view.qc

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#include "view.qh"

#include <client/announcer.qh>
#include <client/csqcmodel_hooks.qh>
#include <client/draw.qh>
#include <client/hud/_mod.qh>
#include <client/hud/panel/quickmenu.qh>
#include <client/hud/panel/scoreboard.qh>
#include <client/mapvoting.qh>
#include <client/mutators/_mod.qh>
#include <client/shownames.qh>
#include <common/anim.qh>
#include <common/animdecide.qh>
#include <common/constants.qh>
#include <common/deathtypes/all.qh>
#include <common/debug.qh>
#include <common/ent_cs.qh>
#include <common/gamemodes/_mod.qh>
#include <common/mapinfo.qh>
#include <common/mapobjects/target/music.qh>
#include <common/mapobjects/trigger/viewloc.qh>
#include <common/minigames/cl_minigames.qh>
#include <common/minigames/cl_minigames_hud.qh>
#include <common/mutators/mutator/powerups/_mod.qh>
#include <common/mutators/mutator/status_effects/_mod.qh>
#include <common/mutators/mutator/waypoints/all.qh>
#include <common/net_linked.qh>
#include <common/net_notice.qh>
#include <common/physics/player.qh>
#include <common/stats.qh>
#include <common/teams.qh>
#include <common/vehicles/all.qh>
#include <common/viewloc.qh>
#include <common/weapons/_all.qh>
#include <common/weapons/weapon/tuba.qh>
#include <common/wepent.qh>
#include <lib/csqcmodel/cl_model.qh>
#include <lib/csqcmodel/cl_player.qh>
#include <lib/warpzone/client.qh>
#include <lib/warpzone/common.qh>

float autocvar_cl_viewmodel_scale;
float autocvar_cl_viewmodel_alpha = 1;

bool autocvar_cl_bobmodel;
float autocvar_cl_bobmodel_speed;
float autocvar_cl_bobmodel_side;
float autocvar_cl_bobmodel_up;

float autocvar_cl_followmodel;
float autocvar_cl_followmodel_speed = 0.3;
float autocvar_cl_followmodel_limit = 135;
float autocvar_cl_followmodel_velocity_lowpass = 0.05;
float autocvar_cl_followmodel_highpass = 0.05;
float autocvar_cl_followmodel_lowpass = 0.03;
bool autocvar_cl_followmodel_velocity_absolute;

float autocvar_cl_leanmodel;
float autocvar_cl_leanmodel_speed = 0.3;
float autocvar_cl_leanmodel_limit = 30;
float autocvar_cl_leanmodel_highpass1 = 0.2;
float autocvar_cl_leanmodel_highpass = 0.2;
float autocvar_cl_leanmodel_lowpass = 0.05;

#define avg_factor(avg_time) (1 - exp(-frametime / max(0.001, avg_time)))

#define lowpass(value, frac, ref_store, ret) \
    ret = ref_store = ref_store * (1 - frac) + (value) * frac;

#define lowpass_limited(value, frac, limit, ref_store, ret) MACRO_BEGIN \
    float __ignore; lowpass(value, frac, ref_store, __ignore); \
    ret = ref_store = bound((value) - (limit), ref_store, (value) + (limit)); \
MACRO_END

#define highpass(value, frac, ref_store, ret) MACRO_BEGIN \
    float __f = 0; lowpass(value, frac, ref_store, __f); \
    ret = (value) - __f; \
MACRO_END

#define highpass_limited(value, frac, limit, ref_store, ret) MACRO_BEGIN \
    float __f = 0; lowpass_limited(value, frac, limit, ref_store, __f); \
    ret = (value) - __f; \
MACRO_END

#define lowpass2(value, frac, ref_store, ref_out) MACRO_BEGIN \
    lowpass(value.x, frac, ref_store.x, ref_out.x); \
    lowpass(value.y, frac, ref_store.y, ref_out.y); \
MACRO_END

#define highpass2(value, frac, ref_store, ref_out) MACRO_BEGIN \
    highpass(value.x, frac, ref_store.x, ref_out.x); \
    highpass(value.y, frac, ref_store.y, ref_out.y); \
MACRO_END

#define highpass2_limited(value, frac, limit, ref_store, ref_out) MACRO_BEGIN \
    highpass_limited(value.x, frac, limit, ref_store.x, ref_out.x); \
    highpass_limited(value.y, frac, limit, ref_store.y, ref_out.y); \
MACRO_END

#define lowpass3(value, frac, ref_store, ref_out) MACRO_BEGIN \
    lowpass(value.x, frac, ref_store.x, ref_out.x); \
    lowpass(value.y, frac, ref_store.y, ref_out.y); \
    lowpass(value.z, frac, ref_store.z, ref_out.z); \
MACRO_END

#define highpass3(value, frac, ref_store, ref_out) MACRO_BEGIN \
    highpass(value.x, frac, ref_store.x, ref_out.x); \
    highpass(value.y, frac, ref_store.y, ref_out.y); \
    highpass(value.z, frac, ref_store.z, ref_out.z); \
MACRO_END

void calc_followmodel_ofs(entity view)
{
    if(cl_followmodel_time == time)
        return; // cl_followmodel_ofs already calculated for this frame

    float frac;
    vector gunorg = '0 0 0';
    static vector vel_average;
    static vector gunorg_adjustment_highpass;
    static vector gunorg_adjustment_lowpass;

    vector vel;
    if (autocvar_cl_followmodel_velocity_absolute)
        vel = view.velocity;
    else
    {
        vector forward, right, up;
        MAKE_VECTORS(view_angles, forward, right, up);
        vel.x = view.velocity * forward;
        vel.y = view.velocity * right * -1;
        vel.z = view.velocity * up;
    }

    vel.x = bound(vel_average.x - autocvar_cl_followmodel_limit, vel.x, vel_average.x + autocvar_cl_followmodel_limit);
    vel.y = bound(vel_average.y - autocvar_cl_followmodel_limit, vel.y, vel_average.y + autocvar_cl_followmodel_limit);
    vel.z = bound(vel_average.z - autocvar_cl_followmodel_limit, vel.z, vel_average.z + autocvar_cl_followmodel_limit);

    frac = avg_factor(autocvar_cl_followmodel_velocity_lowpass);
    lowpass3(vel, frac, vel_average, gunorg);

    gunorg *= -autocvar_cl_followmodel_speed * 0.042;

    // perform highpass/lowpass on the adjustment vectors (turning velocity into acceleration!)
    // trick: we must do the lowpass LAST, so the lowpass vector IS the final vector!
    frac = avg_factor(autocvar_cl_followmodel_highpass);
    highpass3(gunorg, frac, gunorg_adjustment_highpass, gunorg);
    frac = avg_factor(autocvar_cl_followmodel_lowpass);
    lowpass3(gunorg, frac, gunorg_adjustment_lowpass, gunorg);

    if (autocvar_cl_followmodel_velocity_absolute)
    {
        vector fixed_gunorg;
        vector forward, right, up;
        MAKE_VECTORS(view_angles, forward, right, up);
        fixed_gunorg.x = gunorg * forward;
        fixed_gunorg.y = gunorg * right * -1;
        fixed_gunorg.z = gunorg * up;
        gunorg = fixed_gunorg;
    }

    cl_followmodel_ofs = gunorg;
    cl_followmodel_time = time;
}

vector leanmodel_ofs(entity view)
{
    float frac;
    vector gunangles = '0 0 0';
    static vector gunangles_prev = '0 0 0';
    static vector gunangles_highpass = '0 0 0';
    static vector gunangles_adjustment_highpass;
    static vector gunangles_adjustment_lowpass;

    if (view.csqcmodel_teleported)
        gunangles_prev = view_angles;

    // in the highpass, we _store_ the DIFFERENCE to the actual view angles...
    gunangles_highpass += gunangles_prev;
    PITCH(gunangles_highpass) += 360 * floor((PITCH(view_angles) - PITCH(gunangles_highpass)) / 360 + 0.5);
    YAW(gunangles_highpass) += 360 * floor((YAW(view_angles) - YAW(gunangles_highpass)) / 360 + 0.5);
    ROLL(gunangles_highpass) += 360 * floor((ROLL(view_angles) - ROLL(gunangles_highpass)) / 360 + 0.5);
    frac = avg_factor(autocvar_cl_leanmodel_highpass1);
    highpass2_limited(view_angles, frac, autocvar_cl_leanmodel_limit, gunangles_highpass, gunangles);
    gunangles_prev = view_angles;
    gunangles_highpass -= gunangles_prev;

    PITCH(gunangles) *= -autocvar_cl_leanmodel_speed;
    YAW(gunangles) *= -autocvar_cl_leanmodel_speed;

    // we assume here: PITCH = 0, YAW = 1, ROLL = 2
    frac = avg_factor(autocvar_cl_leanmodel_highpass);
    highpass2(gunangles, frac, gunangles_adjustment_highpass, gunangles);
    frac = avg_factor(autocvar_cl_leanmodel_lowpass);
    lowpass2(gunangles, frac, gunangles_adjustment_lowpass, gunangles);

    gunangles.x = -gunangles.x; // pitch was inverted, now that actually matters

    return gunangles;
}

vector bobmodel_ofs(entity view)
{
    bool clonground = !(view.anim_implicit_state & ANIMIMPLICITSTATE_INAIR);
    static bool oldonground;
    static float hitgroundtime;
    if (clonground)
    {
        float f = time; // cl.movecmd[0].time
        if (!oldonground)
            hitgroundtime = f;
    }
    oldonground = clonground;

