Function moveplayer

source/src/physics.cpp:398–773

FVARP(flyspeed, 1.0, 2.0, 5.0);

void moveplayer(physent *pl, int moveres, bool local, int curtime)
{
    bool water = false;
    const bool editfly = pl->state==CS_EDITING;
    const bool specfly = pl->type==ENT_PLAYER && ((playerent *)pl)->spectatemode==SM_FLY;
    const bool isfly = editfly || specfly;

    vec d;      // vector of direction we ideally want to move in

    float drop = 0, rise = 0;

    if(pl->type==ENT_BOUNCE)
    {
        bounceent* bounce = (bounceent *) pl;
        water = waterlevel > pl->o.z;

        const float speed = curtime*pl->maxspeed/(water ? 2000.0f : 1000.0f);
        const float friction = water ? 20.0f : (pl->onfloor || isfly ? 6.0f : 30.0f);
        const float fpsfric = max(friction*20.0f/curtime, 1.0f);

        if(pl->onfloor) // apply friction
        {
            pl->vel.mul(fpsfric-1);
            pl->vel.div(fpsfric);
        }
        else // apply gravity
        {
            const float CUBES_PER_METER = 4; // assumes 4 cubes make up 1 meter
            const float BOUNCE_MASS = 0.5f; // sane default mass of 0.5 kg
            const float GRAVITY = BOUNCE_MASS*9.81f/CUBES_PER_METER/1000.0f;
            bounce->vel.z -= GRAVITY*curtime;
        }

        d = bounce->vel;
        d.mul(speed);
        if(water) d.div(6.0f); // incorrect

        // rotate
        float rotspeed = bounce->rotspeed*d.magnitude();
        pl->pitch = fmod(pl->pitch+rotspeed, 360.0f);
        pl->yaw = fmod(pl->yaw+rotspeed, 360.0f);
    }
    else // fake physics for player ents to create _the_ cube movement (tm)
    {
        const int timeinair = pl->timeinair;
        int move = intermission || (pl->onladder && !pl->onfloor && pl->move == -1) ? 0 : pl->move; // movement on ladder
        if(!editfly) water = waterlevel > pl->o.z - 0.5f;

        float chspeed = (pl->onfloor || pl->onladder || !pl->crouchedinair) ? 0.4f : 1.0f;

        const bool crouching = pl->crouching || (pl->eyeheight < pl->maxeyeheight && pl->eyeheight > 1.1f);
        const float speed = curtime/(water ? 2000.0f : 1000.0f)*pl->maxspeed*(crouching && pl->state != CS_EDITING ? chspeed : 1.0f)*(pl==player1 && isfly ? flyspeed : 1.0f);
        const float friction = water ? 20.0f : (pl->onfloor || isfly ? 6.0f : (pl->onladder ? 1.5f : 30.0f));
        const float fpsfric = max(friction/curtime*20.0f, 1.0f);

        d.x = (float)(move*cosf(RAD*(pl->yaw-90)));
        d.y = (float)(move*sinf(RAD*(pl->yaw-90)));
        d.z = 0.0f;