update frame ticker & fix window frozen when minimized

src/kiwano/platform/Application.cpp

@@ -48,9 +48,10 @@ Application::~Application()
 void Application::Run(RunnerPtr runner)
 {
     KGE_ASSERT(runner);
-    runner_ = runner;
     running_   = true;
     is_paused_ = false;
+    runner_    = runner;
+    timer_     = Timer::Create();
 
     // Initialize runner
     runner->InitSettings();
@@ -64,30 +65,18 @@ void Application::Run(RunnerPtr runner)
     // Everything is ready
     runner->OnReady();
 
+    // Update everything
+    this->Update(0);
+
+    // Start the loop
     while (running_)
     {
-        if (!frame_ticker_)
+        timer_->Tick();
-        {
-            frame_ticker_ = Ticker::Create(0);
-        }
 
-        if (frame_ticker_->Tick())
-        {
         // Execute main loop
-            if (!runner->MainLoop(frame_ticker_->GetDeltaTime()))
+        if (!runner->MainLoop(timer_->GetDeltaTime()))
             running_ = false;
     }
-        else
-        {
-            // Releases CPU
-            Duration total_dt = frame_ticker_->GetDeltaTime() + frame_ticker_->GetErrorTime();
-            Duration sleep_dt = frame_ticker_->GetInterval() - total_dt;
-            if (sleep_dt.Milliseconds() > 1LL)
-            {
-                sleep_dt.Sleep();
-            }
-        }
-    }
 
     this->Destroy();
 }
@@ -96,16 +85,16 @@ void Application::Pause()
 {
     is_paused_ = true;
 
-    if (frame_ticker_)
+    if (timer_)
-        frame_ticker_->Pause();
+        timer_->Pause();
 }
 
 void Application::Resume()
 {
     is_paused_ = false;
 
-    if (frame_ticker_)
+    if (timer_)
-        frame_ticker_->Resume();
+        timer_->Resume();
 }
 
 void Application::Quit()
@@ -113,6 +102,12 @@ void Application::Quit()
     running_ = false;
 }
 
+void Application::UpdateFrame(Duration dt)
+{
+    this->Render();
+    this->Update(dt);
+}
+
 void Application::Destroy()
 {
     if (runner_)

src/kiwano/platform/Application.h

@@ -27,7 +27,7 @@
 #include <kiwano/event/Event.h>
 #include <kiwano/platform/Runner.h>
 #include <kiwano/platform/Window.h>
-#include <kiwano/utils/Ticker.h>
+#include <kiwano/utils/Timer.h>
 
 namespace kiwano
 {
@@ -103,18 +103,6 @@ public:
      */
     WindowPtr GetWindow() const;
 
-    /**
-     * \~chinese
-     * @brief 获取帧报时器
-     */
-    TickerPtr GetFrameTicker() const;
-
-    /**
-     * \~chinese
-     * @brief 设置帧报时器
-     */
-    void SetFrameTicker(TickerPtr ticker);
-
     /**
      * \~chinese
      * @brief 设置时间缩放因子
@@ -150,16 +138,10 @@ public:
 
     /**
      * \~chinese
-     * @brief 更新所有模块
+     * @brief 更新一帧
      * @param dt 时间间隔
      */
-    void Update(Duration dt);
+    void UpdateFrame(Duration dt);
-
-    /**
-     * \~chinese
-     * @brief 创建渲染上下文并渲染画面
-     */
-    void Render();
 
     /**
      * \~chinese
@@ -167,12 +149,26 @@ public:
      */
     void Destroy();
 
+private:
+    /**
+     * \~chinese
+     * @brief 更新所有模块
+     * @param dt 时间间隔
+     */
+    void Update(Duration dt);
+
+    /**
+     * \~chinese
+     * @brief 渲染画面
+     */
+    void Render();
+
 private:
     bool                    running_;
     bool                    is_paused_;
     float                   time_scale_;
     RunnerPtr               runner_;
-    TickerPtr               frame_ticker_;
+    TimerPtr                timer_;
     List<Module*>           modules_;
     std::mutex              perform_mutex_;
     Queue<Function<void()>> functions_to_perform_;
@@ -185,18 +181,9 @@ inline RunnerPtr Application::GetRunner() const
 