    // calculate for swinging gun model
    // the gun bobs when running on the ground, but doesn't bob when you're in the air.
    vector gunorg = '0 0 0';
    static float bobmodel_scale = 0;
    static float time_ofs = 0; // makes the effect always restart in the same way
    if (clonground)
    {
        if (time - hitgroundtime > 0.05)
            bobmodel_scale = min(1, bobmodel_scale + frametime * 5);
    }
    else
        bobmodel_scale = max(0, bobmodel_scale - frametime * 5);

    float xyspeed = bound(0, vlen(vec2(view.velocity)), 400);
    if (bobmodel_scale && xyspeed)
    {
        float bspeed = xyspeed * 0.01 * autocvar_cl_viewmodel_scale * bobmodel_scale;
        float s = (time - time_ofs) * autocvar_cl_bobmodel_speed;
        gunorg.y = bspeed * autocvar_cl_bobmodel_side * sin(s);
        gunorg.z = bspeed * autocvar_cl_bobmodel_up * cos(s * 2);
    }
    else
        time_ofs = time;

    return gunorg;
}

void viewmodel_animate(entity this)
{
    if (autocvar_chase_active || STAT(HEALTH) <= 0) return;

    entity view = CSQCModel_server2csqc(player_localentnum - 1);

    if (autocvar_cl_followmodel)
    {
        calc_followmodel_ofs(view);
        this.origin += cl_followmodel_ofs;
    }

    if (autocvar_cl_leanmodel)
        this.angles += leanmodel_ofs(view);

    // vertical view bobbing code
    // TODO: cl_bob

    // horizontal view bobbing code
    // TODO: cl_bob2

    // fall bobbing code
    // causes the view to swing down and back up when touching the ground
    // TODO: cl_bobfall

    // gun model bobbing code
    if (autocvar_cl_bobmodel)
        this.origin += bobmodel_ofs(view);
}

.vector viewmodel_origin, viewmodel_angles;
.float weapon_nextthink;
.float weapon_eta_last;
.float weapon_switchdelay;

.string name_last;

void viewmodel_draw(entity this)
{
    if(!this.activeweapon || !autocvar_r_drawviewmodel)
        return;
    int mask = (intermission || (STAT(HEALTH) <= 0) || autocvar_chase_active) ? 0 : MASK_NORMAL;
    float a = ((autocvar_cl_viewmodel_alpha) ? bound(-1, autocvar_cl_viewmodel_alpha, this.m_alpha) : this.m_alpha);
    int wepskin = this.m_skin;
    bool invehicle = player_localentnum > maxclients;
    if (invehicle) a = -1;
    Weapon wep = this.activeweapon;
    int c = entcs_GetClientColors(current_player);
    vector g = weaponentity_glowmod(wep, NULL, c, this);
    entity me = CSQCModel_server2csqc(player_localentnum - 1);
    int fx = ((me.csqcmodel_effects & EFMASK_CHEAP)
        | EF_NODEPTHTEST)
        &~ (EF_FULLBRIGHT); // can mask team color, so get rid of it
    for (entity e = this; e; e = e.weaponchild)
    {
        e.drawmask = mask;
        e.alpha = a;
        e.skin = wepskin;
        e.colormap = 256 + c;  // colormap == 0 is black, c == 0 is white
        e.glowmod = g;
        e.csqcmodel_effects = fx;
        CSQCModel_Effects_Apply(e);
    }
    if(a >= 0)
    {
        string name = wep.mdl;
        string newname = wep.wr_viewmodel(wep, this);
        if(newname)
            name = newname;
        bool swap = name != this.name_last;
        // if (swap)
        {
            this.name_last = name;
            CL_WeaponEntity_SetModel(this, name, swap);
            this.viewmodel_origin = this.origin;
            this.viewmodel_angles = this.angles;
        }
        anim_update(this);
        if ((!this.animstate_override && !this.animstate_looping) || time > this.animstate_endtime)
            anim_set(this, this.anim_idle, true, false, false);
    }
    float f = 0; // 0..1; 0: fully active
    float rate = STAT(WEAPONRATEFACTOR);
    float eta = rate ? ((this.weapon_nextthink - time) / rate) : 0;
    if (eta <= 0) f = this.weapon_eta_last;
    else switch (this.state)
    {
        case WS_RAISE:
        {
            f = eta / max(eta, this.weapon_switchdelay);
            break;
        }
        case WS_DROP:
        {
            f = 1 - eta / max(eta, this.weapon_switchdelay);
            break;
        }
        case WS_CLEAR:
        {
            f = 1;
            break;
        }
    }
    this.weapon_eta_last = f;
    this.origin = this.viewmodel_origin;
    this.angles = this.viewmodel_angles;
    this.angles_x = (-90 * f * f);
    viewmodel_animate(this);
    MUTATOR_CALLHOOK(DrawViewModel, this);
    setorigin(this, this.origin);
}

STATIC_INIT(viewmodel) {
    for(int slot = 0; slot < MAX_WEAPONSLOTS; ++slot)
        viewmodels[slot] = new(viewmodel);
}

vector project_3d_to_2d(vector vec)
{
    vec = cs_project(vec);
    if(cs_project_is_b0rked > 0)
    {
        vec.x *= vid_conwidth / vid_width;
        vec.y *= vid_conheight / vid_height;
    }
    return vec;
}

bool projected_on_screen(vector screen_pos)
{
    return screen_pos.z >= 0
        && screen_pos.x >= 0
        && screen_pos.y >= 0
        && screen_pos.x < vid_conwidth
        && screen_pos.y < vid_conheight;
}

void update_mousepos()
{
    mousepos += getmousepos() * autocvar_menu_mouse_speed;
    mousepos.x = bound(0, mousepos.x, vid_conwidth);
    mousepos.y = bound(0, mousepos.y, vid_conheight);
}

float showfps_prevfps_time;
int showfps_framecounter;

void fpscounter_update()
{
    if(!STAT(SHOWFPS))
        return;

    float currentTime = gettime(GETTIME_FRAMESTART);

    showfps_framecounter += 1;
    if(currentTime - showfps_prevfps_time > STAT(SHOWFPS))
    {
        float fps = showfps_framecounter / (currentTime - showfps_prevfps_time);
        showfps_framecounter = 0;
        showfps_prevfps_time = currentTime;

        int channel = MSG_C2S;
        WriteHeader(channel, fpsreport);
        WriteShort(channel, bound(0, rint(fps), 32767)); // prevent insane fps values
    }
}

STATIC_INIT(fpscounter_init)
{
    float currentTime = gettime(GETTIME_FRAMESTART);
    showfps_prevfps_time = currentTime; // we must initialize it to avoid an instant low frame sending
}

float avgspeed;
vector GetCurrentFov(float fov)
{
    float zoomsensitivity, zoomspeed, zoomfactor, zoomdir;
    float velocityzoom, curspeed;
    vector v;

    zoomsensitivity = autocvar_cl_zoomsensitivity;
    zoomfactor = autocvar_cl_zoomfactor;
    if(zoomfactor < 1 || zoomfactor > 30)
        zoomfactor = 2.5;
    zoomspeed = autocvar_cl_zoomspeed;
    if (zoomspeed >= 0 && (zoomspeed < 0.5 || zoomspeed > 16))
        zoomspeed = 3.5;

    zoomdir = button_zoom;

    if(hud == HUD_NORMAL && !spectatee_status)
    {
        for(int slot = 0; slot < MAX_WEAPONSLOTS; ++slot)
        {
            entity wepent = viewmodels[slot];
            if(wepent.switchweapon != wepent.activeweapon)
                continue;
            Weapon wep = wepent.activeweapon;
            if(wep != WEP_Null && wep.wr_zoomdir)
            {
                bool do_zoom = wep.wr_zoomdir(wep); // TODO: merge this with wr_zoom?
                zoomdir += do_zoom;
            }
        }
    }
    if(spectatee_status > 0 || isdemo())
    {
        if(spectatorbutton_zoom)
        {
            if(zoomdir)
                zoomdir = 0;
            else
                zoomdir = 1;
        }
        // fteqcc failed twice here already, don't optimize this
    }

    if(zoomdir) { zoomin_effect = 0; }

    if (spectatee_status > 0 && STAT(CAMERA_SPECTATOR) == 2)
    {
        current_viewzoom = 1;
    }
    else if (camera_active)
    {
        current_viewzoom = min(1, current_viewzoom + drawframetime);
    }
    else if(autocvar_cl_spawnzoom && zoomin_effect)
    {
        float spawnzoomfactor = bound(1, autocvar_cl_spawnzoom_factor, 30);

        current_viewzoom += (autocvar_cl_spawnzoom_speed * (spawnzoomfactor - current_viewzoom) * drawframetime);
        current_viewzoom = bound(1 / spawnzoomfactor, current_viewzoom, 1);
        if(current_viewzoom == 1) { zoomin_effect = 0; }
    }
    else
    {
        if(zoomspeed < 0) // instant zoom
        {
            if(zoomdir)
                current_viewzoom = 1 / zoomfactor;
            else
                current_viewzoom = 1;
        }
        else
        {
            if(zoomdir)
                current_viewzoom = 1 / bound(1, 1 / current_viewzoom + drawframetime * zoomspeed * (zoomfactor - 1), zoomfactor);
            else
                current_viewzoom = bound(1 / zoomfactor, current_viewzoom + drawframetime * zoomspeed * (1 - 1 / zoomfactor), 1);
        }
    }

