server.qc

Go to the documentation of this file.

#include "server.qh"

#include "common.qh"
#if defined(CSQC)
#elif defined(MENUQC)
#elif defined(SVQC)
    #include <common/constants.qh>
    #include <common/net_linked.qh>
    #include <common/mapobjects/subs.qh>
    #include <common/mapobjects/teleporters.qh>
    #include <common/util.qh>
    #include <common/weapons/_all.qh>
    #include <common/stats.qh>
    #include <server/utils.qh>
    #include <server/weapons/common.qh>
#endif

#ifdef SVQC
bool autocvar_sv_warpzone_allow_selftarget;
#endif

#ifdef WARPZONELIB_KEEPDEBUG
#define WARPZONELIB_REMOVEHACK
#endif

// for think function
.vector warpzone_save_origin;
.vector warpzone_save_angles;
.vector warpzone_save_eorigin;
.vector warpzone_save_eangles;

// for all entities
.vector warpzone_oldorigin, warpzone_oldvelocity, warpzone_oldangles;
.float warpzone_teleport_time;
.float warpzone_teleport_finishtime;
.entity warpzone_teleport_zone;

#define WarpZone_StoreProjectileData(e_) MACRO_BEGIN \
    entity e = e_; \
    e.warpzone_oldorigin = e.origin; \
    e.warpzone_oldvelocity = e.velocity; \
    e.warpzone_oldangles = e.angles; \
    MACRO_END

void WarpZone_TeleportPlayer(entity teleporter, entity player, vector to, vector to_angles, vector to_velocity)
{
#ifdef SVQC
    player.lastteleport_origin = player.origin;
    player.lastteleporttime = time;
#endif
    setorigin(player, to); // NOTE: this also aborts the move, when this is called by touch
    player.angles = to_angles;
#ifdef SVQC
    player.oldorigin = to; // for DP's unsticking
    player.fixangle = true;
    if (IS_BOT_CLIENT(player))
    {
        // FIXME find a way to smooth view's angles change for bots too
        player.v_angle = player.angles;
        bot_aim_reset(player);
    }
#endif
    player.velocity = to_velocity;

    BITXOR_ASSIGN(player.effects, EF_TELEPORT_BIT);

    if(IS_PLAYER(player))
        BITCLR_ASSIGN(player.flags, FL_ONGROUND);

    WarpZone_PostTeleportPlayer_Callback(player);
}

#ifdef SVQC
bool WarpZone_Teleported_Send(entity this, entity to, int sf)
{
    WriteHeader(MSG_ENTITY, ENT_CLIENT_WARPZONE_TELEPORTED);
    WriteVector(MSG_ENTITY, this.angles);
    return true;
}
#endif

float WarpZone_Teleport(entity wz, entity player, float f0, float f1)
{
    vector o0, a0, v0, o1, a1, v1, o10;

    o0 = player.origin + player.view_ofs;
    v0 = player.velocity;
    a0 = player.angles;

    o10 = o1 = WarpZone_TransformOrigin(wz, o0);
    v1 = WarpZone_TransformVelocity(wz, v0);
    if (!IS_NOT_A_CLIENT(player))
        a1 = WarpZone_TransformVAngles(wz, PHYS_INPUT_ANGLES(player));
    else
        a1 = WarpZone_TransformAngles(wz, a0);

    if(f0 != 0 || f1 != 0)
    {
        // retry last move but behind the warpzone!
        // we must first go back as far as we can, then forward again, to not cause double touch events!

        tracebox(o1 - player.view_ofs + v1 * frametime * f1, player.mins, player.maxs, o1 - player.view_ofs + v1 * frametime * f0, MOVE_WORLDONLY, player);
        {
            entity own;
            own = player.owner;
            player.owner = NULL;
            tracebox(trace_endpos, player.mins, player.maxs, o1 - player.view_ofs + v1 * frametime * f1, MOVE_NORMAL, player); // this should get us through the warpzone
            player.owner = own;
        }
        o1 = trace_endpos + player.view_ofs;

        float d, dv, md;
        md = max(vlen(player.mins), vlen(player.maxs));
        d = WarpZone_TargetPlaneDist(wz, o1);
        dv = WarpZone_TargetPlaneDist(wz, v1);
        if(d < 0)
            o1 = o1 - v1 * (d / dv);
    }

