X-Git-Url: http://de.git.xonotic.org/?a=blobdiff_plain;f=world.c;h=85a53826222b91bb7c7d8de5ec696f6f2f817149;hb=c8630f49b9fe6321ff9778ea79bd062d812e513d;hp=31dddb51ebd6a9c5116f9c487065a8a92580785a;hpb=08489c3f40fec505da1c0af823e388a5f53a1560;p=xonotic%2Fdarkplaces.git

diff --git a/world.c b/world.c
index 31dddb51..85a53826 100644
--- a/world.c
+++ b/world.c
@@ -25,76 +25,77 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 entities never clip against themselves, or their owner
 
-line of sight checks trace->crosscontent, but bullets don't
+line of sight checks trace->inopen and trace->inwater, but bullets don't
 
 */
 
+cvar_t sv_debugmove = {CVAR_NOTIFY, "sv_debugmove", "0"};
+cvar_t sv_polygoncollisions = {CVAR_NOTIFY, "sv_polygoncollisions", "0"};
+cvar_t sv_areagrid_mingridsize = {CVAR_NOTIFY, "sv_areagrid_mingridsize", "64"};
 
-void ClearLink (link_t *l);
-void RemoveLink (link_t *l);
-void InsertLinkBefore (link_t *l, link_t *before);
-void InsertLinkAfter (link_t *l, link_t *after);
+void SV_AreaStats_f(void);
 
-#define	EDICT_FROM_AREA(l) ((edict_t *)((qbyte *)l - (int)&(((edict_t *)0)->area)))
-
-//============================================================================
-
-// ClearLink is used for new headnodes
-void ClearLink (link_t *l)
-{
-	l->prev = l->next = l;
-}
-
-void RemoveLink (link_t *l)
-{
-	l->next->prev = l->prev;
-	l->prev->next = l->next;
-}
-
-void InsertLinkBefore (link_t *l, link_t *before)
-{
-	l->next = before;
-	l->prev = before->prev;
-	l->prev->next = l;
-	l->next->prev = l;
-}
-void InsertLinkAfter (link_t *l, link_t *after)
+void SV_World_Init(void)
 {
-	l->next = after->next;
-	l->prev = after;
-	l->prev->next = l;
-	l->next->prev = l;
+	Cvar_RegisterVariable(&sv_debugmove);
+	Cvar_RegisterVariable(&sv_polygoncollisions);
+	Cvar_RegisterVariable(&sv_areagrid_mingridsize);
+	Cmd_AddCommand("sv_areastats", SV_AreaStats_f);
+	Collision_Init();
 }
 
-
 typedef struct
 {
 	// bounding box of entire move area
-	vec3_t		boxmins, boxmaxs;
+	vec3_t boxmins, boxmaxs;
 
 	// size of the moving object
-	vec3_t		mins, maxs;
+	vec3_t mins, maxs;
 
 	// size when clipping against monsters
-	vec3_t		mins2, maxs2;
+	vec3_t mins2, maxs2;
 
 	// size when clipping against brush models
-	vec3_t		hullmins, hullmaxs;
+	vec3_t hullmins, hullmaxs;
 
 	// start and end origin of move
-	vec3_t		start, end;
+	vec3_t start, end;
 
 	// trace results
-	trace_t		trace;
+	trace_t trace;
 
 	// type of move (like ignoring monsters, or similar)
-	int			type;
+	int type;
 
 	// the edict that is moving (if any)
-	edict_t		*passedict;
+	edict_t *passedict;
 }
 moveclip_t;
 
+//============================================================================
+
+// ClearLink is used for new headnodes
+static void ClearLink (link_t *l)
+{
+	l->entitynumber = 0;
+	l->prev = l->next = l;
+}
+
+static void RemoveLink (link_t *l)
+{
+	l->next->prev = l->prev;
+	l->prev->next = l->next;
+}
+
+static void InsertLinkBefore (link_t *l, link_t *before, int entitynumber)
+{
+	l->entitynumber = entitynumber;
+	l->next = before;
+	l->prev = before->prev;
+	l->prev->next = l;
+	l->next->prev = l;
+}
+
 
 /*
 ===============================================================================
@@ -104,64 +105,59 @@ ENTITY AREA CHECKING
 ===============================================================================
 */
 
-typedef struct areanode_s
-{
-	int		axis;		// -1 = leaf node
-	float	dist;
-	struct areanode_s	*children[2];
-	link_t	trigger_edicts;
-	link_t	solid_edicts;
-} areanode_t;
-
-#define	AREA_DEPTH	4
-#define	AREA_NODES	32
-
-static	areanode_t	sv_areanodes[AREA_NODES];
-static	int			sv_numareanodes;
+int sv_areagrid_stats_calls = 0;
+int sv_areagrid_stats_nodechecks = 0;
+int sv_areagrid_stats_entitychecks = 0;
 
