csqcmodel_hooks.qc

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#include "csqcmodel_hooks.qh"

#include <client/mutators/_mod.qh>
#include <client/player_skeleton.qh>
#include <client/weapons/projectile.qh>
#include <common/animdecide.qh>
#include <common/effects/all.inc>
#include <common/effects/all.qh>
#include <common/ent_cs.qh>
#include <common/gamemodes/_mod.qh>
#include <common/mapinfo.qh>
#include <common/physics/movetypes/movetypes.qh>
#include <common/physics/player.qh>
#include <common/viewloc.qh>
#include <lib/csqcmodel/cl_model.qh>
#include <lib/csqcmodel/cl_player.qh>
#include <lib/csqcmodel/interpolate.qh>

.float death_time;
.int modelflags;

// FEATURE: LOD
.int lodmodelindex0;
.int lodmodelindex1;
.int lodmodelindex2;
void CSQCPlayer_LOD_Apply(entity this)
{
    // LOD model loading
    if(this.lodmodelindex0 != this.modelindex)
    {
        string modelname = this.model;
        string s;

        vector mi = this.mins;
        vector ma = this.maxs;

        // set modelindex
        this.lodmodelindex0 = this.modelindex;
        this.lodmodelindex1 = this.modelindex;
        this.lodmodelindex2 = this.modelindex;

        // FIXME: this only supports 3-letter extensions
        s = strcat(substring(modelname, 0, strlen(modelname)-4), "_lod1", substring(modelname, -4, 4));
        if(fexists(s))
        {
            precache_model(s);
            _setmodel(this, s);
            if(this.modelindex)
                this.lodmodelindex1 = this.modelindex;
        }

        s = strcat(substring(modelname, 0, strlen(modelname)-4), "_lod2", substring(modelname, -4, 4));
        if(fexists(s))
        {
            precache_model(s);
            _setmodel(this, s);
            if(this.modelindex)
                this.lodmodelindex2 = this.modelindex;
        }

        _setmodel(this, modelname); // make everything normal again
        setsize(this, mi, ma);
    }

    // apply LOD
    if(autocvar_cl_playerdetailreduction <= 0)
    {
        if(autocvar_cl_playerdetailreduction <= -2)
            this.modelindex = this.lodmodelindex2;
        else if(autocvar_cl_playerdetailreduction <= -1)
            this.modelindex = this.lodmodelindex1;
        else
            this.modelindex = this.lodmodelindex0;
    }
    else
    {
        float distance = vlen(this.origin - view_origin);
        float f = (distance * current_viewzoom + 100.0) * autocvar_cl_playerdetailreduction;
        f *= 1.0 / bound(0.01, view_quality, 1);
        if(f > autocvar_cl_loddistance2)
            this.modelindex = this.lodmodelindex2;
        else if(f > autocvar_cl_loddistance1)
            this.modelindex = this.lodmodelindex1;
        else
            this.modelindex = this.lodmodelindex0;
    }
}

// FEATURE: forcemodel and model color selection (MUST be called BEFORE LOD!)
string forceplayermodels_model;
bool forceplayermodels_modelisgoodmodel;
int forceplayermodels_modelindex;
int forceplayermodels_skin;

string forceplayermodels_mymodel;
bool forceplayermodels_myisgoodmodel;
int forceplayermodels_mymodelindex;

bool forceplayermodels_attempted;

.string forceplayermodels_savemodel;
.int forceplayermodels_savemodelindex;
.int forceplayermodels_saveskin;
.int forceplayermodels_savecolormap;

.string forceplayermodels_isgoodmodel_mdl;
.bool forceplayermodels_isgoodmodel;

string forceplayermodels_goodmodel;
int forceplayermodels_goodmodelindex;