    if(almost_equals(current_viewzoom, 1))
        current_zoomfraction = 0;
    else if(almost_equals(current_viewzoom, 1/zoomfactor))
        current_zoomfraction = 1;
    else
        current_zoomfraction = (current_viewzoom - 1) / (1/zoomfactor - 1);

    if(zoomsensitivity < 1)
        setsensitivityscale(current_viewzoom ** (1 - zoomsensitivity));
    else
        setsensitivityscale(1);

    if(autocvar_cl_velocityzoom_enabled && autocvar_cl_velocityzoom_type && !autocvar_cl_lockview) // _type = 0 disables velocity zoom too
    {
        if (intermission || (spectatee_status > 0 && STAT(CAMERA_SPECTATOR) == 2))
            curspeed = 0;
        else
        {
            vector forward, right, up;
            MAKE_VECTORS(view_angles, forward, right, up);
            v = pmove_vel;
            if(csqcplayer)
                v = csqcplayer.velocity;

            switch(autocvar_cl_velocityzoom_type)
            {
                case 3: curspeed = max(0, forward * v); break;
                case 2: curspeed = (forward * v); break;
                case 1: default: curspeed = vlen(v); break;
            }
        }

        velocityzoom = bound(0, drawframetime / max(0.000000001, autocvar_cl_velocityzoom_time), 1); // speed at which the zoom adapts to player velocity
        avgspeed = avgspeed * (1 - velocityzoom) + (curspeed / autocvar_cl_velocityzoom_speed) * velocityzoom;
        velocityzoom = exp(float2range11(avgspeed * -autocvar_cl_velocityzoom_factor / 1) * 1);

        //print(ftos(avgspeed), " avgspeed, ", ftos(curspeed), " curspeed, ", ftos(velocityzoom), " return\n"); // for debugging
    }
    else
        velocityzoom = 1;

    float frustumx, frustumy, fovx, fovy;
    frustumy = tan(fov * M_PI / 360.0) * 0.75 * current_viewzoom * velocityzoom;
    frustumx = frustumy * vid_width / vid_height / vid_pixelheight;
    fovx = atan2(frustumx, 1) / M_PI * 360.0;
    fovy = atan2(frustumy, 1) / M_PI * 360.0;

    return '1 0 0' * fovx + '0 1 0' * fovy;
}

vector GetViewLocationFOV(float fov)
{
    float frustumy = tan(fov * M_PI / 360.0) * 0.75;
    float frustumx = frustumy * vid_width / vid_height / vid_pixelheight;
    float fovx = atan2(frustumx, 1) / M_PI * 360.0;
    float fovy = atan2(frustumy, 1) / M_PI * 360.0;
    return '1 0 0' * fovx + '0 1 0' * fovy;
}

vector GetOrthoviewFOV(vector ov_worldmin, vector ov_worldmax, vector ov_mid, vector ov_org)
{
    float fovx, fovy;
    float width = (ov_worldmax.x - ov_worldmin.x);
    float height = (ov_worldmax.y - ov_worldmin.y);
    float distance_to_middle_of_world = vlen(ov_mid - ov_org);
    fovx = atan2(width/2, distance_to_middle_of_world) / M_PI * 360.0;
    fovy = atan2(height/2, distance_to_middle_of_world) / M_PI * 360.0;
    return '1 0 0' * fovx + '0 1 0' * fovy;
}

// this function must match W_SetupShot!

bool minigame_wasactive;

float camera_mode;
const float CAMERA_FREE = 1;
const float CAMERA_CHASE = 2;
string NextFrameCommand;

vector freeze_org, freeze_ang;
entity nightvision_noise, nightvision_noise2;

float myhealth, myhealth_prev;
float myhealth_flash;

float old_blurradius, old_bluralpha;
float old_sharpen_intensity;

vector myhealth_gentlergb;

float contentavgalpha, liquidalpha_prev;
vector liquidcolor_prev;

float eventchase_current_distance;
float eventchase_running;
int WantEventchase(entity this, bool want_vehiclechase)
{
    if(autocvar_cl_orthoview)
        return 0;
    if(STAT(GAME_STOPPED) || intermission)
        return 1;
    if(this.viewloc)
        return 1;
    if(spectatee_status >= 0)
    {
        if(want_vehiclechase)
            return 1;
        if(MUTATOR_CALLHOOK(WantEventchase, this))
            return 1;
        if(autocvar_cl_eventchase_frozen && STAT(FROZEN))
            return 1;
        if(autocvar_cl_eventchase_death && (STAT(HEALTH) <= 0))
        {
            if(autocvar_cl_eventchase_death == 2)
            {
                // don't stop eventchase once it's started (even if velocity changes afterwards)
                if(this.velocity == '0 0 0' || eventchase_running)
                    return 1;
            }
            else return 1;
        }
        if (spectatee_status > 0 && autocvar_cl_eventchase_spectated_change)
        {
            if (time <= spectatee_status_changed_time + min(3, autocvar_cl_eventchase_spectated_change_time))
                return 1;
            else if (eventchase_running)
                return -1; // disable chase_active while eventchase is still enabled so to avoid a glicth
        }
    }
    return 0;
}

void View_EventChase(entity this)
{
    // event chase camera
    if(autocvar_chase_active <= 0) // greater than 0 means it's enabled manually, and this code is skipped
    {
        if(STAT(CAMERA_SPECTATOR))
        {
            if(spectatee_status > 0)
            {
                if(!autocvar_chase_active)
                {
                    cvar_set("chase_active", "-2");
                    return;
                }
            }
            else if(autocvar_chase_active == -2)
                cvar_set("chase_active", "0");

            if(autocvar_chase_active == -2)
                return;
        }
        else if(autocvar_chase_active == -2)
            cvar_set("chase_active", "0");

        bool vehicle_chase = (hud != HUD_NORMAL && (autocvar_cl_eventchase_vehicle || spectatee_status > 0));

        float vehicle_viewdist = 0;
        vector vehicle_viewofs = '0 0 0';

        if(vehicle_chase)
        {
            if(hud != HUD_BUMBLEBEE_GUN)
            {
                Vehicle info = REGISTRY_GET(Vehicles, hud);
                vehicle_viewdist = info.height;
                vehicle_viewofs = info.view_ofs;
                if(vehicle_viewdist < 0) // when set below 0, this vehicle doesn't use third person view (gunner slots)
                    vehicle_chase = false;
            }
            else
                vehicle_chase = false;
        }

        int eventchase = WantEventchase(this, vehicle_chase);
        if (eventchase)
        {
            vector current_view_origin_override = '0 0 0';
            vector view_offset_override = '0 0 0';
            float chase_distance_override = 0;
            bool custom_eventchase = MUTATOR_CALLHOOK(CustomizeEventchase, this);
            if(custom_eventchase)
            {
                current_view_origin_override = M_ARGV(0, vector);
                view_offset_override = M_ARGV(1, vector);
                chase_distance_override = M_ARGV(0, float);
            }
            eventchase_running = true;

            // make special vector since we can't use view_origin (It is one frame old as of this code, it gets set later with the results this code makes.)
            vector current_view_origin = (csqcplayer ? csqcplayer.origin : pmove_org);
            if (custom_eventchase)
                current_view_origin = current_view_origin_override;

            // detect maximum viewoffset and use it
            vector view_offset = autocvar_cl_eventchase_viewoffset;
            if(vehicle_chase)
            {
                if(vehicle_viewofs)
                    view_offset = vehicle_viewofs;
                else
                    view_offset = autocvar_cl_eventchase_vehicle_viewoffset;
            }
            if (custom_eventchase)
                view_offset = view_offset_override;

            if(view_offset)
            {
                WarpZone_TraceLine(current_view_origin, current_view_origin + view_offset + ('0 0 1' * autocvar_cl_eventchase_maxs.z), MOVE_WORLDONLY, this);
                if(trace_fraction == 1) { current_view_origin += view_offset; }
                else { current_view_origin.z += max(0, (trace_endpos.z - current_view_origin.z) - autocvar_cl_eventchase_maxs.z); }
            }

            // We must enable chase_active to get a third person view (weapon viewmodel hidden and own player model showing).
            // Ideally, there should be another way to enable third person cameras, such as through setproperty()
            // -1 enables chase_active while marking it as set by this code, and not by the user (which would be 1)
            if(!autocvar_chase_active) { cvar_set("chase_active", "-1"); }

            // make the camera smooth back
            float chase_distance = autocvar_cl_eventchase_distance;
            if(vehicle_chase)
            {
                if(vehicle_viewofs)
                    chase_distance = vehicle_viewdist;
                else
                    chase_distance = autocvar_cl_eventchase_vehicle_distance;
            }
            if (custom_eventchase)
                chase_distance = chase_distance_override;

            if(autocvar_cl_eventchase_speed && eventchase_current_distance < chase_distance)
                eventchase_current_distance += autocvar_cl_eventchase_speed * (chase_distance - eventchase_current_distance) * frametime; // slow down the further we get
            else if(eventchase_current_distance != chase_distance)
                eventchase_current_distance = chase_distance;

            vector forward, right, up;
            MAKE_VECTORS(view_angles, forward, right, up);

            vector eventchase_target_origin = (current_view_origin - (forward * eventchase_current_distance));
            WarpZone_TraceBox(current_view_origin, autocvar_cl_eventchase_mins, autocvar_cl_eventchase_maxs, eventchase_target_origin, MOVE_WORLDONLY, this);