    // put him out of solid
    tracebox(o1 - player.view_ofs, player.mins, player.maxs, o1 - player.view_ofs, MOVE_NOMONSTERS, player);
    if(trace_startsolid)
    {
        setorigin(player, o1 - player.view_ofs);
        if(WarpZoneLib_MoveOutOfSolid(player))
        {
            o1 = player.origin + player.view_ofs;
            setorigin(player, o0 - player.view_ofs);
        }
        else
        {
            LOG_INFO("would have to put player in solid, won't do that");
            setorigin(player, o0 - player.view_ofs);
            return 0;
        }
    }

    // do the teleport
    WarpZone_RefSys_Add(player, wz);
    WarpZone_TeleportPlayer(wz, player, o1 - player.view_ofs, a1, v1);
    WarpZone_StoreProjectileData(player);
    player.warpzone_teleport_time = time;
    player.warpzone_teleport_finishtime = time;
    player.warpzone_teleport_zone = wz;

#ifdef SVQC
    // prevent further teleports back
    float dt = (o1 - o10) * v1 * (1 / (v1 * v1));
    if(dt < PHYS_INPUT_FRAMETIME)
        player.warpzone_teleport_finishtime += PHYS_INPUT_FRAMETIME - dt;
#endif

#ifndef WARPZONE_USE_FIXANGLE
    #ifdef SVQC
    if(IS_VEHICLE(player) && player.owner)
        player = player.owner; // hax
    if(IS_PLAYER(player))
    {
        // instead of fixangle, send the transform to the client for smoother operation
        player.fixangle = false;

        entity ts = new(warpzone_teleported);
        setmodel(ts, MDL_Null);
        setSendEntity(ts, WarpZone_Teleported_Send);
        ts.SendFlags = 0xFFFFFF;
        ts.drawonlytoclient = player;
        setthink(ts, SUB_Remove);
        ts.nextthink = time + 1;
        ts.owner = player;
        ts.enemy = wz;
        ts.effects = EF_NODEPTHTEST;
        ts.angles = wz.warpzone_transform;
    }
    #elif defined(CSQC)
    setproperty(VF_CL_VIEWANGLES, WarpZone_TransformVAngles(wz, getpropertyvec(VF_CL_VIEWANGLES)));
    //if(checkextension("DP_CSQC_ROTATEMOVES"))
        //CL_RotateMoves(wz.warpzone_transform);
    #endif
#endif

    return 1;
}

void WarpZone_Touch(entity this, entity toucher)
{
    if(toucher.classname == "trigger_warpzone")
        return;

    if(time <= toucher.warpzone_teleport_finishtime) // already teleported this frame
        return;

    // FIXME needs a better check to know what is safe to teleport and what not
    if(toucher.move_movetype == MOVETYPE_NONE || toucher.move_movetype == MOVETYPE_FOLLOW || toucher.tag_entity)
        return;

    if(WarpZoneLib_ExactTrigger_Touch(this, toucher))
        return;

    if(WarpZone_PlaneDist(this, toucher.origin + toucher.view_ofs) >= 0) // wrong side of the trigger_warpzone (don't teleport yet)
        return;

    float f;
    // number of frames we need to go back:
    //   dist = 16*sqrt(2) qu
    //   dist ~ 24 qu
    //   24 qu = v*t
    //   24 qu = v*frametime*n
    //       n = 24 qu/(v*frametime)
    // for clients go only one frame though, may be too irritating otherwise
    // but max 0.25 sec = 0.25/frametime frames
    //       24/(0.25/frametime)
    //       96*frametime
    float d;
    d = 24 + max(vlen(toucher.mins), vlen(toucher.maxs));
    if(IS_NOT_A_CLIENT(toucher))
        f = -d / bound(frametime * d * 1, frametime * vlen(toucher.velocity), d);
    else
        f = -1;
    if(WarpZone_Teleport(this, toucher, f, 0))
    {
#ifdef SVQC
        SUB_UseTargets_SkipTargets(this, toucher, toucher, BIT(1) | BIT(3)); // use toucher too?
        SUB_UseTargets_SkipTargets(this.enemy, toucher, toucher, BIT(1) | BIT(2)); // use toucher too?
#endif
    }
    else
    {
        LOG_TRACE("WARPZONE FAIL AHAHAHAHAH))");
    }
}

