/// <summary>
/// Don call this every tick, update
/// </summary>
/// <returns></returns>
sealed public override bool IsAttatchable()
{
FlowBlockConnector.ConnectorType expectedConnectorTypeFlag = FlowBlockConnector.ConnectorType.None;
if (IsPreviousBlockEditorUnitAssignable == true && PreviousFlowBlockEditorUnit == null)
{
expectedConnectorTypeFlag = expectedConnectorTypeFlag | FlowBlockConnector.ConnectorType.DownBump;
}
if (IsNextBlockEditorUnitAssignable == true && NextFlowBlockEditorUnit == null)
{
expectedConnectorTypeFlag = expectedConnectorTypeFlag | FlowBlockConnector.ConnectorType.UpNotch;
}
FlowBlockConnector flowBlockConnector = this.GetTopFlowBlockConnector(transform.position, expectedConnectorTypeFlag);
if (flowBlockConnector == null && this.NextFlowBlockEditorUnit != null)
{//if Fail to find flowblockconnector
//Find Top Block Connector at LowestDescendantBlock Postion
FlowBlockEditorUnit lowestDescendantBlockUnit = this.LowestDescendantBlockUnit;
flowBlockConnector = this.GetTopFlowBlockConnector(lowestDescendantBlockUnit.transform.position, FlowBlockConnector.ConnectorType.UpNotch);
}
if (flowBlockConnector == null || flowBlockConnector.OwnerFlowBlockEditorUnit == this || flowBlockConnector.OwnerBlockEditorUnit._BlockEditorUnitFlag.HasFlag(BlockEditorUnitFlag.IsAttachable) == false)
{
base.AttachableEditorElement = null;
return(false);
}
else
{
if (flowBlockConnector._ConnectorType == FlowBlockConnector.ConnectorType.UpNotch)
{//if hit connector is up notch type
if (this.IsNextBlockEditorUnitAssignable)
{
base.AttachableEditorElement = flowBlockConnector;
return(true);
}
else
{
base.AttachableEditorElement = null;
return(false);
}
}
else
{//if hit connector is down bump type
if (this.IsPreviousBlockEditorUnitAssignable)
{
base.AttachableEditorElement = flowBlockConnector;
return(true);
}
else
{
base.AttachableEditorElement = null;
return(false);
}
}
}
}
/// <summary>
/// Gets the top flow block connector.
/// </summary>
/// <returns>The top flow block connector.</returns>
/// <param name="worldPoint">World position.</param>
/// <param name="exceptedUnitList">Excepted unit list.</param>
/// <param name="expectedConnectorType">Expected connector type. if this value is 2 , UpNotch, DownBump is ok</param>
private FlowBlockConnector GetTopFlowBlockConnector(Vector2 worldPoint, FlowBlockConnector.ConnectorType expectedConnectorTypeFlag)
{
return(UiUtility.GetTopBlockEditorElementWithWorldPoint <FlowBlockConnector>(worldPoint, FlowBlockConnector.FlowBlockConnectorTag, x => expectedConnectorTypeFlag.HasFlag(x._ConnectorType) == true));
}
