pyramid: half-assed fps counter, for fun

1 files changed, 14 insertions, 2 deletions

diff --git a/sdl/pyramid.c b/sdl/pyramid.c
index 153f13f..35cd1c6 100644
--- a/sdl/pyramid.c
+++ b/sdl/pyramid.c
@@ -1,6 +1,5 @@
 /* pyramid.c
  *
- * TODO: use native tga loader, fix window resize, multiple keys
  */
  
 #include <SDL/SDL.h>
@@ -258,7 +257,7 @@ int main(int argc, char **argv)
         exit(-1);
     }
     atexit(SDL_Quit);
-    SDL_WM_SetCaption("Textured Pyramid", "Textured Pyramid");
+    SDL_WM_SetCaption("Textured Pyramid", NULL);
     
     if ((screen = SDL_SetVideoMode(640, 480, 32, SDL_OPENGL | SDL_GL_DOUBLEBUFFER
                          | SDL_RESIZABLE)) == NULL)
@@ -288,10 +287,23 @@ int main(int argc, char **argv)
         
     SetupRC();
     
+    /* fps counter */
+    Uint32 startclock = 0;
+    Uint32 deltaclock = 0;
+    Uint32 current_fps = 0;
     for (;;)
     {
+        startclock = SDL_GetTicks();
         processEvents();
         render();
+
+        deltaclock = SDL_GetTicks() - startclock;
+        if (deltaclock != 0 )
+	        current_fps = 1000 / deltaclock;
+
+        static char buffer[30] = { 0 };
+        sprintf(buffer, "Textured Pyramid: %04d fps", current_fps);
+        SDL_WM_SetCaption(buffer, NULL); 
     }
     
     return 0;