1.1 --- a/src/mballs.cc	Tue Feb 19 23:46:44 2013 +0200
     1.2 +++ b/src/mballs.cc	Wed Feb 20 04:55:03 2013 +0200
     1.3 @@ -4,6 +4,7 @@
     1.4  #include "metasurf.h"
     1.5  #include "vmath/vmath.h"
     1.6  #include "dsys.h"
     1.7 +#include "udg.h"
     1.8  
     1.9  struct MetaBall {
    1.10  	Vector3 pos;
    1.11 @@ -26,6 +27,8 @@
    1.12  static struct metasurface *msurf;
    1.13  static float floor_height = -0.95;
    1.14  
    1.15 +static struct dsys_event *evrise;
    1.16 +
    1.17  bool mball_init()
    1.18  {
    1.19  	static const float bbmin = -VOL_SZ / 2.0;
    1.20 @@ -49,6 +52,9 @@
    1.21  		balls.push_back(mb);
    1.22  	}
    1.23  
    1.24 +	evrise = dsys_event(demo, "mball_rise");
    1.25 +	dsys_set_event_eval(evrise, dsys_eval_sigmoid);
    1.26 +
    1.27  	return true;
    1.28  }
    1.29  
    1.30 @@ -117,11 +123,13 @@
    1.31  
    1.32  static void update(float sec)
    1.33  {
    1.34 +	float trise = dsys_event_value(evrise);
    1.35 +
    1.36  	for(size_t i=0; i<balls.size(); i++) {
    1.37  		float t = sec + balls[i].phase_offs;
    1.38  		balls[i].pos.x = cos(t * 1.8) * balls[i].orbit;
    1.39  		balls[i].pos.z = sin(t * 1.2) * balls[i].orbit;
    1.40 -		balls[i].pos.y = (sin(t) + cos(t * 2.0) / 2.0 + sin(t * 3.0) / 3.0) * 0.45;
    1.41 +		balls[i].pos.y = (sin(t) + cos(t * 2.0) / 2.0 + sin(t * 3.0) / 3.0) * 0.45 - (2.0 - trise * 2.0);
    1.42  	}
    1.43  
    1.44  	for(int i=0; i<MBALL_GRID_SZ; i++) {