]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - sv_phys.c
changed a lot of Con_DPrint/Con_DPrintf calls to Con_Print/Con_Printf (non-technical...
[xonotic/darkplaces.git] / sv_phys.c
index ad5aa985f7181853696ffd1836b0acee5887610a..ee0239084cad2839d1bf1ad9229464e51337b3e8 100644 (file)
--- a/sv_phys.c
+++ b/sv_phys.c
@@ -48,6 +48,7 @@ cvar_t sv_stepheight = {CVAR_NOTIFY, "sv_stepheight", "18"};
 cvar_t sv_jumpstep = {CVAR_NOTIFY, "sv_jumpstep", "1"};
 cvar_t sv_wallfriction = {CVAR_NOTIFY, "sv_wallfriction", "1"};
 cvar_t sv_newflymove = {CVAR_NOTIFY, "sv_newflymove", "1"};
+cvar_t sv_freezenonclients = {CVAR_NOTIFY, "sv_freezenonclients", "0"};
 
 #define        MOVE_EPSILON    0.01
 
@@ -59,6 +60,7 @@ void SV_Phys_Init (void)
        Cvar_RegisterVariable(&sv_jumpstep);
        Cvar_RegisterVariable(&sv_wallfriction);
        Cvar_RegisterVariable(&sv_newflymove);
+       Cvar_RegisterVariable(&sv_freezenonclients);
 }
 
 /*
@@ -84,7 +86,7 @@ void SV_CheckAllEnts (void)
                        continue;
 
                if (SV_TestEntityPosition (check))
-                       Con_Print("entity in invalid position\n");
+                       Con_Print("entity in invalid position\n");
        }
 }
 
@@ -105,12 +107,12 @@ void SV_CheckVelocity (edict_t *ent)
        {
                if (IS_NAN(ent->v->velocity[i]))
                {
-                       Con_Printf ("Got a NaN velocity on %s\n", PR_GetString(ent->v->classname));
+                       Con_Printf("Got a NaN velocity on %s\n", PR_GetString(ent->v->classname));
                        ent->v->velocity[i] = 0;
                }
                if (IS_NAN(ent->v->origin[i]))
                {
-                       Con_Printf ("Got a NaN origin on %s\n", PR_GetString(ent->v->classname));
+                       Con_Printf("Got a NaN origin on %s\n", PR_GetString(ent->v->classname));
                        ent->v->origin[i] = 0;
                }
        }
@@ -153,7 +155,7 @@ qboolean SV_RunThink (edict_t *ent)
        pr_global_struct->time = thinktime;
        pr_global_struct->self = EDICT_TO_PROG(ent);
        pr_global_struct->other = EDICT_TO_PROG(sv.edicts);
-       PR_ExecuteProgram (ent->v->think, "NULL think function");
+       PR_ExecuteProgram (ent->v->think, "QC function self.think is missing");
        return !ent->e->free;
 }
 
@@ -176,14 +178,14 @@ void SV_Impact (edict_t *e1, edict_t *e2)
        {
                pr_global_struct->self = EDICT_TO_PROG(e1);
                pr_global_struct->other = EDICT_TO_PROG(e2);
-               PR_ExecuteProgram (e1->v->touch, "");
+               PR_ExecuteProgram (e1->v->touch, "QC function self.touch is missing");
        }
 
        if (e2->v->touch && e2->v->solid != SOLID_NOT)
        {
                pr_global_struct->self = EDICT_TO_PROG(e2);
                pr_global_struct->other = EDICT_TO_PROG(e1);
-               PR_ExecuteProgram (e2->v->touch, "");
+               PR_ExecuteProgram (e2->v->touch, "QC function self.touch is missing");
        }
 
        pr_global_struct->self = old_self;
@@ -230,204 +232,185 @@ If stepnormal is not NULL, the plane normal of any vertical wall hit will be sto
 #define MAX_CLIP_PLANES 20
 int SV_FlyMove (edict_t *ent, float time, float *stepnormal)
 {
-       if (sv_newflymove.integer)
+       int blocked, bumpcount;
+       edict_t *hackongroundentity;
+       int i, j, impact, numplanes;
+       float d, time_left;
+       vec3_t dir, end, planes[MAX_CLIP_PLANES], primal_velocity, original_velocity, new_velocity;
+       trace_t trace;
+       blocked = 0;
+       VectorCopy(ent->v->velocity, original_velocity);
+       VectorCopy(ent->v->velocity, primal_velocity);
+       numplanes = 0;
+       time_left = time;
+       hackongroundentity = NULL;
+       for (bumpcount = 0;bumpcount < 8;bumpcount++)
        {
-               int blocked, impact, bumpcount;
-               vec3_t end, primal_velocity;
-               trace_t trace;
-
-               blocked = 0;
-               VectorCopy (ent->v->velocity, primal_velocity);
+               if (!ent->v->velocity[0] && !ent->v->velocity[1] && !ent->v->velocity[2])
+                       break;
 
