]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - sv_phys.c
final speedhack fixes
[xonotic/darkplaces.git] / sv_phys.c
index 6b2d0207621d0243f1b860305709b1551feb2815..362689f8795fa954e69421a4e8c524e75bf331e5 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);
-}
-
 /*
 ===============================================================================
 
@@ -85,111 +51,30 @@ LINE TESTING IN HULLS
 ===============================================================================
 */
 
-/*
-==================
-SV_Move_ClipToEntity
-
-Handles selection or creation of a clipping hull, and offseting (and
-eventually rotation) of the end points
-==================
-*/
-trace_t SV_Move_ClipToEntity(prvm_edict_t *ent, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int movetype, int hitsupercontents)
+int SV_GenericHitSuperContentsMask(const prvm_edict_t *passedict)
 {
-       trace_t trace;
-       model_t *model = NULL;
-       matrix4x4_t matrix, imatrix;
-       float tempnormal[3], starttransformed[3], endtransformed[3];
-
-       memset(&trace, 0, sizeof(trace));
-       trace.fraction = trace.realfraction = 1;
-       VectorCopy(end, trace.endpos);
-
-       if ((int) ent->fields.server->solid == SOLID_BSP || movetype == MOVE_HITMODEL)
+       prvm_eval_t *val;
+       if (passedict)
        {
-               unsigned int modelindex = (unsigned int)ent->fields.server->modelindex;
-               // if the modelindex is 0, it shouldn't be SOLID_BSP!
-               if (modelindex == 0)
-               {
-                       Con_Printf("SV_Move_ClipToEntity: edict %i: SOLID_BSP with no model\n", PRVM_NUM_FOR_EDICT(ent));
-                       return trace;
-               }
-               if (modelindex >= MAX_MODELS)
-               {
-                       Con_Printf("SV_Move_ClipToEntity: edict %i: SOLID_BSP with invalid modelindex\n", PRVM_NUM_FOR_EDICT(ent));
-                       return trace;
-               }
-               model = sv.models[modelindex];
-               if (modelindex != 0 && model == NULL)
-               {
-                       Con_Printf("SV_Move_ClipToEntity: edict %i: SOLID_BSP with invalid modelindex\n", PRVM_NUM_FOR_EDICT(ent));
-                       return trace;
-               }
-
-               if ((int) ent->fields.server->solid == SOLID_BSP)
+               val = PRVM_EDICTFIELDVALUE(passedict, prog->fieldoffsets.dphitcontentsmask);
+               if (val && val->_float)
+                       return (int)val->_float;
+               else if (passedict->fields.server->solid == SOLID_SLIDEBOX)
                {
-                       if (!model->TraceBox)
-                       {
-                               Con_Printf("SV_Move_ClipToEntity: edict %i: SOLID_BSP with a non-collidable model\n", PRVM_NUM_FOR_EDICT(ent));
-                               return trace;
-                       }
-                       //if ((int) ent->fields.server->movetype != MOVETYPE_PUSH)
-                       //{
-                       //      Con_Printf("SV_Move_ClipToEntity: edict %i: SOLID_BSP without MOVETYPE_PUSH\n", PRVM_NUM_FOR_EDICT(ent));
-                       //      return trace;
-                       //}
+                       if ((int)passedict->fields.server->flags & FL_MONSTER)
+                               return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_MONSTERCLIP;
+                       else
+                               return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_PLAYERCLIP;
                }
-               Matrix4x4_CreateFromQuakeEntity(&matrix, ent->fields.server->origin[0], ent->fields.server->origin[1], ent->fields.server->origin[2], ent->fields.server->angles[0], ent->fields.server->angles[1], ent->fields.server->angles[2], 1);
-       }
-       else
-               Matrix4x4_CreateTranslate(&matrix, ent->fields.server->origin[0], ent->fields.server->origin[1], ent->fields.server->origin[2]);
-
-       Matrix4x4_Invert_Simple(&imatrix, &matrix);
-       Matrix4x4_Transform(&imatrix, start, starttransformed);
-       Matrix4x4_Transform(&imatrix, end, endtransformed);
-#if COLLISIONPARANOID >= 3
-       Con_Printf("trans(%f %f %f -> %f %f %f, %f %f %f -> %f %f %f)", start[0], start[1], start[2], starttransformed[0], starttransformed[1], starttransformed[2], end[0], end[1], end[2], endtransformed[0], endtransformed[1], endtransformed[2]);
-#endif
-
-       if (model && model->TraceBox)
-       {
-               int frame;
-               frame = (int)ent->fields.server->frame;
-               frame = bound(0, frame, (model->numframes - 1));
-               model->TraceBox(model, frame, &trace, starttransformed, mins, maxs, endtransformed, hitsupercontents);
-       }
-       else
-               Collision_ClipTrace_Box(&trace, ent->fields.server->mins, ent->fields.server->maxs, starttransformed, mins, maxs, endtransformed, hitsupercontents, ent->fields.server->solid == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY, 0, NULL);
-       trace.fraction = bound(0, trace.fraction, 1);
-       trace.realfraction = bound(0, trace.realfraction, 1);
-
-       if (trace.fraction < 1)
-       {
-               VectorLerp(start, trace.fraction, end, trace.endpos);
-               VectorCopy(trace.plane.normal, tempnormal);
-               Matrix4x4_Transform3x3(&matrix, tempnormal, trace.plane.normal);
-               // FIXME: should recalc trace.plane.dist
+               else if (passedict->fields.server->solid == SOLID_CORPSE)
+                       return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY;
+               else if (passedict->fields.server->solid == SOLID_TRIGGER)
+                       return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY;
+               else
+                       return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_CORPSE;
        }
        else
-               VectorCopy(end, trace.endpos);
-
-       return trace;
-}
-
-/*
-==================
-SV_Move_ClipToWorld
-==================
-*/
-trace_t SV_Move_ClipToWorld(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int movetype, int hitsupercontents)
-{
-       trace_t trace;
-       memset(&trace, 0, sizeof(trace));
-       trace.fraction = trace.realfraction = 1;
-       sv.worldmodel->TraceBox(sv.worldmodel, 0, &trace, start, mins, maxs, end, hitsupercontents);
-       trace.fraction = bound(0, trace.fraction, 1);
-       trace.realfraction = bound(0, trace.realfraction, 1);
-       VectorLerp(start, trace.fraction, end, trace.endpos);
-       return trace;
+               return SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_CORPSE;
 }
 
