]> git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - sv_phys.c
properly handle the case that the touch fucntion teleported the player
[xonotic/darkplaces.git] / sv_phys.c
index 0dd67604e60bad370824eed14d044ab9fcdf5cf5..ef3cb9a5b661c71045c52dfcc435a5bee33bf6d4 100644 (file)
--- a/sv_phys.c
+++ b/sv_phys.c
@@ -39,44 +39,10 @@ solid_edge items only clip against bsp models.
 
 */
 
-cvar_t sv_friction = {CVAR_NOTIFY, "sv_friction","4", "how fast you slow down"};
-cvar_t sv_waterfriction = {CVAR_NOTIFY, "sv_waterfriction","-1", "how fast you slow down, if less than 0 the sv_friction variable is used instead"};
-cvar_t sv_stopspeed = {CVAR_NOTIFY, "sv_stopspeed","100", "how fast you come to a complete stop"};
-cvar_t sv_gravity = {CVAR_NOTIFY, "sv_gravity","800", "how fast you fall (512 = roughly earth gravity)"};
-cvar_t sv_maxvelocity = {CVAR_NOTIFY, "sv_maxvelocity","2000", "universal speed limit on all entities"};
-cvar_t sv_nostep = {CVAR_NOTIFY, "sv_nostep","0", "prevents MOVETYPE_STEP entities (monsters) from moving"};
-cvar_t sv_stepheight = {CVAR_NOTIFY, "sv_stepheight", "18", "how high you can step up (TW_SV_STEPCONTROL extension)"};
-cvar_t sv_jumpstep = {CVAR_NOTIFY, "sv_jumpstep", "0", "whether you can step up while jumping (sv_gameplayfix_stepwhilejumping must also be 1)"};
-cvar_t sv_wallfriction = {CVAR_NOTIFY, "sv_wallfriction", "1", "how much you slow down when sliding along a wall"};
-cvar_t sv_newflymove = {CVAR_NOTIFY, "sv_newflymove", "0", "enables simpler/buggier player physics (not recommended)"};
-cvar_t sv_freezenonclients = {CVAR_NOTIFY, "sv_freezenonclients", "0", "freezes time, except for players, allowing you to walk around and take screenshots of explosions"};
-cvar_t sv_playerphysicsqc = {CVAR_NOTIFY, "sv_playerphysicsqc", "1", "enables QuakeC function to override player physics"};
-cvar_t sv_debugmove = {CVAR_NOTIFY, "sv_debugmove", "0", "disables collision detection optimizations for debugging purposes"};
-
-cvar_t sv_sound_watersplash = {0, "sv_sound_watersplash", "misc/h2ohit1.wav", "sound to play when MOVETYPE_FLY/TOSS/BOUNCE/STEP entity enters or leaves water (empty cvar disables the sound)"};
-cvar_t sv_sound_land = {0, "sv_sound_land", "demon/dland2.wav", "sound to play when MOVETYPE_STEP entity hits the ground at high speed (empty cvar disables the sound)"};
-
-// TODO: move this extern to server.h
-extern cvar_t sv_clmovement_waitforinput;
-
 #define        MOVE_EPSILON    0.01
 
 void SV_Physics_Toss (prvm_edict_t *ent);
 
-void SV_Phys_Init (void)
-{
-       Cvar_RegisterVariable(&sv_stepheight);
-       Cvar_RegisterVariable(&sv_jumpstep);
-       Cvar_RegisterVariable(&sv_wallfriction);
-       Cvar_RegisterVariable(&sv_newflymove);
-       Cvar_RegisterVariable(&sv_freezenonclients);
-       Cvar_RegisterVariable(&sv_playerphysicsqc);
-       Cvar_RegisterVariable(&sv_debugmove);
-
-       Cvar_RegisterVariable(&sv_sound_watersplash);
-       Cvar_RegisterVariable(&sv_sound_land);
-}
-
 /*
 ===============================================================================
 
@@ -141,7 +107,7 @@ trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const
        // matrices to transform into/out of other entity's space
        matrix4x4_t matrix, imatrix;
        // model of other entity
-       model_t *model;
+       dp_model_t *model;
        // list of entities to test for collisions
        int numtouchedicts;
        prvm_edict_t *touchedicts[MAX_EDICTS];
@@ -259,9 +225,9 @@ trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const
                        Matrix4x4_CreateTranslate(&matrix, touch->fields.server->origin[0], touch->fields.server->origin[1], touch->fields.server->origin[2]);
                Matrix4x4_Invert_Simple(&imatrix, &matrix);
                if ((int)touch->fields.server->flags & FL_MONSTER)
-                       Collision_ClipToGenericEntity(&trace, model, touch->fields.server->frame, touch->fields.server->mins, touch->fields.server->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipend, hitsupercontentsmask);
+                       Collision_ClipToGenericEntity(&trace, model, (int) touch->fields.server->frame, touch->fields.server->mins, touch->fields.server->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipend, hitsupercontentsmask);
                else
-                       Collision_ClipToGenericEntity(&trace, model, touch->fields.server->frame, touch->fields.server->mins, touch->fields.server->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask);
+                       Collision_ClipToGenericEntity(&trace, model, (int) touch->fields.server->frame, touch->fields.server->mins, touch->fields.server->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask);
 
                Collision_CombineTraces(&cliptrace, &trace, (void *)touch, touch->fields.server->solid == SOLID_BSP);
        }
@@ -289,6 +255,63 @@ trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const
 }
 #endif
 
+int SV_PointSuperContents(const vec3_t point)
+{
+       int supercontents = 0;
+       int i;
+       prvm_edict_t *touch;
+       vec3_t transformed;
+       // matrices to transform into/out of other entity's space
+       matrix4x4_t matrix, imatrix;
+       // model of other entity
+       dp_model_t *model;
+       unsigned int modelindex;
+       int frame;
+       // list of entities to test for collisions
+       int numtouchedicts;
+       prvm_edict_t *touchedicts[MAX_EDICTS];
+
+       // get world supercontents at this point
+       if (sv.worldmodel && sv.worldmodel->PointSuperContents)
+               supercontents = sv.worldmodel->PointSuperContents(sv.worldmodel, 0, point);
+
+       // if sv_gameplayfix_swiminbmodels is off we're done
+       if (!sv_gameplayfix_swiminbmodels.integer)
+               return supercontents;
+
+       // get list of entities at this point
+       numtouchedicts = World_EntitiesInBox(&sv.world, point, point, MAX_EDICTS, touchedicts);
+       if (numtouchedicts > MAX_EDICTS)
+       {
+               // this never happens
+               Con_Printf("SV_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
+               numtouchedicts = MAX_EDICTS;
+       }
+       for (i = 0;i < numtouchedicts;i++)
+       {
+               touch = touchedicts[i];
+
+               // we only care about SOLID_BSP for pointcontents
+               if (touch->fields.server->solid != SOLID_BSP)
+                       continue;
+
+               // might interact, so do an exact clip
+               modelindex = (unsigned int)touch->fields.server->modelindex;
+               if (modelindex >= MAX_MODELS)
+                       continue;
+               model = sv.models[(int)touch->fields.server->modelindex];
+               if (!model || !model->PointSuperContents)
+                       continue;
+               Matrix4x4_CreateFromQuakeEntity(&matrix, touch->fields.server->origin[0], touch->fields.server->origin[1], touch->fields.server->origin[2], touch->fields.server->angles[0], touch->fields.server->angles[1], touch->fields.server->angles[2], 1);
+               Matrix4x4_Invert_Simple(&imatrix, &matrix);
+               Matrix4x4_Transform(&imatrix, point, transformed);
+               frame = (int)touch->fields.server->frame;
+               supercontents |= model->PointSuperContents(model, bound(0, frame, (model->numframes - 1)), transformed);
+       }
+
+       return supercontents;
+}
+
 /*
 ===============================================================================
 
