]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - cl_collision.c
split CL_Move into CL_TracePoint, CL_TraceLine, CL_TraceBox and similar
[xonotic/darkplaces.git] / cl_collision.c
index 140e0e681e61554e6054e70e0d4c29a62492809e..7f6d9c64607fd9dfa24a9d7818f26398bd70444f 100644 (file)
@@ -36,8 +36,8 @@ float CL_SelectTraceLine(const vec3_t start, const vec3_t end, vec3_t impact, ve
 
        if (hitent)
                *hitent = 0;
-       if (cl.worldmodel && cl.worldmodel->TraceBox)
-               cl.worldmodel->TraceBox(cl.worldmodel, 0, &trace, start, vec3_origin, vec3_origin, end, SUPERCONTENTS_SOLID);
+       if (cl.worldmodel && cl.worldmodel->TraceLine)
+               cl.worldmodel->TraceLine(cl.worldmodel, 0, &trace, start, end, SUPERCONTENTS_SOLID);
 
        if (normal)
                VectorCopy(trace.plane.normal, normal);
@@ -59,7 +59,7 @@ float CL_SelectTraceLine(const vec3_t start, const vec3_t end, vec3_t impact, ve
                ent = &cl.entities[n].render;
                if (!BoxesOverlap(ent->mins, ent->maxs, tracemins, tracemaxs))
                        continue;
-               if (!ent->model || !ent->model->TraceBox)
+               if (!ent->model || !ent->model->TraceLine)
                        continue;
                if ((ent->flags & RENDER_EXTERIORMODEL) && !chase_active.integer)
                        continue;
@@ -78,7 +78,7 @@ float CL_SelectTraceLine(const vec3_t start, const vec3_t end, vec3_t impact, ve
                if (maxrealfrac < trace.realfraction)
                        continue;
 
-               ent->model->TraceBox(ent->model, ent->frameblend[0].subframe, &trace, starttransformed, vec3_origin, vec3_origin, endtransformed, SUPERCONTENTS_SOLID);
+               ent->model->TraceLine(ent->model, ent->frameblend[0].subframe, &trace, starttransformed, endtransformed, SUPERCONTENTS_SOLID);
 
                if (maxrealfrac > trace.realfraction)
                {
@@ -226,10 +226,462 @@ int CL_GenericHitSuperContentsMask(const prvm_edict_t *passedict)
 CL_Move
 ==================
 */
+trace_t CL_TracePoint(const vec3_t start, int type, prvm_edict_t *passedict, int hitsupercontentsmask, qboolean hitnetworkbrushmodels, qboolean hitnetworkplayers, int *hitnetworkentity, qboolean hitcsqcentities)
+{
+       int i, bodysupercontents;
+       int passedictprog;
+       prvm_edict_t *traceowner, *touch;
+       trace_t trace;
+       // bounding box of entire move area
+       vec3_t clipboxmins, clipboxmaxs;
+       // size when clipping against monsters
+       vec3_t clipmins2, clipmaxs2;
+       // start and end origin of move
+       vec3_t clipstart;
+       // trace results
+       trace_t cliptrace;
+       // matrices to transform into/out of other entity's space
+       matrix4x4_t matrix, imatrix;
+       // model of other entity
+       dp_model_t *model;
+       // list of entities to test for collisions
+       int numtouchedicts;
+       prvm_edict_t *touchedicts[MAX_EDICTS];
+
+       if (hitnetworkentity)
+               *hitnetworkentity = 0;
+
+       VectorCopy(start, clipstart);
+       VectorClear(clipmins2);
+       VectorClear(clipmaxs2);
+#if COLLISIONPARANOID >= 3
+       Con_Printf("move(%f %f %f)", clipstart[0], clipstart[1], clipstart[2]);
+#endif
+
+       // clip to world
+       Collision_ClipPointToWorld(&cliptrace, cl.worldmodel, clipstart, hitsupercontentsmask);
+       cliptrace.bmodelstartsolid = cliptrace.startsolid;
+       if (cliptrace.startsolid || cliptrace.fraction < 1)
+               cliptrace.ent = prog ? prog->edicts : NULL;
+       if (type == MOVE_WORLDONLY)
+               goto finished;
+
+       if (type == MOVE_MISSILE)
+       {
+               // LordHavoc: modified this, was = -15, now -= 15
+               for (i = 0;i < 3;i++)
+               {
+                       clipmins2[i] -= 15;
+                       clipmaxs2[i] += 15;
+               }
+       }
+
+       // create the bounding box of the entire move
+       for (i = 0;i < 3;i++)
+       {
+               clipboxmins[i] = clipstart[i] - 1;
+               clipboxmaxs[i] = clipstart[i] + 1;
+       }
+
+       // debug override to test against everything
+       if (sv_debugmove.integer)
+       {
+               clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = -999999999;
+               clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  999999999;
+       }
+
+       // if the passedict is world, make it NULL (to avoid two checks each time)
+       // this checks prog because this function is often called without a CSQC