.vector glowmod;

void CSQCPlayer_ModelAppearance_PreUpdate(entity this)
{
    this.model = this.forceplayermodels_savemodel;
    this.modelindex = this.forceplayermodels_savemodelindex;
    this.skin = this.forceplayermodels_saveskin;
    this.colormap = this.forceplayermodels_savecolormap;
}
void CSQCPlayer_ModelAppearance_PostUpdate(entity this)
{
    this.forceplayermodels_savemodel = this.model;
    this.forceplayermodels_savemodelindex = this.modelindex;
    this.forceplayermodels_saveskin = this.skin;
    this.forceplayermodels_savecolormap = this.colormap;

    if(this.forceplayermodels_savemodel != this.forceplayermodels_isgoodmodel_mdl)
    {
        this.forceplayermodels_isgoodmodel = fexists(this.forceplayermodels_savemodel);
        this.forceplayermodels_isgoodmodel_mdl = this.forceplayermodels_savemodel;
        if(!this.forceplayermodels_isgoodmodel)
            LOG_INFOF("Warning: missing model %s has been used", this.forceplayermodels_savemodel);
    }
}
void CSQCPlayer_ModelAppearance_Apply(entity this, bool islocalplayer)
{
    int cm = this.forceplayermodels_savecolormap;
    cm = (cm >= 1024) ? cm : (entcs_GetClientColors(cm - 1) + 1024);

    if(MUTATOR_CALLHOOK(ForcePlayermodels_Skip, this, islocalplayer))
        goto skipforcemodels;

    // FORCEMODEL
    // which one is ALWAYS good?
    if (!forceplayermodels_goodmodel)
    {
        entity e = spawn();
        precache_model(cvar_defstring("_cl_playermodel"));
        _setmodel(e, cvar_defstring("_cl_playermodel"));
        forceplayermodels_goodmodel = e.model;
        forceplayermodels_goodmodelindex = e.modelindex;
        delete(e);
    }

    // first, try finding it from the server
    if(this.forceplayermodels_savemodelindex && this.forceplayermodels_savemodel != "null")
    {
        if(islocalplayer)
        {
            if(!isdemo()) // this is mainly cheat protection; not needed for demos
            {
                // trust server's idea of "own player model"
                forceplayermodels_modelisgoodmodel = this.forceplayermodels_isgoodmodel;
                forceplayermodels_model = this.forceplayermodels_savemodel;
                forceplayermodels_modelindex = this.forceplayermodels_savemodelindex;
                forceplayermodels_skin = this.forceplayermodels_saveskin;
                forceplayermodels_attempted = 1;
            }
        }
    }

    // forcemodel finding
    if(!forceplayermodels_attempted)
    {
        forceplayermodels_attempted = 1;

        // only if this failed, find it out on our own
        entity e = spawn();
        precache_model(autocvar__cl_playermodel);
        _setmodel(e, autocvar__cl_playermodel); // this is harmless, see below
        forceplayermodels_modelisgoodmodel = fexists(e.model);
        forceplayermodels_model = e.model;
        forceplayermodels_modelindex = e.modelindex;
        forceplayermodels_skin = autocvar__cl_playerskin;
        delete(e);
    }

    if(autocvar_cl_forcemyplayermodel != "" && autocvar_cl_forcemyplayermodel != forceplayermodels_mymodel)
    {
        entity e = spawn();
        _setmodel(e, autocvar_cl_forcemyplayermodel); // this is harmless, see below
        forceplayermodels_myisgoodmodel = fexists(e.model);
        forceplayermodels_mymodel = e.model;
        forceplayermodels_mymodelindex = e.modelindex;
        delete(e);
    }

    // apply it
    bool isfriend;

    if(teamplay)
        isfriend = (cm == 1024 + 17 * myteam);
    else
        isfriend = islocalplayer;

    if(autocvar_cl_forcemyplayermodel != "" && forceplayermodels_myisgoodmodel && isfriend)
    {
        this.model = forceplayermodels_mymodel;
        this.modelindex = forceplayermodels_mymodelindex;
        this.skin = autocvar_cl_forcemyplayerskin;
    }
    else if(autocvar_cl_forceplayermodels && forceplayermodels_modelisgoodmodel)
    {
        this.model = forceplayermodels_model;
        this.modelindex = forceplayermodels_modelindex;
        this.skin = forceplayermodels_skin;
    }
    else if(this.forceplayermodels_isgoodmodel)
    {
        this.model = this.forceplayermodels_savemodel;
        this.modelindex = this.forceplayermodels_savemodelindex;
        this.skin = this.forceplayermodels_saveskin;
    }
    else
    {
        this.model = forceplayermodels_goodmodel;
        this.modelindex = forceplayermodels_goodmodelindex;
        this.skin = this.forceplayermodels_saveskin;
    }

