projectile.qc

Go to the documentation of this file.

#include "projectile.qh"

#include <client/mutators/_mod.qh>
#include <common/constants.qh>
#include <common/effects/all.qh>
#include <common/effects/effect.qh>
#include <common/mutators/mutator/nades/nades.qh>
#include <common/net_linked.qh>
#include <common/physics/movetypes/movetypes.qh>
#include <lib/csqcmodel/interpolate.qh>
#include <lib/warpzone/anglestransform.qh>

.float alpha;
.float scale;
.vector colormod;

void SUB_Stop(entity this, entity toucher)
{
    this.velocity = this.avelocity = '0 0 0';
    set_movetype(this, MOVETYPE_NONE);
}

void Projectile_ResetTrail(entity this, vector to)
{
    this.trail_oldorigin = to;
    this.trail_oldtime = time;
}

void Projectile_DrawTrail(entity this, vector to)
{
    vector from = this.trail_oldorigin;
    // float t0 = this.trail_oldtime;
    this.trail_oldorigin = to;
    this.trail_oldtime = time;

    // force the effect even for stationary firemine
    if (this.cnt == PROJECTILE_FIREMINE)
        if (from == to)
            from.z += 1;

    if (this.traileffect)
    {
        particles_alphamin = particles_alphamax = particles_fade = sqrt(this.alpha);
        entity eff = REGISTRY_GET(Effects, this.traileffect);
        boxparticles(particleeffectnum(eff), this, from, to, this.velocity, this.velocity, 1, PARTICLES_USEALPHA | PARTICLES_USEFADE | PARTICLES_DRAWASTRAIL);
    }
}

void Projectile_Draw(entity this)
{
    vector rot;
    vector trailorigin;
    int f;
    bool drawn;
    float t;
    float a;

    f = this.flags;

    if (this.count & 0x80)
    {
        // UNSET_ONGROUND(this);
        if (this.move_movetype == MOVETYPE_NONE || this.move_movetype == MOVETYPE_FLY)
            Movetype_Physics_NoMatchServer(this);
        // the trivial movetypes do not have to match the
        // server's ticrate as they are ticrate independent
        // NOTE: this assumption is only true if MOVETYPE_FLY
        // projectiles detonate on impact. If they continue
        // moving, we might still be ticrate dependent.
        else
            Movetype_Physics_MatchServer(this, autocvar_cl_projectiles_sloppy);
        if (!IS_ONGROUND(this))
            if (this.velocity != '0 0 0')
                this.angles = vectoangles(this.velocity);
    }
    else
    {
        InterpolateOrigin_Do(this);
    }

    if (this.count & 0x80)
    {
        drawn = (time >= this.spawntime - 0.02);
        t = max(time, this.spawntime);
    }
    else
    {
        drawn = (this.iflags & IFLAG_VALID);
        t = time;
    }
    bool is_nade = Projectile_isnade(this.cnt);

    if (!(f & FL_ONGROUND))
    {
        rot = '0 0 0';
        if (is_nade) rot = this.avelocity;
        else switch (this.cnt)
        {
            case PROJECTILE_GRENADE_BOUNCING:
                rot = '0 -1000 0'; // sideways
                break;
            case PROJECTILE_HOOKBOMB:
                rot = '1000 0 0';  // forward
                break;
            case PROJECTILE_ROCKET:
                rot = '0 0 720'; // spinning
                break;
        }

        if (rot)
        {
            if (!rot.x && !rot.y)
            {
                // cheaper z-only rotation formula
                this.angles.z = (rot.z * (t - this.spawntime)) % 360;
                if (this.angles.z < 0)
                    this.angles.z += 360;
            }
            else
                this.angles = AnglesTransform_ToAngles(AnglesTransform_Multiply(AnglesTransform_FromAngles(this.angles), rot * (t - this.spawntime)));
        }
    }

