13.创建 Decorator 节点

admin · 发表于 2017-4-8 07:16:46

13.创建 Decorator 节点



   Unreal Engine 4.9






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Quick Start Home

Decorators 即为其他行为树系统中的条件语句，附着于一个 Composite
或 Task
节点，并定义树中的一个分支或单个节点是否能被执行。

AI Pawn 接近目标时，Decorator 将停止执行行为树中的 Rapid Move To 分支。利用 Rapid Move To 或 Move To Task 节点也可执行该操作，但 decorator 可接收任何 Actor 并阻止任何分支的执行。在许多情况下均可重复利用。

步骤

在内容浏览器中双击打开 FollowerBT 行为树。

点击 New Decorator 按钮。

它将创建于和行为树相同的文件夹中。

在内容浏览器中将其重命名为 “CloseEnough”。

编辑器应已将其打开以便编辑。如尚未打开，在内容浏览器中双击打开。

在 My Blueprint 标签下的 Functions 部分中，“覆盖” PerformConditionCheck。

13.创建 Decorator 节点

在新功能中创建以下图表：

p').length != 0) { copyToClipboard($('#fullgraphBTService13_snippet > p').html()); } else { copyToClipboard($('#fullgraphBTService13_snippet').html()); }">Copy Example

13.创建 Decorator 节点

Begin Object Class=K2Node_FunctionEntry Name="K2Node_FunctionEntry_232"
Begin Object Class=EdGraphPin Name="EdGraphPin_2024"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2025"
End Object
Begin Object Name="EdGraphPin_2024"
PinName="then"
Direction=EGPD_Output
PinType=(PinCategory="exec")
LinkedTo(0)=EdGraphPin'K2Node_DynamicCast_1392.EdGraphPin_6389'
End Object
Begin Object Name="EdGraphPin_2025"
PinName="OwnerActor"
PinToolTip="Owner Actor/nActor Reference"
Direction=EGPD_Output
PinType=(PinCategory="object",PinSubCategoryObject=Class'/Script/Engine.Actor')
LinkedTo(0)=EdGraphPin'K2Node_DynamicCast_1392.EdGraphPin_6392'
End Object
SignatureClass=Class'/Script/AIModule.BTDecorator_BlueprintBase'
SignatureName="PerformConditionCheck"
Pins(0)=EdGraphPin'EdGraphPin_2024'
Pins(1)=EdGraphPin'EdGraphPin_2025'
NodePosX=-528
NodePosY=128
NodeGuid=0A0113274C6A45583FC0029DF5C0B42A
End Object
Begin Object Class=K2Node_FunctionResult Name="K2Node_FunctionResult_0"
Begin Object Class=EdGraphPin Name="EdGraphPin_2018"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2019"
End Object
Begin Object Name="EdGraphPin_2018"
PinName="execute"
PinType=(PinCategory="exec")
LinkedTo(0)=EdGraphPin'K2Node_VariableSet_421.EdGraphPin_2031'
End Object
Begin Object Name="EdGraphPin_2019"
PinName="ReturnValue"
PinToolTip="Return Value/nBoolean"
PinType=(PinCategory="bool")
DefaultValue="false"
AutogeneratedDefaultValue="false"
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_39752.EdGraphPin_2117'
End Object
SignatureClass=Class'/Script/AIModule.BTDecorator_BlueprintBase'
SignatureName="PerformConditionCheck"
Pins(0)=EdGraphPin'EdGraphPin_2018'
Pins(1)=EdGraphPin'EdGraphPin_2019'
NodePosX=928
NodePosY=128
NodeGuid=DD04EA414F688EBF13F8C4AF7F135206
End Object
Begin Object Class=K2Node_DynamicCast Name="K2Node_DynamicCast_1392"
Begin Object Class=EdGraphPin Name="EdGraphPin_6389"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_6390"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_6391"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_6392"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_6393"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_6394"
End Object
Begin Object Name="EdGraphPin_6389"
PinName="execute"
PinType=(PinCategory="exec")
LinkedTo(0)=EdGraphPin'K2Node_FunctionEntry_232.EdGraphPin_2024'
End Object
Begin Object Name="EdGraphPin_6390"
PinName="then"
Direction=EGPD_Output
PinType=(PinCategory="exec")
LinkedTo(0)=EdGraphPin'K2Node_VariableSet_421.EdGraphPin_2030'
End Object
Begin Object Name="EdGraphPin_6391"
PinName="CastFailed"
Direction=EGPD_Output
PinType=(PinCategory="exec")
End Object
Begin Object Name="EdGraphPin_6392"
PinName="Object"
PinType=(PinCategory="object",PinSubCategoryObject=Class'/Script/CoreUObject.Object')
LinkedTo(0)=EdGraphPin'K2Node_FunctionEntry_232.EdGraphPin_2025'
End Object
Begin Object Name="EdGraphPin_6393"
PinName="AsFollower AI CON"
Direction=EGPD_Output
PinType=(PinCategory="object",PinSubCategoryObject=BlueprintGeneratedClass'/Game/Blueprints/AI/Follower_AI_Con.Follower_AI_CON_C')
