]> git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - sv_phys.c
yet another check in sv_gameplayfix_slidemoveprojectiles
[xonotic/darkplaces.git] / sv_phys.c
index b7adc93ba1c0be1be68fe8d7eb28258f45dfbe91..6a6dda8c68383f6e84c4159f86ab708f39ec65de 100644 (file)
--- a/sv_phys.c
+++ b/sv_phys.c
@@ -107,7 +107,7 @@ trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const
        // matrices to transform into/out of other entity's space
        matrix4x4_t matrix, imatrix;
        // model of other entity
-       model_t *model;
+       dp_model_t *model;
        // list of entities to test for collisions
        int numtouchedicts;
        prvm_edict_t *touchedicts[MAX_EDICTS];
@@ -225,9 +225,9 @@ trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const
                        Matrix4x4_CreateTranslate(&matrix, touch->fields.server->origin[0], touch->fields.server->origin[1], touch->fields.server->origin[2]);
                Matrix4x4_Invert_Simple(&imatrix, &matrix);
                if ((int)touch->fields.server->flags & FL_MONSTER)
-                       Collision_ClipToGenericEntity(&trace, model, touch->fields.server->frame, touch->fields.server->mins, touch->fields.server->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipend, hitsupercontentsmask);
+                       Collision_ClipToGenericEntity(&trace, model, (int) touch->fields.server->frame, touch->fields.server->mins, touch->fields.server->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipend, hitsupercontentsmask);
                else
-                       Collision_ClipToGenericEntity(&trace, model, touch->fields.server->frame, touch->fields.server->mins, touch->fields.server->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask);
+                       Collision_ClipToGenericEntity(&trace, model, (int) touch->fields.server->frame, touch->fields.server->mins, touch->fields.server->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins, clipmaxs, clipend, hitsupercontentsmask);
 
                Collision_CombineTraces(&cliptrace, &trace, (void *)touch, touch->fields.server->solid == SOLID_BSP);
        }
@@ -255,6 +255,63 @@ trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const
 }
 #endif
 
+int SV_PointSuperContents(const vec3_t point)
+{
+       int supercontents = 0;
+       int i;
+       prvm_edict_t *touch;
+       vec3_t transformed;
+       // matrices to transform into/out of other entity's space
+       matrix4x4_t matrix, imatrix;
+       // model of other entity
+       dp_model_t *model;
+       unsigned int modelindex;
+       int frame;
+       // list of entities to test for collisions
+       int numtouchedicts;
+       prvm_edict_t *touchedicts[MAX_EDICTS];
+
+       // get world supercontents at this point
+       if (sv.worldmodel && sv.worldmodel->PointSuperContents)
+               supercontents = sv.worldmodel->PointSuperContents(sv.worldmodel, 0, point);
+
+       // if sv_gameplayfix_swiminbmodels is off we're done
+       if (!sv_gameplayfix_swiminbmodels.integer)
+               return supercontents;
+
+       // get list of entities at this point
+       numtouchedicts = World_EntitiesInBox(&sv.world, point, point, MAX_EDICTS, touchedicts);
+       if (numtouchedicts > MAX_EDICTS)
+       {
+               // this never happens
+               Con_Printf("SV_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
+               numtouchedicts = MAX_EDICTS;
+       }
+       for (i = 0;i < numtouchedicts;i++)
+       {
+               touch = touchedicts[i];
+
+               // we only care about SOLID_BSP for pointcontents
+               if (touch->fields.server->solid != SOLID_BSP)
+                       continue;
+
+               // might interact, so do an exact clip
+               modelindex = (unsigned int)touch->fields.server->modelindex;
+               if (modelindex >= MAX_MODELS)
+                       continue;
+               model = sv.models[(int)touch->fields.server->modelindex];
+               if (!model || !model->PointSuperContents)
+                       continue;
+               Matrix4x4_CreateFromQuakeEntity(&matrix, touch->fields.server->origin[0], touch->fields.server->origin[1], touch->fields.server->origin[2], touch->fields.server->angles[0], touch->fields.server->angles[1], touch->fields.server->angles[2], 1);
+               Matrix4x4_Invert_Simple(&imatrix, &matrix);
+               Matrix4x4_Transform(&imatrix, point, transformed);
+               frame = (int)touch->fields.server->frame;
+               supercontents |= model->PointSuperContents(model, bound(0, frame, (model->numframes - 1)), transformed);
+       }
+
+       return supercontents;
+}
+
 /*
 ===============================================================================
 