@@ -303,7 +326,7 @@ void SV_LinkEdict_TouchAreaGrid(prvm_edict_t *ent)
        prvm_edict_t *touch, *touchedicts[MAX_EDICTS];
 
        // build a list of edicts to touch, because the link loop can be corrupted
-       // by SV_IncreaseEdicts called during touch functions
+       // by IncreaseEdicts called during touch functions
        numtouchedicts = World_EntitiesInBox(&sv.world, ent->priv.server->areamins, ent->priv.server->areamaxs, MAX_EDICTS, touchedicts);
        if (numtouchedicts > MAX_EDICTS)
        {
@@ -355,7 +378,7 @@ SV_LinkEdict
 */
 void SV_LinkEdict (prvm_edict_t *ent, qboolean touch_triggers)
 {
-       model_t *model;
+       dp_model_t *model;
        vec3_t mins, maxs;
 
        if (ent == prog->edicts)
@@ -369,7 +392,7 @@ void SV_LinkEdict (prvm_edict_t *ent, qboolean touch_triggers)
        if (ent->fields.server->solid == SOLID_BSP)
        {
                int modelindex = (int)ent->fields.server->modelindex;
-               if (modelindex < 0 || modelindex > MAX_MODELS)
+               if (modelindex < 0 || modelindex >= MAX_MODELS)
                {
                        Con_Printf("edict %i: SOLID_BSP with invalid modelindex!\n", PRVM_NUM_FOR_EDICT(ent));
                        modelindex = 0;
@@ -377,7 +400,7 @@ void SV_LinkEdict (prvm_edict_t *ent, qboolean touch_triggers)
                model = sv.models[modelindex];
                if (model != NULL)
                {
-                       if (!model->TraceBox)
+                       if (!model->TraceBox && developer.integer >= 1)
                                Con_Printf("edict %i: SOLID_BSP with non-collidable model\n", PRVM_NUM_FOR_EDICT(ent));
 
                        if (ent->fields.server->angles[0] || ent->fields.server->angles[2] || ent->fields.server->avelocity[0] || ent->fields.server->avelocity[2])
@@ -459,9 +482,12 @@ SV_TestEntityPosition
 returns true if the entity is in solid currently
 ============
 */
-static int SV_TestEntityPosition (prvm_edict_t *ent)
+static int SV_TestEntityPosition (prvm_edict_t *ent, vec3_t offset)
 {
-       trace_t trace = SV_Move (ent->fields.server->origin, ent->fields.server->mins, ent->fields.server->maxs, ent->fields.server->origin, MOVE_NOMONSTERS, ent, SUPERCONTENTS_SOLID);
+       vec3_t org;
+       trace_t trace;
+       VectorAdd(ent->fields.server->origin, offset, org);
+       trace = SV_Move (org, ent->fields.server->mins, ent->fields.server->maxs, ent->fields.server->origin, MOVE_NOMONSTERS, ent, SUPERCONTENTS_SOLID);
        if (trace.startsupercontents & SUPERCONTENTS_SOLID)
                return true;
        else
@@ -471,10 +497,11 @@ static int SV_TestEntityPosition (prvm_edict_t *ent)
                        // q1bsp/hlbsp use hulls and if the entity does not exactly match
                        // a hull size it is incorrectly tested, so this code tries to
                        // 'fix' it slightly...
+                       // FIXME: this breaks entities larger than the hull size
                        int i;
                        vec3_t v, m1, m2, s;
-                       VectorAdd(ent->fields.server->origin, ent->fields.server->mins, m1);
-                       VectorAdd(ent->fields.server->origin, ent->fields.server->maxs, m2);
+                       VectorAdd(org, ent->fields.server->mins, m1);
+                       VectorAdd(org, ent->fields.server->maxs, m2);
                        VectorSubtract(m2, m1, s);
 #define EPSILON (1.0f / 32.0f)
                        if (s[0] >= EPSILON*2) {m1[0] += EPSILON;m2[0] -= EPSILON;}
@@ -489,8 +516,24 @@ static int SV_TestEntityPosition (prvm_edict_t *ent)
                                        return true;
                        }
                }
-               return false;
        }
+       // if the trace found a better position for the entity, move it there
+       if (VectorDistance2(trace.endpos, ent->fields.server->origin) >= 0.0001)
+       {
+#if 0
+               // please switch back to this code when trace.endpos sometimes being in solid bug is fixed
+               VectorCopy(trace.endpos, ent->fields.server->origin);
+#else
+               // verify if the endpos is REALLY outside solid
+               VectorCopy(trace.endpos, org);
+               trace = SV_Move (org, ent->fields.server->mins, ent->fields.server->maxs, org, MOVE_NOMONSTERS, ent, SUPERCONTENTS_SOLID);
+               if(trace.startsolid)
+                       Con_Printf("SV_TestEntityPosition: trace.endpos detected to be in solid. NOT using it.\n");
+               else
+                       VectorCopy(org, ent->fields.server->origin);
+#endif
+       }
+       return false;
 }
 
 /*
@@ -515,7 +558,7 @@ void SV_CheckAllEnts (void)
                 || check->fields.server->movetype == MOVETYPE_NOCLIP)
                        continue;
 
-               if (SV_TestEntityPosition (check))
+               if (SV_TestEntityPosition (check, vec3_origin))
                        Con_Print("entity in invalid position\n");
        }
 }
@@ -550,6 +593,8 @@ int SV_CheckContentsTransition(prvm_edict_t *ent, const int nContents)
                                PRVM_G_FLOAT(OFS_PARM0) = ent->fields.server->watertype;
                                // New Contents
                                PRVM_G_FLOAT(OFS_PARM1) = nContents;
+                               // Assign Self
+                               prog->globals.server->self = PRVM_EDICT_TO_PROG(ent);
                        // Execute VM Function
                        PRVM_ExecuteProgram(contentstransition->function, "contentstransition: NULL function");
                }
@@ -577,12 +622,12 @@ void SV_CheckVelocity (prvm_edict_t *ent)
        {
                if (IS_NAN(ent->fields.server->velocity[i]))
                {
-                       Con_Printf("Got a NaN velocity on %s\n", PRVM_GetString(ent->fields.server->classname));
+                       Con_Printf("Got a NaN velocity on entity #%i (%s)\n", PRVM_NUM_FOR_EDICT(ent), PRVM_GetString(ent->fields.server->classname));
                        ent->fields.server->velocity[i] = 0;
                }
                if (IS_NAN(ent->fields.server->origin[i]))
                {
-                       Con_Printf("Got a NaN origin on %s\n", PRVM_GetString(ent->fields.server->classname));
+                       Con_Printf("Got a NaN origin on entity #%i (%s)\n", PRVM_NUM_FOR_EDICT(ent), PRVM_GetString(ent->fields.server->classname));
                        ent->fields.server->origin[i] = 0;
                }
        }
@@ -610,22 +655,27 @@ Returns false if the entity removed itself.
 */
 qboolean SV_RunThink (prvm_edict_t *ent)
 {
-       float thinktime;
-
-       thinktime = ent->fields.server->nextthink;
-       if (thinktime <= 0 || thinktime > sv.time + sv.frametime)
-               return true;
+       int iterations;
 
