private bool BrushHasFlag(int modelIndex, int solidNumber, BrushContents flag)
{
var model = _bsp.Models[modelIndex];
var node = _bsp.Nodes[model.HeadNode];
foreach (var leafIndex in BspUtils.GetNodeLeafs(_bsp, node))
{
var leaf = _bsp.Leaves[leafIndex];
var first = leaf.FirstLeafBrush;
var last = leaf.FirstLeafBrush + leaf.NumLeafBrushes;
var idx = first + solidNumber;
if (idx < last)
{
return(_bsp.Brushes[_bsp.LeafBrushes[idx]].Contents.HasFlag(flag));
}
}
return(false);
}
/// <summary>
/// Checks if player is standing on the ground and if he is in a water body.
/// </summary>
private static void PM_CategorizePosition()
{
TraceT trace;
BrushContents cont;
int sample1, sample2;
if (velocity.y > 180)
{
groundentity = false;
pmflags &= ~PMFlags.PMF_ON_GROUND;
}
else
{
trace = Trace.CL_Trace(origin, mins, maxs, origin - new Vector3(0, 0.25f, 0));
groundplane = trace.plane;
groundsurface = trace.surface;
groundcontents = trace.contents;
if (trace.plane == null || (trace.plane.normal.y < 0.7f && !trace.startsolid))
{
groundentity = false;
pmflags &= ~PMFlags.PMF_ON_GROUND;
}
else
{
groundentity = true;
//hitting solid ground will end a waterjump
if (pmflags.HasFlag(PMFlags.PMF_TIME_WATERJUMP))
{
pmflags &= ~PMFlags.PMF_TIME_WATERJUMP;
timer = 0;
}
if (!pmflags.HasFlag(PMFlags.PMF_ON_GROUND))
{
//just hit the ground
pmflags |= PMFlags.PMF_ON_GROUND;
}
}
}
//get waterlevel
waterlevel = 0;
watertype = 0;
sample2 = (int)viewheight - (int)mins.y;
sample1 = sample2 / 2;
Vector3 point = origin;
point.y = origin.y + mins.y + 1;
cont = Utils.NodePointSearch(BSPFile.headnode, point).contents;
if ((cont & BrushContents.MASK_WATER) != 0)
{
watertype = cont;
waterlevel = 1;
point.y = origin.y + mins.y + sample1;
cont = Utils.NodePointSearch(BSPFile.headnode, point).contents;
if ((cont & BrushContents.MASK_WATER) != 0)
{
waterlevel = 2;
point.y = origin.y + mins.y + sample2;
cont = Utils.NodePointSearch(BSPFile.headnode, point).contents;
if ((cont & BrushContents.MASK_WATER) != 0)
{
waterlevel = 3;
}
}
}
}
//for moving and rotating entities :x
private static void CM_TransformedBoxTrace(ref TraceT trace, Vector3 start, Vector3 end, Vector3 mins, Vector3 maxs, BSPNode headnode, BrushContents brushmask, Vector3 origin, Vector3 angles)
{
Vector3 start_l;
Vector3 end_l;
bool rotated;
Vector3[] axes = new Vector3[3];
start_l = start - origin;
end_l = end - origin;
rotated = angles != null;
if (rotated)
{
Utils.AnglesToAxis(angles, out axes[0], out axes[1], out axes[2]);
start_l = Utils.RotatePoint(start_l, axes);
end_l = Utils.RotatePoint(end_l, axes);
}
CM_BoxTrace(out trace, start_l, end_l, mins, maxs, headnode, (int)brushmask);
if (rotated && trace.fraction != 1 && trace.plane != null)
{
Utils.TransposeAxis(ref axes);
trace.plane.normal = Utils.RotatePoint(trace.plane.normal, axes);
}
//Carmack: FIXME: offset plane distance? M: wut?
trace.endpos = Vector3.Lerp(start, end, trace.fraction);
}