 /*
@@ -198,18 +83,16 @@ SV_Move
 ==================
 */
 #if COLLISIONPARANOID >= 1
-trace_t SV_Move_(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict)
+trace_t SV_Move_(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask)
 #else
-trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict)
+trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask)
 #endif
 {
        vec3_t hullmins, hullmaxs;
-       int i;
-       int hitsupercontentsmask;
+       int i, bodysupercontents;
        int passedictprog;
        qboolean pointtrace;
        prvm_edict_t *traceowner, *touch;
-       prvm_eval_t *val;
        trace_t trace;
        // bounding box of entire move area
        vec3_t clipboxmins, clipboxmaxs;
@@ -221,6 +104,11 @@ trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const
        vec3_t clipstart, clipend;
        // trace results
        trace_t cliptrace;
+       // matrices to transform into/out of other entity's space
+       matrix4x4_t matrix, imatrix;
+       // model of other entity
+       model_t *model;
+       // list of entities to test for collisions
        int numtouchedicts;
        prvm_edict_t *touchedicts[MAX_EDICTS];
 
@@ -234,28 +122,8 @@ trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const
        Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
 #endif
 
-       if (passedict)
-       {
-               val = PRVM_EDICTFIELDVALUE(passedict, prog->fieldoffsets.dphitcontentsmask);
-               if (val && val->_float)
-                       hitsupercontentsmask = (int)val->_float;
-               else if (passedict->fields.server->solid == SOLID_SLIDEBOX)
-               {
-                       if ((int)passedict->fields.server->flags & FL_MONSTER)
-                               hitsupercontentsmask = SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_MONSTERCLIP;
-                       else
-                               hitsupercontentsmask = SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_PLAYERCLIP;
-               }
-               else if (passedict->fields.server->solid == SOLID_CORPSE)
-                       hitsupercontentsmask = SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY;
-               else
-                       hitsupercontentsmask = SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_CORPSE;
-       }
-       else
-               hitsupercontentsmask = SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY | SUPERCONTENTS_CORPSE;
-
        // clip to world
-       cliptrace = SV_Move_ClipToWorld(clipstart, clipmins, clipmaxs, clipend, type, hitsupercontentsmask);
+       Collision_ClipToWorld(&cliptrace, sv.worldmodel, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask);
        cliptrace.bmodelstartsolid = cliptrace.startsolid;
        if (cliptrace.startsolid || cliptrace.fraction < 1)
                cliptrace.ent = prog->edicts;
@@ -306,6 +174,8 @@ trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const
        traceowner = passedict ? PRVM_PROG_TO_EDICT(passedict->fields.server->owner) : 0;
 
        // clip to entities
+       // because this uses World_EntitiestoBox, we know all entity boxes overlap
+       // the clip region, so we can skip culling checks in the loop below
        numtouchedicts = World_EntitiesInBox(&sv.world, clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
        if (numtouchedicts > MAX_EDICTS)
        {
@@ -338,57 +208,44 @@ trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const
                                continue;
                }
 
