| target | Kontaktpunkt |
| normal | Normalen-Vektor der getroffenen Oberfläche |
| bounce | Vekktor in Abprallrichtung |
function bounce_event()
{
if (event_type == EVENT_FRICTION)
{
ent_playsound(my,whamm,50);
}
}
action bounceball()
{
my.ENABLE_FRICTION = ON; // C-Script: make entity sensitive for physics collisions
my.emask |= ENABLE_FRICTION; // lite-C
my.event = bounce_event;
... // initiate physics behavior
}