#define COLLISION_SNAPSCALE (8.0f)
#define COLLISION_SNAP (1.0f / COLLISION_SNAPSCALE)
-cvar_t collision_impactnudge = {0, "collision_impactnudge", "0.03125"};
-cvar_t collision_startnudge = {0, "collision_startnudge", "0"};
-cvar_t collision_endnudge = {0, "collision_endnudge", "0"};
-cvar_t collision_enternudge = {0, "collision_enternudge", "0"};
-cvar_t collision_leavenudge = {0, "collision_leavenudge", "0"};
+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"};
+cvar_t collision_endnudge = {0, "collision_endnudge", "0", "how much to bias collision trace end"};
+cvar_t collision_enternudge = {0, "collision_enternudge", "0", "how much to bias collision entry fraction"};
+cvar_t collision_leavenudge = {0, "collision_leavenudge", "0", "how much to bias collision exit fraction"};
void Collision_Init (void)
{
}
-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)
{
+ // 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;
colbrushf_t *brush;
{
// 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, 1.0/32.0, pmaxpoints, p[!w], &pnumpoints, 0, NULL, NULL, NULL);
w = !w;
}
}
// add the new plane
VectorCopy(originalplanes[j].normal, planesbuf[numplanesbuf].normal);
planesbuf[numplanesbuf].dist = originalplanes[j].dist;
+ planesbuf[numplanesbuf].supercontents = originalplanes[j].supercontents;
+ planesbuf[numplanesbuf].q3surfaceflags = originalplanes[j].q3surfaceflags;
+ planesbuf[numplanesbuf].texture = originalplanes[j].texture;
numplanesbuf++;
}
}
// 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->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];
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].supercontents = planesbuf[j].supercontents;
+ brush->planes[j].q3surfaceflags = planesbuf[j].q3surfaceflags;
+ brush->planes[j].texture = planesbuf[j].texture;
+ brush->supercontents |= brush->planes[j].supercontents;
}
for (j = 0;j < brush->numtriangles * 3;j++)
brush->elements[j] = elementsbuf[j];
-colbrushf_t *Collision_AllocBrushFloat(mempool_t *mempool, int numpoints, int numplanes, int numtriangles, int supercontents)
-{
- colbrushf_t *brush;
- brush = 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 = (void *)(brush + 1);
- brush->points = (void *)(brush->planes + brush->numplanes);
- brush->elements = (void *)(brush->points + brush->numpoints);
- return brush;
-}
-
void Collision_CalcPlanesForPolygonBrushFloat(colbrushf_t *brush)
{
int i;
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
}
}
- if (developer.integer)
+ if (developer.integer >= 100)
{
// validity check - will be disabled later
Collision_ValidateBrush(brush);
colbrushf_t *Collision_AllocBrushFromPermanentPolygonFloat(mempool_t *mempool, int numpoints, float *points, int supercontents)
{
colbrushf_t *brush;
- brush = Mem_Alloc(mempool, sizeof(colbrushf_t) + sizeof(colplanef_t) * (numpoints + 2));
+ brush = (colbrushf_t *)Mem_Alloc(mempool, sizeof(colbrushf_t) + sizeof(colplanef_t) * (numpoints + 2));
brush->supercontents = supercontents;
brush->numpoints = numpoints;
brush->numplanes = numpoints + 2;
- brush->planes = (void *)(brush + 1);
+ brush->planes = (colplanef_t *)(brush + 1);
brush->points = (colpointf_t *)points;
- Host_Error("Collision_AllocBrushFromPermanentPolygonFloat: FIXME: this code needs to be updated to generate a mesh...\n");
+ Sys_Error("Collision_AllocBrushFromPermanentPolygonFloat: FIXME: this code needs to be updated to generate a mesh...");
return brush;
}
// 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, hitsupercontents = 0, hitq3surfaceflags = 0;
+ float enterfrac = -1, leavefrac = 1, d1, d2, f, imove, newimpactnormal[3], enterfrac2 = -1;
const colplanef_t *startplane, *endplane;
+ texture_t *hittexture = NULL;
- enterfrac = -1;
- enterfrac2 = -1;
- leavefrac = 1;
- fstartsolid = true;
- fendsolid = true;
+ VectorClear(newimpactnormal);