    LABEL(skipforcemodels)

    if(MUTATOR_CALLHOOK(ForcePlayercolors_Skip, this, islocalplayer))
        goto skipforcecolors;

    bool forceplayercolors_enabled = false;
    #define fpc autocvar_cl_forceplayercolors
    if (ISGAMETYPE(DUEL))
    {
        if ((myteam != NUM_SPECTATOR) && (fpc == 1 || fpc == 2 || fpc == 3 || fpc == 5))
            forceplayercolors_enabled = true;
    }
    else if (teamplay)
    {
        if ((team_count == 2) && (myteam != NUM_SPECTATOR) && (fpc == 2 || fpc == 4 || fpc == 5))
            forceplayercolors_enabled = true;
    }
    else
    {
        if (fpc == 1 || fpc == 2)
            forceplayercolors_enabled = true;
    }

    // forceplayercolors too
    if(teamplay)
    {
        // own team's color is never forced
        int forcecolor_friend = 0, forcecolor_enemy = 0;
        entity tm;

        if(autocvar_cl_forcemyplayercolors)
            forcecolor_friend = 1024 + autocvar_cl_forcemyplayercolors;

        if(forceplayercolors_enabled)
            forcecolor_enemy = 1024 + autocvar__cl_color;

        if(forcecolor_enemy && !forcecolor_friend)
        {
            // only enemy color is forced?
            // verify it is not equal to the friend color
            if(forcecolor_enemy == 1024 + 17 * myteam)
                forcecolor_enemy = 0;
        }

        if(forcecolor_friend && !forcecolor_enemy)
        {
            // only friend color is forced?
            // verify it is not equal to the enemy color
            for(tm = teams.sort_next; tm; tm = tm.sort_next)
                // note: we even compare against our own team.
                // if we rejected because we matched our OWN team color,
                // this is not bad; we then simply keep our color as is
                // anyway.
                if(forcecolor_friend == 1024 + 17 * tm.team)
                    forcecolor_friend = 0;
        }

        if(cm == 1024 + 17 * myteam)
        {
            if(forcecolor_friend)
                this.colormap = forcecolor_friend;
        }
        else
        {
            if(forcecolor_enemy)
                this.colormap = forcecolor_enemy;
        }
    }
    else // if(!teamplay)
    {
        if(autocvar_cl_forcemyplayercolors && islocalplayer)
            this.colormap = 1024 + autocvar_cl_forcemyplayercolors;
        else if (autocvar_cl_forceuniqueplayercolors && !islocalplayer && !ISGAMETYPE(DUEL))
        {
            // Assign each enemy unique colors
            // pick colors from 0 to 14 since 15 is the rainbow color
            // pl01 0 1, pl02 1 2, ..., pl14 13 14, pl15 14 0
            // pl16 0 2, pl17 1 3, ..., pl29 13  0, pl30 14 1
            int num = this.entnum - 1;
            int c1 = num % 15;
            int q = floor(num / 15);
            int c2 = (c1 + 1 + q) % 15;
            this.colormap = 1024 + (c1 << 4) + c2;
        }
        else if(forceplayercolors_enabled)
            this.colormap = player_localnum + 1;
    }

    LABEL(skipforcecolors)

    if((this.csqcmodel_effects & CSQCMODEL_EF_RESPAWNGHOST) && !autocvar_cl_respawn_ghosts_keepcolors)
    {
        this.glowmod = '0 0 0';
        this.colormap = 0;
        return;
    }