@@ -321,7 +378,7 @@ SV_LinkEdict
 */
 void SV_LinkEdict (prvm_edict_t *ent, qboolean touch_triggers)
 {
-       model_t *model;
+       dp_model_t *model;
        vec3_t mins, maxs;
 
        if (ent == prog->edicts)
@@ -699,17 +756,32 @@ Returns the clipflags if the velocity was modified (hit something solid)
 If stepnormal is not NULL, the plane normal of any vertical wall hit will be stored
 ============
 */
+static float SV_Gravity (prvm_edict_t *ent);
 // LordHavoc: increased from 5 to 32
 #define MAX_CLIP_PLANES 32
-int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal, int hitsupercontentsmask)
+static int SV_FlyMove (prvm_edict_t *ent, float time, qboolean applygravity, float *stepnormal, int hitsupercontentsmask)
 {
        int blocked, bumpcount;
        int i, j, impact, numplanes;
-       float d, time_left;
+       float d, time_left, gravity;
        vec3_t dir, end, planes[MAX_CLIP_PLANES], primal_velocity, original_velocity, new_velocity;
        trace_t trace;
        if (time <= 0)
                return 0;
+       gravity = 0;
+       if (applygravity)
+       {
+               if (sv_gameplayfix_gravityunaffectedbyticrate.integer)
+               {
+                       gravity = SV_Gravity(ent) * 0.5f;
+                       ent->fields.server->velocity[2] -= gravity;
+               }
+               else
+               {
+                       applygravity = false;
+                       ent->fields.server->velocity[2] -= SV_Gravity(ent);
+               }
+       }
        blocked = 0;
        VectorCopy(ent->fields.server->velocity, original_velocity);
        VectorCopy(ent->fields.server->velocity, primal_velocity);
@@ -923,16 +995,18 @@ int SV_FlyMove (prvm_edict_t *ent, float time, float *stepnormal, int hitsuperco
        // LordHavoc: this came from QW and allows you to get out of water more easily
        if (sv_gameplayfix_easierwaterjump.integer && ((int)ent->fields.server->flags & FL_WATERJUMP))
                VectorCopy(primal_velocity, ent->fields.server->velocity);
+       if (applygravity && !((int)ent->fields.server->flags & FL_ONGROUND))
+               ent->fields.server->velocity[2] -= gravity;
        return blocked;
 }
 
 /*
 ============
-SV_AddGravity
+SV_Gravity
 
 ============
 */
-void SV_AddGravity (prvm_edict_t *ent)
+static float SV_Gravity (prvm_edict_t *ent)
 {
        float ent_gravity;
        prvm_eval_t *val;
@@ -942,7 +1016,7 @@ void SV_AddGravity (prvm_edict_t *ent)
                ent_gravity = val->_float;
        else
                ent_gravity = 1.0;
-       ent->fields.server->velocity[2] -= ent_gravity * sv_gravity.value * sv.frametime;
+       return ent_gravity * sv_gravity.value * sv.frametime;
 }
 
