Added c resize window function

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

raycaster.c

@@ -469,6 +469,11 @@ void display()
   glutSwapBuffers();
 }
 
+void resize(int w, int h)
+{
+  glutReshapeWindow(1024, 512);
+}
+
 // * Check for key presses and move the "player" accordingly
 void buttons(unsigned char key, int x, int y)
 {
@@ -552,7 +557,12 @@ int main(int argc, char *argv[])
 {
   glutInit(&argc, argv);
   glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA);
-  glutInitWindowSize(TOTAL_WIDTH, TOTAL_HEIGHT);
+  // glutInitWindowSize(TOTAL_WIDTH, TOTAL_HEIGHT);
+  glutInitWindowSize(1024, 510);
+
+  // Initialize the window to the center of the screen
+  glutInitWindowPosition(200, 200);
+
   glutCreateWindow("Raycaster");
 
   init();
@@ -560,6 +570,9 @@ int main(int argc, char *argv[])
   // Send display parameters to the display function
   glutDisplayFunc(display);
 
+  // Handle window resizes
+  glutReshapeFunc(resize);
+
   // Send key presses to the keyboard function
   glutKeyboardFunc(buttons);