+       // VM context
+       if (prog == NULL || passedict == prog->edicts)
+               passedict = NULL;
+       // precalculate prog value for passedict for comparisons
+       passedictprog = prog != NULL ? PRVM_EDICT_TO_PROG(passedict) : 0;
+       // precalculate passedict's owner edict pointer for comparisons
+       traceowner = passedict ? PRVM_PROG_TO_EDICT(passedict->fields.client->owner) : NULL;
+
+       // collide against network entities
+       if (hitnetworkbrushmodels)
+       {
+               for (i = 0;i < cl.num_brushmodel_entities;i++)
+               {
+                       entity_render_t *ent = &cl.entities[cl.brushmodel_entities[i]].render;
+                       if (!BoxesOverlap(clipboxmins, clipboxmaxs, ent->mins, ent->maxs))
+                               continue;
+                       Collision_ClipPointToGenericEntity(&trace, ent->model, ent->frameblend[0].subframe, vec3_origin, vec3_origin, 0, &ent->matrix, &ent->inversematrix, start, hitsupercontentsmask);
+                       if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
+                               *hitnetworkentity = cl.brushmodel_entities[i];
+                       Collision_CombineTraces(&cliptrace, &trace, NULL, true);
+               }
+       }
+
+       // collide against player entities
+       if (hitnetworkplayers)
+       {
+               vec3_t origin, entmins, entmaxs;
+               matrix4x4_t entmatrix, entinversematrix;
+
+               if(gamemode == GAME_NEXUIZ)
+               {
+                       // don't hit network players, if we are a nonsolid player
+                       if(cl.scores[cl.playerentity-1].frags == -666 || cl.scores[cl.playerentity-1].frags == -616)
+                               goto skipnetworkplayers;
+               }
+
+               for (i = 1;i <= cl.maxclients;i++)
+               {
+                       entity_render_t *ent = &cl.entities[i].render;
+
+                       // don't hit ourselves
+                       if (i == cl.playerentity)
+                               continue;
+
+                       // don't hit players that don't exist
+                       if (!cl.scores[i-1].name[0])
+                               continue;
+
+                       if(gamemode == GAME_NEXUIZ)
+                       {
+                               // don't hit spectators or nonsolid players
+                               if(cl.scores[i-1].frags == -666 || cl.scores[i-1].frags == -616)
+                                       continue;
+                       }
+
+                       Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
+                       VectorAdd(origin, cl.playerstandmins, entmins);
+                       VectorAdd(origin, cl.playerstandmaxs, entmaxs);
+                       if (!BoxesOverlap(clipboxmins, clipboxmaxs, entmins, entmaxs))
+                               continue;
+                       Matrix4x4_CreateTranslate(&entmatrix, origin[0], origin[1], origin[2]);
+                       Matrix4x4_CreateTranslate(&entinversematrix, -origin[0], -origin[1], -origin[2]);
+                       Collision_ClipPointToGenericEntity(&trace, NULL, 0, cl.playerstandmins, cl.playerstandmaxs, SUPERCONTENTS_BODY, &entmatrix, &entinversematrix, start, hitsupercontentsmask);
+                       if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
+                               *hitnetworkentity = i;
+                       Collision_CombineTraces(&cliptrace, &trace, NULL, false);
+               }
+
+skipnetworkplayers:
+               ;
+       }
+
+       // 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
+       // note: if prog is NULL then there won't be any linked entities
+       numtouchedicts = 0;
+       if (hitcsqcentities && prog != NULL)
+       {
+               numtouchedicts = World_EntitiesInBox(&cl.world, clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
+               if (numtouchedicts > MAX_EDICTS)
+               {
+                       // this never happens
+                       Con_Printf("CL_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
+                       numtouchedicts = MAX_EDICTS;
+               }
+       }
+       for (i = 0;i < numtouchedicts;i++)
+       {
+               touch = touchedicts[i];
+
+               if (touch->fields.client->solid < SOLID_BBOX)
+                       continue;
+               if (type == MOVE_NOMONSTERS && touch->fields.client->solid != SOLID_BSP)
