Move logic/data to state

Also set "H" key to toggle help window instead of only showing when "H"
is pressed down.

src/main.cpp

@@ -12,42 +12,12 @@ int main(int argc, char **argv) {
     // init
     Tri::State state{};
 
-    sf::RenderWindow window(
-        sf::VideoMode(state.width, state.height),
-        "Triangles",
-        sf::Style::Titlebar | sf::Style::Close);
-    ImGui::SFML::Init(window);
-    window.setFramerateLimit(60);
-
     // main loop
-    sf::Event event;
+    while(state.window.isOpen()) {
-    while(window.isOpen()) {
+        state.handle_events();
-        // events
-        window.pollEvent(event);
-        ImGui::SFML::ProcessEvent(event);
-        if(event.type == sf::Event::Closed) {
-            window.close();
-        }
-        state.handle_event(&event);
-
-        // update
-        ImGui::SFML::Update(window, state.dt);
-
         state.update();
-
-        ImGui::EndFrame();
-        // update end
-
-        // draw
-        window.clear();
-        ImGui::SFML::Render(window);
         state.draw();
-        window.display();
     }
 
-    // cleanup
-    window.close();
-    ImGui::SFML::Shutdown();
-
     return 0;
 }

src/state.cpp

@@ -1,27 +1,38 @@
 #include "state.hpp"
 
+#include <imgui-SFML.h>
+
 #include "imgui_helper.hpp"
 
 Tri::State::State() :
 width(800),
 height(600),
 dt(sf::microseconds(16666)),
+window(sf::VideoMode(800, 600), "Triangles", sf::Style::Titlebar | sf::Style::Close),
 currentTri_state(CurrentState::NONE)
 {
+    ImGui::SFML::Init(window);
+    window.setFramerateLimit(60);
+
     currentTri.setPointCount(3);
     currentTri.setFillColor(sf::Color::White);
 }
 
-void Tri::State::handle_event(sf::Event *event) {
+Tri::State::~State() {
-    if(event->type == sf::Event::KeyPressed) {
+    window.close();
-        if(event->key.code == sf::Keyboard::H) {
+    ImGui::SFML::Shutdown();
-            flags.set(0);
 }
-    } else if(event->type == sf::Event::KeyReleased) {
+
-        if(event->key.code == sf::Keyboard::H) {
+void Tri::State::handle_events() {
-            flags.reset(0);
+    while(window.pollEvent(event)) {
+        ImGui::SFML::ProcessEvent(event);
+        if(event.type == sf::Event::Closed) {
+            window.close();
+        } else if(event.type == sf::Event::KeyPressed) {
+            if(event.key.code == sf::Keyboard::H) {
+                flags.flip(0);
             }
-    } else if(event->type == sf::Event::MouseButtonPressed) {
+        } else if(event.type == sf::Event::MouseButtonPressed) {
             switch(currentTri_state) {
             case CurrentState::NONE:
                 break;
@@ -34,11 +45,20 @@ void Tri::State::handle_event(sf::Event *event) {
             }
         }
     }
+}
 
 void Tri::State::update() {
+    ImGui::SFML::Update(window, dt);
+
     // Seems misleading, but imgui handles setting up the window during update
     Tri::draw_help(this);
+
+    ImGui::EndFrame();
 }
 
 void Tri::State::draw() {
+    window.clear();
+    ImGui::SFML::Render(window);
+
+    window.display();
 }

src/state.hpp

@@ -10,6 +10,7 @@
 namespace Tri {
     struct State {
         State();
+        ~State();
         /*
          * 0 - display help
          */
@@ -18,11 +19,14 @@ namespace Tri {
         const unsigned int height;
         const sf::Time dt;
 
+        sf::RenderWindow window;
         std::vector<sf::ConvexShape> tris;
         sf::ConvexShape currentTri;
         enum CurrentState { NONE, FIRST, SECOND, THIRD } currentTri_state;
 
-        void handle_event(sf::Event *event);
+        sf::Event event;
+
+        void handle_events();
         void update();
         void draw();
     };