X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=blobdiff_plain;f=world.c;h=1945d9066905546373c094a5c0e9d13909ece83e;hp=5880c7cfe8352242822da1f6d75264170a26bb4b;hb=ed6a552a09b67a9499b772b7a60c4e425d7090a4;hpb=6622dc0f50e46953e458b1b30505d2545ae5902b

diff --git a/world.c b/world.c
index 5880c7cf..1945d906 100644
--- a/world.c
+++ b/world.c
@@ -25,288 +25,134 @@ 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
 
 */
 
-/*
-typedef struct link_s
+cvar_t sv_debugmove = {CVAR_NOTIFY, "sv_debugmove", "0"};
+cvar_t sv_areagrid_mingridsize = {CVAR_NOTIFY, "sv_areagrid_mingridsize", "64"};
+
+void SV_AreaStats_f(void);
+
+void SV_World_Init(void)
 {
-	struct link_s	*prev, *next;
-} link_t;
-*/
+	Cvar_RegisterVariable(&sv_debugmove);
+	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;
+
+	// size of the moving object
+	vec3_t mins, maxs;
 
+	// size when clipping against monsters
+	vec3_t mins2, maxs2;
 
-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);
+	// start and end origin of move
+	vec3_t start, end;
 
-// (type *)STRUCT_FROM_LINK(link_t *link, type, member)
-// ent = STRUCT_FROM_LINK(link,entity_t,order)
-// FIXME: remove this mess!
-//#define	STRUCT_FROM_LINK(l,t,m) ((t *)((byte *)l - (int)&(((t *)0)->m)))
+	// trace results
+	trace_t trace;
 
-#define	EDICT_FROM_AREA(l) ((edict_t *)((byte *)l - (int)&(((edict_t *)0)->area)))
+	// type of move (like ignoring monsters, or similar)
+	int type;
+
+	// the edict that is moving (if any)
+	edict_t *passedict;
+}
+moveclip_t;
 
 //============================================================================
 
 // ClearLink is used for new headnodes
-void ClearLink (link_t *l)
+static void ClearLink (link_t *l)
 {
+	l->entitynumber = 0;
 	l->prev = l->next = l;
 }
 
-void RemoveLink (link_t *l)
+static void RemoveLink (link_t *l)
 {
 	l->next->prev = l->prev;
 	l->prev->next = l->next;
 }
 
-void InsertLinkBefore (link_t *l, link_t *before)
+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;
 }
-void InsertLinkAfter (link_t *l, link_t *after)
-{
-	l->next = after->next;
-	l->prev = after;
-	l->prev->next = l;
-	l->next->prev = l;
-}
-
-
-typedef struct
-{
-	vec3_t		boxmins, boxmaxs;// enclose the test object along entire move
-	float		*mins, *maxs;	// size of the moving object
-	vec3_t		mins2, maxs2;	// size when clipping against mosnters
-	float		*start, *end;
-	trace_t		trace;
-	int			type;
-	edict_t		*passedict;
-} moveclip_t;
 
 
 /*
 ===============================================================================
 
-HULL BOXES
+ENTITY AREA CHECKING
 
 ===============================================================================
 */
 
+int sv_areagrid_stats_calls = 0;
+int sv_areagrid_stats_nodechecks = 0;
+int sv_areagrid_stats_entitychecks = 0;
 
-static	hull_t		box_hull;
-static	dclipnode_t	box_clipnodes[6];
-static	mplane_t	box_planes[6];
-
-/*
-===================
-SV_InitBoxHull
-
-Set up the planes and clipnodes so that the six floats of a bounding box
-can just be stored out and get a proper hull_t structure.
-===================
-*/
-void SV_InitBoxHull (void)
+void SV_AreaStats_f(void)
 {
-	int		i;
-	int		side;
-
-	box_hull.clipnodes = box_clipnodes;
-	box_hull.planes = box_planes;
-	box_hull.firstclipnode = 0;
-	box_hull.lastclipnode = 5;
-
-	for (i=0 ; i<6 ; i++)
-	{
-		box_clipnodes[i].planenum = i;
-		
-		side = i&1;
-		
-		box_clipnodes[i].children[side] = CONTENTS_EMPTY;
-		if (i != 5)
-			box_clipnodes[i].children[side^1] = i + 1;
-		else
-			box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
-		
-		box_planes[i].type = i>>1;
-		box_planes[i].normal[i>>1] = 1;
-	}
-	
+	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;
 }
 
-
-/*
-===================
-SV_HullForBox
-
-To keep everything totally uniform, bounding boxes are turned into small
-BSP trees instead of being compared directly.
-===================
-*/
-hull_t	*SV_HullForBox (vec3_t mins, vec3_t maxs)
+typedef struct areagrid_s
 {
-	box_planes[0].dist = maxs[0];
-	box_planes[1].dist = mins[0];
-	box_planes[2].dist = maxs[1];
-	box_planes[3].dist = mins[1];
-	box_planes[4].dist = maxs[2];
-	box_planes[5].dist = mins[2];
-
-	return &box_hull;
+	link_t trigger_edicts;
+	link_t solid_edicts;
 }
+areagrid_t;
 
+#define AREA_GRID 512
+#define AREA_GRIDNODES (AREA_GRID * AREA_GRID)
 
+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;
 
