f64 delta = vg.time_real - board->cache_time;
if( (delta > 45.0) || (board->cache_time == 0.0) ){
board->cache_time = vg.time_real;
f64 delta = vg.time_real - board->cache_time;
if( (delta > 45.0) || (board->cache_time == 0.0) ){
board->cache_time = vg.time_real;