 
@@ -998,12 +1072,15 @@ SV_PushMove
 void SV_PushMove (prvm_edict_t *pusher, float movetime)
 {
        int i, e, index;
+       int pusherowner, pusherprog;
+       int checkcontents;
+       qboolean rotated;
        float savesolid, movetime2, pushltime;
        vec3_t mins, maxs, move, move1, moveangle, pushorig, pushang, a, forward, left, up, org;
        int num_moved;
        int numcheckentities;
        static prvm_edict_t *checkentities[MAX_EDICTS];
-       model_t *pushermodel;
+       dp_model_t *pushermodel;
        trace_t trace;
        matrix4x4_t pusherfinalmatrix, pusherfinalimatrix;
        unsigned short moved_edicts[MAX_EDICTS];
@@ -1044,6 +1121,10 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                return;
        }
        pushermodel = sv.models[index];
+       pusherowner = pusher->fields.server->owner;
+       pusherprog = PRVM_EDICT_TO_PROG(pusher);
+
+       rotated = VectorLength2(pusher->fields.server->angles) + VectorLength2(pusher->fields.server->avelocity) > 0;
 
        movetime2 = movetime;
        VectorScale(pusher->fields.server->velocity, movetime2, move1);
@@ -1126,7 +1207,6 @@ 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
@@ -1134,18 +1214,34 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                 || check->fields.server->movetype == MOVETYPE_FAKEPUSH)
                        continue;
 
+               if (check->fields.server->owner == pusherprog)
+                       continue;
+
+               if (pusherowner == PRVM_EDICT_TO_PROG(check))
+                       continue;
+
+               //Con_Printf("%i %s ", PRVM_NUM_FOR_EDICT(check), PRVM_GetString(check->fields.server->classname));
+
+               // tell any MOVETYPE_STEP entity that it may need to check for water transitions
+               check->priv.server->waterposition_forceupdate = true;
+
+               checkcontents = SV_GenericHitSuperContentsMask(check);
+
                // if the entity is standing on the pusher, it will definitely be moved
                // if the entity is not standing on the pusher, but is in the pusher's
                // final position, move it
                if (!((int)check->fields.server->flags & FL_ONGROUND) || PRVM_PROG_TO_EDICT(check->fields.server->groundentity) != pusher)
                {
-                       Collision_ClipToGenericEntity(&trace, pushermodel, pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, checkcontents);
+                       Collision_ClipToGenericEntity(&trace, pushermodel, (int) pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, checkcontents);
+                       //trace = SV_Move(check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, MOVE_NOMONSTERS, check, checkcontents);
                        if (!trace.startsolid)
+                       {
+                               //Con_Printf("- not in solid\n");
                                continue;
+                       }
                }
 
-
-               if (forward[0] != 1 || left[1] != 1) // quick way to check if any rotation is used
+               if (rotated)
                {
                        vec3_t org2;
                        VectorSubtract (check->fields.server->origin, pusher->fields.server->origin, org);
@@ -1158,6 +1254,8 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                else
                        VectorCopy (move1, move);
 
+               //Con_Printf("- pushing %f %f %f\n", move[0], move[1], move[2]);
+
                VectorCopy (check->fields.server->origin, check->priv.server->moved_from);
                VectorCopy (check->fields.server->angles, check->priv.server->moved_fromangles);
                moved_edicts[num_moved++] = PRVM_NUM_FOR_EDICT(check);
@@ -1177,7 +1275,7 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                        check->fields.server->flags = (int)check->fields.server->flags & ~FL_ONGROUND;
 
