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Question by DinozSayRAWR · Jan 29, 2016 at 12:27 AM · c#ragdollsimulationrigidbody.addforceinertia

Simulate Inertia - within the Joints of the Ragdoll's Rigidbodies - Based on the Movement of the Whole Body

Hi,

Here's a video referencing what I'm trying to achieve - https://www.youtube.com/watch?v=zYj1iqjsvTY - It's a simulation of inertia using ragdoll rigidbodies.

Using Unity's built-in ragdoll system I've been able to achieve this thus far - https://www.youtube.com/watch?v=DEvj_1kurKM - hopefully I'm on the right track but as you can tell the simulation of inertia is not properly set - the arms & legs don't fully simulate the inertia movement of the player (like in the video reference in the first paragraph), and that is my objective.

To my understanding what needs to be done to simulate inertia movement on a ragdoll's rigidbodies is intuitively add force to the joints that is proportionally inverted to the movement applied to the whole body.

Would it be possible for someone to point me in the direction to achieve this simulation, the gentleman who uploaded the video reference in the first paragraph said it's all done through code.

Here's how I approached the script, which I then attached to the upper leg , I figured if I can get it to work for one joint then the formula would be the same for the rest of the joints such as lower leg etc.

Code : FixedUpdate() { Rigidbody.AddForce (-WholeBody.transform.position * thrust);

This didn't appear to work for me though as the rigidbody started to warp cause the mesh to warp.

In conclusion I'd like to highlight a few things :

The gameobject is set up as Player, which itself is empty but contains scripts for movement, the actual player mesh model is a child gameobject of Player empty gameobject.

The child gameobject - actual player mesh model has the ragdoll component set up so "Wholebody" in the code above is referring to the empty gameobject Player which is the Parent.

"Wholebody" is merely a place holder for GameObject.FindGameObjectWithTag("Player").transform.position.

Salute!

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