-               for (bumpcount = 0;bumpcount < 4;bumpcount++)
+               VectorMA(ent->v->origin, time_left, ent->v->velocity, end);
+               trace = SV_Move(ent->v->origin, ent->v->mins, ent->v->maxs, end, MOVE_NORMAL, ent);
+#if 0
+               //if (trace.fraction < 0.002)
                {
-                       if (!ent->v->velocity[0] && !ent->v->velocity[1] && !ent->v->velocity[2])
-                               break;
-
-                       VectorMA(ent->v->origin, time, ent->v->velocity, end);
-                       trace = SV_Move (ent->v->origin, ent->v->mins, ent->v->maxs, end, MOVE_NORMAL, ent);
-                       //Con_Printf("trace %f %f %f : %f : %f %f %f\n", trace.endpos[0], trace.endpos[1], trace.endpos[2], trace.fraction, trace.plane.normal[0], trace.plane.normal[1], trace.plane.normal[2]);
-
-                       if (trace.allsolid)
-                       {
-                               // LordHavoc: note: this code is what makes entities stick in place if embedded in another object (which can be the world)
-                               // entity is trapped in another solid
-                               VectorClear(ent->v->velocity);
-                               return 3;
-                       }
-
-                       if (trace.fraction > 0)
+#if 1
+                       vec3_t start;
+                       trace_t testtrace;
+                       VectorCopy(ent->v->origin, start);
+                       start[2] += 3;//0.03125;
+                       VectorMA(ent->v->origin, time_left, ent->v->velocity, end);
+                       end[2] += 3;//0.03125;
+                       testtrace = SV_Move(start, ent->v->mins, ent->v->maxs, end, MOVE_NORMAL, ent);
+                       if (trace.fraction < testtrace.fraction && !testtrace.startsolid && (testtrace.fraction == 1 || DotProduct(trace.plane.normal, ent->v->velocity) < DotProduct(testtrace.plane.normal, ent->v->velocity)))
                        {
-                               // actually covered some distance
-                               VectorCopy (trace.endpos, ent->v->origin);
+                               Con_Printf("got further (new %f > old %f)\n", testtrace.fraction, trace.fraction);
+                               trace = testtrace;
                        }
-
-                       // break if it moved the entire distance
-                       if (trace.fraction == 1)
-                               break;
-
-                       if (!trace.ent)
-                               Host_Error ("SV_FlyMove: !trace.ent");
-
-                       if ((int) ent->v->flags & FL_ONGROUND)
+#endif
+#if 0
+                       //j = -1;
+                       for (i = 0;i < numplanes;i++)
                        {
-                               if (ent->v->groundentity == EDICT_TO_PROG(trace.ent))
-                                       impact = false;
-                               else
+                               VectorCopy(ent->v->origin, start);
+                               VectorMA(ent->v->origin, time_left, ent->v->velocity, end);
+                               VectorMA(start, 3, planes[i], start);
+                               VectorMA(end, 3, planes[i], end);
+                               testtrace = SV_Move(start, ent->v->mins, ent->v->maxs, end, MOVE_NORMAL, ent);
+                               if (trace.fraction < testtrace.fraction)
                                {
-                                       ent->v->flags = (int)ent->v->flags & ~FL_ONGROUND;
-                                       impact = true;
+                                       trace = testtrace;
+                                       VectorCopy(start, ent->v->origin);
+                                       //j = i;
                                }
                        }
-                       else
-                               impact = true;
-
-                       if (trace.plane.normal[2] > 0.7)
-                       {
-                               // floor
-                               blocked |= 1;
-                               ent->v->flags = (int)ent->v->flags | FL_ONGROUND;
-                               ent->v->groundentity = EDICT_TO_PROG(trace.ent);
-                       }
-                       if (!trace.plane.normal[2])
-                       {
-                               // step
-                               blocked |= 2;
-                               // save the trace for player extrafriction
-                               if (stepnormal)
-                                       VectorCopy(trace.plane.normal, stepnormal);
-                       }
-
-                       // run the impact function
-                       if (impact)
-                       {
-                               SV_Impact (ent, trace.ent);
-
-                               // break if removed by the impact function
-                               if (ent->e->free)
-                                       break;
-                       }
-
-                       time *= 1 - trace.fraction;
-
-                       ClipVelocity (ent->v->velocity, trace.plane.normal, ent->v->velocity, 1);
+                       //if (j >= 0)
+                       //      VectorAdd(ent->v->origin, planes[j], start);
+#endif
                }
+#endif
 
-               return blocked;
-       }
-       else
-       {
-               int i, j, blocked, impact, numplanes, bumpcount, numbumps;
-               float d, time_left;
-               vec3_t dir, end, planes[MAX_CLIP_PLANES], primal_velocity, original_velocity, new_velocity;
-               trace_t trace;
-
-               numbumps = 4;
-
-               blocked = 0;
-               VectorCopy (ent->v->velocity, original_velocity);
-               VectorCopy (ent->v->velocity, primal_velocity);
-               numplanes = 0;
-
-               time_left = time;
+#if 0
+               Con_Printf("entity %i bump %i: velocity %f %f %f trace %f", ent - sv.edicts, bumpcount, ent->v->velocity[0], ent->v->velocity[1], ent->v->velocity[2], trace.fraction);
+               if (trace.fraction < 1)
+                       Con_Printf(" : %f %f %f", trace.plane.normal[0], trace.plane.normal[1], trace.plane.normal[2]);
+               Con_Print("\n");
+#endif
 
-               for (bumpcount=0 ; bumpcount<numbumps ; bumpcount++)
+               /*
+               if (trace.startsolid)
                {
-                       if (!ent->v->velocity[0] && !ent->v->velocity[1] && !ent->v->velocity[2])
-                               break;
-
-                       for (i=0 ; i<3 ; i++)
-                               end[i] = ent->v->origin[i] + time_left * ent->v->velocity[i];
-
-                       trace = SV_Move (ent->v->origin, ent->v->mins, ent->v->maxs, end, MOVE_NORMAL, ent);
-
-                       if (trace.allsolid)
-                       {
-                               // LordHavoc: note: this code is what makes entities stick in place if embedded in another object (which can be the world)
-                               // entity is trapped in another solid
-                               VectorClear(ent->v->velocity);
-                               return 3;
-                       }
-
-                       if (trace.fraction > 0)
-                       {
-                               // actually covered some distance
-                               VectorCopy (trace.endpos, ent->v->origin);
-                               VectorCopy (ent->v->velocity, original_velocity);
-                               numplanes = 0;
-                       }
+                       // LordHavoc: note: this code is what makes entities stick in place if embedded in another object (which can be the world)
+                       // entity is trapped in another solid
+                       VectorClear(ent->v->velocity);
+                       return 3;
+               }
+               */
 
-                       // break if it moved the entire distance
-                       if (trace.fraction == 1)
-                               break;
+               // break if it moved the entire distance
+               if (trace.fraction == 1)
+               {
+                       VectorCopy(trace.endpos, ent->v->origin);
+                       break;
+               }
 
-                       if (!trace.ent)
-                               Host_Error ("SV_FlyMove: !trace.ent");
+               if (!trace.ent)
+                       Host_Error("SV_FlyMove: !trace.ent");
 