#ifdef SVQC
bool WarpZone_Send(entity this, entity to, int sendflags)
{
    WriteHeader(MSG_ENTITY, ENT_CLIENT_WARPZONE);

    // we must send this flag for clientside to match properly too
    int f = 0;
    if(this.warpzone_isboxy)
        BITSET_ASSIGN(f, 1);
    if(this.warpzone_fadestart)
        BITSET_ASSIGN(f, 2);
    if(this.origin != '0 0 0')
        BITSET_ASSIGN(f, 4);
    WriteByte(MSG_ENTITY, f);

    // we need THESE to render the warpzone (and cull properly)...
    if(f & 4)
    {
        WriteCoord(MSG_ENTITY, this.origin.x);
        WriteCoord(MSG_ENTITY, this.origin.y);
        WriteCoord(MSG_ENTITY, this.origin.z);
    }

    WriteShort(MSG_ENTITY, this.modelindex);
    WriteCoord(MSG_ENTITY, this.mins.x);
    WriteCoord(MSG_ENTITY, this.mins.y);
    WriteCoord(MSG_ENTITY, this.mins.z);
    WriteCoord(MSG_ENTITY, this.maxs.x);
    WriteCoord(MSG_ENTITY, this.maxs.y);
    WriteCoord(MSG_ENTITY, this.maxs.z);
    WriteByte(MSG_ENTITY, bound(1, this.scale * 16, 255));

    // we need THESE to calculate the proper transform
    WriteCoord(MSG_ENTITY, this.warpzone_origin.x);
    WriteCoord(MSG_ENTITY, this.warpzone_origin.y);
    WriteCoord(MSG_ENTITY, this.warpzone_origin.z);
    WriteCoord(MSG_ENTITY, this.warpzone_angles.x);
    WriteCoord(MSG_ENTITY, this.warpzone_angles.y);
    WriteCoord(MSG_ENTITY, this.warpzone_angles.z);
    WriteCoord(MSG_ENTITY, this.warpzone_targetorigin.x);
    WriteCoord(MSG_ENTITY, this.warpzone_targetorigin.y);
    WriteCoord(MSG_ENTITY, this.warpzone_targetorigin.z);
    WriteCoord(MSG_ENTITY, this.warpzone_targetangles.x);
    WriteCoord(MSG_ENTITY, this.warpzone_targetangles.y);
    WriteCoord(MSG_ENTITY, this.warpzone_targetangles.z);

    if(f & 2)
    {
        WriteShort(MSG_ENTITY, this.warpzone_fadestart);
        WriteShort(MSG_ENTITY, this.warpzone_fadeend);
    }

    return true;
}

bool WarpZone_Camera_Send(entity this, entity to, int sendflags)
{
    int f = 0;
    WriteHeader(MSG_ENTITY, ENT_CLIENT_WARPZONE_CAMERA);

    if(this.warpzone_fadestart)
        BITSET_ASSIGN(f, 2);
    if(this.origin != '0 0 0')
        BITSET_ASSIGN(f, 4);
    WriteByte(MSG_ENTITY, f);

    // we need THESE to render the warpzone (and cull properly)...
    if(f & 4)
    {
        WriteCoord(MSG_ENTITY, this.origin.x);
        WriteCoord(MSG_ENTITY, this.origin.y);
        WriteCoord(MSG_ENTITY, this.origin.z);
    }