-/*
-===============
-SV_CreateAreaNode
+void SV_AreaStats_f(void)
+{
+	Con_Printf("areagrid check stats: %d calls %d nodes (%f per call) %d entities (%f per call)\n", sv_areagrid_stats_calls, sv_areagrid_stats_nodechecks, (double) sv_areagrid_stats_nodechecks / (double) sv_areagrid_stats_calls, sv_areagrid_stats_entitychecks, (double) sv_areagrid_stats_entitychecks / (double) sv_areagrid_stats_calls);
+	sv_areagrid_stats_calls = 0;
+	sv_areagrid_stats_nodechecks = 0;
+	sv_areagrid_stats_entitychecks = 0;
+}
 
-===============
-*/
-areanode_t *SV_CreateAreaNode (int depth, vec3_t mins, vec3_t maxs)
+typedef struct areagrid_s
 {
-	areanode_t	*anode;
-	vec3_t		size;
-	vec3_t		mins1, maxs1, mins2, maxs2;
+	link_t trigger_edicts;
+	link_t solid_edicts;
+}
+areagrid_t;
 
-	anode = &sv_areanodes[sv_numareanodes];
-	sv_numareanodes++;
+#define AREA_GRID 512
+#define AREA_GRIDNODES (AREA_GRID * AREA_GRID)
 
-	ClearLink (&anode->trigger_edicts);
-	ClearLink (&anode->solid_edicts);
+static areagrid_t sv_areagrid[AREA_GRIDNODES], sv_areagrid_outside;
+static vec3_t sv_areagrid_bias, sv_areagrid_scale, sv_areagrid_mins, sv_areagrid_maxs, sv_areagrid_size;
+static int sv_areagrid_marknumber = 1;
 
-	if (depth == AREA_DEPTH)
+void SV_CreateAreaGrid (vec3_t mins, vec3_t maxs)
+{
+	int i;
+	ClearLink (&sv_areagrid_outside.trigger_edicts);
+	ClearLink (&sv_areagrid_outside.solid_edicts);
+	// choose either the world box size, or a larger box to ensure the grid isn't too fine
+	sv_areagrid_size[0] = max(maxs[0] - mins[0], AREA_GRID * sv_areagrid_mingridsize.value);
+	sv_areagrid_size[1] = max(maxs[1] - mins[1], AREA_GRID * sv_areagrid_mingridsize.value);
+	sv_areagrid_size[2] = max(maxs[2] - mins[2], AREA_GRID * sv_areagrid_mingridsize.value);
+	// figure out the corners of such a box, centered at the center of the world box
+	sv_areagrid_mins[0] = (mins[0] + maxs[0] - sv_areagrid_size[0]) * 0.5f;
+	sv_areagrid_mins[1] = (mins[1] + maxs[1] - sv_areagrid_size[1]) * 0.5f;
+	sv_areagrid_mins[2] = (mins[2] + maxs[2] - sv_areagrid_size[2]) * 0.5f;
+	sv_areagrid_maxs[0] = (mins[0] + maxs[0] + sv_areagrid_size[0]) * 0.5f;
+	sv_areagrid_maxs[1] = (mins[1] + maxs[1] + sv_areagrid_size[1]) * 0.5f;
+	sv_areagrid_maxs[2] = (mins[2] + maxs[2] + sv_areagrid_size[2]) * 0.5f;
+	// now calculate the actual useful info from that
+	VectorNegate(sv_areagrid_mins, sv_areagrid_bias);
+	sv_areagrid_scale[0] = AREA_GRID / sv_areagrid_size[0];
+	sv_areagrid_scale[1] = AREA_GRID / sv_areagrid_size[1];
+	sv_areagrid_scale[2] = AREA_GRID / sv_areagrid_size[2];
+	for (i = 0;i < AREA_GRIDNODES;i++)
 	{
-		anode->axis = -1;
-		anode->children[0] = anode->children[1] = NULL;
-		return anode;
+		ClearLink (&sv_areagrid[i].trigger_edicts);
+		ClearLink (&sv_areagrid[i].solid_edicts);
 	}
-
-	VectorSubtract (maxs, mins, size);
-	if (size[0] > size[1])
-		anode->axis = 0;
-	else
-		anode->axis = 1;
-
-	anode->dist = 0.5 * (maxs[anode->axis] + mins[anode->axis]);
-	VectorCopy (mins, mins1);
-	VectorCopy (mins, mins2);
-	VectorCopy (maxs, maxs1);
-	VectorCopy (maxs, maxs2);
-
-	maxs1[anode->axis] = mins2[anode->axis] = anode->dist;
-
-	anode->children[0] = SV_CreateAreaNode (depth+1, mins2, maxs2);
-	anode->children[1] = SV_CreateAreaNode (depth+1, mins1, maxs1);
-
-	return anode;
+	Con_DPrintf("sv_areagrid settings: divisions %ix%ix1 : box %f %f %f : %f %f %f size %f %f %f grid %f %f %f (mingrid %f)\n", AREA_GRID, AREA_GRID, sv_areagrid_mins[0], sv_areagrid_mins[1], sv_areagrid_mins[2], sv_areagrid_maxs[0], sv_areagrid_maxs[1], sv_areagrid_maxs[2], sv_areagrid_size[0], sv_areagrid_size[1], sv_areagrid_size[2], 1.0f / sv_areagrid_scale[0], 1.0f / sv_areagrid_scale[1], 1.0f / sv_areagrid_scale[2], sv_areagrid_mingridsize.value);
 }
 