+               bodysupercontents = touch->fields.server->solid == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
+
                // might interact, so do an exact clip
-               if ((int)touch->fields.server->flags & FL_MONSTER)
-                       trace = SV_Move_ClipToEntity(touch, clipstart, clipmins2, clipmaxs2, clipend, type, hitsupercontentsmask);
-               else
-                       trace = SV_Move_ClipToEntity(touch, clipstart, clipmins, clipmaxs, clipend, type, hitsupercontentsmask);
-               // LordHavoc: take the 'best' answers from the new trace and combine with existing data
-               if (trace.allsolid)
-                       cliptrace.allsolid = true;
-               if (trace.startsolid)
-               {
-                       if (touch->fields.server->solid == SOLID_BSP)
-                               cliptrace.bmodelstartsolid = true;
-                       cliptrace.startsolid = true;
-                       if (cliptrace.realfraction == 1)
-                               cliptrace.ent = touch;
-               }
-               // don't set this except on the world, because it can easily confuse
-               // monsters underwater if there's a bmodel involved in the trace
-               // (inopen && inwater is how they check water visibility)
-               //if (trace.inopen)
-               //      cliptrace.inopen = true;
-               if (trace.inwater)
-                       cliptrace.inwater = true;
-               if (trace.realfraction < cliptrace.realfraction)
+               model = NULL;
+               if ((int) touch->fields.server->solid == SOLID_BSP || type == MOVE_HITMODEL)
                {
-                       cliptrace.fraction = trace.fraction;
-                       cliptrace.realfraction = trace.realfraction;
-                       VectorCopy(trace.endpos, cliptrace.endpos);
-                       cliptrace.plane = trace.plane;
-                       cliptrace.ent = touch;
-                       cliptrace.hitsupercontents = trace.hitsupercontents;
-                       cliptrace.hitq3surfaceflags = trace.hitq3surfaceflags;
-                       cliptrace.hittexture = trace.hittexture;
+                       unsigned int modelindex = (unsigned int)touch->fields.server->modelindex;
+                       // if the modelindex is 0, it shouldn't be SOLID_BSP!
+                       if (modelindex > 0 && modelindex < MAX_MODELS)
+                               model = sv.models[(int)touch->fields.server->modelindex];
                }
-               cliptrace.startsupercontents |= trace.startsupercontents;
+               if (model)
+                       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);
+               else
+                       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);
+               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_CombineTraces(&cliptrace, &trace, (void *)touch, touch->fields.server->solid == SOLID_BSP);
        }
 
        return cliptrace;
 }
 
 #if COLLISIONPARANOID >= 1
-trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict)
+trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask)
 {
        int endstuck;
        trace_t trace;
        vec3_t temp;
-       trace = SV_Move_(start, mins, maxs, end, type, passedict);
+       trace = SV_Move_(start, mins, maxs, end, type, passedict, hitsupercontentsmask);
        if (passedict)
        {
                VectorCopy(trace.endpos, temp);
-               endstuck = SV_Move_(temp, mins, maxs, temp, type, passedict).startsolid;
+               endstuck = SV_Move_(temp, mins, maxs, temp, type, passedict, hitsupercontentsmask).startsolid;
 #if COLLISIONPARANOID < 3
                if (trace.startsolid || endstuck)
 #endif
@@ -412,7 +269,7 @@ 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)
        {
@@ -486,7 +343,7 @@ 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])
@@ -568,9 +425,12 @@ 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);
+       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
@@ -580,10 +440,11 @@ 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;}
@@ -598,8 +459,11 @@ 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;
 }
 
 /*
@@ -624,7 +488,7 @@ 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");
        }
 }
@@ -659,6 +523,8 @@ 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");
                }
@@ -719,22 +585,27 @@ 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;
 }
 
@@ -745,45 +616,26 @@ SV_Impact
 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);
 
        prog->globals.server->time = sv.time;
        if (!e1->priv.server->free && !e2->priv.server->free && e1->fields.server->touch && e1->fields.server->solid != SOLID_NOT)
        {
                prog->globals.server->self = PRVM_EDICT_TO_PROG(e1);
                prog->globals.server->other = PRVM_EDICT_TO_PROG(e2);
-               prog->globals.server->trace_allsolid = trace->allsolid;
-               prog->globals.server->trace_startsolid = trace->startsolid;
-               prog->globals.server->trace_fraction = trace->fraction;
-               prog->globals.server->trace_inwater = trace->inwater;
-               prog->globals.server->trace_inopen = trace->inopen;
-               VectorCopy (trace->endpos, prog->globals.server->trace_endpos);
-               VectorCopy (trace->plane.normal, prog->globals.server->trace_plane_normal);
-               prog->globals.server->trace_plane_dist =  trace->plane.dist;
-               if (trace->ent)
-                       prog->globals.server->trace_ent = PRVM_EDICT_TO_PROG(trace->ent);
-               else
-                       prog->globals.server->trace_ent = PRVM_EDICT_TO_PROG(prog->edicts);
-               if ((val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.trace_dpstartcontents)))
-                       val->_float = trace->startsupercontents;
-               if ((val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.trace_dphitcontents)))
-                       val->_float = trace->hitsupercontents;
-               if ((val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.trace_dphitq3surfaceflags)))
-                       val->_float = trace->hitq3surfaceflags;
-               if ((val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.trace_dphittexturename)))
-               {
-                       if (trace->hittexture)
-                               val->string = PRVM_SetTempString(trace->hittexture->name);
-                       else
-                               val->string = 0;
-               }
                PRVM_ExecuteProgram (e1->fields.server->touch, "QC function self.touch is missing");
        }
 
