Destructible Mesh (Fracture)

Mesh create or import > Fracture create or import fbx

Destructible Properties Matrix

https://docs.unrealengine.com/latest/KOR/Engine/Physics/Destructibles/DestructibleProperties/index.html

https://docs.unrealengine.com/latest/INT/Engine/Performance/SystemSettings/index.html

https://docs.unrealengine.com/latest/INT/Videos/PLZlv_N0_O1gYeJX3xX44yzOb7_kTS7FPM/-gGiEmYj4oE/

https://forums.unrealengine.com/showthread.php?922-Destructible-Meshes-Two-Part-Tutorial

https://www.youtube.com/watch?v=sKJlB_ep3lU

to move at a constant speed you can control, you should use Velocity directly. Add Impulse basically does Velocity+=impulse. while AddForce is more like a thruster, it accelerates.

Currently the only way to have multiple fractures is to import an APB file. You can use PhysXLab for that.

- RadialimpulseActor

impulse: 충격,폭파 + 가속도

force: 원점에서 밀어내는 힘.

https://docs.unrealengine.com/latest/INT/BlueprintAPI/Physics/index.html

https://docs.unrealengine.com/latest/INT/BlueprintAPI/Physics/Components/RadialForce/index.html

https://docs.unrealengine.com/latest/KOR/Resources/ContentExamples/Physics/1_3/index.html

https://forums.unrealengine.com/showthread.php?29496-Addforce-and-addimpulse

AddForce accounts for delta time and should be used for applying force over more than one frame, AddImpulse does not account for delta time and should be used for single 'pushes', like from an explosion or being thrown by a player. The reason is that if you use AddForce for throwing or an explosion, how far the object moves depends on the framerate at the exact frame the force was applied, rather than being independent of framerate like AddImpulse is

Destructible_Troubleshooting_Guide

https://wiki.unrealengine.com/Destructible_Troubleshooting_Guide

NVIDIA Apex

https://developer.nvidia.com/apex-destruction-physxlab-tutorials

ue4 fracture 는 1depth 가능

apex 는 5depth 가능

Demolition Master

http://www.andvfx.com/demolition-master/

# ue4에서는 메쉬 애니메이션 bake하지 않고 fbx 애니메이션 익스포트만으로도 애니 데이타가 넘어감.(rootbone 설정은 해줘야 하나의 오브젝트로 됨)

QuickBone Tool 1.0  - mesh animation baking script

http://www.michalorzelek.com/blog/maxscript-quick-bone-tool-1-0/

https://www.youtube.com/watch?v=iQ6HFdP8_C4

Physics Body Reference

https://docs.unrealengine.com/latest/KOR/Engine/Physics/PhysicsBodies/Reference/index.html

Collision Response Reference

https://docs.unrealengine.com/latest/INT/Engine/Physics/Collision/Reference/index.html

Using the OnHit Event in Blueprints

https://docs.unrealengine.com/latest/KOR/Gameplay/HowTo/UseOnHit/Blueprints/index.html

properties

Destructible Settings

>Damage

 Damage Threshold : 메쉬 HP 값

 Damage Spread  : Damage Radius = 데미지 x Damage Spread

 Enable Impact Damage : 부딪치는 오브젝트,프렉쳐등에 충격 데미지 /  무너지는 효과 

 Impact Damage :  Damage = Impact Force x Impact Damage

 Default Impact Damage Depth : Damage Depth

 Custom Impact Resistance : 오브젝트와 충동시 밀어내는 값 

 Impact Resistance : chunks가 물리적 데미지를 입을때 저항값, 낮게 설정하면 관통될수 있다. 

                           충돌 오브젝트  collision preset : PhysicsActor / weight 값 설정.

 -------------------

 Damage Cap : 최대 데미지 총합. 이값 이상의 데미지는 적용되지 않게 되고 파괴되지 않는다.

 Impact Velocity Threshold : 최저 속도 한계치, 한계치 속도 이상이 되어야 파괴.

 Max Chuck Speed : 최대 chunk속도, 낮은값이면 slomotion 처럼 보인다.

 Fracture Impulse Scale :파괴시 chunk 노멀 방향으로 조각난 것을 밀어내는 크기 인수.

>Debris

 잔해 life time min/max , 원점에서 멀어지면 사라지는 거리, valid bounds 크기 설정

>Flags

 Accumulate Damage : 데미지 누산, 여러번 타격 가능.

 Asset Defined Support :  support chunk 설정된 fracture에 nxscene 적용 ?

