]> de.git.xonotic.org Git - xonotic/xonotic-data.pk3dir.git/blobdiff - qcsrc/ecs/systems/physics.qc
Make ladders use the same iterative logic as conveyors, fixes some maps with super...
[xonotic/xonotic-data.pk3dir.git] / qcsrc / ecs / systems / physics.qc
index 8a07efa83fe14932903f83b426f0c032de4fad78..70ecc524cafd2680feae7769785296f0f58f6f14 100644 (file)
@@ -4,27 +4,41 @@
 .int disableclientprediction;
 
 void sys_phys_simulate(entity this, float dt);
+void sys_phys_simulate_simple(entity this, float dt);
+
+void sys_phys_postupdate(entity this);
 
 void sys_phys_update(entity this, float dt)
 {
+       if (!IS_CLIENT(this)) {
+               sys_phys_simulate_simple(this, dt);
+               return;
+       }
        sys_in_update(this, dt);
 
        sys_phys_fix(this, dt);
-       if (sys_phys_override(this)) { return; } sys_phys_monitor(this);
+       if (sys_phys_override(this, dt))
+               return;
+
+       sys_phys_monitor(this, dt);
 
-       int buttons_prev = this.buttons_old;
-       this.buttons_old = PHYS_INPUT_BUTTON_MASK(this);
-       this.movement_old = this.movement;
-       this.v_angle_old = this.v_angle;
+       PHYS_CS(this).movement_old = PHYS_CS(this).movement;
+       PHYS_CS(this).v_angle_old = this.v_angle;
+       PHYS_CS(this).buttons_old = PHYS_INPUT_BUTTON_MASK(this);
 
        sys_phys_ai(this);
 
        sys_phys_pregame_hold(this);
 
        if (IS_SVQC) {
-               if (PHYS_MOVETYPE(this) == MOVETYPE_NONE) { return; }
+               if (this.move_movetype == MOVETYPE_NONE) { return; }
                // when we get here, disableclientprediction cannot be 2
-               this.disableclientprediction = 0;
+               if(this.move_movetype == MOVETYPE_FOLLOW) // not compatible with prediction
+                       this.disableclientprediction = 1;
+               else if(this.move_qcphysics)
+                       this.disableclientprediction = -1;
+               else
+                       this.disableclientprediction = 0;
        }
 
        viewloc_PlayerPhysics(this);
@@ -33,31 +47,35 @@ void sys_phys_update(entity this, float dt)
 
        PM_check_blocked(this);
 
-       float maxspeed_mod = (!this.in_swamp) ? 1 : this.swamp_slowdown;  // cvar("g_balance_swamp_moverate");
+       float maxspeed_mod = 1;
 
 // conveyors: first fix velocity
-       if (this.conveyor.state) { this.velocity -= this.conveyor.movedir; }
-       MUTATOR_CALLHOOK(PlayerPhysics, this);
+       if (this.conveyor.active) { this.velocity -= this.conveyor.movedir; }
+       MUTATOR_CALLHOOK(PlayerPhysics, this, dt);
 
        if (!IS_PLAYER(this)) {
                sys_phys_spectator_control(this);
-               maxspeed_mod = this.spectatorspeed;
+               maxspeed_mod = STAT(SPECTATORSPEED, this);
        }
        sys_phys_fixspeed(this, maxspeed_mod);
 
        if (IS_DEAD(this)) {
                // handle water here
                vector midpoint = ((this.absmin + this.absmax) * 0.5);
-               if (pointcontents(midpoint) == CONTENT_WATER) {
+               int cont = pointcontents(midpoint);
+               if (cont == CONTENT_WATER || cont == CONTENT_LAVA || cont == CONTENT_SLIME) {
                        this.velocity = this.velocity * 0.5;
 
                        // do we want this?
                        // if(pointcontents(midpoint + '0 0 2') == CONTENT_WATER)
                        // { this.velocity_z = 70; }
                }
-               goto end;
+               sys_phys_postupdate(this);
+               return;
        }
 