+                       continue;
+
+               if (passedict)
+               {
+                       // don't clip against self
+                       if (passedict == touch)
+                               continue;
+                       // don't clip owned entities against owner
+                       if (traceowner == touch)
+                               continue;
+                       // don't clip owner against owned entities
+                       if (passedictprog == touch->fields.client->owner)
+                               continue;
+                       // don't clip points against points (they can't collide)
+                       if (VectorCompare(touch->fields.client->mins, touch->fields.client->maxs) && (type != MOVE_MISSILE || !((int)touch->fields.client->flags & FL_MONSTER)))
+                               continue;
+               }
+
+               bodysupercontents = touch->fields.client->solid == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
+
+               // might interact, so do an exact clip
+               model = NULL;
+               if ((int) touch->fields.client->solid == SOLID_BSP || type == MOVE_HITMODEL)
+               {
+                       unsigned int modelindex = (unsigned int)touch->fields.client->modelindex;
+                       // if the modelindex is 0, it shouldn't be SOLID_BSP!
+                       if (modelindex > 0 && modelindex < MAX_MODELS)
+                               model = cl.model_precache[(int)touch->fields.client->modelindex];
+               }
+               if (model)
+                       Matrix4x4_CreateFromQuakeEntity(&matrix, touch->fields.client->origin[0], touch->fields.client->origin[1], touch->fields.client->origin[2], touch->fields.client->angles[0], touch->fields.client->angles[1], touch->fields.client->angles[2], 1);
+               else
+                       Matrix4x4_CreateTranslate(&matrix, touch->fields.client->origin[0], touch->fields.client->origin[1], touch->fields.client->origin[2]);
+               Matrix4x4_Invert_Simple(&imatrix, &matrix);
+               if ((int)touch->fields.client->flags & FL_MONSTER)
+                       Collision_ClipToGenericEntity(&trace, model, (int) touch->fields.client->frame, touch->fields.client->mins, touch->fields.client->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipstart, hitsupercontentsmask);
+               else
+                       Collision_ClipPointToGenericEntity(&trace, model, (int) touch->fields.client->frame, touch->fields.client->mins, touch->fields.client->maxs, bodysupercontents, &matrix, &imatrix, clipstart, hitsupercontentsmask);
+
+               if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
+                       *hitnetworkentity = 0;
+               Collision_CombineTraces(&cliptrace, &trace, (void *)touch, touch->fields.client->solid == SOLID_BSP);
+       }
+
+finished:
+       return cliptrace;
+}
+
+/*
+==================
+CL_TraceLine
+==================
+*/
+#ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
+trace_t CL_TraceLine(const vec3_t start, const vec3_t pEnd, int type, prvm_edict_t *passedict, int hitsupercontentsmask, qboolean hitnetworkbrushmodels, qboolean hitnetworkplayers, int *hitnetworkentity, qboolean hitcsqcentities)
+#else
+trace_t CL_TraceLine(const vec3_t start, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask, qboolean hitnetworkbrushmodels, qboolean hitnetworkplayers, int *hitnetworkentity, qboolean hitcsqcentities)
+#endif
+{
+       int i, bodysupercontents;
+       int passedictprog;
+       prvm_edict_t *traceowner, *touch;
+       trace_t trace;
+       // bounding box of entire move area
+       vec3_t clipboxmins, clipboxmaxs;
+       // size when clipping against monsters
+       vec3_t clipmins2, clipmaxs2;
+       // start and end origin of move
+       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
+       dp_model_t *model;
+       // list of entities to test for collisions
+       int numtouchedicts;
+       prvm_edict_t *touchedicts[MAX_EDICTS];
 #ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
-trace_t CL_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t pEnd, int type, prvm_edict_t *passedict, int hitsupercontentsmask, qboolean hitnetworkbrushmodels, qboolean hitnetworkplayers, int *hitnetworkentity, qboolean hitcsqcentities)
+       vec3_t end;
+       vec_t len = 0;
+
+       if(!VectorCompare(start, pEnd))
+       {
+               // TRICK: make the trace 1 qu longer!
