]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - sv_phys.c
fix return value of FS_WhichPack to NOT include the -basedir
[xonotic/darkplaces.git] / sv_phys.c
index c3ee35c2204da4be71377c9c198dedefabbc730a..39cb72ad9309ec8e5d70d4084a9444ede18d103b 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];
@@ -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)
@@ -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 +516,11 @@ 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)
+               VectorCopy(trace.endpos, ent->fields.server->origin);
+       return false;
 }
 
 /*
@@ -515,7 +545,7 @@ 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 +580,8 @@ 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 +609,12 @@ 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 +642,27 @@ 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 +674,17 @@ 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 +717,7 @@ 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;
 }
 
 
@@ -937,7 +978,7 @@ 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))
                VectorCopy(primal_velocity, ent->fields.server->velocity);
        return blocked;
 }
@@ -1014,14 +1055,17 @@ SV_PushMove
 void SV_PushMove (prvm_edict_t *pusher, float movetime)
 {
        int i, e, index;
+       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])
        {
@@ -1060,6 +1104,8 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
        }
        pushermodel = sv.models[index];
 
+       rotated = VectorLength2(pusher->fields.server->angles) + VectorLength2(pusher->fields.server->avelocity) > 0;
+
        movetime2 = movetime;
        VectorScale(pusher->fields.server->velocity, movetime2, move1);
        VectorScale(pusher->fields.server->avelocity, movetime2, moveangle);
@@ -1148,18 +1194,28 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                 || check->fields.server->movetype == MOVETYPE_FAKEPUSH)
                        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, 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);
@@ -1172,9 +1228,11 @@ 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;
@@ -1184,13 +1242,14 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                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, 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
@@ -1201,7 +1260,7 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                        VectorCopy (check->priv.server->moved_fromangles, check->fields.server->angles);
                        SV_PushEntity (check, move2, 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, 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
@@ -1211,7 +1270,7 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                                VectorCopy (check->priv.server->moved_fromangles, check->fields.server->angles);
                                SV_PushEntity (check, move2, 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, 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 +1294,7 @@ 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);
@@ -1303,6 +1362,52 @@ CLIENT MOVEMENT
 ===============================================================================
 */
 
+static float unstickoffsets[] =
+{
+       -1,  0,  0,
+        1,  0,  0,
+        0, -1,  0,
+        0,  1,  0,
+       -1, -1,  0,
+        1, -1,  0,
+       -1,  1,  0,
+        1,  1,  0,
+        0,  0,  -1,
+        0,  0,  1,
+        0,  0,  -2,
+        0,  0,  2,
+        0,  0,  -3,
+        0,  0,  3,
+        0,  0,  -4,
+        0,  0,  4,
+        0,  0,  -5,
+        0,  0,  5,
+        0,  0,  -6,
+        0,  0,  6,
+        0,  0,  -7,
+        0,  0,  7,
+        0,  0,  -8,
+        0,  0,  8,
+        0,  0,  -9,
+        0,  0,  9,
+        0,  0,  -10,
+        0,  0,  10,
+        0,  0,  -11,
+        0,  0,  11,
+        0,  0,  -12,
+        0,  0,  12,
+        0,  0,  -13,
+        0,  0,  13,
+        0,  0,  -14,
+        0,  0,  14,
+        0,  0,  -15,
+        0,  0,  15,
+        0,  0,  -16,
+        0,  0,  16,
+        0,  0,  -17,
+        0,  0,  17,
+};
+
 /*
 =============
 SV_CheckStuck
@@ -1313,73 +1418,57 @@ clipping hull.
 */
 void SV_CheckStuck (prvm_edict_t *ent)
 {
-       int i, j, z;
-       vec3_t org;
+       int i;
+       vec3_t offset;
 
-       if (!SV_TestEntityPosition(ent))
+       if (!SV_TestEntityPosition(ent, vec3_origin))
        {
                VectorCopy (ent->fields.server->origin, ent->fields.server->oldorigin);
                return;
        }
 
-       VectorCopy (ent->fields.server->origin, org);
-
-       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;
-                               }
-                       }
+       for (i = 0;i < (int)(sizeof(unstickoffsets) / sizeof(unstickoffsets[0]));i += 3)
+       {
+               if (!SV_TestEntityPosition(ent, unstickoffsets + i))
+               {
+                       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), unstickoffsets[i+0], unstickoffsets[i+1], unstickoffsets[i+2]);
+                       SV_LinkEdict (ent, true);
+                       return;
+               }
+       }
 
-       VectorCopy (ent->fields.server->oldorigin, ent->fields.server->origin);
-       if (!SV_TestEntityPosition(ent))
+       VectorSubtract(ent->fields.server->oldorigin, ent->fields.server->origin, offset);
+       if (!SV_TestEntityPosition(ent, offset))
        {
                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;
        }
 
-       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));
 }
 
-static void SV_UnstickEntity (prvm_edict_t *ent)
+qboolean SV_UnstickEntity (prvm_edict_t *ent)
 {
-       int i, j, z;
-       vec3_t org;
+       int i;
 
        // if not stuck in a bmodel, just return
-       if (!SV_TestEntityPosition(ent))
-               return;
-
-       VectorCopy (ent->fields.server->origin, org);
+       if (!SV_TestEntityPosition(ent, vec3_origin))
+               return true;
 
-       for (z=-1 ; z< 18 ; z += 6)
-               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 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;
-                               }
-                       }
+       for (i = 0;i < (int)(sizeof(unstickoffsets) / sizeof(unstickoffsets[0]));i += 3)
+       {
+               if (!SV_TestEntityPosition(ent, unstickoffsets + i))
+               {
+                       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), unstickoffsets[i+0], unstickoffsets[i+1], unstickoffsets[i+2]);
+                       SV_LinkEdict (ent, true);
+                       return 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));
+       return false;
 }
 
 
@@ -1902,6 +1991,13 @@ 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)))
        {
@@ -1916,6 +2012,7 @@ void SV_Physics_Step (prvm_edict_t *ent)
                                SV_CheckVelocity(ent);
                                SV_FlyMove(ent, sv.frametime, NULL, SV_GenericHitSuperContentsMask(ent));
                                SV_LinkEdict(ent, true);
+                               ent->priv.server->waterposition_forceupdate = true;
                        }
                }
                else
@@ -1929,15 +2026,42 @@ void SV_Physics_Step (prvm_edict_t *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);
+       }
 }
 
 //============================================================================
@@ -1990,7 +2114,7 @@ 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) && (runmove || !sv_gameplayfix_delayprojectiles.integer))
                        SV_Physics_Toss (ent);
                break;
        default:
@@ -2004,13 +2128,16 @@ 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);
@@ -2033,10 +2160,12 @@ void SV_Physics_ClientMove(void)
 
        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)
        {
@@ -2059,7 +2188,9 @@ void SV_Physics_ClientEntity(prvm_edict_t *ent)
                return;
        }
 
-       SV_ClientThink();
+       // don't run physics here if running asynchronously
+       if (host_client->clmovement_skipphysicsframes <= 0)
+               SV_ClientThink();
 
        // make sure the velocity is sane (not a NaN)
        SV_CheckVelocity(ent);