private void SetBTAsset(BTAsset asset, bool clearNavigationHistory)
{
if (asset != null && (clearNavigationHistory || asset != m_btAsset))
{
if (m_btAsset != null)
{
SaveBehaviourTree();
m_btAsset.Dispose();
m_btAsset = null;
}
BehaviourTree behaviourTree = asset.GetEditModeTree();
if (behaviourTree != null)
{
m_btAsset = asset;
if (asset is RootTreeAsset)
{
m_rootTreeAsset = asset as RootTreeAsset;
}
m_graph.SetBehaviourTree(asset, behaviourTree);
m_canvas.Area = m_btAsset.CanvasArea;
if (Mathf.Approximately(m_btAsset.CanvasPosition.x, 0) && Mathf.Approximately(m_btAsset.CanvasPosition.y, 0))
{
m_canvas.CenterOnPosition(behaviourTree.Root.Position, position.size);
}
else
{
m_canvas.Position = m_btAsset.CanvasPosition;
}
m_canvas.IsDebuging = false;
if (clearNavigationHistory)
{
m_navigationHistory.Clear();
}
m_navigationHistory.Push(m_btAsset, null);
}
else
{
CrashEditor("Failed to deserialize behaviour tree!\n\nThis can happen when you rename a behaviour node class, when you change the namespace or when you delete a behaviour node script.\n\nTry to enable text serialization and manually edit the asset file to fix the behaviour tree.");
}
}
}