]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - collision.c
patch from div0 that fixes rate limiting code to make use of sv_maxrate (as it was...
[xonotic/darkplaces.git] / collision.c
index 32d53958a65ff8302b47cda94befa4f776c03a13..120809642e03ec90c96e75db75b27401c8107114 100644 (file)
@@ -2,8 +2,10 @@
 #include "quakedef.h"
 #include "polygon.h"
 
-#define COLLISION_SNAPSCALE (8.0f)
+#define COLLISION_SNAPSCALE (32.0f)
 #define COLLISION_SNAP (1.0f / COLLISION_SNAPSCALE)
+#define COLLISION_SNAP2 (2.0f / COLLISION_SNAPSCALE)
+#define COLLISION_PLANE_DIST_EPSILON (2.0f / COLLISION_SNAPSCALE)
 
 cvar_t collision_impactnudge = {0, "collision_impactnudge", "0.03125", "how much to back off from the impact"};
 cvar_t collision_startnudge = {0, "collision_startnudge", "0", "how much to bias collision trace start"};
@@ -76,12 +78,12 @@ void Collision_ValidateBrush(colbrushf_t *brush)
                        for (k = 0;k < brush->numplanes;k++)
                        {
                                d = DotProduct(brush->points[j].v, brush->planes[k].normal) - brush->planes[k].dist;
-                               if (d > (1.0f / 8.0f))
+                               if (d > COLLISION_PLANE_DIST_EPSILON)
                                {
                                        Con_Printf("Collision_ValidateBrush: point #%i (%f %f %f) infront of plane #%i (%f %f %f %f)\n", j, brush->points[j].v[0], brush->points[j].v[1], brush->points[j].v[2], k, brush->planes[k].normal[0], brush->planes[k].normal[1], brush->planes[k].normal[2], brush->planes[k].dist);
                                        printbrush = true;
                                }
-                               if (fabs(d) > 0.125f)
+                               if (fabs(d) > COLLISION_PLANE_DIST_EPSILON)
                                        pointsoffplanes++;
                                else
                                        pointonplanes++;
@@ -133,10 +135,12 @@ float furthestplanedist_float(const float *normal, const colpointf_t *points, in
 }
 
 
-colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalplanes, const mplane_t *originalplanes, int supercontents)
+colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalplanes, const colplanef_t *originalplanes, int supercontents)
 {
+       // TODO: planesbuf could be replaced by a remapping table
        int j, k, m, w;
        int numpointsbuf = 0, maxpointsbuf = 256, numplanesbuf = 0, maxplanesbuf = 256, numelementsbuf = 0, maxelementsbuf = 256;
+       double maxdist;
        colbrushf_t *brush;
        colpointf_t pointsbuf[256];
        colplanef_t planesbuf[256];
@@ -153,6 +157,12 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla
        memset(polypointbuf, 0, sizeof(polypointbuf));
        memset(p, 0, sizeof(p));
 #endif
+       // figure out how large a bounding box we need to properly compute this brush
+       maxdist = 0;
+       for (j = 0;j < numoriginalplanes;j++)
+               maxdist = max(maxdist, originalplanes[j].dist);
+       // now make it large enough to enclose the entire brush, and round it off to a reasonable multiple of 1024
+       maxdist = floor(maxdist * (4.0 / 1024.0) + 1) * 1024.0;
        // construct a collision brush (points, planes, and renderable mesh) from
        // a set of planes, this also optimizes out any unnecessary planes (ones
        // whose polygon is clipped away by the other planes)
@@ -174,16 +184,18 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla
 
