vector shortangle_vxy(vector ang1, vector ang2);
vector angleofs(entity from, entity to);
vector angleofs3(vector from, vector from_a, entity to);
void FireImoBeam(entity this, vector start, vector end, vector smin, vector smax, float bforce, float f_dmg, float f_velfactor, float deathtype);
vector shortangle_vxy(vector ang1, vector ang2);
vector angleofs(entity from, entity to);
vector angleofs3(vector from, vector from_a, entity to);
void FireImoBeam(entity this, vector start, vector end, vector smin, vector smax, float bforce, float f_dmg, float f_velfactor, float deathtype);