add simple fixed-functionality OpenGL demo to client for now

src/client/Client.cc

@@ -1,5 +1,6 @@
 
 #include "Client.h"
+#include <SFML/OpenGL.hpp>
 
 Client::Client(bool fullscreen)
 {
@@ -10,6 +11,7 @@ Client::Client(bool fullscreen)
         ? sf::Style::Fullscreen
         : sf::Style::Resize | sf::Style::Close;
     m_window = new sf::Window(mode, "Treacherous Terrain", style);
+    resize_window(m_window->getSize().x, m_window->getSize().y);
 }
 
 void Client::run()
@@ -19,14 +21,59 @@ void Client::run()
         sf::Event event;
         while (m_window->pollEvent(event))
         {
-            if (event.type == sf::Event::Closed)
+            switch (event.type)
+            {
+            case sf::Event::Closed:
                 m_window->close();
-
+                break;
-            if ( (event.type == sf::Event::KeyPressed)
+            case sf::Event::KeyPressed:
-                    && (event.key.code == sf::Keyboard::Escape) )
+                switch (event.key.code)
+                {
+                case sf::Keyboard::Escape:
                     m_window->close();
+                    break;
+                default:
+                    break;
                 }
+                break;
+            case sf::Event::Resized:
+                resize_window(event.size.width, event.size.height);
+                break;
+            default:
+                break;
+            }
+        }
+
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+        /* simple fixed-functionality drawing demo for now */
+        glPushMatrix();
+        glRotatef(m_clock.getElapsedTime().asSeconds() * 180.0f, 0, 0, 1);
+        glBegin(GL_QUADS);
+        glColor3f(1, 0.6, 0.1);
+        glVertex2f(1, 1);
+        glColor3f(0, 0, 1);
+        glVertex2f(-1, 1);
+        glColor3f(1, 0, 0);
+        glVertex2f(-1, -1);
+        glColor3f(0, 1, 0);
+        glVertex2f(1, -1);
+        glEnd();
+        glPopMatrix();
 
         m_window->display();
     }
 }
+
+void Client::initgl()
+{
+    glShadeModel(GL_SMOOTH);
+    glDisable(GL_LIGHTING);
+}
+
+void Client::resize_window(int width, int height)
+{
+    glViewport(0, 0, width, height);
+    float aspect = (float)width / (float)height;
+    glOrtho(-1.2 * aspect, 1.2 * aspect, -1.2, 1.2, 1, -1);
+}

src/client/Client.h

@@ -11,7 +11,10 @@ class Client
         Client(bool fullscreen);
         void run();
     protected:
+        void initgl();
+        void resize_window(int width, int height);
         refptr<sf::Window> m_window;
+        sf::Clock m_clock;
 };
 
 #endif