void WarpZone_InitStep_SpawnFunc();
void WarpZone_InitStep_FindTarget();
void WarpZone_InitStep_UpdateTransform();

// THESE must be defined by calling QC code:
void spawnfunc_trigger_warpzone(); // must call the init steps in order, first all spawnfunc init steps, then all findtarget init steps, then all updatetransform init steps
void WarpZone_PostTeleportPlayer(entity pl);

// server must also define a float called ENT_CLIENT_WARPZONE for the initial byte of WarpZone entities
const float ENT_CLIENT_WARPZONE;

vector WarpZone_trace_endpos; // UNtransformed endpos
void WarpZone_TraceBox(vector org, vector min, vector max, vector end, float nomonsters, entity forent);
void WarpZone_TraceLine(vector org, vector end, float nomonsters, entity forent);
void WarpZone_TrailParticles(entity own, float eff, vector org, vector end);