+       PM_check_slick(this);
+
        if (IS_SVQC && !PHYS_FIXANGLE(this)) { this.angles = '0 1 0' * this.v_angle.y; }
        if (IS_PLAYER(this)) {
                if (IS_ONGROUND(this)) {
@@ -72,39 +90,43 @@ void sys_phys_update(entity this, float dt)
        if (this.flags & FL_WATERJUMP) {
                this.velocity_x = this.movedir.x;
                this.velocity_y = this.movedir.y;
-               if (time > PHYS_TELEPORT_TIME(this)
-                   || this.waterlevel == WATERLEVEL_NONE
-                   || PHYS_WATERJUMP_TIME(this) <= 0
-                  ) {
+               if (this.waterlevel == WATERLEVEL_NONE) {
                        this.flags &= ~FL_WATERJUMP;
-                       PHYS_TELEPORT_TIME(this) = 0;
-                       PHYS_WATERJUMP_TIME(this) = 0;
                }
-       } else if (MUTATOR_CALLHOOK(PM_Physics, this, maxspeed_mod)) {
+       } else if (MUTATOR_CALLHOOK(PM_Physics, this, maxspeed_mod, dt)) {
                // handled
-       } else if (PHYS_MOVETYPE(this) == MOVETYPE_NOCLIP
-           || PHYS_MOVETYPE(this) == MOVETYPE_FLY
-           || PHYS_MOVETYPE(this) == MOVETYPE_FLY_WORLDONLY
+       } else if (this.move_movetype == MOVETYPE_NOCLIP
+           || this.move_movetype == MOVETYPE_FLY
+           || this.move_movetype == MOVETYPE_FLY_WORLDONLY
            || MUTATOR_CALLHOOK(IsFlying, this)) {
                this.com_phys_friction = PHYS_FRICTION(this);
                this.com_phys_vel_max = PHYS_MAXSPEED(this) * maxspeed_mod;
                this.com_phys_acc_rate = PHYS_ACCELERATE(this) * maxspeed_mod;
+               this.com_phys_friction_air = true;
                sys_phys_simulate(this, dt);
+               this.com_phys_friction_air = false;
        } else if (this.waterlevel >= WATERLEVEL_SWIMMING) {
-               PM_swim(this, maxspeed_mod);
-       } else if (time < this.ladder_time) {
+               this.com_phys_vel_max = PHYS_MAXSPEED(this) * maxspeed_mod;
+               this.com_phys_acc_rate = PHYS_ACCELERATE(this) * maxspeed_mod;
+               this.com_phys_water = true;
+               sys_phys_simulate(this, dt);
+               this.com_phys_water = false;
+               this.jumppadcount = 0;
+       } else if (this.ladder_entity) {
                this.com_phys_friction = PHYS_FRICTION(this);
                this.com_phys_vel_max = PHYS_MAXSPEED(this) * maxspeed_mod;
                this.com_phys_acc_rate = PHYS_ACCELERATE(this) * maxspeed_mod;
                this.com_phys_gravity = '0 0 -1' * PHYS_GRAVITY(this) * dt;
                if (PHYS_ENTGRAVITY(this)) { this.com_phys_gravity *= PHYS_ENTGRAVITY(this); }
                this.com_phys_ladder = true;
+               this.com_phys_friction_air = true;
                sys_phys_simulate(this, dt);
+               this.com_phys_friction_air = false;
                this.com_phys_ladder = false;
                this.com_phys_gravity = '0 0 0';
        } else if (ITEMS_STAT(this) & IT_USING_JETPACK) {
-               PM_jetpack(this, maxspeed_mod);
-       } else if (IS_ONGROUND(this)) {
+               PM_jetpack(this, maxspeed_mod, dt);
+       } else if (IS_ONGROUND(this) && (!IS_ONSLICK(this) || !PHYS_SLICK_APPLYGRAVITY(this))) {
                if (!WAS_ONGROUND(this)) {
                        emit(phys_land, this);
                        if (this.lastground < time - 0.3) {
@@ -121,41 +143,103 @@ void sys_phys_update(entity this, float dt)
                this.com_phys_ground = false;
                this.com_phys_gravity = '0 0 0';
        } else {
-               PM_air(this, buttons_prev, maxspeed_mod);
+               this.com_phys_acc_rate_air = PHYS_AIRACCELERATE(this) * min(maxspeed_mod, 1);
+               this.com_phys_acc_rate_air_stop = PHYS_AIRSTOPACCELERATE(this) * maxspeed_mod;
+               this.com_phys_acc_rate_air_strafe = PHYS_AIRSTRAFEACCELERATE(this) * maxspeed_mod;
+               this.com_phys_vel_max_air_strafe = PHYS_MAXAIRSTRAFESPEED(this) * maxspeed_mod;
+               this.com_phys_vel_max_air = PHYS_MAXAIRSPEED(this) * maxspeed_mod;
+               this.com_phys_vel_max = PHYS_MAXAIRSPEED(this) * min(maxspeed_mod, 1);
+               this.com_phys_air = true;
+               this.com_phys_vel_2d = true;
+               sys_phys_simulate(this, dt);
+               this.com_phys_vel_2d = false;
+               this.com_phys_air = false;
        }
 