+               VectorSubtract(pEnd, start, end);
+               len = VectorNormalizeLength(end);
+               VectorAdd(pEnd, end, end);
+       }
+       else
+               VectorCopy(pEnd, end);
+#endif
+
+       if (VectorCompare(start, end))
+               return CL_TracePoint(start, type, passedict, hitsupercontentsmask, hitnetworkbrushmodels, hitnetworkplayers, hitnetworkentity, hitcsqcentities);
+
+       if (hitnetworkentity)
+               *hitnetworkentity = 0;
+
+       VectorCopy(start, clipstart);
+       VectorCopy(end, clipend);
+       VectorClear(clipmins2);
+       VectorClear(clipmaxs2);
+#if COLLISIONPARANOID >= 3
+       Con_Printf("move(%f %f %f,%f %f %f)", clipstart[0], clipstart[1], clipstart[2], clipend[0], clipend[1], clipend[2]);
+#endif
+
+       // clip to world
+       Collision_ClipLineToWorld(&cliptrace, cl.worldmodel, clipstart, clipend, hitsupercontentsmask);
+       cliptrace.bmodelstartsolid = cliptrace.startsolid;
+       if (cliptrace.startsolid || cliptrace.fraction < 1)
+               cliptrace.ent = prog ? prog->edicts : NULL;
+       if (type == MOVE_WORLDONLY)
+               goto finished;
+
+       if (type == MOVE_MISSILE)
+       {
+               // LordHavoc: modified this, was = -15, now -= 15
+               for (i = 0;i < 3;i++)
+               {
+                       clipmins2[i] -= 15;
+                       clipmaxs2[i] += 15;
+               }
+       }
+
+       // create the bounding box of the entire move
+       for (i = 0;i < 3;i++)
+       {
+               clipboxmins[i] = min(clipstart[i], cliptrace.endpos[i]) + clipmins2[i] - 1;
+               clipboxmaxs[i] = max(clipstart[i], cliptrace.endpos[i]) + clipmaxs2[i] + 1;
+       }
+
+       // debug override to test against everything
+       if (sv_debugmove.integer)
+       {
+               clipboxmins[0] = clipboxmins[1] = clipboxmins[2] = -999999999;
+               clipboxmaxs[0] = clipboxmaxs[1] = clipboxmaxs[2] =  999999999;
+       }
+
+       // if the passedict is world, make it NULL (to avoid two checks each time)
+       // this checks prog because this function is often called without a CSQC
+       // VM context
+       if (prog == NULL || passedict == prog->edicts)
+               passedict = NULL;
+       // precalculate prog value for passedict for comparisons
+       passedictprog = prog != NULL ? PRVM_EDICT_TO_PROG(passedict) : 0;
+       // precalculate passedict's owner edict pointer for comparisons
+       traceowner = passedict ? PRVM_PROG_TO_EDICT(passedict->fields.client->owner) : NULL;
+
+       // collide against network entities
+       if (hitnetworkbrushmodels)
+       {
+               for (i = 0;i < cl.num_brushmodel_entities;i++)
+               {
+                       entity_render_t *ent = &cl.entities[cl.brushmodel_entities[i]].render;
+                       if (!BoxesOverlap(clipboxmins, clipboxmaxs, ent->mins, ent->maxs))
+                               continue;
+                       Collision_ClipLineToGenericEntity(&trace, ent->model, ent->frameblend[0].subframe, vec3_origin, vec3_origin, 0, &ent->matrix, &ent->inversematrix, start, end, hitsupercontentsmask);
+                       if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
+                               *hitnetworkentity = cl.brushmodel_entities[i];
+                       Collision_CombineTraces(&cliptrace, &trace, NULL, true);
+               }
+       }
+
+       // collide against player entities
+       if (hitnetworkplayers)
+       {
+               vec3_t origin, entmins, entmaxs;
+               matrix4x4_t entmatrix, entinversematrix;
+
+               if(gamemode == GAME_NEXUIZ)
+               {
+                       // don't hit network players, if we are a nonsolid player
+                       if(cl.scores[cl.playerentity-1].frags == -666 || cl.scores[cl.playerentity-1].frags == -616)
+                               goto skipnetworkplayers;
+               }
+
+               for (i = 1;i <= cl.maxclients;i++)
+               {