    // GLOWMOD AND DEATH FADING
    if(this.colormap > 0)
        this.glowmod = colormapPaletteColor(((this.colormap >= 1024) ? this.colormap : entcs_GetClientColors(this.colormap - 1)) & 0x0F, true) * 2;
    else
        this.glowmod = '1 1 1';

    if(autocvar_cl_deathglow > 0)
    {
        if(this.csqcmodel_isdead)
        {
            float min_factor = bound(0, autocvar_cl_deathglow_min, 1);
            if(this.colormap > 0)
                min_factor /= 2;
            float glow_fade = bound(0, 1 - (time - this.death_time) / autocvar_cl_deathglow, 1);
            this.glowmod *= (min_factor + glow_fade * (1 - min_factor));
            if (this.glowmod == '0 0 0')
                this.glowmod.x = 0.000001;
        }
    }

    //printf("CSQCPlayer_ModelAppearance_Apply(): state = %s, colormap = %f, glowmod = %s\n", (this.csqcmodel_isdead ? "DEAD" : "ALIVE"), this.colormap, vtos(this.glowmod));
}

// FEATURE: fallback frames
.int csqcmodel_saveframe;
.int csqcmodel_saveframe2;
#ifdef CSQCMODEL_HAVE_TWO_FRAMES
.int csqcmodel_saveframe3;
.int csqcmodel_saveframe4;
#endif
.int csqcmodel_framecount;

#define IS_DEAD_FRAME(f) ((f) == 0 || (f) == 1)
void CSQCPlayer_FallbackFrame_PreUpdate(entity this)
{
    this.frame = this.csqcmodel_saveframe;
    this.frame2 = this.csqcmodel_saveframe2;
#ifdef CSQCMODEL_HAVE_TWO_FRAMES
    this.frame3 = this.csqcmodel_saveframe3;
    this.frame4 = this.csqcmodel_saveframe4;
#endif
}
void CSQCPlayer_FallbackFrame_PostUpdate(entity this, bool isnew)
{
    this.csqcmodel_saveframe = this.frame;
    this.csqcmodel_saveframe2 = this.frame2;
#ifdef CSQCMODEL_HAVE_TWO_FRAMES
    this.csqcmodel_saveframe3 = this.frame3;
    this.csqcmodel_saveframe4 = this.frame4;
#endif

    // hack for death animations: set their frametime to zero in case a
    // player "pops in"
    if(isnew)
    {
#define FIX_FRAMETIME(f,ft) MACRO_BEGIN \
        if(IS_DEAD_FRAME(this.f) && this.ft != 0 && this.death_time != 0) \
            this.ft = this.death_time; \
MACRO_END
        FIX_FRAMETIME(frame, frame1time);
        FIX_FRAMETIME(frame2, frame2time);
#ifdef CSQCMODEL_HAVE_TWO_FRAMES
        FIX_FRAMETIME(frame3, frame3time);
        FIX_FRAMETIME(frame4, frame4time);
#endif
    }
    this.csqcmodel_isdead = IS_DEAD_FRAME(this.frame);
}
void CSQCPlayer_AnimDecide_PostUpdate(entity this, bool isnew)
{
    this.csqcmodel_isdead = boolean(this.anim_state & (ANIMSTATE_DEAD1 | ANIMSTATE_DEAD2));
}
int CSQCPlayer_FallbackFrame(entity this, int f)
{
    TC(int, f);
    if(frameduration(this.modelindex, f) > 0)
        return f; // goooooood
    if(frameduration(this.modelindex, 1) <= 0)
        return f; // this is a static model. We can't fix it if we wanted to
    switch(f)
    {
        case 23: return 11; // anim_melee -> anim_shoot
        case 24: return 4; // anim_duckwalkbackwards -> anim_duckwalk
        case 25: return 4; // anim_duckwalkstrafeleft -> anim_duckwalk
        case 26: return 4; // anim_duckwalkstraferight -> anim_duckwalk
        case 27: return 4; // anim_duckwalkforwardright -> anim_duckwalk
        case 28: return 4; // anim_duckwalkforwardleft -> anim_duckwalk
        case 29: return 4; // anim_duckwalkbackright -> anim_duckwalk
        case 30: return 4; // anim_duckwalkbackleft -> anim_duckwalk
    }
    LOG_DEBUGF("Frame %d missing in model %s, and we have no fallback - FAIL!", f, this.model);
    return f;
}
void CSQCPlayer_FallbackFrame_Apply(entity this)
{
    this.frame = CSQCPlayer_FallbackFrame(this, this.frame);
    this.frame2 = CSQCPlayer_FallbackFrame(this, this.frame2);
#ifdef CSQCMODEL_HAVE_TWO_FRAMES
    this.frame3 = CSQCPlayer_FallbackFrame(this, this.frame3);
    this.frame4 = CSQCPlayer_FallbackFrame(this, this.frame4);
#endif
}

