1. Epic GamesDeveloper
  3. 检测Oculus Rift Guardian系统激活

检测Oculus Rift Guardian系统激活

检测用户是否已经激活了Oculus Rift Guardian系统。

检测Oculus Rift Guardian系统激活
Prerequisite topics

In order to understand and use the content on this page, make sure you are familiar with the following topics:

Skill_family: Tutorial Level 2 Version: 5.0 Parent: sharing-and-releasing-projects/xr-development/supported-xr-platforms/developing-for-oculus/OculusHowTo Order: 2 tags: VR topic-image:sharing-and-releasing-projects/xr-development/supported-xr-platforms/developing-for-oculus/OculusHowTo/GuardianSystem\HTGuardian_System_Topic_Image.png prereq:sharing-and-releasing-projects/xr-development/supported-xr-platforms/developing-for-steamvr/HowTo/StandingCamera prereq:sharing-and-releasing-projects/xr-development/making-interactive-xr-experiences/set-up-motion-controllers prereq:sharing-and-releasing-projects/xr-development/supported-xr-platforms/developing-for-oculus/OculusHowTo/GuardianSystem

Oculus Guardian系统用于显示VR交互区域的边界。追踪设备靠近边界时，Oculus Runtime将自动进行可视提示，告知用户。在以下教程中，我们将阐述如何显示交互以及其他可视提示，以告知用户他们的一台设备已超出或快要超出交互区域。

要使Guardian系统能够正常工作，需要确保你已使用Oculus应用程序对它进行了设置。有关如何设置此系统的更多信息，请参阅官方Oculus Guardian系统设置页面。

在UE中禁用Guardian系统 不 明智，也不可取。然而，你可以调整用户靠近边界时UE作出的响应。

步骤

  1. 要显示Oculus Rift边界，在某台用户设备靠近边界时我们必须要了解这一情况。而 Is Outer Boundary Displayed 节点恰恰使我们能够做到这一点，但是我们需要一种方法，以在每一次更新时检查这一情况是否发生。要在UE中做到这一点，我们首先需要向事件图表中添加以下节点：

    节点名称 值
    Event Tick N/A
    Branch N/A
    Is Outer Boundary Displayed N/A
    Oculus Rift Boundary N/A

  2. 添加好节点之后，我们需要将它们连接起来，使得仅当用户设备靠近边界时才会调用Is Outer Boundary Displayed节点；除此以外，我们不希望任何事件发生。要实现这一点，请按照下图所示设置事件图表：

    单击查看大图。

  3. 接下来，我们不仅要显示用户在Oculus应用程序中设置的边界，还要显示与这些边界相吻合的正方形/长方形交互区域。为了做到这一点，我们将使用 Get Play Area Points 节点来检查运行区域中的所有点。然后，为了确定正方形/长方形交互区域的大小，我们将使用 For Loop 检查每一个点，并且在每一个点上，我们都绘制一个点，然后将每个点都用一条线连起来向用户显示该信息。要实现这一点，请按照下图所示设置事件图表：