    a = 1 - (time - this.fade_time) * this.fade_rate;
    this.alpha = bound(0, this.alphamod * a, 1);
    if (this.alpha <= 0)
        drawn = 0;
    this.renderflags = 0;

    vector ang = this.angles;
    ang.x = -ang.x;
    trailorigin = this.origin;
    if (is_nade)
    {
        makevectors(ang);
        trailorigin += v_up * 4;
    }
    else switch (this.cnt)
    {
        case PROJECTILE_GRENADE:
        case PROJECTILE_GRENADE_BOUNCING:
            makevectors(ang);
            trailorigin += v_right * 1 + v_forward * -10;
            break;
    }

    if (drawn)
        Projectile_DrawTrail(this, trailorigin);
    else
        Projectile_ResetTrail(this, trailorigin);

    this.drawmask = 0;

    if (!drawn)
        return;

    switch (this.cnt)
    {
        // Possibly add dlights here.
        default:
            break;
    }

    this.drawmask = MASK_NORMAL;
}

void loopsound(entity e, int ch, Sound samp, float vol, float attn)
{
    TC(int, ch);
    if (e.silent)
        return;

    sound(e, ch, samp, vol, attn);
    e.snd_looping = ch;
}

void Ent_RemoveProjectile(entity this)
{
    if (this.count & 0x80)
    {
        tracebox(this.origin, this.mins, this.maxs, this.origin + this.velocity * 0.05, MOVE_NORMAL, this);
        Projectile_DrawTrail(this, trace_endpos);
    }
}

NET_HANDLE(ENT_CLIENT_PROJECTILE, bool isnew)
{
    // projectile properties:
    //   kind (interpolated, or clientside)
    //
    //   modelindex
    //   origin
    //   scale
    //   if clientside:
    //     velocity
    //     gravity
    //   soundindex (hardcoded list)
    //   effects
    //
    // projectiles don't send angles, because they always follow the velocity

    int f = ReadByte();
    this.count = (f & 0x80);
    this.flags |= FL_PROJECTILE;
    this.iflags = (this.iflags & IFLAG_INTERNALMASK) | IFLAG_AUTOANGLES | IFLAG_ANGLES | IFLAG_ORIGIN;
    this.solid = SOLID_TRIGGER;
    // this.effects = EF_NOMODELFLAGS;

    // this should make collisions with bmodels more exact, but it leads to
    // projectiles no longer being able to lie on a bmodel
    this.move_nomonsters = MOVE_WORLDONLY;
    if (f & 0x40)
        SET_ONGROUND(this);
    else
        UNSET_ONGROUND(this);

    if (!this.move_time)
    {
        // for some unknown reason, we don't need to care for
        // sv_gameplayfix_delayprojectiles here.
        this.move_time = time;
        this.spawntime = time;
    }
    else
    {
        this.move_time = max(this.move_time, time);
    }

    if (!(this.count & 0x80))
        InterpolateOrigin_Undo(this);

    if (f & 1)
    {
        this.origin = ReadVector();
        setorigin(this, this.origin);
        if (this.count & 0x80)
        {
            this.velocity = ReadVector();
            if (f & 0x10)
                this.gravity = ReadCoord();
            else
                this.gravity = 0;  // none
        }

        if (time == this.spawntime || (this.count & 0x80) || (f & 0x08))
        {
            this.trail_oldorigin = this.origin;
            if (!(this.count & 0x80))
                InterpolateOrigin_Reset(this);
        }

        if (f & 0x20)
        {
            this.fade_time = time + ReadByte() * ticrate;
            this.fade_rate = 1 / (ReadByte() * ticrate);
        }
        else
        {
            this.fade_time = 0;
            this.fade_rate = 0;
        }

        int proj_team = ReadByte();
        this.team = proj_team - 1;