            // If the boxtrace fails, revert back to line tracing.
            if(!this.viewloc)
            if(trace_startsolid)
            {
                eventchase_target_origin = (current_view_origin - (forward * eventchase_current_distance));
                WarpZone_TraceLine(current_view_origin, eventchase_target_origin, MOVE_WORLDONLY, this);
                setproperty(VF_ORIGIN, (trace_endpos - (forward * autocvar_cl_eventchase_mins.z)));
            }
            else { setproperty(VF_ORIGIN, trace_endpos); }

            if(!this.viewloc)
                setproperty(VF_ANGLES, WarpZone_TransformVAngles(WarpZone_trace_transform, view_angles));
        }

        if (eventchase <= 0 && autocvar_chase_active < 0) // time to disable chase_active if it was set by this code
        {
            eventchase_running = false;
            cvar_set("chase_active", "0");
            eventchase_current_distance = 0; // start from 0 next time
        }
    }
    // workaround for camera stuck between player's legs when using chase_active 1
    // because the engine stops updating the chase_active camera when the game ends
    else if(intermission)
    {
        cvar_settemp("chase_active", "-1");
        eventchase_current_distance = 0;
    }
}

vector damage_blurpostprocess, content_blurpostprocess;

void UpdateDamage()
{
    // accumulate damage with each stat update
    static float damage_total_prev = 0;
    float damage_total = STAT(HITSOUND_DAMAGE_DEALT_TOTAL);
    float unaccounted_damage_new = COMPARE_INCREASING(damage_total, damage_total_prev);
    damage_total_prev = damage_total;

    static float damage_dealt_time_prev = 0;
    float damage_dealt_time = STAT(HIT_TIME);
    if (damage_dealt_time != damage_dealt_time_prev)
    {
        unaccounted_damage += unaccounted_damage_new;
        //LOG_TRACE("dmg total: ", ftos(unaccounted_damage), " (+", ftos(unaccounted_damage_new), ")");
    }
    damage_dealt_time_prev = damage_dealt_time;

    // prevent hitsound when switching spectatee
    static float spectatee_status_prev = 0;
    if (spectatee_status != spectatee_status_prev)
        unaccounted_damage = 0;
    spectatee_status_prev = spectatee_status;
}

void HitSound()
{
    // varying sound pitch

    bool have_arc = false;
    for(int slot = 0; slot < MAX_WEAPONSLOTS; ++slot)
    {
        entity wepent = viewmodels[slot];

        if(wepent.activeweapon == WEP_ARC)
            have_arc = true;
    }

    static float hitsound_time_prev = 0;
    // HACK: the only way to get the arc to sound consistent with pitch shift is to ignore cl_hitsound_antispam_time
    bool arc_hack = have_arc && autocvar_cl_hitsound >= 2;
    if (arc_hack || COMPARE_INCREASING(time, hitsound_time_prev) > autocvar_cl_hitsound_antispam_time)
    {
        if (autocvar_cl_hitsound && unaccounted_damage)
        {
            float pitch_shift = 1;
            if (autocvar_cl_hitsound == 2 || autocvar_cl_hitsound == 3)
            {
                // customizable gradient function that crosses (0,a), (c,1) and asymptotically approaches b
                float a = autocvar_cl_hitsound_max_pitch;
                float b = autocvar_cl_hitsound_min_pitch;
                float c = autocvar_cl_hitsound_nom_damage;
                float d = unaccounted_damage;
                pitch_shift = (b*d*(a-1) + a*c*(1-b)) / (d*(a-1) + c*(1-b));

                // if pitch shift is reversed, mirror in (max-min)/2 + min
                if (autocvar_cl_hitsound == 3)
                {
                    float mirror_value = (a-b)/2 + b;
                    pitch_shift = mirror_value + (mirror_value - pitch_shift);
                }
            }

            //LOG_TRACE("dmg total (dmg): ", ftos(unaccounted_damage), " , pitch shift: ", ftos(pitch_shift));

            // todo: avoid very long and very short sounds from wave stretching using different sound files? seems unnecessary
            // todo: normalize sound pressure levels? seems unnecessary

            sound7(NULL, CH_INFO, SND(HIT), VOL_BASE, ATTN_NONE, pitch_shift * 100, 0);
        }
        unaccounted_damage = 0;
        hitsound_time_prev = time;
    }

    static float typehit_time_prev = 0;
    float typehit_time = STAT(TYPEHIT_TIME);
    if (COMPARE_INCREASING(typehit_time, typehit_time_prev) > autocvar_cl_hitsound_antispam_time)
    {
        sound(NULL, CH_INFO, SND_TYPEHIT, VOL_BASE, ATTN_NONE);
        typehit_time_prev = typehit_time;
    }

    static float kill_time_prev = 0;
    float kill_time = STAT(KILL_TIME);
    if (COMPARE_INCREASING(kill_time, kill_time_prev) > autocvar_cl_hitsound_antispam_time)
    {
        sound(NULL, CH_INFO, SND_KILL, VOL_BASE, ATTN_NONE);
        kill_time_prev = kill_time;
    }
}

void HUD_Draw(entity this)
{
    // if we don't know gametype and scores yet avoid drawing the scoreboard
    // also in the very first frames, player state may be inconsistent so avoid drawing the hud at all
    // e.g. since initial player's health is 0 hud would display the hud_damage effect,
    // cl_deathscoreboard would show the scoreboard and so on
    if(!gametype)
        return;

    Hud_Dynamic_Frame();

    if(!intermission)
    if (MUTATOR_CALLHOOK(HUD_Draw_overlay))
    {
        drawfill('0 0 0', vec2(vid_conwidth, vid_conheight), M_ARGV(0, vector), autocvar_hud_colorflash_alpha * M_ARGV(1, float), DRAWFLAG_ADDITIVE);
    }
    else if(STAT(FROZEN))
    {
        vector col = '0.25 0.90 1';
        float col_fade = max(0, STAT(REVIVE_PROGRESS) * 2 - 1);
        float alpha_fade = 0.3 + 0.7 * (1 - max(0, STAT(REVIVE_PROGRESS) * 4 - 3));
        if(col_fade)
            col += vec3(col_fade, -col_fade, -col_fade);
        drawfill('0 0 0', vec2(vid_conwidth, vid_conheight), col, autocvar_hud_colorflash_alpha * alpha_fade, DRAWFLAG_ADDITIVE);
    }

    HUD_Scale_Enable();
    if(!intermission)
    if(STAT(NADE_TIMER) && autocvar_cl_nade_timer) // give nade top priority, as it's a matter of life and death
    {
        vector col = '0.25 0.90 1' + vec3(STAT(NADE_TIMER), -STAT(NADE_TIMER), -STAT(NADE_TIMER));
        DrawCircleClippedPic(vec2(0.5 * vid_conwidth, 0.6 * vid_conheight), 0.1 * vid_conheight, "gfx/crosshair_ring", STAT(NADE_TIMER), col, autocvar_hud_colorflash_alpha, DRAWFLAG_ADDITIVE);
        drawstring_aspect(eY * 0.64 * vid_conheight, ((autocvar_cl_nade_timer == 2) ? _("Nade timer") : ""), vec2(vid_conwidth, 0.025 * vid_conheight), '1 1 1', 1, DRAWFLAG_NORMAL);
    }
    else if(STAT(CAPTURE_PROGRESS))
    {
        DrawCircleClippedPic(vec2(0.5 * vid_conwidth, 0.6 * vid_conheight), 0.1 * vid_conheight, "gfx/crosshair_ring", STAT(CAPTURE_PROGRESS), '0.25 0.90 1', autocvar_hud_colorflash_alpha, DRAWFLAG_ADDITIVE);
        drawstring_aspect(eY * 0.64 * vid_conheight, _("Capture progress"), vec2(vid_conwidth, 0.025 * vid_conheight), '1 1 1', 1, DRAWFLAG_NORMAL);
    }
    else if(STAT(REVIVE_PROGRESS))
    {
        DrawCircleClippedPic(vec2(0.5 * vid_conwidth, 0.6 * vid_conheight), 0.1 * vid_conheight, "gfx/crosshair_ring", STAT(REVIVE_PROGRESS), '0.25 0.90 1', autocvar_hud_colorflash_alpha, DRAWFLAG_ADDITIVE);
        drawstring_aspect(eY * 0.64 * vid_conheight, _("Revival progress"), vec2(vid_conwidth, 0.025 * vid_conheight), '1 1 1', 1, DRAWFLAG_NORMAL);
    }
    HUD_Scale_Disable();

    if(autocvar_r_letterbox == 0)
        if(autocvar_viewsize < 120)
        {
            if(!MUTATOR_CALLHOOK(DrawScoreboardAccuracy))
                Accuracy_LoadLevels();

            HUD_Main();
            HUD_Scale_Disable();
        }

    // crosshair goes VERY LAST
    UpdateDamage();
    HUD_Crosshair(this);
    HitSound();
}

void ViewLocation_Mouse()
{
    if(spectatee_status)
        return; // don't draw it as spectator!

    viewloc_mousepos += getmousepos() * autocvar_menu_mouse_speed;
    viewloc_mousepos.x = bound(0, viewloc_mousepos.x, vid_conwidth);
    viewloc_mousepos.y = bound(0, viewloc_mousepos.y, vid_conheight);