-       LABEL(end)
+       sys_phys_postupdate(this);
+}
+
+void sys_phys_postupdate(entity this)
+{
        if (IS_ONGROUND(this)) { this.lastground = time; }
 // conveyors: then break velocity again
-       if (this.conveyor.state) { this.velocity += this.conveyor.movedir; }
+       if (this.conveyor.active) { this.velocity += this.conveyor.movedir; }
        this.lastflags = this.flags;
 
        this.lastclassname = this.classname;
 }
 
+/** for players */
 void sys_phys_simulate(entity this, float dt)
 {
-       const float g = -this.com_phys_gravity.z;
-       if (!this.com_phys_ground) {
+       if (!this.com_phys_ground && !this.com_phys_air) {
                // noclipping
                // flying
                // on a spawnfunc_func_ladder
                // swimming in spawnfunc_func_water
+               // swimming
                UNSET_ONGROUND(this);
 
-               this.velocity_z += g / 2;
-               this.velocity = this.velocity * (1 - dt * this.com_phys_friction);
-               this.velocity_z += g / 2;
+               if (this.com_phys_friction_air) {
+                       const vector g = -this.com_phys_gravity;
+                       this.velocity_z += g.z / 2;
+                       this.velocity = this.velocity * (1 - dt * this.com_phys_friction);
+                       this.velocity_z += g.z / 2;
+               }
+       }
+
+       if (this.com_phys_water) {
+               // water jump only in certain situations
+               // this mimics quakeworld code
+               if (this.com_in_jump && this.waterlevel == WATERLEVEL_SWIMMING && this.velocity_z >= -180 && !this.viewloc && !PHYS_FROZEN(this)) {
+                       vector yawangles = '0 1 0' * this.v_angle.y;
+                       vector forward, right, up;
+                       MAKE_VECTORS(yawangles, forward, right, up);
+                       vector spot = this.origin + 24 * forward;
+                       spot_z += 8;
+                       traceline(spot, spot, MOVE_NOMONSTERS, this);
+                       if (trace_startsolid) {
+                               spot_z += 24;
+                               traceline(spot, spot, MOVE_NOMONSTERS, this);
+                               if (!trace_startsolid) {
+                                       this.velocity = forward * 50;
+                                       this.velocity_z = 310;
+                                       UNSET_ONGROUND(this);
+                                       SET_JUMP_HELD(this);
+                               }
+                       }
+               }
        }
 