@@ -791,14 +643,9 @@ void SV_Impact (prvm_edict_t *e1, trace_t *trace)
        {
                prog->globals.server->self = PRVM_EDICT_TO_PROG(e2);
                prog->globals.server->other = PRVM_EDICT_TO_PROG(e1);
-               prog->globals.server->trace_allsolid = false;
-               prog->globals.server->trace_startsolid = false;
-               prog->globals.server->trace_fraction = 1;
-               prog->globals.server->trace_inwater = false;
-               prog->globals.server->trace_inopen = true;
-               VectorCopy (e2->fields.server->origin, prog->globals.server->trace_endpos);
-               VectorSet (prog->globals.server->trace_plane_normal, 0, 0, 1);
-               prog->globals.server->trace_plane_dist = 0;
+               VectorCopy(e2->fields.server->origin, prog->globals.server->trace_endpos);
+               VectorNegate(trace->plane.normal, prog->globals.server->trace_plane_normal);
+               prog->globals.server->trace_plane_dist = -trace->plane.dist;
                prog->globals.server->trace_ent = PRVM_EDICT_TO_PROG(e1);
                if ((val = PRVM_GLOBALFIELDVALUE(prog->globaloffsets.trace_dpstartcontents)))
                        val->_float = 0;
@@ -813,6 +660,7 @@ 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;
 }
 
 
@@ -853,7 +701,7 @@ If stepnormal is not NULL, the plane normal of any vertical wall hit will be sto
 */
 // LordHavoc: increased from 5 to 32
 #define MAX_CLIP_PLANES 32
-int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal)
+int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal, int hitsupercontentsmask)
 {
        int blocked, bumpcount;
        int i, j, impact, numplanes;
@@ -873,7 +721,7 @@ int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal)
                        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);
+               trace = SV_Move(ent->fields.server->origin, ent->fields.server->mins, ent->fields.server->maxs, end, MOVE_NORMAL, ent, hitsupercontentsmask);
 #if 0
                //if (trace.fraction < 0.002)
                {
@@ -884,7 +732,7 @@ int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal)
                        start[2] += 3;//0.03125;
                        VectorMA(ent->fields.server->origin, time_left, ent->fields.server->velocity, end);
                        end[2] += 3;//0.03125;
-                       testtrace = SV_Move(start, ent->fields.server->mins, ent->fields.server->maxs, end, MOVE_NORMAL, ent);
+                       testtrace = SV_Move(start, ent->fields.server->mins, ent->fields.server->maxs, end, MOVE_NORMAL, ent, hitsupercontentsmask);
                        if (trace.fraction < testtrace.fraction && !testtrace.startsolid && (testtrace.fraction == 1 || DotProduct(trace.plane.normal, ent->fields.server->velocity) < DotProduct(testtrace.plane.normal, ent->fields.server->velocity)))
                        {
                                Con_Printf("got further (new %f > old %f)\n", testtrace.fraction, trace.fraction);
@@ -899,7 +747,7 @@ int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal)
                                VectorMA(ent->fields.server->origin, time_left, ent->fields.server->velocity, end);
                                VectorMA(start, 3, planes[i], start);
                                VectorMA(end, 3, planes[i], end);
-                               testtrace = SV_Move(start, ent->fields.server->mins, ent->fields.server->maxs, end, MOVE_NORMAL, ent);
+                               testtrace = SV_Move(start, ent->fields.server->mins, ent->fields.server->maxs, end, MOVE_NORMAL, ent, hitsupercontentsmask);
                                if (trace.fraction < testtrace.fraction)
                                {
                                        trace = testtrace;
@@ -945,13 +793,7 @@ int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal)
                        trace.ent = prog->edicts;
                }
 