    //float cursor_alpha = 1 - autocvar__menu_alpha;
    //cursor_type = CURSOR_NORMAL;
    //draw_cursor(viewloc_mousepos, '0.5 0.5 0', "/cursor_move", '1 1 1', cursor_alpha);
}

void HUD_Cursor_Show()
{
    float cursor_alpha = 1 - autocvar__menu_alpha;
    if(cursor_type == CURSOR_NORMAL)
        draw_cursor_normal(mousepos, '1 1 1', cursor_alpha);
    else if(cursor_type == CURSOR_MOVE)
        draw_cursor(mousepos, '0.5 0.5 0', "/cursor_move", '1 1 1', cursor_alpha);
    else if(cursor_type == CURSOR_RESIZE)
        draw_cursor(mousepos, '0.5 0.5 0', "/cursor_resize", '1 1 1', cursor_alpha);
    else if(cursor_type == CURSOR_RESIZE2)
        draw_cursor(mousepos, '0.5 0.5 0', "/cursor_resize2", '1 1 1', cursor_alpha);
}

void HUD_Mouse(entity player)
{
    if(autocvar__menu_alpha == 1)
        return;

    if(!cursor_active)
    {
        if(player.viewloc && (player.viewloc.spawnflags & VIEWLOC_FREEAIM))
            ViewLocation_Mouse(); // NOTE: doesn't use cursormode
        return;
    }

    if (cursor_active == -1) // starting to display the cursor
    {
        // since HUD_Mouse is called by CSQC_UpdateView before CSQC_InputEvent,
        // in the first frame mousepos is the mouse position of the last time
        // the cursor was displayed, thus we ignore it to avoid a glictch
        cursor_active = 1;
        return;
    }

    if(!autocvar_hud_cursormode)
        update_mousepos();

    cursor_type = CURSOR_NORMAL;
    if(autocvar__hud_configure)
        HUD_Panel_Mouse();
    else
    {
        if (HUD_MinigameMenu_IsOpened())
            HUD_Minigame_Mouse();
        if (QuickMenu_IsOpened())
            QuickMenu_Mouse();
        if (HUD_Radar_Clickable())
            HUD_Radar_Mouse();
    }

    prevMouseClicked = mouseClicked;

    HUD_Cursor_Show();
}

void View_NightVision()
{
    if(!(autocvar_r_fakelight >= 2 || autocvar_r_fullbright) || (serverflags & SERVERFLAG_ALLOW_FULLBRIGHT))
        return;

    // apply night vision effect
    vector tc_00, tc_01, tc_10, tc_11;
    vector rgb = '0 0 0';
    float a;

    if(!nightvision_noise)
    {
        nightvision_noise = new(nightvision_noise);
    }
    if(!nightvision_noise2)
    {
        nightvision_noise2 = new(nightvision_noise2);
    }

    // color tint in yellow
    drawfill('0 0 0', autocvar_vid_conwidth * '1 0 0' + autocvar_vid_conheight * '0 1 0', '0.5 1 0.3', 1, DRAWFLAG_MODULATE);

    // draw BG
    a = Noise_Pink(nightvision_noise, frametime * 1.5) * 0.05 + 0.15;
    rgb = '1 1 1';
    tc_00 = '0 0 0' + '0.2 0 0' * sin(time * 0.3) + '0 0.3 0' * cos(time * 0.7);
    tc_01 = '0 2.25 0' + '0.6 0 0' * cos(time * 1.2) - '0 0.3 0' * sin(time * 2.2);
    tc_10 = '1.5 0 0' - '0.2 0 0' * sin(time * 0.5) + '0 0.5 0' * cos(time * 1.7);
    //tc_11 = '1 1 0' + '0.6 0 0' * sin(time * 0.6) + '0 0.3 0' * cos(time * 0.1);
    tc_11 = tc_01 + tc_10 - tc_00;
    R_BeginPolygon("gfx/nightvision-bg", DRAWFLAG_ADDITIVE, true);
    R_PolygonVertex('0 0 0', tc_00, rgb, a);
    R_PolygonVertex(autocvar_vid_conwidth * '1 0 0', tc_10, rgb, a);
    R_PolygonVertex(autocvar_vid_conwidth * '1 0 0' + autocvar_vid_conheight * '0 1 0', tc_11, rgb, a);
    R_PolygonVertex(autocvar_vid_conheight * '0 1 0', tc_01, rgb, a);
    R_EndPolygon();

    // draw FG
    a = Noise_Pink(nightvision_noise2, frametime * 0.1) * 0.05 + 0.12;
    rgb = '0.3 0.6 0.4' + '0.1 0.4 0.2' * Noise_White(nightvision_noise2, frametime);
    tc_00 = '0 0 0' + '1 0 0' * Noise_White(nightvision_noise2, frametime) + '0 1 0' * Noise_White(nightvision_noise2, frametime);
    tc_01 = tc_00 + '0 3 0' * (1 + Noise_White(nightvision_noise2, frametime) * 0.2);
    tc_10 = tc_00 + '2 0 0' * (1 + Noise_White(nightvision_noise2, frametime) * 0.3);
    tc_11 = tc_01 + tc_10 - tc_00;
    R_BeginPolygon("gfx/nightvision-fg", DRAWFLAG_ADDITIVE, true);
    R_PolygonVertex('0 0 0', tc_00, rgb, a);
    R_PolygonVertex(autocvar_vid_conwidth * '1 0 0', tc_10, rgb, a);
    R_PolygonVertex(autocvar_vid_conwidth * '1 0 0' + autocvar_vid_conheight * '0 1 0', tc_11, rgb, a);
    R_PolygonVertex(autocvar_vid_conheight * '0 1 0', tc_01, rgb, a);
    R_EndPolygon();
}

// visual overlay while in liquids
// provides some effects to the postprocessing function
void HUD_Contents()
{
    if(!autocvar_hud_contents || MUTATOR_CALLHOOK(HUD_Contents))
        return;

    // improved polyblend
    float contentalpha_temp, incontent, liquidalpha, contentfadetime;
    vector liquidcolor;

    switch(pointcontents(view_origin))
    {
        case CONTENT_WATER:
            liquidalpha = autocvar_hud_contents_water_alpha;
            liquidcolor = stov(autocvar_hud_contents_water_color);
            incontent = 1;
            break;

        case CONTENT_LAVA:
            liquidalpha = autocvar_hud_contents_lava_alpha;
            liquidcolor = stov(autocvar_hud_contents_lava_color);
            incontent = 1;
            break;

        case CONTENT_SLIME:
            liquidalpha = autocvar_hud_contents_slime_alpha;
            liquidcolor = stov(autocvar_hud_contents_slime_color);
            incontent = 1;
            break;

        default:
            liquidalpha = 0;
            liquidcolor = '0 0 0';
            incontent = 0;
            break;
    }

    if(incontent) // fade in/out at different speeds so you can do e.g. instant fade when entering water and slow when leaving it.
    { // also lets delcare previous values for blending properties, this way it isn't reset until after you have entered a different content
        contentfadetime = autocvar_hud_contents_fadeintime;
        liquidalpha_prev = liquidalpha;
        liquidcolor_prev = liquidcolor;
    }
    else
        contentfadetime = autocvar_hud_contents_fadeouttime;

    contentalpha_temp = bound(0, drawframetime / max(0.0001, contentfadetime), 1);
    contentavgalpha = contentavgalpha * (1 - contentalpha_temp) + incontent * contentalpha_temp;

    if(contentavgalpha)
        drawfill('0 0 0', vec2(vid_conwidth, vid_conheight), liquidcolor_prev, contentavgalpha * liquidalpha_prev, DRAWFLAG_NORMAL);

    if(autocvar_hud_postprocessing)
    {
        if(autocvar_hud_contents_blur && contentavgalpha)
        {
            content_blurpostprocess.x = 1;
            content_blurpostprocess.y = contentavgalpha * autocvar_hud_contents_blur;
            content_blurpostprocess.z = contentavgalpha * autocvar_hud_contents_blur_alpha;
        }
        else
        {
            content_blurpostprocess.x = 0;
            content_blurpostprocess.y = 0;
            content_blurpostprocess.z = 0;
        }
    }
}

// visual pain effects on the screen
// provides some effects to the postprocessing function
void HUD_Damage()
{
    if(!autocvar_hud_damage || STAT(FROZEN))
        return;

    vector splash_pos = '0 0 0', splash_size = '0 0 0';
    splash_size.x = max(vid_conwidth, vid_conheight);
    splash_size.y = max(vid_conwidth, vid_conheight);
    splash_pos.x = (vid_conwidth - splash_size.x) / 2;
    splash_pos.y = (vid_conheight - splash_size.y) / 2;

    float myhealth_flash_temp;
    myhealth = STAT(HEALTH);