    BEGIN OBJECT Begin Object Class=K2Node_CallFunction Name="K2Node_CallFunction_175" bIsPureFunc=True FunctionReference=(MemberParent=Class'/Script/OculusRift.OculusRiftBoundaryComponent',MemberName="GetPlayAreaPoints") NodePosX=832 NodePosY=-260 NodeGuid=ED8B9D104C03A3A9BE5248ACB92A9045 CustomProperties Pin (PinId=A893351045D87FA4ACF13DA19AA91AA7,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinToolTip="Target\nOculus Rift Boundary Component Reference",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/OculusRift.OculusRiftBoundaryComponent',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_VariableGet_85 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"Target"),PinToolTip="Target\nKismet Array Library Reference",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/Engine.KismetArrayLibrary',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultObject="/Script/Engine.Default__KismetArrayLibrary",PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=01395B804D226B8004689BA1CD742F72,PinName="TargetArray",PinToolTip="Target Array\nArray of Vector s\n\nThe array to get an item from 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",PinType.PinCategory="int",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0",AutogeneratedDefaultValue="0",LinkedTo=(K2Node_CallFunction_555 B21F99C242DC61162987FF99AF34760F,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=807DD0AC440EB715E49E72ABE52ABBB5,PinName="Item",PinToolTip="Item\nVector ",Direction="EGPD_Output",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.Vector',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,AutogeneratedDefaultValue="0",LinkedTo=(K2Node_CallFunction_971 EB02B76B45333DD21AF3A2B5B4F3E367,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) End Object Begin Object Class=K2Node_CallArrayFunction Name="K2Node_CallArrayFunction_16" bIsPureFunc=True FunctionReference=(MemberParent=Class'/Script/Engine.KismetArrayLibrary',MemberName="Array_Get") NodePosX=2096 NodePosY=-352 NodeGuid=57FA58A741291929787D30A674147416 CustomProperties Pin (PinId=8E4FE52F403A37B7A080048D77300710,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinToolTip="Target\nKismet Array Library Reference",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/Engine.KismetArrayLibrary',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultObject="/Script/Engine.Default__KismetArrayLibrary",PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=01395B804D226B8004689BA1CD742F72,PinName="TargetArray",PinToolTip="Target Array\nArray of Vector s\n\nThe array to get an item from 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*",PinType.PinCategory="int",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0",AutogeneratedDefaultValue="0",LinkedTo=(K2Node_MacroInstance_15 485524BA49C6E2F23DF0DC9247CD6B93,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=807DD0AC440EB715E49E72ABE52ABBB5,PinName="Item",PinToolTip="Item\nVector ",Direction="EGPD_Output",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.Vector',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,AutogeneratedDefaultValue="0",LinkedTo=(K2Node_CallFunction_970 3949361F44C6842D1E1E52A6D30EBB44,K2Node_CallFunction_971 459C46264271A2417FAABDAED1C20724,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) End Object Begin Object Class=K2Node_CallFunction Name="K2Node_CallFunction_970" FunctionReference=(MemberParent=Class'/Script/Engine.KismetSystemLibrary',MemberName="DrawDebugPoint") NodePosX=2320 NodePosY=-480 NodeGuid=13548C7549C296F678A27F8D67E9C576 EnabledState=DevelopmentOnly CustomProperties Pin (PinId=5C92A48C4EC3E621FB3186B24B7F49C9,PinName="execute",PinToolTip="\nExec",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_MacroInstance_15 585876994C3082C336E4F08AB6707724,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=5CCCAED249A381CA5387F0B65B573277,PinName="then",PinToolTip="\nExec",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_CallFunction_971 2C80F14646574BCD89C88681C0CD95CC,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=597B36884742B881A517BE9B578D5621,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinToolTip="Target\nKismet System Library 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0, 0",LinkedTo=(K2Node_CallArrayFunction_16 807DD0AC440EB715E49E72ABE52ABBB5,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=371502C8439CAF413C6B25BA4B87520B,PinName="Size",PinToolTip="Size\nFloat",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="10",AutogeneratedDefaultValue="0.0",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=B803AC1A40FE7FB0C1911C903B70ED08,PinName="PointColor",PinToolTip="Point Color\nLinear Color Structure",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.LinearColor',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="(R=0.000000,G=1.000000,B=0.085370,A=1.000000)",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=9A97752C4C102DDC57B4E6A567881E77,PinName="Duration",PinToolTip="Duration\nFloat",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0.000000",AutogeneratedDefaultValue="0.000000",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) End Object Begin Object Class=K2Node_CallFunction Name="K2Node_CallFunction_971" FunctionReference=(MemberParent=Class'/Script/Engine.KismetSystemLibrary',MemberName="DrawDebugLine") NodePosX=2608 NodePosY=-304 NodeGuid=1CCED43144BB32BA3C6332B6C3872B5A EnabledState=DevelopmentOnly CustomProperties Pin (PinId=2C80F14646574BCD89C88681C0CD95CC,PinName="execute",PinToolTip="\nExec",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_CallFunction_970 5CCCAED249A381CA5387F0B65B573277,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=37772E68420821E6D8FE989492B623A9,PinName="then",PinToolTip="\nExec",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=AD09356A4D6E12DEB6874EAB7A066595,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinToolTip="Target\nKismet System Library Reference",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/Engine.KismetSystemLibrary',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultObject="/Script/Engine.Default__KismetSystemLibrary",PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=353C68CE4F2B2D72ADDAEBA325715F00,PinName="WorldContextObject",PinToolTip="World Context Object\nObject Reference",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'/Script/CoreUObject.Object',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=459C46264271A2417FAABDAED1C20724,PinName="LineStart",PinToolTip="Line Start\nVector ",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.Vector',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=True,PinType.bIsWeakPointer=False,DefaultValue="0, 0, 0",AutogeneratedDefaultValue="0, 0, 0",LinkedTo=(K2Node_CallArrayFunction_16 807DD0AC440EB715E49E72ABE52ABBB5,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=EB02B76B45333DD21AF3A2B5B4F3E367,PinName="LineEnd",PinToolTip="Line End\nVector ",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.Vector',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=True,PinType.bIsWeakPointer=False,DefaultValue="0, 0, 0",AutogeneratedDefaultValue="0, 0, 0",LinkedTo=(K2Node_CallArrayFunction_17 807DD0AC440EB715E49E72ABE52ABBB5,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=F46FC3744B82648A65ABC8BB8C6323BC,PinName="LineColor",PinToolTip="Line Color\nLinear Color Structure",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'/Script/CoreUObject.LinearColor',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="(R=1.000000,G=0.014920,B=0.000000,A=1.000000)",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=C2B19A7E453BE596D4D31EAC0782E5DD,PinName="Duration",PinToolTip="Duration\nFloat",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="0",AutogeneratedDefaultValue="0.000000",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) CustomProperties Pin (PinId=3C5AC041439E0A0D435858B3A3A854CF,PinName="Thickness",PinToolTip="Thickness\nFloat",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="1",AutogeneratedDefaultValue="0.000000",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,) End Object Begin Object Class=EdGraphNode_Comment Name="EdGraphNode_Comment_3" NodePosX=608 NodePosY=-560 NodeWidth=2192 NodeHeight=480 NodeComment="Draw the play area" NodeGuid=5D41106C4E1F47307BF07AAC129F72E9 End Object END OBJECT

    单击图片复制蓝图代码。

  4. 完成上述步骤后，请确保将"For Loop"与"Branch"节点的"True"输出相连，然后务必编译并保存蓝图。完成后，你的蓝图事件图表应该类似于下图：

    单击查看大图。

最终结果

现在，请戴上Oculus Rift HMD，拿起Touch控制器并使用"VR预览（VR Preview）"启动项目。项目启动后，缓缓将一个Touch控制器朝着Guardian边界移动。当Guardian边界显示时，你应该也会看到正方形/长方形交互区域显示，如以下视频中所示。

UE项目下载

在下面可以找到一个链接，可供你下载用来创建此示例的UE项目。

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