        if(teamplay)
        {
            if(proj_team)
                this.colormap = (this.team) * 0x11; // note: team - 1 on server (client uses different numbers)
            else
                this.colormap = 0x00;
            this.colormap |= BIT(10); // RENDER_COLORMAPPED
        }
        else
            this.colormap = proj_team;
        // TODO: projectiles use glowmaps for their color, not teams
        #if 0
        if(this.colormap > 0)
            this.glowmod = colormapPaletteColor(this.colormap & 0x0F, true) * 2;
        else
            this.glowmod = '1 1 1';
        #endif
    }

    if (f & 2)
    {
        this.cnt = ReadByte();

        this.silent = (this.cnt & 0x80);
        this.cnt = (this.cnt & 0x7F);

        this.scale = 1;
        this.traileffect = 0;
        switch (this.cnt)
        {
#define HANDLE(id) case PROJECTILE_##id: setmodel(this, MDL_PROJECTILE_##id);
            HANDLE(ELECTRO)            this.traileffect = EFFECT_TR_NEXUIZPLASMA.m_id; break;
            HANDLE(ROCKET)             this.traileffect = EFFECT_TR_ROCKET.m_id; this.scale = 2; break;
            HANDLE(CRYLINK)            this.traileffect = EFFECT_TR_CRYLINKPLASMA.m_id; break;
            HANDLE(CRYLINK_BOUNCING)   this.traileffect = EFFECT_TR_CRYLINKPLASMA.m_id; break;
            HANDLE(ELECTRO_BEAM)       this.traileffect = EFFECT_TR_NEXUIZPLASMA.m_id; break;
            HANDLE(GRENADE)            this.traileffect = EFFECT_TR_GRENADE.m_id; break;
            HANDLE(GRENADE_BOUNCING)   this.traileffect = EFFECT_TR_GRENADE.m_id; break;
            HANDLE(MINE)               this.traileffect = EFFECT_TR_GRENADE.m_id; break;
            HANDLE(BLASTER)            this.traileffect = EFFECT_Null.m_id; break;
            HANDLE(ARC_BOLT)           this.traileffect = EFFECT_TR_WIZSPIKE.m_id; break;
            HANDLE(HLAC)               this.traileffect = EFFECT_Null.m_id; break;
            HANDLE(PORTO_RED)          this.traileffect = EFFECT_TR_WIZSPIKE.m_id; this.scale = 4; break;
            HANDLE(PORTO_BLUE)         this.traileffect = EFFECT_TR_WIZSPIKE.m_id; this.scale = 4; break;
            HANDLE(HOOKBOMB)           this.traileffect = EFFECT_TR_KNIGHTSPIKE.m_id; break;
            HANDLE(HAGAR)              this.traileffect = EFFECT_HAGAR_ROCKET.m_id; this.scale = 0.75; break;
            HANDLE(HAGAR_BOUNCING)     this.traileffect = EFFECT_HAGAR_ROCKET.m_id; this.scale = 0.75; break;
            HANDLE(FIREBALL)           this.modelindex = 0; this.traileffect = EFFECT_FIREBALL.m_id; break; // particle effect is good enough
            HANDLE(FIREMINE)           this.modelindex = 0; this.traileffect = EFFECT_FIREMINE.m_id; break; // particle effect is good enough
            HANDLE(TAG)                this.traileffect = EFFECT_TR_ROCKET.m_id; break;
            HANDLE(FLAC)               this.scale = 0.4; this.traileffect = EFFECT_FLAC_TRAIL.m_id; break;
            HANDLE(SEEKER)             this.traileffect = EFFECT_SEEKER_TRAIL.m_id; break;

            HANDLE(MAGE_SPIKE)         this.traileffect = EFFECT_TR_VORESPIKE.m_id; break;
            HANDLE(SHAMBLER_LIGHTNING) this.traileffect = EFFECT_TR_NEXUIZPLASMA.m_id; break;

            HANDLE(RAPTORBOMB)         this.gravity = 1; this.avelocity = '0 0 180'; this.traileffect = EFFECT_Null.m_id; break;
            HANDLE(RAPTORBOMBLET)      this.gravity = 1; this.avelocity = '0 0 180'; this.traileffect = EFFECT_Null.m_id; break;
            HANDLE(RAPTORCANNON)       this.traileffect = EFFECT_TR_CRYLINKPLASMA.m_id; break;