        // don't let things stay in the past.
        // it is possible to start that way by a trigger with a local time.
-       if (thinktime < sv.time)
-               thinktime = sv.time;
+       if (ent->fields.server->nextthink <= 0 || ent->fields.server->nextthink > sv.time + sv.frametime)
+               return true;
 
-       ent->fields.server->nextthink = 0;
-       prog->globals.server->time = thinktime;
-       prog->globals.server->self = PRVM_EDICT_TO_PROG(ent);
-       prog->globals.server->other = PRVM_EDICT_TO_PROG(prog->edicts);
-       PRVM_ExecuteProgram (ent->fields.server->think, "QC function self.think is missing");
+       for (iterations = 0;iterations < 128  && !ent->priv.server->free;iterations++)
+       {
+               prog->globals.server->time = max(sv.time, ent->fields.server->nextthink);
+               ent->fields.server->nextthink = 0;
+               prog->globals.server->self = PRVM_EDICT_TO_PROG(ent);
+               prog->globals.server->other = PRVM_EDICT_TO_PROG(prog->edicts);
+               PRVM_ExecuteProgram (ent->fields.server->think, "QC function self.think is missing");
+               // mods often set nextthink to time to cause a think every frame,
+               // we don't want to loop in that case, so exit if the new nextthink is
+               // <= the time the qc was told, also exit if it is past the end of the
+               // frame
+               if (ent->fields.server->nextthink <= prog->globals.server->time || ent->fields.server->nextthink > sv.time + sv.frametime || !sv_gameplayfix_multiplethinksperframe.integer)
+                       break;
+       }
        return !ent->priv.server->free;
 }
 
@@ -637,14 +687,17 @@ Two entities have touched, so run their touch functions
 ==================
 */
 extern void VM_SetTraceGlobals(const trace_t *trace);
+extern sizebuf_t vm_tempstringsbuf;
 void SV_Impact (prvm_edict_t *e1, trace_t *trace)
 {
+       int restorevm_tempstringsbuf_cursize;
        int old_self, old_other;
        prvm_edict_t *e2 = (prvm_edict_t *)trace->ent;
        prvm_eval_t *val;
 
        old_self = prog->globals.server->self;
        old_other = prog->globals.server->other;
+       restorevm_tempstringsbuf_cursize = vm_tempstringsbuf.cursize;
 
        VM_SetTraceGlobals(trace);
 
@@ -677,6 +730,7 @@ void SV_Impact (prvm_edict_t *e1, trace_t *trace)
 
        prog->globals.server->self = old_self;
        prog->globals.server->other = old_other;
+       vm_tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
 }
 
 
@@ -712,20 +766,40 @@ Returns the clipflags if the velocity was modified (hit something solid)
 1 = floor
 2 = wall / step
 4 = dead stop
+8 = teleported by touch method
 If stepnormal is not NULL, the plane normal of any vertical wall hit will be stored
 ============
 */
+static float SV_Gravity (prvm_edict_t *ent);
+static trace_t SV_PushEntity (prvm_edict_t *ent, vec3_t push, qboolean failonbmodelstartsolid, qboolean dolink);
 // LordHavoc: increased from 5 to 32
 #define MAX_CLIP_PLANES 32
-int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal, int hitsupercontentsmask)
+static int SV_FlyMove (prvm_edict_t *ent, float time, qboolean applygravity, float *stepnormal, int hitsupercontentsmask)
 {
        int blocked, bumpcount;
-       int i, j, impact, numplanes;
-       float d, time_left;
-       vec3_t dir, end, planes[MAX_CLIP_PLANES], primal_velocity, original_velocity, new_velocity;
+       int i, j, numplanes;
+       float d, time_left, gravity;
+       vec3_t dir, push, planes[MAX_CLIP_PLANES], primal_velocity, original_velocity, new_velocity;
+#if 0
+       vec3_t end;
+#endif
        trace_t trace;
        if (time <= 0)
                return 0;
+       gravity = 0;
+       if (applygravity)
+       {
+               if (sv_gameplayfix_gravityunaffectedbyticrate.integer)
+               {
+                       gravity = SV_Gravity(ent) * 0.5f;
+                       ent->fields.server->velocity[2] -= gravity;
+               }
+               else
+               {
+                       applygravity = false;
+                       ent->fields.server->velocity[2] -= SV_Gravity(ent);
+               }
+       }
        blocked = 0;
        VectorCopy(ent->fields.server->velocity, original_velocity);
        VectorCopy(ent->fields.server->velocity, primal_velocity);
@@ -736,8 +810,21 @@ int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal, int hitsuperco
                if (!ent->fields.server->velocity[0] && !ent->fields.server->velocity[1] && !ent->fields.server->velocity[2])
                        break;
 
-               VectorMA(ent->fields.server->origin, time_left, ent->fields.server->velocity, end);
-               trace = SV_Move(ent->fields.server->origin, ent->fields.server->mins, ent->fields.server->maxs, end, MOVE_NORMAL, ent, hitsupercontentsmask);
+               VectorScale(ent->fields.server->velocity, time_left, push);
+#if 0
+               VectorAdd(ent->fields.server->origin, push, end);
+#endif
+               trace = SV_PushEntity(ent, push, false, false); // the caller calls SV_LinkEntity on the own later
+
+               VectorCopy(trace.endpos, push); // convert to float for comparing
+               if(!VectorCompare(push, ent->fields.server->origin))
+               {
+                       // we got teleported by a touch function
+                       // let's abort the move
+                       blocked |= 8;
+                       break;
+               }
+
 #if 0
                //if (trace.fraction < 0.002)
                {
@@ -796,27 +883,21 @@ int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal, int hitsuperco
                }
 #endif
 
-               // break if it moved the entire distance
                if (trace.fraction == 1)
-               {
-                       VectorCopy(trace.endpos, ent->fields.server->origin);
                        break;
-               }
-
-               if (!trace.ent)
-               {
-                       Con_Printf ("SV_FlyMove: !trace.ent");
-                       trace.ent = prog->edicts;
-               }
-
-               impact = !((int) ent->fields.server->flags & FL_ONGROUND) || ent->fields.server->groundentity != PRVM_EDICT_TO_PROG(trace.ent);
-
                if (trace.plane.normal[2])
                {
                        if (trace.plane.normal[2] > 0.7)
                        {
                                // floor
                                blocked |= 1;
+
+                               if (!trace.ent)
+                               {
+                                       Con_Printf ("SV_FlyMove: !trace.ent");
+                                       trace.ent = prog->edicts;
+                               }
+
                                ent->fields.server->flags = (int)ent->fields.server->flags | FL_ONGROUND;
                                ent->fields.server->groundentity = PRVM_EDICT_TO_PROG(trace.ent);
                        }
@@ -829,25 +910,13 @@ int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal, int hitsuperco
                        if (stepnormal)
                                VectorCopy(trace.plane.normal, stepnormal);
                }
-
                if (trace.fraction >= 0.001)
                {
                        // actually covered some distance
-                       VectorCopy(trace.endpos, ent->fields.server->origin);
                        VectorCopy(ent->fields.server->velocity, original_velocity);
                        numplanes = 0;
                }
 
-               // run the impact function
-               if (impact)
-               {
-                       SV_Impact(ent, &trace);
-
-                       // break if removed by the impact function
-                       if (ent->priv.server->free)
-                               break;
-               }
-
                time_left *= 1 - trace.fraction;
 
                // clipped to another plane
@@ -937,18 +1006,20 @@ int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal, int hitsuperco
        */
 