-/*
-================
-SV_HullForEntity
-
-Returns a hull that can be used for testing or clipping an object of mins/maxs
-size.
-Offset is filled in to contain the adjustment that must be added to the
-testing object's origin to get a point to use with the returned hull.
-================
-*/
-hull_t *SV_HullForEntity (edict_t *ent, vec3_t mins, vec3_t maxs, vec3_t offset)
+void SV_CreateAreaGrid (vec3_t mins, vec3_t maxs)
 {
-	model_t		*model;
-	vec3_t		size;
-	vec3_t		hullmins, hullmaxs;
-	hull_t		*hull;
-
-// decide which clipping hull to use, based on the size
-	if (ent->v.solid == SOLID_BSP)
-	{	// explicit hulls in the BSP model
-		if (ent->v.movetype != MOVETYPE_PUSH)
-			Host_Error ("SOLID_BSP without MOVETYPE_PUSH");
-
-		model = sv.models[ (int)ent->v.modelindex ];
-		Mod_CheckLoaded(model);
-
-		// LordHavoc: fixed SOLID_BSP error message
-		if (!model || model->type != mod_brush)
-		{
-			Con_Printf ("SOLID_BSP with a non bsp model, entity dump:\n");
-			ED_Print (ent);
-			Host_Error ("SOLID_BSP with a non bsp model\n");
-		}
-
-		VectorSubtract (maxs, mins, size);
-		// LordHavoc: FIXME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-		if (sv.worldmodel->ishlbsp)
-		{
-			if (size[0] < 3)
-				hull = &model->hulls[0]; // 0x0x0
-			else if (size[0] <= 32)
-			{
-				if (size[2] < 54) // pick the nearest of 36 or 72
-					hull = &model->hulls[3]; // 32x32x36
-				else
-					hull = &model->hulls[1]; // 32x32x72
-			}
-			else
-				hull = &model->hulls[2]; // 64x64x64
-		}
-		else
-		{
-			if (size[0] < 3)
-				hull = &model->hulls[0]; // 0x0x0
-			else if (size[0] <= 32)
-				hull = &model->hulls[1]; // 32x32x56
-			else
-				hull = &model->hulls[2]; // 64x64x88
-		}
-
-// calculate an offset value to center the origin
-		VectorSubtract (hull->clip_mins, mins, offset);
-		VectorAdd (offset, ent->v.origin, offset);
-	}
-	else
-	{	// create a temp hull from bounding box sizes
-
-		VectorSubtract (ent->v.mins, maxs, hullmins);
-		VectorSubtract (ent->v.maxs, mins, hullmaxs);
-		hull = SV_HullForBox (hullmins, hullmaxs);
-
-		VectorCopy (ent->v.origin, offset);
-	}
-
-
-	return hull;
-}
-
-/*
-===============================================================================
-
-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;
-
-/*
-===============
-SV_CreateAreaNode
-
-===============
-*/
-areanode_t *SV_CreateAreaNode (int depth, vec3_t mins, vec3_t maxs)
-{
-	areanode_t	*anode;
-	vec3_t		size;
-	vec3_t		mins1, maxs1, mins2, maxs2;
-
-	anode = &sv_areanodes[sv_numareanodes];
-	sv_numareanodes++;
-
-	ClearLink (&anode->trigger_edicts);
-	ClearLink (&anode->solid_edicts);
-
-	if (depth == AREA_DEPTH)
-	{
-		anode->axis = -1;
-		anode->children[0] = anode->children[1] = NULL;
-		return anode;
-	}
-
-	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;
+	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++)
+	{
+		ClearLink (&sv_areagrid[i].trigger_edicts);
+		ClearLink (&sv_areagrid[i].solid_edicts);
+	}
+	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);
 }
 
 /*
@@ -317,12 +163,8 @@ SV_ClearWorld
 */
 void SV_ClearWorld (void)
 {
-	SV_InitBoxHull ();
-
-	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);
 }
 
 
@@ -334,78 +176,118 @@ 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)
-	{
-		next = l->next;
-		touch = EDICT_FROM_AREA(l);
-		if (touch == ent)
+	link_t *l;
+	edict_t *touch;
+	areagrid_t *grid;
+	int old_self, old_other, igrid[3], igridmins[3], igridmaxs[3];
+	int i, numtouchedicts;
+	unsigned short touchedictnumbers[MAX_EDICTS];
+
+	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]);
+
+	// build a list of edicts to touch, because the link loop can be corrupted
+	// by SV_IncreaseEdicts called during touch functions
+	numtouchedicts = 0;
+	for (l = sv_areagrid_outside.trigger_edicts.next;l != &sv_areagrid_outside.trigger_edicts;l = l->next)
+		touchedictnumbers[numtouchedicts++] = l->entitynumber;
+
+	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 = l->next)
+				touchedictnumbers[numtouchedicts++] = l->entitynumber;
+	}
+
+	old_self = pr_global_struct->self;
+	old_other = pr_global_struct->other;
+	for (i = 0;i < numtouchedicts && !ent->e->free;i++)
+	{
+		touch = EDICT_NUM_UNSIGNED(touchedictnumbers[i]);
+		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;
-
 		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;
+		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)
+void SV_LinkEdict_AreaGrid(edict_t *ent)
+{
+	areagrid_t *grid;
+	int igrid[3], igridmins[3], igridmaxs[3], gridnum, entitynumber = NUM_FOR_EDICT(ent);
+
+	if (entitynumber <= 0 || entitynumber >= sv.max_edicts || EDICT_NUM(entitynumber) != ent)
+		Host_Error("SV_LinkEdict_AreaGrid: invalid edict %p (sv.edicts is %p, edict compared to sv.edicts is %i)\n", ent, sv.edicts, entitynumber);
+
+	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)
+	{
+		// 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, entitynumber);
+		else
+			InsertLinkBefore (&ent->e->areagrid[0], &sv_areagrid_outside.solid_edicts, entitynumber);
 		return;
-
-	// LordHavoc: optimized recursion
-//	if (ent->v.absmax[node->axis] > node->dist) SV_TouchLinks (ent, node->children[0]);
-//	if (ent->v.absmin[node->axis] < node->dist) SV_TouchLinks (ent, node->children[1]);
-	if (ent->v.absmax[node->axis] > node->dist)
-	{
-		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;
 	}
-	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, entitynumber);
+			else
+				InsertLinkBefore (&ent->e->areagrid[gridnum], &grid->solid_edicts, entitynumber);
 		}
 	}
 }
 
-
 /*
 ===============
 SV_LinkEdict
@@ -414,105 +296,96 @@ SV_LinkEdict
 */
 void SV_LinkEdict (edict_t *ent, qboolean touch_triggers)
 {
-	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
 