            HANDLE(SPIDERROCKET)       this.traileffect = EFFECT_SPIDERBOT_ROCKET_TRAIL.m_id; break;
            HANDLE(WAKIROCKET)         this.traileffect = EFFECT_RACER_ROCKET_TRAIL.m_id; break;
            HANDLE(WAKICANNON)         this.traileffect = EFFECT_Null.m_id; break;

            HANDLE(BUMBLE_GUN)         this.traileffect = EFFECT_TR_NEXUIZPLASMA.m_id; break;
            HANDLE(BUMBLE_BEAM)        this.traileffect = EFFECT_TR_NEXUIZPLASMA.m_id; break;

            HANDLE(RPC)                this.traileffect = EFFECT_TR_ROCKET.m_id; break;

            HANDLE(ROCKETMINSTA_LASER) this.traileffect = EFFECT_ROCKETMINSTA_LASER(this.team).m_id; break;
#undef HANDLE
            default:
                if (MUTATOR_CALLHOOK(Ent_Projectile, this))
                    break;

                error("Received invalid CSQC projectile, can't work with this!");
                break;
        }

        this.mins = '0 0 0';
        this.maxs = '0 0 0';
        this.colormod = '0 0 0';
        settouch(this, SUB_Stop);
        set_movetype(this, MOVETYPE_TOSS);
        this.alphamod = 1;