-       makevectors(vmul(this.v_angle, (this.com_phys_vel_2d ? '0 1 0' : '1 1 1')));
-       // wishvel = v_forward * this.movement.x + v_right * this.movement.y + v_up * this.movement.z;
-       vector wishvel = v_forward * this.movement.x
-           + v_right * this.movement.y
-           + '0 0 1' * this.movement.z * (this.com_phys_vel_2d ? 0 : 1);
+       vector forward, right, up;
+       MAKE_VECTORS(vmul(this.v_angle, (this.com_phys_vel_2d ? '0 1 0' : '1 1 1')), forward, right, up);
+       // wishvel = forward * PHYS_CS(this).movement.x + right * PHYS_CS(this).movement.y + up * PHYS_CS(this).movement.z;
+       vector wishvel = forward * PHYS_CS(this).movement.x
+           + right * PHYS_CS(this).movement.y
+           + '0 0 1' * PHYS_CS(this).movement.z * (this.com_phys_vel_2d ? 0 : 1);
+       if (this.com_phys_water) {
+               if (PHYS_FROZEN(this))
+               {
+                       if(this.waterlevel >= WATERLEVEL_SUBMERGED && this.velocity.z >= -70) // don't change the speed too abruptally
+                               wishvel = '0 0 160'; // resurface
+                       else if(this.waterlevel >= WATERLEVEL_SWIMMING && this.velocity.z > 0)
+                               wishvel = eZ * 1.3 * min(this.velocity.z, 160); // resurface a bit more above the surface
+               }
+               else
+               {
+                       if (PHYS_INPUT_BUTTON_CROUCH(this)) {
+                               wishvel.z = -PHYS_MAXSPEED(this);
+                       }
+                       if (this.viewloc) {
+                               wishvel.z = -160;    // drift anyway
+                       } else if (wishvel == '0 0 0') {
+                               wishvel = '0 0 -60'; // drift towards bottom
+                       }
+               }
+       }
        if (this.com_phys_ladder) {
                if (this.viewloc) {
-                       wishvel.z = this.oldmovement.x;
+                       wishvel.z = PHYS_CS(this).movement_old.x;
                }
                if (this.ladder_entity.classname == "func_water") {
                        float f = vlen(wishvel);
@@ -181,61 +265,248 @@ void sys_phys_simulate(entity this, float dt)
        const vector wishdir = normalize(wishvel);
        float wishspeed = min(vlen(wishvel), this.com_phys_vel_max);
 
