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

public class RaycastTest : MonoBehaviour
{
    RaycastHit2D hitToBite;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        hitToBite = Physics2D.Raycast (new Vector2(transform.position.x, transform.position.y), Vector2.right);
  if (hitToBite != null){
   Debug.DrawLine(new Vector2(transform.position.x, transform.position.y), Vector2.right, Color.yellow);
  }
    }
}

Physics2D.Raycast (new Vector2(transform.position.x, transform.position.y), Vector2.right);

hit = Physics2D.Raycast (new Vector2(this.transform.position.x, this.transform.position.y), Vector2.right, 15.0f, 0);
  if (hit)
  {
   Debug.DrawLine(new Vector2(this.transform.position.x, this.transform.position.y), hit.point, Color.green);
  }
  else
  {
   Debug.DrawRay(new Vector2(this.transform.position.x, this.transform.position.y), Vector2.right * 15.0f, Color.red);
  }

hit = Physics2D.Raycast (new Vector2(this.transform.position.x, this.transform.position.y), Vector2.right, RayLenght, 0, -1, 1);
  Debug.Log("Hit with: " + hit.collider.name);

NullReferenceException: Object reference not set to an instance of an object

if (Input.GetMouseButtonDown (0)){
  _anim.SetTrigger("fire");
  WeaponAudioSource.PlayOneShot(ShootSound);    
  }else{
  _anim.SetTrigger("idle");
  }

float CameraRotate = Input.GetAxis("Mouse X") * MouseSensitivity * Time.deltaTime;
  Quaternion deltaRotation = Quaternion.Euler(0.0f, 0.0f, CameraRotate);
  HeroBody.MoveRotation(HeroBody.rotation * deltaRotation);

Operator '*' cannot be applied to operands of type 'float' and 'Quaternion'

RotateAmountX += Input.GetAxis("Mouse X") * MouseSensitivity * Time.deltaTime;    
  RotateAmountY = Input.GetAxis("Mouse Y")* MouseSensitivity * Time.deltaTime;
  if (RotateAmountX > 0.07f){
   RotateAmountX= 0.07f;
  }
  if (RotateAmountX < -0.07f){
   RotateAmountX = -0.07f;
  }
        transform.Translate(RotateAmountX, RotateAmountY, 0.0f );

public class HeroMove : MonoBehaviour {

    CharacterController HeroCharacter;
    public float MinimalWalkSpeed, MaximalWalkSpeed;
    private float Speed;
    
    private float _gravity;

    void Start () {
  HeroCharacter = GetComponent<CharacterController>();
  //Прописываем скорости минимальное значение;
  Speed = MinimalWalkSpeed;
    }
    
    void Update () {
  MoveHero();
  GravityCheck();
  //Debug.Log(Speed);
  Debug.Log(HeroCharacter.isGrounded);
    }
    
  void GravityCheck(){
  //Гравитация;
  HeroCharacter.transform.position -= Vector3.down * _gravity;
  if(!HeroCharacter.isGrounded){
   _gravity -= 0.01f * Time.deltaTime;
  }
  if(HeroCharacter.isGrounded){
   _gravity = 0.0f;
  }
    }
    
    void MoveHero() {
  //Ускорение с минимальной скорости, до максимальной;
  if (Input.GetKey(KeyCode.W) || Input.GetKey(KeyCode.A) || Input.GetKey(KeyCode.S) || Input.GetKey(KeyCode.D)){
   if (Speed < MaximalWalkSpeed){
    Speed+= 0.7f*Time.deltaTime;
   }
  }
  //Бинд клавиш и движения;
  if (Input.GetKey(KeyCode.W)){
   HeroCharacter.transform.position += HeroCharacter.transform.forward * Speed * Time.deltaTime;
  }
  if (Input.GetKey(KeyCode.S)){
   HeroCharacter.transform.position -= HeroCharacter.transform.forward * Speed * Time.deltaTime;
  }
  if (Input.GetKey(KeyCode.A)){
   HeroCharacter.transform.position -= HeroCharacter.transform.right * Speed * Time.deltaTime;
  }
  if (Input.GetKey(KeyCode.D)){
   HeroCharacter.transform.position += HeroCharacter.transform.right * Speed * Time.deltaTime;
  }
    }
}