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Flow Control Question

I am working on a 2d side scroller. I am trying to make a bridge appear piece by peice while you hold down a key. I can’t seem to get it to stop when the key is released. It just keeps going. On the other side of the coin I can get it to stop but I can’t get it to continue when you hold down the key again.

My question is how do I get it to stop if the key is released and then continue from where it left off when you press the key again?

It’s hard to help if you have something already done and you just describe the problem. There can a lot of ways how to approach this but my guess would be on some forgotten gate opening or unpausing/creating timer.

But if you want to start from scratch, simply 1. link input event to gate’s open (add sequence before that so you can open the gate first then call gate’s enter pin) and close, 2. from exit add sequence from 0 should be your bridge placing logic and in 1 link with retriggerable delay and link with gate enter.

Like so
[SPOILER]


Begin Object Class=/Script/BlueprintGraph.K2Node_InputKey Name="K2Node_InputKey_1"
   InputKey=A
   NodePosX=-2048
   NodePosY=2320
   NodeGuid=6AE47D464F3BD30EFE844F83F4FD84E0
   CustomProperties Pin (PinId=BE017ACB43AFB5823DFD31A07EA34B8D,PinName="Pressed",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_ExecutionSequence_0 7D94A9A14A3C311A4BF057A36D24812D,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=719BE87C4CCF47D4194F2DAEDCCACF22,PinName="Released",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_MacroInstance_0 3949542049D58557C520E59B426CB769,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=B6A71E274C46160ACB8501934424A056,PinName="Key",Direction="EGPD_Output",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'"/Script/InputCore.Key"',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
Begin Object Class=/Script/BlueprintGraph.K2Node_MacroInstance Name="K2Node_MacroInstance_0"
   MacroGraphReference=(MacroGraph=EdGraph'"/Engine/EditorBlueprintResources/StandardMacros.StandardMacros:Gate"',GraphBlueprint=Blueprint'"/Engine/EditorBlueprintResources/StandardMacros.StandardMacros"',GraphGuid=5FD0ADDB41B99E726A411F8E87B5F37C)
   NodePosX=-1776
   NodePosY=2292
   NodeGuid=2A663AC44A108B576BE688ADE056BFE2
   CustomProperties Pin (PinId=B4F5512E4811A6C5312CE7AEBF8755D3,PinName="Enter",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_ExecutionSequence_0 B3486B774D12B7AE198117AEE9798658,K2Node_CallFunction_5 D59BCEAB466A20DBE3DDB6AA393D8E03,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=8C99366C4CBD4CC424F5439842CF5B61,PinName="Open",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_ExecutionSequence_0 F8FC7B0A4AA419E73B2148947DB5F79E,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
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   CustomProperties Pin (PinId=D1BC51BF4D180262410282B62ED0E97B,PinName="Toggle",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=ED41407448743DA6E53C60A1AF3FED97,PinName="bStartClosed",PinType.PinCategory="bool",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="true",AutogeneratedDefaultValue="true",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=0B123676497236B523DFC6B7B3B40F75,PinName="Exit",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_ExecutionSequence_1 C895019241BB6D942E0D97BCA32C8E44,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
Begin Object Class=/Script/BlueprintGraph.K2Node_ExecutionSequence Name="K2Node_ExecutionSequence_0"
   NodePosX=-1936
   NodePosY=2320
   NodeGuid=76A78BFC4CB1481D06890E80ED7D2DAF
   CustomProperties Pin (PinId=7D94A9A14A3C311A4BF057A36D24812D,PinName="execute",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_InputKey_1 BE017ACB43AFB5823DFD31A07EA34B8D,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=F8FC7B0A4AA419E73B2148947DB5F79E,PinName="then_0",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_MacroInstance_0 8C99366C4CBD4CC424F5439842CF5B61,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=B3486B774D12B7AE198117AEE9798658,PinName="then_1",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_MacroInstance_0 B4F5512E4811A6C5312CE7AEBF8755D3,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
Begin Object Class=/Script/BlueprintGraph.K2Node_ExecutionSequence Name="K2Node_ExecutionSequence_1"
   NodePosX=-1552
   NodePosY=2292
   NodeGuid=3BEC57CB4DABFBCD51C48BBE12BE7B99
   CustomProperties Pin (PinId=C895019241BB6D942E0D97BCA32C8E44,PinName="execute",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_MacroInstance_0 0B123676497236B523DFC6B7B3B40F75,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=E4AD135F471674367692B78BF2DAA5F7,PinName="then_0",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_Knot_0 547DEA33485A87C8402C28BB9BB2FA87,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=A14B2A3E43326F91FE81C48DDF1B23C1,PinName="then_1",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_CallFunction_5 FC9507664F0DB095156CE5AE1EBEE4F6,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
Begin Object Class=/Script/BlueprintGraph.K2Node_CallFunction Name="K2Node_CallFunction_5"
   FunctionReference=(MemberParent=Class'"/Script/Engine.KismetSystemLibrary"',MemberName="RetriggerableDelay")
   NodePosX=-1408
   NodePosY=2320
   NodeGuid=E40F53654187213A7416AC8EBBB78099
   CustomProperties Pin (PinId=FC9507664F0DB095156CE5AE1EBEE4F6,PinName="execute",PinToolTip="
Exec",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_ExecutionSequence_1 A14B2A3E43326F91FE81C48DDF1B23C1,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=D59BCEAB466A20DBE3DDB6AA393D8E03,PinName="then",PinFriendlyName="Completed",PinToolTip="Completed
Exec",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_MacroInstance_0 B4F5512E4811A6C5312CE7AEBF8755D3,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=ED64E6644C7B85F5EA0659B9AC4E8625,PinName="self",PinFriendlyName=NSLOCTEXT("K2Node", "Target", "Target"),PinToolTip="Target
Kismet System Library Object Reference",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'"/Script/Engine.KismetSystemLibrary"',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,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,bOrphanedPin=False,)
   CustomProperties Pin (PinId=CD93163E488636BEA6ED349673B8E541,PinName="WorldContextObject",PinToolTip="World Context Object
Object Reference",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'"/Script/CoreUObject.Object"',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=CE4E3E9A4B5D4ECB1BEAD185CCA8B8A1,PinName="Duration",PinToolTip="Duration
Float

length of delay (in seconds).",PinType.PinCategory="float",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="1.000000",AutogeneratedDefaultValue="0.2",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=7490158546BE482B88BEF097F65391E3,PinName="LatentInfo",PinToolTip="Latent Info
Latent Action Info Structure

The latent action.",PinType.PinCategory="struct",PinType.PinSubCategory="",PinType.PinSubCategoryObject=ScriptStruct'"/Script/Engine.LatentActionInfo"',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,DefaultValue="LatentInfo",AutogeneratedDefaultValue="LatentInfo",PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
Begin Object Class=/Script/BlueprintGraph.K2Node_Knot Name="K2Node_Knot_0"
   NodePosX=-1136
   NodePosY=2325
   bCommentBubbleVisible=True
   NodeComment="Place Logic"
   NodeGuid=B10F9D7C46BE535D2E3F73A166D392E8
   CustomProperties Pin (PinId=547DEA33485A87C8402C28BB9BB2FA87,PinName="InputPin",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(K2Node_ExecutionSequence_1 E4AD135F471674367692B78BF2DAA5F7,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=True,bAdvancedView=False,bOrphanedPin=False,)
   CustomProperties Pin (PinId=F2C66D6E49FF45F0477A32AB8E2A583F,PinName="OutputPin",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object


[/SPOILER]

I hope this helps.