        // LordHavoc: this came from QW and allows you to get out of water more easily
-       if (sv_gameplayfix_qwplayerphysics.integer && ((int)ent->fields.server->flags & FL_WATERJUMP))
+       if (sv_gameplayfix_easierwaterjump.integer && ((int)ent->fields.server->flags & FL_WATERJUMP) && !(blocked & 8))
                VectorCopy(primal_velocity, ent->fields.server->velocity);
+       if (applygravity && !((int)ent->fields.server->flags & FL_ONGROUND))
+               ent->fields.server->velocity[2] -= gravity;
        return blocked;
 }
 
 /*
 ============
-SV_AddGravity
+SV_Gravity
 
 ============
 */
-void SV_AddGravity (prvm_edict_t *ent)
+static float SV_Gravity (prvm_edict_t *ent)
 {
        float ent_gravity;
        prvm_eval_t *val;
@@ -958,7 +1029,7 @@ void SV_AddGravity (prvm_edict_t *ent)
                ent_gravity = val->_float;
        else
                ent_gravity = 1.0;
-       ent->fields.server->velocity[2] -= ent_gravity * sv_gravity.value * sv.frametime;
+       return ent_gravity * sv_gravity.value * sv.frametime;
 }
 
 
@@ -977,11 +1048,12 @@ SV_PushEntity
 Does not change the entities velocity at all
 ============
 */
-static trace_t SV_PushEntity (prvm_edict_t *ent, vec3_t push, qboolean failonbmodelstartsolid)
+static trace_t SV_PushEntity (prvm_edict_t *ent, vec3_t push, qboolean failonbmodelstartsolid, qboolean dolink)
 {
        int type;
        trace_t trace;
        vec3_t end;
+       qboolean impact;
 
        VectorAdd (ent->fields.server->origin, push, end);
 
@@ -997,10 +1069,17 @@ static trace_t SV_PushEntity (prvm_edict_t *ent, vec3_t push, qboolean failonbmo
                return trace;
 
        VectorCopy (trace.endpos, ent->fields.server->origin);
-       SV_LinkEdict (ent, true);
 
-       if (ent->fields.server->solid >= SOLID_TRIGGER && trace.ent && (!((int)ent->fields.server->flags & FL_ONGROUND) || ent->fields.server->groundentity != PRVM_EDICT_TO_PROG(trace.ent)))
+       impact = (ent->fields.server->solid >= SOLID_TRIGGER && trace.ent && (!((int)ent->fields.server->flags & FL_ONGROUND) || ent->fields.server->groundentity != PRVM_EDICT_TO_PROG(trace.ent)));
+
+       if(impact)
+       {
+               SV_LinkEdict (ent, dolink);
                SV_Impact (ent, &trace);
+       }
+       else if(dolink)
+               SV_LinkEdict (ent, true);
+
        return trace;
 }
 
@@ -1014,14 +1093,18 @@ SV_PushMove
 void SV_PushMove (prvm_edict_t *pusher, float movetime)
 {
        int i, e, index;
+       int pusherowner, pusherprog;
+       int checkcontents;
+       qboolean rotated;
        float savesolid, movetime2, pushltime;
        vec3_t mins, maxs, move, move1, moveangle, pushorig, pushang, a, forward, left, up, org;
        int num_moved;
        int numcheckentities;
        static prvm_edict_t *checkentities[MAX_EDICTS];
-       model_t *pushermodel;
+       dp_model_t *pushermodel;
        trace_t trace;
        matrix4x4_t pusherfinalmatrix, pusherfinalimatrix;
+       unsigned short moved_edicts[MAX_EDICTS];
 
        if (!pusher->fields.server->velocity[0] && !pusher->fields.server->velocity[1] && !pusher->fields.server->velocity[2] && !pusher->fields.server->avelocity[0] && !pusher->fields.server->avelocity[1] && !pusher->fields.server->avelocity[2])
        {
@@ -1059,6 +1142,10 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                return;
        }
        pushermodel = sv.models[index];
+       pusherowner = pusher->fields.server->owner;
+       pusherprog = PRVM_EDICT_TO_PROG(pusher);
+
+       rotated = VectorLength2(pusher->fields.server->angles) + VectorLength2(pusher->fields.server->avelocity) > 0;
 
        movetime2 = movetime;
        VectorScale(pusher->fields.server->velocity, movetime2, move1);
@@ -1148,18 +1235,34 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                 || check->fields.server->movetype == MOVETYPE_FAKEPUSH)
                        continue;
 
+               if (check->fields.server->owner == pusherprog)
+                       continue;
+
+               if (pusherowner == PRVM_EDICT_TO_PROG(check))
+                       continue;
+
+               //Con_Printf("%i %s ", PRVM_NUM_FOR_EDICT(check), PRVM_GetString(check->fields.server->classname));
+
+               // tell any MOVETYPE_STEP entity that it may need to check for water transitions
+               check->priv.server->waterposition_forceupdate = true;
+
+               checkcontents = SV_GenericHitSuperContentsMask(check);
+
                // if the entity is standing on the pusher, it will definitely be moved
                // if the entity is not standing on the pusher, but is in the pusher's
                // final position, move it
                if (!((int)check->fields.server->flags & FL_ONGROUND) || PRVM_PROG_TO_EDICT(check->fields.server->groundentity) != pusher)
                {
-                       Collision_ClipToGenericEntity(&trace, pushermodel, pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY);
+                       Collision_ClipToGenericEntity(&trace, pushermodel, (int) pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, checkcontents);
+                       //trace = SV_Move(check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, MOVE_NOMONSTERS, check, checkcontents);
                        if (!trace.startsolid)
+                       {
+                               //Con_Printf("- not in solid\n");
                                continue;
+                       }
                }
 
-
-               if (forward[0] != 1 || left[1] != 1) // quick way to check if any rotation is used
+               if (rotated)
                {
                        vec3_t org2;
                        VectorSubtract (check->fields.server->origin, pusher->fields.server->origin, org);
@@ -1172,25 +1275,28 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                else
                        VectorCopy (move1, move);
 
+               //Con_Printf("- pushing %f %f %f\n", move[0], move[1], move[2]);
+
                VectorCopy (check->fields.server->origin, check->priv.server->moved_from);
                VectorCopy (check->fields.server->angles, check->priv.server->moved_fromangles);
-               sv.moved_edicts[num_moved++] = check;
+               moved_edicts[num_moved++] = PRVM_NUM_FOR_EDICT(check);
 
                // try moving the contacted entity
                pusher->fields.server->solid = SOLID_NOT;
-               trace = SV_PushEntity (check, move, true);
+               trace = SV_PushEntity (check, move, true, true);
                // FIXME: turn players specially
                check->fields.server->angles[1] += trace.fraction * moveangle[1];
                pusher->fields.server->solid = savesolid; // was SOLID_BSP
                //Con_Printf("%s:%d frac %f startsolid %d bmodelstartsolid %d allsolid %d\n", __FILE__, __LINE__, trace.fraction, trace.startsolid, trace.bmodelstartsolid, trace.allsolid);
 
-               // this check is for items riding platforms that are passing under (or
-               // through) walls intended to knock the items off
-               if (trace.fraction < 1 && check->fields.server->movetype != MOVETYPE_WALK)
+               // this trace.fraction < 1 check causes items to fall off of pushers
+               // if they pass under or through a wall
+               // the groundentity check causes items to fall off of ledges
+               if (check->fields.server->movetype != MOVETYPE_WALK && (trace.fraction < 1 || PRVM_PROG_TO_EDICT(check->fields.server->groundentity) != pusher))
                        check->fields.server->flags = (int)check->fields.server->flags & ~FL_ONGROUND;
 