    // fade out
    myhealth_flash = max(0, myhealth_flash - autocvar_hud_damage_fade_rate * frametime);
    // add new damage
    myhealth_flash = bound(0, myhealth_flash + dmg_take * autocvar_hud_damage_factor, autocvar_hud_damage_maxalpha);

    float pain_threshold, pain_threshold_lower, pain_threshold_lower_health;
    pain_threshold = autocvar_hud_damage_pain_threshold;
    pain_threshold_lower = autocvar_hud_damage_pain_threshold_lower;
    pain_threshold_lower_health = autocvar_hud_damage_pain_threshold_lower_health;

    if(pain_threshold_lower && myhealth < pain_threshold_lower_health)
    {
        pain_threshold = pain_threshold - max(autocvar_hud_damage_pain_threshold_pulsating_min, fabs(sin(M_PI * time / autocvar_hud_damage_pain_threshold_pulsating_period))) * pain_threshold_lower * (1 - max(0, myhealth)/pain_threshold_lower_health);
    }

    myhealth_flash_temp = bound(0, myhealth_flash - pain_threshold, 1);

    if(myhealth_prev < 1)
    {
        if(myhealth >= 1)
        {
            myhealth_flash = 0; // just spawned, clear the flash immediately
            myhealth_flash_temp = 0;
        }
        else
        {
            myhealth_flash += autocvar_hud_damage_fade_rate * frametime; // dead
        }
    }

    if(spectatee_status == -1 || intermission)
    {
        myhealth_flash = 0; // observing, or match ended
        myhealth_flash_temp = 0;
    }

    myhealth_prev = myhealth;

    // IDEA: change damage color/picture based on player model for robot/alien species?
    // pro: matches model better
    // contra: it's not red because blood is red, but because red is an alarming color, so red should stay
    // maybe different reddish pics?
    if(autocvar_cl_gentle_damage || autocvar_cl_gentle)
    {
        if(autocvar_cl_gentle_damage == 2)
        {
            if(myhealth_flash < pain_threshold) // only randomize when the flash is gone
                myhealth_gentlergb = randomvec();
        }
        else
            myhealth_gentlergb = stov(autocvar_hud_damage_gentle_color);

        if(myhealth_flash_temp > 0)
            drawfill('0 0 0', vec2(vid_conwidth, vid_conheight), myhealth_gentlergb, autocvar_hud_damage_gentle_alpha_multiplier * bound(0, myhealth_flash_temp, 1) * autocvar_hud_damage, DRAWFLAG_NORMAL);
    }
    else if(myhealth_flash_temp > 0)
        drawpic(splash_pos, "gfx/blood", splash_size, stov(autocvar_hud_damage_color), bound(0, myhealth_flash_temp, 1) * autocvar_hud_damage, DRAWFLAG_NORMAL);

    if(autocvar_hud_postprocessing) // we still need to set this anyway even when chase_active is set, this way it doesn't get stuck on.
    {
        if(autocvar_hud_damage_blur && myhealth_flash_temp)
        {
            damage_blurpostprocess.x = 1;
            damage_blurpostprocess.y = bound(0, myhealth_flash_temp, 1) * autocvar_hud_damage_blur;
            damage_blurpostprocess.z = bound(0, myhealth_flash_temp, 1) * autocvar_hud_damage_blur_alpha;
        }
        else
        {
            damage_blurpostprocess.x = 0;
            damage_blurpostprocess.y = 0;
            damage_blurpostprocess.z = 0;
        }
    }
}

void View_PostProcessing()
{
    float e1 = (autocvar_hud_postprocessing_maxbluralpha != 0);
    float e2 = (autocvar_hud_powerup != 0);
    if(autocvar_hud_postprocessing && (e1 || e2)) // TODO: Remove this code and re-do the postprocess handling in the engine, where it properly belongs.
    {
        // enable or disable rendering types if they are used or not
        if(cvar("r_glsl_postprocess_uservec1_enable") != e1) { cvar_set("r_glsl_postprocess_uservec1_enable", ftos(e1)); }
        if(cvar("r_glsl_postprocess_uservec2_enable") != e2) { cvar_set("r_glsl_postprocess_uservec2_enable", ftos(e2)); }

        // blur postprocess handling done first (used by hud_damage and hud_contents)
        if((damage_blurpostprocess.x || content_blurpostprocess.x))
        {
            float blurradius = bound(0, damage_blurpostprocess.y + content_blurpostprocess.y, autocvar_hud_postprocessing_maxblurradius);
            float bluralpha = bound(0, damage_blurpostprocess.z + content_blurpostprocess.z, autocvar_hud_postprocessing_maxbluralpha);
            if(blurradius != old_blurradius || bluralpha != old_bluralpha) // reduce cvar_set spam as much as possible
            {
                cvar_set("r_glsl_postprocess_uservec1", strcat(ftos(blurradius), " ", ftos(bluralpha), " 0 0"));
                old_blurradius = blurradius;
                old_bluralpha = bluralpha;
            }
        }
        else if(cvar_string("r_glsl_postprocess_uservec1") != "0 0 0 0") // reduce cvar_set spam as much as possible
        {
            cvar_set("r_glsl_postprocess_uservec1", "0 0 0 0");
            old_blurradius = 0;
            old_bluralpha = 0;
        }

        // edge detection postprocess handling done second (used by hud_powerup)
        float sharpen_intensity = 0;
        FOREACH(StatusEffect, it.instanceOfPowerups,
        {
            float powerup_finished = StatusEffects_gettime(it, g_statuseffects) - time;
            if(powerup_finished > 0)
                sharpen_intensity += powerup_finished;
        });

        sharpen_intensity = bound(0, ((STAT(HEALTH) > 0) ? sharpen_intensity : 0), 5); // Check to see if player is alive (if not, set 0) - also bound to fade out starting at 5 seconds.

        if(autocvar_hud_powerup && sharpen_intensity > 0)
        {
            if(sharpen_intensity != old_sharpen_intensity) // reduce cvar_set spam as much as possible
            {
                cvar_set("r_glsl_postprocess_uservec2", strcat(ftos((sharpen_intensity / 5) * autocvar_hud_powerup), " ", ftos(-sharpen_intensity * autocvar_hud_powerup), " 0 0"));
                old_sharpen_intensity = sharpen_intensity;
            }
        }
        else if(cvar_string("r_glsl_postprocess_uservec2") != "0 0 0 0") // reduce cvar_set spam as much as possible
        {
            cvar_set("r_glsl_postprocess_uservec2", "0 0 0 0");
            old_sharpen_intensity = 0;
        }

        if(cvar("r_glsl_postprocess") == 0)
            cvar_set("r_glsl_postprocess", "2");
    }
    else if(cvar("r_glsl_postprocess") == 2)
        cvar_set("r_glsl_postprocess", "0");
}

void View_Lock()
{
    int lock_type = autocvar_cl_lockview;

    if (!autocvar_hud_cursormode
        && ((autocvar__hud_configure && spectatee_status <= 0)
            || intermission > 1
            || HUD_Radar_Clickable()
            || HUD_MinigameMenu_IsOpened()
            || QuickMenu_IsOpened()
        )
    )
        lock_type = 1;

    // lock_type 1: lock origin and angles
    // lock_type 2: lock only origin
    if(lock_type >= 1)
        setproperty(VF_ORIGIN, freeze_org);
    else
        freeze_org = getpropertyvec(VF_ORIGIN);
    if(lock_type == 1)
        setproperty(VF_ANGLES, freeze_ang);
    else
        freeze_ang = getpropertyvec(VF_ANGLES);
}

void View_DemoCamera()
{
    if(camera_active) // Camera for demo playback
    {
        if(autocvar_camera_enable)
            CSQC_Demo_Camera();
        else
        {
            cvar_set("chase_active", ftos(chase_active_backup));
            cvar_set("cl_demo_mousegrab", "0");
            camera_active = false;
        }
    }
    else
    {
#ifdef CAMERATEST
        if(autocvar_camera_enable)
#else
        if(autocvar_camera_enable && isdemo())
#endif
        {
            // Enable required Darkplaces cvars
            chase_active_backup = autocvar_chase_active;
            cvar_set("chase_active", "2");
            cvar_set("cl_demo_mousegrab", "1");
            camera_active = true;
            camera_mode = false;
        }
    }
}

#ifdef BLURTEST
void View_BlurTest()
{
    if(time > blurtest_time0 && time < blurtest_time1)
    {
        float t = (time - blurtest_time0) / (blurtest_time1 - blurtest_time0);
        float r = t * blurtest_radius;
        float f = 1 / (t ** blurtest_power) - 1;

        cvar_set("r_glsl_postprocess", "1");
        cvar_set("r_glsl_postprocess_uservec1", strcat(ftos(r), " ", ftos(f), " 0 0"));
    }
    else
    {
        cvar_set("r_glsl_postprocess", "0");
        cvar_set("r_glsl_postprocess_uservec1", "0 0 0 0");
    }
}
#endif

void View_CheckButtonStatus()
{
    float is_dead = (STAT(HEALTH) <= 0);

