casing.velocity = casing.velocity + 2 * prandomvec();
casing.avelocity = '0 250 0' + 100 * prandomvec();
set_movetype(casing, MOVETYPE_BOUNCE);
casing.velocity = casing.velocity + 2 * prandomvec();
casing.avelocity = '0 250 0' + 100 * prandomvec();
set_movetype(casing, MOVETYPE_BOUNCE);