fps counter

diff --git a/src/game.c b/src/game.c
index e11543f..7dbdef8 100644 (file)
--- a/src/game.c
+++ b/src/game.c
@@ -1,6 +1,7 @@
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <GL/gl.h>
+#include "miniglut.h"
 #include <GL/glu.h>
 #include "game.h"
 #include "input.h"
@@ -55,6 +56,8 @@ void game_shutdown(void)
 {
        int i;
 
+       putchar('\n');
+
        for(i=0; i<num_screens; i++) {
                if(screens[i]->destroy) {
                        screens[i]->destroy();
@@ -64,11 +67,27 @@ void game_shutdown(void)
 
 void game_display(void)
 {
+       static long nframes, interv, prev_msec;
+       long msec;
+
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
        cur_scr->display();
 
        game_swap_buffers();
+
+
+       msec = glutGet(GLUT_ELAPSED_TIME);
+       interv += msec - prev_msec;
+       prev_msec = msec;
+       if(interv >= 1000) {
+               float fps = (float)(nframes * 1000) / interv;
+               printf("\rfps: %.2f    ", fps);
+               fflush(stdout);
+               nframes = 0;
+               interv = 0;
+       }
+       nframes++;
 }
 
 void game_reshape(int x, int y)