                // create a large polygon from the plane
                w = 0;
-               PolygonD_QuadForPlane(p[w], originalplanes[j].normal[0], originalplanes[j].normal[1], originalplanes[j].normal[2], originalplanes[j].dist, 1024.0*1024.0*1024.0);
+               PolygonD_QuadForPlane(p[w], originalplanes[j].normal[0], originalplanes[j].normal[1], originalplanes[j].normal[2], originalplanes[j].dist, maxdist);
                pnumpoints = 4;
                // clip it by all other planes
                for (k = 0;k < numoriginalplanes && pnumpoints && pnumpoints <= pmaxpoints;k++)
                {
+                       // skip the plane this polygon
+                       // (nothing happens if it is processed, this is just an optimization)
                        if (k != j)
                        {
                                // we want to keep the inside of the brush plane so we flip
                                // the cutting plane
-                               PolygonD_Divide(pnumpoints, p[w], -originalplanes[k].normal[0], -originalplanes[k].normal[1], -originalplanes[k].normal[2], -originalplanes[k].dist, 1.0/32.0, pmaxpoints, p[!w], &pnumpoints, 0, NULL, NULL);
+                               PolygonD_Divide(pnumpoints, p[w], -originalplanes[k].normal[0], -originalplanes[k].normal[1], -originalplanes[k].normal[2], -originalplanes[k].dist, COLLISION_PLANE_DIST_EPSILON, pmaxpoints, p[!w], &pnumpoints, 0, NULL, NULL, NULL);
                                w = !w;
                        }
                }
@@ -199,7 +211,7 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla
                        int l, m;
                        m = 0;
                        for (l = 0;l < numoriginalplanes;l++)
-                               if (fabs(DotProduct(&p[w][k*3], originalplanes[l].normal) - originalplanes[l].dist) < 1.0/8.0)
+                               if (fabs(DotProduct(&p[w][k*3], originalplanes[l].normal) - originalplanes[l].dist) < COLLISION_PLANE_DIST_EPSILON)
                                        m++;
                        if (m < 3)
                                break;
@@ -228,7 +240,7 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla
                {
                        // check if there is already a matching point (no duplicates)
                        for (m = 0;m < numpointsbuf;m++)
-                               if (VectorDistance2(&p[w][k*3], pointsbuf[m].v) < COLLISION_SNAP)
+                               if (VectorDistance2(&p[w][k*3], pointsbuf[m].v) < COLLISION_SNAP2)
                                        break;
 
                        // if there is no match, add a new one
@@ -261,6 +273,8 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla
                // add the new plane
                VectorCopy(originalplanes[j].normal, planesbuf[numplanesbuf].normal);
                planesbuf[numplanesbuf].dist = originalplanes[j].dist;
+               planesbuf[numplanesbuf].q3surfaceflags = originalplanes[j].q3surfaceflags;
+               planesbuf[numplanesbuf].texture = originalplanes[j].texture;
                numplanesbuf++;
        }
 
@@ -268,7 +282,7 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla
        for (j = 0;j < numplanesbuf;j++)
        {
                float d = furthestplanedist_float(planesbuf[j].normal, pointsbuf, numpointsbuf);
-               if (fabs(planesbuf[j].dist - d) > (1.0f/32.0f))
+               if (fabs(planesbuf[j].dist - d) > COLLISION_PLANE_DIST_EPSILON)
                        Con_Printf("plane %f %f %f %f mismatches dist %f\n", planesbuf[j].normal[0], planesbuf[j].normal[1], planesbuf[j].normal[2], planesbuf[j].dist, d);
        }
 
@@ -280,7 +294,14 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla
        }
 
        // allocate the brush and copy to it
-       brush = Collision_AllocBrushFloat(mempool, numpointsbuf, numplanesbuf, numelementsbuf / 3, supercontents);
+       brush = (colbrushf_t *)Mem_Alloc(mempool, sizeof(colbrushf_t) + sizeof(colpointf_t) * numpointsbuf + sizeof(colplanef_t) * numplanesbuf + sizeof(int) * numelementsbuf);
+       brush->supercontents = supercontents;
+       brush->numplanes = numplanesbuf;
+       brush->numpoints = numpointsbuf;
+       brush->numtriangles = numelementsbuf / 3;
+       brush->planes = (colplanef_t *)(brush + 1);
+       brush->points = (colpointf_t *)(brush->planes + brush->numplanes);
+       brush->elements = (int *)(brush->points + brush->numpoints);
        for (j = 0;j < brush->numpoints;j++)
        {
                brush->points[j].v[0] = pointsbuf[j].v[0];
@@ -293,6 +314,8 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla
                brush->planes[j].normal[1] = planesbuf[j].normal[1];
                brush->planes[j].normal[2] = planesbuf[j].normal[2];
                brush->planes[j].dist = planesbuf[j].dist;
+               brush->planes[j].q3surfaceflags = planesbuf[j].q3surfaceflags;
+               brush->planes[j].texture = planesbuf[j].texture;
        }
        for (j = 0;j < brush->numtriangles * 3;j++)
                brush->elements[j] = elementsbuf[j];
@@ -319,20 +342,6 @@ colbrushf_t *Collision_NewBrushFromPlanes(mempool_t *mempool, int numoriginalpla
 
 
 