                // if it is still inside the pusher, block
-               Collision_ClipToGenericEntity(&trace, pushermodel, pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, checkcontents);
+               Collision_ClipToGenericEntity(&trace, pushermodel, (int) pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, checkcontents);
                if (trace.startsolid)
                {
                        // try moving the contacted entity a tiny bit further to account for precision errors
@@ -1188,7 +1286,7 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                        VectorCopy (check->priv.server->moved_fromangles, check->fields.server->angles);
                        SV_PushEntity (check, move2, true);
                        pusher->fields.server->solid = savesolid;
-                       Collision_ClipToGenericEntity(&trace, pushermodel, pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, checkcontents);
+                       Collision_ClipToGenericEntity(&trace, pushermodel, (int) pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, checkcontents);
                        if (trace.startsolid)
                        {
                                // try moving the contacted entity a tiny bit less to account for precision errors
@@ -1198,7 +1296,7 @@ void SV_PushMove (prvm_edict_t *pusher, float movetime)
                                VectorCopy (check->priv.server->moved_fromangles, check->fields.server->angles);
                                SV_PushEntity (check, move2, true);
                                pusher->fields.server->solid = savesolid;
-                               Collision_ClipToGenericEntity(&trace, pushermodel, pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, checkcontents);
+                               Collision_ClipToGenericEntity(&trace, pushermodel, (int) pusher->fields.server->frame, pusher->fields.server->mins, pusher->fields.server->maxs, SUPERCONTENTS_BODY, &pusherfinalmatrix, &pusherfinalimatrix, check->fields.server->origin, check->fields.server->mins, check->fields.server->maxs, check->fields.server->origin, checkcontents);
                                if (trace.startsolid)
                                {
                                        // still inside pusher, so it's really blocked
@@ -1302,21 +1400,37 @@ static float unstickoffsets[] =
         1,  1,  0,
         0,  0,  -1,
         0,  0,  1,
+        0,  0,  -2,
         0,  0,  2,
+        0,  0,  -3,
         0,  0,  3,
+        0,  0,  -4,
         0,  0,  4,
+        0,  0,  -5,
         0,  0,  5,
+        0,  0,  -6,
         0,  0,  6,
+        0,  0,  -7,
         0,  0,  7,
+        0,  0,  -8,
         0,  0,  8,
+        0,  0,  -9,
         0,  0,  9,
+        0,  0,  -10,
         0,  0,  10,
+        0,  0,  -11,
         0,  0,  11,
+        0,  0,  -12,
         0,  0,  12,
+        0,  0,  -13,
         0,  0,  13,
+        0,  0,  -14,
         0,  0,  14,
+        0,  0,  -15,
         0,  0,  15,
+        0,  0,  -16,
         0,  0,  16,
+        0,  0,  -17,
         0,  0,  17,
 };
 
@@ -1360,13 +1474,13 @@ void SV_CheckStuck (prvm_edict_t *ent)
        Con_DPrintf("Stuck player entity %i (classname \"%s\").\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(ent->fields.server->classname));
 }
 
-static void SV_UnstickEntity (prvm_edict_t *ent)
+qboolean SV_UnstickEntity (prvm_edict_t *ent)
 {
        int i;
 
        // if not stuck in a bmodel, just return
        if (!SV_TestEntityPosition(ent, vec3_origin))
-               return;
+               return true;
 
        for (i = 0;i < (int)(sizeof(unstickoffsets) / sizeof(unstickoffsets[0]));i += 3)
        {
@@ -1374,12 +1488,13 @@ static void SV_UnstickEntity (prvm_edict_t *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), unstickoffsets[i+0], unstickoffsets[i+1], unstickoffsets[i+2]);
                        SV_LinkEdict (ent, true);
-                       return;
+                       return true;
                }
        }
 
        if (developer.integer >= 100)
                Con_Printf("Stuck entity %i (classname \"%s\").\n", (int)PRVM_EDICT_TO_PROG(ent), PRVM_GetString(ent->fields.server->classname));
+       return false;
 }
 
 
@@ -1530,12 +1645,17 @@ void SV_WalkMove (prvm_edict_t *ent)
        int clip, oldonground, originalmove_clip, originalmove_flags, originalmove_groundentity, hitsupercontentsmask;
        vec3_t upmove, downmove, start_origin, start_velocity, stepnormal, originalmove_origin, originalmove_velocity;
        trace_t downtrace;
+       qboolean applygravity;
 
        // if frametime is 0 (due to client sending the same timestamp twice),
        // don't move
        if (sv.frametime <= 0)
                return;
 