 /*
@@ -172,12 +168,8 @@ SV_ClearWorld
 */
 void SV_ClearWorld (void)
 {
-	Collision_Init ();
-
-	memset (sv_areanodes, 0, sizeof(sv_areanodes));
-	sv_numareanodes = 0;
 	Mod_CheckLoaded(sv.worldmodel);
-	SV_CreateAreaNode (0, sv.worldmodel->normalmins, sv.worldmodel->normalmaxs);
+	SV_CreateAreaGrid(sv.worldmodel->normalmins, sv.worldmodel->normalmaxs);
 }
 
 
@@ -189,40 +181,53 @@ SV_UnlinkEdict
 */
 void SV_UnlinkEdict (edict_t *ent)
 {
-	if (!ent->area.prev)
-		return;		// not linked in anywhere
-	RemoveLink (&ent->area);
-	ent->area.prev = ent->area.next = NULL;
+	int i;
+	for (i = 0;i < ENTITYGRIDAREAS;i++)
+	{
+		if (ent->e->areagrid[i].prev)
+		{
+			RemoveLink (&ent->e->areagrid[i]);
+			ent->e->areagrid[i].prev = ent->e->areagrid[i].next = NULL;
+		}
+	}
 }
 
 
-/*
-====================
-SV_TouchLinks
-====================
-*/
-void SV_TouchLinks ( edict_t *ent, areanode_t *node )
+void SV_TouchAreaGrid(edict_t *ent)
 {
-	link_t		*l, *next;
-	edict_t		*touch;
-	int			old_self, old_other;
-
-loc0:
-// touch linked edicts
-	for (l = node->trigger_edicts.next ; l != &node->trigger_edicts ; l = next)
+	link_t *l, *next;
+	edict_t *touch;
+	areagrid_t *grid;
+	int old_self, old_other, igrid[3], igridmins[3], igridmaxs[3];
+
+	sv_areagrid_marknumber++;
+	igridmins[0] = (int) ((ent->v->absmin[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
+	igridmins[1] = (int) ((ent->v->absmin[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
+	//igridmins[2] = (int) ((ent->v->absmin[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
+	igridmaxs[0] = (int) ((ent->v->absmax[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
+	igridmaxs[1] = (int) ((ent->v->absmax[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
+	//igridmaxs[2] = (int) ((ent->v->absmax[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
+	igridmins[0] = max(0, igridmins[0]);
+	igridmins[1] = max(0, igridmins[1]);
+	//igridmins[2] = max(0, igridmins[2]);
+	igridmaxs[0] = min(AREA_GRID, igridmaxs[0]);
+	igridmaxs[1] = min(AREA_GRID, igridmaxs[1]);
+	//igridmaxs[2] = min(AREA_GRID, igridmaxs[2]);
+
+	for (l = sv_areagrid_outside.trigger_edicts.next;l != &sv_areagrid_outside.trigger_edicts;l = next)
 	{
 		next = l->next;
-		touch = EDICT_FROM_AREA(l);
-		if (touch == ent)
+		touch = EDICT_NUM(l->entitynumber);
+		if (ent->v->absmin[0] > touch->v->absmax[0]
+		 || ent->v->absmax[0] < touch->v->absmin[0]
+		 || ent->v->absmin[1] > touch->v->absmax[1]
+		 || ent->v->absmax[1] < touch->v->absmin[1]
+		 || ent->v->absmin[2] > touch->v->absmax[2]
+		 || ent->v->absmax[2] < touch->v->absmin[2])
 			continue;
-		if (!touch->v.touch || touch->v.solid != SOLID_TRIGGER)
+		if (touch == ent)
 			continue;
-		if (ent->v.absmin[0] > touch->v.absmax[0]
-		 || ent->v.absmin[1] > touch->v.absmax[1]
-		 || ent->v.absmin[2] > touch->v.absmax[2]
-		 || ent->v.absmax[0] < touch->v.absmin[0]
-		 || ent->v.absmax[1] < touch->v.absmin[1]
-		 || ent->v.absmax[2] < touch->v.absmin[2])
+		if (!touch->v->touch || touch->v->solid != SOLID_TRIGGER)
 			continue;
 		old_self = pr_global_struct->self;
 		old_other = pr_global_struct->other;
@@ -230,34 +235,86 @@ loc0:
 		pr_global_struct->self = EDICT_TO_PROG(touch);
 		pr_global_struct->other = EDICT_TO_PROG(ent);
 		pr_global_struct->time = sv.time;
-		PR_ExecuteProgram (touch->v.touch, "");
+		PR_ExecuteProgram (touch->v->touch, "");
 