    // FIXME do we need this hack?
    if(isdemo())
    {
        // in demos, input_buttons do not work
        button_zoom = (autocvar__togglezoom == "-");
    }
    else if(button_zoom
        && autocvar_cl_unpress_zoom_on_death
        && (spectatee_status >= 0)
        && (is_dead || intermission))
    {
        // no zoom while dead or in intermission please
        localcmd("-zoom\n");
        button_zoom = false;
    }

    if(autocvar_fov <= 59.5)
    {
        if(!zoomscript_caught)
        {
            localcmd("+button9\n");
            zoomscript_caught = 1;
        }
    }
    else
    {
        if(zoomscript_caught)
        {
            localcmd("-button9\n");
            zoomscript_caught = 0;
        }
    }

    if(active_minigame && HUD_MinigameMenu_IsOpened())
    {
        if(!minigame_wasactive)
        {
            localcmd("+button12\n");
            minigame_wasactive = true;
        }
    }
    else if(minigame_wasactive)
    {
        localcmd("-button12\n");
        minigame_wasactive = false;
    }

    for(int slot = 0; slot < MAX_WEAPONSLOTS; ++slot)
    {
        entity wepent = viewmodels[slot];

        if(wepent.last_switchweapon != wepent.switchweapon)
        {
            weapontime = time;
            wepent.last_switchweapon = wepent.switchweapon;
            if(slot == 0 && button_zoom && autocvar_cl_unpress_zoom_on_weapon_switch)
            {
                localcmd("-zoom\n");
                button_zoom = false;
            }
            if(slot == 0 && autocvar_cl_unpress_attack_on_weapon_switch)
            {
                localcmd("-fire\n");
                localcmd("-fire2\n");
                button_attack2 = false;
            }
        }
        if(wepent.last_activeweapon != wepent.activeweapon)
        {
            wepent.last_activeweapon = wepent.activeweapon;

            entity e = wepent.activeweapon;
            if(e.netname != "")
                localcmd(strcat("\ncl_hook_activeweapon ", e.netname), "\n");
            else if(slot == 0)
                localcmd("\ncl_hook_activeweapon none\n");
        }
    }
}

bool ov_enabled;
float oldr_nearclip;
float oldr_farclip_base;
float oldr_farclip_world;
float oldr_novis;
float oldr_useportalculling;
float oldr_useinfinitefarclip;
vector ov_org = '0 0 0';
vector ov_mid = '0 0 0';
vector ov_worldmin = '0 0 0';
vector ov_worldmax = '0 0 0';

void View_Ortho()
{
    ov_org = '0 0 0';
    ov_mid = '0 0 0';
    ov_worldmin = '0 0 0';
    ov_worldmax = '0 0 0';
    if(autocvar_cl_orthoview)
    {
        ov_worldmin = mi_picmin;
        ov_worldmax = mi_picmax;

        float ov_width = (ov_worldmax.x - ov_worldmin.x);
        float ov_height = (ov_worldmax.y - ov_worldmin.y);
        float ov_distance = (max(vid_width, vid_height) * max(ov_width, ov_height));

        ov_mid = ((ov_worldmax + ov_worldmin) * 0.5);
        ov_org = vec3(ov_mid.x, ov_mid.y, (ov_mid.z + ov_distance));

        float ov_nearest = vlen(ov_org - vec3(
            bound(ov_worldmin.x, ov_org.x, ov_worldmax.x),
            bound(ov_worldmin.y, ov_org.y, ov_worldmax.y),
            bound(ov_worldmin.z, ov_org.z, ov_worldmax.z)
        ));

        float ov_furthest = 0;
        float dist = 0;

        if((dist = vdist((vec3(ov_worldmin.x, ov_worldmin.y, ov_worldmin.z) - ov_org), >, ov_furthest))) { ov_furthest = dist; }
        if((dist = vdist((vec3(ov_worldmax.x, ov_worldmin.y, ov_worldmin.z) - ov_org), >, ov_furthest))) { ov_furthest = dist; }
        if((dist = vdist((vec3(ov_worldmin.x, ov_worldmax.y, ov_worldmin.z) - ov_org), >, ov_furthest))) { ov_furthest = dist; }
        if((dist = vdist((vec3(ov_worldmin.x, ov_worldmin.y, ov_worldmax.z) - ov_org), >, ov_furthest))) { ov_furthest = dist; }
        if((dist = vdist((vec3(ov_worldmax.x, ov_worldmax.y, ov_worldmin.z) - ov_org), >, ov_furthest))) { ov_furthest = dist; }
        if((dist = vdist((vec3(ov_worldmin.x, ov_worldmax.y, ov_worldmax.z) - ov_org), >, ov_furthest))) { ov_furthest = dist; }
        if((dist = vdist((vec3(ov_worldmax.x, ov_worldmin.y, ov_worldmax.z) - ov_org), >, ov_furthest))) { ov_furthest = dist; }
        if((dist = vdist((vec3(ov_worldmax.x, ov_worldmax.y, ov_worldmax.z) - ov_org), >, ov_furthest))) { ov_furthest = dist; }

        if(!ov_enabled)
        {
            oldr_nearclip = cvar("r_nearclip");
            oldr_farclip_base = cvar("r_farclip_base");
            oldr_farclip_world = cvar("r_farclip_world");
            oldr_novis = cvar("r_novis");
            oldr_useportalculling = cvar("r_useportalculling");
            oldr_useinfinitefarclip = cvar("r_useinfinitefarclip");
        }

        cvar_settemp("r_nearclip", ftos(ov_nearest));
        cvar_settemp("r_farclip_base", ftos(ov_furthest));
        cvar_settemp("r_farclip_world", "0");
        cvar_settemp("r_novis", "1");
        cvar_settemp("r_useportalculling", "0");
        cvar_settemp("r_useinfinitefarclip", "0");

        setproperty(VF_ORIGIN, ov_org);
        setproperty(VF_ANGLES, '90 0 0');

        ov_enabled = true;

        #if 0
        LOG_INFOF("OrthoView: org = %s, angles = %s, distance = %f, nearest = %f, furthest = %f",
            vtos(ov_org),
            vtos(getpropertyvec(VF_ANGLES)),
            ov_distance,
            ov_nearest,
            ov_furthest);
        #endif
    }
    else
    {
        if(ov_enabled)
        {
            cvar_set("r_nearclip", ftos(oldr_nearclip));
            cvar_set("r_farclip_base", ftos(oldr_farclip_base));
            cvar_set("r_farclip_world", ftos(oldr_farclip_world));
            cvar_set("r_novis", ftos(oldr_novis));
            cvar_set("r_useportalculling", ftos(oldr_useportalculling));
            cvar_set("r_useinfinitefarclip", ftos(oldr_useinfinitefarclip));
        }
        ov_enabled = false;
    }
}

void View_UpdateFov()
{
    vector fov;
    if(autocvar_cl_orthoview)
        fov = GetOrthoviewFOV(ov_worldmin, ov_worldmax, ov_mid, ov_org);
    else if(csqcplayer.viewloc)
        fov = GetViewLocationFOV(110); // enforce 110 fov, so things don't look odd
    else
        fov = GetCurrentFov(autocvar_fov);

    setproperty(VF_FOV, fov);
}

void CSQC_UpdateView(entity this, float w, float h)
{
    TC(int, w); TC(int, h);

    execute_next_frame();

    ++framecount;

    stats_get();
    hud = STAT(HUD);

    ReplicateVars(REPLICATEVARS_CHECK);

    HUD_Scale_Disable();

    if(autocvar__hud_showbinds_reload) // menu can set this one
    {
        db_close(binddb);
        binddb = db_create();
        cvar_set("_hud_showbinds_reload", "0");
    }

    if(checkextension("DP_CSQC_MINFPS_QUALITY"))
        view_quality = getproperty(VF_MINFPS_QUALITY);
    else
        view_quality = 1;

    button_attack2 = PHYS_INPUT_BUTTON_ATCK2(this);
    button_zoom = PHYS_INPUT_BUTTON_ZOOM(this);

    vector vf_size = getpropertyvec(VF_SIZE);
    vector vf_min = getpropertyvec(VF_MIN);
    vid_width = vf_size.x;
    vid_height = vf_size.y;

    ticrate = STAT(MOVEVARS_TICRATE) * STAT(MOVEVARS_TIMESCALE);

    if (autocvar_chase_active)
    {
        // in first person view if r_drawviewmodel is off weapon isn't visible
        // and server doesn't throw any casing
        // switching to 3rd person view r_drawviewmodel is set to -1 to let know the server casings
        // can be thrown for self since own weapon model is visible
        if (autocvar_r_drawviewmodel == 0 && STAT(HEALTH) > 0)
            cvar_set("r_drawviewmodel", "-1");
    }
    else
    {
        if (autocvar_r_drawviewmodel < 0)
            cvar_set("r_drawviewmodel", "0");
    }

    WaypointSprite_Load();

    CSQCPlayer_SetCamera();

    if(player_localentnum <= maxclients) // is it a client?
        current_player = player_localentnum - 1;
    else // then player_localentnum is the vehicle I'm driving
        current_player = player_localnum;
    myteam = entcs_GetTeam(current_player);

    // abused multiple places below
    entity local_player = ((csqcplayer) ? csqcplayer : CSQCModel_server2csqc(player_localentnum - 1));
    if(!local_player)
        local_player = this; // fall back!