-// LordHavoc: enabling rotating bmodels
-	if (ent->v.solid == SOLID_BSP && (ent->v.angles[0] || ent->v.angles[1] || ent->v.angles[2]))
+	if (ent->v->solid == SOLID_BSP)
 	{
-		// expand for rotation
-		float		max, v;
-		int			i;
-
-		max = DotProduct(ent->v.mins, ent->v.mins);
-		v = DotProduct(ent->v.maxs, ent->v.maxs);
-		if (max < v)
-			max = v;
-		max = sqrt(max);
-		/*
-		max = 0;
-		for (i=0 ; i<3 ; i++)
+		int modelindex = ent->v->modelindex;
+		if (modelindex < 0 || modelindex > MAX_MODELS)
 		{
-			v = fabs(ent->v.mins[i]);
-			if (max < v)
-				max = v;
-			v = fabs(ent->v.maxs[i]);
-			if (max < v)
-				max = v;
+			Con_DPrintf("edict %i: SOLID_BSP with invalid modelindex!\n", NUM_FOR_EDICT(ent));
+			modelindex = 0;
 		}
-		*/
-		for (i=0 ; i<3 ; i++)
+		model = sv.models[modelindex];
+		if (model != NULL)
+		{
+			Mod_CheckLoaded(model);
+			if (!model->TraceBox)
+				Con_DPrintf("edict %i: SOLID_BSP with non-collidable model\n", NUM_FOR_EDICT(ent));
+
+			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);
+			}
+			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);
+			}
+			else
+			{
+				VectorAdd(ent->v->origin, model->normalmins, ent->v->absmin);
+				VectorAdd(ent->v->origin, model->normalmaxs, ent->v->absmax);
+			}
+		}
+		else
 		{
-			ent->v.absmin[i] = ent->v.origin[i] - max;
-			ent->v.absmax[i] = ent->v.origin[i] + max;
+			// 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);
 		}
 	}
 	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.absmax[0] += 15;
-		ent->v.absmax[1] += 15;
+		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);
 }
 
 
@@ -525,20 +398,6 @@ POINT TESTING IN HULLS
 ===============================================================================
 */
 
-/*
-==================
-SV_HullPointContents
-
-==================
-*/
-int SV_HullPointContents (hull_t *hull, int num, vec3_t p)
-{
-	while (num >= 0)
-		num = hull->clipnodes[num].children[(hull->planes[hull->clipnodes[num].planenum].type < 3 ? p[hull->planes[hull->clipnodes[num].planenum].type] : DotProduct (hull->planes[hull->clipnodes[num].planenum].normal, p)) < hull->planes[hull->clipnodes[num].planenum].dist];
-
-	return num;
-}
-
 /*
 ============
 SV_TestEntityPosition
@@ -546,16 +405,9 @@ SV_TestEntityPosition
 This could be a lot more efficient...
 ============
 */
-edict_t	*SV_TestEntityPosition (edict_t *ent)
+int SV_TestEntityPosition (edict_t *ent)
 {
-	trace_t	trace;
-
-	trace = SV_Move (ent->v.origin, ent->v.mins, ent->v.maxs, ent->v.origin, MOVE_NORMAL, ent);
-
-	if (trace.startsolid)
-		return sv.edicts;
-		
-	return NULL;
+	return SV_Move (ent->v->origin, ent->v->mins, ent->v->maxs, ent->v->origin, MOVE_NORMAL, ent).startsolid;
 }
 
 
@@ -567,654 +419,189 @@ LINE TESTING IN HULLS
 ===============================================================================
 */
 
-// 1/32 epsilon to keep floating point happy
-//#define	DIST_EPSILON	(0.03125)
-#define DIST_EPSILON (0.125)
-
-#define HULLCHECKSTATE_EMPTY 0
-#define HULLCHECKSTATE_SOLID 1
-#define HULLCHECKSTATE_DONE 2
-
-// LordHavoc: FIXME: this is not thread safe, if threading matters here, pass
-// this as a struct to RecursiveHullCheck, RecursiveHullCheck_Impact, etc...
-RecursiveHullCheckTraceInfo_t RecursiveHullCheckInfo;
-#define RHC RecursiveHullCheckInfo
+/*
+==================
+SV_ClipMoveToEntity
 
-void SV_RecursiveHullCheck_Impact (mplane_t *plane, int side)
+Handles selection or creation of a clipping hull, and offseting (and
+eventually rotation) of the end points
+==================
+*/
+trace_t SV_ClipMoveToEntity(edict_t *ent, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int movetype)
 {
-	// LordHavoc: using doubles for extra accuracy
-	double t1, t2, frac;
-
-	// LordHavoc: now that we have found the impact, recalculate the impact
-	// point from scratch for maximum accuracy, with an epsilon bias on the
-	// surface distance
-	frac = plane->dist;
-	if (side)
-	{
-		frac -= DIST_EPSILON;
-		VectorNegate (plane->normal, RHC.trace->plane.normal);
-		RHC.trace->plane.dist = -plane->dist;
-	}
-	else
-	{
-		frac += DIST_EPSILON;
-		VectorCopy (plane->normal, RHC.trace->plane.normal);
-		RHC.trace->plane.dist = plane->dist;
-	}
-
-	if (plane->type < 3)
-	{
-		t1 = RHC.start[plane->type] - frac;
-		t2 = RHC.start[plane->type] + RHC.dist[plane->type] - frac;
-	}
-	else
-	{
-		t1 = plane->normal[0] * RHC.start[0] + plane->normal[1] * RHC.start[1] + plane->normal[2] * RHC.start[2] - frac;
-		t2 = plane->normal[0] * (RHC.start[0] + RHC.dist[0]) + plane->normal[1] * (RHC.start[1] + RHC.dist[1]) + plane->normal[2] * (RHC.start[2] + RHC.dist[2]) - frac;
-	}
-
-	frac = t1 / (t1 - t2);
-	frac = bound(0.0f, frac, 1.0f);
+	trace_t trace;
+	model_t *model = NULL;
+	matrix4x4_t matrix, imatrix;
+	float tempnormal[3], starttransformed[3], endtransformed[3];
+	float starttransformedmins[3], starttransformedmaxs[3], endtransformedmins[3], endtransformedmaxs[3];
 