+       SV_CheckStuck (ent);
+
+       applygravity = !SV_CheckWater (ent) && ent->fields.server->movetype == MOVETYPE_WALK && ! ((int)ent->fields.server->flags & FL_WATERJUMP);
+
        hitsupercontentsmask = SV_GenericHitSuperContentsMask(ent);
 
        SV_CheckVelocity(ent);
@@ -1546,13 +1666,14 @@ void SV_WalkMove (prvm_edict_t *ent)
        VectorCopy (ent->fields.server->origin, start_origin);
        VectorCopy (ent->fields.server->velocity, start_velocity);
 
-       clip = SV_FlyMove (ent, sv.frametime, NULL, hitsupercontentsmask);
+       clip = SV_FlyMove (ent, sv.frametime, applygravity, NULL, hitsupercontentsmask);
 
        // if the move did not hit the ground at any point, we're not on ground
        if (!(clip & 1))
                ent->fields.server->flags = (int)ent->fields.server->flags & ~FL_ONGROUND;
 
        SV_CheckVelocity(ent);
+       SV_LinkEdict (ent, true);
 
        VectorCopy(ent->fields.server->origin, originalmove_origin);
        VectorCopy(ent->fields.server->velocity, originalmove_velocity);
@@ -1598,10 +1719,11 @@ void SV_WalkMove (prvm_edict_t *ent)
 
                // move forward
                ent->fields.server->velocity[2] = 0;
-               clip = SV_FlyMove (ent, sv.frametime, stepnormal, hitsupercontentsmask);
+               clip = SV_FlyMove (ent, sv.frametime, applygravity, stepnormal, hitsupercontentsmask);
                ent->fields.server->velocity[2] += start_velocity[2];
 
                SV_CheckVelocity(ent);
+               SV_LinkEdict (ent, true);
 
                // check for stuckness, possibly due to the limited precision of floats
                // in the clipping hulls
@@ -1665,6 +1787,7 @@ void SV_WalkMove (prvm_edict_t *ent)
        }
 
        SV_CheckVelocity(ent);
+       SV_LinkEdict (ent, true);
 }
 
 //============================================================================
@@ -1773,6 +1896,8 @@ void SV_Physics_Toss (prvm_edict_t *ent)
 {
        trace_t trace;
        vec3_t move;
+       vec_t movetime;
+       int bump;
 
 // if onground, return without moving
        if ((int)ent->fields.server->flags & FL_ONGROUND)
@@ -1802,27 +1927,30 @@ void SV_Physics_Toss (prvm_edict_t *ent)
 
 // add gravity
        if (ent->fields.server->movetype == MOVETYPE_TOSS || ent->fields.server->movetype == MOVETYPE_BOUNCE)
-               SV_AddGravity (ent);
+               ent->fields.server->velocity[2] -= SV_Gravity(ent);
 
 // move angles
        VectorMA (ent->fields.server->angles, sv.frametime, ent->fields.server->avelocity, ent->fields.server->angles);
 