for (nplane = 0;nplane < thatbrush_start->numplanes + thisbrush_start->numplanes;nplane++)
{
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)
{
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)
enterfrac = f;
enterfrac2 = f - collision_impactnudge.value * imove;
VectorLerp(startplane->normal, enterfrac, endplane->normal, newimpactnormal);
+ hitsupercontents = startplane->supercontents;
+ hitq3surfaceflags = startplane->q3surfaceflags;
+ hittexture = startplane->texture;
}
}
}
if (enterfrac < trace->realfraction)
{
enterfrac2 = enterfrac - collision_impactnudge.value * imove;
+ trace->hitsupercontents = thatbrush_start->planes[0].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);
else
#endif
{
+ trace->hitsupercontents = hitsupercontents;
+ trace->hitq3surfaceflags = hitq3surfaceflags;
+ trace->hittexture = hittexture;
trace->realfraction = bound(0, enterfrac, 1);
trace->fraction = bound(0, enterfrac2, 1);
VectorCopy(newimpactnormal, trace->plane.normal);
// 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, hitsupercontents = 0, hitq3surfaceflags = 0;
+ float enterfrac = -1, leavefrac = 1, d1, d2, f, imove, newimpactnormal[3], enterfrac2 = -1;
const colplanef_t *startplane, *endplane;
+ texture_t *hittexture = NULL;
- enterfrac = -1;
- enterfrac2 = -1;
- leavefrac = 1;
- fstartsolid = true;
- fendsolid = true;
+ VectorClear(newimpactnormal);
for (nplane = 0;nplane < thatbrush_start->numplanes;nplane++)
{
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)
enterfrac = f;
enterfrac2 = f - collision_impactnudge.value * imove;
VectorLerp(startplane->normal, enterfrac, endplane->normal, newimpactnormal);
+ hitsupercontents = startplane->supercontents;
+ hitq3surfaceflags = startplane->q3surfaceflags;
+ hittexture = startplane->texture;
}
}
}
// 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
if (enterfrac < trace->realfraction)
{
enterfrac2 = enterfrac - collision_impactnudge.value * imove;
+ trace->hitsupercontents = hitsupercontents;
+ 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);
else
#endif
{
+ trace->hitsupercontents = hitsupercontents;
+ trace->hitq3surfaceflags = hitq3surfaceflags;
+ trace->hittexture = hittexture;
trace->realfraction = bound(0, enterfrac, 1);
trace->fraction = bound(0, enterfrac2, 1);
VectorCopy(newimpactnormal, trace->plane.normal);
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];
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)
{
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);
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];
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);
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)
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].supercontents = supercontents;
+ 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);
}
}
-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;
VectorNormalize(brush->planes[i].normal);
}
}
+ brush->supercontents = supercontents;
for (j = 0;j < brush->numplanes;j++)
+ {
+ brush->planes[j].supercontents = supercontents;
+ 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++)
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
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;
Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, boxbrush, boxbrush);
}
-// LordHavoc: currently unused and not yet tested
+//pseudocode for detecting line/sphere overlap without calculating an impact point
+//linesphereorigin = sphereorigin - linestart;linediff = lineend - linestart;linespherefrac = DotProduct(linesphereorigin, linediff) / DotProduct(linediff, linediff);return VectorLength2(linesphereorigin - bound(0, linespherefrac, 1) * linediff) >= sphereradius*sphereradius;
+
+// LordHavoc: currently unused, but tested
// note: this can be used for tracing a moving sphere vs a stationary sphere,
