1.1 --- a/src/effect.cc	Thu Aug 20 04:52:30 2015 +0300
     1.2 +++ b/src/effect.cc	Thu Aug 20 06:40:23 2015 +0300
     1.3 @@ -1,5 +1,7 @@
     1.4  #include <stdio.h>
     1.5  #include <stdlib.h>
     1.6 +#include <unistd.h>
     1.7 +#include <sys/time.h>
     1.8  #include "opengl.h"
     1.9  #include "effect.h"
    1.10  #include "psys.h"
    1.11 @@ -20,6 +22,7 @@
    1.12  static bool exploding;
    1.13  
    1.14  static void explode();
    1.15 +static unsigned long get_msec();
    1.16  
    1.17  bool fx_init()
    1.18  {
    1.19 @@ -105,9 +108,10 @@
    1.20  	delete simg[1];
    1.21  }
    1.22  
    1.23 -void fx_draw(unsigned long msec)
    1.24 +void fx_draw()
    1.25  {
    1.26  	static unsigned long prev_msec, ps_start_time;
    1.27 +	unsigned long msec = get_msec();
    1.28  	float dt = (msec - prev_msec) / 1000.0;
    1.29  	prev_msec = msec;
    1.30  
    1.31 @@ -140,3 +144,17 @@
    1.32  	//psys.explode(Vector3(0, -0.2, 0), 3.0, 1.5);
    1.33  	//psys.pp = ppexpl;
    1.34  }
    1.35 +
    1.36 +static unsigned long get_msec()
    1.37 +{
    1.38 +	static struct timeval tv0;
    1.39 +	struct timeval tv;
    1.40 +
    1.41 +	gettimeofday(&tv, 0);
    1.42 +	if(tv0.tv_sec == 0 && tv0.tv_usec == 0) {
    1.43 +		tv0 = tv;
    1.44 +		return 0;
    1.45 +	}
    1.46 +
    1.47 +	return (tv.tv_sec - tv0.tv_sec) * 1000 + (tv.tv_usec - tv0.tv_usec) / 1000;
    1.48 +}

     2.1 --- a/src/effect.h	Thu Aug 20 04:52:30 2015 +0300
     2.2 +++ b/src/effect.h	Thu Aug 20 06:40:23 2015 +0300
     2.3 @@ -1,10 +1,9 @@
     2.4 -#ifndef TBOMB_H_
     2.5 -#define TBOMB_H_
     2.6 +#ifndef EFFECT_H_
     2.7 +#define EFFECT_H_
     2.8  
     2.9  bool fx_init();
    2.10  void fx_cleanup();
    2.11  
    2.12 -void fx_draw(unsigned long msec);
    2.13 -void fx_dbg();
    2.14 +void fx_draw();
    2.15  
    2.16 -#endif	// TBOMB_H_
    2.17 +#endif	// EFFECT_H_

     3.1 --- a/src/main.cc	Thu Aug 20 04:52:30 2015 +0300
     3.2 +++ b/src/main.cc	Thu Aug 20 06:40:23 2015 +0300
     3.3 @@ -17,8 +17,6 @@
     3.4  static int win_width = 1280, win_height = 800;
     3.5  static bool fullscreen;
     3.6  
     3.7 -static unsigned long start_time;
     3.8 -
     3.9  int main(int argc, char **argv)
    3.10  {
    3.11  	glutInit(&argc, argv);
    3.12 @@ -43,18 +41,15 @@
    3.13  	}
    3.14  	atexit(fx_cleanup);
    3.15  
    3.16 -	start_time = glutGet(GLUT_ELAPSED_TIME);
    3.17  	glutMainLoop();
    3.18  	return 0;
    3.19  }
    3.20  
    3.21  void display()
    3.22  {
    3.23 -	unsigned long msec = glutGet(GLUT_ELAPSED_TIME) - start_time;
    3.24 -
    3.25  	glClear(GL_COLOR_BUFFER_BIT);
    3.26  
    3.27 -	fx_draw(msec);
    3.28 +	fx_draw();
    3.29  
    3.30  	glutSwapBuffers();
    3.31  	assert(glGetError() == GL_NO_ERROR);