Ah I see. Sure, BEAM stretches the particle along the p.vel_x direction. Just do the movement by yourself then (without setting MOVE), for example as follows:
void p_event(PARTICLE* p) { p.skill_z += 0.25*time_step; // maybe add a maxv limit here p.z += p.skill_z*time_step; }
"Falls das Resultat nicht einfach nur dermassen gut aussieht, sollten Sie nochmal von vorn anfangen..." - Manual