[UE] Behavior Tree 2

 

행동 트리를 만든 후에는 게임이나 시뮬레이션에서 NPC 또는 AI가 제어하는 엔티티에 연결할 수 있다. 그런 다음 동작 트리는 트리 구조에 정의된 논리에 기초하여 엔티티의 동작을 결정한다.

 

목차

 

 

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Behavior Tree - Melee

 

0. BP_Enemy - StateComponent	BP_AIController_Melee	0. BB_AI 0. BT_Melee
1. BP_Enemy_AI - WeaponComponent - MovingComponent - BehaviorTree (Behavior Tree)		1. BTService_Melee
2. BP_Enemy_AI_Melee		2. BTTask_Speed 2. BTTask_Patrol

 

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2. BP_Enemy_AI_Melee

 

 

• Default - Behavior Tree - BT_Melee로 변경

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E Behavior Type 생성

 

블루프린트 - 열거형 - EBehaviorType 생성

• Wait, Approach, Action, Patrol, Hitted, Avoid 추가

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E Speed Type 생성

 

블루프린트 - 열거형 - ESpeedType 생성

• Walk, Run, Sprint 추가

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Moving Component - Set Speed 함수 추가

 

• Set Speed 함수 추가
  • 입력 추가: InType (ESpeedType)
• 변수 생성: Speed (float 배열)
  • 0: 200.0 설정
  • 1: 400.0 설정
  • 2: 600.0 설정

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0. BB_AI

 

Blackboard

• 새 키:
  • SelfActor (Object): Actor
  • Target (Object): BP_Player
  • Behavior (Enum): EBehavior Type

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0. BT_Melee

 

• Notify Observer
  • On Result Change:
    • 결과 바뀜 - 가져온 컨디션 결과가 바뀌었을 때만 재시작 한다.
    • =실행하면서 성공이나 실패가 바뀌없을 때 재시작 한다.
    • =Reevaluate only when the condition has changed.
  • On Value Change:
    • 값 바뀜 - 관찰되는 블랙보드값이 바뀔 때마다 재시작한다.
    • =지정한 변수값이 바뀔 때 재시작 한다. 잘 사용하지 않음.
    • =Reevaluate only when the observed Blackboard Key changes.

https://docs.unrealengine.com/4.27/ko/InteractiveExperiences/ArtificialIntelligence/BehaviorTrees/BehaviorTreeNodeReference/BehaviorTreeNodeReferenceDecorators/

 

 

 

 

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1. BTService_Melee

 

Tick AI

• Tick AI 함수 생성
  • 입력 생성: InController (BP_AIController_Melee), InCharacter (BP_Enemy_AI)
• 변수 생성: 
  • TargetKey (Blackboard Key Selector)
  • BehaviorKey (Blackboard Key)
  • ActionDistance (Float): 150.0 설정. 여기서는 행동이 일어나게 하는 범위로 사용하는 변수로 사용. 150.0 범위 내로 들어가면 Branch가 True가 되어 EBehaviorType이 Action이 된다.   
• 로컬변수 생성: Target (BP_Player)

 

 

Event Graph

• 함수 오버라이드 - Receive Tick AI 이벤트 생성
• 위에서 만든 Tick AI 함수 호출하여 실행. 

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2. BTTask_Speed

 

Event Graph

• 함수 오버라이드 - Receive Execute AI 이벤트 생성
• 변수 생성: SpeedType (ESpeedType) 
• Moving Component에서 Set Speed를 호출해온다(조금 전에 Moving Component내에 Set Speed함수를 만들어 주었다).

 

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2. BTTask_Patrol

 

Event Graph

• 함수 오버라이드 - Receive Execute AI 이벤트, Received Tick AI 이벤트 생성
• 변수 생성: 
  • RandomDistance (Float): 1500.0으로 설정.
  • Location (Vector)
  • AcceptanceRadius (Float): 20.0으로 설정.
  • DrawDebug (Boolean)

 

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실행화면

 

 

 

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ABP: Animation Blueprint
AN: Blueprint Class AnimNotify
ANS: Blueprint Class - AnimNotifyState

AO: Aim Offset

BP: Blueprint Class
BS: Blend Space

BF: Blueprint Function Library
CS: Matinee Camera Shake
E: Enum 열거형
DT: Data Table
F: 구조체

I: Blueprint Interface

WB: Widget Bluepprint

 

