private static void Swap(List <TreeWindSfxManager.TreeInfo> trees, int a, int b)
{
if (a != b)
{
TreeWindSfxManager.TreeInfo value = trees[a];
trees[a] = trees[b];
trees[b] = value;
}
}
private static TreeWindSfxManager.TreeInfo GetTreeInfo(TreeWindSfx tree)
{
TreeWindSfxManager.TreeInfo treeInfo;
if (TreeWindSfxManager.sTreeInfoListPool.Count > 0)
{
treeInfo = TreeWindSfxManager.sTreeInfoListPool.Dequeue();
treeInfo.Init(tree);
}
else
{
treeInfo = new TreeWindSfxManager.TreeInfo(tree);
}
return(treeInfo);
}
public static void Remove(TreeWindSfx tree)
{
if (TreeWindSfxManager.sTrees.Contains(tree))
{
TreeWindSfxManager.sTrees.Remove(tree);
for (int i = 0; i < TreeWindSfxManager.sTreeInfoList.Count; i++)
{
TreeWindSfxManager.TreeInfo treeInfo = TreeWindSfxManager.sTreeInfoList[i];
if (treeInfo.tree == tree)
{
treeInfo.Clear();
TreeWindSfxManager.sTreeInfoListPool.Enqueue(treeInfo);
TreeWindSfxManager.sTreeInfoList.RemoveAt(i);
break;
}
}
}
}
private void UpdateVirtualisation()
{
if (TreeWindSfxManager.sTrees.Count <= this.TargetActiveCount)
{
foreach (TreeWindSfx treeWindSfx in TreeWindSfxManager.sTrees)
{
treeWindSfx.Activate();
}
}
else
{
List <TreeWindSfxManager.TreeInfo> list = TreeWindSfxManager.sTreeInfoList;
if (LocalPlayer.Transform != null)
{
Vector3 position = LocalPlayer.Transform.position;
for (int i = 0; i < list.Count; i++)
{
TreeWindSfxManager.TreeInfo treeInfo = list[i];
Vector3 vector = treeInfo.position - position;
treeInfo.sqrDistance = vector.sqrMagnitude;
treeInfo.direction = Mathf.Atan2(vector.z, vector.x);
}
}
for (int j = 0; j < this.TargetActiveCount; j++)
{
int num = j;
for (int k = j + 1; k < list.Count; k++)
{
if (list[k].sqrDistance < list[num].sqrDistance)
{
num = k;
}
}
TreeWindSfxManager.Swap(list, j, num);
list[j].tree.Activate();
TreeWindSfxManager.OccludeTrees(list[j], this.TreeOcclusionWidth, list, j + 1);
}
for (int l = this.TargetActiveCount; l < list.Count; l++)
{
list[l].tree.Deactivate(this.TreePersistTime);
}
}
}
private static void OccludeTrees(TreeWindSfxManager.TreeInfo occluder, float occlusionWidth, List <TreeWindSfxManager.TreeInfo> trees, int startIndex)
{
if (startIndex < trees.Count)
{
float num;
if (occluder.sqrDistance > 0f)
{
num = Mathf.Atan(occlusionWidth / 2f / Mathf.Sqrt(occluder.sqrDistance));
}
else
{
num = 3.14159274f;
}
float num2 = occluder.direction - num;
float num3 = occluder.direction + num;
if (num2 < 0f)
{
num2 += 6.28318548f;
num3 += 6.28318548f;
}
for (int i = startIndex; i < trees.Count; i++)
{
float num4 = trees[i].direction;
if (num4 < num2)
{
num4 += 6.28318548f;
}
if (num2 <= num4 && num4 <= num3)
{
float num5 = (num4 - num2) / num;
num5 -= 1f;
num5 = 3f - 2f * Math.Abs(num5);
trees[i].sqrDistance *= num5 * num5;
}
}
}
}
private static void DrawDebug()
{
if (TreeWindSfxManager.activeTexture == null)
{
TreeWindSfxManager.CreateDebugTextures();
}
List <TreeWindSfxManager.TreeInfo> list = TreeWindSfxManager.sTreeInfoList;
float num = 0f;
int num2 = 0;
for (int i = 0; i < list.Count; i++)
{
TreeWindSfxManager.TreeInfo treeInfo = list[i];
TreeWindSfx tree = treeInfo.tree;
Vector3 vector = LocalPlayer.Transform.InverseTransformPoint(tree.transform.position);
num = Math.Max(num, vector.sqrMagnitude);
if (tree.IsActive)
{
num2++;
}
treeInfo.sqrDistance = vector.sqrMagnitude;
treeInfo.direction = Mathf.Atan2(vector.z, vector.x);
}
num = Mathf.Sqrt(num);
Vector2 vector2 = new Vector2(110f, (float)(Camera.main.pixelHeight - 110));
GUI.Box(new Rect(vector2.x - 105f, vector2.y - 105f - 35f, 210f, 245f), string.Format("Active trees: {0} Total trees: {1}", num2, list.Count));
foreach (TreeWindSfxManager.TreeInfo treeInfo2 in list)
{
float num3 = Mathf.Sqrt(treeInfo2.sqrDistance) / num * 100f;
float num4 = vector2.x + num3 * Mathf.Cos(treeInfo2.direction);
float num5 = vector2.y - num3 * Mathf.Sin(treeInfo2.direction);
Texture2D image = (!treeInfo2.tree.IsActive) ? TreeWindSfxManager.inactiveTexture : TreeWindSfxManager.activeTexture;
GUI.DrawTexture(new Rect(num4 - 5f, num5 - 5f, 10f, 10f), image);
}
GUI.DrawTexture(new Rect(vector2.x - 5f, vector2.y - 5f, 10f, 10f), TreeWindSfxManager.playerTexture);
}
