Rigidbody Launcher

Launch an object with collision against the world

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📦 Add to VRChat Creator Companion

How it works

• A configurable joint is connected to a world-constrained kinematic rigidbody and given velocity on the Z-axis.
• The joint has collision and stops against the world.
• A particle system under the joint dies with collision, causing a particle stop action disable, triggering a contact-driven parameter change.

Install guide

https://github.com/VRLabs/Rigidbody-Launcher/assets/76777936/9f288264-7a4b-4790-b6c3-38a1180a3ea5

• Merge the Animator Controller Rigidbody Launcher FX to your own FX Controller, using the Avatars 3.0 Manager tool.
• Drag & drop the Rigidbody Launcher prefab into the base of your Hierarchy.
• Right click and unpack the prefab, then drag & drop it onto your avatar.
• Move Rigidbody Launcher Target outside of Rigidbody Launcher and place it anywhere in your avatar's hierarchy. Adjust the transforms as needed.

How to use

• Place the objects you want to to use inside Rigidbody Launcher -> Container.
  • Alternatively you can constrain the objects to Container.
• RigidbodyLauncher/Control parameter must be true for the system to fire, and false to reset.
• To change speed, you can edit the Launcher Fire.anim animation clip and change the Target Velocity. You need to use a negative value.
  • You can also change the Maximum Force property under the X/Y/Z Drive sections of the Rigidbody Launcher/Kinematic Rigidbody/Collision configurable joint.
  • Other properties of the joint on Collision are editable depending on the rigidbody motion you want to achieve.
• To launch the rigidbody perfectly straight, freeze rotation for XYZ on the Collision rigidbody (not the configurable joint), and set the X and Y motion on the Collision configurable joint as locked.
  • This will make it so only Z-axis motion is possible.

Performance stats

Audio Sources:      2
Colliders:          1
Constraints:        4
Constraint Depth:   4
Contact Receivers:  1
Contact Senders:    1
FX Animator Layers: 2
Lights:             1
Particle Systems:   1
Rigidbodies:        3

Hierarchy layout

Rigidbody Launcher
|-Container
|  |-Cube
|  |  |-Point Light
|  |-Collision Audio
|  |-Fire Audio
|-Kinematic Rigidbody
|  |-Collision
|  |  |-Box Collider
|  |  |-Contact
|-Rigidbody Launcher Target

Contributors

• lin

License

Rigidbody Launcher is available as-is under MIT. For more information see LICENSE.

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