// FEATURE: auto tag_index
.entity tag_entity;
.int tag_entity_lastmodelindex;
.int tag_index;
void CSQCModel_AutoTagIndex_Apply(entity this)
{
    if(this.tag_entity && wasfreed(this.tag_entity))
        this.tag_entity = NULL;

    MUTATOR_CALLHOOK(TagIndex_Update, this);

    if(this.tag_networkentity)
    {
        // we are ATTACHED!
        bool changed = 0;
        if(this.tag_entity.entnum != this.tag_networkentity)
        {
            this.tag_entity = findfloat(NULL, entnum, this.tag_networkentity);
            changed = 1;
        }

        // recursive predraw call to fix issues with forcemodels and LOD if bone indexes mismatch
        if(this.tag_entity.classname == "ENT_CLIENT_MODEL")
        {
            CSQCModel_Hook_PreDraw(this.tag_entity, (this.tag_entity.isplayermodel & ISPLAYER_CLIENT));
        }

        if(this.tag_entity.modelindex != this.tag_entity_lastmodelindex)
        {
            this.tag_entity_lastmodelindex = this.tag_entity.modelindex;
            changed = 1;
        }
        if(changed)
        {
            if(this.tag_entity)
            {
                // the best part is: IT EXISTS
                if(substring(this.model, 0, 14) == "models/weapons")
                {
                    if(substring(this.tag_entity.model, 0, 14) == "models/weapons")
                    {
                        this.tag_index = gettagindex(this.tag_entity, "weapon");
                        if(!this.tag_index)
                            this.tag_index = gettagindex(this.tag_entity, "tag_weapon");
                        if(!this.tag_index)
                        {
                            // we need to prevent this from 'appening
                            this.tag_entity = NULL;
                            this.drawmask = 0;
                            LOG_TRACE("h_ model lacks weapon attachment, but v_ model is attached to it");
                        }
                    }
                    else if((this.tag_entity.isplayermodel & ISPLAYER_MODEL))
                    {
                        skeleton_loadinfo(this.tag_entity);
                        this.tag_index = this.tag_entity.bone_weapon;
                    }
                }

                if(substring(this.tag_entity.model, 0, 14) == "models/weapons")
                {
                    this.tag_index = gettagindex(this.tag_entity, "shot");
                    if(!this.tag_index)
                        this.tag_index = gettagindex(this.tag_entity, "tag_shot");
                }

                MUTATOR_CALLHOOK(TagIndex_Apply, this);
            }
            else
            {
                // damn, see you next frame
                this.drawmask = 0;
            }
        }
    }
}