-	RHC.trace->fraction = frac;
-	RHC.trace->endpos[0] = RHC.start[0] + frac * RHC.dist[0];
-	RHC.trace->endpos[1] = RHC.start[1] + frac * RHC.dist[1];
-	RHC.trace->endpos[2] = RHC.start[2] + frac * RHC.dist[2];
-}
+	memset(&trace, 0, sizeof(trace));
+	trace.fraction = trace.realfraction = 1;
+	VectorCopy(end, trace.endpos);
 
-int SV_RecursiveHullCheck (int num, float p1f, float p2f, vec3_t p1, vec3_t p2)
-{
-	dclipnode_t	*node;
-	vec3_t		mid;
-	int			side;
-	float		midf;
-	// LordHavoc: FIXME: this is not thread safe...  if threading matters here,
-	// remove the static prefixes
-	static int ret;
-	static mplane_t *plane;
-	static float t1, t2, frac;
-
-	// LordHavoc: a goto!  everyone flee in terror... :)
-loc0:
-	// check for empty
-	if (num < 0)
+	if ((int) ent->v->solid == SOLID_BSP || movetype == MOVE_HITMODEL)
 	{
-		RHC.trace->endcontents = num;
-		if (RHC.trace->startcontents)
+		unsigned int modelindex = ent->v->modelindex;
+		// if the modelindex is 0, it shouldn't be SOLID_BSP!
+		if (modelindex == 0)
 		{
-			if (num == RHC.trace->startcontents)
-				RHC.trace->allsolid = false;
-			else
-			{
-				// if the first leaf is solid, set startsolid
-				if (RHC.trace->allsolid)
-					RHC.trace->startsolid = true;
-				return HULLCHECKSTATE_SOLID;
-			}
-			return HULLCHECKSTATE_EMPTY;
+			Con_DPrintf("SV_ClipMoveToEntity: edict %i: SOLID_BSP with no model\n", NUM_FOR_EDICT(ent));
+			return trace;
 		}
-		else
+		if (modelindex >= MAX_MODELS)
 		{
-			if (num != CONTENTS_SOLID)
-			{
-				RHC.trace->allsolid = false;
-				if (num == CONTENTS_EMPTY)
-					RHC.trace->inopen = true;
-				else
-					RHC.trace->inwater = true;
-			}
-			else
-			{
-				// if the first leaf is solid, set startsolid
-				if (RHC.trace->allsolid)
-					RHC.trace->startsolid = true;
-				return HULLCHECKSTATE_SOLID;
-			}
-			return HULLCHECKSTATE_EMPTY;
+			Con_DPrintf("SV_ClipMoveToEntity: edict %i: SOLID_BSP with invalid modelindex\n", NUM_FOR_EDICT(ent));
+			return trace;
 		}
-	}
-
-	// find the point distances
-	node = RHC.hull->clipnodes + num;
-
-	plane = RHC.hull->planes + node->planenum;
-	if (plane->type < 3)
-	{
-		t1 = p1[plane->type] - plane->dist;
-		t2 = p2[plane->type] - plane->dist;
-	}
-	else
-	{
-		t1 = DotProduct (plane->normal, p1) - plane->dist;
-		t2 = DotProduct (plane->normal, p2) - plane->dist;
-	}
-
-	// LordHavoc: rearranged the side/frac code
-	if (t1 >= 0)
-	{
-		if (t2 >= 0)
+		model = sv.models[modelindex];
+		if (modelindex != 0 && model == NULL)
 		{
-			num = node->children[0];
-			goto loc0;
+			Con_DPrintf("SV_ClipMoveToEntity: edict %i: SOLID_BSP with invalid modelindex\n", NUM_FOR_EDICT(ent));
+			return trace;
 		}
-		// put the crosspoint DIST_EPSILON pixels on the near side
-		side = 0;
-	}
-	else
-	{
-		if (t2 < 0)
-		{
-			num = node->children[1];
-			goto loc0;
-		}
-		// put the crosspoint DIST_EPSILON pixels on the near side
-		side = 1;
-	}
 