    WriteShort(MSG_ENTITY, this.modelindex);
    WriteCoord(MSG_ENTITY, this.mins.x);
    WriteCoord(MSG_ENTITY, this.mins.y);
    WriteCoord(MSG_ENTITY, this.mins.z);
    WriteCoord(MSG_ENTITY, this.maxs.x);
    WriteCoord(MSG_ENTITY, this.maxs.y);
    WriteCoord(MSG_ENTITY, this.maxs.z);
    WriteByte(MSG_ENTITY, bound(1, this.scale * 16, 255));

    // we need THESE to calculate the proper transform
    WriteCoord(MSG_ENTITY, this.enemy.origin.x);
    WriteCoord(MSG_ENTITY, this.enemy.origin.y);
    WriteCoord(MSG_ENTITY, this.enemy.origin.z);
    WriteCoord(MSG_ENTITY, this.enemy.angles.x);
    WriteCoord(MSG_ENTITY, this.enemy.angles.y);
    WriteCoord(MSG_ENTITY, this.enemy.angles.z);

    if(f & 2)
    {
        WriteShort(MSG_ENTITY, this.warpzone_fadestart);
        WriteShort(MSG_ENTITY, this.warpzone_fadeend);
    }

    return true;
}

#ifdef WARPZONELIB_KEEPDEBUG
float WarpZone_CheckProjectileImpact(entity player)
{
    vector o0, v0;

    o0 = player.origin + player.view_ofs;
    v0 = player.velocity;

    // if we teleported shortly before, abort
    if(time <= player.warpzone_teleport_finishtime + 0.1)
        return 0;

    // if player hit a warpzone, abort
    entity wz;
    wz = WarpZone_Find(o0 + player.mins, o0 + player.maxs);
    if(!wz)
        return 0;

#ifdef WARPZONELIB_REMOVEHACK
    LOG_INFO("impactfilter found something - and it no longer gets handled correctly - please tell divVerent whether anything behaves broken now");
#else
    LOG_INFO("impactfilter found something - and it even gets handled correctly - please tell divVerent that this code apparently gets triggered again");
#endif
    LOG_INFO("Entity type: ", player.classname);
    LOG_INFO("Origin: ", vtos(player.origin));
    LOG_INFO("Velocity: ", vtos(player.velocity));

#ifdef WARPZONELIB_REMOVEHACK
    return 0;
#else
    // retry previous move
    setorigin(player, player.warpzone_oldorigin);
    player.velocity = player.warpzone_oldvelocity;
    if(WarpZone_Teleport(wz, player, 0, 1))
    {
        SUB_UseTargets_SkipTargets(wz, player, player, BIT(1) | BIT(3));
        SUB_UseTargets_SkipTargets(wz.enemy, player, player, BIT(1) | BIT(2));
    }
    else
    {
        setorigin(player, o0 - player.view_ofs);
        player.velocity = v0;
    }

    return +1;
#endif
}
#endif
#endif

float WarpZone_Projectile_Touch(entity this, entity toucher)
{
    if(toucher.classname == "trigger_warpzone")
        return true;

    // no further impacts if we teleported this frame!
    // this is because even if we did teleport, the engine still may raise
    // touch events for the previous location
    // engine now aborts moves on teleport, so this SHOULD not happen any more
    // but if this is called from TouchAreaGrid of the projectile moving,
    // then this won't do
    if(time == this.warpzone_teleport_time)
        return true;