// by simply adding the moving sphere's radius to the sphereradius parameter,
// all the results are correct (impactpoint, impactnormal, and fraction)
double dir[3], scale, v[3], deviationdist, impactdist, linelength;
// make sure the impactpoint and impactnormal are valid even if there is
// no collision
- impactpoint[0] = lineend[0];
- impactpoint[1] = lineend[1];
- impactpoint[2] = lineend[2];
- impactnormal[0] = 0;
- impactnormal[1] = 0;
- impactnormal[2] = 0;
+ VectorCopy(lineend, impactpoint);
+ VectorClear(impactnormal);
// calculate line direction
- dir[0] = lineend[0] - linestart[0];
- dir[1] = lineend[1] - linestart[1];
- dir[2] = lineend[2] - linestart[2];
+ VectorSubtract(lineend, linestart, dir);
// normalize direction
- linelength = sqrt(dir[0] * dir[0] + dir[1] * dir[1] + dir[2] * dir[2]);
+ linelength = VectorLength(dir);
if (linelength)
{
scale = 1.0 / linelength;
- dir[0] *= scale;
- dir[1] *= scale;
- dir[2] *= scale;
+ VectorScale(dir, scale, dir);
}
// this dotproduct calculates the distance along the line at which the
// sphere origin is (nearest point to the sphere origin on the line)
- impactdist = dir[0] * (sphereorigin[0] - linestart[0]) + dir[1] * (sphereorigin[1] - linestart[1]) + dir[2] * (sphereorigin[2] - linestart[2]);
+ impactdist = DotProduct(sphereorigin, dir) - DotProduct(linestart, dir);
// calculate point on line at that distance, and subtract the
// sphereorigin from it, so we have a vector to measure for the distance
// of the line from the sphereorigin (deviation, how off-center it is)
- v[0] = linestart[0] + impactdist * dir[0] - sphereorigin[0];
- v[1] = linestart[1] + impactdist * dir[1] - sphereorigin[1];
- v[2] = linestart[2] + impactdist * dir[2] - sphereorigin[2];
- deviationdist = v[0] * v[0] + v[1] * v[1] + v[2] * v[2];
+ VectorMA(linestart, impactdist, dir, v);
+ VectorSubtract(v, sphereorigin, v);
+ deviationdist = VectorLength2(v);
// if outside the radius, it's a miss for sure
// (we do this comparison using squared radius to avoid a sqrt)
if (deviationdist > sphereradius*sphereradius)
return 1; // miss (off to the side)
// nudge back to find the correct impact distance
- impactdist += (sqrt(deviationdist) - sphereradius);
+ impactdist += deviationdist - sphereradius;
if (impactdist >= linelength)
return 1; // miss (not close enough)
if (impactdist < 0)
return 1; // miss (linestart is past or inside sphere)
// calculate new impactpoint
- impactpoint[0] = linestart[0] + impactdist * dir[0];
- impactpoint[1] = linestart[1] + impactdist * dir[1];
- impactpoint[2] = linestart[2] + impactdist * dir[2];
+ VectorMA(linestart, impactdist, dir, impactpoint);
// calculate impactnormal (surface normal at point of impact)
- impactnormal[0] = impactpoint[0] - sphereorigin[0];
- impactnormal[1] = impactpoint[1] - sphereorigin[1];
- impactnormal[2] = impactpoint[2] - sphereorigin[2];
+ VectorSubtract(impactpoint, sphereorigin, impactnormal);
// normalize impactnormal
- scale = impactnormal[0] * impactnormal[0] + impactnormal[1] * impactnormal[1] + impactnormal[2] * impactnormal[2];
- if (scale)
- {
- scale = 1.0 / sqrt(scale);
- impactnormal[0] *= scale;
- impactnormal[1] *= scale;
- impactnormal[2] *= scale;
- }
+ VectorNormalize(impactnormal);
// return fraction of movement distance
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
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];
//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
}
colbsp_t *Collision_CreateCollisionBSP(mempool_t *mempool)
{
colbsp_t *bsp;
- bsp = Mem_Alloc(mempool, sizeof(colbsp_t));
+ bsp = (colbsp_t *)Mem_Alloc(mempool, sizeof(colbsp_t));
bsp->mempool = mempool;
- bsp->nodes = Mem_Alloc(bsp->mempool, sizeof(colbspnode_t));
+ bsp->nodes = (colbspnode_t *)Mem_Alloc(bsp->mempool, sizeof(colbspnode_t));
return bsp;
}