LinkedTo(0)=EdGraphPin'K2Node_VariableSet_421.EdGraphPin_2032'
End Object
Begin Object Name="EdGraphPin_6394"
PinName="bSuccess"
Direction=EGPD_Output
PinType=(PinCategory="bool")
bHidden=True
End Object
TargetType=BlueprintGeneratedClass'/Game/Blueprints/AI/Follower_AI_Con.Follower_AI_CON_C'
Pins(0)=EdGraphPin'EdGraphPin_6389'
Pins(1)=EdGraphPin'EdGraphPin_6390'
Pins(2)=EdGraphPin'EdGraphPin_6391'
Pins(3)=EdGraphPin'EdGraphPin_6392'
Pins(4)=EdGraphPin'EdGraphPin_6393'
Pins(5)=EdGraphPin'EdGraphPin_6394'
NodePosX=-192
NodePosY=144
NodeGuid=735B1F0141DBFBCA06C2CEB84A6936B4
End Object
Begin Object Class=K2Node_VariableSet Name="K2Node_VariableSet_421"
Begin Object Class=EdGraphPin Name="EdGraphPin_2030"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2031"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2032"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2033"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2034"
End Object
Begin Object Name="EdGraphPin_2030"
PinName="execute"
PinType=(PinCategory="exec")
LinkedTo(0)=EdGraphPin'K2Node_DynamicCast_1392.EdGraphPin_6390'
End Object
Begin Object Name="EdGraphPin_2031"
PinName="then"
Direction=EGPD_Output
PinType=(PinCategory="exec")
LinkedTo(0)=EdGraphPin'K2Node_FunctionResult_0.EdGraphPin_2018'
End Object
Begin Object Name="EdGraphPin_2032"
PinName="AI_CON_Ref"
PinType=(PinCategory="object",PinSubCategoryObject=BlueprintGeneratedClass'/Game/Blueprints/AI/Follower_AI_Con.Follower_AI_CON_C')
LinkedTo(0)=EdGraphPin'K2Node_DynamicCast_1392.EdGraphPin_6393'
End Object
Begin Object Name="EdGraphPin_2033"
PinName="Output_Get"
PinToolTip="Retrieves the value of the variable, can use instead of a separate Get node"
Direction=EGPD_Output
PinType=(PinCategory="object",PinSubCategoryObject=BlueprintGeneratedClass'/Game/Blueprints/AI/Follower_AI_Con.Follower_AI_CON_C')
End Object
Begin Object Name="EdGraphPin_2034"
PinName="self"
PinFriendlyName="Target"
PinType=(PinCategory="object",PinSubCategoryObject=BlueprintGeneratedClass'/Game/Blueprints/AI/CloseEnough.CloseEnough_C')
bHidden=True
End Object
VariableReference=(MemberName="AI_CON_Ref",bSelfContext=True)
Pins(0)=EdGraphPin'EdGraphPin_2030'
Pins(1)=EdGraphPin'EdGraphPin_2031'
Pins(2)=EdGraphPin'EdGraphPin_2032'
Pins(3)=EdGraphPin'EdGraphPin_2033'
Pins(4)=EdGraphPin'EdGraphPin_2034'
NodePosX=80
NodePosY=144
NodeGuid=38C59DC54CFF01BBAA134EA5044A5015
End Object
Begin Object Class=K2Node_CallFunction Name="K2Node_CallFunction_123506"
Begin Object Class=EdGraphPin Name="EdGraphPin_2045"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2046"
End Object
Begin Object Name="EdGraphPin_2045"
PinName="self"
PinFriendlyName="Target"
PinToolTip="Target/nController Reference"
PinType=(PinCategory="object",PinSubCategoryObject=Class'/Script/Engine.Controller')
LinkedTo(0)=EdGraphPin'K2Node_VariableGet_624.EdGraphPin_2051'
End Object
Begin Object Name="EdGraphPin_2046"
PinName="ReturnValue"
PinToolTip="Return Value/nPawn Reference"
Direction=EGPD_Output
PinType=(PinCategory="object",PinSubCategoryObject=Class'/Script/Engine.Pawn')
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_30834.EdGraphPin_2057'
End Object
bIsPureFunc=True
bIsConstFunc=True
FunctionReference=(MemberParentClass=Class'/Script/Engine.Controller',MemberName="K2_GetPawn")
Pins(0)=EdGraphPin'EdGraphPin_2045'
Pins(1)=EdGraphPin'EdGraphPin_2046'
NodePosX=-240
NodePosY=384
NodeGuid=431AF3184AEF62590716B7AFBC166188
End Object
Begin Object Class=K2Node_VariableGet Name="K2Node_VariableGet_624"
Begin Object Class=EdGraphPin Name="EdGraphPin_2051"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2052"
End Object
Begin Object Name="EdGraphPin_2051"
PinName="AI_CON_Ref"
Direction=EGPD_Output
PinType=(PinCategory="object",PinSubCategoryObject=BlueprintGeneratedClass'/Game/Blueprints/AI/Follower_AI_Con.Follower_AI_CON_C')
