Unity3D --//通过射线判断角色是否在地面

ゝ一世哀愁。 2022-05-10 01:20 350阅读 0赞

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class PlayerContro : MonoBehaviour {
    
        public float speed;
        public Animator myAnimator;
        public SpriteRenderer spriteRenderer;
        // Use this for initialization
        private bool isGround = false;
        private Rigidbody2D myRigidbody2D;
        void Start () {
            myAnimator = GetComponent<Animator>();
            myRigidbody2D = GetComponent<Rigidbody2D>();
        }
    	
    	// Update is called once per frame
    	void Update () {
            float x = Input.GetAxis("Horizontal");
    
            //旋转逻辑
            if (x >0)
            {
                spriteRenderer.flipX = false;
            }
            else if(x < 0)
            {
                spriteRenderer.flipX = true;
            }
    
            //角色是否在地面
            Debug.DrawRay(transform.position, Vector2.down * 0.11f, Color.red);
            RaycastHit2D hit = Physics2D.Raycast(transform.position, Vector2.down, 0.15f, 1 << 8);
            if (hit.collider != null)
            {
                isGround = true;
            }
            else
            {
                isGround = false;
            }
    
            //角色状态
            if (!isGround)//角色没有与地面接触
            {
                //  myAnimator.SetInteger("player_state", 2);
                myAnimator.Play("jump");
            }
            else //校色与地面接触
            {
                 if (x == 0)
                {
                    //    myAnimator.SetInteger("player_state", 0);
                    myAnimator.Play("idle");
                }
                else
                {
                    //   myAnimator.SetInteger("player_state", 1);
                    myAnimator.Play("run");
    
                }
            }
           
    
            //角色行为控制
            transform.Translate(Vector3.right*x*Time.deltaTime*speed);
            // myRigidbody2D.velocity = Vector2.right * x * speed;
            // myRigidbody2D.MovePosition(Vector2.right*x*Time.deltaTime*speed);
    
            // myRigidbody2D.MovePosition(myRigidbody2D.position + Vector2.right * speed * Time.deltaTime * x);
            // Vector2 vector2 = new Vector2(1, 0.0f) * speed * x;
            // myRigidbody2D.velocity = vector2;
          
            if (Input.GetKeyDown("space"))
            {
                if (isGround)
                {
                    myRigidbody2D.AddForce(Vector2.up * 180);
                }
              
            }
        }
    
    }