#ifdef SVQC
#ifdef WARPZONELIB_KEEPDEBUG
    // this SEEMS to not happen at the moment, but if it did, it would be more reliable
    {
        float save_dpstartcontents;
        float save_dphitcontents;
        float save_dphitq3surfaceflags;
        string save_dphittexturename;
        float save_allsolid;
        float save_startsolid;
        float save_fraction;
        vector save_endpos;
        vector save_plane_normal;
        float save_plane_dist;
        entity save_ent;
        float save_inopen;
        float save_inwater;
        save_dpstartcontents = trace_dpstartcontents;
        save_dphitcontents = trace_dphitcontents;
        save_dphitq3surfaceflags = trace_dphitq3surfaceflags;
        save_dphittexturename = trace_dphittexturename;
        save_allsolid = trace_allsolid;
        save_startsolid = trace_startsolid;
        save_fraction = trace_fraction;
        save_endpos = trace_endpos;
        save_plane_normal = trace_plane_normal;
        save_plane_dist = trace_plane_dist;
        save_ent = trace_ent;
        save_inopen = trace_inopen;
        save_inwater = trace_inwater;
        float f = WarpZone_CheckProjectileImpact(this);
        if (f) return (f > 0);
        trace_dpstartcontents = save_dpstartcontents;
        trace_dphitcontents = save_dphitcontents;
        trace_dphitq3surfaceflags = save_dphitq3surfaceflags;
        trace_dphittexturename = save_dphittexturename;
        trace_allsolid = save_allsolid;
        trace_startsolid = save_startsolid;
        trace_fraction = save_fraction;
        trace_endpos = save_endpos;
        trace_plane_normal = save_plane_normal;
        trace_plane_dist = save_plane_dist;
        trace_ent = save_ent;
        trace_inopen = save_inopen;
        trace_inwater = save_inwater;
    }
#endif

    if(WarpZone_Projectile_Touch_ImpactFilter_Callback(this, toucher))
        return true;
#endif

    return false;
}

#ifdef SVQC

void WarpZone_InitStep_FindOriginTarget(entity this)
{
    if(this.killtarget != "")
    {
        this.aiment = find(NULL, targetname, this.killtarget);
        if(this.aiment == NULL)
        {
            error("Warp zone with nonexisting killtarget");
            return;
        }
        this.killtarget = string_null;
    }
}

void WarpZonePosition_InitStep_FindTarget(entity this)
{
    if(this.target == "")
    {
        error("Warp zone position with no target");
        return;
    }
    this.enemy = find(NULL, targetname, this.target);
    if(this.enemy == NULL)
    {
        error("Warp zone position with nonexisting target");
        return;
    }
    if(this.enemy.aiment)
    {
        // already is positioned
        error("Warp zone position targeting already oriented warpzone");
        return;
    }
    this.enemy.aiment = this;
}

void WarpZoneCamera_Think(entity this)
{
    if(this.warpzone_save_origin != this.origin
    || this.warpzone_save_angles != this.angles
    || this.warpzone_save_eorigin != this.enemy.origin
    || this.warpzone_save_eangles != this.enemy.angles)
    {
        WarpZone_Camera_SetUp(this, this.enemy.origin, this.enemy.angles);
        this.warpzone_save_origin = this.origin;
        this.warpzone_save_angles = this.angles;
        this.warpzone_save_eorigin = this.enemy.origin;
        this.warpzone_save_eangles = this.enemy.angles;
    }
    this.nextthink = time;
}

void WarpZoneCamera_InitStep_FindTarget(entity this)
{
    entity e;
    float i;
    if(this.target == "")
    {
        error("Camera with no target");
        return;
    }
    this.enemy = NULL;
    for(e = NULL, i = 0; (e = find(e, targetname, this.target)); )
        if(random() * ++i < 1)
            this.enemy = e;
    if(this.enemy == NULL)
    {
        error("Camera with nonexisting target");
        return;
    }
    warpzone_cameras_exist = 1;
    WarpZone_Camera_SetUp(this, this.enemy.origin, this.enemy.angles);
    this.SendFlags = 0xFFFFFF;
    if(this.spawnflags & 1)
    {
        setthink(this, WarpZoneCamera_Think);
        this.nextthink = time;
    }
    else
        this.nextthink = 0;
}

void WarpZone_InitStep_UpdateTransform(entity this)
{
    vector org, ang, norm, point;
    float area;
    vector tri, a, b, c, n;
    float i_s, i_t, n_t;
    string tex;

    org = this.origin;
    if(org == '0 0 0')
        org = 0.5 * (this.mins + this.maxs);