void CSQCModel_Effects_PreUpdate(entity this)
{
    this.effects = this.csqcmodel_effects;
    this.modelflags = this.csqcmodel_modelflags;
    this.traileffect = this.csqcmodel_traileffect;
}
void Reset_ArcBeam();
void CSQCModel_Effects_PostUpdate(entity this)
{
    if (this == csqcplayer) {
        if (this.csqcmodel_teleported) {
            Reset_ArcBeam();
        }
    }
    this.csqcmodel_effects = this.effects;
    this.csqcmodel_modelflags = this.modelflags;
    this.csqcmodel_traileffect = this.traileffect;
    this.effects = 0;
    this.modelflags = 0;
    if(this.csqcmodel_teleported)
        Projectile_ResetTrail(this, this.origin);
}
.int snd_looping;
void CSQCModel_Effects_Apply(entity this)
{
    int eff = this.csqcmodel_effects & ~CSQCMODEL_EF_RESPAWNGHOST;
    int tref = this.csqcmodel_traileffect;

    this.renderflags &= ~(RF_DEPTHHACK | RF_ADDITIVE | RF_FULLBRIGHT | EF_NOSHADOW | RF_USEAXIS);
    this.effects = 0;
    this.traileffect = 0;

    if(eff & EF_BRIGHTFIELD)
        tref = EFFECT_TR_NEXUIZPLASMA.m_id;
    // ignoring EF_MUZZLEFLASH
    if(eff & EF_BRIGHTLIGHT)
        adddynamiclight(this.origin, 400, '3 3 3');
    if(eff & EF_DIMLIGHT)
        adddynamiclight(this.origin, 200, '1.5 1.5 1.5');
    if((eff & EF_NODRAW) || (this.alpha < 0))
        this.drawmask = 0;
    if(eff & EF_ADDITIVE)
        this.renderflags |= RF_ADDITIVE;
    if(eff & EF_BLUE)
        adddynamiclight(this.origin, 200, '0.15 0.15 1.5');
    if(eff & EF_RED)
        adddynamiclight(this.origin, 200, '1.5 0.15 0.15');
    // ignoring EF_NOGUNBOB
    if(eff & EF_FULLBRIGHT)
        this.renderflags |= RF_FULLBRIGHT;
    if(eff & EF_FLAME)
    {
        boxparticles(particleeffectnum(EFFECT_EF_FLAME), this, this.absmin, this.absmax, this.velocity, this.velocity, bound(0, frametime, 0.1), 0);
        //pointparticles(EFFECT_EF_FLAME, this.origin, '0 0 0', bound(0, frametime, 0.1));
    }
    if(eff & EF_STARDUST)
    {
        boxparticles(particleeffectnum(EFFECT_EF_STARDUST), this, this.absmin, this.absmax, this.velocity, this.velocity, bound(0, frametime, 0.1), 0);
        //pointparticles(EFFECT_EF_STARDUST, this.origin, '0 0 0', bound(0, frametime, 0.1));
    }
    if(eff & EF_NOSHADOW)
        this.renderflags |= RF_NOSHADOW;
    if(eff & EF_NODEPTHTEST)
        this.renderflags |= RF_DEPTHHACK;
    // ignoring EF_SELECTABLE
    if(eff & EF_DOUBLESIDED)
        this.effects |= EF_DOUBLESIDED;
    if(eff & EF_NOSELFSHADOW)
        this.effects |= EF_NOSELFSHADOW;
    if(eff & EF_DYNAMICMODELLIGHT)
        this.renderflags |= RF_DYNAMICMODELLIGHT;
    // ignoring EF_UNUSED18, EF_UNUSED19, EF_RESTARTANIM_BIT, EF_TELEPORT_BIT, EF_LOWPRECISION
    if(this.csqcmodel_modelflags & MF_ROCKET)
        tref = EFFECT_TR_ROCKET.m_id;
    if(this.csqcmodel_modelflags & MF_GRENADE)
        tref = EFFECT_TR_GRENADE.m_id;
    if(this.csqcmodel_modelflags & MF_GIB)
        tref = EFFECT_TR_BLOOD.m_id;
    if(this.csqcmodel_modelflags & MF_ROTATE)
    {
        // This will be hard to replace with MAKE_VECTORS because it's called as part of the predraw function
        // as documented in csprogs.h in the engine. The globals can then be read in many places in the engine.
        // However MF_ROTATE is currently only used in one place - might be possible to get rid of it entirely.
        this.renderflags |= RF_USEAXIS;
        makevectors(this.angles + '0 100 0' * fmod(time, 3.6));
    }
    if(this.csqcmodel_modelflags & MF_TRACER)
        tref = EFFECT_TR_WIZSPIKE.m_id;
    if(this.csqcmodel_modelflags & MF_ZOMGIB)
        tref = EFFECT_TR_SLIGHTBLOOD.m_id;
    if(this.csqcmodel_modelflags & MF_TRACER2)
        tref = EFFECT_TR_KNIGHTSPIKE.m_id;
    if(this.csqcmodel_modelflags & MF_TRACER3)
        tref = EFFECT_TR_VORESPIKE.m_id;