-                       if ((int) ent->v->flags & FL_ONGROUND)
-                       {
-                               if (ent->v->groundentity == EDICT_TO_PROG(trace.ent))
-                                       impact = false;
-                               else
-                               {
-                                       ent->v->flags = (int)ent->v->flags & ~FL_ONGROUND;
-                                       impact = true;
-                               }
-                       }
+               if ((int) ent->v->flags & FL_ONGROUND)
+               {
+                       if (ent->v->groundentity == EDICT_TO_PROG(trace.ent))
+                               impact = false;
                        else
+                       {
+                               ent->v->flags = (int)ent->v->flags & ~FL_ONGROUND;
                                impact = true;
+                       }
+               }
+               else
+                       impact = true;
 
+               if (trace.plane.normal[2])
+               {
                        if (trace.plane.normal[2] > 0.7)
                        {
                                // floor
                                blocked |= 1;
-                               ent->v->flags = (int)ent->v->flags | FL_ONGROUND;
+                               ent->v->flags = (int)ent->v->flags | FL_ONGROUND;
                                ent->v->groundentity = EDICT_TO_PROG(trace.ent);
                        }
-                       if (!trace.plane.normal[2])
-                       {
-                               // step
-                               blocked |= 2;
-                               // save the trace for player extrafriction
-                               if (stepnormal)
-                                       VectorCopy(trace.plane.normal, stepnormal);
-                       }
+                       else if (trace.fraction < 0.001)
+                               hackongroundentity = trace.ent;
+               }
+               else
+               {
+                       // step
+                       blocked |= 2;
+                       // save the trace for player extrafriction
+                       if (stepnormal)
+                               VectorCopy(trace.plane.normal, stepnormal);
+               }
 
-                       // run the impact function
-                       if (impact)
-                       {
-                               SV_Impact (ent, trace.ent);
+               if (trace.fraction >= 0.001)
+               {
+                       // actually covered some distance
+                       VectorCopy(trace.endpos, ent->v->origin);
+                       VectorCopy(ent->v->velocity, original_velocity);
+                       numplanes = 0;
+               }
 
-                               // break if removed by the impact function
-                               if (ent->e->free)
-                                       break;
-                       }
+               // run the impact function
+               if (impact)
+               {
+                       SV_Impact(ent, trace.ent);
 
+                       // break if removed by the impact function
+                       if (ent->e->free)
+                               break;
+               }
 
-                       time_left -= time_left * trace.fraction;
+               time_left *= 1 - trace.fraction;
 
-                       // clipped to another plane
-                       if (numplanes >= MAX_CLIP_PLANES)
-                       {
-                               // this shouldn't really happen
-                               VectorClear(ent->v->velocity);
-                               return 3;
-                       }
+               // clipped to another plane
+               if (numplanes >= MAX_CLIP_PLANES)
+               {
+                       // this shouldn't really happen
+                       VectorClear(ent->v->velocity);
+                       blocked = 3;
+                       break;
+               }
+
+               /*
+               for (i = 0;i < numplanes;i++)
+                       if (DotProduct(trace.plane.normal, planes[i]) > 0.99)
+                               break;
+               if (i < numplanes)
+               {
+                       VectorAdd(ent->v->velocity, trace.plane.normal, ent->v->velocity);
+                       continue;
+               }
+               */
 
-                       VectorCopy (trace.plane.normal, planes[numplanes]);
-                       numplanes++;
+               VectorCopy(trace.plane.normal, planes[numplanes]);
+               numplanes++;
 
+               if (sv_newflymove.integer)
+                       ClipVelocity(ent->v->velocity, trace.plane.normal, ent->v->velocity, 1);
+               else
+               {
                        // modify original_velocity so it parallels all of the clip planes
-                       for (i=0 ; i<numplanes ; i++)
+                       for (i = 0;i < numplanes;i++)
                        {
-                               ClipVelocity (original_velocity, planes[i], new_velocity, 1);
-                               for (j=0 ; j<numplanes ; j++)
+                               ClipVelocity(original_velocity, planes[i], new_velocity, 1);
+                               for (j = 0;j < numplanes;j++)
+                               {
                                        if (j != i)
                                        {
                                                // not ok
-                                               if (DotProduct (new_velocity, planes[j]) < 0)
+                                               if (DotProduct(new_velocity, planes[j]) < 0)
                                                        break;
                                        }
+                               }
                                if (j == numplanes)
                                        break;
                        }
@@ -435,7 +418,7 @@ int SV_FlyMove (edict_t *ent, float time, float *stepnormal)
                        if (i != numplanes)
                        {
                                // go along this plane
-                               VectorCopy (new_velocity, ent->v->velocity);
+                               VectorCopy(new_velocity, ent->v->velocity);
                        }
                        else
                        {
@@ -443,28 +426,67 @@ int SV_FlyMove (edict_t *ent, float time, float *stepnormal)
                                if (numplanes != 2)
                                {
                                        VectorClear(ent->v->velocity);
-                                       return 7;
+                                       blocked = 7;
+                                       break;
                                }
-                               CrossProduct (planes[0], planes[1], dir);
+                               CrossProduct(planes[0], planes[1], dir);
                                // LordHavoc: thanks to taniwha of QuakeForge for pointing out this fix for slowed falling in corners
                                VectorNormalize(dir);
-                               d = DotProduct (dir, ent->v->velocity);
-                               VectorScale (dir, d, ent->v->velocity);
+                               d = DotProduct(dir, ent->v->velocity);
+                               VectorScale(dir, d, ent->v->velocity);
                        }
+               }
 
-                       // if original velocity is against the original velocity,
-                       // stop dead to avoid tiny occilations in sloping corners
-                       if (DotProduct (ent->v->velocity, primal_velocity) <= 0)
-                       {
-                               VectorClear(ent->v->velocity);
-                               return blocked;
-                       }
+               // if original velocity is against the original velocity,
+               // stop dead to avoid tiny occilations in sloping corners
+               if (DotProduct(ent->v->velocity, primal_velocity) <= 0)
+               {
+                       VectorClear(ent->v->velocity);
+                       break;
                }
+       }
+
+       //Con_Printf("entity %i final: blocked %i velocity %f %f %f\n", ent - sv.edicts, blocked, ent->v->velocity[0], ent->v->velocity[1], ent->v->velocity[2]);
 