-// move origin
-       VectorScale (ent->fields.server->velocity, sv.frametime, move);
-       trace = SV_PushEntity (ent, move, true);
-       if (ent->priv.server->free)
-               return;
-       if (trace.bmodelstartsolid)
+       movetime = sv.frametime;
+       for (bump = 0;bump < MAX_CLIP_PLANES && movetime > 0;bump++)
        {
-               // try to unstick the entity
-               SV_UnstickEntity(ent);
-               trace = SV_PushEntity (ent, move, false);
+       // move origin
+               VectorScale (ent->fields.server->velocity, movetime, move);
+               trace = SV_PushEntity (ent, move, true);
                if (ent->priv.server->free)
                        return;
-       }
-
-       if (trace.fraction < 1)
-       {
+               if (trace.bmodelstartsolid)
+               {
+                       // try to unstick the entity
+                       SV_UnstickEntity(ent);
+                       trace = SV_PushEntity (ent, move, false);
+                       if (ent->priv.server->free)
+                               return;
+               }
+               if (trace.fraction == 1)
+                       break;
+               movetime *= 1 - min(1, trace.fraction);
                if (ent->fields.server->movetype == MOVETYPE_BOUNCEMISSILE)
                {
                        ClipVelocity (ent->fields.server->velocity, trace.plane.normal, ent->fields.server->velocity, 2.0);
@@ -1830,13 +1958,19 @@ void SV_Physics_Toss (prvm_edict_t *ent)
                }
                else if (ent->fields.server->movetype == MOVETYPE_BOUNCE)
                {
-                       float d;
+                       float d, ent_gravity;
+                       prvm_eval_t *val;
                        ClipVelocity (ent->fields.server->velocity, trace.plane.normal, ent->fields.server->velocity, 1.5);
                        // LordHavoc: fixed grenades not bouncing when fired down a slope
+                       val = PRVM_EDICTFIELDVALUE(ent, prog->fieldoffsets.gravity);
+                       if (val!=0 && val->_float)
+                               ent_gravity = val->_float;
+                       else
+                               ent_gravity = 1.0;
                        if (sv_gameplayfix_grenadebouncedownslopes.integer)
                        {
                                d = DotProduct(trace.plane.normal, ent->fields.server->velocity);
-                               if (trace.plane.normal[2] > 0.7 && fabs(d) < 60)
+                               if (trace.plane.normal[2] > 0.7 && fabs(d) < sv_gravity.value * (60.0 / 800.0) * ent_gravity)
                                {
                                        ent->fields.server->flags = (int)ent->fields.server->flags | FL_ONGROUND;
                                        ent->fields.server->groundentity = PRVM_EDICT_TO_PROG(trace.ent);
@@ -1848,7 +1982,7 @@ void SV_Physics_Toss (prvm_edict_t *ent)
                        }
                        else
                        {
-                               if (trace.plane.normal[2] > 0.7 && ent->fields.server->velocity[2] < 60)
+                               if (trace.plane.normal[2] > 0.7 && ent->fields.server->velocity[2] < sv_gravity.value * (60.0 / 800.0) * ent_gravity)
                                {
                                        ent->fields.server->flags = (int)ent->fields.server->flags | FL_ONGROUND;
                                        ent->fields.server->groundentity = PRVM_EDICT_TO_PROG(trace.ent);
@@ -1874,6 +2008,8 @@ void SV_Physics_Toss (prvm_edict_t *ent)
                        else
                                ent->fields.server->flags = (int)ent->fields.server->flags & ~FL_ONGROUND;
                }
+               if (!sv_gameplayfix_slidemoveprojectiles.integer || (ent->fields.server->movetype != MOVETYPE_BOUNCE && ent->fields.server->movetype == MOVETYPE_BOUNCEMISSILE) || ((int)ent->fields.server->flags & FL_ONGROUND))
+                       break;
        }
 
 // check for in water
@@ -1902,6 +2038,13 @@ will fall if the floor is pulled out from under them.
 void SV_Physics_Step (prvm_edict_t *ent)
 {
        int flags = (int)ent->fields.server->flags;
+
+       // DRESK
+       // Backup Velocity in the event that movetypesteplandevent is called,
+       // to provide a parameter with the entity's velocity at impact.
+       prvm_eval_t *movetypesteplandevent;
+       vec3_t backupVelocity;
+       VectorCopy(ent->fields.server->velocity, backupVelocity);
        // don't fall at all if fly/swim
        if (!(flags & (FL_FLY | FL_SWIM)))
        {
@@ -1912,10 +2055,10 @@ void SV_Physics_Step (prvm_edict_t *ent)
                        if ((ent->fields.server->velocity[2] >= (1.0 / 32.0) && sv_gameplayfix_upwardvelocityclearsongroundflag.integer) || ent->fields.server->groundentity)
                        {
                                ent->fields.server->flags -= FL_ONGROUND;
-                               SV_AddGravity(ent);
                                SV_CheckVelocity(ent);
-                               SV_FlyMove(ent, sv.frametime, NULL, SV_GenericHitSuperContentsMask(ent));
+                               SV_FlyMove(ent, sv.frametime, true, NULL, SV_GenericHitSuperContentsMask(ent));
                                SV_LinkEdict(ent, true);
+                               ent->priv.server->waterposition_forceupdate = true;
                        }
                }
                else
@@ -1923,31 +2066,63 @@ void SV_Physics_Step (prvm_edict_t *ent)
                        // freefall if not onground
                        int hitsound = ent->fields.server->velocity[2] < sv_gravity.value * -0.1;
 