 		pr_global_struct->self = old_self;
 		pr_global_struct->other = old_other;
 	}
 
-// recurse down both sides
-	if (node->axis == -1)
-		return;
+	for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
+	{
+		grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0];
+		for (igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++)
+		{
+			for (l = grid->trigger_edicts.next;l != &grid->trigger_edicts;l = next)
+			{
+				next = l->next;
+				touch = EDICT_NUM(l->entitynumber);
+				if (touch->e->areagridmarknumber == sv_areagrid_marknumber)
+					continue;
+				touch->e->areagridmarknumber = sv_areagrid_marknumber;
+				if (ent->v->absmin[0] > touch->v->absmax[0]
+				 || ent->v->absmax[0] < touch->v->absmin[0]
+				 || ent->v->absmin[1] > touch->v->absmax[1]
+				 || ent->v->absmax[1] < touch->v->absmin[1]
+				 || ent->v->absmin[2] > touch->v->absmax[2]
+				 || ent->v->absmax[2] < touch->v->absmin[2])
+					continue;
+				// LordHavoc: id bug that won't be fixed: triggers do not ignore their owner like solid objects do
+				if (touch == ent)
+					continue;
+				if (!touch->v->touch || touch->v->solid != SOLID_TRIGGER)
+					continue;
+				old_self = pr_global_struct->self;
+				old_other = pr_global_struct->other;
+
+				pr_global_struct->self = EDICT_TO_PROG(touch);
+				pr_global_struct->other = EDICT_TO_PROG(ent);
+				pr_global_struct->time = sv.time;
+				PR_ExecuteProgram (touch->v->touch, "");
+
+				pr_global_struct->self = old_self;
+				pr_global_struct->other = old_other;
+			}
+		}
+	}
+}
 
-	if (ent->v.absmax[node->axis] > node->dist)
+void SV_LinkEdict_AreaGrid(edict_t *ent)
+{
+	areagrid_t *grid;
+	int igrid[3], igridmins[3], igridmaxs[3], gridnum;
+
+	igridmins[0] = (int) ((ent->v->absmin[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
+	igridmins[1] = (int) ((ent->v->absmin[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
+	//igridmins[2] = (int) ((ent->v->absmin[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
+	igridmaxs[0] = (int) ((ent->v->absmax[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
+	igridmaxs[1] = (int) ((ent->v->absmax[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
+	//igridmaxs[2] = (int) ((ent->v->absmax[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
+	if (igridmins[0] < 0 || igridmaxs[0] > AREA_GRID || igridmins[1] < 0 || igridmaxs[1] > AREA_GRID || ((igridmaxs[0] - igridmins[0]) * (igridmaxs[1] - igridmins[1])) > ENTITYGRIDAREAS)
 	{
-		if (ent->v.absmin[node->axis] < node->dist)
-			SV_TouchLinks(ent, node->children[1]); // order reversed to reduce code
-		node = node->children[0];
-		goto loc0;
+		// wow, something outside the grid, store it as such
+		if (ent->v->solid == SOLID_TRIGGER)
+			InsertLinkBefore (&ent->e->areagrid[0], &sv_areagrid_outside.trigger_edicts, NUM_FOR_EDICT(ent));
+		else
+			InsertLinkBefore (&ent->e->areagrid[0], &sv_areagrid_outside.solid_edicts, NUM_FOR_EDICT(ent));
+		return;
 	}
-	else
+
+	gridnum = 0;
+	for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
 	{
-		if (ent->v.absmin[node->axis] < node->dist)
+		grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0];
+		for (igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++, gridnum++)
 		{
-			node = node->children[1];
-			goto loc0;
+			if (ent->v->solid == SOLID_TRIGGER)
+				InsertLinkBefore (&ent->e->areagrid[gridnum], &grid->trigger_edicts, NUM_FOR_EDICT(ent));
+			else
+				InsertLinkBefore (&ent->e->areagrid[gridnum], &grid->solid_edicts, NUM_FOR_EDICT(ent));
 		}
 	}
 }
 
