/// <summary>
/// Gets proper next folder's position. Used to spawn folders in available positions.
/// </summary>
/// <returns>KeyValuePair of vertices used to calculate spawn position and spawn position.</returns>
/// <param name="currentVertexFollowed">Current vertex followed.</param>
public KeyValuePair <VertexController[], Vector2> GetNextFolderPosition(VertexController currentVertexFollowed)
{
int currentVertexIndex = currentVertexFollowed.transform.GetSiblingIndex();
int nextVertexIndex = (currentVertexIndex + 1) % this.transform.childCount;
VertexController nextVertex = this.transform.GetChild(nextVertexIndex).GetComponent <VertexController>();
int nextNextVertexIndex = (currentVertexIndex + 2) % this.transform.childCount;
VertexController nextNextVertex = this.transform.GetChild(nextNextVertexIndex).GetComponent <VertexController>();
float availableSpaceScale = 0.5f;
Vector2 availableSpaceVertex1 = currentVertexFollowed.transform.position + (nextVertex.transform.position - currentVertexFollowed.transform.position) * (1f - availableSpaceScale) / 3f;
availableSpaceVertex1 += (Vector2)(nextNextVertex.transform.position - currentVertexFollowed.transform.position) * (1f - availableSpaceScale) / 3f;
Vector2 availableSpaceVertex2 = nextVertex.transform.position + (currentVertexFollowed.transform.position - nextVertex.transform.position) * (1f - availableSpaceScale) / 3f;
availableSpaceVertex2 += (Vector2)(nextNextVertex.transform.position - nextVertex.transform.position) * (1f - availableSpaceScale) / 3f;
Vector2 availableSpaceVertex3 = nextNextVertex.transform.position + (currentVertexFollowed.transform.position - nextNextVertex.transform.position) * (1f - availableSpaceScale) / 3f;
availableSpaceVertex3 += (Vector2)(nextVertex.transform.position - nextNextVertex.transform.position) * (1f - availableSpaceScale) / 3f;
// Debug lines drawing, uncomment to debug this method
//Debug.DrawLine(availableSpaceVertex1, availableSpaceVertex2, Color.white, 3f);
//Debug.DrawLine(availableSpaceVertex2, availableSpaceVertex3, Color.white, 3f);
//Debug.DrawLine(availableSpaceVertex3, availableSpaceVertex1, Color.white, 3f);
VertexController[] returnList = { currentVertexFollowed, nextVertex, nextNextVertex };
return(new KeyValuePair <VertexController[], Vector2>(returnList, Math3d.GetRandomPointInsideTriangle(availableSpaceVertex1, availableSpaceVertex2, availableSpaceVertex3)));
}