    View_EventChase(local_player);

    // do lockview after event chase camera so that it still applies whenever necessary.
    View_Lock();

    WarpZone_FixView();
    //WarpZone_FixPMove();

    View_Ortho();

    // run viewmodel_draw before updating view_angles to the angles calculated by WarpZone_FixView
    // viewmodel_draw needs to use the view_angles set by the engine on every CSQC_UpdateView call
    for(int slot = 0; slot < MAX_WEAPONSLOTS; ++slot)
        viewmodel_draw(viewmodels[slot]);

    // Render the Scene
    view_origin = getpropertyvec(VF_ORIGIN);
    view_angles = getpropertyvec(VF_ANGLES);
    MAKE_VECTORS(view_angles, view_forward, view_right, view_up);

#ifdef BLURTEST
    View_BlurTest();
#endif

    TargetMusic_Advance();
    Fog_Force();
    fpscounter_update();

    if(drawtime == 0)
        drawframetime = 0.01666667; // when we don't know fps yet, we assume 60fps
    else
        drawframetime = bound(0.000001, time - drawtime, 1);
    drawtime = time;

    // watch for gametype changes here...
    // in ParseStuffCMD the cmd isn't executed yet :/
    // might even be better to add the gametype to TE_CSQC_INIT...?
    if(!postinit)
        PostInit();

    if(intermission && !intermission_time)
        intermission_time = time;

    if(STAT(GAME_STOPPED) && !game_stopped_time)
        game_stopped_time = time;
    else if(game_stopped_time && !STAT(GAME_STOPPED))
        game_stopped_time = 0;

    if(intermission && !isdemo() && !(calledhooks & HOOK_END))
    {
        if(calledhooks & HOOK_START)
        {
            localcmd("\ncl_hook_gameend\n");
            calledhooks |= HOOK_END;
        }
    }

    Announcer();

    View_CheckButtonStatus();

    ColorTranslateMode = autocvar_cl_stripcolorcodes;

    // ALWAYS Clear Current Scene First
    clearscene();

    setproperty(VF_ORIGIN, view_origin);
    setproperty(VF_ANGLES, view_angles);

    // FIXME engine bug? VF_SIZE and VF_MIN are not restored to sensible values by this
    setproperty(VF_SIZE, vf_size);
    setproperty(VF_MIN, vf_min);

    // Assign Standard Viewflags
    // Draw the World (and sky)
    setproperty(VF_DRAWWORLD, 1);

    // Set the console size vars
    vid_conwidth = autocvar_vid_conwidth;
    vid_conheight = autocvar_vid_conheight;
    vid_pixelheight = autocvar_vid_pixelheight;

    View_UpdateFov();

    View_DemoCamera();

    // Draw the Crosshair
    setproperty(VF_DRAWCROSSHAIR, 0); //Make sure engine crosshairs are always hidden

    // Draw the Engine Status Bar (the default Quake HUD)
    setproperty(VF_DRAWENGINESBAR, 0);

    // Update the mouse position
    /*
       mousepos_x = vid_conwidth;
       mousepos_y = vid_conheight;
       mousepos = mousepos*0.5 + getmousepos();
     */

    IL_EACH(g_drawables, it.draw, it.draw(it));

    addentities(MASK_NORMAL | MASK_ENGINE | MASK_ENGINEVIEWMODELS); // TODO: .health is used in cl_deathfade (a feature we have turned off currently)
    renderscene();

    // Now the the scene has been rendered, begin with the 2D drawing functions

    View_NightVision();
    DrawReticle(local_player);
    HUD_Contents();
    HUD_Damage();
    View_PostProcessing();

    // draw 2D entities
    IL_EACH(g_drawables_2d, it.draw2d, it.draw2d(it));
    Draw_ShowNames_All();
#if ENABLE_DEBUGDRAW
    Debug_Draw();
#endif

    scoreboard_active = Scoreboard_WouldDraw();

    HUD_Draw(this); // this parameter for deep vehicle function

    if(NextFrameCommand)
    {
        localcmd("\n", NextFrameCommand, "\n");
        NextFrameCommand = string_null;
    }

    // we must do this check AFTER a frame was rendered, or it won't work
    if(cs_project_is_b0rked == 0)
    {
        string w0, h0;
        w0 = ftos(autocvar_vid_conwidth);
        h0 = ftos(autocvar_vid_conheight);
        //setproperty(VF_VIEWPORT, '0 0 0', '640 480 0');
        //setproperty(VF_FOV, '90 90 0');
        setproperty(VF_ORIGIN, '0 0 0');
        setproperty(VF_ANGLES, '0 0 0');
        setproperty(VF_PERSPECTIVE, 1);
        vector forward, right, up;
        MAKE_VECTORS('0 0 0', forward, right, up);
        vector v1, v2;
        cvar_set("vid_conwidth", "800");
        cvar_set("vid_conheight", "600");
        v1 = cs_project(forward);
        cvar_set("vid_conwidth", "640");
        cvar_set("vid_conheight", "480");
        v2 = cs_project(forward);
        if(v1 == v2)
            cs_project_is_b0rked = 1;
        else
            cs_project_is_b0rked = -1;
        cvar_set("vid_conwidth", w0);
        cvar_set("vid_conheight", h0);
    }

    HUD_Mouse(local_player);

    cl_notice_run();
    unpause_update();
    Net_Flush();

    // let's reset the view back to normal for the end
    setproperty(VF_MIN, '0 0 0');
    setproperty(VF_SIZE, '1 0 0' * w + '0 1 0' * h);

    IL_ENDFRAME();
}


// following vectors must be global to allow seamless switching between camera modes
vector camera_offset, current_camera_offset, mouse_angles, current_angles, current_origin, current_position;
void CSQC_Demo_Camera()
{
    float speed, attenuation, dimensions;
    vector tmp, delta;

    if( autocvar_camera_reset || !camera_mode )
    {
        camera_offset = '0 0 0';
        current_angles = '0 0 0';
        camera_direction = '0 0 0';
        camera_offset.z += 30;
        camera_offset.x += 30 * -cos(current_angles.y * DEG2RAD);
        camera_offset.y += 30 * -sin(current_angles.y * DEG2RAD);
        current_origin = view_origin;
        current_camera_offset  = camera_offset;
        cvar_set("camera_reset", "0");
        camera_mode = CAMERA_CHASE;
    }

    // Camera angles
    if( camera_roll )
        mouse_angles.z += camera_roll * autocvar_camera_speed_roll;

    if(autocvar_camera_look_player)
    {
        vector dir;
        float n;

        dir = normalize(view_origin - current_position);
        n = mouse_angles.z;
        mouse_angles = vectoangles(dir);
        mouse_angles.x = mouse_angles.x * -1;
        mouse_angles.z = n;
    }
    else
    {
        tmp = getmousepos() * 0.1;
        if(vdist(tmp, >, autocvar_camera_mouse_threshold))
        {
            mouse_angles.x += tmp.y * cos(mouse_angles.z * DEG2RAD) + (tmp.x * sin(mouse_angles.z * DEG2RAD));
            mouse_angles.y -= tmp.x * cos(mouse_angles.z * DEG2RAD) + (tmp.y * -sin(mouse_angles.z * DEG2RAD));
        }
    }

    while (mouse_angles.x < -180) mouse_angles.x = mouse_angles.x + 360;
    while (mouse_angles.x > 180) mouse_angles.x = mouse_angles.x - 360;
    while (mouse_angles.y < -180) mouse_angles.y = mouse_angles.y + 360;
    while (mouse_angles.y > 180) mouse_angles.y = mouse_angles.y - 360;

    // Fix difference when angles don't have the same sign
    delta = '0 0 0';
    if(mouse_angles.y < -60 && current_angles.y > 60)
        delta = '0 360 0';
    if(mouse_angles.y > 60 && current_angles.y < -60)
        delta = '0 -360 0';

    if(autocvar_camera_look_player)
        attenuation = autocvar_camera_look_attenuation;
    else
        attenuation = autocvar_camera_speed_attenuation;

    attenuation = 1 / max(1, attenuation);
    current_angles += (mouse_angles - current_angles + delta) * attenuation;

    while (current_angles.x < -180) current_angles.x = current_angles.x + 360;
    while (current_angles.x > 180) current_angles.x = current_angles.x - 360;
    while (current_angles.y < -180) current_angles.y = current_angles.y + 360;
    while (current_angles.y > 180) current_angles.y = current_angles.y - 360;

    // Camera position
    tmp = '0 0 0';
    dimensions = 0;

    if( camera_direction.x )
    {
        tmp.x = camera_direction.x * cos(current_angles.y * DEG2RAD);
        tmp.y = camera_direction.x * sin(current_angles.y * DEG2RAD);
        if( autocvar_camera_forward_follows && !autocvar_camera_look_player )
            tmp.z = camera_direction.x * -sin(current_angles.x * DEG2RAD);
        ++dimensions;
    }

    if( camera_direction.y )
    {
        tmp.x += camera_direction.y * -sin(current_angles.y * DEG2RAD);
        tmp.y += camera_direction.y * cos(current_angles.y * DEG2RAD) * cos(current_angles.z * DEG2RAD);
        tmp.z += camera_direction.y * sin(current_angles.z * DEG2RAD);
        ++dimensions;
    }

    if( camera_direction.z )
    {
        tmp.z += camera_direction.z * cos(current_angles.z * DEG2RAD);
        ++dimensions;
    }

    if(autocvar_camera_free)
        speed = autocvar_camera_speed_free;
    else
        speed = autocvar_camera_speed_chase;

    if(dimensions)
    {
        speed = speed * sqrt(1 / dimensions);
        camera_offset += tmp * speed;
    }

    current_camera_offset += (camera_offset - current_camera_offset) * attenuation;

    // Camera modes
    if( autocvar_camera_free )
    {
        if ( camera_mode == CAMERA_CHASE )
        {
            current_camera_offset = current_origin + current_camera_offset;
            camera_offset = current_origin + camera_offset;
        }

        camera_mode = CAMERA_FREE;
        current_position = current_camera_offset;
    }
    else
    {
        if ( camera_mode == CAMERA_FREE )
        {
            current_origin = view_origin;
            camera_offset = camera_offset - current_origin;
            current_camera_offset = current_camera_offset - current_origin;
        }

        camera_mode = CAMERA_CHASE;

        if(autocvar_camera_chase_smoothly)
            current_origin += (view_origin - current_origin) * attenuation;
        else
            current_origin = view_origin;

        current_position = current_origin + current_camera_offset;
    }

    setproperty(VF_ANGLES, current_angles);
    setproperty(VF_ORIGIN, current_position);
}