Unity 2D - 为什么按钮不起作用？

Question

OP弄明白了，缺少EventSystem对象

我用Unity制作了一款跑步游戏。但我遇到了一个大问题。我做了一个按钮来跳转并添加onclick事件，但是，它不起作用。我的跑者不会跳到地上。请帮帮我！

按钮和按钮检查器。

Runner Inspector。

OnClick Inspector。

这是Runner的C＃脚本：

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

    public class CsRunner : MonoBehaviour
    {
        public Vector2 jumpVelocity;
        public Text _coin;
        int coinCount = 0, heartCount, healthCount = 0, grimReaperCount = 0, coupleCount = 0;
        bool isJump;
        public Button _jump;

        bool collision_box;

        // Use this for initialization
        void Start()
        {
            _jump.onClick.AddListener(Jump);
            heartCount = 3;
        }

        // Update is called once per frame
        void Update()
        {
            _coin.text = ""+coinCount;
        }

        void OnTriggerEnter2D(Collider2D coll)
        {
            if (coll.transform.tag == "Enemy")
            {
                if (heartCount > 1)
                    Destroy(GameObject.Find("heart ("+(heartCount-1)+")"));

                else if (heartCount == 1)
                    Destroy(GameObject.Find("heart"));

                heartCount--;
            }

            if (coll.transform.tag == "HealthBuff")
            {
                Destroy(coll.gameObject);
                healthCount++;
            }

            if (coll.transform.tag == "GrimReaperBuff")
            {
                Destroy(coll.gameObject);
                grimReaperCount++;
            }

            if (coll.transform.tag == "CoupleBuff")
            {
                Destroy(coll.gameObject);
                coupleCount++;
            }

            if (coll.transform.tag == "FieldCoin")
            {
                Destroy(coll.gameObject);
                coinCount++;
            }
        }


        void OnCollisionEnter2D(Collision2D coll)
        {
            if (coll.transform.tag == "Ground")
            {
                GetComponent<Animator>().enabled = true;
                collision_box = true;
                isJump = false;
            }
        }

        void OnCollisionStay2D(Collision2D coll)
        {
            if (coll.transform.tag == "Ground")
            {
                GetComponent<Animator>().enabled = true;
                collision_box = true;
                isJump = false;
            }
        }

        void OnCollisionExit2D(Collision2D coll)
        {
            if (coll.transform.tag == "Ground")
            {
                GetComponent<Animator>().enabled = false;
                collision_box = false;
                isJump = true;
            }
        }

        public void Jump()
        {
            Debug.Log("JUMP!!");

            if (isJump)
            {
                isJump = false;
                transform.GetComponent<Rigidbody2D>().AddForce(jumpVelocity / 2, ForceMode2D.Impulse);
            }

            if (collision_box)
            {
                isJump = true;
                transform.GetComponent<Rigidbody2D>().AddForce(jumpVelocity, ForceMode2D.Impulse);
            }

            else
            {
                GetComponent<Animator>().SetTrigger("Run");
            }
        }
    }

谢谢！

Answer 1

我解决了这个问题!! Canvas对象没有EventSystem !!谢谢大家：）