-
 /*
 ===============
 SV_LinkEdict
@@ -266,111 +323,91 @@ SV_LinkEdict
 */
 void SV_LinkEdict (edict_t *ent, qboolean touch_triggers)
 {
-	model_t		*model;
-	areanode_t	*node;
+	model_t *model;
 
-	if (ent->area.prev)
+	if (ent->e->areagrid[0].prev)
 		SV_UnlinkEdict (ent);	// unlink from old position
 
 	if (ent == sv.edicts)
 		return;		// don't add the world
 
-	if (ent->free)
+	if (ent->e->free)
 		return;
 
 // set the abs box
 
-	if (ent->v.solid == SOLID_BSP)
+	if (ent->v->solid == SOLID_BSP)
 	{
-		if (ent->v.modelindex < 0 || ent->v.modelindex > MAX_MODELS)
-			PR_RunError("SOLID_BSP with invalid modelindex!\n");
-		model = sv.models[(int) ent->v.modelindex];
+		if (ent->v->modelindex < 0 || ent->v->modelindex > MAX_MODELS)
+			Host_Error("SOLID_BSP with invalid modelindex!\n");
+		model = sv.models[(int) ent->v->modelindex];
 		if (model != NULL)
 		{
 			if (model->type != mod_brush)
-				PR_RunError("SOLID_BSP with non-BSP model\n");
+				Host_Error("SOLID_BSP with non-BSP model\n");
 
-			if (ent->v.angles[0] || ent->v.angles[2] || ent->v.avelocity[0] || ent->v.avelocity[2])
+			if (ent->v->angles[0] || ent->v->angles[2] || ent->v->avelocity[0] || ent->v->avelocity[2])
 			{
-				VectorAdd(ent->v.origin, model->rotatedmins, ent->v.absmin);
-				VectorAdd(ent->v.origin, model->rotatedmaxs, ent->v.absmax);
+				VectorAdd(ent->v->origin, model->rotatedmins, ent->v->absmin);
+				VectorAdd(ent->v->origin, model->rotatedmaxs, ent->v->absmax);
 			}
-			else if (ent->v.angles[1] || ent->v.avelocity[1])
+			else if (ent->v->angles[1] || ent->v->avelocity[1])
 			{
-				VectorAdd(ent->v.origin, model->yawmins, ent->v.absmin);
-				VectorAdd(ent->v.origin, model->yawmaxs, ent->v.absmax);
+				VectorAdd(ent->v->origin, model->yawmins, ent->v->absmin);
+				VectorAdd(ent->v->origin, model->yawmaxs, ent->v->absmax);
 			}
 			else
 			{
-				VectorAdd(ent->v.origin, model->normalmins, ent->v.absmin);
-				VectorAdd(ent->v.origin, model->normalmaxs, ent->v.absmax);
+				VectorAdd(ent->v->origin, model->normalmins, ent->v->absmin);
+				VectorAdd(ent->v->origin, model->normalmaxs, ent->v->absmax);
 			}
 		}
 		else
 		{
 			// SOLID_BSP with no model is valid, mainly because some QC setup code does so temporarily
-			VectorAdd (ent->v.origin, ent->v.mins, ent->v.absmin);
-			VectorAdd (ent->v.origin, ent->v.maxs, ent->v.absmax);
+			VectorAdd(ent->v->origin, ent->v->mins, ent->v->absmin);
+			VectorAdd(ent->v->origin, ent->v->maxs, ent->v->absmax);
 		}
 	}
 	else
 	{
-		VectorAdd (ent->v.origin, ent->v.mins, ent->v.absmin);
-		VectorAdd (ent->v.origin, ent->v.maxs, ent->v.absmax);
+		VectorAdd(ent->v->origin, ent->v->mins, ent->v->absmin);
+		VectorAdd(ent->v->origin, ent->v->maxs, ent->v->absmax);
 	}
 
 //
 // to make items easier to pick up and allow them to be grabbed off
 // of shelves, the abs sizes are expanded
 //
-	if ((int)ent->v.flags & FL_ITEM)
+	if ((int)ent->v->flags & FL_ITEM)
 	{
-		ent->v.absmin[0] -= 15;
-		ent->v.absmin[1] -= 15;
-		ent->v.absmin[2] -= 1;
-		ent->v.absmax[0] += 15;
-		ent->v.absmax[1] += 15;
-		ent->v.absmax[2] += 1;
+		ent->v->absmin[0] -= 15;
+		ent->v->absmin[1] -= 15;
+		ent->v->absmin[2] -= 1;
+		ent->v->absmax[0] += 15;
+		ent->v->absmax[1] += 15;
+		ent->v->absmax[2] += 1;
 	}
 	else
 	{
 		// because movement is clipped an epsilon away from an actual edge,
 		// we must fully check even when bounding boxes don't quite touch
-		ent->v.absmin[0] -= 1;
-		ent->v.absmin[1] -= 1;
-		ent->v.absmin[2] -= 1;
-		ent->v.absmax[0] += 1;
-		ent->v.absmax[1] += 1;
-		ent->v.absmax[2] += 1;
+		ent->v->absmin[0] -= 1;
+		ent->v->absmin[1] -= 1;
+		ent->v->absmin[2] -= 1;
+		ent->v->absmax[0] += 1;
+		ent->v->absmax[1] += 1;
+		ent->v->absmax[2] += 1;
 	}
 