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_123506.EdGraphPin_2045'
End Object
Begin Object Name="EdGraphPin_2052"
PinName="self"
PinFriendlyName="Target"
PinType=(PinCategory="object",PinSubCategoryObject=BlueprintGeneratedClass'/Game/Blueprints/AI/CloseEnough.CloseEnough_C')
bHidden=True
End Object
VariableReference=(MemberName="AI_CON_Ref",bSelfContext=True)
Pins(0)=EdGraphPin'EdGraphPin_2051'
Pins(1)=EdGraphPin'EdGraphPin_2052'
NodePosX=-416
NodePosY=384
NodeGuid=D0D08EBC43D0D16966A4379430CA4038
End Object
Begin Object Class=K2Node_CallFunction Name="K2Node_CallFunction_30834"
Begin Object Class=EdGraphPin Name="EdGraphPin_2057"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2058"
End Object
Begin Object Name="EdGraphPin_2057"
PinName="self"
PinFriendlyName="Target"
PinToolTip="Target/nActor Reference"
PinType=(PinCategory="object",PinSubCategoryObject=Class'/Script/Engine.Actor')
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_123506.EdGraphPin_2046'
End Object
Begin Object Name="EdGraphPin_2058"
PinName="ReturnValue"
PinToolTip="Return Value/nVector "
Direction=EGPD_Output
PinType=(PinCategory="struct",PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.Object:Vector')
DefaultValue="0, 0, 0"
AutogeneratedDefaultValue="0, 0, 0"
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_31029.EdGraphPin_2089'
End Object
bIsPureFunc=True
bIsConstFunc=True
FunctionReference=(MemberParentClass=Class'/Script/Engine.Actor',MemberName="K2_GetActorLocation")
Pins(0)=EdGraphPin'EdGraphPin_2057'
Pins(1)=EdGraphPin'EdGraphPin_2058'
NodePosX=16
NodePosY=384
NodeGuid=07C3199047638F25D389BCB6D5AA4B65
End Object
Begin Object Class=K2Node_CallFunction Name="K2Node_CallFunction_30917"
Begin Object Class=EdGraphPin Name="EdGraphPin_2081"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2082"
End Object
Begin Object Name="EdGraphPin_2081"
PinName="self"
PinFriendlyName="Target"
PinToolTip="Target/nActor Reference"
PinType=(PinCategory="object",PinSubCategoryObject=Class'/Script/Engine.Actor')
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_26123.EdGraphPin_2129'
End Object
Begin Object Name="EdGraphPin_2082"
PinName="ReturnValue"
PinToolTip="Return Value/nVector "
Direction=EGPD_Output
PinType=(PinCategory="struct",PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.Object:Vector')
DefaultValue="0, 0, 0"
AutogeneratedDefaultValue="0, 0, 0"
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_31029.EdGraphPin_2088'
End Object
bIsPureFunc=True
bIsConstFunc=True
FunctionReference=(MemberParentClass=Class'/Script/Engine.Actor',MemberName="K2_GetActorLocation")
Pins(0)=EdGraphPin'EdGraphPin_2081'
Pins(1)=EdGraphPin'EdGraphPin_2082'
NodePosX=16
NodePosY=288
NodeGuid=895F88654C27F0C5BCA2E2A8F868C28C
End Object
Begin Object Class=K2Node_CallFunction Name="K2Node_CallFunction_31029"
Begin Object Class=EdGraphPin Name="EdGraphPin_2087"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2088"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2089"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2090"
End Object
Begin Object Name="EdGraphPin_2087"
PinName="self"
PinFriendlyName="Target"
PinToolTip="Target/nKismet Math Library Reference"
PinType=(PinCategory="object",PinSubCategoryObject=Class'/Script/Engine.KismetMathLibrary')
DefaultObject=Default__KismetMathLibrary
bHidden=True
End Object
Begin Object Name="EdGraphPin_2088"
PinName="A"
PinToolTip="A/nVector "
PinType=(PinCategory="struct",PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.Object:Vector')
DefaultValue="0, 0, 0"
AutogeneratedDefaultValue="0, 0, 0"
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_30917.EdGraphPin_2082'
End Object
Begin Object Name="EdGraphPin_2089"
PinName="B"
PinToolTip="B/nVector "
PinType=(PinCategory="struct",PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.Object:Vector')