-	frac = t1 / (t1 - t2);
-	frac = bound(0.0f, frac, 1.0f);
-
-	midf = p1f + ((p2f - p1f) * frac);
-	mid[0] = RHC.start[0] + midf * RHC.dist[0];
-	mid[1] = RHC.start[1] + midf * RHC.dist[1];
-	mid[2] = RHC.start[2] + midf * RHC.dist[2];
-
-	// front side first
-	ret = SV_RecursiveHullCheck (node->children[side], p1f, midf, p1, mid);
-	if (ret != HULLCHECKSTATE_EMPTY)
-		return ret; // solid or done
-	ret = SV_RecursiveHullCheck (node->children[!side], midf, p2f, mid, p2);
-	if (ret != HULLCHECKSTATE_SOLID)
-		return ret; // empty or done
-
-	// front is air and back is solid, this is the impact point...
-	SV_RecursiveHullCheck_Impact(RHC.hull->planes + node->planenum, side);
-
-	return HULLCHECKSTATE_DONE;
-}
-
-/*
-qboolean SV_RecursiveHullCheckContentBoundary (hull_t *hull, int num, float p1f, float p2f, vec3_t p1, vec3_t p2, trace_t *trace)
-{
-	dclipnode_t	*node;
-	mplane_t	*plane;
-	float		t1, t2;
-	float		frac;
-	int			i;
-	vec3_t		mid;
-	int			side;
-	float		midf;
-
-	// LordHavoc: a goto!  everyone flee in terror... :)
-loc0:
-// check for empty
-	if (num < 0)
-	{
-		if (num != trace->startcontents)
-			trace->startsolid = true;
-		else
-			trace->allsolid = false;
-		return true;		// empty
-	}
-
-// find the point distances
-	node = hull->clipnodes + num;
-	plane = hull->planes + node->planenum;
-
-	if (plane->type < 3)
-	{
-		t1 = p1[plane->type] - plane->dist;
-		t2 = p2[plane->type] - plane->dist;
-	}
-	else
-	{
-		t1 = DotProduct (plane->normal, p1) - plane->dist;
-		t2 = DotProduct (plane->normal, p2) - plane->dist;
-	}
-
-	// LordHavoc: rearranged the side/frac code
-	// LordHavoc: recursion optimization
-	if (t1 >= 0)
-	{
-		if (t2 >= 0)
+		Mod_CheckLoaded(model);
+		if ((int) ent->v->solid == SOLID_BSP)
 		{
-			num = node->children[0];
-			goto loc0;
+			if (!model->TraceBox)
+			{
+				Con_DPrintf("SV_ClipMoveToEntity: edict %i: SOLID_BSP with a non-collidable model\n", NUM_FOR_EDICT(ent));
+				return trace;
+			}
+			//if (ent->v->movetype != MOVETYPE_PUSH)
+			//{
+			//	Con_DPrintf("SV_ClipMoveToEntity: edict %i: SOLID_BSP without MOVETYPE_PUSH\n", NUM_FOR_EDICT(ent));
+			//	return trace;
+			//}
 		}
-		// put the crosspoint DIST_EPSILON pixels on the near side
-		side = 0;
+		Matrix4x4_CreateFromQuakeEntity(&matrix, ent->v->origin[0], ent->v->origin[1], ent->v->origin[2], ent->v->angles[0], ent->v->angles[1], ent->v->angles[2], 1);
 	}
 	else
-	{
-		if (t2 < 0)
-		{
-			num = node->children[1];
-			goto loc0;
-		}
-		// put the crosspoint DIST_EPSILON pixels on the near side
-		side = 1;
-	}
-
-	frac = t1 / (t1 - t2);
-	frac = bound(0.0f, frac, 1.0f);
-
-	midf = p1f + ((p2f - p1f) * frac);
-	mid[0] = p1[0] + ((p2[0] - p1[0]) * frac);
-	mid[1] = p1[1] + ((p2[1] - p1[1]) * frac);
-	mid[2] = p1[2] + ((p2[2] - p1[2]) * frac);
-
-// move up to the node
-	if (!SV_RecursiveHullCheck (hull, node->children[side], p1f, midf, p1, mid, trace) )
-		return false;
+		Matrix4x4_CreateTranslate(&matrix, ent->v->origin[0], ent->v->origin[1], ent->v->origin[2]);
 
-*/
-	/*
-#ifdef PARANOID
-	if (SV_HullPointContents (pm_hullmodel, mid, node->children[side]) != trace->startcontents)
-	{
-		Con_Printf ("mid PointInHullSolid\n");
-		return false;
-	}
+	Matrix4x4_Invert_Simple(&imatrix, &matrix);
+	Matrix4x4_Transform(&imatrix, start, starttransformed);
+	Matrix4x4_Transform(&imatrix, end, endtransformed);
+#if COLLISIONPARANOID >= 3
+	Con_Printf("trans(%f %f %f -> %f %f %f, %f %f %f -> %f %f %f)", start[0], start[1], start[2], starttransformed[0], starttransformed[1], starttransformed[2], end[0], end[1], end[2], endtransformed[0], endtransformed[1], endtransformed[2]);
 #endif
-	*/
-/*
-
-	// LordHavoc: warning to the clumsy, this recursion can not be optimized because mid would need to be duplicated on a stack
-	if (SV_HullPointContents (hull, node->children[side^1], mid) == trace->startcontents)
-// go past the node
-		return SV_RecursiveHullCheck (hull, node->children[side^1], midf, p2f, mid, p2, trace);
-
-	if (trace->allsolid)
-		return false;		// never got out of the solid area
 
-//==================
-// the other side of the node is solid, this is the impact point
-//==================
-	if (!side)
+	if (model && model->TraceBox)
 	{
-		VectorCopy (plane->normal, trace->plane.normal);
-		trace->plane.dist = plane->dist;
+		int frame;
+		frame = (int)ent->v->frame;
+		frame = bound(0, frame, (model->numframes - 1));
+		VectorAdd(starttransformed, maxs, starttransformedmaxs);
+		VectorAdd(endtransformed, maxs, endtransformedmaxs);
+		VectorAdd(starttransformed, mins, starttransformedmins);
+		VectorAdd(endtransformed, mins, endtransformedmins);
+		model->TraceBox(model, frame, &trace, starttransformedmins, starttransformedmaxs, endtransformedmins, endtransformedmaxs, SUPERCONTENTS_SOLID);
 	}
 	else
-	{
-		VectorNegate (plane->normal, trace->plane.normal);
-		trace->plane.dist = -plane->dist;
-	}
+		Collision_ClipTrace_Box(&trace, ent->v->mins, ent->v->maxs, starttransformed, mins, maxs, endtransformed, SUPERCONTENTS_SOLID, SUPERCONTENTS_SOLID);
 