-               if (((int) ent->fields.server->flags & FL_ONGROUND) && ent->fields.server->groundentity == PRVM_EDICT_TO_PROG(trace.ent))
-                       impact = false;
-               else
-               {
-                       ent->fields.server->flags = (int)ent->fields.server->flags & ~FL_ONGROUND;
-                       impact = true;
-               }
+               impact = !((int) ent->fields.server->flags & FL_ONGROUND) || ent->fields.server->groundentity != PRVM_EDICT_TO_PROG(trace.ent);
 
                if (trace.plane.normal[2])
                {
@@ -1074,7 +916,7 @@ int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal)
        {
                // LordHavoc: fix the 'fall to your death in a wedge corner' glitch
                // flag ONGROUND if there's ground under it
-               trace = SV_Move(ent->fields.server->origin, ent->fields.server->mins, ent->fields.server->maxs, end, MOVE_NORMAL, ent);
+               trace = SV_Move(ent->fields.server->origin, ent->fields.server->mins, ent->fields.server->maxs, end, MOVE_NORMAL, ent, hitsupercontentsmask);
        }
        */
 
@@ -1134,7 +976,7 @@ static trace_t SV_PushEntity (prvm_edict_t *ent, vec3_t push, qboolean failonbmo
        else
                type = MOVE_NORMAL;
 
-       trace = SV_Move (ent->fields.server->origin, ent->fields.server->mins, ent->fields.server->maxs, end, type, ent);
+       trace = SV_Move (ent->fields.server->origin, ent->fields.server->mins, ent->fields.server->maxs, end, type, ent, SV_GenericHitSuperContentsMask(ent));
        if (trace.bmodelstartsolid && failonbmodelstartsolid)
                return trace;
 
@@ -1163,6 +1005,8 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
        static prvm_edict_t *checkentities[MAX_EDICTS];
        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])
        {
@@ -1267,6 +1111,12 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
        pusher->fields.server->ltime += movetime;
        SV_LinkEdict (pusher, false);
 
+       pushermodel = NULL;
+       if (pusher->fields.server->modelindex >= 1 && pusher->fields.server->modelindex < MAX_MODELS)
+               pushermodel = sv.models[(int)pusher->fields.server->modelindex];
+       Matrix4x4_CreateFromQuakeEntity(&pusherfinalmatrix, pusher->fields.server->origin[0], pusher->fields.server->origin[1], pusher->fields.server->origin[2], pusher->fields.server->angles[0], pusher->fields.server->angles[1], pusher->fields.server->angles[2], 1);
+       Matrix4x4_Invert_Simple(&pusherfinalimatrix, &pusherfinalmatrix);
+
        savesolid = pusher->fields.server->solid;
 
 // see if any solid entities are inside the final position
@@ -1276,6 +1126,7 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
        for (e = 0;e < numcheckentities;e++)
        {
                prvm_edict_t *check = checkentities[e];
+               int checkcontents = SV_GenericHitSuperContentsMask(check);
                if (check->fields.server->movetype == MOVETYPE_NONE
                 || check->fields.server->movetype == MOVETYPE_PUSH
                 || check->fields.server->movetype == MOVETYPE_FOLLOW
@@ -1284,16 +1135,12 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                        continue;
 
                // if the entity is standing on the pusher, it will definitely be moved
-               if (((int)check->fields.server->flags & FL_ONGROUND) && PRVM_PROG_TO_EDICT(check->fields.server->groundentity) == pusher)
-               {
-                       // remove the onground flag for non-players
-                       if (check->fields.server->movetype != MOVETYPE_WALK)
-                               check->fields.server->flags = (int)check->fields.server->flags & ~FL_ONGROUND;
-               }
-               else
+               // 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)
                {
-                       // if the entity is not inside the pusher's final position, leave it alone
-                       if (!SV_Move_ClipToEntity(pusher, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, 0, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY).startsolid)
+                       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)
                                continue;
                }
 
@@ -1313,7 +1160,7 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
 
                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;
@@ -1323,8 +1170,15 @@ 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 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
-               if (SV_Move_ClipToEntity(pusher, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, 0, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY).startsolid)
+               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
                        vec3_t move2;
@@ -1334,7 +1188,8 @@ 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;
-                       if (SV_Move_ClipToEntity(pusher, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, 0, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY).startsolid)
+                       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
                                pusher->fields.server->solid = SOLID_NOT;
@@ -1343,7 +1198,8 @@ 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;
-                               if (SV_Move_ClipToEntity(pusher, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, 0, SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY).startsolid)
+                               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
 
@@ -1366,7 +1222,7 @@ 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);
@@ -1434,6 +1290,36 @@ 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,  3,
+        0,  0,  4,
+        0,  0,  5,
+        0,  0,  6,
+        0,  0,  7,
+        0,  0,  8,
+        0,  0,  9,
+        0,  0,  10,
+        0,  0,  11,
+        0,  0,  12,
+        0,  0,  13,
+        0,  0,  14,
+        0,  0,  15,
+        0,  0,  16,
+        0,  0,  17,
+};
+
 /*
 =============
 SV_CheckStuck
@@ -1444,71 +1330,54 @@ 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)
 {
-       int i, j, z;
-       vec3_t org;
+       int i;
 