-       if (this.com_phys_ground) {
-               if (IS_DUCKED(this)) { wishspeed *= 0.5; }
-
-               // apply edge friction
-               const float f2 = vlen2(vec2(this.velocity));
-               if (f2 > 0) {
-                       trace_dphitq3surfaceflags = 0;
-                       tracebox(this.origin, this.mins, this.maxs, this.origin - '0 0 1', MOVE_NOMONSTERS, this);
-                       // TODO: apply edge friction
-                       // apply ground friction
-                       const int realfriction = (trace_dphitq3surfaceflags & Q3SURFACEFLAG_SLICK)
-                           ? PHYS_FRICTION_SLICK(this)
-                               : PHYS_FRICTION(this);
-
-                       float f = sqrt(f2);
-                       f = 1 - PHYS_INPUT_TIMELENGTH * realfriction
-                           * ((f < PHYS_STOPSPEED(this)) ? (PHYS_STOPSPEED(this) / f) : 1);
-                       f = max(0, f);
-                       this.velocity *= f;
-                       /*
-                          Mathematical analysis time!
-
-                          Our goal is to invert this mess.
-
-                          For the two cases we get:
-                           v = v0 * (1 - PHYS_INPUT_TIMELENGTH * (PHYS_STOPSPEED(this) / v0) * PHYS_FRICTION(this))
-                             = v0 - PHYS_INPUT_TIMELENGTH * PHYS_STOPSPEED(this) * PHYS_FRICTION(this)
-                           v0 = v + PHYS_INPUT_TIMELENGTH * PHYS_STOPSPEED(this) * PHYS_FRICTION(this)
-                          and
-                           v = v0 * (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION(this))
-                           v0 = v / (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION(this))
-
-                          These cases would be chosen ONLY if:
-                           v0 < PHYS_STOPSPEED(this)
-                           v + PHYS_INPUT_TIMELENGTH * PHYS_STOPSPEED(this) * PHYS_FRICTION(this) < PHYS_STOPSPEED(this)
-                           v < PHYS_STOPSPEED(this) * (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION(this))
-                          and, respectively:
-                           v0 >= PHYS_STOPSPEED(this)
-                           v / (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION(this)) >= PHYS_STOPSPEED(this)
-                           v >= PHYS_STOPSPEED(this) * (1 - PHYS_INPUT_TIMELENGTH * PHYS_FRICTION(this))
-                        */
+       if (this.com_phys_air) {
+               if (!(this.flags & FL_WATERJUMP)) {
+                       // apply air speed limit
+                       float airaccelqw = PHYS_AIRACCEL_QW(this);
+                       float wishspeed0 = wishspeed;
+                       const float maxairspd = this.com_phys_vel_max;
+                       wishspeed = min(wishspeed, maxairspd);
+                       if (IS_DUCKED(this)) {
+                               wishspeed *= 0.5;
+                       }
+                       float airaccel = this.com_phys_acc_rate_air;
+
+                       float accelerating = (this.velocity * wishdir > 0);
+                       float wishspeed2 = wishspeed;
+
+                       // CPM: air control
+                       if (PHYS_AIRSTOPACCELERATE(this)) {
+                               vector curdir = normalize(vec2(this.velocity));
+                               airaccel += (this.com_phys_acc_rate_air_stop - airaccel) * max(0, -(curdir * wishdir));
+                       }
+                       // note that for straight forward jumping:
+                       // step = accel * dt * wishspeed0;
+                       // accel  = bound(0, wishspeed - vel_xy_current, step) * accelqw + step * (1 - accelqw);
+                       // -->
+                       // dv/dt = accel * maxspeed (when slow)
+                       // dv/dt = accel * maxspeed * (1 - accelqw) (when fast)
+                       // log dv/dt = logaccel + logmaxspeed (when slow)
+                       // log dv/dt = logaccel + logmaxspeed + log(1 - accelqw) (when fast)
+                       float strafity = IsMoveInDirection(PHYS_CS(this).movement, -90) + IsMoveInDirection(PHYS_CS(this).movement, +90);  // if one is nonzero, other is always zero
+                       if (PHYS_MAXAIRSTRAFESPEED(this)) {
+                               wishspeed =
+                                   min(wishspeed,
+                                       GeomLerp(this.com_phys_vel_max_air, strafity, this.com_phys_vel_max_air_strafe));
+                       }
+                       if (PHYS_AIRSTRAFEACCELERATE(this)) {
+                               airaccel = GeomLerp(airaccel, strafity, this.com_phys_acc_rate_air_strafe);
+                       }
+                       if (PHYS_AIRSTRAFEACCEL_QW(this)) {
+                               airaccelqw =
+                                   (((strafity > 0.5 ? PHYS_AIRSTRAFEACCEL_QW(this) : PHYS_AIRACCEL_QW(this)) >= 0) ? +1 : -1)
+                                   *
+                                   (1 - GeomLerp(1 - fabs(PHYS_AIRACCEL_QW(this)), strafity, 1 - fabs(PHYS_AIRSTRAFEACCEL_QW(this))));
+                       }
+                       // !CPM
+
+                       if (PHYS_WARSOWBUNNY_TURNACCEL(this) && accelerating && PHYS_CS(this).movement.y == 0 && PHYS_CS(this).movement.x != 0) {
+                               PM_AirAccelerate(this, dt, wishdir, wishspeed2);
+                       } else {
+                               float sidefric = maxairspd ? (PHYS_AIRACCEL_SIDEWAYS_FRICTION(this) / maxairspd) : 0;
+                               PM_Accelerate(this, dt, wishdir, wishspeed, wishspeed0, airaccel, airaccelqw,
+                                       PHYS_AIRACCEL_QW_STRETCHFACTOR(this), sidefric, PHYS_AIRSPEEDLIMIT_NONQW(this));
+                       }
+
+                       if (PHYS_AIRCONTROL(this)) {
+                               CPM_PM_Aircontrol(this, dt, wishdir, wishspeed2);
+                       }
                }