DefaultValue="0, 0, 0"
AutogeneratedDefaultValue="0, 0, 0"
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_30834.EdGraphPin_2058'
End Object
Begin Object Name="EdGraphPin_2090"
PinName="ReturnValue"
PinToolTip="Return Value/nVector "
Direction=EGPD_Output
PinType=(PinCategory="struct",PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.Object:Vector')
DefaultValue="0, 0, 0"
AutogeneratedDefaultValue="0, 0, 0"
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_31141.EdGraphPin_2100'
End Object
bIsPureFunc=True
FunctionReference=(MemberParentClass=Class'/Script/Engine.KismetMathLibrary',MemberName="Subtract_VectorVector")
Pins(0)=EdGraphPin'EdGraphPin_2087'
Pins(1)=EdGraphPin'EdGraphPin_2088'
Pins(2)=EdGraphPin'EdGraphPin_2089'
Pins(3)=EdGraphPin'EdGraphPin_2090'
NodePosX=240
NodePosY=352
NodeGuid=5A8D334A4D575676CD7D149EB17AFD8B
End Object
Begin Object Class=K2Node_CallFunction Name="K2Node_CallFunction_31141"
Begin Object Class=EdGraphPin Name="EdGraphPin_2099"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2100"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2101"
End Object
Begin Object Name="EdGraphPin_2099"
PinName="self"
PinFriendlyName="Target"
PinToolTip="Target/nKismet Math Library Reference"
PinType=(PinCategory="object",PinSubCategoryObject=Class'/Script/Engine.KismetMathLibrary')
DefaultObject=Default__KismetMathLibrary
bHidden=True
End Object
Begin Object Name="EdGraphPin_2100"
PinName="A"
PinToolTip="A/nVector "
PinType=(PinCategory="struct",PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.Object:Vector')
DefaultValue="0, 0, 0"
AutogeneratedDefaultValue="0, 0, 0"
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_31029.EdGraphPin_2090'
End Object
Begin Object Name="EdGraphPin_2101"
PinName="ReturnValue"
PinToolTip="Return Value/nFloat"
Direction=EGPD_Output
PinType=(PinCategory="float")
DefaultValue="0.0"
AutogeneratedDefaultValue="0.0"
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_39752.EdGraphPin_2115'
End Object
bIsPureFunc=True
FunctionReference=(MemberParentClass=Class'/Script/Engine.KismetMathLibrary',MemberName="VSize")
Pins(0)=EdGraphPin'EdGraphPin_2099'
Pins(1)=EdGraphPin'EdGraphPin_2100'
Pins(2)=EdGraphPin'EdGraphPin_2101'
NodePosX=352
NodePosY=352
NodeGuid=82F21A114631FECA2AE22AA74D0DF02D
End Object
Begin Object Class=K2Node_VariableGet Name="K2Node_VariableGet_151"
Begin Object Class=EdGraphPin Name="EdGraphPin_2108"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2109"
End Object
Begin Object Name="EdGraphPin_2108"
PinName="AcceptableDistance"
Direction=EGPD_Output
PinType=(PinCategory="float")
DefaultValue="0.0"
AutogeneratedDefaultValue="0.0"
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_39752.EdGraphPin_2116'
End Object
Begin Object Name="EdGraphPin_2109"
PinName="self"
PinFriendlyName="Target"
PinType=(PinCategory="object",PinSubCategoryObject=BlueprintGeneratedClass'/Game/Blueprints/AI/CloseEnough.CloseEnough_C')
bHidden=True
End Object
VariableReference=(MemberName="AcceptableDistance",bSelfContext=True)
Pins(0)=EdGraphPin'EdGraphPin_2108'
Pins(1)=EdGraphPin'EdGraphPin_2109'
NodePosX=368
NodePosY=432
NodeGuid=7CDE1FD54D772AEF57C5F693ED511A8E
End Object
Begin Object Class=K2Node_CallFunction Name="K2Node_CallFunction_39752"
Begin Object Class=EdGraphPin Name="EdGraphPin_2114"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2115"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2116"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2117"
End Object
Begin Object Name="EdGraphPin_2114"
PinName="self"
PinFriendlyName="Target"
PinToolTip="Target/nKismet Math Library Reference"
PinType=(PinCategory="object",PinSubCategoryObject=Class'/Script/Engine.KismetMathLibrary')
DefaultObject=Default__KismetMathLibrary
bHidden=True
End Object
Begin Object Name="EdGraphPin_2115"
PinName="A"
PinToolTip="A/nFloat"
PinType=(PinCategory="float")