-               return blocked;
+       /*
+       // FIXME: this doesn't work well at all, find another solution
+       // if player is ontop of a non-onground floor and made no progress,
+       // set onground anyway (this tends to happen if standing in a wedge)
+       if (bumpcount == 8 && hackongroundentity)
+       {
+               blocked |= 1;
+               ent->v->flags = (int)ent->v->flags | FL_ONGROUND;
+               ent->v->groundentity = EDICT_TO_PROG(hackongroundentity);
        }
+       */
+       
+       /*
+       if ((blocked & 1) == 0 && bumpcount > 1)
+       {
+               // LordHavoc: fix the 'fall to your death in a wedge corner' glitch
+               // flag ONGROUND if there's ground under it
+               trace = SV_Move(ent->v->origin, ent->v->mins, ent->v->maxs, end, MOVE_NORMAL, ent);
+       }
+       */
+       return blocked;
 }
 
+int SV_SetOnGround (edict_t *ent)
+{
+       vec3_t end;
+       trace_t trace;
+       if ((int)ent->v->flags & FL_ONGROUND)
+               return 1;
+       VectorSet(end, ent->v->origin[0], ent->v->origin[1], ent->v->origin[2] - 1);
+       trace = SV_Move(ent->v->origin, ent->v->mins, ent->v->maxs, end, MOVE_NORMAL, ent);
+       if (trace.fraction < 1 && trace.plane.normal[2] >= 0.7)
+       {
+               ent->v->flags = (int)ent->v->flags | FL_ONGROUND;
+               ent->v->groundentity = EDICT_TO_PROG(trace.ent);
+               return 1;
+       }
+       return 0;
+}
 
 /*
 ============
@@ -501,24 +523,24 @@ SV_PushEntity
 Does not change the entities velocity at all
 ============
 */
-trace_t SV_PushEntity (edict_t *ent, vec3_t push, vec3_t pushangles)
+trace_t SV_PushEntity (edict_t *ent, vec3_t push)
 {
+       int type;
        trace_t trace;
        vec3_t end;
 
        VectorAdd (ent->v->origin, push, end);
 
        if (ent->v->movetype == MOVETYPE_FLYMISSILE)
-               trace = SV_Move (ent->v->origin, ent->v->mins, ent->v->maxs, end, MOVE_MISSILE, ent);
+               type = MOVE_MISSILE;
        else if (ent->v->solid == SOLID_TRIGGER || ent->v->solid == SOLID_NOT)
-               // only clip against bmodels
-               trace = SV_Move (ent->v->origin, ent->v->mins, ent->v->maxs, end, MOVE_NOMONSTERS, ent);
+               type = MOVE_NOMONSTERS; // only clip against bmodels
        else
-               trace = SV_Move (ent->v->origin, ent->v->mins, ent->v->maxs, end, MOVE_NORMAL, ent);
+               type = MOVE_NORMAL;
+
+       trace = SV_Move (ent->v->origin, ent->v->mins, ent->v->maxs, end, type, ent);
 
        VectorCopy (trace.endpos, ent->v->origin);
-       // FIXME: turn players specially
-       ent->v->angles[1] += trace.fraction * pushangles[1];
        SV_LinkEdict (ent, true);
 
        if (trace.ent && (!((int)ent->v->flags & FL_ONGROUND) || ent->v->groundentity != EDICT_TO_PROG(trace.ent)))
@@ -544,6 +566,12 @@ void SV_PushMove (edict_t *pusher, float movetime)
        model_t *pushermodel;
        trace_t trace;
 
+       if (!pusher->v->velocity[0] && !pusher->v->velocity[1] && !pusher->v->velocity[2] && !pusher->v->avelocity[0] && !pusher->v->avelocity[1] && !pusher->v->avelocity[2])
+       {
+               pusher->v->ltime += movetime;
+               return;
+       }
+
        switch ((int) pusher->v->solid)
        {
        // LordHavoc: valid pusher types
@@ -557,20 +585,22 @@ void SV_PushMove (edict_t *pusher, float movetime)
        case SOLID_TRIGGER:
                VectorMA (pusher->v->origin, movetime, pusher->v->velocity, pusher->v->origin);
                VectorMA (pusher->v->angles, movetime, pusher->v->avelocity, pusher->v->angles);
+               pusher->v->angles[0] -= 360.0 * floor(pusher->v->angles[0] * (1.0 / 360.0));
+               pusher->v->angles[1] -= 360.0 * floor(pusher->v->angles[1] * (1.0 / 360.0));
+               pusher->v->angles[2] -= 360.0 * floor(pusher->v->angles[2] * (1.0 / 360.0));
                pusher->v->ltime += movetime;
                SV_LinkEdict (pusher, false);
                return;
        default:
-               Host_Error("SV_PushMove: unrecognized solid type %f\n", pusher->v->solid);
-       }
-       if (!pusher->v->velocity[0] && !pusher->v->velocity[1] && !pusher->v->velocity[2] && !pusher->v->avelocity[0] && !pusher->v->avelocity[1] && !pusher->v->avelocity[2])
-       {
-               pusher->v->ltime += movetime;
+               Con_Printf("SV_PushMove: unrecognized solid type %f\n", pusher->v->solid);
                return;
        }
        index = (int) pusher->v->modelindex;
        if (index < 1 || index >= MAX_MODELS)
-               Host_Error("SV_PushMove: invalid modelindex %f\n", pusher->v->modelindex);
+       {
+               Con_Printf("SV_PushMove: invalid modelindex %f\n", pusher->v->modelindex);
+               return;
+       }
        pushermodel = sv.models[index];
 
        movetime2 = movetime;
@@ -651,7 +681,8 @@ void SV_PushMove (edict_t *pusher, float movetime)
                if (check->v->movetype == MOVETYPE_PUSH
                 || check->v->movetype == MOVETYPE_NONE
                 || check->v->movetype == MOVETYPE_FOLLOW
-                || check->v->movetype == MOVETYPE_NOCLIP)
+                || check->v->movetype == MOVETYPE_NOCLIP
+                || check->v->movetype == MOVETYPE_FAKEPUSH)
                        continue;
 
                // if the entity is standing on the pusher, it will definitely be moved
@@ -665,12 +696,11 @@ void SV_PushMove (edict_t *pusher, float movetime)
                         || check->v->absmax[2] <= mins[2])
                                continue;
 
