-trace_t SV_TraceBox(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask);
-trace_t SV_TraceLine(const vec3_t start, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask);
-trace_t SV_TracePoint(const vec3_t start, int type, prvm_edict_t *passedict, int hitsupercontentsmask);
+trace_t SV_TraceBox(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, float extend);
+trace_t SV_TraceLine(const vec3_t start, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask, float extend);
+trace_t SV_TracePoint(const vec3_t start, int type, prvm_edict_t *passedict, int hitsupercontentsmask, int skipsupercontentsmask, int skipmaterialflagsmask);
+int SV_EntitiesInBox(const vec3_t mins, const vec3_t maxs, int maxedicts, prvm_edict_t **resultedicts);
+
+qbool SV_CanSeeBox(int numsamples, vec_t eyejitter, vec_t enlarge, vec_t entboxexpand, vec3_t eye, vec3_t entboxmins, vec3_t entboxmaxs);
+
+void SV_MarkWriteEntityStateToClient(entity_state_t *s);