-               const float addspeed = wishspeed - this.velocity * wishdir;
-               if (addspeed > 0) {
-                       const float accelspeed = min(PHYS_ACCELERATE(this) * PHYS_INPUT_TIMELENGTH * wishspeed, addspeed);
-                       this.velocity += accelspeed * wishdir;
+       } else {
+               if (this.com_phys_ground && IS_DUCKED(this)) { wishspeed *= 0.5; }
+               if (this.com_phys_water) {
+                       wishspeed *= 0.7;
+
+                       //      if (!(this.flags & FL_WATERJUMP)) // TODO: use
+                       {
+                               // water friction
+                               float f = 1 - dt * PHYS_FRICTION(this);
+                               f = min(max(0, f), 1);
+                               this.velocity *= f;
+
+                               f = wishspeed - this.velocity * wishdir;
+                               if (f > 0) {
+                                       float accelspeed = min(PHYS_ACCELERATE(this) * dt * wishspeed, f);
+                                       this.velocity += accelspeed * wishdir;
+                               }
+
+                               // holding jump button swims upward slowly
+                               if (this.com_in_jump && !this.viewloc && !PHYS_FROZEN(this)) {
+                                       // was:
+                                       // lava: 50
+                                       // slime: 80
+                                       // water: 100
+                                       // idea: double those
+                                       this.velocity_z = 200;
+                                       if (this.waterlevel >= WATERLEVEL_SUBMERGED) {
+                                               this.velocity_z = PHYS_MAXSPEED(this) * 0.7;
+                                       }
+                               }
+                       }
+                       if (this.viewloc) {
+                               const float addspeed = wishspeed - this.velocity * wishdir;
+                               if (addspeed > 0) {
+                                       const float accelspeed = min(PHYS_ACCELERATE(this) * dt * wishspeed, addspeed);
+                                       this.velocity += accelspeed * wishdir;
+                               }
+                       } else {
+                               // water acceleration
+                               PM_Accelerate(this, dt, wishdir, wishspeed, wishspeed, this.com_phys_acc_rate, 1, 0, 0, 0);
+                       }
+                       return;
+               }
+               if (this.com_phys_ground) {
+                       // apply edge friction
+                       const float f2 = vlen2(vec2(this.velocity));
+                       if (f2 > 0) {
+                               // TODO: apply edge friction
+                               // apply ground friction
+                               const int realfriction = (IS_ONSLICK(this))
+                                   ? PHYS_FRICTION_SLICK(this)
+                                       : PHYS_FRICTION(this);
+
+                               float f = sqrt(f2);
+                               f = 1 - dt * realfriction
+                                   * ((f < PHYS_STOPSPEED(this)) ? (PHYS_STOPSPEED(this) / f) : 1);
+                               f = max(0, f);
+                               this.velocity *= f;
+                               /*
+                                  Mathematical analysis time!
+
+                                  Our goal is to invert this mess.
+
+                                  For the two cases we get:
+                                   v = v0 * (1 - dt * (PHYS_STOPSPEED(this) / v0) * PHYS_FRICTION(this))
+                                     = v0 - dt * PHYS_STOPSPEED(this) * PHYS_FRICTION(this)
+                                   v0 = v + dt * PHYS_STOPSPEED(this) * PHYS_FRICTION(this)
+                                  and
+                                   v = v0 * (1 - dt * PHYS_FRICTION(this))
+                                   v0 = v / (1 - dt * PHYS_FRICTION(this))
+
+                                  These cases would be chosen ONLY if:
+                                   v0 < PHYS_STOPSPEED(this)
+                                   v + dt * PHYS_STOPSPEED(this) * PHYS_FRICTION(this) < PHYS_STOPSPEED(this)
+                                   v < PHYS_STOPSPEED(this) * (1 - dt * PHYS_FRICTION(this))
+                                  and, respectively:
+                                   v0 >= PHYS_STOPSPEED(this)
+                                   v / (1 - dt * PHYS_FRICTION(this)) >= PHYS_STOPSPEED(this)
+                                   v >= PHYS_STOPSPEED(this) * (1 - dt * PHYS_FRICTION(this))
+                                */
+                       }
+                       const float addspeed = wishspeed - this.velocity * wishdir;
+                       if (addspeed > 0) {
+                               const float accelspeed = min(PHYS_ACCELERATE(this) * dt * wishspeed, addspeed);
+                               this.velocity += accelspeed * wishdir;
+                       }
+                       return;
                }
-               if (IS_CSQC && vdist(this.velocity, >, 0)) {
-                       PM_ClientMovement_Move(this);
+
+               if (!(this.flags & FL_WATERJUMP)) {
+                       PM_Accelerate(this, dt, wishdir, wishspeed, wishspeed, this.com_phys_acc_rate, 1, 0, 0, 0);
                }
-               return;
        }
+}
+
+.entity groundentity;
+/** for other entities */
+void sys_phys_simulate_simple(entity this, float dt)
+{
+       vector mn = this.mins;
+       vector mx = this.maxs;
+
+       vector g = '0 0 0';
+       if (this.com_phys_gravity_factor && !g) g = '0 0 -1' * PHYS_GRAVITY(NULL);
+
+       vector acc = this.com_phys_acc;
+       vector vel = this.com_phys_vel;
+       vector pos = this.com_phys_pos;
+
+       // SV_Physics_Toss
 