                // if it is still inside the pusher, block
-               Collision_ClipToGenericEntity(&trace, pushermodel, pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY);
+               Collision_ClipToGenericEntity(&trace, pushermodel, (int) pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, checkcontents);
                if (trace.startsolid)
                {
                        // try moving the contacted entity a tiny bit further to account for precision errors
@@ -1199,9 +1305,9 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                        VectorScale(move, 1.1, move2);
                        VectorCopy (check->priv.server->moved_from, check->fields.server->origin);
                        VectorCopy (check->priv.server->moved_fromangles, check->fields.server->angles);
-                       SV_PushEntity (check, move2, true);
+                       SV_PushEntity (check, move2, true, true);
                        pusher->fields.server->solid = savesolid;
-                       Collision_ClipToGenericEntity(&trace, pushermodel, pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY);
+                       Collision_ClipToGenericEntity(&trace, pushermodel, (int) pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, checkcontents);
                        if (trace.startsolid)
                        {
                                // try moving the contacted entity a tiny bit less to account for precision errors
@@ -1209,9 +1315,9 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                                VectorScale(move, 0.9, move2);
                                VectorCopy (check->priv.server->moved_from, check->fields.server->origin);
                                VectorCopy (check->priv.server->moved_fromangles, check->fields.server->angles);
-                               SV_PushEntity (check, move2, true);
+                               SV_PushEntity (check, move2, true, true);
                                pusher->fields.server->solid = savesolid;
-                               Collision_ClipToGenericEntity(&trace, pushermodel, pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY);
+                               Collision_ClipToGenericEntity(&trace, pushermodel, (int) pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, checkcontents);
                                if (trace.startsolid)
                                {
                                        // still inside pusher, so it's really blocked
@@ -1235,7 +1341,7 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                                        // move back any entities we already moved
                                        for (i = 0;i < num_moved;i++)
                                        {
-                                               prvm_edict_t *ed = sv.moved_edicts[i];
+                                               prvm_edict_t *ed = PRVM_EDICT_NUM(moved_edicts[i]);
                                                VectorCopy (ed->priv.server->moved_from, ed->fields.server->origin);
                                                VectorCopy (ed->priv.server->moved_fromangles, ed->fields.server->angles);
                                                SV_LinkEdict (ed, false);
@@ -1303,83 +1409,125 @@ CLIENT MOVEMENT
 ===============================================================================
 */
 
-/*
-=============
-SV_CheckStuck
+static float unstickoffsets[] =
+{
+       // poutting -/+z changes first as they are least weird
+        0,  0,  -1,
+        0,  0,  1,
+        // x or y changes
+       -1,  0,  0,
+        1,  0,  0,
+        0, -1,  0,
+        0,  1,  0,
+        // x and y changes
+       -1, -1,  0,
+        1, -1,  0,
+       -1,  1,  0,
+        1,  1,  0,
+};
+
+typedef enum unstickresult_e
+{
+       UNSTICK_STUCK = 0,
+       UNSTICK_GOOD = 1,
+       UNSTICK_UNSTUCK = 2
+}
+unstickresult_t;
 
-This is a big hack to try and fix the rare case of getting stuck in the world
-clipping hull.
-=============
-*/
-void SV_CheckStuck (prvm_edict_t *ent)
+unstickresult_t SV_UnstickEntityReturnOffset (prvm_edict_t *ent, vec3_t offset)
 {
-       int i, j, z;
-       vec3_t org;
+       int i, maxunstick;
+
+       // if not stuck in a bmodel, just return
+       if (!SV_TestEntityPosition(ent, vec3_origin))
+               return UNSTICK_GOOD;
 
-       if (!SV_TestEntityPosition(ent))
+       for (i = 0;i < (int)(sizeof(unstickoffsets) / sizeof(unstickoffsets[0]));i += 3)
        {
-               VectorCopy (ent->fields.server->origin, ent->fields.server->oldorigin);
-               return;
+               if (!SV_TestEntityPosition(ent, unstickoffsets + i))
+               {
+                       VectorCopy(unstickoffsets + i, offset);
+                       SV_LinkEdict (ent, true);
+                       return UNSTICK_UNSTUCK;
+               }
        }
 
-       VectorCopy (ent->fields.server->origin, org);
+       maxunstick = (int) ((ent->fields.server->maxs[2] - ent->fields.server->mins[2]) * 0.36);
+       // magic number 0.36 allows unsticking by up to 17 units with the largest supported bbox
 
-       for (z=-1 ; z< 18 ; z++)
-               for (i=-1 ; i <= 1 ; i++)
-                       for (j=-1 ; j <= 1 ; j++)
-                       {
-                               ent->fields.server->origin[0] = org[0] + i;
-                               ent->fields.server->origin[1] = org[1] + j;
-                               ent->fields.server->origin[2] = org[2] + z;
-                               if (!SV_TestEntityPosition(ent))
-                               {
-                                       Con_DPrintf("Unstuck player entity %i (classname \"%s\") with offset %f %f %f.\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(ent->fields.server->classname), (float)i, (float)j, (float)z);
-                                       SV_LinkEdict (ent, true);
-                                       return;
-                               }
-                       }
-
-       VectorCopy (ent->fields.server->oldorigin, ent->fields.server->origin);
-       if (!SV_TestEntityPosition(ent))
+       for(i = 2; i <= maxunstick; ++i)
        {
-               Con_DPrintf("Unstuck player entity %i (classname \"%s\") by restoring oldorigin.\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(ent->fields.server->classname));
-               SV_LinkEdict (ent, true);
-               return;
+               VectorClear(offset);
+               offset[2] = -i;
+               if (!SV_TestEntityPosition(ent, offset))
+               {
+                       SV_LinkEdict (ent, true);
+                       return UNSTICK_UNSTUCK;
+               }
+               offset[2] = i;
+               if (!SV_TestEntityPosition(ent, offset))
+               {
+                       SV_LinkEdict (ent, true);
+                       return UNSTICK_UNSTUCK;
+               }
        }
 
-       VectorCopy (org, ent->fields.server->origin);
-       Con_DPrintf("Stuck player entity %i (classname \"%s\").\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(ent->fields.server->classname));
+       return UNSTICK_STUCK;
 }
 
-static void SV_UnstickEntity (prvm_edict_t *ent)
+qboolean SV_UnstickEntity (prvm_edict_t *ent)
 {
-       int i, j, z;
-       vec3_t org;
+       vec3_t offset;
+       switch(SV_UnstickEntityReturnOffset(ent, offset))
+       {
+               case UNSTICK_GOOD:
+                       return true;
+               case UNSTICK_UNSTUCK:
+                       Con_DPrintf("Unstuck entity %i (classname \"%s\") with offset %f %f %f.\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(ent->fields.server->classname), offset[0], offset[1], offset[2]);
+                       return true;
+               case UNSTICK_STUCK:
+                       if (developer.integer >= 100)
+                               Con_Printf("Stuck entity %i (classname \"%s\").\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(ent->fields.server->classname));
+                       return false;
+               default:
+                       Con_Printf("SV_UnstickEntityReturnOffset returned a value outside its enum.\n");
+                       return false;
+       }
+}
 
-       // if not stuck in a bmodel, just return
-       if (!SV_TestEntityPosition(ent))
-               return;
+/*
+=============
+SV_CheckStuck
 