-colbrushf_t *Collision_AllocBrushFloat(mempool_t *mempool, int numpoints, int numplanes, int numtriangles, int supercontents)
-{
-       colbrushf_t *brush;
-       brush = (colbrushf_t *)Mem_Alloc(mempool, sizeof(colbrushf_t) + sizeof(colpointf_t) * numpoints + sizeof(colplanef_t) * numplanes + sizeof(int[3]) * numtriangles);
-       brush->supercontents = supercontents;
-       brush->numplanes = numplanes;
-       brush->numpoints = numpoints;
-       brush->numtriangles = numtriangles;
-       brush->planes = (colplanef_t *)(brush + 1);
-       brush->points = (colpointf_t *)(brush->planes + brush->numplanes);
-       brush->elements = (int *)(brush->points + brush->numpoints);
-       return brush;
-}
-
 void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush)
 {
        int i;
@@ -403,7 +412,7 @@ void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush)
                        brush->planes[3].dist = DotProduct(brush->points[0].v, brush->planes[3].normal);
                        brush->planes[4].dist = DotProduct(brush->points[1].v, brush->planes[4].normal);
 
-                       if (developer.integer)
+                       if (developer.integer >= 100)
                        {
                                // validation code
 #if 0
@@ -488,7 +497,7 @@ void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush)
                }
        }
 
-       if (developer.integer)
+       if (developer.integer >= 100)
        {
                // validity check - will be disabled later
                Collision_ValidateBrush(brush);
@@ -496,7 +505,7 @@ void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush)
                {
                        int j;
                        for (j = 0, p = brush->points;j < brush->numpoints;j++, p++)
-                               if (DotProduct(p->v, brush->planes[i].normal) > brush->planes[i].dist + (1.0 / 32.0))
+                               if (DotProduct(p->v, brush->planes[i].normal) > brush->planes[i].dist + COLLISION_PLANE_DIST_EPSILON)
                                        Con_Printf("Error in brush plane generation, plane %i\n", i);
                }
        }
@@ -518,16 +527,12 @@ colbrushf_t *Collision_AllocBrushFromPermanentPolygonFloat(mempool_t *mempool, i
 // NOTE: start and end of each brush pair must have same numplanes/numpoints
 void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, const colbrushf_t *thatbrush_start, const colbrushf_t *thatbrush_end)
 {
-       int nplane, nplane2, fstartsolid, fendsolid, brushsolid;
-       float enterfrac, leavefrac, d1, d2, f, imove, newimpactnormal[3], enterfrac2;
+       int nplane, nplane2, fstartsolid = true, fendsolid = true, brushsolid, hitq3surfaceflags = 0;
+       float enterfrac = -1, leavefrac = 1, d1, d2, f, imove, newimpactnormal[3], enterfrac2 = -1;
        const colplanef_t *startplane, *endplane;
+       texture_t *hittexture = NULL;
 
        VectorClear(newimpactnormal);
-       enterfrac = -1;
-       enterfrac2 = -1;
-       leavefrac = 1;
-       fstartsolid = true;
-       fendsolid = true;
 