-       if (IS_CSQC || time >= PHYS_TELEPORT_TIME(this)) {
-               PM_Accelerate(this, wishdir, wishspeed, wishspeed, this.com_phys_acc_rate, 1, 0, 0, 0);
+       vel += g * dt;
+
+       this.angles += dt * this.avelocity;
+       float movetime = dt;
+       for (int i = 0; i < MAX_CLIP_PLANES && movetime > 0; i++) {
+               vector push = vel * movetime;
+               vector p0 = pos;
+               vector p1 = p0 + push;
+               // SV_PushEntity
+               tracebox(p0, mn, mx, p1, MOVE_NORMAL, this);
+               if (!trace_startsolid) {
+                       bool hit = trace_fraction < 1;
+                       pos = trace_endpos;
+                       entity ent = trace_ent;
+                       // SV_LinkEdict_TouchAreaGrid
+                       if (this.solid != SOLID_NOT) {
+                               FOREACH_ENTITY_RADIUS_ORDERED(0.5 * (this.absmin + this.absmax), 0.5 * vlen(this.absmax - this.absmin), true, {
+                                       if (it.solid != SOLID_TRIGGER || it == this) continue;
+                                       if (gettouch(it) && boxesoverlap(it.absmin, it.absmax, this.absmin, this.absmax)) {
+                                           // SV_LinkEdict_TouchAreaGrid_Call
+                                           trace_allsolid = false;
+                                           trace_startsolid = false;
+                                           trace_fraction = 1;
+                                           trace_inwater = false;
+                                           trace_inopen = true;
+                                           trace_endpos = it.origin;
+                                           trace_plane_normal = '0 0 1';
+                                           trace_plane_dist = 0;
+                                           trace_ent = this;
+                                           trace_dpstartcontents = 0;
+                                           trace_dphitcontents = 0;
+                                           trace_dphitq3surfaceflags = 0;
+                                           trace_dphittexturename = string_null;
+                                           gettouch(it)(this, it);
+                                           vel = this.velocity;
+                                       }
+                               });
+                       }
+                       if (hit && this.solid >= SOLID_TRIGGER && (!IS_ONGROUND(this) || this.groundentity != ent)) {
+                               // SV_Impact (ent, trace);
+                               tracebox(p0, mn, mx, p1, MOVE_NORMAL, this);
+                               void(entity, entity) touched = gettouch(this);
+                               if (touched && this.solid != SOLID_NOT) {
+                                       touched(ent, this);
+                               }
+                               void(entity, entity) touched2 = gettouch(ent);
+                               if (this && ent && touched2 && ent.solid != SOLID_NOT) {
+                                       trace_endpos = ent.origin;
+                                       trace_plane_normal *= -1;
+                                       trace_plane_dist *= -1;
+                                       trace_ent = this;
+                                       trace_dpstartcontents = 0;
+                                       trace_dphitcontents = 0;
+                                       trace_dphitq3surfaceflags = 0;
+                                       trace_dphittexturename = string_null;
+                                       touched2(this, ent);
+                               }
+                       }
+               }
+               // end SV_PushEntity
+               if (wasfreed(this)) { return; }
+               tracebox(p0, mn, mx, p1, MOVE_NORMAL, this);
+               if (trace_fraction == 1) { break; }
+               movetime *= 1 - min(1, trace_fraction);
+               ClipVelocity(vel, trace_plane_normal, vel, 1);
        }
-       PM_ClientMovement_Move(this);
+
+       this.com_phys_acc = acc;
+       this.com_phys_vel = vel;
+       this.com_phys_pos = pos;
+       setorigin(this, this.com_phys_pos);
+}
+
+void sys_phys_update_single(entity this)
+{
+       sys_phys_simulate_simple(this, frametime);
 }