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Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.
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Not able to Run PyBullet c# binding inside Unity #1354

Closed balajiraghuram92 closed 6 years ago

balajiraghuram92 commented 6 years ago

Hi,

Not able to Run PyBullet c# binding inside Unity.

Always getting DllNotFoundException "pybullet_vs2010_x64_release.dll" not found.

Even after placing the Dll in the Plugins Folder inside Unity.

When Changing in Native.cs from "pybullet_vs2010_x64_release.dll" to "pybullet_vs2010_x64_release" getting failed to load "pybullet_vs2010_x64_release.dll" with error the Specified Module could not be found.

balajiraghuram92 commented 6 years ago

Fixed the Issue by placing the Python36.dll into plugins folder

erwincoumans commented 6 years ago

Thanks for the report. Note that those bindings are a starting point: we need some way to create companion Unity graphics objects (when loading a URDF from pybullet) and create a pybullet collder/multibody when using the Unity GUI to create a rigid body. In addition, some 'convenience' layer in C# so it behaves similar to pybullet Python would make it a bit easier to use.

balajiraghuram92 commented 6 years ago

Hi,

Loading of URDF needs a path or some address,because when i try to load always get "cmd_URDF_Load_Failed".

Replicating the Pybullet in Unity is Hard as we have to Just Give the Physics support only ,all the rendering and Loading of Object are maintaned by itself.

So we got to find some way sending the Graphics data to Pybullet and Getting URDF data & physics from PyBullet.

Searching in the Bullet Physics Code base to figure out how can we achive this.

Thanks for the Extention of PyBullet for Unity.

erwincoumans commented 6 years ago

Copy the data folder next to the plugin (pybullet_vs2010_x64_release.dll) so the URDF file can be loaded. Alternatively, use the b3SetAdditionalSearchPath to point to the Bullet/data folder.

We can use Bullet Unity plugin to figure out how to create Unity graphics objects and how to synchronize the transforms.

erwincoumans commented 6 years ago

Here is the updated script that also gets the position/orientation of a cube, sets gravity etc: https://github.com/bulletphysics/bullet3/blob/master/examples/pybullet/unity3d/examples/NewBehaviourScript.cs Video of the script running in Unity, with external ExampleBrowser as 'debug visualizer': https://www.youtube.com/watch?v=81dthrVI2vs