-                       trace = SV_ClipMoveToEntity (pusher, check->v->origin, check->v->mins, check->v->maxs, check->v->origin);
-                       if (!trace.startsolid)
+                       if (!SV_ClipMoveToEntity(pusher, check->v->origin, check->v->mins, check->v->maxs, check->v->origin).startsolid)
                                continue;
                }
 
-               if (forward[0] < 0.999f) // quick way to check if any rotation is used
+               if (forward[0] != 1) // quick way to check if any rotation is used
                {
                        VectorSubtract (check->v->origin, pusher->v->origin, org);
                        org2[0] = DotProduct (org, forward);
@@ -692,18 +722,20 @@ void SV_PushMove (edict_t *pusher, float movetime)
 
                // try moving the contacted entity
                pusher->v->solid = SOLID_NOT;
-               trace = SV_PushEntity (check, move, moveangle);
+               trace = SV_PushEntity (check, move);
+               // FIXME: turn players specially
+               check->v->angles[1] += trace.fraction * moveangle[1];
                pusher->v->solid = savesolid; // was SOLID_BSP
 
                // if it is still inside the pusher, block
-               if (SV_TestEntityPosition (check))
+               if (SV_ClipMoveToEntity(pusher, check->v->origin, check->v->mins, check->v->maxs, check->v->origin).startsolid)
                {
                        // try moving the contacted entity a tiny bit further to account for precision errors
                        pusher->v->solid = SOLID_NOT;
                        VectorScale(move, 0.1, move);
-                       trace = SV_PushEntity (check, move, vec3_origin);
+                       SV_PushEntity (check, move);
                        pusher->v->solid = savesolid;
-                       if (SV_TestEntityPosition (check))
+                       if (SV_ClipMoveToEntity(pusher, check->v->origin, check->v->mins, check->v->maxs, check->v->origin).startsolid)
                        {
                                // still inside pusher, so it's really blocked
 
@@ -737,12 +769,15 @@ void SV_PushMove (edict_t *pusher, float movetime)
                                {
                                        pr_global_struct->self = EDICT_TO_PROG(pusher);
                                        pr_global_struct->other = EDICT_TO_PROG(check);
-                                       PR_ExecuteProgram (pusher->v->blocked, "");
+                                       PR_ExecuteProgram (pusher->v->blocked, "QC function self.blocked is missing");
                                }
-                               return;
+                               break;
                        }
                }
        }
+       pusher->v->angles[0] -= 360.0 * floor(pusher->v->angles[0] * (1.0 / 360.0));
+       pusher->v->angles[1] -= 360.0 * floor(pusher->v->angles[1] * (1.0 / 360.0));
+       pusher->v->angles[2] -= 360.0 * floor(pusher->v->angles[2] * (1.0 / 360.0));
 }
 
 /*
@@ -777,7 +812,7 @@ void SV_Physics_Pusher (edict_t *ent)
                pr_global_struct->time = sv.time;
                pr_global_struct->self = EDICT_TO_PROG(ent);
                pr_global_struct->other = EDICT_TO_PROG(sv.edicts);
-               PR_ExecuteProgram (ent->v->think, "NULL think function");
+               PR_ExecuteProgram (ent->v->think, "QC function self.think is missing");
        }
 }
 
@@ -813,7 +848,7 @@ void SV_CheckStuck (edict_t *ent)
        VectorCopy (ent->v->oldorigin, ent->v->origin);
        if (!SV_TestEntityPosition(ent))
        {
-               Con_DPrint("Unstuck.\n");
+               Con_DPrint("Unstuck.\n");
                SV_LinkEdict (ent, true);
                return;
        }
@@ -827,14 +862,14 @@ void SV_CheckStuck (edict_t *ent)
                                ent->v->origin[2] = org[2] + z;
                                if (!SV_TestEntityPosition(ent))
                                {
-                                       Con_DPrint("Unstuck.\n");
+                                       Con_DPrint("Unstuck.\n");
                                        SV_LinkEdict (ent, true);
                                        return;
                                }
                        }
 
        VectorCopy (org, ent->v->origin);
-       Con_DPrint("player is stuck.\n");
+       Con_DPrint("player is stuck.\n");
 }
 
 
@@ -854,18 +889,18 @@ qboolean SV_CheckWater (edict_t *ent)
 
        ent->v->waterlevel = 0;
        ent->v->watertype = CONTENTS_EMPTY;
-       cont = sv.worldmodel->brushq1.PointContents(sv.worldmodel, point);
+       cont = SV_PointQ1Contents(point);
        if (cont <= CONTENTS_WATER)
        {
                ent->v->watertype = cont;
                ent->v->waterlevel = 1;
                point[2] = ent->v->origin[2] + (ent->v->mins[2] + ent->v->maxs[2])*0.5;
-               cont = sv.worldmodel->brushq1.PointContents(sv.worldmodel, point);
+               cont = SV_PointQ1Contents(point);
                if (cont <= CONTENTS_WATER)
                {
                        ent->v->waterlevel = 2;
                        point[2] = ent->v->origin[2] + ent->v->view_ofs[2];
-                       cont = sv.worldmodel->brushq1.PointContents(sv.worldmodel, point);
+                       cont = SV_PointQ1Contents(point);
                        if (cont <= CONTENTS_WATER)
                                ent->v->waterlevel = 3;
                }
@@ -932,7 +967,7 @@ int SV_TryUnstick (edict_t *ent, vec3_t oldvel)
                        case 7: dir[0] = -2; dir[1] = -2; break;
                }
 
-               SV_PushEntity (ent, dir, vec3_origin);
+               SV_PushEntity (ent, dir);
 
                // retry the original move
                ent->v->velocity[0] = oldvel[0];
@@ -942,7 +977,10 @@ int SV_TryUnstick (edict_t *ent, vec3_t oldvel)
 
                if (fabs(oldorg[1] - ent->v->origin[1]) > 4
                 || fabs(oldorg[0] - ent->v->origin[0]) > 4)
+               {
+                       Con_DPrint("TryUnstick - success.\n");
                        return clip;
+               }
 
                // go back to the original pos and try again
                VectorCopy (oldorg, ent->v->origin);
@@ -950,6 +988,7 @@ int SV_TryUnstick (edict_t *ent, vec3_t oldvel)
 