 World Support : 스태틱 메쉬와 겹치는 부분에 레벨 환경적용. 바닥에 붙거나 벽에 붙는 역할

 Debris Timeout : 잔해 timeout 설정

 Debris Max Seperation : 잔해 원점에서의 최대 거리 설정

 Crumble smallest Chunks : 가장 작은 chunk도 분해 or 삭제

 Accumulate Raycasts : 정확한 collision 검사

 Use Valid Bounds : Valid bounds 사용.

 Form Extended Structures : 겹치는 오브젝트와 하나가 된다.

>Hierarchy Depth

 chunk depth 설정. depth level에 따라 "stick"형태로 된다.

>Effects

  이펙트 추가

>Skeletal Mesh

 재질 설정

>Thumbnail

Fracture Settings

>Voronoi

 Cell Site Count : cell chunk 수

 보로노이 다이아그램

 http://terms.naver.com/entry.nhn?docId=3533967&cid=58541&categoryId=58541&expCategoryId=58541

 3dsmax rayfire voronoi

 https://www.youtube.com/watch?v=Uu2PYfK3HdY

 # fracture import 시 Material 통합문제 현재 해결되지 않았음 -> APEX는 가능.

 https://issues.unrealengine.com/issue/UE-8566

>General

 fracture 재질 uv 설정, random 생성.

Chunk Parameters

>Chunks

 Chunk Params 

 Is Support Chunk : 레벨 환경에 지원

 Do Not Fracture : fracture되지 않음

 Do Not Damage : 데미지 입지 않음

 Do Not Crumble : 부서지지 않음 , 자식이 있는 청크는 자식쪽에서 부서질수 있음.

Destructible Actor Component

Linear Damping : 높을수록 느려짐

Large Chunk Threshold : Fracture 충돌 사이즈. 수치를 높이면 그이하의 덩어리는 플레이어와 충돌하지 않음.

~ console command : pxvis collision

Destructible Troubleshooting Guide

https://wiki.unrealengine.com/Destructible_Troubleshooting_Guide

UE4 Learning Resource Content Creator Tim Hobson

http://timhobsonue4.snappages.com/

https://forums.unrealengine.com/showthread.php?56777-TUTORIALS-Photons-Be-Free-Mini-tutorials-and-other-curiosities

ue4 Apex,rayfire Destructibla mesh tut

https://www.youtube.com/watch?v=HSGCr-xqit0&index=2&list=PLm2aqn-LqKX6VJfACurmJEK7YSwerMIa6

Fracturemesh Chunks location (code)

https://answers.unrealengine.com/questions/102537/get-location-and-rotation-of-a-chunk-destructable.html

epicgames youtube tut

https://www.youtube.com/user/UnrealDevelopmentKit/playlists?shelf_id=0&view=1&sort=dd

https://docs.unrealengine.com/latest/INT/Videos/index.html

PT용 문서

https://www.unrealengine.com/ko/resources

All Tut

https://docs.unrealengine.com/latest/INT/Videos/index.html

Epic Create Content

https://wiki.unrealengine.com/Category:Epic_Created_Content

Color Grading

https://docs.unrealengine.com/latest/KOR/Gameplay/HowTo/UseOnHit/Blueprints/index.html

Circle Gauge Material for UI

https://www.youtube.com/watch?v=0bLBQXP9pWY

vray vector displacement

https://www.youtube.com/watch?v=bv-IXg4nFKk

https://www.youtube.com/watch?v=_Xmxt1wv1SE

Using Retargeted Animations

https://docs.unrealengine.com/latest/KOR/Engine/Animation/AnimationRetargeting/index.html

https://docs.unrealengine.com/latest/KOR/Engine/Animation/RetargetingDifferentSkeletons/index.html

https://docs.unrealengine.com/latest/KOR/Engine/Animation/AnimHowTo/Retargeting/index.html

https://www.youtube.com/watch?v=xy9aLbZLdeA&feature=youtu.be&t=2m35s

animation & riging tools

https://docs.unrealengine.com/latest/INT/Videos/PLZlv_N0_O1gb2ZoKzTApbv3LvhaXJ9elg/index.html