    norm = point = '0 0 0';
    area = 0;
    for(i_s = 0; ; ++i_s)
    {
        tex = getsurfacetexture(this, i_s);
        if (!tex)
            break; // this is beyond the last one
        if(tex == "textures/common/trigger" || tex == "trigger")
            continue;
        n_t = getsurfacenumtriangles(this, i_s);
        for(i_t = 0; i_t < n_t; ++i_t)
        {
            tri = getsurfacetriangle(this, i_s, i_t);
            a = getsurfacepoint(this, i_s, tri.x);
            b = getsurfacepoint(this, i_s, tri.y);
            c = getsurfacepoint(this, i_s, tri.z);
            n = cross(c - a, b - a);
            area = area + vlen(n);
            norm = norm + n;
            point = point + vlen(n) * (a + b + c);
        }
    }
    if(area > 0)
    {
        norm = norm * (1 / area);
        point = point * (1 / (3 * area));
        if(vdist(norm, <, 0.99))
        {
            LOG_INFO("trigger_warpzone near ", vtos(this.aiment.origin), " is nonplanar. BEWARE.");
            area = 0; // no autofixing in this case
        }
        norm = normalize(norm);
    }

    ang = '0 0 0';
    if(this.aiment)
    {
        org = this.aiment.origin;
        ang = this.aiment.angles;
        if(area > 0)
        {
            org = org - ((org - point) * norm) * norm; // project to plane
            vector forward, right, up;
            MAKE_VECTORS(ang, forward, right, up);
            if(norm * forward < 0)
            {
                LOG_INFO("Position target of trigger_warpzone near ", vtos(this.aiment.origin), " points into trigger_warpzone. BEWARE.");
                norm = -1 * norm;
            }
            ang = vectoangles2(norm, up); // keep rotation, but turn exactly against plane
            ang.x = -ang.x;
            if(norm * forward < 0.99)
                LOG_INFO("trigger_warpzone near ", vtos(this.aiment.origin), " has been turned to match plane orientation (", vtos(this.aiment.angles), " -> ", vtos(ang));
            if(vdist(org - this.aiment.origin, >, 0.5))
                LOG_INFO("trigger_warpzone near ", vtos(this.aiment.origin), " has been moved to match the plane (", vtos(this.aiment.origin), " -> ", vtos(org), ").");
        }
    }
    else if(area > 0)
    {
        org = point;
        ang = vectoangles(norm);
        ang.x = -ang.x;
    }
    else
        error("cannot infer origin/angles for this warpzone, please use a killtarget or a trigger_warpzone_position");

    this.warpzone_origin = org;
    this.warpzone_angles = ang;
}

void WarpZone_InitStep_ClearTarget(entity this)
{
    if(this.enemy)
        this.enemy.enemy = NULL;
    this.enemy = NULL;
}

void WarpZone_InitStep_FindTarget(entity this)
{
    float i;
    entity e, e2;

    if(this.enemy)
        return;

    // this way only one of the two ents needs to target
    if(this.target != "")
    {
        if(!autocvar_sv_warpzone_allow_selftarget)
            this.enemy = this; // so the if(!e.enemy) check also skips this, saves one IF

        e2 = NULL;
        for(e = NULL, i = 0; (e = find(e, targetname, this.target)); )
            if(!e.enemy)
                if(e.classname == this.classname) // possibly non-warpzones may use the same targetname!
                    if(random() * ++i < 1)
                        e2 = e;
        if(!e2)
        {
            this.enemy = NULL;
            error("Warpzone with non-existing target");
            return;
        }
        this.enemy = e2;
        e2.enemy = this;
    }
}

void WarpZone_Think(entity this);
void WarpZone_InitStep_FinalizeTransform(entity this)
{
    if(!this.enemy || this.enemy.enemy != this)
    {
        error("Invalid warp zone detected. Killed.");
        return;
    }

    warpzone_warpzones_exist = 1;
    WarpZone_SetUp(this, this.warpzone_origin, this.warpzone_angles, this.enemy.warpzone_origin, this.enemy.warpzone_angles);
    settouch(this, WarpZone_Touch);
    this.SendFlags = 0xFFFFFF;
    if(this.spawnflags & 1)
    {
        setthink(this, WarpZone_Think);
        this.nextthink = time;
    }
    else
        this.nextthink = 0;
}