+                       entity_render_t *ent = &cl.entities[i].render;
+
+                       // don't hit ourselves
+                       if (i == cl.playerentity)
+                               continue;
+
+                       // don't hit players that don't exist
+                       if (!cl.scores[i-1].name[0])
+                               continue;
+
+                       if(gamemode == GAME_NEXUIZ)
+                       {
+                               // don't hit spectators or nonsolid players
+                               if(cl.scores[i-1].frags == -666 || cl.scores[i-1].frags == -616)
+                                       continue;
+                       }
+
+                       Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
+                       VectorAdd(origin, cl.playerstandmins, entmins);
+                       VectorAdd(origin, cl.playerstandmaxs, entmaxs);
+                       if (!BoxesOverlap(clipboxmins, clipboxmaxs, entmins, entmaxs))
+                               continue;
+                       Matrix4x4_CreateTranslate(&entmatrix, origin[0], origin[1], origin[2]);
+                       Matrix4x4_CreateTranslate(&entinversematrix, -origin[0], -origin[1], -origin[2]);
+                       Collision_ClipLineToGenericEntity(&trace, NULL, 0, cl.playerstandmins, cl.playerstandmaxs, SUPERCONTENTS_BODY, &entmatrix, &entinversematrix, start, end, hitsupercontentsmask);
+                       if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
+                               *hitnetworkentity = i;
+                       Collision_CombineTraces(&cliptrace, &trace, NULL, false);
+               }
+
+skipnetworkplayers:
+               ;
+       }
+
+       // 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
+       // note: if prog is NULL then there won't be any linked entities
+       numtouchedicts = 0;
+       if (hitcsqcentities && prog != NULL)
+       {
+               numtouchedicts = World_EntitiesInBox(&cl.world, clipboxmins, clipboxmaxs, MAX_EDICTS, touchedicts);
+               if (numtouchedicts > MAX_EDICTS)
+               {
+                       // this never happens
+                       Con_Printf("CL_EntitiesInBox returned %i edicts, max was %i\n", numtouchedicts, MAX_EDICTS);
+                       numtouchedicts = MAX_EDICTS;
+               }
+       }
+       for (i = 0;i < numtouchedicts;i++)
+       {
+               touch = touchedicts[i];
+
+               if (touch->fields.client->solid < SOLID_BBOX)
+                       continue;
+               if (type == MOVE_NOMONSTERS && touch->fields.client->solid != SOLID_BSP)
+                       continue;
+
+               if (passedict)
+               {
+                       // don't clip against self
+                       if (passedict == touch)
+                               continue;
+                       // don't clip owned entities against owner
+                       if (traceowner == touch)
+                               continue;
+                       // don't clip owner against owned entities
+                       if (passedictprog == touch->fields.client->owner)
+                               continue;
+                       // don't clip points against points (they can't collide)
+                       if (VectorCompare(touch->fields.client->mins, touch->fields.client->maxs) && (type != MOVE_MISSILE || !((int)touch->fields.client->flags & FL_MONSTER)))
+                               continue;
+               }
+
+               bodysupercontents = touch->fields.client->solid == SOLID_CORPSE ? SUPERCONTENTS_CORPSE : SUPERCONTENTS_BODY;
+
+               // might interact, so do an exact clip
+               model = NULL;
+               if ((int) touch->fields.client->solid == SOLID_BSP || type == MOVE_HITMODEL)
+               {
+                       unsigned int modelindex = (unsigned int)touch->fields.client->modelindex;
+                       // if the modelindex is 0, it shouldn't be SOLID_BSP!