Metaball

https://www.youtube.com/watch?v=HaUAfgrZjlU

https://forums.unrealengine.com/showthread.php?9493-Metaballs-Proof-of-Concept

Mathew Wadstein youtube tutorial (Basic reference)

https://www.youtube.com/channel/UCOVfF7PfLbRdVEm0hONTrNQ

List

https://goo.gl/BeqKvq

several Material 

http://www.tomlooman.com/category/unreal-engine-4/vfx/

outline post process

http://www.tomlooman.com/ue4-outline-post-process/

Translucent material light distance issue

https://answers.unrealengine.com/questions/219141/translucent-material-light-distance.html

in the screenshots Gpu particles effect, but the problem is present and meshes with Translucent material.. The problem is solved in two console commands r.TranslucencyLightingVolumeInnerDistance xxxxxx r.TranslucencyLightingVolumeOuterDistance xxxxxx   but it does not store the entered value and pre restart is necessary to enter them again.

https://docs.unrealengine.com/latest/KOR/Engine/Rendering/LightingAndShadows/LitTranslucency/index.html

# Particle

. particle flicking 문제 >  Particle Bounds 기본값이 1 이기때문에 가까운 거리에도 lod 가 적용됨 

       > Bounds 항목의 Use Fixed Relative Bounding Box 값이 True면 Bounds값을 올려서 해결. False면 가변적으로 빌보드 크기에 맞춰짐.

. Emitter 에서 Vector Field 의 transform은 Emitter의 Transform과 별도로 Local Vector Fileld의 translation 값으로 이동하고  VF Init Rotation 으로 회전

. Color over Life의 Color Picker에서 HSV의 V명도 값을 올리면  Out val의 컬러값 프리뷰에서 오버값에 의한 색상이 gradient되는것을 확인할수 있다.

viewmode

https://docs.unrealengine.com/latest/KOR/Engine/UI/LevelEditor/Viewports/ViewModes/index.html

UE 4.15  - Math Material Node added.

일반적인 연산에 머티리얼 함수나 커스텀 노드를 쓰지 않아도 될 수 있게끔 요청을 자주 받은 수학 머티리얼 노드를 몇 가지 추가했습니다.

Fast 태그 마킹된 노드는 실제 인스트럭션 대신 추정식을 사용합니다. 복잡한 버전의 머티리얼에 비해 퍼포먼스가 향상되지만, 입력상의 제한이나 정밀도가 떨어지는 상쇄 효과가 있습니다.

New!!!

Houdini VFX for Games By Andreas Glad

https://www.pluralsight.com/courses/houdini-vfx-games

vimeo https://vimeo.com/partikel

blog http://www.partikel.co/

http://www.cgsociety.org/news/article/3238/creating-vfx-for-games-with-houdini-artist-andreas-glad-

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Unreal Engine (EPIC)

3rd Person Game with Blueprints (pre. v4.8) 2014.04~2015.10

https://www.youtube.com/playlist?list=PLZlv_N0_O1gZS5HylO_368myr-Kg2ZLwb

Blueprint Node Reference

https://docs.unrealengine.com/latest/INT/BlueprintAPI/index.html

Destructible Mesh Setup (Default FPS game) 

Destructible mesh 생성 > BP 생성> Physics 설정 >배치

https://docs.unrealengine.com/latest/KOR/Gameplay/HowTo/UseOnHit/Blueprints/index.html

https://docs.unrealengine.com/latest/KOR/Engine/Physics/Destructibles/DestructibleProperties/index.html

https://docs.unrealengine.com/latest/INT/Videos/PLZlv_N0_O1gYeJX3xX44yzOb7_kTS7FPM/-gGiEmYj4oE/

https://www.youtube.com/watch?v=njyyH5gG9s4

Vector Field

https://docs.unrealengine.com/latest/KOR/Engine/Rendering/ParticleSystems/Reference/Modules/VectorField/index.html

https://forums.unrealengine.com/showthread.php?2274-ToolTutorial-Vector-Fields-from-splines-in-3ds-Max

VF macro script

https://dl.dropboxusercontent.com/u/1047231/VFShapes.mcr

script error >

-- Error occurred in anonymous codeblock; filename: .....................................

-- Cannot assign to read-only variable: Export

FUNCTION DECLARATIONS  'Export' > change all name 'ExportA'

fixed file 

Ruben Henares-VFShapes.mcr

3dsmax tut 

https://youtu.be/s1brvWy3SYY

Global Vector FieldVolume

Vector Field Volumes are not volumes in the traditional sense. They are created from the Class Viewer, not via a volume!

https://wiki.unrealengine.com/Global_Vector_Fields_(Tutorial)

Vector Fields Gen tool

http://jangafx.com/

Particles on skelmesh Bone / Surface

https://docs.unrealengine.com/latest/INT/Engine/Rendering/ParticleSystems/Reference/Modules/Location/#skeletalmeshvertex/surfacelocation_skelvert/surfloc_

tutorial

https://youtu.be/-pyTw-45Mfw