-                       SV_AddGravity(ent);
                        SV_CheckVelocity(ent);
-                       SV_FlyMove(ent, sv.frametime, NULL, SV_GenericHitSuperContentsMask(ent));
+                       SV_FlyMove(ent, sv.frametime, true, NULL, SV_GenericHitSuperContentsMask(ent));
                        SV_LinkEdict(ent, true);
 
                        // just hit ground
-                       if (hitsound && (int)ent->fields.server->flags & FL_ONGROUND && sv_sound_land.string)
-                               SV_StartSound(ent, 0, sv_sound_land.string, 255, 1);
+                       if (hitsound && (int)ent->fields.server->flags & FL_ONGROUND)
+                       {
+                               // DRESK - Check for Entity Land Event Function
+                               movetypesteplandevent = PRVM_EDICTFIELDVALUE(ent, prog->fieldoffsets.movetypesteplandevent);
+
+                               if(movetypesteplandevent->function)
+                               { // Valid Function; Execute
+                                       // Prepare Parameters
+                                               // Assign Velocity at Impact
+                                               PRVM_G_VECTOR(OFS_PARM0)[0] = backupVelocity[0];
+                                               PRVM_G_VECTOR(OFS_PARM0)[1] = backupVelocity[1];
+                                               PRVM_G_VECTOR(OFS_PARM0)[2] = backupVelocity[2];
+                                               // Assign Self
+                                               prog->globals.server->self = PRVM_EDICT_TO_PROG(ent);
+                                       // Execute VM Function
+                                       PRVM_ExecuteProgram(movetypesteplandevent->function, "movetypesteplandevent: NULL function");
+                               }
+                               else
+                               // Check for Engine Landing Sound
+                               if(sv_sound_land.string)
+                                       SV_StartSound(ent, 0, sv_sound_land.string, 255, 1);
+                       }
+                       ent->priv.server->waterposition_forceupdate = true;
                }
        }
 
 // regular thinking
-       SV_RunThink(ent);
+       if (!SV_RunThink(ent))
+               return;
 
-       SV_CheckWaterTransition(ent);
+       if (ent->priv.server->waterposition_forceupdate || !VectorCompare(ent->fields.server->origin, ent->priv.server->waterposition_origin))
+       {
+               ent->priv.server->waterposition_forceupdate = false;
+               VectorCopy(ent->fields.server->origin, ent->priv.server->waterposition_origin);
+               SV_CheckWaterTransition(ent);
+       }
 }
 