        for (nplane = 0;nplane < thatbrush_start->numplanes + thisbrush_start->numplanes;nplane++)
        {
@@ -537,7 +542,7 @@ void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush
                        nplane2 -= thatbrush_start->numplanes;
                        startplane = thisbrush_start->planes + nplane2;
                        endplane = thisbrush_end->planes + nplane2;
-                       if (developer.integer)
+                       if (developer.integer >= 100)
                        {
                                // any brush with degenerate planes is not worth handling
                                if (DotProduct(startplane->normal, startplane->normal) < 0.9f || DotProduct(endplane->normal, endplane->normal) < 0.9f)
@@ -546,7 +551,7 @@ void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush
                                        return;
                                }
                                f = furthestplanedist_float(startplane->normal, thisbrush_start->points, thisbrush_start->numpoints);
-                               if (fabs(f - startplane->dist) > 0.125f)
+                               if (fabs(f - startplane->dist) > COLLISION_PLANE_DIST_EPSILON)
                                        Con_Printf("startplane->dist %f != calculated %f (thisbrush_start)\n", startplane->dist, f);
                        }
                        d1 = nearestplanedist_float(startplane->normal, thisbrush_start->points, thisbrush_start->numpoints) - furthestplanedist_float(startplane->normal, thatbrush_start->points, thatbrush_start->numpoints) - collision_startnudge.value;
@@ -556,7 +561,7 @@ void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush
                {
                        startplane = thatbrush_start->planes + nplane2;
                        endplane = thatbrush_end->planes + nplane2;
-                       if (developer.integer)
+                       if (developer.integer >= 100)
                        {
                                // any brush with degenerate planes is not worth handling
                                if (DotProduct(startplane->normal, startplane->normal) < 0.9f || DotProduct(endplane->normal, endplane->normal) < 0.9f)
@@ -565,7 +570,7 @@ void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush
                                        return;
                                }
                                f = furthestplanedist_float(startplane->normal, thatbrush_start->points, thatbrush_start->numpoints);
-                               if (fabs(f - startplane->dist) > 0.125f)
+                               if (fabs(f - startplane->dist) > COLLISION_PLANE_DIST_EPSILON)
                                        Con_Printf("startplane->dist %f != calculated %f (thatbrush_start)\n", startplane->dist, f);
                        }
                        d1 = nearestplanedist_float(startplane->normal, thisbrush_start->points, thisbrush_start->numpoints) - startplane->dist - collision_startnudge.value;
@@ -589,6 +594,8 @@ void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush
                                        enterfrac = f;
                                        enterfrac2 = f - collision_impactnudge.value * imove;
                                        VectorLerp(startplane->normal, enterfrac, endplane->normal, newimpactnormal);
+                                       hitq3surfaceflags = startplane->q3surfaceflags;
+                                       hittexture = startplane->texture;
                                }
                        }
                }
@@ -641,6 +648,9 @@ void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush
                        if (enterfrac < trace->realfraction)
                        {
                                enterfrac2 = enterfrac - collision_impactnudge.value * imove;
+                               trace->hitsupercontents = thatbrush_start->supercontents;
+                               trace->hitq3surfaceflags = thatbrush_start->planes[0].q3surfaceflags;
+                               trace->hittexture = thatbrush_start->planes[0].texture;
                                trace->realfraction = bound(0, enterfrac, 1);
                                trace->fraction = bound(0, enterfrac2, 1);
                                VectorLerp(thatbrush_start->planes[0].normal, enterfrac, thatbrush_end->planes[0].normal, trace->plane.normal);
@@ -649,6 +659,9 @@ void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush
                else
 #endif
                {
+                       trace->hitsupercontents = thatbrush_start->supercontents;
+                       trace->hitq3surfaceflags = hitq3surfaceflags;
+                       trace->hittexture = hittexture;
                        trace->realfraction = bound(0, enterfrac, 1);
                        trace->fraction = bound(0, enterfrac2, 1);
                        VectorCopy(newimpactnormal, trace->plane.normal);
@@ -659,16 +672,12 @@ void Collision_TraceBrushBrushFloat(trace_t *trace, const colbrushf_t *thisbrush
 // NOTE: start and end brush pair must have same numplanes/numpoints
 void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, const colbrushf_t *thatbrush_start, const colbrushf_t *thatbrush_end)
 {
-       int nplane, fstartsolid, fendsolid, brushsolid;
-       float enterfrac, leavefrac, d1, d2, f, imove, newimpactnormal[3], enterfrac2;
+       int nplane, fstartsolid = true, fendsolid = true, brushsolid, hitq3surfaceflags = 0;
+       float enterfrac = -1, leavefrac = 1, d1, d2, f, imove, newimpactnormal[3], enterfrac2 = -1;
        const colplanef_t *startplane, *endplane;
+       texture_t *hittexture = NULL;
 
        VectorClear(newimpactnormal);
-       enterfrac = -1;
-       enterfrac2 = -1;
-       leavefrac = 1;
-       fstartsolid = true;
-       fendsolid = true;
 