    this.traileffect = tref;

    if(this.drawmask)
        Projectile_DrawTrail(this, this.origin);
    else
        Projectile_ResetTrail(this, this.origin);

    if(this.csqcmodel_effects & CSQCMODEL_EF_RESPAWNGHOST)
        this.renderflags |= RF_ADDITIVE;
        // also special in CSQCPlayer_GlowMod_Apply

    if(this.csqcmodel_modelflags & MF_ROCKET)
    {
        if(!this.snd_looping)
        {
            sound(this, CH_TRIGGER_SINGLE, SND_JETPACK_FLY, VOL_BASE, autocvar_cl_jetpack_attenuation);
            this.snd_looping = CH_TRIGGER_SINGLE;
        }
    }
    else
    {
        if(this.snd_looping)
        {
            sound(this, this.snd_looping, SND_Null, VOL_BASE, autocvar_cl_jetpack_attenuation);
            this.snd_looping = 0;
        }
    }
}

// general functions
.int csqcmodel_predraw_run;
.int anim_frame;
.int anim_frame1time;
.int anim_frame2;
.int anim_frame2time;
.int anim_saveframe;
.int anim_saveframe1time;
.int anim_saveframe2;
.int anim_saveframe2time;
.int anim_prev_pmove_flags;
void CSQCModel_Hook_PreDraw(entity this, bool isplayer)
{
    if(this.csqcmodel_predraw_run == framecount)
        return;
    this.csqcmodel_predraw_run = framecount;

    if(!this.modelindex || this.model == "null")
    {
        this.drawmask = 0;
        if(this.snd_looping > 0)
        {
            sound(this, this.snd_looping, SND_Null, VOL_BASE, autocvar_cl_jetpack_attenuation);
            this.snd_looping = 0;
        }
        return;
    }
    else
        this.drawmask = MASK_NORMAL;

    if((this.isplayermodel & ISPLAYER_MODEL) && this.drawmask) // this checks if it's a player MODEL!
    {
        CSQCPlayer_ModelAppearance_Apply(this, (this.isplayermodel & ISPLAYER_LOCAL));
        CSQCPlayer_LOD_Apply(this);