DefaultValue="0.0"
AutogeneratedDefaultValue="0.0"
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_31141.EdGraphPin_2101'
End Object
Begin Object Name="EdGraphPin_2116"
PinName="B"
PinToolTip="B/nFloat"
PinType=(PinCategory="float")
DefaultValue="0.0"
AutogeneratedDefaultValue="0.0"
LinkedTo(0)=EdGraphPin'K2Node_VariableGet_151.EdGraphPin_2108'
End Object
Begin Object Name="EdGraphPin_2117"
PinName="ReturnValue"
PinToolTip="Return Value/nBoolean"
Direction=EGPD_Output
PinType=(PinCategory="bool")
DefaultValue="false"
AutogeneratedDefaultValue="false"
LinkedTo(0)=EdGraphPin'K2Node_FunctionResult_0.EdGraphPin_2019'
End Object
bIsPureFunc=True
FunctionReference=(MemberParentClass=Class'/Script/Engine.KismetMathLibrary',MemberName="GreaterEqual_FloatFloat")
Pins(0)=EdGraphPin'EdGraphPin_2114'
Pins(1)=EdGraphPin'EdGraphPin_2115'
Pins(2)=EdGraphPin'EdGraphPin_2116'
Pins(3)=EdGraphPin'EdGraphPin_2117'
NodePosX=544
NodePosY=384
NodeGuid=D75D724E47942AC9F4D77F987B81AD57
End Object
Begin Object Class=K2Node_CallFunction Name="K2Node_CallFunction_26123"
Begin Object Class=EdGraphPin Name="EdGraphPin_2126"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2127"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2128"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2129"
End Object
Begin Object Name="EdGraphPin_2126"
PinName="self"
PinFriendlyName="Target"
PinToolTip="Target/nBTFunction Library Reference"
PinType=(PinCategory="object",PinSubCategoryObject=Class'/Script/AIModule.BTFunctionLibrary')
DefaultObject=Default__BTFunctionLibrary
bHidden=True
End Object
Begin Object Name="EdGraphPin_2127"
PinName="NodeOwner"
PinToolTip="Node Owner/nBTNode Reference"
PinType=(PinCategory="object",PinSubCategoryObject=Class'/Script/AIModule.BTNode')
bHidden=True
End Object
Begin Object Name="EdGraphPin_2128"
PinName="Key"
PinToolTip="Key/nBlackboard Key Selector Structure (by ref)"
PinType=(PinCategory="struct",PinSubCategoryObject=ScriptStruct'/Script/AIModule.BehaviorTreeTypes:BlackboardKeySelector',bIsReference=True,bIsConst=True)
LinkedTo(0)=EdGraphPin'K2Node_VariableGet_111.EdGraphPin_2138'
bDefaultValueIsIgnored=True
End Object
Begin Object Name="EdGraphPin_2129"
PinName="ReturnValue"
PinToolTip="Return Value/nActor Reference"
Direction=EGPD_Output
PinType=(PinCategory="object",PinSubCategoryObject=Class'/Script/Engine.Actor')
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_30917.EdGraphPin_2081'
End Object
bIsPureFunc=True
FunctionReference=(MemberParentClass=Class'/Script/AIModule.BTFunctionLibrary',MemberName="GetBlackboardValueAsActor")
Pins(0)=EdGraphPin'EdGraphPin_2126'
Pins(1)=EdGraphPin'EdGraphPin_2127'
Pins(2)=EdGraphPin'EdGraphPin_2128'
Pins(3)=EdGraphPin'EdGraphPin_2129'
NodePosX=-256
NodePosY=288
ErrorType=1
ErrorMsg="Error Default value /'/' for Key is invalid: /'Literal values are not allowed for pass-by-reference parameters./'"
NodeGuid=FF6A2DB4475BFE05D0CA1EB0D698BB0A
End Object
Begin Object Class=K2Node_VariableGet Name="K2Node_VariableGet_111"
Begin Object Class=EdGraphPin Name="EdGraphPin_2138"
End Object
Begin Object Class=EdGraphPin Name="EdGraphPin_2139"
End Object
Begin Object Name="EdGraphPin_2138"
PinName="TargetToFollow"
Direction=EGPD_Output
PinType=(PinCategory="struct",PinSubCategoryObject=ScriptStruct'/Script/AIModule.BehaviorTreeTypes:BlackboardKeySelector')
LinkedTo(0)=EdGraphPin'K2Node_CallFunction_26123.EdGraphPin_2128'
End Object
Begin Object Name="EdGraphPin_2139"
PinName="self"
PinFriendlyName="Target"
PinType=(PinCategory="object",PinSubCategoryObject=BlueprintGeneratedClass'/Game/Blueprints/AI/CloseEnough.CloseEnough_C')
bHidden=True
End Object
VariableReference=(MemberName="TargetToFollow",bSelfContext=True)
Pins(0)=EdGraphPin'EdGraphPin_2138'
Pins(1)=EdGraphPin'EdGraphPin_2139'
NodePosX=-416
NodePosY=288
NodeGuid=7E75B438413B960D40E5A68DECD346A2
End Object