-       VectorCopy (ent->fields.server->origin, org);
+This is a big hack to try and fix the rare case of getting stuck in the world
+clipping hull.
+=============
+*/
+void SV_CheckStuck (prvm_edict_t *ent)
+{
+       vec3_t offset;
 
-       for (z=-1 ; z< 18 ; z += 6)
-               for (i=-1 ; i <= 1 ; i++)
-                       for (j=-1 ; j <= 1 ; j++)
+       switch(SV_UnstickEntityReturnOffset(ent, offset))
+       {
+               case UNSTICK_GOOD:
+                       VectorCopy (ent->fields.server->origin, ent->fields.server->oldorigin);
+                       break;
+               case UNSTICK_UNSTUCK:
+                       Con_DPrintf("Unstuck player entity %i (classname \"%s\") with offset %f %f %f.\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(ent->fields.server->classname), offset[0], offset[1], offset[2]);
+                       break;
+               case UNSTICK_STUCK:
+                       VectorSubtract(ent->fields.server->oldorigin, ent->fields.server->origin, offset);
+                       if (!SV_TestEntityPosition(ent, offset))
                        {
-                               ent->fields.server->origin[0] = org[0] + i;
-                               ent->fields.server->origin[1] = org[1] + j;
-                               ent->fields.server->origin[2] = org[2] + z;
-                               if (!SV_TestEntityPosition(ent))
-                               {
-                                       Con_DPrintf("Unstuck entity %i (classname \"%s\") with offset %f %f %f.\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(ent->fields.server->classname), (float)i, (float)j, (float)z);
-                                       SV_LinkEdict (ent, true);
-                                       return;
-                               }
+                               Con_DPrintf("Unstuck player entity %i (classname \"%s\") by restoring oldorigin.\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(ent->fields.server->classname));
+                               SV_LinkEdict (ent, true);
                        }
-
-       VectorCopy (org, ent->fields.server->origin);
-       if (developer.integer >= 100)
-               Con_Printf("Stuck entity %i (classname \"%s\").\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(ent->fields.server->classname));
+                       else
+                               Con_DPrintf("Stuck player entity %i (classname \"%s\").\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(ent->fields.server->classname));
+                       break;
+               default:
+                       Con_Printf("SV_UnstickEntityReturnOffset returned a value outside its enum.\n");
+       }
 }
 
 
@@ -1492,7 +1640,7 @@ int SV_TryUnstick (prvm_edict_t *ent, vec3_t oldvel)
                        case 7: dir[0] = -2; dir[1] = -2; break;
                }
 
-               SV_PushEntity (ent, dir, false);
+               SV_PushEntity (ent, dir, false, true);
 
                // retry the original move
                ent->fields.server->velocity[0] = oldvel[0];
@@ -1530,12 +1678,17 @@ void SV_WalkMove (prvm_edict_t *ent)
        int clip, oldonground, originalmove_clip, originalmove_flags, originalmove_groundentity, hitsupercontentsmask;
        vec3_t upmove, downmove, start_origin, start_velocity, stepnormal, originalmove_origin, originalmove_velocity;
        trace_t downtrace;
+       qboolean applygravity;
 
        // if frametime is 0 (due to client sending the same timestamp twice),
        // don't move
        if (sv.frametime <= 0)
                return;
 
+       SV_CheckStuck (ent);
+
+       applygravity = !SV_CheckWater (ent) && ent->fields.server->movetype == MOVETYPE_WALK && ! ((int)ent->fields.server->flags & FL_WATERJUMP);
+
        hitsupercontentsmask = SV_GenericHitSuperContentsMask(ent);
 
        SV_CheckVelocity(ent);
@@ -1546,19 +1699,17 @@ void SV_WalkMove (prvm_edict_t *ent)
        VectorCopy (ent->fields.server->origin, start_origin);
        VectorCopy (ent->fields.server->velocity, start_velocity);
 
-       clip = SV_FlyMove (ent, sv.frametime, NULL, hitsupercontentsmask);
+       clip = SV_FlyMove (ent, sv.frametime, applygravity, NULL, hitsupercontentsmask);
 
        // if the move did not hit the ground at any point, we're not on ground
        if (!(clip & 1))
                ent->fields.server->flags = (int)ent->fields.server->flags & ~FL_ONGROUND;
 
        SV_CheckVelocity(ent);
+       SV_LinkEdict (ent, true);
 
-       VectorCopy(ent->fields.server->origin, originalmove_origin);
-       VectorCopy(ent->fields.server->velocity, originalmove_velocity);
-       originalmove_clip = clip;
-       originalmove_flags = (int)ent->fields.server->flags;
-       originalmove_groundentity = ent->fields.server->groundentity;
+       if(clip & 8) // teleport
+               return;
 
        if ((int)ent->fields.server->flags & FL_WATERJUMP)
                return;
@@ -1566,6 +1717,12 @@ void SV_WalkMove (prvm_edict_t *ent)
        if (sv_nostep.integer)
                return;
 
+       VectorCopy(ent->fields.server->origin, originalmove_origin);
+       VectorCopy(ent->fields.server->velocity, originalmove_velocity);
+       originalmove_clip = clip;
+       originalmove_flags = (int)ent->fields.server->flags;
+       originalmove_groundentity = ent->fields.server->groundentity;
+
        // if move didn't block on a step, return
        if (clip & 2)
        {
@@ -1593,15 +1750,15 @@ void SV_WalkMove (prvm_edict_t *ent)
                // move up
                VectorClear (upmove);
                upmove[2] = sv_stepheight.value;
-               // FIXME: don't link?
-               SV_PushEntity(ent, upmove, false);
+               SV_PushEntity(ent, upmove, false, true);
 
                // move forward
                ent->fields.server->velocity[2] = 0;
-               clip = SV_FlyMove (ent, sv.frametime, stepnormal, hitsupercontentsmask);
+               clip = SV_FlyMove (ent, sv.frametime, applygravity, stepnormal, hitsupercontentsmask);
                ent->fields.server->velocity[2] += start_velocity[2];
 
                SV_CheckVelocity(ent);
+               SV_LinkEdict (ent, true);
 
                // check for stuckness, possibly due to the limited precision of floats
                // in the clipping hulls
@@ -1634,8 +1791,7 @@ void SV_WalkMove (prvm_edict_t *ent)
        // move down
        VectorClear (downmove);
        downmove[2] = -sv_stepheight.value + start_velocity[2]*sv.frametime;
-       // FIXME: don't link?
-       downtrace = SV_PushEntity (ent, downmove, false);
+       downtrace = SV_PushEntity (ent, downmove, false, true);
 
        if (downtrace.fraction < 1 && downtrace.plane.normal[2] > 0.7)
        {
@@ -1665,6 +1821,7 @@ void SV_WalkMove (prvm_edict_t *ent)
        }
 
        SV_CheckVelocity(ent);
+       SV_LinkEdict (ent, true);
 }
 
 //============================================================================
@@ -1773,6 +1930,8 @@ void SV_Physics_Toss (prvm_edict_t *ent)
 {
        trace_t trace;
        vec3_t move;
+       vec_t movetime;
+       int bump;
 
 // if onground, return without moving
        if ((int)ent->fields.server->flags & FL_ONGROUND)
@@ -1802,27 +1961,30 @@ void SV_Physics_Toss (prvm_edict_t *ent)
 
 // add gravity
        if (ent->fields.server->movetype == MOVETYPE_TOSS || ent->fields.server->movetype == MOVETYPE_BOUNCE)
-               SV_AddGravity (ent);
+               ent->fields.server->velocity[2] -= SV_Gravity(ent);
 
