TakeMyHand.cs

using System;
using UdonSharp;
using UnityEngine;
using UnityEngine.UI;
using VRC.SDKBase;
using VRC.Udon;

public class TakeMyHand : UdonSharpBehaviour
{
    VRCPlayerApi[] players = new VRCPlayerApi[0];
    VRCPlayerApi connectedPlayerRH = null;
    VRCPlayerApi connectedPlayerLH = null;

    void Start()
    {
        // Networking.LocalPlayer.SetJumpImpulse(8.0f);
    }

    float Max(float x1, float x2)
    {
        return x1 < x2 ? x2 : x1;
    }

    void Update()
    {
        var localPlayer = Networking.LocalPlayer;

        var handRH = Input.GetAxis("Oculus_CrossPlatform_SecondaryHandTrigger");
        var indexRH = Input.GetAxis("Oculus_CrossPlatform_SecondaryIndexTrigger");
        var inputRH = Max(handRH, indexRH);

        var handLH = Input.GetAxis("Oculus_CrossPlatform_PrimaryHandTrigger");
        var indexLH = Input.GetAxis("Oculus_CrossPlatform_PrimaryIndexTrigger");
        var inputLH = Max(handLH, indexLH);

        if (inputRH == 0.0f && connectedPlayerRH != null)
        {
            connectedPlayerRH = null;
            localPlayer.SetVelocity(new Vector3());
        }
        else if (inputRH == 1.0f && connectedPlayerRH == null)
        {
            var pRH = localPlayer.GetBonePosition(UnityEngine.HumanBodyBones.RightHand);
            VRCPlayerApi nearestPlayer = null;
            double nearestDistance = 0.0;

            for (int i = 0; i < players.Length; ++i)
            {
                var player = players[i];

                if (player.isLocal)
                {
                    continue;
                }

                var pLH = player.GetBonePosition(UnityEngine.HumanBodyBones.LeftHand);
                var distance = Vector3.Distance(pRH, pLH);

                if (nearestPlayer == null || distance < nearestDistance)
                {
                    nearestPlayer = player;
                    nearestDistance = distance;
                }
            }

            if (nearestDistance < 0.3)
            {
                connectedPlayerRH = nearestPlayer;
            }
        }

        if (inputLH == 0.0f && connectedPlayerLH != null)
        {
            connectedPlayerLH = null;
            localPlayer.SetVelocity(new Vector3());
        }
        else if (inputLH == 1.0f && connectedPlayerLH == null)
        {
            var pLH = localPlayer.GetBonePosition(UnityEngine.HumanBodyBones.LeftHand);
            VRCPlayerApi nearestPlayer = null;
            double nearestDistance = 0.0;

            for (int i = 0; i < players.Length; ++i)
            {
                var player = players[i];

                if (player.isLocal)
                {
                    continue;
                }

                var pRH = player.GetBonePosition(UnityEngine.HumanBodyBones.RightHand);
                var distance = Vector3.Distance(pRH, pLH);

                if (nearestPlayer == null || distance < nearestDistance)
                {
                    nearestPlayer = player;
                    nearestDistance = distance;
                }
            }

            if (nearestDistance < 0.3)
            {
                connectedPlayerLH = nearestPlayer;
            }
        }

        if (connectedPlayerRH != null)
        {
            var p0 = localPlayer.GetBonePosition(UnityEngine.HumanBodyBones.RightHand);
            var p1 = connectedPlayerRH.GetBonePosition(UnityEngine.HumanBodyBones.LeftHand);
            var v1 = connectedPlayerRH.GetVelocity();
            localPlayer.SetVelocity(Vector3.ClampMagnitude(p1 - p0, 0.3f) * 50.0f + v1);
        }
        else if (connectedPlayerLH != null)
        {
            var p0 = localPlayer.GetBonePosition(UnityEngine.HumanBodyBones.LeftHand);
            var p1 = connectedPlayerLH.GetBonePosition(UnityEngine.HumanBodyBones.RightHand);
            var v1 = connectedPlayerLH.GetVelocity();
            localPlayer.SetVelocity(Vector3.ClampMagnitude(p1 - p0, 0.3f) * 50.0f + v1);
        }
    }

    public override void OnPlayerJoined(VRCPlayerApi player)
    {
        var newPlayers = new VRCPlayerApi[players.Length + 1];
        players.CopyTo(newPlayers, 0);
        newPlayers[players.Length] = player;
        players = newPlayers;
    }

    public override void OnPlayerLeft(VRCPlayerApi player)
    {
        VRCPlayerApi[] newPlayers = new VRCPlayerApi[players.Length - 1];
        int src, dst;

        for (src = 0, dst = 0; src < players.Length; )
        {
            if (players[src].playerId != player.playerId)
            {
                newPlayers[dst] = players[src];
                ++dst;
            }

            ++src;
        }

        players = newPlayers;
    }
}