https://github.com/rob1997/grounder

Ik Grounder Based on Unity's Package Animation Rigging
https://github.com/rob1997/grounder

Last synced: 8 months ago
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Ik Grounder Based on Unity's Package Animation Rigging

• Host: GitHub
• URL: https://github.com/rob1997/grounder
• Owner: rob1997
• License: mit
• Created: 2022-08-19T08:15:45.000Z (almost 4 years ago)
• Default Branch: dev
• Last Pushed: 2022-08-19T10:49:34.000Z (almost 4 years ago)
• Last Synced: 2025-04-11T18:03:18.476Z (about 1 year ago)
• Language: C#
• Size: 10.7 KB
• Stars: 27
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Grounder

Ik Grounder Based on Unity's Package Animation Rigging

## Setup

1. Import Animation Rigging Package From the Package Manager 


![image](https://user-images.githubusercontent.com/36323674/185576882-38e531f1-6f07-496b-b79b-d2507ffc4ddc.png)

2. Put a Rig Builder Component on Your Bipedal GameObject 


![image](https://user-images.githubusercontent.com/36323674/185576773-55a0748a-8668-4c49-95a2-41a36f8ba9f8.png)

3. Set Up Ik Rig 


One Ik Rig (Child of Bipedal GameObject) with Three Constraints as Children 


![image](https://user-images.githubusercontent.com/36323674/185577494-3a9944a3-819f-47e9-8b30-9fb15d2bc12e.png) 


![image](https://user-images.githubusercontent.com/36323674/185577419-9b9184c2-bca3-4499-8bf3-6b1376235bac.png) 


Reference Foot Ik Rig in Rig Builder from Step 2

4. Set Up Two Bone Constraints for Each Leg 


![image](https://user-images.githubusercontent.com/36323674/185577673-d3f7f290-86a9-4915-bfb3-7db7b6b16bab.png) 


![image](https://user-images.githubusercontent.com/36323674/185577708-d8faa40f-e90d-467f-990c-b827bab6f68e.png) 


![image](https://user-images.githubusercontent.com/36323674/185577746-01f49ce1-45e0-4933-bdc5-cda54bd13676.png) 


**THE ORDER OF COMPONENTS AND GAMEOBJECTS MUST MATCH FOR THE CORRECT ORDER OF EXECUTION** 


Extact Transform Constraint Must Always Preceed Two Bone/Multi Position Constraint and Pelvis Constraint GameObject Must Always Preceeed Two Bone Ik Constraints Objects, This Matters because of the Burst Compiler Execution Order 


Set Hint Weight on Both Two Bone Ik Component to 0, to stop Leg Bending in unwanted way 


5. Set Foot Forward For Feet (Create A Transform Under Each Ik Constraint Facing the Forward of Foot, Used for Relative IK Rotation) 


![image](https://user-images.githubusercontent.com/36323674/185579266-171c9769-57f9-4e30-bc95-7dbc0f8051c6.png)


![image](https://user-images.githubusercontent.com/36323674/185579315-8b20f593-df76-4ec8-9990-1775187e51b8.png)


6. Set Up Grounder on Bipedal Object (where Animator Component is) 


![image](https://user-images.githubusercontent.com/36323674/185579534-0a8c8e0f-5207-4a00-8167-0780f132bc0a.png) 


**Bonus**. You Can setup Animation Curves of "LeftFootUp" and "RighFootUp" for optimal Ik Rotation, Foot only rotates to Surface When It's on Ground! 


![image](https://user-images.githubusercontent.com/36323674/185580086-1127a1a5-4c53-4e95-9d07-e3d4bc1a2cd3.png) 


![image](https://user-images.githubusercontent.com/36323674/185580258-80019459-22fe-47d7-96eb-2c0d37a5c976.png)