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Multi-person Motion Capture

You can run the Dollars MoCap program on multiple computers separately, and gather the motion capture results into the same UE scene to achieve multi-character interaction.

Setup​

For instance, if we want to perform motion capture on Computer A (with IP address 192.168.1.3) and Computer B (with IP address 192.168.1.10), and combine the results into the UE scene on Computer A, follow these steps,

Ensure Connectivity​

First, ensure that Computer B can ping Computer A. If the ping is unsuccessful, check the firewall settings on Computer A.

Running Dollars MoCap​

On Computer A, we run the Dollars MoCap program as usual.

On Computer B, after running the Dollars MoCap program, we open the options dialog box, enter the IP of Computer A, 192.168.1.3, in the IP field, and change the UE port to a number other than 39639, for example, 39640.

info

You can also run multiple instances of the Dollars MoCap program on the same computer. In this case, keep the IP as the default local address, 127.0.0.1, and set different port numbers for each instance.

UE Scene Setup​

In the Unreal Engine scene on Computer A, add two instances of the BP_DollarsReceiver Blueprint.

For easy identification, name them BP_DollarsReceiver_A and BP_DollarsReceiver_B.

Select BP_DollarsReceiver_B and change its Port to the number 39640, which is the port number we set earlier on Computer B.

Character Blueprint Setup​

Add two character blueprints into the scene. Name them BP_VRM_A and BP_VRM_B.

In the BP_VRM_A blueprint, set the Dollar Receiver variable to reference the BP_DollarsReceiver_A you've added to the scene.

For BP_VRM_B, you should set the Dollar Receiver variable to reference the BP_DollarsReceiver_B.

At this point, BP_VRM_A is controlled by the motion capture program running on Computer A, and BP_VRM_B is controlled by the motion capture program running on Computer B.

You can download a sample Unreal Engine project with the above setup from the following link:

https://drive.google.com/u/0/uc?id=1EGJmPzi_JL2YCRALKkuhpXTWmZZV0Ckc&export=download