-	if (ent->v.solid == SOLID_NOT)
+	if (ent->v->solid == SOLID_NOT)
 		return;
 
-// find the first node that the ent's box crosses
-	node = sv_areanodes;
-	while (1)
-	{
-		if (node->axis == -1)
-			break;
-		if (ent->v.absmin[node->axis] > node->dist)
-			node = node->children[0];
-		else if (ent->v.absmax[node->axis] < node->dist)
-			node = node->children[1];
-		else
-			break;		// crosses the node
-	}
-
-// link it in
-
-	if (ent->v.solid == SOLID_TRIGGER)
-		InsertLinkBefore (&ent->area, &node->trigger_edicts);
-	else
-		InsertLinkBefore (&ent->area, &node->solid_edicts);
+	SV_LinkEdict_AreaGrid(ent);
 
 // if touch_triggers, touch all entities at this node and descend for more
 	if (touch_triggers)
-		SV_TouchLinks ( ent, sv_areanodes );
+		SV_TouchAreaGrid(ent);
 }
 
 
@@ -392,7 +429,7 @@ This could be a lot more efficient...
 */
 int SV_TestEntityPosition (edict_t *ent)
 {
-	return SV_Move (ent->v.origin, ent->v.mins, ent->v.maxs, ent->v.origin, MOVE_NORMAL, ent).startsolid;
+	return SV_Move (ent->v->origin, ent->v->mins, ent->v->maxs, ent->v->origin, MOVE_NORMAL, ent).startsolid;
 }
 
 
@@ -418,14 +455,14 @@ trace_t SV_ClipMoveToEntity (edict_t *ent, vec3_t start, vec3_t mins, vec3_t max
 	trace_t trace;
 	model_t *model;
 
-	i = ent->v.modelindex;
+	i = ent->v->modelindex;
 	if ((unsigned int) i >= MAX_MODELS)
-		PR_RunError("SV_ClipMoveToEntity: invalid modelindex\n");
+		Host_Error("SV_ClipMoveToEntity: invalid modelindex\n");
 	model = sv.models[i];
 	if (i != 0 && model == NULL)
-		PR_RunError("SV_ClipMoveToEntity: invalid modelindex\n");
+		Host_Error("SV_ClipMoveToEntity: invalid modelindex\n");
 
-	if ((int) ent->v.solid == SOLID_BSP)
+	if ((int) ent->v->solid == SOLID_BSP)
 	{
 		Mod_CheckLoaded(model);
 		if (model->type != mod_brush)
@@ -434,76 +471,78 @@ trace_t SV_ClipMoveToEntity (edict_t *ent, vec3_t start, vec3_t mins, vec3_t max
 			ED_Print (ent);
 			Host_Error ("SV_ClipMoveToEntity: SOLID_BSP with a non bsp model\n");
 		}
-		if (ent->v.movetype != MOVETYPE_PUSH)
+		if (ent->v->movetype != MOVETYPE_PUSH)
 			Host_Error ("SV_ClipMoveToEntity: SOLID_BSP without MOVETYPE_PUSH");
 	}
 
-	Collision_ClipTrace(&trace, ent, model, ent->v.origin, ent->v.angles, ent->v.mins, ent->v.maxs, start, mins, maxs, end);
+	if (sv_polygoncollisions.integer && (mins[0] != maxs[0] || mins[1] != maxs[1] || mins[2] != maxs[2]))
+		Collision_PolygonClipTrace(&trace, ent, model, ent->v->origin, ent->v->angles, ent->v->mins, ent->v->maxs, start, mins, maxs, end);
+	else
+		Collision_ClipTrace(&trace, ent, model, ent->v->origin, ent->v->angles, ent->v->mins, ent->v->maxs, start, mins, maxs, end);
 
 	return trace;
 }
 
 //===========================================================================
 
-/*
-====================
-SV_ClipToLinks
-
-Mins and maxs enclose the entire area swept by the move
-====================
-*/
-void SV_ClipToLinks ( areanode_t *node, moveclip_t *clip )
+void SV_ClipToNode(moveclip_t *clip, link_t *list)
 {
-	link_t		*l, *next;
-	edict_t		*touch;
-	trace_t		trace;
+	link_t *l, *next;
+	edict_t *touch;
+	trace_t trace;
 