        if(!isplayer)
        {
            skeleton_loadinfo(this);
            bool doblend = (this.bone_upperbody >= 0);
            CSQCPlayer_FallbackFrame_Apply(this);
            if(doblend)
            {
                skeleton_from_frames(this, this.csqcmodel_isdead);
            }
            else
            {
                free_skeleton_from_frames(this);
                // just in case, clear these (we're animating in frame and frame3)
                this.lerpfrac = 0;
                this.lerpfrac4 = 0;
            }
        }
        else
        {
            // we know that frame3 and frame4 fields, used by InterpolateAnimation, are left alone - but that is all we know!
            skeleton_loadinfo(this);
            bool doblend = (this.bone_upperbody >= 0);
            bool onground = 0;
            if(this == csqcplayer)
            {
                if(IS_ONGROUND(this))
                    onground = 1;
                this.anim_prev_pmove_flags = this.flags;
                if(this.flags & FL_DUCKED)
                    animdecide_setstate(this, this.anim_state | ANIMSTATE_DUCK, false);
                else if(this.anim_state & ANIMSTATE_DUCK)
                    animdecide_setstate(this, this.anim_state - ANIMSTATE_DUCK, false);
            }
            else
            {
                tracebox(this.origin + '0 0 1', this.mins, this.maxs, this.origin - '0 0 4', MOVE_NORMAL, this);
                if(trace_startsolid || trace_fraction < 1)
                    onground = 1;
                // predicted clients handle smoothing in the prediction code
                this.origin = CSQCModel_ApplyStairSmoothing(this, onground, this.origin);
            }
            animdecide_load_if_needed(this);
            animdecide_setimplicitstate(this, onground);
            animdecide_setframes(this, doblend, anim_frame, anim_frame1time, anim_frame2, anim_frame2time);
            int sf = 0;
            if(this.anim_saveframe != this.anim_frame || this.anim_saveframe1time != this.anim_frame1time)
                sf |= CSQCMODEL_PROPERTY_FRAME;
            if(this.anim_saveframe2 != this.anim_frame2 || this.anim_saveframe2time != this.anim_frame2time)
                sf |= CSQCMODEL_PROPERTY_FRAME2;
            this.anim_saveframe = this.anim_frame;
            this.anim_saveframe1time = this.anim_frame1time;
            this.anim_saveframe2 = this.anim_frame2;
            this.anim_saveframe2time = this.anim_frame2time;
            // Note: we always consider lerpfrac "changed", as it uses fixed values every time anyway.
            // This ensures that .frame etc. are always written.
            CSQCModel_InterpolateAnimation_2To4_PreNote(this, sf | CSQCMODEL_PROPERTY_LERPFRAC);
            this.lerpfrac = (doblend ? 0.5 : 0);
            this.frame = this.anim_frame;
            this.frame1time = this.anim_frame1time;
            this.frame2 = this.anim_frame2;
            this.frame2time = this.anim_frame2time;
            CSQCModel_InterpolateAnimation_2To4_Note(this, sf | CSQCMODEL_PROPERTY_LERPFRAC, false);
            CSQCModel_InterpolateAnimation_2To4_Do(this);
            if(doblend)
            {
                skeleton_from_frames(this, this.csqcmodel_isdead);
            }
            else
            {
                free_skeleton_from_frames(this);
                // just in case, clear these (we're animating in frame and frame3)
                this.lerpfrac = 0;
                this.lerpfrac4 = 0;
            }
        }
    }

    CSQCModel_AutoTagIndex_Apply(this);

    CSQCModel_Effects_Apply(this);
}

void CSQCModel_Hook_PreUpdate(entity this, bool isnew, bool isplayer, bool islocalplayer)
{
    // interpolate v_angle
    this.iflags |= IFLAG_V_ANGLE_X;
    // revert to values from server
    CSQCModel_Effects_PreUpdate(this);
    if((this.isplayermodel & ISPLAYER_MODEL))
    {
        if(!isplayer)
            CSQCPlayer_FallbackFrame_PreUpdate(this);
        CSQCPlayer_ModelAppearance_PreUpdate(this);
    }
}

void CSQCModel_Hook_PostUpdate(entity this, bool isnew, bool isplayer, bool islocalplayer)
{
    // is it a player model? (shared state)
    bool is_playermodel = (substring(this.model, 0, 14) == "models/player/" || substring(this.model, 0, 17) == "models/ok_player/" || 
                            (substring(this.model, 0, 16) == "models/monsters/" && (this.isplayermodel & BIT(1))));
    this.isplayermodel = BITSET(this.isplayermodel, ISPLAYER_MODEL, is_playermodel);
    this.csqcmodel_isdead = false; // workaround for dead players who become a spectator

    // save values set by server
    if((this.isplayermodel & ISPLAYER_MODEL))
    {
        CSQCPlayer_ModelAppearance_PostUpdate(this);
        if(isplayer)
            CSQCPlayer_AnimDecide_PostUpdate(this, isnew);
        else
            CSQCPlayer_FallbackFrame_PostUpdate(this, isnew);
    }
    CSQCModel_Effects_PostUpdate(this);
}