        for (nplane = 0;nplane < thatbrush_start->numplanes;nplane++)
        {
@@ -676,7 +685,7 @@ void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const
                endplane = thatbrush_end->planes + nplane;
                d1 = DotProduct(startplane->normal, linestart) - startplane->dist - collision_startnudge.value;
                d2 = DotProduct(endplane->normal, lineend) - endplane->dist - collision_endnudge.value;
-               if (developer.integer)
+               if (developer.integer >= 100)
                {
                        // any brush with degenerate planes is not worth handling
                        if (DotProduct(startplane->normal, startplane->normal) < 0.9f || DotProduct(endplane->normal, endplane->normal) < 0.9f)
@@ -687,7 +696,7 @@ void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const
                        if (thatbrush_start->numpoints)
                        {
                                f = furthestplanedist_float(startplane->normal, thatbrush_start->points, thatbrush_start->numpoints);
-                               if (fabs(f - startplane->dist) > 0.125f)
+                               if (fabs(f - startplane->dist) > COLLISION_PLANE_DIST_EPSILON)
                                        Con_Printf("startplane->dist %f != calculated %f\n", startplane->dist, f);
                        }
                }
@@ -708,6 +717,8 @@ void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const
                                        enterfrac = f;
                                        enterfrac2 = f - collision_impactnudge.value * imove;
                                        VectorLerp(startplane->normal, enterfrac, endplane->normal, newimpactnormal);
+                                       hitq3surfaceflags = startplane->q3surfaceflags;
+                                       hittexture = startplane->texture;
                                }
                        }
                }
@@ -743,7 +754,7 @@ void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const
        // penetrating line segment is normally zero length if this brush was
        // generated from a polygon (infinitely thin), and could even be slightly
        // positive or negative due to rounding errors in that case.
-       if (brushsolid && enterfrac > -1 && enterfrac < trace->realfraction && enterfrac - (1.0f / 1024.0f) <= leavefrac)
+       if (brushsolid && enterfrac > -1 && enterfrac < trace->realfraction && enterfrac <= leavefrac)
        {
 #if 0
                // broken
@@ -760,6 +771,9 @@ void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const
                        if (enterfrac < trace->realfraction)
                        {
                                enterfrac2 = enterfrac - collision_impactnudge.value * imove;
+                               trace->hitsupercontents = thatbrush_start->supercontents;
+                               trace->hitq3surfaceflags = hitq3surfaceflags;
+                               trace->hittexture = hittexture;
                                trace->realfraction = bound(0, enterfrac, 1);
                                trace->fraction = bound(0, enterfrac2, 1);
                                VectorLerp(thatbrush_start->planes[0].normal, enterfrac, thatbrush_end->planes[0].normal, trace->plane.normal);
@@ -768,6 +782,9 @@ void Collision_TraceLineBrushFloat(trace_t *trace, const vec3_t linestart, const
                else
 #endif
                {
+                       trace->hitsupercontents = thatbrush_start->supercontents;
+                       trace->hitq3surfaceflags = hitq3surfaceflags;
+                       trace->hittexture = hittexture;
                        trace->realfraction = bound(0, enterfrac, 1);
                        trace->fraction = bound(0, enterfrac2, 1);
                        VectorCopy(newimpactnormal, trace->plane.normal);
@@ -825,7 +842,7 @@ void Collision_TraceBrushPolygonFloat(trace_t *trace, const colbrushf_t *thisbru
        Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, &polyf_brush, &polyf_brush);
 }
 
-void Collision_TraceBrushTriangleMeshFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numtriangles, const int *element3i, const float *vertex3f, int supercontents, const vec3_t segmentmins, const vec3_t segmentmaxs)
+void Collision_TraceBrushTriangleMeshFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numtriangles, const int *element3i, const float *vertex3f, int supercontents, int q3surfaceflags, texture_t *texture, const vec3_t segmentmins, const vec3_t segmentmaxs)
 {
        int i;
        float facemins[3], facemaxs[3];
@@ -834,18 +851,23 @@ void Collision_TraceBrushTriangleMeshFloat(trace_t *trace, const colbrushf_t *th
        polyf_brush.points = polyf_points;
        polyf_brush.planes = polyf_planes;
        polyf_brush.supercontents = supercontents;
+       for (i = 0;i < polyf_brush.numplanes;i++)
+       {
+               polyf_brush.planes[i].q3surfaceflags = q3surfaceflags;
+               polyf_brush.planes[i].texture = texture;
+       }
        for (i = 0;i < numtriangles;i++, element3i += 3)
        {
                VectorCopy(vertex3f + element3i[0] * 3, polyf_points[0].v);
                VectorCopy(vertex3f + element3i[1] * 3, polyf_points[1].v);
                VectorCopy(vertex3f + element3i[2] * 3, polyf_points[2].v);
                Collision_SnapCopyPoints(3, polyf_points, polyf_points, COLLISION_SNAPSCALE, COLLISION_SNAP);
-               facemins[0] = min(polyf_points[0].v[0], min(polyf_points[1].v[0], polyf_points[2].v[0])) - 1;
-               facemins[1] = min(polyf_points[0].v[1], min(polyf_points[1].v[1], polyf_points[2].v[1])) - 1;
-               facemins[2] = min(polyf_points[0].v[2], min(polyf_points[1].v[2], polyf_points[2].v[2])) - 1;
-               facemaxs[0] = max(polyf_points[0].v[0], max(polyf_points[1].v[0], polyf_points[2].v[0])) + 1;
-               facemaxs[1] = max(polyf_points[0].v[1], max(polyf_points[1].v[1], polyf_points[2].v[1])) + 1;
-               facemaxs[2] = max(polyf_points[0].v[2], max(polyf_points[1].v[2], polyf_points[2].v[2])) + 1;
+               facemins[0] = min(polyf_points[0].v[0], min(polyf_points[1].v[0], polyf_points[2].v[0]));
+               facemins[1] = min(polyf_points[0].v[1], min(polyf_points[1].v[1], polyf_points[2].v[1]));
+               facemins[2] = min(polyf_points[0].v[2], min(polyf_points[1].v[2], polyf_points[2].v[2]));
+               facemaxs[0] = max(polyf_points[0].v[0], max(polyf_points[1].v[0], polyf_points[2].v[0]));
+               facemaxs[1] = max(polyf_points[0].v[1], max(polyf_points[1].v[1], polyf_points[2].v[1]));
+               facemaxs[2] = max(polyf_points[0].v[2], max(polyf_points[1].v[2], polyf_points[2].v[2]));
                if (BoxesOverlap(segmentmins, segmentmaxs, facemins, facemaxs))
                {
                        Collision_CalcPlanesForPolygonBrushFloat(&polyf_brush);
@@ -874,19 +896,25 @@ void Collision_TraceLinePolygonFloat(trace_t *trace, const vec3_t linestart, con
        Collision_TraceLineBrushFloat(trace, linestart, lineend, &polyf_brush, &polyf_brush);
 }
 
-void Collision_TraceLineTriangleMeshFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, int numtriangles, const int *element3i, const float *vertex3f, int supercontents, const vec3_t segmentmins, const vec3_t segmentmaxs)
+void Collision_TraceLineTriangleMeshFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, int numtriangles, const int *element3i, const float *vertex3f, int supercontents, int q3surfaceflags, texture_t *texture, const vec3_t segmentmins, const vec3_t segmentmaxs)
 {
        int i;
 #if 1
        // FIXME: snap vertices?
        for (i = 0;i < numtriangles;i++, element3i += 3)
-               Collision_TraceLineTriangleFloat(trace, linestart, lineend, vertex3f + element3i[0] * 3, vertex3f + element3i[1] * 3, vertex3f + element3i[2] * 3);
+               Collision_TraceLineTriangleFloat(trace, linestart, lineend, vertex3f + element3i[0] * 3, vertex3f + element3i[1] * 3, vertex3f + element3i[2] * 3, supercontents, q3surfaceflags, texture);
 #else
        polyf_brush.numpoints = 3;
        polyf_brush.numplanes = 5;
        polyf_brush.points = polyf_points;
        polyf_brush.planes = polyf_planes;
        polyf_brush.supercontents = supercontents;
+       for (i = 0;i < polyf_brush.numplanes;i++)
+       {
+               polyf_brush.planes[i].supercontents = supercontents;
+               polyf_brush.planes[i].q3surfaceflags = q3surfaceflags;
+               polyf_brush.planes[i].texture = texture;
+       }
        for (i = 0;i < numtriangles;i++, element3i += 3)
        {
                float facemins[3], facemaxs[3];
@@ -894,12 +922,12 @@ void Collision_TraceLineTriangleMeshFloat(trace_t *trace, const vec3_t linestart
                VectorCopy(vertex3f + element3i[1] * 3, polyf_points[1].v);
                VectorCopy(vertex3f + element3i[2] * 3, polyf_points[2].v);
                Collision_SnapCopyPoints(numpoints, polyf_points, polyf_points, COLLISION_SNAPSCALE, COLLISION_SNAP);
-               facemins[0] = min(polyf_points[0].v[0], min(polyf_points[1].v[0], polyf_points[2].v[0])) - 1;
-               facemins[1] = min(polyf_points[0].v[1], min(polyf_points[1].v[1], polyf_points[2].v[1])) - 1;
-               facemins[2] = min(polyf_points[0].v[2], min(polyf_points[1].v[2], polyf_points[2].v[2])) - 1;
-               facemaxs[0] = max(polyf_points[0].v[0], max(polyf_points[1].v[0], polyf_points[2].v[0])) + 1;
-               facemaxs[1] = max(polyf_points[0].v[1], max(polyf_points[1].v[1], polyf_points[2].v[1])) + 1;
-               facemaxs[2] = max(polyf_points[0].v[2], max(polyf_points[1].v[2], polyf_points[2].v[2])) + 1;
+               facemins[0] = min(polyf_points[0].v[0], min(polyf_points[1].v[0], polyf_points[2].v[0]));
+               facemins[1] = min(polyf_points[0].v[1], min(polyf_points[1].v[1], polyf_points[2].v[1]));
+               facemins[2] = min(polyf_points[0].v[2], min(polyf_points[1].v[2], polyf_points[2].v[2]));
+               facemaxs[0] = max(polyf_points[0].v[0], max(polyf_points[1].v[0], polyf_points[2].v[0]));
+               facemaxs[1] = max(polyf_points[0].v[1], max(polyf_points[1].v[1], polyf_points[2].v[1]));
+               facemaxs[2] = max(polyf_points[0].v[2], max(polyf_points[1].v[2], polyf_points[2].v[2]));
                if (BoxesOverlap(segmentmins, segmentmaxs, facemins, facemaxs))
                {
                        Collision_CalcPlanesForPolygonBrushFloat(&polyf_brush);
@@ -915,7 +943,7 @@ static colpointf_t polyf_pointsstart[256], polyf_pointsend[256];
 static colplanef_t polyf_planesstart[256 + 2], polyf_planesend[256 + 2];
 static colbrushf_t polyf_brushstart, polyf_brushend;
 
-void Collision_TraceBrushPolygonTransformFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numpoints, const float *points, const matrix4x4_t *polygonmatrixstart, const matrix4x4_t *polygonmatrixend, int supercontents)
+void Collision_TraceBrushPolygonTransformFloat(trace_t *trace, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int numpoints, const float *points, const matrix4x4_t *polygonmatrixstart, const matrix4x4_t *polygonmatrixend, int supercontents, int q3surfaceflags, texture_t *texture)
 {
        int i;
        if (numpoints > 256)
@@ -937,6 +965,11 @@ void Collision_TraceBrushPolygonTransformFloat(trace_t *trace, const colbrushf_t
        polyf_brushend.supercontents = supercontents;
        for (i = 0;i < numpoints;i++)
                Matrix4x4_Transform(polygonmatrixend, points + i * 3, polyf_brushend.points[i].v);
+       for (i = 0;i < polyf_brushstart.numplanes;i++)
+       {
+               polyf_brushstart.planes[i].q3surfaceflags = q3surfaceflags;
+               polyf_brushstart.planes[i].texture = texture;
+       }
        Collision_SnapCopyPoints(numpoints, polyf_pointsstart, polyf_pointsstart, COLLISION_SNAPSCALE, COLLISION_SNAP);
        Collision_SnapCopyPoints(numpoints, polyf_pointsend, polyf_pointsend, COLLISION_SNAPSCALE, COLLISION_SNAP);
        Collision_CalcPlanesForPolygonBrushFloat(&polyf_brushstart);
@@ -962,12 +995,10 @@ void Collision_InitBrushForBox(void)
        int i;
        for (i = 0;i < MAX_BRUSHFORBOX;i++)
        {
-               brushforbox_brush[i].supercontents = SUPERCONTENTS_SOLID;
                brushforbox_brush[i].numpoints = 8;
                brushforbox_brush[i].numplanes = 6;
                brushforbox_brush[i].points = brushforbox_point + i * 8;
                brushforbox_brush[i].planes = brushforbox_plane + i * 6;
-               brushforpoint_brush[i].supercontents = SUPERCONTENTS_SOLID;
                brushforpoint_brush[i].numpoints = 1;
                brushforpoint_brush[i].numplanes = 0;
                brushforpoint_brush[i].points = brushforbox_point + i * 8;
@@ -975,7 +1006,7 @@ void Collision_InitBrushForBox(void)
        }
 }
 
