VRCPlusDoubleJump

VRCPlusDoubleJump.cs

/*
 * Double Jump System for VRChat (UdonSharp)
 * 
 * Requirements:
 * - VRC SDK 3.10.3 or later
 *   (Uses VRCPlayerApi.isVRCPlus)
 *
 * This code is released into the public domain.
 * You can use, modify, and distribute it freely without restriction.
 * No warranty is provided.
 */
using UdonSharp;
using UnityEngine;
using VRC.SDKBase;
using VRC.Udon.Common;

public class VRCPlusDoubleJump : UdonSharpBehaviour
{
    [Header("通常ジャンプ")]
    public float normalJumpImpulse = 3f;

    [Header("二段目の上向き速度")]
    public float doubleJumpVelocity = 3f;

    private VRCPlayerApi localPlayer;
    private bool canDoubleJump = true;
    private bool wasGrounded;

    void Start()
    {
        localPlayer = Networking.LocalPlayer;
        if (localPlayer == null) return;

        localPlayer.SetJumpImpulse(normalJumpImpulse);
        wasGrounded = localPlayer.IsPlayerGrounded();
    }

    void Update()
    {
        if (localPlayer == null) return;

        bool grounded = localPlayer.IsPlayerGrounded();

        if (grounded && !wasGrounded)
        {
            canDoubleJump = true;
        }

        wasGrounded = grounded;
    }

    public override void InputJump(bool value, UdonInputEventArgs args)
    {
        if (localPlayer == null) return;
        if (!value) return; // 押した瞬間だけ

        // VRC+ 以外は二段目を禁止
        if (!localPlayer.isVRCPlus) return;

        // 地上では通常ジャンプに任せる
        if (localPlayer.IsPlayerGrounded()) return;

        // 1回だけ許可
        if (!canDoubleJump) return;

        Vector3 vel = localPlayer.GetVelocity();
        vel.y = doubleJumpVelocity;
        localPlayer.SetVelocity(vel);

        canDoubleJump = false;
    }
}