float warpzone_initialized;
//entity warpzone_first;
entity warpzone_position_first;
entity warpzone_camera_first;
.entity warpzone_next;
spawnfunc(misc_warpzone_position)
{
    // "target", "angles", "origin"
    this.warpzone_next = warpzone_position_first;
    warpzone_position_first = this;
}
spawnfunc(trigger_warpzone_position)
{
    spawnfunc_misc_warpzone_position(this);
}
spawnfunc(trigger_warpzone)
{
    // warp zone entities must have:
    // "killtarget" pointing to a target_position with a direction arrow
    //              that points AWAY from the warp zone, and that is inside
    //              the warp zone trigger
    // "target"     pointing to an identical warp zone at another place in
    //              the map, with another killtarget to designate its
    //              orientation

    if(!this.scale)
        this.scale = this.modelscale;
    if(!this.scale)
        this.scale = 1;
    string m;
    m = this.model;
    WarpZoneLib_ExactTrigger_Init(this);
    if(m != "")
    {
        precache_model(m);
        _setmodel(this, m); // no precision needed
    }
    setorigin(this, this.origin);
    if(this.scale)
        setsize(this, this.mins * this.scale, this.maxs * this.scale);
    else
        setsize(this, this.mins, this.maxs);
    setSendEntity(this, WarpZone_Send);
    this.SendFlags = 0xFFFFFF;
    BITSET_ASSIGN(this.effects, EF_NODEPTHTEST);
    this.warpzone_next = warpzone_first;
    warpzone_first = this;

    IL_PUSH(g_warpzones, this);
}
spawnfunc(func_camera)
{
    if(!this.scale)
        this.scale = this.modelscale;
    if(!this.scale)
        this.scale = 1;
    if(this.model != "")
    {
        precache_model(this.model);
        _setmodel(this, this.model); // no precision needed
    }
    setorigin(this, this.origin);
    if(this.scale)
        setsize(this, this.mins * this.scale, this.maxs * this.scale);
    else
        setsize(this, this.mins, this.maxs);
    if(!this.solid)
        this.solid = SOLID_BSP;
    else if(this.solid < 0)
        this.solid = SOLID_NOT;
    setSendEntity(this, WarpZone_Camera_Send);
    this.SendFlags = 0xFFFFFF;
    this.warpzone_next = warpzone_camera_first;
    warpzone_camera_first = this;
}
void WarpZones_Reconnect()
{
    for(entity e = warpzone_first; e; e = e.warpzone_next)
        WarpZone_InitStep_ClearTarget(e);
    for(entity e = warpzone_first; e; e = e.warpzone_next)
        WarpZone_InitStep_FindTarget(e);
    for(entity e = warpzone_camera_first; e; e = e.warpzone_next)
        WarpZoneCamera_InitStep_FindTarget(e);
    for(entity e = warpzone_first; e; e = e.warpzone_next)
        WarpZone_InitStep_FinalizeTransform(e);
}

void WarpZone_Think(entity this)
{
    if(this.warpzone_save_origin != this.origin
    || this.warpzone_save_angles != this.angles
    || this.warpzone_save_eorigin != this.enemy.origin
    || this.warpzone_save_eangles != this.enemy.angles)
    {
        WarpZone_InitStep_UpdateTransform(this);
        WarpZone_InitStep_UpdateTransform(this.enemy);
        WarpZone_InitStep_FinalizeTransform(this);
        WarpZone_InitStep_FinalizeTransform(this.enemy);
        this.warpzone_save_origin = this.origin;
        this.warpzone_save_angles = this.angles;
        this.warpzone_save_eorigin = this.enemy.origin;
        this.warpzone_save_eangles = this.enemy.angles;
    }
    this.nextthink = time;
}

void WarpZone_StartFrame()
{
    if (!warpzone_initialized)
    {
        warpzone_initialized = true;
        for(entity e = warpzone_first; e; e = e.warpzone_next)
            WarpZone_InitStep_FindOriginTarget(e);
        for(entity e = warpzone_position_first; e; e = e.warpzone_next)
            WarpZonePosition_InitStep_FindTarget(e);
        for(entity e = warpzone_first; e; e = e.warpzone_next)
            WarpZone_InitStep_UpdateTransform(e);
        WarpZones_Reconnect();
        WarpZone_PostInitialize_Callback();
    }

    if(warpzone_warpzones_exist)
    {
        IL_EACH(g_projectiles, true,
        {
            WarpZone_StoreProjectileData(it);
        });
    }