-loc0:
-	if (clip->trace.allsolid)
-		return;
-// touch linked edicts
-	for (l = node->solid_edicts.next ; l != &node->solid_edicts ; l = next)
+	sv_areagrid_stats_nodechecks++;
+	for (l = list->next;l != list;l = next)
 	{
 		next = l->next;
-		touch = EDICT_FROM_AREA(l);
-		if (touch->v.solid == SOLID_NOT)
+		touch = EDICT_NUM(l->entitynumber);
+		if (touch->e->areagridmarknumber == sv_areagrid_marknumber)
 			continue;
-		if (touch == clip->passedict)
+		touch->e->areagridmarknumber = sv_areagrid_marknumber;
+		sv_areagrid_stats_entitychecks++;
+
+		if (clip->boxmins[0] > touch->v->absmax[0]
+		 || clip->boxmaxs[0] < touch->v->absmin[0]
+		 || clip->boxmins[1] > touch->v->absmax[1]
+		 || clip->boxmaxs[1] < touch->v->absmin[1]
+		 || clip->boxmins[2] > touch->v->absmax[2]
+		 || clip->boxmaxs[2] < touch->v->absmin[2])
 			continue;
-		if (touch->v.solid == SOLID_TRIGGER)
-			Host_Error ("Trigger in clipping list");
 
-		if (clip->type == MOVE_NOMONSTERS && touch->v.solid != SOLID_BSP)
+		if (clip->type == MOVE_NOMONSTERS && touch->v->solid != SOLID_BSP)
 			continue;
 
-		if (clip->boxmins[0] > touch->v.absmax[0]
-		 || clip->boxmaxs[0] < touch->v.absmin[0]
-		 || clip->boxmins[1] > touch->v.absmax[1]
-		 || clip->boxmaxs[1] < touch->v.absmin[1]
-		 || clip->boxmins[2] > touch->v.absmax[2]
-		 || clip->boxmaxs[2] < touch->v.absmin[2])
+		if (touch->v->solid == SOLID_NOT)
 			continue;
 
 		if (clip->passedict)
 		{
-			if (clip->passedict->v.size[0] && !touch->v.size[0])
+			if (clip->passedict->v->size[0] && !touch->v->size[0])
 				continue;	// points never interact
-		 	if (PROG_TO_EDICT(touch->v.owner) == clip->passedict)
+			if (PROG_TO_EDICT(touch->v->owner) == clip->passedict)
 				continue;	// don't clip against own missiles
-			if (PROG_TO_EDICT(clip->passedict->v.owner) == touch)
+			if (PROG_TO_EDICT(clip->passedict->v->owner) == touch)
 				continue;	// don't clip against owner
 			// LordHavoc: corpse code
-			if (clip->passedict->v.solid == SOLID_CORPSE && (touch->v.solid == SOLID_SLIDEBOX || touch->v.solid == SOLID_CORPSE))
+			if (clip->passedict->v->solid == SOLID_CORPSE && (touch->v->solid == SOLID_SLIDEBOX || touch->v->solid == SOLID_CORPSE))
 				continue;
-			if (clip->passedict->v.solid == SOLID_SLIDEBOX && touch->v.solid == SOLID_CORPSE)
+			if (clip->passedict->v->solid == SOLID_SLIDEBOX && touch->v->solid == SOLID_CORPSE)
 				continue;
 		}
 
+		if (touch == clip->passedict)
+			continue;
+		if (touch->v->solid == SOLID_TRIGGER)
+		{
+			ED_Print(touch);
+			Host_Error ("Trigger in clipping list");
+		}
+
 		// might interact, so do an exact clip
-		if ((int)touch->v.flags & FL_MONSTER)
-			trace = SV_ClipMoveToEntity (touch, clip->start, clip->mins2, clip->maxs2, clip->end);
-		else if (touch->v.solid == SOLID_BSP)
+		if (touch->v->solid == SOLID_BSP)
 			trace = SV_ClipMoveToEntity (touch, clip->start, clip->hullmins, clip->hullmaxs, clip->end);
+		else if ((int)touch->v->flags & FL_MONSTER)
+			trace = SV_ClipMoveToEntity (touch, clip->start, clip->mins2, clip->maxs2, clip->end);
 		else
 			trace = SV_ClipMoveToEntity (touch, clip->start, clip->mins, clip->maxs, clip->end);
 		// LordHavoc: take the 'best' answers from the new trace and combine with existing data
@@ -527,24 +566,48 @@ loc0:
 			clip->trace.endcontents = trace.endcontents;
 			clip->trace.ent = trace.ent;
 		}
+		if (clip->trace.allsolid)
+			return;
 	}
+}
 