-*/
-	/*
-	while (SV_HullPointContents (hull, hull->firstclipnode, mid) != trace->startcontents)
+	if (trace.fraction < 1)
 	{
-		// shouldn't really happen, but does occasionally
-		frac -= 0.1;
-		if (frac < 0)
-		{
-			trace->fraction = midf;
-			VectorCopy (mid, trace->endpos);
-			Con_DPrintf ("backup past 0\n");
-			return false;
-		}
-		midf = p1f + (p2f - p1f)*frac;
-		mid[0] = p1[0] + frac*(p2[0] - p1[0]);
-		mid[1] = p1[1] + frac*(p2[1] - p1[1]);
-		mid[2] = p1[2] + frac*(p2[2] - p1[2]);
+		VectorLerp(start, trace.fraction, end, trace.endpos);
+		VectorCopy(trace.plane.normal, tempnormal);
+		Matrix4x4_Transform3x3(&matrix, tempnormal, trace.plane.normal);
+		// FIXME: should recalc trace.plane.dist
 	}
-	*/
-/*
-
-	frac = t1;
-	if (side)
-		frac += DIST_EPSILON;
 	else
-		frac -= DIST_EPSILON;
-
-	frac /= (t1 - t2);
-	frac = bound(0.0f, frac, 1.0f);
-
-	trace->fraction = p1f + (p2f - p1f)*frac;
-	trace->endpos[0] = p1[0] + frac*(p2[0] - p1[0]);
-	trace->endpos[1] = p1[1] + frac*(p2[1] - p1[1]);
-	trace->endpos[2] = p1[2] + frac*(p2[2] - p1[2]);
-
-	return false;
-}
-*/
-
-/*
-// FIXME: this is broken and I'm not interested in figuring out what is broken about it right now
-qboolean SV_TestLine (hull_t *hull, int num, vec3_t p1, vec3_t p2)
-{
-	dclipnode_t	*node;
-	mplane_t	*plane;
-	float		t1, t2, frac;
-	vec3_t		mid;
-	int			side;
-
-loc0:
-// check for empty
-	if (num < 0)
-		return num != CONTENTS_SOLID;
-
-	if (num < hull->firstclipnode || num > hull->lastclipnode)
-		Sys_Error ("SV_RecursiveHullCheck: bad node number");
-
-//
-// find the point distances
-//
-	node = hull->clipnodes + num;
-	if (node->children[0] < 0)
-	{
-		if (node->children[0] == CONTENTS_SOLID)
-			return false;
-		if (node->children[1] < 0)
-			return node->children[1] != CONTENTS_SOLID;
-	}
-	else if (node->children[1] == CONTENTS_SOLID)
-		return false;
-
-	plane = hull->planes + node->planenum;
-
-	if (plane->type < 3)
-	{
-		t1 = p1[plane->type] - plane->dist;
-		t2 = p2[plane->type] - plane->dist;
-	}
-	else
-	{
-		t1 = DotProduct (plane->normal, p1) - plane->dist;
-		t2 = DotProduct (plane->normal, p2) - plane->dist;
-	}
-
-	if (t1 >= 0)
-	{
-		if (t2 >= 0)
-		{
-			num = node->children[0];
-			goto loc0;
-		}
-		side = 0;
-	}
-	else
-	{
-		if (t2 < 0)
-		{
-			num = node->children[1];
-			goto loc0;
-		}
-		side = 1;
-	}
-
-	if (node->children[side] < 0)
-	{
-		if (node->children[side] == CONTENTS_SOLID)
-			return false;
-
-		if (node->children[!side] < 0)
-			return node->children[!side] != CONTENTS_SOLID;
-		else
-		{
-			frac = t1 / (t1 - t2);
-			frac = bound(0, frac, 1);
-
-			mid[0] = p1[0] + frac*(p2[0] - p1[0]);
-			mid[1] = p1[1] + frac*(p2[1] - p1[1]);
-			mid[2] = p1[2] + frac*(p2[2] - p1[2]);
-
-			return SV_TestLine(hull, node->children[!side], mid, p2);
-		}
-	}
-	else
-	{
-		if (node->children[!side] < 0)
-		{
-			if (node->children[!side] == CONTENTS_SOLID)
-				return false;
-
-			frac = t1 / (t1 - t2);
-			frac = bound(0, frac, 1);
-
-			mid[0] = p1[0] + frac*(p2[0] - p1[0]);
-			mid[1] = p1[1] + frac*(p2[1] - p1[1]);
-			mid[2] = p1[2] + frac*(p2[2] - p1[2]);
-
-			return SV_TestLine(hull, node->children[side], p1, mid);
-		}
-		else
-		{
-			frac = t1 / (t1 - t2);
-			frac = bound(0, frac, 1);
-
-			mid[0] = p1[0] + frac*(p2[0] - p1[0]);
-			mid[1] = p1[1] + frac*(p2[1] - p1[1]);
-			mid[2] = p1[2] + frac*(p2[2] - p1[2]);
-
-			if (SV_TestLine(hull, node->children[side], p1, mid))
-				return SV_TestLine(hull, node->children[!side], mid, p2);
-			else
-				return false;
-		}
-	}
-}
-*/
-
-
-/*
-==================
-SV_ClipMoveToEntity
-
-Handles selection or creation of a clipping hull, and offseting (and
-eventually rotation) of the end points
-==================
-*/
-trace_t SV_ClipMoveToEntity (edict_t *ent, vec3_t start, vec3_t mins, vec3_t maxs, vec3_t end)
-{
-	trace_t		trace;
-	vec3_t		offset;
-	vec3_t		start_l, end_l;
-	hull_t		*hull;
-
-// fill in a default trace
-	memset (&trace, 0, sizeof(trace_t));
-	trace.fraction = 1;
-	trace.allsolid = true;
-	VectorCopy (end, trace.endpos);
-
-// get the clipping hull
-	hull = SV_HullForEntity (ent, mins, maxs, offset);
-
-	VectorSubtract (start, offset, start_l);
-	VectorSubtract (end, offset, end_l);
-
-// LordHavoc: enabling rotating bmodels
-	// rotate start and end into the models frame of reference
-	if (ent->v.solid == SOLID_BSP && (ent->v.angles[0] || ent->v.angles[1] || ent->v.angles[2]))
-	{
-		vec3_t	forward, right, up;
-		vec3_t	temp;
-
-		AngleVectors (ent->v.angles, forward, right, up);
-
-		VectorCopy (start_l, temp);
-		start_l[0] = DotProduct (temp, forward);
-		start_l[1] = -DotProduct (temp, right);
-		start_l[2] = DotProduct (temp, up);
-
-		VectorCopy (end_l, temp);
-		end_l[0] = DotProduct (temp, forward);
-		end_l[1] = -DotProduct (temp, right);
-		end_l[2] = DotProduct (temp, up);
-	}
-
-// trace a line through the appropriate clipping hull
-	VectorCopy(start_l, RecursiveHullCheckInfo.start);
-	VectorSubtract(end_l, start_l, RecursiveHullCheckInfo.dist);
-	RecursiveHullCheckInfo.hull = hull;
-	RecursiveHullCheckInfo.trace = &trace;
-	SV_RecursiveHullCheck (hull->firstclipnode, 0, 1, start_l, end_l);
-
-// LordHavoc: enabling rotating bmodels
-	// rotate endpos back to world frame of reference
-	if (ent->v.solid == SOLID_BSP && (ent->v.angles[0] || ent->v.angles[1] || ent->v.angles[2]))
-	{
-		vec3_t	a;
-		vec3_t	forward, right, up;
-		vec3_t	temp;
-
-		if (trace.fraction != 1)
-		{
-			VectorNegate (ent->v.angles, a);
-			AngleVectors (a, forward, right, up);
-
-			VectorCopy (trace.endpos, temp);
-			trace.endpos[0] = DotProduct (temp, forward);
-			trace.endpos[1] = -DotProduct (temp, right);
-			trace.endpos[2] = DotProduct (temp, up);
-
-			VectorCopy (trace.plane.normal, temp);
-			trace.plane.normal[0] = DotProduct (temp, forward);
-			trace.plane.normal[1] = -DotProduct (temp, right);
-			trace.plane.normal[2] = DotProduct (temp, up);
-		}
-	}
-
-// fix trace up by the offset
-	if (trace.fraction != 1)
-		VectorAdd (trace.endpos, offset, trace.endpos);
-
-// did we clip the move?
-	if (trace.fraction < 1 || trace.startsolid  )
-		trace.ent = ent;
+		VectorCopy(end, trace.endpos);
 