    FOREACH_CLIENT(true,
    {
        if(warpzone_warpzones_exist)
            WarpZone_StoreProjectileData(it); // TODO: not actually needed

        if(IS_OBSERVER(it) || it.solid == SOLID_NOT)
        if(IS_CLIENT(it)) // we don't care about it being a bot
        {
            // warpzones
            if (warpzone_warpzones_exist) {
                entity e = WarpZone_Find(it.origin + it.mins, it.origin + it.maxs);
                if (e)
                if (!WarpZoneLib_ExactTrigger_Touch(e, it))
                if (WarpZone_PlaneDist(e, it.origin + it.view_ofs) <= 0)
                    WarpZone_Teleport(e, it, -1, 0); // NOT triggering targets by this!
            }

            // teleporters
            if(it.teleportable)
            {
                entity ent = Teleport_Find(it.origin + it.mins, it.origin + it.maxs);
                if (ent)
                if (!WarpZoneLib_ExactTrigger_Touch(ent, it))
                    Simple_TeleportPlayer(ent, it); // NOT triggering targets by this!
            }
        }
    });
}

.float warpzone_reconnecting;
bool visible_to_some_client(entity ent)
{
    FOREACH_CLIENT(IS_PLAYER(it) && IS_REAL_CLIENT(it) && checkpvs(it.origin + it.view_ofs, ent),
    {
        return true;
    });
    return false;
}
void trigger_warpzone_reconnect_use(entity this, entity actor, entity trigger)
{
    // NOTE: this matches for target, not targetname, but of course
    // targetname must be set too on the other entities
    for(entity e = warpzone_first; e; e = e.warpzone_next)
        e.warpzone_reconnecting = ((this.target == "" || e.target == this.target) && !((this.spawnflags & 1) && (visible_to_some_client(e) || visible_to_some_client(e.enemy))));
    for(entity e = warpzone_camera_first; e; e = e.warpzone_next)
        e.warpzone_reconnecting = ((this.target == "" || e.target == this.target) && !((this.spawnflags & 1) && visible_to_some_client(e)));
    for(entity e = warpzone_first; e; e = e.warpzone_next)
        if(e.warpzone_reconnecting)
            WarpZone_InitStep_ClearTarget(e);
    for(entity e = warpzone_first; e; e = e.warpzone_next)
        if(e.warpzone_reconnecting)
            WarpZone_InitStep_FindTarget(e);
    for(entity e = warpzone_camera_first; e; e = e.warpzone_next)
        if(e.warpzone_reconnecting)
            WarpZoneCamera_InitStep_FindTarget(e);
    for(entity e = warpzone_first; e; e = e.warpzone_next)
        if(e.warpzone_reconnecting || e.enemy.warpzone_reconnecting)
            WarpZone_InitStep_FinalizeTransform(e);
}

spawnfunc(trigger_warpzone_reconnect)
{
    this.use = trigger_warpzone_reconnect_use;
}

spawnfunc(target_warpzone_reconnect)
{
    spawnfunc_trigger_warpzone_reconnect(this); // both names make sense here :(
}

void WarpZone_PlayerPhysics_FixVAngle(entity this)
{
#ifndef WARPZONE_DONT_FIX_VANGLE
    if(IS_REAL_CLIENT(this))
    if(this.v_angle.z <= 360) // if not already adjusted
    if(time - CS(this).ping * 0.001 < this.warpzone_teleport_time)
    {
        this.v_angle = WarpZone_TransformVAngles(this.warpzone_teleport_zone, this.v_angle);
        this.v_angle_z += 720; // mark as adjusted
    }
#endif
}

#endif