UE2212_02

	Level - LEVEL ABP_Player BP_GameMode BF_Helper IDamage
AdvancedMagicFX12	Materials
	Meshes
	Particles
	Textures
Character	Animation	Bow
		Common
		Fist
		Hammer
		Parkour
		Sword
		Unarmed
		Wizard
	BlendSpaces	BS_Bow BS_Fist BS_Hammer BS_Sword BS_Unarmed BS_Wizard
	Materials	MaterialLayers
		M_UE4Man_Body M_UE4Man_ChestLogo
	Mesh	SK_Mannequin SK_MAnnequin_PhysicsAsset Skel_Mannequin
	Montages	Around	Around_Montage
		Bow	AR_DrawBow_Montage AR_ShootAndDraw_Montage
		Common	HitReaction_Move_Montage HitReaction_Stop_Montage
		Fist	Fist_Attack_1_Montage Fist_Attack_2_Montage Fist_Attack_3_Montage Fist_Hitted_Montage
		Hammer	Frank_RPG_2Hand_Combo01_1_Montage Frank_RPG_2Hand_Combo01_2_Montage Frank_RPG_2Hand_Combo01_3_Montage Frank_RPG_2Hand_Combo01_4_Montage
		Parkour	Run_Climb_Montage
		Sword	Draw_Sword_Montage Sword_Attack_1_Montage Sword_Attack_2_Montage Sword_Attack_3_Montage
		Warp	Warp_Montage
		Enemy_DeadFall_Montage HitReaction_Montage
	Textures	UE4_LOGO_CARD UE4_Mannequin__normals UE4_Mannequin_MAT_MASKA UE4Man_Logo_N
	Weapons	Elven Bow
		Greate Hammer
		Sword
Component	EStateType MovingComponent StateComponent WeaponComponent FeetComponent TargetComponent
Effects	P_Cube_Mesh_Test P_Genno_Weapon_Lightning_01
Enemies	Basic	BP_AIController_Basic BP_Enemy_AI_Basic BT_Basic BT_Move
	Melee	BP_AIController_Melee BP_Enemy_AI_Melee BT_Melee BTService_Melee
	Tasks	BTTask_Patrol BTTask_Speed
	BB_AI BP_Enemy BP_Enemy_AI
Environment	Materials	Textures
	Meshes
	Obstacle
InfinityBladeEffects	Effects	FX_Combat_Base
		FX_Materials
		FX_Meshes
		FX_Monsters
		FX_Textures
		FX_Textures_IB
		Masters
Materials	M_Mesh M_White_Inst M_Red_Inst M_Green_Inst M_Blue_Inst M_UE4Man_Body_Inst M_UE4Man_ChesLogo_Inst
Meshes	Cone_2 Cube_2 Cylinder_2 Sphere_2
Notifies	ANS_Equip ANS_Combo ANS_Collision AN_BeginAction AN_EndAction AN_CameraShake AN_End_BowString AN_EndParkour
Parkour	EParkourArrowType EParkourType FParkourData ParkourComponent ParkourData
Player	BP_Player FZoomData
Sounds	S_BGM S_HitPunch S_OneHand_Hit
Textures	Crosshair T_Around T_Black T_Bow T_Fireball T_Fist T_Hammer T_Sword T_Warp
Weapons	Around	Around_FireBall Around_FireBall1 Around_IceBall Around_IceBall1 DT_DoAction_Around DT_Equip_Around DT_HitData_Around Skill_Around Weapon_Around
	Bow	AO_Aim Curve_Aim DT_DoAction_Bow DT_Equip_Bow DT_HitData_Bow FAimData Skill_Aim Skill_Arrow Weapon_Bow
	FireBall	DT_DoAction_FireBall DT_Equip_FireBall DT_HitData_FireBall Skill_FireBall Weapon_FireBall
	Fist	Combo_Fist - Blueprint Class Actor Weapon_Combo 상속 CS_Fist DT_DoAction_Fist DT_Equip_Fist DT_HitData_Fist
	Hammer	Combo_Fist - Blueprint Class Actor Weapon_Combo 상속 CS_Hammer DT_DoAction_Hammer DT_Equip_Hammer DT_HitData_Hammer
	Sword	Combo_Sword - Blueprint Class Actor Weapon_Combo 상속 CS_Sword DT_DoAction_Sword DT_Equip_Sword DT_HitData_Sword
	Warp	Weapon_Warp -  Blueprint Class Actor Weapon 상속 DT_DoAction_Warp DT_Equip_Warp
	EWeaponType FDoActionData FEquipData FHitData Weapon - Blueprint Class Actor Weapon_Combo - Blueprint Class Actor Weapon 상속 M_Weapon Skill
Widget	WB_CrossHair WB_Menu WB_MenuButton WB_Name