 	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:
-// 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)
-			continue;
-		if (touch->v.solid == SOLID_TRIGGER)
-			Sys_Error ("Trigger in clipping list");
+		touch->e->areagridmarknumber = sv_areagrid_marknumber;
+		sv_areagrid_stats_entitychecks++;
 
-		if (clip->type == MOVE_NOMONSTERS && touch->v.solid != SOLID_BSP)
+		// LordHavoc: this box comparison isn't much use with the high resolution areagrid
+		/*
+		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 (clip->boxmins[0] > touch->v.absmax[0]
-		 || clip->boxmins[1] > touch->v.absmax[1]
-		 || clip->boxmins[2] > touch->v.absmax[2]
-		 || clip->boxmaxs[0] < touch->v.absmin[0]
-		 || clip->boxmaxs[1] < touch->v.absmin[1]
-		 || clip->boxmaxs[2] < touch->v.absmin[2])
+		if (clip->type == MOVE_NOMONSTERS && touch->v->solid != SOLID_BSP)
 			continue;
 
-		if (clip->passedict != NULL && clip->passedict->v.size[0] && !touch->v.size[0])
-			continue;	// points never interact
+		if (touch->v->solid == SOLID_NOT)
+			continue;
 
-	// might intersect, so do an exact clip
-		if (clip->trace.allsolid)
-			return;
 		if (clip->passedict)
 		{
-		 	if (PROG_TO_EDICT(touch->v.owner) == clip->passedict)
+			if (touch == clip->passedict)
+				continue;
+			if (!clip->passedict->v->size[0] && !touch->v->size[0])
+				continue;	// points never interact
+			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)
+			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 ((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);
-		if (trace.allsolid || trace.startsolid || trace.fraction < clip->trace.fraction)
+		if (touch->v->solid == SOLID_TRIGGER)
 		{
-			trace.ent = touch;
-		 	if (clip->trace.startsolid)
-			{
-				clip->trace = trace;
-				clip->trace.startsolid = true;
-			}
-			else
-				clip->trace = trace;
+			ED_Print(touch);
+			Host_Error ("Trigger in clipping list");
 		}
-		else if (trace.startsolid)
-			clip->trace.startsolid = true;
-	}
-
-// recurse down both sides
-	if (node->axis == -1)
-		return;
-
-	// LordHavoc: optimized recursion
-//	if (clip->boxmaxs[node->axis] > node->dist) SV_ClipToLinks(node->children[0], clip);
-//	if (clip->boxmins[node->axis] < node->dist) SV_ClipToLinks(node->children[1], clip);
-	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_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] = -9999;
-boxmaxs[0] = boxmaxs[1] = boxmaxs[2] = 9999;
-#else
-	int		i;
-	
-	for (i=0 ; i<3 ; i++)
-	{
-		if (end[i] > start[i])
+		// 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, clip->type);
+		else
+			trace = SV_ClipMoveToEntity(touch, clip->start, clip->mins, clip->maxs, clip->end, clip->type);
+		// LordHavoc: take the 'best' answers from the new trace and combine with existing data
+		if (trace.allsolid)
+			clip->trace.allsolid = true;
+		if (trace.startsolid)
 		{
-			boxmins[i] = start[i] + mins[i] - 1;
-			boxmaxs[i] = end[i] + maxs[i] + 1;
+			clip->trace.startsolid = true;
+			if (clip->trace.realfraction == 1)
+				clip->trace.ent = touch;
 		}
-		else
+		// don't set this except on the world, because it can easily confuse
+		// monsters underwater if there's a bmodel involved in the trace
+		// (inopen && inwater is how they check water visibility)
+		//if (trace.inopen)
+		//	clip->trace.inopen = true;
+		if (trace.inwater)
+			clip->trace.inwater = true;
+		if (trace.realfraction < clip->trace.realfraction)
 		{
-			boxmins[i] = end[i] + mins[i] - 1;
-			boxmaxs[i] = start[i] + maxs[i] + 1;
+			clip->trace.fraction = trace.fraction;
+			clip->trace.realfraction = trace.realfraction;
+			VectorCopy(trace.endpos, clip->trace.endpos);
+			clip->trace.plane = trace.plane;
+			clip->trace.ent = touch;
 		}
+		clip->trace.startsupercontents |= trace.startsupercontents;
 	}
-#endif
 }
 
