public trace_t SV_Trace(Vector3 start, Vector3 end, Vector3 mins, Vector3 maxs, int passEntityNum, int contentMask)
{
trace_t results;
if (mins == null)
mins = Vector3.Zero;
if (maxs == null)
maxs = Vector3.Zero;
// clip to world
MoveClip clip = new MoveClip();
clip.trace = ClipMap.Instance.Box_Trace(start, end, mins, maxs, 0, contentMask);
clip.trace.entityNum = (clip.trace.fraction != 1.0f) ? 1022 : 1023;
if (clip.trace.fraction == 0f)
{
return clip.trace; // blocked immediately by the world
}
clip.contentmask = contentMask;
clip.start = start;
clip.end = end;
clip.mins = mins;
clip.maxs = maxs;
clip.passEntityNum = passEntityNum;
clip.capsule = 0;
// create the bounding box of the entire move
// we can limit it to the part of the move not
// already clipped off by the world, which can be
// a significant savings for line of sight and shot traces
for (int i = 0; i < 3; i++)
{
if (end[i] > start[i])
{
clip.boxmins[i] = clip.start[i] + clip.mins[i] - 1;
clip.boxmaxs[i] = clip.end[i] + clip.maxs[i] + 1;
}
else
{
clip.boxmins[i] = clip.end[i] + clip.mins[i] - 1;
clip.boxmaxs[i] = clip.start[i] + clip.maxs[i] + 1;
}
}
// clip to other solid entities
ClipMoveToEntities(clip);
results = clip.trace;
return results;
}
void ClipMoveToEntities(MoveClip clip)
{
AreaParams ap = AreaEntities(clip.boxmins, clip.boxmaxs, 1024);
int passownernum;
if (clip.passEntityNum != 1023)
{
passownernum = sv.gentities[clip.passEntityNum].r.ownerNum;
if (passownernum == 1023)
passownernum = -1;
}
else
passownernum = -1;
for (int i = 0; i < ap.count; i++)
{
if (clip.trace.allsolid)
return;
sharedEntity touch = sv.gentities[ap.list[i]];
// see if we should ignore this entity
if (clip.passEntityNum != 1023)
{
if (ap.list[i] == clip.passEntityNum)
continue; // don't clip against the pass entity
if (touch.r.ownerNum == clip.passEntityNum)
continue; // don't clip against own missiles
if (touch.r.ownerNum == passownernum)
continue; // don't clip against other missiles from our owner
}
// if it doesn't have any brushes of a type we
// are looking for, ignore it
if ((clip.contentmask & touch.r.contents) == 0)
continue;
// might intersect, so do an exact clip
int clipHandle = ClipHandleForEntity(touch);
Vector3 origin = touch.r.currentOrigin;
Vector3 angles = touch.r.currentAngles;
if (!touch.r.bmodel)
angles = Vector3.Zero;
trace_t trace = ClipMap.Instance.TransformedBoxTrace(clip.start, clip.end, clip.mins, clip.maxs, clipHandle, clip.contentmask, origin, angles);
if (trace.allsolid)
{
clip.trace.allsolid = true;
trace.entityNum = touch.s.number;
}
else if (trace.startsolid)
{
clip.trace.startsolid = true;
trace.entityNum = touch.s.number;
}
if (trace.fraction < clip.trace.fraction)
{
bool oldstart = clip.trace.startsolid;
trace.entityNum = touch.s.number;
clip.trace = trace;
clip.trace.startsolid |= oldstart;
}
}
}