        // if not stuck in a bmodel, just return
-       if (!SV_TestEntityPosition(ent))
+       if (!SV_TestEntityPosition(ent, vec3_origin))
                return;
 
-       VectorCopy (ent->fields.server->origin, org);
-
-       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;
+               }
+       }
 
-       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));
 }
@@ -1629,7 +1498,7 @@ int SV_TryUnstick (prvm_edict_t *ent, vec3_t oldvel)
                ent->fields.server->velocity[0] = oldvel[0];
                ent->fields.server->velocity[1] = oldvel[1];
                ent->fields.server->velocity[2] = 0;
-               clip = SV_FlyMove (ent, 0.1, NULL);
+               clip = SV_FlyMove (ent, 0.1, NULL, SV_GenericHitSuperContentsMask(ent));
 
                if (fabs(oldorg[1] - ent->fields.server->origin[1]) > 4
                 || fabs(oldorg[0] - ent->fields.server->origin[0]) > 4)
@@ -1658,7 +1527,7 @@ Only used by players
 */
 void SV_WalkMove (prvm_edict_t *ent)
 {
-       int clip, oldonground, originalmove_clip, originalmove_flags, originalmove_groundentity;
+       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;
 
@@ -1667,16 +1536,21 @@ void SV_WalkMove (prvm_edict_t *ent)
        if (sv.frametime <= 0)
                return;
 
+       hitsupercontentsmask = SV_GenericHitSuperContentsMask(ent);
+
        SV_CheckVelocity(ent);
 
        // do a regular slide move unless it looks like you ran into a step
        oldonground = (int)ent->fields.server->flags & FL_ONGROUND;
-       ent->fields.server->flags = (int)ent->fields.server->flags & ~FL_ONGROUND;
 
        VectorCopy (ent->fields.server->origin, start_origin);
        VectorCopy (ent->fields.server->velocity, start_velocity);
 
-       clip = SV_FlyMove (ent, sv.frametime, NULL);
+       clip = SV_FlyMove (ent, sv.frametime, 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);
 
@@ -1724,7 +1598,7 @@ void SV_WalkMove (prvm_edict_t *ent)
 
                // move forward
                ent->fields.server->velocity[2] = 0;
-               clip = SV_FlyMove (ent, sv.frametime, stepnormal);
+               clip = SV_FlyMove (ent, sv.frametime, stepnormal, hitsupercontentsmask);
                ent->fields.server->velocity[2] += start_velocity[2];
 
                SV_CheckVelocity(ent);
@@ -1753,8 +1627,8 @@ void SV_WalkMove (prvm_edict_t *ent)
                if (clip & 2 && sv_wallfriction.integer)
                        SV_WallFriction (ent, stepnormal);
        }
-       // skip out if stepdown is enabled, moving downward, not in water, and the move started onground and ended offground
-       else if (!(sv_gameplayfix_stepdown.integer && ent->fields.server->waterlevel < 2 && start_velocity[2] < (1.0 / 32.0) && oldonground && !((int)ent->fields.server->flags & FL_ONGROUND)))
+       // don't do the down move if stepdown is disabled, moving upward, not in water, or the move started offground or ended onground
+       else if (!sv_gameplayfix_stepdown.integer || ent->fields.server->waterlevel >= 3 || start_velocity[2] >= (1.0 / 32.0) || !oldonground || ((int)ent->fields.server->flags & FL_ONGROUND))
                return;
 
        // move down
@@ -1766,7 +1640,7 @@ void SV_WalkMove (prvm_edict_t *ent)
        if (downtrace.fraction < 1 && downtrace.plane.normal[2] > 0.7)
        {
                // this has been disabled so that you can't jump when you are stepping
-               // up while already jumping (also known as the Quake2 stair jump bug)
+               // up while already jumping (also known as the Quake2 double jump bug)
 #if 0
                // LordHavoc: disabled this check so you can walk on monsters/players
                //if (ent->fields.server->solid == SOLID_BSP)
@@ -2040,7 +1914,7 @@ void SV_Physics_Step (prvm_edict_t *ent)
                                ent->fields.server->flags -= FL_ONGROUND;
                                SV_AddGravity(ent);
                                SV_CheckVelocity(ent);
-                               SV_FlyMove(ent, sv.frametime, NULL);
+                               SV_FlyMove(ent, sv.frametime, NULL, SV_GenericHitSuperContentsMask(ent));
                                SV_LinkEdict(ent, true);
                        }
                }
@@ -2051,7 +1925,7 @@ void SV_Physics_Step (prvm_edict_t *ent)
 