        switch (this.cnt)
        {
            case PROJECTILE_ELECTRO:
                // only new engines support sound moving with object
                loopsound(this, CH_SHOTS_SINGLE, SND_ELECTRO_FLY, VOL_BASE, ATTEN_NORM);
                this.mins = '-4 -4 -4';
                this.maxs = '4 4 4';
                set_movetype(this, MOVETYPE_BOUNCE);
                settouch(this, func_null);
                this.bouncefactor = WEP_CVAR_SEC(electro, bouncefactor);
                this.bouncestop = WEP_CVAR_SEC(electro, bouncestop);
                break;
            case PROJECTILE_RPC:
            case PROJECTILE_ROCKET:
                loopsound(this, CH_SHOTS_SINGLE, SND_ROCKET_FLY, VOL_BASE, ATTEN_NORM);
                this.mins = '-3 -3 -3';
                this.maxs = '3 3 3';
                break;
            case PROJECTILE_GRENADE:
                this.mins = '-3 -3 -3';
                this.maxs = '3 3 3';
                break;
            case PROJECTILE_GRENADE_BOUNCING:
                this.mins = '-3 -3 -3';
                this.maxs = '3 3 3';
                set_movetype(this, MOVETYPE_BOUNCE);
                settouch(this, func_null);
                this.bouncefactor = WEP_CVAR(mortar, bouncefactor);
                this.bouncestop = WEP_CVAR(mortar, bouncestop);
                break;
            case PROJECTILE_SHAMBLER_LIGHTNING:
                this.mins = '-8 -8 -8';
                this.maxs = '8 8 8';
                this.scale = 2.5;
                this.avelocity = randomvec() * 720;
                break;
            case PROJECTILE_MINE:
                this.mins = '-4 -4 -4';
                this.maxs = '4 4 4';
                break;
            case PROJECTILE_PORTO_RED:
                this.colormod = '2 1 1';
                this.alphamod = 0.5;
                set_movetype(this, MOVETYPE_BOUNCE);
                settouch(this, func_null);
                break;
            case PROJECTILE_PORTO_BLUE:
                this.colormod = '1 1 2';
                this.alphamod = 0.5;
                set_movetype(this, MOVETYPE_BOUNCE);
                settouch(this, func_null);
                break;
            case PROJECTILE_HAGAR_BOUNCING:
                set_movetype(this, MOVETYPE_BOUNCE);
                settouch(this, func_null);
                break;
            case PROJECTILE_CRYLINK_BOUNCING:
                set_movetype(this, MOVETYPE_BOUNCE);
                settouch(this, func_null);
                break;
            case PROJECTILE_FIREBALL:
                loopsound(this, CH_SHOTS_SINGLE, SND_FIREBALL_FLY2, VOL_BASE, ATTEN_NORM);
                this.mins = '-16 -16 -16';
                this.maxs = '16 16 16';
                break;
            case PROJECTILE_FIREMINE:
                loopsound(this, CH_SHOTS_SINGLE, SND_FIREBALL_FLY, VOL_BASE, ATTEN_NORM);
                set_movetype(this, MOVETYPE_BOUNCE);
                settouch(this, func_null);
                this.mins = '-4 -4 -4';
                this.maxs = '4 4 4';
                break;
            case PROJECTILE_TAG:
                this.mins = '-2 -2 -2';
                this.maxs = '2 2 2';
                break;
            case PROJECTILE_FLAC:
                this.mins = '-2 -2 -2';
                this.maxs = '2 2 2';
                break;
            case PROJECTILE_SEEKER:
                loopsound(this, CH_SHOTS_SINGLE, SND_TAG_ROCKET_FLY, VOL_BASE, ATTEN_NORM);
                this.mins = '-4 -4 -4';
                this.maxs = '4 4 4';
                break;
            case PROJECTILE_ARC_BOLT:
                set_movetype(this, MOVETYPE_BOUNCE);
                settouch(this, func_null);
                break;
            case PROJECTILE_RAPTORBOMB:
                this.mins = '-3 -3 -3';
                this.maxs = '3 3 3';
                break;
            case PROJECTILE_RAPTORBOMBLET:
                break;
            case PROJECTILE_RAPTORCANNON:
                break;
            case PROJECTILE_SPIDERROCKET:
                loopsound(this, CH_SHOTS_SINGLE, SND_TAG_ROCKET_FLY, VOL_BASE, ATTEN_NORM);
                break;
            case PROJECTILE_WAKIROCKET:
                loopsound(this, CH_SHOTS_SINGLE, SND_TAG_ROCKET_FLY, VOL_BASE, ATTEN_NORM);
                break;
            /*
            case PROJECTILE_WAKICANNON:
                break;
            case PROJECTILE_BUMBLE_GUN:
                // only new engines support sound moving with object
                loopsound(this, CH_SHOTS_SINGLE, SND_ELECTRO_FLY, VOL_BASE, ATTEN_NORM);
                this.mins = '0 0 -4';
                this.maxs = '0 0 -4';
                this.move_movetype = MOVETYPE_BOUNCE;
                settouch(this, func_null);
                this.bouncefactor = WEP_CVAR_SEC(electro, bouncefactor);
                this.bouncestop = WEP_CVAR_SEC(electro, bouncestop);
                break;
            */
            default:
                break;
        }

        MUTATOR_CALLHOOK(EditProjectile, this);

        setsize(this, this.mins, this.maxs);
    }

    return = true;

    if (this.gravity)
    {
        if (this.move_movetype == MOVETYPE_FLY)
            set_movetype(this, MOVETYPE_TOSS);
        if (this.move_movetype == MOVETYPE_BOUNCEMISSILE)
            set_movetype(this, MOVETYPE_BOUNCE);
    }
    else
    {
        if (this.move_movetype == MOVETYPE_TOSS)
            set_movetype(this, MOVETYPE_FLY);
        if (this.move_movetype == MOVETYPE_BOUNCE)
            set_movetype(this, MOVETYPE_BOUNCEMISSILE);
    }

    if (!(this.count & 0x80))
        InterpolateOrigin_Note(this);

    this.draw = Projectile_Draw;
    if (isnew) IL_PUSH(g_drawables, this);
    this.entremove = Ent_RemoveProjectile;
}

PRECACHE(Projectiles)
{
    MUTATOR_CALLHOOK(PrecacheProjectiles);
}