+                       if (modelindex > 0 && modelindex < MAX_MODELS)
+                               model = cl.model_precache[(int)touch->fields.client->modelindex];
+               }
+               if (model)
+                       Matrix4x4_CreateFromQuakeEntity(&matrix, touch->fields.client->origin[0], touch->fields.client->origin[1], touch->fields.client->origin[2], touch->fields.client->angles[0], touch->fields.client->angles[1], touch->fields.client->angles[2], 1);
+               else
+                       Matrix4x4_CreateTranslate(&matrix, touch->fields.client->origin[0], touch->fields.client->origin[1], touch->fields.client->origin[2]);
+               Matrix4x4_Invert_Simple(&imatrix, &matrix);
+               if (type == MOVE_MISSILE && (int)touch->fields.client->flags & FL_MONSTER)
+                       Collision_ClipToGenericEntity(&trace, model, (int) touch->fields.client->frame, touch->fields.client->mins, touch->fields.client->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipmins2, clipmaxs2, clipend, hitsupercontentsmask);
+               else
+                       Collision_ClipLineToGenericEntity(&trace, model, (int) touch->fields.client->frame, touch->fields.client->mins, touch->fields.client->maxs, bodysupercontents, &matrix, &imatrix, clipstart, clipend, hitsupercontentsmask);
+
+               if (cliptrace.realfraction > trace.realfraction && hitnetworkentity)
+                       *hitnetworkentity = 0;
+               Collision_CombineTraces(&cliptrace, &trace, (void *)touch, touch->fields.client->solid == SOLID_BSP);
+       }
+
+finished:
+#ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
+       if(!VectorCompare(start, pEnd))
+               Collision_ShortenTrace(&cliptrace, len / (len + 1), pEnd);
+#endif
+       return cliptrace;
+}
+
+/*
+==================
+CL_Move
+==================
+*/
+#ifdef COLLISION_STUPID_TRACE_ENDPOS_IN_SOLID_WORKAROUND
+trace_t CL_TraceBox(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t pEnd, int type, prvm_edict_t *passedict, int hitsupercontentsmask, qboolean hitnetworkbrushmodels, qboolean hitnetworkplayers, int *hitnetworkentity, qboolean hitcsqcentities)
 #else
-trace_t CL_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, qboolean hitnetworkbrushmodels, qboolean hitnetworkplayers, int *hitnetworkentity, qboolean hitcsqcentities)
+trace_t CL_TraceBox(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, prvm_edict_t *passedict, int hitsupercontentsmask, qboolean hitnetworkbrushmodels, qboolean hitnetworkplayers, int *hitnetworkentity, qboolean hitcsqcentities)
 #endif
 {
        vec3_t hullmins, hullmaxs;
@@ -270,6 +722,21 @@ trace_t CL_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const
                VectorCopy(pEnd, end);
 #endif
 
+       if (VectorCompare(mins, maxs))
+       {
+               vec3_t shiftstart, shiftend;
+               VectorAdd(start, mins, shiftstart);
+               VectorAdd(end, mins, shiftend);
+               if (VectorCompare(start, end))
+                       return CL_TracePoint(shiftstart, type, passedict, hitsupercontentsmask, hitnetworkbrushmodels, hitnetworkplayers, hitnetworkentity, hitcsqcentities);
+               else
+               {
+                       trace = CL_TraceLine(shiftstart, shiftend, type, passedict, hitsupercontentsmask, hitnetworkbrushmodels, hitnetworkplayers, hitnetworkentity, hitcsqcentities);
+                       VectorSubtract(trace.endpos, mins, trace.endpos);
+                       return trace;
+               }
+       }
+
        if (hitnetworkentity)
                *hitnetworkentity = 0;