/// <summary>
/// [CheckVisibility]
/// 視界の当たり判定を行う
/// </summary>
void CheckVisibility(ref Vector3 position)
{
//処理負荷軽減
Vector3 forward = transform.forward;
//判定用構造体
VisibilityContainer container = new VisibilityContainer();
//候補を保存するリスト
List <VisibilityContainer> markPoints = new List <VisibilityContainer>();
//Overlap collisions
var collisions = Physics.OverlapSphere(position, m_visibilityDistance, m_visibilityLayerMask);
//Collision判定ループ
for (int i = 0, length = collisions.Length; i < length; ++i)
{
//GetComponent
var point = collisions[i].GetComponent <BaseMarkPoint>();
//Nullかリンクありでコンティニュー
if (point == null || (point.isLinked & point.isPauseTimer))
{
continue;
}
//Point格納
container.SetPoint(point);
//リストに存在しなければforwardとのDotを計算してリスト追加
if (!markPoints.Contains(container))
{
container.forwardToPositionDot = Vector3.Dot(forward, (point.transform.position - position).normalized);
markPoints.Add(container);
}
}
//視界判定ループ
for (int i = 0; i < markPoints.Count;)
{
//視界判定trueなら++i
if (markPoints[i].forwardToPositionDot > m_angleToCosine)
{
++i;
}
//視界判定falseならRemove
else
{
markPoints.RemoveAt(i);
}
}
//この時点でCount0なら終了
if (markPoints.Count == 0)
{
EditVisibilityHitFlag(false);
return;
}
//この時点でCount1ならヒット確定として終了
else if (markPoints.Count == 1)
{
hitVisibilityMarkPoint = markPoints[0].markPoint;
EditVisibilityHitFlag(true);
return;
}
//forwardとの角度差でソートを行う
float minDot = 10000.0f;
int minIndex = -1;
for (int i = 0, count = markPoints.Count; i < count; ++i)
{
if (minDot < markPoints[i].forwardToPositionDot)
{
minDot = markPoints[i].forwardToPositionDot;
minIndex = i;
}
}
//もっとも角度差が小さいものを選択する
hitVisibilityMarkPoint = markPoints[markPoints.Count - 1].markPoint;
EditVisibilityHitFlag(true);
}