 inline WindowPtr Application::GetWindow() const
 {
-    KGE_ASSERT(runner_);
+    if (runner_)
         return runner_->GetWindow();
-}
+    return nullptr;
-
-inline TickerPtr Application::GetFrameTicker() const
-{
-    return frame_ticker_;
-}
-
-inline void Application::SetFrameTicker(TickerPtr ticker)
-{
-    frame_ticker_ = ticker;
 }
 
 inline bool Application::IsPaused() const

src/kiwano/platform/Runner.cpp

@@ -101,6 +101,9 @@ void Runner::InitSettings()
         Director::GetInstance().ShowDebugInfo(true);
         Renderer::GetInstance().GetContext().SetCollectingStatus(true);
     }
+
+    // Create frame ticker
+    frame_ticker_ = Ticker::Create(settings_.frame_interval, -1);
 }
 
 bool Runner::MainLoop(Duration dt)
@@ -118,9 +121,6 @@ bool Runner::MainLoop(Duration dt)
 
     Application& app = Application::GetInstance();
 
-    // Update modules before poll events
-    app.Update(dt);
-
     // Poll events
     main_window_->PumpEvents();
     while (EventPtr evt = main_window_->PollEvent())
@@ -128,12 +128,27 @@ bool Runner::MainLoop(Duration dt)
         app.DispatchEvent(evt.Get());
     }
 
-    app.Render();
+    // Update frame ticker
-
+    if (frame_ticker_)
-    if (app.IsPaused())
     {
-        // Slow down when the application is paused
+        if (frame_ticker_->Tick(dt))
-        Duration(5).Sleep();
+        {
+            app.UpdateFrame(frame_ticker_->GetDeltaTime());
+        }
+        else
+        {
+            // Releases CPU
+            Duration total_dt = frame_ticker_->GetDeltaTime() + frame_ticker_->GetErrorTime();
+            Duration sleep_dt = frame_ticker_->GetInterval() - total_dt;
+            if (sleep_dt.Milliseconds() > 1LL)
+            {
+                sleep_dt.Sleep();
+            }
+        }
+    }
+    else
+    {
+        app.UpdateFrame(dt);
     }
     return true;
 }

src/kiwano/platform/Runner.h

@@ -24,6 +24,8 @@
 #include <kiwano/platform/Window.h>
 #include <kiwano/render/Color.h>
 #include <kiwano/render/Texture.h>
+#include <kiwano/utils/Ticker.h>
+
 
 namespace kiwano
 {
@@ -44,6 +46,7 @@ struct Settings
     uint32_t icon;            ///< 窗口图标
     bool     resizable;       ///< 窗口大小可调整
     Color    bg_color;        ///< 窗口背景色
+    Duration frame_interval;  ///< 帧间隔
     bool     vsync_enabled;   ///< 垂直同步
     bool     debug_mode;      ///< 调试模式
 
@@ -54,7 +57,8 @@ struct Settings
         , icon()
         , resizable(false)
         , bg_color(Color::Black)
-        , vsync_enabled(true)
+        , frame_interval(16)
+        , vsync_enabled(false)
         , debug_mode(false)
     {
     }
@@ -118,6 +122,14 @@ public:
     /// @brief 获取设置
     Settings GetSettings() const;
 
+    /// \~chinese
+    /// @brief 获取帧报时器
+    TickerPtr GetFrameTicker() const;
+
+    /// \~chinese
+    /// @brief 设置帧报时器
+    void SetFrameTicker(TickerPtr ticker);
+
 protected:
     /// \~chinese
     /// @brief 修改设置
@@ -131,6 +143,7 @@ private:
 private:
     Settings  settings_;
     WindowPtr main_window_;
+    TickerPtr frame_ticker_;
 };
 
 inline void Runner::OnReady() {}
@@ -162,4 +175,14 @@ inline void Runner::SetSettings(Settings settings)
     settings_ = settings;
 }
 
+inline TickerPtr Runner::GetFrameTicker() const
+{
+    return frame_ticker_;
+}
+
+inline void Runner::SetFrameTicker(TickerPtr ticker)
+{
+    frame_ticker_ = ticker;
+}
+
 }  // namespace kiwano