复制代码

p').length != 0) { copyToClipboard($('#fullgraphBTService13_snippet > p').html()); } else { copyToClipboard($('#fullgraphBTService13_snippet').html()); }">

点击图片将其展开，或点击此处 13.创建 Decorator 节点

在窗口中打开。

该蓝图的变量名、类型和数值：

AI_CON_Ref

Follower_AI_CON_C

无

AcceptableDistance

Float

0.0 - 但此变量的“可编辑”标记为 True，因此可在行为树中根据实例进行变更。

TargetToFollow

BlackboardKeySelector

无 - 但此变量的“可编辑”标记为 True，因此可在行为树中根据实例进行变更。

因其为功能图表，如使用上方图表图片中的 Code Snippet，只能获取图表的中央部分，首尾两端的节点将不会被连接。只需依据图片所示连接节点便可正常执行。

当行为树根据条件命中一个节点时，事件 Receive Condition Check 将被发送至该蓝图。

保存 AI 控制器以便日后轻松参考。

获取需要追踪的 Actor（玩家 Pawn）。

获取该 Actor 和 AI Pawn 之间的距离。

如距离大于可配置量，则条件将返回 True。如小于可配置量，则返回 False，并阻止其所在行为树部分的执行。

这可使其正常工作，避免行为树不断循环至 RapidMoveTo，导致 AI 反复行动。基本上而言，AI 抓住玩家后便会停止行动。



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[引擎的各个功能] 13.创建 Decorator 节点