        // still not moving
        VectorClear (ent->v->velocity);
+       Con_DPrint("TryUnstick - failure.\n");
        return 7;
 }
 
@@ -962,96 +1001,132 @@ Only used by players
 */
 void SV_WalkMove (edict_t *ent)
 {
-       int clip, oldonground;
-       vec3_t upmove, downmove, oldorg, oldvel, nosteporg, nostepvel, stepnormal;
+       int clip, oldonground, originalmove_clip, originalmove_flags, originalmove_groundentity;
+       vec3_t upmove, downmove, start_origin, start_velocity, stepnormal, originalmove_origin, originalmove_velocity;
        trace_t downtrace;
 
+       SV_CheckVelocity(ent);
+
        // do a regular slide move unless it looks like you ran into a step
        oldonground = (int)ent->v->flags & FL_ONGROUND;
        ent->v->flags = (int)ent->v->flags & ~FL_ONGROUND;
 
-       VectorCopy (ent->v->origin, oldorg);
-       VectorCopy (ent->v->velocity, oldvel);
+       VectorCopy (ent->v->origin, start_origin);
+       VectorCopy (ent->v->velocity, start_velocity);
 
        clip = SV_FlyMove (ent, sv.frametime, NULL);
 
-       // if move didn't block on a step, return
-       if ( !(clip & 2) )
+       SV_SetOnGround (ent);
+       SV_CheckVelocity(ent);
+
+       VectorCopy(ent->v->origin, originalmove_origin);
+       VectorCopy(ent->v->velocity, originalmove_velocity);
+       originalmove_clip = clip;
+       originalmove_flags = (int)ent->v->flags;
+       originalmove_groundentity = ent->v->groundentity;
+
+       if ((int)ent->v->flags & FL_WATERJUMP)
                return;
 
-       if (ent->v->movetype != MOVETYPE_FLY)
+       if (sv_nostep.integer)
+               return;
+       
+       // if move didn't block on a step, return
+       if (clip & 2)
        {
-               if (!oldonground && ent->v->waterlevel == 0 && !sv_jumpstep.integer)
-                       // don't stair up while jumping
+               // if move was not trying to move into the step, return
+               if (fabs(start_velocity[0]) < 0.03125 && fabs(start_velocity[1]) < 0.03125)
                        return;
-
-               if (ent->v->movetype != MOVETYPE_WALK)
-                       // gibbed by a trigger
+       
+               if (ent->v->movetype != MOVETYPE_FLY)
+               {
+                       // return if gibbed by a trigger
+                       if (ent->v->movetype != MOVETYPE_WALK)
+                               return;
+       
+                       // only step up while jumping if that is enabled
+                       if (!(sv_jumpstep.integer && sv_gameplayfix_stepwhilejumping.integer))
+                               if (!oldonground && ent->v->waterlevel == 0)
+                                       return;
+               }
+       
+               // try moving up and forward to go up a step
+               // back to start pos
+               VectorCopy (start_origin, ent->v->origin);
+               VectorCopy (start_velocity, ent->v->velocity);
+       
+               // move up
+               VectorClear (upmove);
+               upmove[2] = sv_stepheight.value;
+               // FIXME: don't link?
+               SV_PushEntity(ent, upmove);
+       
+               // move forward
+               ent->v->velocity[2] = 0;
+               clip = SV_FlyMove (ent, sv.frametime, stepnormal);
+               ent->v->velocity[2] += start_velocity[2];
+       
+               SV_CheckVelocity(ent);
+       
+               // check for stuckness, possibly due to the limited precision of floats
+               // in the clipping hulls
+               if (clip
+                && fabs(originalmove_origin[1] - ent->v->origin[1]) < 0.03125
+                && fabs(originalmove_origin[0] - ent->v->origin[0]) < 0.03125)
+               {
+                       //Con_Printf("wall\n");
+                       // stepping up didn't make any progress, revert to original move
+                       VectorCopy(originalmove_origin, ent->v->origin);
+                       VectorCopy(originalmove_velocity, ent->v->velocity);
+                       //clip = originalmove_clip;
+                       ent->v->flags = originalmove_flags;
+                       ent->v->groundentity = originalmove_groundentity; 
+                       // now try to unstick if needed
+                       //clip = SV_TryUnstick (ent, oldvel);
                        return;
-       }
+               }
 
-       if (sv_nostep.integer)
-               return;
+               //Con_Printf("step - ");
 
-       if ( (int)ent->v->flags & FL_WATERJUMP )
+               // extra friction based on view angle
+               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->v->waterlevel < 2 && start_velocity[2] < (1.0 / 32.0) && oldonground && !((int)ent->v->flags & FL_ONGROUND)))
                return;
 
-       VectorCopy (ent->v->origin, nosteporg);
-       VectorCopy (ent->v->velocity, nostepvel);
-
-       // try moving up and forward to go up a step
-       // back to start pos
-       VectorCopy (oldorg, ent->v->origin);
-
-       VectorClear (upmove);
-       VectorClear (downmove);
-       upmove[2] = sv_stepheight.value;
-       downmove[2] = -sv_stepheight.value + oldvel[2]*sv.frametime;
-
-       // move up
-       // FIXME: don't link?
-       SV_PushEntity (ent, upmove, vec3_origin);
-
-       // move forward
-       ent->v->velocity[0] = oldvel[0];
-       ent->v->velocity[1] = oldvel[1];
-       ent->v->velocity[2] = 0;
-       clip = SV_FlyMove (ent, sv.frametime, stepnormal);
-       ent->v->velocity[2] += oldvel[2];
-
-       // check for stuckness, possibly due to the limited precision of floats
-       // in the clipping hulls
-       if (clip
-        && fabs(oldorg[1] - ent->v->origin[1]) < 0.03125
-        && fabs(oldorg[0] - ent->v->origin[0]) < 0.03125)
-               // stepping up didn't make any progress
-               clip = SV_TryUnstick (ent, oldvel);
-
-       // extra friction based on view angle
-       if (clip & 2 && sv_wallfriction.integer)
-               SV_WallFriction (ent, stepnormal);
-
        // move down
+       VectorClear (downmove);
+       downmove[2] = -sv_stepheight.value + start_velocity[2]*sv.frametime;
        // FIXME: don't link?
-       downtrace = SV_PushEntity (ent, downmove, vec3_origin);
+       downtrace = SV_PushEntity (ent, downmove);
 
