Single Jump | Rigidbody | Unity Game Engine

SingleJump.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

[RequireComponent(typeof(Rigidbody))]
public class SingleJump : MonoBehaviour
{
    public float jumpForce = 5;
    public float groundDistance = 0.5f;

    Rigidbody rigidBody;

    void Awake()
    {
        rigidBody = GetComponent<Rigidbody>();
    }

    bool IsGrounded()
    {
        return Physics.Raycast(transform.position, Vector3.down, groundDistance);
    }

    void Update()
    {
        if(Input.GetMouseButtonDown(0) && IsGrounded())
        {
            rigidBody.velocity = Vector3.up * jumpForce;
        }
    }
}