 // move angles
        VectorMA (ent->fields.server->angles, sv.frametime, ent->fields.server->avelocity, ent->fields.server->angles);
 
-// move origin
-       VectorScale (ent->fields.server->velocity, sv.frametime, move);
-       trace = SV_PushEntity (ent, move, true);
-       if (ent->priv.server->free)
-               return;
-       if (trace.bmodelstartsolid)
+       movetime = sv.frametime;
+       for (bump = 0;bump < MAX_CLIP_PLANES && movetime > 0;bump++)
        {
-               // try to unstick the entity
-               SV_UnstickEntity(ent);
-               trace = SV_PushEntity (ent, move, false);
+       // move origin
+               VectorScale (ent->fields.server->velocity, movetime, move);
+               trace = SV_PushEntity (ent, move, true, true);
                if (ent->priv.server->free)
                        return;
-       }
-
-       if (trace.fraction < 1)
-       {
+               if (trace.bmodelstartsolid)
+               {
+                       // try to unstick the entity
+                       SV_UnstickEntity(ent);
+                       trace = SV_PushEntity (ent, move, false, true);
+                       if (ent->priv.server->free)
+                               return;
+               }
+               if (trace.fraction == 1)
+                       break;
+               movetime *= 1 - min(1, trace.fraction);
                if (ent->fields.server->movetype == MOVETYPE_BOUNCEMISSILE)
                {
                        ClipVelocity (ent->fields.server->velocity, trace.plane.normal, ent->fields.server->velocity, 2.0);
@@ -1830,13 +1992,30 @@ void SV_Physics_Toss (prvm_edict_t *ent)
                }
                else if (ent->fields.server->movetype == MOVETYPE_BOUNCE)
                {
-                       float d;
-                       ClipVelocity (ent->fields.server->velocity, trace.plane.normal, ent->fields.server->velocity, 1.5);
+                       float d, ent_gravity;
+                       prvm_eval_t *val;
+                       float bouncefactor = 0.5f;
+                       float bouncestop = 60.0f / 800.0f;
+
+                       val = PRVM_EDICTFIELDVALUE(ent, prog->fieldoffsets.bouncefactor);
+                       if (val!=0 && val->_float)
+                               bouncefactor = val->_float;
+
+                       val = PRVM_EDICTFIELDVALUE(ent, prog->fieldoffsets.bouncestop);
+                       if (val!=0 && val->_float)
+                               bouncestop = val->_float;
+
+                       ClipVelocity (ent->fields.server->velocity, trace.plane.normal, ent->fields.server->velocity, 1 + bouncefactor);
                        // LordHavoc: fixed grenades not bouncing when fired down a slope
+                       val = PRVM_EDICTFIELDVALUE(ent, prog->fieldoffsets.gravity);
+                       if (val!=0 && val->_float)
+                               ent_gravity = val->_float;
+                       else
+                               ent_gravity = 1.0;
                        if (sv_gameplayfix_grenadebouncedownslopes.integer)
                        {
                                d = DotProduct(trace.plane.normal, ent->fields.server->velocity);
-                               if (trace.plane.normal[2] > 0.7 && fabs(d) < 60)
+                               if (trace.plane.normal[2] > 0.7 && fabs(d) < sv_gravity.value * bouncestop * ent_gravity)
                                {
                                        ent->fields.server->flags = (int)ent->fields.server->flags | FL_ONGROUND;
                                        ent->fields.server->groundentity = PRVM_EDICT_TO_PROG(trace.ent);
@@ -1848,7 +2027,7 @@ void SV_Physics_Toss (prvm_edict_t *ent)
                        }
                        else
                        {
-                               if (trace.plane.normal[2] > 0.7 && ent->fields.server->velocity[2] < 60)
+                               if (trace.plane.normal[2] > 0.7 && ent->fields.server->velocity[2] < sv_gravity.value * bouncestop * ent_gravity)
                                {
                                        ent->fields.server->flags = (int)ent->fields.server->flags | FL_ONGROUND;
                                        ent->fields.server->groundentity = PRVM_EDICT_TO_PROG(trace.ent);
@@ -1874,6 +2053,8 @@ void SV_Physics_Toss (prvm_edict_t *ent)
                        else
                                ent->fields.server->flags = (int)ent->fields.server->flags & ~FL_ONGROUND;
                }
+               if (!sv_gameplayfix_slidemoveprojectiles.integer || (ent->fields.server->movetype != MOVETYPE_BOUNCE && ent->fields.server->movetype == MOVETYPE_BOUNCEMISSILE) || ((int)ent->fields.server->flags & FL_ONGROUND))
+                       break;
        }
 
 // check for in water
@@ -1902,6 +2083,13 @@ will fall if the floor is pulled out from under them.
 void SV_Physics_Step (prvm_edict_t *ent)
 {
        int flags = (int)ent->fields.server->flags;
+
+       // DRESK
+       // Backup Velocity in the event that movetypesteplandevent is called,
+       // to provide a parameter with the entity's velocity at impact.
+       prvm_eval_t *movetypesteplandevent;
+       vec3_t backupVelocity;
+       VectorCopy(ent->fields.server->velocity, backupVelocity);
        // don't fall at all if fly/swim
        if (!(flags & (FL_FLY | FL_SWIM)))
        {
@@ -1912,10 +2100,10 @@ void SV_Physics_Step (prvm_edict_t *ent)
                        if ((ent->fields.server->velocity[2] >= (1.0 / 32.0) && sv_gameplayfix_upwardvelocityclearsongroundflag.integer) || ent->fields.server->groundentity)
                        {
                                ent->fields.server->flags -= FL_ONGROUND;
-                               SV_AddGravity(ent);
                                SV_CheckVelocity(ent);
-                               SV_FlyMove(ent, sv.frametime, NULL, SV_GenericHitSuperContentsMask(ent));
+                               SV_FlyMove(ent, sv.frametime, true, NULL, SV_GenericHitSuperContentsMask(ent));
                                SV_LinkEdict(ent, true);
+                               ent->priv.server->waterposition_forceupdate = true;
                        }
                }
                else
@@ -1923,31 +2111,63 @@ void SV_Physics_Step (prvm_edict_t *ent)
                        // freefall if not onground
                        int hitsound = ent->fields.server->velocity[2] < sv_gravity.value * -0.1;
 
-                       SV_AddGravity(ent);
                        SV_CheckVelocity(ent);
-                       SV_FlyMove(ent, sv.frametime, NULL, SV_GenericHitSuperContentsMask(ent));
+                       SV_FlyMove(ent, sv.frametime, true, NULL, SV_GenericHitSuperContentsMask(ent));
                        SV_LinkEdict(ent, true);
 
                        // just hit ground
-                       if (hitsound && (int)ent->fields.server->flags & FL_ONGROUND && sv_sound_land.string)
-                               SV_StartSound(ent, 0, sv_sound_land.string, 255, 1);
+                       if (hitsound && (int)ent->fields.server->flags & FL_ONGROUND)
+                       {
+                               // DRESK - Check for Entity Land Event Function
+                               movetypesteplandevent = PRVM_EDICTFIELDVALUE(ent, prog->fieldoffsets.movetypesteplandevent);
+
+                               if(movetypesteplandevent->function)
+                               { // Valid Function; Execute
+                                       // Prepare Parameters
+                                               // Assign Velocity at Impact
+                                               PRVM_G_VECTOR(OFS_PARM0)[0] = backupVelocity[0];
+                                               PRVM_G_VECTOR(OFS_PARM0)[1] = backupVelocity[1];
+                                               PRVM_G_VECTOR(OFS_PARM0)[2] = backupVelocity[2];
+                                               // Assign Self
+                                               prog->globals.server->self = PRVM_EDICT_TO_PROG(ent);
+                                       // Execute VM Function
+                                       PRVM_ExecuteProgram(movetypesteplandevent->function, "movetypesteplandevent: NULL function");
+                               }
+                               else
+                               // Check for Engine Landing Sound
+                               if(sv_sound_land.string)
+                                       SV_StartSound(ent, 0, sv_sound_land.string, 255, 1);
+                       }
+                       ent->priv.server->waterposition_forceupdate = true;
                }
        }
 
