public void OccludeSegments(float sqrOccluderDistance, Vector3 rightOfLeft, Vector3 leftOfRight)
{
int i = 0;
while (i < this.audibleSegmentCount)
{
int num = this.activeSegments[i];
bool flag = false;
if (this.segments[num].sqrDistance >= sqrOccluderDistance)
{
Vector3 lhs = this.segments[num].closestPoint - LocalPlayer.Transform.position;
lhs.y = 0f;
if (Vector3.Dot(lhs, rightOfLeft) >= 0f && Vector3.Dot(lhs, leftOfRight) >= 0f)
{
List <AreaEmitter.Polygon.SegmentFlags> list;
List <AreaEmitter.Polygon.SegmentFlags> expr_8A = list = this.segmentFlags;
int index;
int expr_8E = index = num;
AreaEmitter.Polygon.SegmentFlags segmentFlags = list[index];
expr_8A[expr_8E] = (segmentFlags | AreaEmitter.Polygon.SegmentFlags.Occluded);
this.audibleSegmentCount--;
this.activeSegments[i] = this.activeSegments[this.audibleSegmentCount];
this.activeSegments[this.audibleSegmentCount] = num;
flag = true;
}
}
if (!flag)
{
i++;
}
}
}
private void UpdateSegment(int index)
{
if (this.IsSegmentActive(index))
{
return;
}
AreaEmitter.Segment value = this.segments[index];
Vector3 rhs = LocalPlayer.Transform.position - value.start;
float num = Vector3.Dot(value.delta, rhs);
if (num <= 0f)
{
value.closestT = 0f;
value.closestPoint = value.start;
}
else
{
float num2 = num / value.length;
if (num2 >= value.length)
{
value.closestT = 1f;
value.closestPoint = value.start + value.delta;
}
else
{
value.closestT = num2 / value.length;
value.closestPoint = value.start + value.delta * value.closestT;
}
}
value.sqrDistance = (value.closestPoint - LocalPlayer.Transform.position).sqrMagnitude;
List <AreaEmitter.Polygon.SegmentFlags> list;
List <AreaEmitter.Polygon.SegmentFlags> expr_10D = list = this.segmentFlags;
AreaEmitter.Polygon.SegmentFlags segmentFlags = list[index];
expr_10D[index] = (segmentFlags & ~AreaEmitter.Polygon.SegmentFlags.Occluded);
if (value.sqrDistance < this.sqrMaximumDistance)
{
this.activeSegments.Add(index);
List <AreaEmitter.Polygon.SegmentFlags> list2;
List <AreaEmitter.Polygon.SegmentFlags> expr_14D = list2 = this.segmentFlags;
segmentFlags = list2[index];
expr_14D[index] = (segmentFlags | AreaEmitter.Polygon.SegmentFlags.Active);
}
this.segments[index] = value;
}
public void UpdateSegments(Func <Vector3, Vector2> InverseTransformPoint)
{
for (int i = 0; i < this.activeSegments.Count; i++)
{
List <AreaEmitter.Polygon.SegmentFlags> list;
List <AreaEmitter.Polygon.SegmentFlags> expr_0D = list = this.segmentFlags;
int index;
int expr_1B = index = this.activeSegments[i];
AreaEmitter.Polygon.SegmentFlags segmentFlags = list[index];
expr_0D[expr_1B] = (segmentFlags & ~AreaEmitter.Polygon.SegmentFlags.Active);
}
this.activeSegments.Clear();
if (this.grid != null)
{
this.UpdateSegmentsWithGrid(InverseTransformPoint);
}
else
{
this.UpdateSegmentsWithoutGrid();
}
this.audibleSegmentCount = this.activeSegments.Count;
}