-// recurse down both sides
-	if (node->axis == -1)
+/*
+====================
+SV_ClipToAreaGrid
+
+Mins and maxs enclose the entire area swept by the move
+====================
+*/
+void SV_ClipToAreaGrid(moveclip_t *clip)
+{
+	areagrid_t *grid;
+	int igrid[3], igridmins[3], igridmaxs[3];
+
+	if (clip->trace.allsolid)
 		return;
 
-	if (clip->boxmaxs[node->axis] > node->dist)
-	{
-		if (clip->boxmins[node->axis] < node->dist)
-			SV_ClipToLinks(node->children[1], clip);
-		node = node->children[0];
-		goto loc0;
-	}
-	else if (clip->boxmins[node->axis] < node->dist)
-	{
-		node = node->children[1];
-		goto loc0;
-	}
+	sv_areagrid_stats_calls++;
+	sv_areagrid_marknumber++;
+	igridmins[0] = (int) ((clip->boxmins[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]);
+	igridmins[1] = (int) ((clip->boxmins[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]);
+	//igridmins[2] = (int) ((clip->boxmins[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]);
+	igridmaxs[0] = (int) ((clip->boxmaxs[0] + sv_areagrid_bias[0]) * sv_areagrid_scale[0]) + 1;
+	igridmaxs[1] = (int) ((clip->boxmaxs[1] + sv_areagrid_bias[1]) * sv_areagrid_scale[1]) + 1;
+	//igridmaxs[2] = (int) ((clip->boxmaxs[2] + sv_areagrid_bias[2]) * sv_areagrid_scale[2]) + 1;
+	igridmins[0] = max(0, igridmins[0]);
+	igridmins[1] = max(0, igridmins[1]);
+	//igridmins[2] = max(0, igridmins[2]);
+	igridmaxs[0] = min(AREA_GRID, igridmaxs[0]);
+	igridmaxs[1] = min(AREA_GRID, igridmaxs[1]);
+	//igridmaxs[2] = min(AREA_GRID, igridmaxs[2]);
+
+	if (sv_areagrid_outside.solid_edicts.next != &sv_areagrid_outside.solid_edicts)
+		SV_ClipToNode(clip, &sv_areagrid_outside.solid_edicts);
+
+	for (igrid[1] = igridmins[1];igrid[1] < igridmaxs[1];igrid[1]++)
+		for (grid = sv_areagrid + igrid[1] * AREA_GRID + igridmins[0], igrid[0] = igridmins[0];igrid[0] < igridmaxs[0];igrid[0]++, grid++)
+			if (grid->solid_edicts.next != &grid->solid_edicts)
+				SV_ClipToNode(clip, &grid->solid_edicts);
 }
 
 
@@ -555,27 +618,30 @@ SV_MoveBounds
 */
 void SV_MoveBounds (vec3_t start, vec3_t mins, vec3_t maxs, vec3_t end, vec3_t boxmins, vec3_t boxmaxs)
 {
-#if 0
-// debug to test against everything
-boxmins[0] = boxmins[1] = boxmins[2] = -999999999;
-boxmaxs[0] = boxmaxs[1] = boxmaxs[2] =  999999999;
-#else
-	int		i;
-
-	for (i=0 ; i<3 ; i++)
+	if (!sv_debugmove.integer)
 	{
-		if (end[i] > start[i])
-		{
-			boxmins[i] = start[i] + mins[i] - 1;
-			boxmaxs[i] = end[i] + maxs[i] + 1;
-		}
-		else
+		int i;
+
+		for (i=0 ; i<3 ; i++)
 		{
-			boxmins[i] = end[i] + mins[i] - 1;
-			boxmaxs[i] = start[i] + maxs[i] + 1;
+			if (end[i] > start[i])
+			{
+				boxmins[i] = start[i] + mins[i] - 1;
+				boxmaxs[i] = end[i] + maxs[i] + 1;
+			}
+			else
+			{
+				boxmins[i] = end[i] + mins[i] - 1;
+				boxmaxs[i] = start[i] + maxs[i] + 1;
+			}
 		}
 	}
-#endif
+	else
+	{
+		// debug to test against everything
+		boxmins[0] = boxmins[1] = boxmins[2] = -999999999;
+		boxmaxs[0] = boxmaxs[1] = boxmaxs[2] =  999999999;
+	}
 }
 
 /*
@@ -629,7 +695,7 @@ trace_t SV_Move (vec3_t start, vec3_t mins, vec3_t maxs, vec3_t end, int type, e
 	// create the bounding box of the entire move
 	SV_MoveBounds ( start, bigmins, bigmaxs, end, clip.boxmins, clip.boxmaxs );
 
-	SV_ClipToLinks ( sv_areanodes, &clip );
+	SV_ClipToAreaGrid(&clip);
 
 	return clip.trace;
 }