public void Update(IEnumerable <GameObject> gameObjs)
{
var curVision = new Tuple <GameObject, float> [EyeCount];
foreach (var curObj in gameObjs)
{
var dist = Vector2.Distance(Owner.CenterPosition, curObj.CenterPosition) - Owner.Radius - curObj.Radius;
if (dist < VisionDistance)
{
var curObjRelAngle = GeomHelper.Angle(Owner.CenterPosition, curObj.CenterPosition);
var closestEyeAngleIndex = -1;
var closestEyeAngleDif = float.MaxValue;
for (int ei = 0; ei < EyeCount; ei++)
{
var relEyeAngle = EyeAngles[ei] + Owner.Rotation;
var anglDif = Math.Abs(GeomHelper.RadRange_TwoPi(curObjRelAngle) - GeomHelper.RadRange_TwoPi(relEyeAngle));
if (anglDif < closestEyeAngleDif && anglDif < EyeSeparationAngle / 2)
{
closestEyeAngleIndex = ei;
closestEyeAngleDif = anglDif;
}
}
if (closestEyeAngleIndex != -1)
{
curVision[closestEyeAngleIndex] = Tuple.Create(curObj, dist);
}
}
}
for (int ei = 0; ei < EyeCount; ei++)
{
var curVis = curVision[ei];
if (curVis != null)
{
var col = GetColor(curVis.Item1);
var closeness = 1 - (curVis.Item2 / VisionDistance);
Visible[ei] = new Vector3(col.X, col.Y, closeness);
}
else
{
Visible[ei] = Vector3.Zero;
}
}
}