 // regular thinking
-       SV_RunThink(ent);
+       if (!SV_RunThink(ent))
+               return;
 
-       SV_CheckWaterTransition(ent);
+       if (ent->priv.server->waterposition_forceupdate || !VectorCompare(ent->fields.server->origin, ent->priv.server->waterposition_origin))
+       {
+               ent->priv.server->waterposition_forceupdate = false;
+               VectorCopy(ent->fields.server->origin, ent->priv.server->waterposition_origin);
+               SV_CheckWaterTransition(ent);
+       }
 }
 
 //============================================================================
 
 static void SV_Physics_Entity (prvm_edict_t *ent)
 {
-       // don't run a move on newly spawned projectiles as it messes up movement
-       // interpolation and rocket trails
+       // don't run think/move on newly spawned projectiles as it messes up
+       // movement interpolation and rocket trails, and is inconsistent with
+       // respect to entities spawned in the same frame
+       // (if an ent spawns a higher numbered ent, it moves in the same frame,
+       //  but if it spawns a lower numbered ent, it doesn't - this never moves
+       //  ents in the first frame regardless)
        qboolean runmove = ent->priv.server->move;
        ent->priv.server->move = true;
+       if (!runmove && sv_gameplayfix_delayprojectiles.integer)
+               return;
        switch ((int) ent->fields.server->movetype)
        {
        case MOVETYPE_PUSH:
@@ -1976,13 +2196,7 @@ static void SV_Physics_Entity (prvm_edict_t *ent)
                break;
        case MOVETYPE_WALK:
                if (SV_RunThink (ent))
-               {
-                       if (!SV_CheckWater (ent) && ! ((int)ent->fields.server->flags & FL_WATERJUMP) )
-                               SV_AddGravity (ent);
-                       SV_CheckStuck (ent);
                        SV_WalkMove (ent);
-                       SV_LinkEdict (ent, true);
-               }
                break;
        case MOVETYPE_TOSS:
        case MOVETYPE_BOUNCE:
@@ -1990,7 +2204,7 @@ static void SV_Physics_Entity (prvm_edict_t *ent)
        case MOVETYPE_FLYMISSILE:
        case MOVETYPE_FLY:
                // regular thinking
-               if (SV_RunThink (ent) && runmove)
+               if (SV_RunThink (ent))
                        SV_Physics_Toss (ent);
                break;
        default:
@@ -2004,13 +2218,16 @@ void SV_Physics_ClientMove(void)
        prvm_edict_t *ent;
        ent = host_client->edict;
 
-       // call player physics
+       // call player physics, this needs the proper frametime
+       prog->globals.server->frametime = sv.frametime;
        SV_ClientThink();
 
-       // call standard client pre-think
+       // call standard client pre-think, with frametime = 0
        prog->globals.server->time = sv.time;
+       prog->globals.server->frametime = 0;
        prog->globals.server->self = PRVM_EDICT_TO_PROG(ent);
        PRVM_ExecuteProgram (prog->globals.server->PlayerPreThink, "QC function PlayerPreThink is missing");
+       prog->globals.server->frametime = sv.frametime;
 
        // make sure the velocity is sane (not a NaN)
        SV_CheckVelocity(ent);
@@ -2022,21 +2239,14 @@ void SV_Physics_ClientMove(void)
                VectorClear(ent->fields.server->velocity);
 
        // perform MOVETYPE_WALK behavior
-       if (!SV_CheckWater (ent) && ! ((int)ent->fields.server->flags & FL_WATERJUMP) )
-               SV_AddGravity (ent);
-       SV_CheckStuck (ent);
        SV_WalkMove (ent);
 
-       SV_CheckVelocity (ent);
-
-       SV_LinkEdict (ent, true);
-
-       SV_CheckVelocity (ent);
-
-       // call standard player post-think
+       // call standard player post-think, with frametime = 0
        prog->globals.server->time = sv.time;
+       prog->globals.server->frametime = 0;
        prog->globals.server->self = PRVM_EDICT_TO_PROG(ent);
        PRVM_ExecuteProgram (prog->globals.server->PlayerPostThink, "QC function PlayerPostThink is missing");
+       prog->globals.server->frametime = sv.frametime;
 
        if(ent->fields.server->fixangle)
        {
@@ -2060,8 +2270,11 @@ void SV_Physics_ClientEntity(prvm_edict_t *ent)
        }
 
        // don't run physics here if running asynchronously
-       if (host_client->clmovement_skipphysicsframes <= 0)
+       if (host_client->clmovement_inputtimeout <= 0)
+       {
                SV_ClientThink();
+               //host_client->cmd.time = max(host_client->cmd.time, sv.time);
+       }
 
        // make sure the velocity is sane (not a NaN)
        SV_CheckVelocity(ent);
@@ -2104,13 +2317,8 @@ void SV_Physics_ClientEntity(prvm_edict_t *ent)
        case MOVETYPE_WALK:
                SV_RunThink (ent);
                // don't run physics here if running asynchronously
-               if (host_client->clmovement_skipphysicsframes <= 0)
-               {
-                       if (!SV_CheckWater (ent) && ! ((int)ent->fields.server->flags & FL_WATERJUMP) )
-                               SV_AddGravity (ent);
-                       SV_CheckStuck (ent);
+               if (host_client->clmovement_inputtimeout <= 0)
                        SV_WalkMove (ent);
-               }
                break;
        case MOVETYPE_TOSS:
        case MOVETYPE_BOUNCE:
@@ -2122,7 +2330,6 @@ void SV_Physics_ClientEntity(prvm_edict_t *ent)
                break;
        case MOVETYPE_FLY:
                SV_RunThink (ent);
-               SV_CheckWater (ent);
                SV_WalkMove (ent);
                break;
        default:
@@ -2132,8 +2339,10 @@ void SV_Physics_ClientEntity(prvm_edict_t *ent)
 
        // decrement the countdown variable used to decide when to go back to
        // synchronous physics
-       if (host_client->clmovement_skipphysicsframes > 0)
-               host_client->clmovement_skipphysicsframes--;
+       if (host_client->clmovement_inputtimeout > sv.frametime)
+               host_client->clmovement_inputtimeout -= sv.frametime;
+       else
+               host_client->clmovement_inputtimeout = 0;
 
        SV_CheckVelocity (ent);
 
@@ -2210,7 +2419,7 @@ void SV_Physics (void)
        }
 
        // decrement prog->num_edicts if the highest number entities died
-       for (;PRVM_EDICT_NUM(prog->num_edicts - 1)->priv.server->free;prog->num_edicts--);
+       for (;PRVM_ED_CanAlloc(PRVM_EDICT_NUM(prog->num_edicts - 1));prog->num_edicts--);
 
        if (!sv_freezenonclients.integer)
                sv.time += sv.frametime;