-colbrushf_t *Collision_BrushForBox(const matrix4x4_t *matrix, const vec3_t mins, const vec3_t maxs)
+colbrushf_t *Collision_BrushForBox(const matrix4x4_t *matrix, const vec3_t mins, const vec3_t maxs, int supercontents, int q3surfaceflags, texture_t *texture)
 {
        int i, j;
        vec3_t v;
@@ -1009,8 +1040,13 @@ colbrushf_t *Collision_BrushForBox(const matrix4x4_t *matrix, const vec3_t mins,
                        VectorNormalize(brush->planes[i].normal);
                }
        }
+       brush->supercontents = supercontents;
        for (j = 0;j < brush->numplanes;j++)
+       {
+               brush->planes[j].q3surfaceflags = q3surfaceflags;
+               brush->planes[j].texture = texture;
                brush->planes[j].dist = furthestplanedist_float(brush->planes[j].normal, brush->points, brush->numpoints);
+       }
        VectorCopy(brush->points[0].v, brush->mins);
        VectorCopy(brush->points[0].v, brush->maxs);
        for (j = 1;j < brush->numpoints;j++)
@@ -1032,10 +1068,9 @@ colbrushf_t *Collision_BrushForBox(const matrix4x4_t *matrix, const vec3_t mins,
        return brush;
 }
 
-void Collision_ClipTrace_BrushBox(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask)
+void Collision_ClipTrace_BrushBox(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask, int supercontents, int q3surfaceflags, texture_t *texture)
 {
        colbrushf_t *boxbrush, *thisbrush_start, *thisbrush_end;
-       matrix4x4_t identitymatrix;
        vec3_t startmins, startmaxs, endmins, endmaxs;
 
        // create brushes for the collision
@@ -1043,10 +1078,9 @@ void Collision_ClipTrace_BrushBox(trace_t *trace, const vec3_t cmins, const vec3
        VectorAdd(start, maxs, startmaxs);
        VectorAdd(end, mins, endmins);
        VectorAdd(end, maxs, endmaxs);
-       Matrix4x4_CreateIdentity(&identitymatrix);
-       boxbrush = Collision_BrushForBox(&identitymatrix, cmins, cmaxs);
-       thisbrush_start = Collision_BrushForBox(&identitymatrix, startmins, startmaxs);
-       thisbrush_end = Collision_BrushForBox(&identitymatrix, endmins, endmaxs);
+       boxbrush = Collision_BrushForBox(&identitymatrix, cmins, cmaxs, supercontents, q3surfaceflags, texture);
+       thisbrush_start = Collision_BrushForBox(&identitymatrix, startmins, startmaxs, 0, 0, NULL);
+       thisbrush_end = Collision_BrushForBox(&identitymatrix, endmins, endmaxs, 0, 0, NULL);
 
        memset(trace, 0, sizeof(trace_t));
        trace->hitsupercontentsmask = hitsupercontentsmask;
@@ -1108,7 +1142,7 @@ float Collision_ClipTrace_Line_Sphere(double *linestart, double *lineend, double
        return impactdist / linelength;
 }
 
-void Collision_TraceLineTriangleFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, const float *point0, const float *point1, const float *point2)
+void Collision_TraceLineTriangleFloat(trace_t *trace, const vec3_t linestart, const vec3_t lineend, const float *point0, const float *point1, const float *point2, int supercontents, int q3surfaceflags, texture_t *texture)
 {
 #if 1
        // more optimized
@@ -1219,6 +1253,10 @@ void Collision_TraceLineTriangleFloat(trace_t *trace, const vec3_t linestart, co
        d = 1.0 / sqrt(faceplanenormallength2);
        VectorScale(faceplanenormal, d, trace->plane.normal);
        trace->plane.dist = faceplanedist * d;
+
+       trace->hitsupercontents = supercontents;
+       trace->hitq3surfaceflags = q3surfaceflags;
+       trace->hittexture = texture;
 #else
        float d1, d2, d, f, fnudged, impact[3], edgenormal[3], faceplanenormal[3], faceplanedist, edge[3];
 
@@ -1312,6 +1350,9 @@ void Collision_TraceLineTriangleFloat(trace_t *trace, const vec3_t linestart, co
        //trace->endpos[0] = linestart[0] + fnudged * (lineend[0] - linestart[0]);
        //trace->endpos[1] = linestart[1] + fnudged * (lineend[1] - linestart[1]);
        //trace->endpos[2] = linestart[2] + fnudged * (lineend[2] - linestart[2]);
+       trace->hitsupercontents = supercontents;
+       trace->hitq3surfaceflags = q3surfaceflags;
+       trace->hittexture = texture;
 #endif
 }