 //============================================================================
 
 static void SV_Physics_Entity (prvm_edict_t *ent)
 {
-       // don't run a move on newly spawned projectiles as it messes up movement
-       // interpolation and rocket trails
+       // don't run think/move on newly spawned projectiles as it messes up
+       // movement interpolation and rocket trails, and is inconsistent with
+       // respect to entities spawned in the same frame
+       // (if an ent spawns a higher numbered ent, it moves in the same frame,
+       //  but if it spawns a lower numbered ent, it doesn't - this never moves
+       //  ents in the first frame regardless)
        qboolean runmove = ent->priv.server->move;
        ent->priv.server->move = true;
+       if (!runmove && sv_gameplayfix_delayprojectiles.integer)
+               return;
        switch ((int) ent->fields.server->movetype)
        {
        case MOVETYPE_PUSH:
@@ -1976,13 +2151,7 @@ static void SV_Physics_Entity (prvm_edict_t *ent)
                break;
        case MOVETYPE_WALK:
                if (SV_RunThink (ent))
-               {
-                       if (!SV_CheckWater (ent) && ! ((int)ent->fields.server->flags & FL_WATERJUMP) )
-                               SV_AddGravity (ent);
-                       SV_CheckStuck (ent);
                        SV_WalkMove (ent);
-                       SV_LinkEdict (ent, true);
-               }
                break;
        case MOVETYPE_TOSS:
        case MOVETYPE_BOUNCE:
@@ -1990,7 +2159,7 @@ static void SV_Physics_Entity (prvm_edict_t *ent)
        case MOVETYPE_FLYMISSILE:
        case MOVETYPE_FLY:
                // regular thinking
-               if (SV_RunThink (ent) && (runmove || !sv_gameplayfix_delayprojectiles.integer))
+               if (SV_RunThink (ent))
                        SV_Physics_Toss (ent);
                break;
        default:
@@ -2025,17 +2194,8 @@ void SV_Physics_ClientMove(void)
                VectorClear(ent->fields.server->velocity);
 
        // perform MOVETYPE_WALK behavior
-       if (!SV_CheckWater (ent) && ! ((int)ent->fields.server->flags & FL_WATERJUMP) )
-               SV_AddGravity (ent);
-       SV_CheckStuck (ent);
        SV_WalkMove (ent);
 
-       SV_CheckVelocity (ent);
-
-       SV_LinkEdict (ent, true);
-
-       SV_CheckVelocity (ent);
-
        // call standard player post-think, with frametime = 0
        prog->globals.server->time = sv.time;
        prog->globals.server->frametime = 0;
@@ -2065,8 +2225,11 @@ void SV_Physics_ClientEntity(prvm_edict_t *ent)
        }
 
        // don't run physics here if running asynchronously
-       if (host_client->clmovement_skipphysicsframes <= 0)
+       if (host_client->clmovement_inputtimeout <= 0)
+       {
                SV_ClientThink();
+               //host_client->cmd.time = max(host_client->cmd.time, sv.time);
+       }
 
        // make sure the velocity is sane (not a NaN)
        SV_CheckVelocity(ent);
@@ -2109,14 +2272,8 @@ void SV_Physics_ClientEntity(prvm_edict_t *ent)
        case MOVETYPE_WALK:
                SV_RunThink (ent);
                // don't run physics here if running asynchronously
-               if (host_client->clmovement_skipphysicsframes <= 0)
-               {
-                       if (!SV_CheckWater (ent) && ! ((int)ent->fields.server->flags & FL_WATERJUMP) )
-                               SV_AddGravity (ent);
-                       SV_CheckStuck (ent);
+               if (host_client->clmovement_inputtimeout <= 0)
                        SV_WalkMove (ent);
-                       host_client->cmd.time = max(host_client->cmd.time, sv.time); // ignore client movement data for anything before NOW
-               }
                break;
        case MOVETYPE_TOSS:
        case MOVETYPE_BOUNCE:
@@ -2128,7 +2285,6 @@ void SV_Physics_ClientEntity(prvm_edict_t *ent)
                break;
        case MOVETYPE_FLY:
                SV_RunThink (ent);
-               SV_CheckWater (ent);
                SV_WalkMove (ent);
                break;
        default:
@@ -2138,8 +2294,10 @@ void SV_Physics_ClientEntity(prvm_edict_t *ent)
 
        // decrement the countdown variable used to decide when to go back to
        // synchronous physics
-       if (host_client->clmovement_skipphysicsframes > 0)
-               host_client->clmovement_skipphysicsframes--;
+       if (host_client->clmovement_inputtimeout > sv.frametime)
+               host_client->clmovement_inputtimeout -= sv.frametime;
+       else
+               host_client->clmovement_inputtimeout = 0;
 
        SV_CheckVelocity (ent);