-       if (downtrace.plane.normal[2] > 0.7)
+       if (downtrace.fraction < 1 && downtrace.plane.normal[2] > 0.7)
        {
-               // LordHavoc: disabled this so you can walk on monsters/players
+               // LordHavoc: disabled this check so you can walk on monsters/players
                //if (ent->v->solid == SOLID_BSP)
                {
+                       //Con_Printf("onground\n");
                        ent->v->flags = (int)ent->v->flags | FL_ONGROUND;
                        ent->v->groundentity = EDICT_TO_PROG(downtrace.ent);
                }
        }
        else
        {
+               //Con_Printf("slope\n");
                // if the push down didn't end up on good ground, use the move without
                // the step up.  This happens near wall / slope combinations, and can
                // cause the player to hop up higher on a slope too steep to climb
-               VectorCopy (nosteporg, ent->v->origin);
-               VectorCopy (nostepvel, ent->v->velocity);
+               VectorCopy(originalmove_origin, ent->v->origin);
+               VectorCopy(originalmove_velocity, ent->v->velocity);
+               //clip = originalmove_clip;
+               ent->v->flags = originalmove_flags;
+               ent->v->groundentity = originalmove_groundentity; 
        }
+
+       SV_SetOnGround (ent);
+       SV_CheckVelocity(ent);
 }
 
 //============================================================================
@@ -1100,25 +1175,6 @@ void SV_Physics_Follow (edict_t *ent)
        SV_LinkEdict (ent, true);
 }
 
-/*
-=============
-SV_Physics_Noclip
-
-A moving object that doesn't obey physics
-=============
-*/
-void SV_Physics_Noclip (edict_t *ent)
-{
-       // regular thinking
-       if (!SV_RunThink (ent))
-               return;
-
-       VectorMA (ent->v->angles, sv.frametime, ent->v->avelocity, ent->v->angles);
-       VectorMA (ent->v->origin, sv.frametime, ent->v->velocity, ent->v->origin);
-
-       SV_LinkEdict (ent, false);
-}
-
 /*
 ==============================================================================
 
@@ -1136,7 +1192,7 @@ SV_CheckWaterTransition
 void SV_CheckWaterTransition (edict_t *ent)
 {
        int cont;
-       cont = sv.worldmodel->brushq1.PointContents(sv.worldmodel, ent->v->origin);
+       cont = SV_PointQ1Contents(ent->v->origin);
        if (!ent->v->watertype)
        {
                // just spawned here
@@ -1145,23 +1201,19 @@ void SV_CheckWaterTransition (edict_t *ent)
                return;
        }
 
+       // check if the entity crossed into or out of water
+       if ((ent->v->watertype == CONTENTS_WATER || ent->v->watertype == CONTENTS_SLIME) != (cont == CONTENTS_WATER || cont == CONTENTS_SLIME))
+               SV_StartSound (ent, 0, "misc/h2ohit1.wav", 255, 1);
+
        if (cont <= CONTENTS_WATER)
        {
-               if (ent->v->watertype == CONTENTS_EMPTY && cont != CONTENTS_LAVA)
-                       // just crossed into water
-                       SV_StartSound (ent, 0, "misc/h2ohit1.wav", 255, 1);
-
                ent->v->watertype = cont;
                ent->v->waterlevel = 1;
        }
        else
        {
-               if (ent->v->watertype != CONTENTS_EMPTY && ent->v->watertype != CONTENTS_LAVA)
-                       // just crossed into water
-                       SV_StartSound (ent, 0, "misc/h2ohit1.wav", 255, 1);
-
                ent->v->watertype = CONTENTS_EMPTY;
-               ent->v->waterlevel = cont;
+               ent->v->waterlevel = 0;
        }
 }
 
@@ -1182,9 +1234,15 @@ void SV_Physics_Toss (edict_t *ent)
        if (!SV_RunThink (ent))
                return;
 
+       // don't stick to ground if onground and moving upward
+       if (ent->v->velocity[2] >= (1.0 / 32.0) && ((int)ent->v->flags & FL_ONGROUND))
+               ent->v->flags = (int)ent->v->flags & ~FL_ONGROUND;
+
 // if onground, return without moving
        if ((int)ent->v->flags & FL_ONGROUND)
        {
+               if (!sv_gameplayfix_noairborncorpse.integer)
+                       return;
                if (ent->v->groundentity == 0)
                        return;
                // if ent was supported by a brush model on previous frame,
@@ -1216,7 +1274,7 @@ void SV_Physics_Toss (edict_t *ent)
 
 // move origin
        VectorScale (ent->v->velocity, sv.frametime, move);
-       trace = SV_PushEntity (ent, move, vec3_origin);
+       trace = SV_PushEntity (ent, move);
        if (ent->e->free)
                return;
 
