Hi I am using a rigidbody component attached to my game Object and I don't want to disable gravity but the game object keeps on falling. Moreover the enemy capsule just falls below the ground in my game. Im a little new to unity. The game I am making is with the help of the (Learning c# by developing games unity 2021) this is the 6th version. The script for the player behaviour is:

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

    public class PlayerBehavoiur : MonoBehaviour
    {
        public float MoveSpeed = 10f;
        public float RotateSpeed = 75f;
        public int hp = 0;
        /// <summary>
        /// stores a rigidbody component for a gameobject
        /// </summary>
        private Rigidbody _rb;
        // Start is called before the first frame update
        void Start()
        {
            _rb = GetComponent<Rigidbody>();
            _rb.useGravity = true;
        }
        private float _hInput1;
        private float _vInput1;
        // Update is called once per frame
        void Update()
        {
            /*MoveForward(_hInput1);
            RotateUpWards(_vInput1);
            */
        }
        /*public void MoveForward(float _vInput)
        {
            _vInput = Input.GetAxis("Vertical") * MoveSpeed;
            this.transform.Translate()
        }
        public void RotateUpWards(float _hInput)
        {
            _hInput = Input.GetAxis("Horizontal") * RotateSpeed;
            this.transform.Translate(Vector3.forward * _hInput * Time.deltaTime);
        }
        */
        void FixedUpdate()
        {
            SetVerticalDirection();
            SetHorizontalDirection();
            //makes the object move by horizontal input in the up direction
            Vector3 rotation = Vector3.up * _hInput1;
            /*this is the rotation of the game object 
             * moving up and then going at a fixed frame rate
             */
            Quaternion angleRotation = Quaternion.Euler(rotation * Time.fixedDeltaTime);
            //this takes vertical input and addes the position and makes it move forward
            //the vertical input is the vertical axis whihc moves at a defined rate tht we can define
            _rb.MovePosition(this.transform.position   
                this.transform.forward * _vInput1 * Time.fixedDeltaTime);
            /*the move rotation moves using the rigibody rotation times the 
             * horizontal input times and moves up and rotates at the rotate speed rate
             */
            _rb.MoveRotation(_rb.rotation * angleRotation);
        }
        void SetVerticalDirection()
        {
            _vInput1 = Input.GetAxis("Vertical") * MoveSpeed;
        }
        void SetHorizontalDirection()
        {
            _hInput1 = Input.GetAxis("Horizontal") * RotateSpeed;
        }
        /*Horizontal: ad
         * Vertical: ws
         */
    }

CodePudding user response：

In the Inspector, you can set gravity scale to 0. Or set the mass to 0. If none works, go to the Rigdid Body and use the Constraints and freeze the y position. this will stop it from falling

CodePudding user response：

I am also currently studying this book. You should check the third box in the RigidBody Freeze Rotation.