[UE] Behavior Tree 3, Spline(Bezier, Catmull-Rom)

 

언리얼 엔진에서 동작 트리를 만들려면 노드를 끌어다 놓아 트리 구조를 만들 수 있는 동작 트리 편집기를 사용할 수 있다. C++ 또는 Blueprint 스크립팅을 사용하여 사용자 지정 작업 및 장식자 노드를 정의할 수도 있다.

 

목차

 

 

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Spline -  Bezier vs. Catmull-Rom

 

캣멀롬 스플라인은 보간 스플라인의 한 종류로서 제어점을 뚫는 모양을 가진다. 

캣멀롬 스플라인은 네 개의 점 사이를 보간한다.

 

https://tsyang.tistory.com/57

 

https://blog.naver.com/PostView.nhn?isHttpsRedirect=true&blogId=sorkelf&logNo=40154552485 

 

 

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Behavior Tree - Patrol (+Spline Path)

 

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

 

 

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0. BP_PatrolPath 생성

 

Blueprint Class - Actor - BP_PatrolPath 생성

 

Viewport

• 컴포넌트 추가 - Spline, TextRender
  • Spline: 위치(0, 0, 30)으로 수정. 
  • TextRender: 트랜스폼 수정. 텍스트 가운데 정렬. 텍스트 색 빨강으로 변경. 

 

Construction Script

• Construction Script의 특징
  • Construction Script는 블루프린트의 생성자 정도로 생각하면 된다.
  • 배치가 되거나 생성이 되거나 멤버값이 바뀔 때 호출된다.
• 변수 생성: Loop (Boolean)
  • Patrol Path에 따라 이동할 때 Loop 여부를 체크하기 위해 만든 변수.

 

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0. Patrol Component 생성

 

Blueprint Class - Actor Component - Patrol Component 생성

 

 

Is Valid Path (pure)

• Is Valid Path (pure) 함수 생성.
  • 지정해준 Path가 유효한지 확인해주는 함수. 리턴전용으로 만들어준다.
• 출력 추가: ReturnValue (Boolean)

 

 

Get Move To (pure)

• Get Move To (pure) 함수 생성.
  • IsValidPath로 Path가 유효한지 검사.
    • True라면 Path의 Spline을 따라 이동한다. Get Location at Spline Point는 Spline Point Index의 위치를 리턴해준다.
    • False라면 바로 리턴한다.
• 출력 추가: Out Result (Boolean), OutLocation (Vector)
  • OutLocation: Spline Point 위치를 리턴한다.

 

 

Update Next Index

• 변수 생성: Path (BP_PatrolPath), Update (Integer), Reserve (Boolean)
• 로컬변수 생성: Count (Integer)

 

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2. BP_Enemy_AI_Melee

 

• Patrol Component 추가

 

 

 

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2. BTTask_Patrol 

 

Drawing

• Drawing 함수 추가
  • 움직일 곳을 Debugging용으로 보여줄 함수.
  • 체크용으로 사용하는 것이라 추후에 숨기거나 삭제한다.

 

 

Event Graph

확대

• 변수 생성: RandomDistance (Float), Location (Vector), AcceptanceRadius (Float), DrawDebug (Boolean)

 

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0. BT_Melee

 

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실행화면

 

 

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Behavior Tree - Equip

 

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

 

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2. BP_Enemy_AI_Melee

 

• WeaponComponent - Default - Weapon Classes
  • 슬롯 8개 생성 후 2번 위치에 Combo_Sword 지정 

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Weapon Component - Get Current Type 함수 생성

 

Get Current Type 함수 생성

 

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2. BTTask_Equip 생성

 

Event Graph

• Receive Execute AI 이벤트, Receive Tick AI 이벤트 생성
• 변수 생성: WeaponType (EWeaponType) 
• Receive Tick AI 이벤트 상태 체크
  • Weapon - In Equipping이 False인지 체크
  • Is Idle Mode인지 체크
  • 아래의 이미지 참고 

 

참고) Weapon의 End_Equip 함수

 

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0. BT_Melee

 

• Action Sequence 추가

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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 BP_PatrolPath BT_Melee BTService_Melee BTTask_Patrol PatrolComponent
	Tasks	BTTask_Speed BTTask_Equip
	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