added debug overlay class for showing fps and other infos

src/debugoverlay.cpp

@@ -0,0 +1,50 @@
+#include "debugoverlay.h"
+
+#include "imgui/imgui.h"
+#include "engine.h"
+
+DebugOverlay::DebugOverlay():
+    m_enabled(false)
+{
+    setID("overlay");
+}
+
+void DebugOverlay::update(){
+    gui();
+    SceneNode::update();
+}
+
+void DebugOverlay::gui()
+{
+    if(m_enabled)
+    {
+        ImGuiIO& io = ImGui::GetIO();
+    //    io.DeltaTime = float(getEngine().getDeltaTime()) / 1000.;
+ //       ImGui::NewFrame();
+
+        const float DISTANCE = 10.0f;
+        ImVec2 window_pos = ImVec2(ImGui::GetIO().DisplaySize.x - DISTANCE,DISTANCE);
+        ImVec2 window_pos_pivot = ImVec2(1.0f, 0.0f);
+
+        ImGui::SetNextWindowPos(window_pos, ImGuiCond_Always, window_pos_pivot);
+        ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(0.0f, 0.0f, 0.0f, 0.3f)); // Transparent background
+
+        bool overlayEnabled = true;
+        ImGui::Begin("Debug Overlay",
+                     &overlayEnabled,
+                     ImGuiWindowFlags_NoTitleBar|
+                     ImGuiWindowFlags_NoResize|
+                     ImGuiWindowFlags_AlwaysAutoResize|
+                     ImGuiWindowFlags_NoMove|
+                     ImGuiWindowFlags_NoSavedSettings);
+        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
+        ImGui::End();
+        ImGui::PopStyleColor();
+//        ImGui::EndFrame();
+    }
+}
+
+void DebugOverlay::toggle()
+{
+    m_enabled = !m_enabled;
+}

src/debugoverlay.h

@@ -0,0 +1,18 @@
+#ifndef DEBUGOVERLAY_H
+#define DEBUGOVERLAY_H
+
+#include "scene/scenenode.h"
+
+class DebugOverlay : public SceneNode
+{
+    bool m_enabled;
+
+public:
+    DebugOverlay();
+
+    void update();
+    void gui();
+    void toggle();
+};
+
+#endif // DEBUGOVERLAY_H

src/engine.cpp

@@ -15,6 +15,7 @@
 #include "tools/loader.h"
 #include "editor.h"
 #include "keymapper.h"
+#include "debugoverlay.h"
 #include "tools/loadingthread.h"
 
 Engine::Engine() :
@@ -70,6 +71,7 @@ void Engine::createWindow(std::string title,
     m_sparrowshell = new SparrowShell(m_window);
     m_editor = new Editor();
     m_keymapper = new KeyMapper();
+    m_overlay = new DebugOverlay();
     m_loadingThread = LoadingThread::init();
 }
 
@@ -103,7 +105,8 @@ void Engine::update()
         if(settingsGuiOpen)
         {
             ImGui::Begin("Window Settings", &settingsGuiOpen);
-            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
+            //moved to overlay
+            //ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
             bool physicsDebugEnabled = (m_physicsDebugNode != nullptr);
             if(ImGui::Checkbox("Toggle physics debug", &physicsDebugEnabled))
             {
@@ -135,15 +138,6 @@ static void ShowExampleAppFixedOverlay(bool* p_open)
         ImGui::Text("Simple overlay\nin the corner of the screen.\n(right-click to change position)");
         ImGui::Separator();
         ImGui::Text("Mouse Position: (%.1f,%.1f)", ImGui::GetIO().MousePos.x, ImGui::GetIO().MousePos.y);
-        if (ImGui::BeginPopupContextWindow())
-        {
-            if (ImGui::MenuItem("Top-left", NULL, corner == 0)) corner = 0;
-            if (ImGui::MenuItem("Top-right", NULL, corner == 1)) corner = 1;
-            if (ImGui::MenuItem("Bottom-left", NULL, corner == 2)) corner = 2;
-            if (ImGui::MenuItem("Bottom-right", NULL, corner == 3)) corner = 3;
-            if (p_open && ImGui::MenuItem("Close")) *p_open = false;
-            ImGui::EndPopup();
-        }
         ImGui::End();
     }
     ImGui::PopStyleColor();
@@ -223,6 +217,7 @@ void Engine::setScene(std::string scene)
     new_scene->getRootObject()->addChild(m_sparrowshell);
     new_scene->getRootObject()->addChild(m_editor);
     new_scene->getRootObject()->addChild(m_keymapper);
+    new_scene->getRootObject()->addChild(m_overlay);
 }
 
 void Engine::enablePhysicsDebug()

src/engine.h

@@ -10,6 +10,7 @@ class SparrowShell;
 class PhysicsDebugNode;
 class Editor;
 class KeyMapper;
+class DebugOverlay;
 class LoadingThread;
 
 namespace sf
@@ -56,6 +57,7 @@ public:
     PhysicsDebugNode* getPhysicsDebug() const {return m_physicsDebugNode;}
     Editor* getEditor() const {return m_editor;}
     KeyMapper* getKeyMapper() const{return m_keymapper;}
+    DebugOverlay* getOverlay() const{return m_overlay;}
     LoadingThread* getLoadingThread() const {return m_loadingThread;}
     SceneTree* getScene() const;
 
@@ -83,6 +85,7 @@ private:
     PhysicsDebugNode *m_physicsDebugNode;
     SparrowRenderer* m_renderer;
     Editor* m_editor;
+    DebugOverlay* m_overlay;
     KeyMapper* m_keymapper;
     LoadingThread* m_loadingThread;
 

src/sparrowshell/scriptnode.cpp

@@ -10,6 +10,7 @@
 #include "tools/utils.h"
 #include "editor.h"
 #include "keymapper.h"
+#include "debugoverlay.h"
 
 #define LUA_DEFINE(var) S[#var]=var
 #define LUA_SET_FUN(var) m_script.set_function(#var,&ScriptNode::var,this);this->functions_name.push_back(#var);
@@ -30,6 +31,7 @@ ScriptNode::ScriptNode()
     LUA_SET_FUN(resourcePackEditor);
     LUA_SET_FUN(editor);
     LUA_SET_FUN(keymapper);
+    LUA_SET_FUN(overlay);
 
     m_script.new_usertype<Engine>("Engine",
                                   "time",&Engine::getTime,
@@ -121,3 +123,7 @@ void ScriptNode::editor(){
 void ScriptNode::keymapper(){
     this->getEngine().getKeyMapper()->toggle();
 }
+
+void ScriptNode::overlay(){
+    this->getEngine().getOverlay()->toggle();
+}

src/sparrowshell/scriptnode.h

@@ -29,6 +29,7 @@ public:
     void resourcePackEditor();
     void editor();
     void keymapper();
+    void overlay();
 };
 
 #endif // SCRIPTNODE_H