
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}
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break;
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case WM_SIZE:
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{
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if (SIZE_MAXHIDE == wparam || SIZE_MINIMIZED == wparam)
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{
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KGE_LOG(L"Window minimized");
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}
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else
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{
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KGE_LOG(L"Window resized");
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if (app->curr_scene_)
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{
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Event evt(Event::WindowResized);
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evt.win.width = LOWORD(lparam);
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evt.win.height = HIWORD(lparam);
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app->Dispatch(evt);
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}
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Window::Instance()->UpdateWindowRect();
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}
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}
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break;
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case WM_MOVE:
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{
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if (app->curr_scene_)
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{
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int x = (int)(short)LOWORD(lparam);
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int y = (int)(short)HIWORD(lparam);
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Event evt(Event::WindowMoved);
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evt.win.x = x;
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evt.win.y = y;
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app->Dispatch(evt);
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}
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}
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break;
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case WM_ACTIVATE:
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{
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bool active = (LOWORD(wparam) != WA_INACTIVE);
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Window::Instance()->SetActive(active);
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if (app->curr_scene_)
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{
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Event evt(Event::WindowFocusChanged);
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evt.win.focus = active;
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app->Dispatch(evt);
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}
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}
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break;
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case WM_SETTEXT:
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{
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KGE_LOG(L"Window title changed");
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if (app->curr_scene_)
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{
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Event evt(Event::WindowTitleChanged);
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evt.win.title = reinterpret_cast<const wchar_t*>(lparam);
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app->Dispatch(evt);
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}
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}
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break;
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case WM_SETICON:
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{
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KGE_LOG(L"Window icon changed");
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}
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break;
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case WM_DISPLAYCHANGE:
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{
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KGE_LOG(L"The display resolution has changed");
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::InvalidateRect(hwnd, nullptr, FALSE);
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}
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break;
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case WM_CLOSE:
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{
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KGE_LOG(L"Window is closing");
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if (!app->OnClosing())
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{
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return 0;
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}
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}
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break;
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case WM_DESTROY:
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{
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KGE_LOG(L"Window was destroyed");
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if (app->curr_scene_)
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{
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Event evt(Event::WindowClosed);
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app->Dispatch(evt);
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}
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app->OnDestroy();
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::PostQuitMessage(0);
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return 0;
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}
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break;
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}
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return ::DefWindowProcW(hwnd, msg, wparam, lparam);
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}
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}
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