@@ -1229,17 +1287,34 @@ void SV_Physics_Toss (edict_t *ent)
                }
                else if (ent->v->movetype == MOVETYPE_BOUNCE)
                {
+                       float d;
                        ClipVelocity (ent->v->velocity, trace.plane.normal, ent->v->velocity, 1.5);
                        // LordHavoc: fixed grenades not bouncing when fired down a slope
-                       if (trace.plane.normal[2] > 0.7 && DotProduct(trace.plane.normal, ent->v->velocity) < 60)
+                       if (sv_gameplayfix_grenadebouncedownslopes.integer)
                        {
-                               ent->v->flags = (int)ent->v->flags | FL_ONGROUND;
-                               ent->v->groundentity = EDICT_TO_PROG(trace.ent);
-                               VectorClear (ent->v->velocity);
-                               VectorClear (ent->v->avelocity);
+                               d = DotProduct(trace.plane.normal, ent->v->velocity);
+                               if (trace.plane.normal[2] > 0.7 && fabs(d) < 60)
+                               {
+                                       ent->v->flags = (int)ent->v->flags | FL_ONGROUND;
+                                       ent->v->groundentity = EDICT_TO_PROG(trace.ent);
+                                       VectorClear (ent->v->velocity);
+                                       VectorClear (ent->v->avelocity);
+                               }
+                               else
+                                       ent->v->flags = (int)ent->v->flags & ~FL_ONGROUND;
                        }
                        else
-                               ent->v->flags = (int)ent->v->flags & ~FL_ONGROUND;
+                       {
+                               if (trace.plane.normal[2] > 0.7 && ent->v->velocity[2] < 60)
+                               {
+                                       ent->v->flags = (int)ent->v->flags | FL_ONGROUND;
+                                       ent->v->groundentity = EDICT_TO_PROG(trace.ent);
+                                       VectorClear (ent->v->velocity);
+                                       VectorClear (ent->v->avelocity);
+                               }
+                               else
+                                       ent->v->flags = (int)ent->v->flags & ~FL_ONGROUND;
+                       }
                }
                else
                {
@@ -1281,6 +1356,10 @@ will fall if the floor is pulled out from under them.
 */
 void SV_Physics_Step (edict_t *ent)
 {
+       // don't stick to ground if onground and moving upward
+       if (ent->v->velocity[2] >= (1.0 / 32.0) && ((int)ent->v->flags & FL_ONGROUND))
+               ent->v->flags = (int)ent->v->flags & ~FL_ONGROUND;
+
        // freefall if not onground/fly/swim
        if (!((int)ent->v->flags & (FL_ONGROUND | FL_FLY | FL_SWIM)))
        {
@@ -1289,7 +1368,7 @@ void SV_Physics_Step (edict_t *ent)
                SV_AddGravity(ent);
                SV_CheckVelocity(ent);
                SV_FlyMove(ent, sv.frametime, NULL);
-               SV_LinkEdict(ent, false);
+               SV_LinkEdict(ent, true);
 
                // just hit ground
                if (hitsound && (int)ent->v->flags & FL_ONGROUND)
@@ -1333,10 +1412,8 @@ void SV_Physics (void)
                if (pr_global_struct->force_retouch)
                        SV_LinkEdict (ent, true);       // force retouch even for stationary
 
-               if (i > 0 && i <= svs.maxclients)
+               if (i >= 1 && i <= svs.maxclients && svs.clients[i-1].spawned)
                {
-                       if (!svs.clients[i-1].active)
-                               continue;
                        // connected slot
                        // call standard client pre-think
                        SV_CheckVelocity (ent);
@@ -1345,11 +1422,14 @@ void SV_Physics (void)
                        PR_ExecuteProgram (pr_global_struct->PlayerPreThink, "QC function PlayerPreThink is missing");
                        SV_CheckVelocity (ent);
                }
+               else if (sv_freezenonclients.integer)
+                       continue;
 
                // LordHavoc: merged client and normal entity physics
                switch ((int) ent->v->movetype)
                {
                case MOVETYPE_PUSH:
+               case MOVETYPE_FAKEPUSH:
                        SV_Physics_Pusher (ent);
                        break;
                case MOVETYPE_NONE:
@@ -1361,17 +1441,15 @@ void SV_Physics (void)
                        SV_Physics_Follow (ent);
                        break;
                case MOVETYPE_NOCLIP:
-                       if (i > 0 && i <= svs.maxclients)
+                       if (SV_RunThink(ent))
                        {
-                               if (SV_RunThink (ent))
-                               {
-                                       SV_CheckWater (ent);
-                                       VectorMA (ent->v->origin, sv.frametime, ent->v->velocity, ent->v->origin);
-                                       VectorMA (ent->v->angles, sv.frametime, ent->v->avelocity, ent->v->angles);
-                               }
+                               SV_CheckWater(ent);
+                               VectorMA(ent->v->origin, sv.frametime, ent->v->velocity, ent->v->origin);
+                               VectorMA(ent->v->angles, sv.frametime, ent->v->avelocity, ent->v->angles);
                        }
-                       else
-                               SV_Physics_Noclip (ent);
+                       // relink normal entities here, players always get relinked so don't relink twice
+                       if (!(i > 0 && i <= svs.maxclients))
+                               SV_LinkEdict(ent, false);
                        break;
                case MOVETYPE_STEP:
                        SV_Physics_Step (ent);
@@ -1383,7 +1461,9 @@ void SV_Physics (void)
                                        SV_AddGravity (ent);
                                SV_CheckStuck (ent);
                                SV_WalkMove (ent);
-                               SV_LinkEdict (ent, true);
+                               // relink normal entities here, players always get relinked so don't relink twice
+                               if (!(i > 0 && i <= svs.maxclients))
+                                       SV_LinkEdict (ent, true);
                        }
                        break;
                case MOVETYPE_TOSS:
@@ -1409,7 +1489,7 @@ void SV_Physics (void)
                        break;
                }
 
-               if (i > 0 && i <= svs.maxclients && !ent->e->free)
+               if (i >= 1 && i <= svs.maxclients && svs.clients[i-1].spawned)
                {
                        SV_CheckVelocity (ent);
 
@@ -1433,10 +1513,11 @@ void SV_Physics (void)
                pr_global_struct->self = EDICT_TO_PROG(sv.edicts);
                pr_global_struct->other = EDICT_TO_PROG(sv.edicts);
                pr_global_struct->time = sv.time;
-               PR_ExecuteProgram ((func_t)(EndFrameQC - pr_functions), "");
+               PR_ExecuteProgram ((func_t)(EndFrameQC - pr_functions), "QC function EndFrame is missing");
        }
 
-       sv.time += sv.frametime;
+       if (!sv_freezenonclients.integer)
+               sv.time += sv.frametime;
 }
 
 
@@ -1477,9 +1558,8 @@ trace_t SV_Trace_Toss (edict_t *tossent, edict_t *ignore)
                trace = SV_Move (tent->v->origin, tent->v->mins, tent->v->maxs, end, MOVE_NORMAL, tent);
                VectorCopy (trace.endpos, tent->v->origin);
 
-               if (trace.fraction < 1 && trace.ent)
-                       if (trace.ent != ignore)
-                               break;
+               if (trace.fraction < 1 && trace.ent && trace.ent != ignore)
+                       break;
        }
        tossent->v->solid = savesolid;
        trace.fraction = 0; // not relevant