                        SV_AddGravity(ent);
                        SV_CheckVelocity(ent);
-                       SV_FlyMove(ent, sv.frametime, NULL);
+                       SV_FlyMove(ent, sv.frametime, NULL, SV_GenericHitSuperContentsMask(ent));
                        SV_LinkEdict(ent, true);
 
                        // just hit ground
@@ -2116,7 +1990,7 @@ 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:
@@ -2125,20 +1999,75 @@ static void SV_Physics_Entity (prvm_edict_t *ent)
        }
 }
 
-void SV_Physics_ClientEntity (prvm_edict_t *ent)
+void SV_Physics_ClientMove(void)
 {
-       SV_ApplyClientMove();
+       prvm_edict_t *ent;
+       ent = host_client->edict;
+
+       // call player physics, this needs the proper frametime
+       prog->globals.server->frametime = sv.frametime;
+       SV_ClientThink();
+
+       // 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);
-       // LordHavoc: QuakeC replacement for SV_ClientThink (player movement)
-       if (prog->funcoffsets.SV_PlayerPhysics && sv_playerphysicsqc.integer)
+       // LordHavoc: a hack to ensure that the (rather silly) id1 quakec
+       // player_run/player_stand1 does not horribly malfunction if the
+       // velocity becomes a number that is both == 0 and != 0
+       // (sounds to me like NaN but to be absolutely safe...)
+       if (DotProduct(ent->fields.server->velocity, ent->fields.server->velocity) < 0.0001)
+               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, 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)
        {
-               prog->globals.server->time = sv.time;
-               prog->globals.server->self = PRVM_EDICT_TO_PROG(ent);
-               PRVM_ExecuteProgram (prog->funcoffsets.SV_PlayerPhysics, "QC function SV_PlayerPhysics is missing");
+               // angle fixing was requested by physics code...
+               // so store the current angles for later use
+               memcpy(host_client->fixangle_angles, ent->fields.server->angles, sizeof(host_client->fixangle_angles));
+               host_client->fixangle_angles_set = TRUE;
+
+               // and clear fixangle for the next frame
+               ent->fields.server->fixangle = 0;
        }
-       else
-               SV_ClientThink ();
+}
+
+void SV_Physics_ClientEntity(prvm_edict_t *ent)
+{
+       // don't do physics on disconnected clients, FrikBot relies on this
+       if (!host_client->spawned)
+       {
+               memset(&host_client->cmd, 0, sizeof(host_client->cmd));
+               return;
+       }
+
+       // 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);
        // LordHavoc: a hack to ensure that the (rather silly) id1 quakec
@@ -2147,6 +2076,7 @@ void SV_Physics_ClientEntity (prvm_edict_t *ent)
        // (sounds to me like NaN but to be absolutely safe...)
        if (DotProduct(ent->fields.server->velocity, ent->fields.server->velocity) < 0.0001)
                VectorClear(ent->fields.server->velocity);
+
        // call standard client pre-think
        prog->globals.server->time = sv.time;
        prog->globals.server->self = PRVM_EDICT_TO_PROG(ent);
@@ -2168,23 +2098,24 @@ void SV_Physics_ClientEntity (prvm_edict_t *ent)
                SV_Physics_Follow (ent);
                break;
        case MOVETYPE_NOCLIP:
-               if (SV_RunThink(ent))
-               {
-                       SV_CheckWater(ent);
-                       VectorMA(ent->fields.server->origin, sv.frametime, ent->fields.server->velocity, ent->fields.server->origin);
-                       VectorMA(ent->fields.server->angles, sv.frametime, ent->fields.server->avelocity, ent->fields.server->angles);
-               }
+               SV_RunThink(ent);
+               SV_CheckWater(ent);
+               VectorMA(ent->fields.server->origin, sv.frametime, ent->fields.server->velocity, ent->fields.server->origin);
+               VectorMA(ent->fields.server->angles, sv.frametime, ent->fields.server->avelocity, ent->fields.server->angles);
                break;
        case MOVETYPE_STEP:
                SV_Physics_Step (ent);
                break;
        case MOVETYPE_WALK:
-               if (SV_RunThink (ent))
+               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);
                        SV_WalkMove (ent);
+                       host_client->cmd.time = max(host_client->cmd.time, sv.time); // ignore client movement data for anything before NOW
                }
                break;
        case MOVETYPE_TOSS:
@@ -2192,31 +2123,45 @@ void SV_Physics_ClientEntity (prvm_edict_t *ent)
        case MOVETYPE_BOUNCEMISSILE:
        case MOVETYPE_FLYMISSILE:
                // regular thinking
-               if (SV_RunThink (ent))
-                       SV_Physics_Toss (ent);
+               SV_RunThink (ent);
+               SV_Physics_Toss (ent);
                break;
        case MOVETYPE_FLY:
-               if (SV_RunThink (ent))
-               {
-                       SV_CheckWater (ent);
-                       SV_WalkMove (ent);
-               }
+               SV_RunThink (ent);
+               SV_CheckWater (ent);
+               SV_WalkMove (ent);
                break;
        default:
                Con_Printf ("SV_Physics_ClientEntity: bad movetype %i\n", (int)ent->fields.server->movetype);
                break;
        }
 