 /*
@@ -1222,42 +609,130 @@ boxmaxs[0] = boxmaxs[1] = boxmaxs[2] = 9999;
 SV_Move
 ==================
 */
-trace_t SV_Move (vec3_t start, vec3_t mins, vec3_t maxs, vec3_t end, int type, edict_t *passedict)
+#if COLLISIONPARANOID >= 1
+trace_t SV_Move_(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, edict_t *passedict)
+#else
+trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, edict_t *passedict)
+#endif
 {
-	moveclip_t	clip;
-	int			i;
-
-	memset ( &clip, 0, sizeof ( moveclip_t ) );
-
-// clip to world
-	clip.trace = SV_ClipMoveToEntity ( sv.edicts, start, mins, maxs, end );
-
-	clip.start = start;
-	clip.end = end;
-	clip.mins = mins;
-	clip.maxs = maxs;
+	moveclip_t clip;
+	vec3_t hullmins, hullmaxs;
+	areagrid_t *grid;
+	int i, igrid[3], igridmins[3], igridmaxs[3];
+
+	// if the passedict is world, make it NULL (to avoid two checks each time)
+	if (passedict == sv.edicts)
+		passedict = NULL;
+
+	memset(&clip, 0, sizeof(moveclip_t));
+
+	VectorCopy(start, clip.start);
+	VectorCopy(end, clip.end);
+	VectorCopy(mins, clip.mins);
+	VectorCopy(maxs, clip.maxs);
+	VectorCopy(mins, clip.mins2);
+	VectorCopy(maxs, clip.maxs2);
 	clip.type = type;
 	clip.passedict = passedict;
+#if COLLISIONPARANOID >= 3
+	Con_Printf("move(%f %f %f,%f %f %f)", clip.start[0], clip.start[1], clip.start[2], clip.end[0], clip.end[1], clip.end[2]);
+#endif
+
+	// clip to world
+	clip.trace = SV_ClipMoveToEntity(sv.edicts, clip.start, clip.mins, clip.maxs, clip.end, clip.type);
+	if (clip.trace.startsolid || clip.trace.fraction < 1)
+		clip.trace.ent = sv.edicts;
+	if (clip.type == MOVE_WORLDONLY)
+		return clip.trace;
 
-	if (type == MOVE_MISSILE)
+	if (clip.type == MOVE_MISSILE)
 	{
-		for (i=0 ; i<3 ; i++)
+		// LordHavoc: modified this, was = -15, now -= 15
+		for (i = 0;i < 3;i++)
 		{
-			clip.mins2[i] = -15;
-			clip.maxs2[i] = 15;
+			clip.mins2[i] -= 15;
+			clip.maxs2[i] += 15;
 		}
 	}
+
+	// get adjusted box for bmodel collisions if the world is q1bsp or hlbsp
+	if (sv.worldmodel && sv.worldmodel->brush.RoundUpToHullSize)
+		sv.worldmodel->brush.RoundUpToHullSize(sv.worldmodel, clip.mins, clip.maxs, hullmins, hullmaxs);
 	else
 	{
-		VectorCopy (mins, clip.mins2);
-		VectorCopy (maxs, clip.maxs2);
+		VectorCopy(clip.mins, hullmins);
+		VectorCopy(clip.maxs, hullmaxs);
+	}
+
+	// create the bounding box of the entire move
+	for (i = 0;i < 3;i++)
+	{
+		clip.boxmins[i] = min(clip.start[i], clip.trace.endpos[i]) + min(hullmins[i], clip.mins2[i]) - 1;
+		clip.boxmaxs[i] = max(clip.start[i], clip.trace.endpos[i]) + max(hullmaxs[i], clip.maxs2[i]) + 1;
+	}
+
+	// debug override to test against everything
+	if (sv_debugmove.integer)
+	{
+		clip.boxmins[0] = clip.boxmins[1] = clip.boxmins[2] = -999999999;
+		clip.boxmaxs[0] = clip.boxmaxs[1] = clip.boxmaxs[2] =  999999999;
 	}
 
-// create the bounding box of the entire move
-	SV_MoveBounds ( start, clip.mins2, clip.maxs2, end, clip.boxmins, clip.boxmaxs );
+	// clip to enttiies
+	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);
 
-// clip to entities
-	SV_ClipToLinks ( sv_areanodes, &clip );
+	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);
 
 	return clip.trace;
 }
+
+#if COLLISIONPARANOID >= 1
+trace_t SV_Move(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int type, edict_t *passedict)
+{
+	int endstuck;
+	trace_t trace;
+	vec3_t temp;
+	trace = SV_Move_(start, mins, maxs, end, type, passedict);
+	if (passedict)
+	{
+		VectorCopy(trace.endpos, temp);
+		endstuck = SV_Move_(temp, mins, maxs, temp, type, passedict).startsolid;
+#if COLLISIONPARANOID < 3
+		if (trace.startsolid || endstuck)
+#endif
+			Con_Printf("%s{e%i:%f %f %f:%f %f %f:%f:%f %f %f%s%s}\n", (trace.startsolid || endstuck) ? "\002" : "", passedict ? passedict - sv.edicts : -1, passedict->v->origin[0], passedict->v->origin[1], passedict->v->origin[2], end[0] - passedict->v->origin[0], end[1] - passedict->v->origin[1], end[2] - passedict->v->origin[2], trace.fraction, trace.endpos[0] - passedict->v->origin[0], trace.endpos[1] - passedict->v->origin[1], trace.endpos[2] - passedict->v->origin[2], trace.startsolid ? " startstuck" : "", endstuck ? " endstuck" : "");
+	}
+	return trace;
+}
+#endif
+
+int SV_PointSuperContents(const vec3_t point)
+{
+	return SV_Move(point, vec3_origin, vec3_origin, point, sv_gameplayfix_swiminbmodels.integer ? MOVE_NOMONSTERS : MOVE_WORLDONLY, NULL).startsupercontents;
+}
+
+int SV_PointQ1Contents(const vec3_t point)
+{
+	return Mod_Q1BSP_NativeContentsFromSuperContents(NULL, SV_PointSuperContents(point));
+}
+
+