Measure and subtract physics time from the wait

git-svn-id: svn://cook.msm.cam.ac.uk:745/thrust3d/thrust3d@233 84d2e878-0bd5-11dd-ad15-13eda11d74c5

1 files changed, 13 insertions, 0 deletions

diff --git a/src/physics.c b/src/physics.c
index 3472cc5..91505b9 100644
--- a/src/physics.c
+++ b/src/physics.c
@@ -15,6 +15,8 @@
 
 #include <SDL.h>
 #include <math.h>
+#include <sys/time.h>
+#include <time.h>
 
 #include "types.h"
 #include "model.h"
@@ -403,9 +405,14 @@ static void physics_process(ModelInstance *obj, Uint32 dt, Game *game) {
 void physics_step(Game *game, Uint32 t) {
 
 	Uint32 dt;
+	struct timeval tv;
+	suseconds_t us;
 	
 	dt = t - game->tlast;
 	
+	gettimeofday(&tv, NULL);
+	us = tv.tv_usec;
+	
 	/* Handle things specific to the lander craft */
 	if ( game->thrusting ) {
 		if ( game->fuel > 0.0 ) {
@@ -454,6 +461,12 @@ void physics_step(Game *game, Uint32 t) {
 	game_check_handoff(game);
 	
 	game->tlast = t;
+	
+	gettimeofday(&tv, NULL);
+	us = tv.tv_usec - us;
+	
+	game->time_physics = us;
+	
 
 }