+       // decrement the countdown variable used to decide when to go back to
+       // synchronous physics
+       if (host_client->clmovement_skipphysicsframes > 0)
+               host_client->clmovement_skipphysicsframes--;
+
        SV_CheckVelocity (ent);
 
-       // call standard player post-think
        SV_LinkEdict (ent, true);
 
        SV_CheckVelocity (ent);
 
+       // call standard player post-think
        prog->globals.server->time = sv.time;
        prog->globals.server->self = PRVM_EDICT_TO_PROG(ent);
        PRVM_ExecuteProgram (prog->globals.server->PlayerPostThink, "QC function PlayerPostThink is missing");
+
+       if(ent->fields.server->fixangle)
+       {
+               // angle fixing was requested by physics code...
+               // so store the current angles for later use
+               memcpy(host_client->fixangle_angles, ent->fields.server->angles, sizeof(host_client->fixangle_angles));
+               host_client->fixangle_angles_set = TRUE;
+
+               // and clear fixangle for the next frame
+               ent->fields.server->fixangle = 0;
+       }
 }
 
 /*
@@ -2249,19 +2194,8 @@ void SV_Physics (void)
 
        // run physics on the client entities
        for (i = 1, ent = PRVM_EDICT_NUM(i), host_client = svs.clients;i <= svs.maxclients;i++, ent = PRVM_NEXT_EDICT(ent), host_client++)
-       {
                if (!ent->priv.server->free)
-               {
-                       // don't do physics on disconnected clients, FrikBot relies on this
-                       if (!host_client->spawned)
-                               memset(&host_client->cmd, 0, sizeof(host_client->cmd));
-                       // don't run physics here if running asynchronously
-                       else if (host_client->clmovement_skipphysicsframes > 0)
-                               host_client->clmovement_skipphysicsframes--;
-                       else
                                SV_Physics_ClientEntity(ent);
-               }
-       }
 
        // run physics on all the non-client entities
        if (!sv_freezenonclients.integer)
@@ -2287,51 +2221,3 @@ void SV_Physics (void)
        if (!sv_freezenonclients.integer)
                sv.time += sv.frametime;
 }
-
-
-trace_t SV_Trace_Toss (prvm_edict_t *tossent, prvm_edict_t *ignore)
-{
-       int i;
-       float gravity;
-       vec3_t move, end;
-       vec3_t original_origin;
-       vec3_t original_velocity;
-       vec3_t original_angles;
-       vec3_t original_avelocity;
-       prvm_eval_t *val;
-       trace_t trace;
-
-       VectorCopy(tossent->fields.server->origin   , original_origin   );
-       VectorCopy(tossent->fields.server->velocity , original_velocity );
-       VectorCopy(tossent->fields.server->angles   , original_angles   );
-       VectorCopy(tossent->fields.server->avelocity, original_avelocity);
-
-       val = PRVM_EDICTFIELDVALUE(tossent, prog->fieldoffsets.gravity);
-       if (val != NULL && val->_float != 0)
-               gravity = val->_float;
-       else
-               gravity = 1.0;
-       gravity *= sv_gravity.value * 0.05;
-
-       for (i = 0;i < 200;i++) // LordHavoc: sanity check; never trace more than 10 seconds
-       {
-               SV_CheckVelocity (tossent);
-               tossent->fields.server->velocity[2] -= gravity;
-               VectorMA (tossent->fields.server->angles, 0.05, tossent->fields.server->avelocity, tossent->fields.server->angles);
-               VectorScale (tossent->fields.server->velocity, 0.05, move);
-               VectorAdd (tossent->fields.server->origin, move, end);
-               trace = SV_Move (tossent->fields.server->origin, tossent->fields.server->mins, tossent->fields.server->maxs, end, MOVE_NORMAL, tossent);
-               VectorCopy (trace.endpos, tossent->fields.server->origin);
-
-               if (trace.fraction < 1)
-                       break;
-       }
-
-       VectorCopy(original_origin   , tossent->fields.server->origin   );
-       VectorCopy(original_velocity , tossent->fields.server->velocity );
-       VectorCopy(original_angles   , tossent->fields.server->angles   );
-       VectorCopy(original_avelocity, tossent->fields.server->avelocity);
-
-       return trace;
-}
-