2D小游戏--猜对应卡牌(unity)

博客地址：https://www.cnblogs.com/zylyehuo/

项目名称 guess_card_game

参考源码链接：
https://www.manning.com/books/unity-in-action

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效果图预览

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step1: 创建一个3D项目

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step2: 修改2D相关设置

点击Edit/Project Settings 再选择Editor选项 修改Default Behaviour Mode的Mode为2D

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修改选项卡为2D模式

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step3: 准备工作

创建需要的文件夹

记住场景名字

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在Sprites文件夹下准备相应的图片

卡牌图案： 150*200px

卡背： 能盖住卡牌即可

重置按钮： 无要求

背景： 无要求

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step4: 相关代码

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MemoryCard.cs

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

public class MemoryCard : MonoBehaviour
{
    [SerializeField] private GameObject cardBack;
    public void OnMouseDown()
    {
        if (cardBack.activeSelf && controller.canReveal) {
            cardBack.SetActive(false);
            controller.CardRevealed(this);
        }
    }

    public void Unreveal() {
        cardBack.SetActive(true);
    }

    [SerializeField] private SceneController controller;
    private int _id;
    public int id
    {
        get { return _id; }
    }
    public void SetCard(int id, Sprite image)
    {
        _id = id;
        GetComponent<SpriteRenderer>().sprite = image;
    }

    // Start is called before the first frame update
    void Start()
    {

    }
    // Update is called once per frame
    void Update()
    {

    }

}

SceneController.cs

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

public class SceneController : MonoBehaviour
{
    public const int gridRows = 2;
    public const int gridCols = 4;
    public const float offsetX = 2;
    public const float offsetY = 2.5f;

    private MemoryCard _firstRevealed;
    private MemoryCard _secondRevealed;
    private int _score = 0;
    public bool canReveal {
        get { return _secondRevealed == null; }
    }

    [SerializeField] private MemoryCard originalCard;
    [SerializeField] private Sprite[] images;
    [SerializeField] private TextMesh scoreLabel;

    public void CardRevealed(MemoryCard card) {
        if (_firstRevealed == null)
        {
            _firstRevealed = card;
        }
        else {
            _secondRevealed = card;
            StartCoroutine(CheckMatch());
        }
    }

    private IEnumerator CheckMatch() {
        if (_firstRevealed.id == _secondRevealed.id)
        {
            _score++;
            Debug.Log("Score:" + _score);
        }
        else {
            yield return new WaitForSeconds(.5f);
            _firstRevealed.Unreveal();
            _secondRevealed.Unreveal();
        }

        _firstRevealed = null;
        _secondRevealed = null;
    }

    // Start is called before the first frame update
    void Start()
    {
        Vector3 startPos = originalCard.transform.position;

        int[] numbers = {0, 0, 1, 1, 2, 2, 3, 3 };
        numbers = ShuffleArray(numbers);

        for (int i = 0; i < gridCols; i++) {
            for (int j = 0; j < gridRows; j++) {
                MemoryCard card;
                if (i == 0 && j == 0)
                {
                    card = originalCard;
                }
                else {
                    card = Instantiate(originalCard) as MemoryCard;
                }

                int index = j * gridCols + i;
                int id = numbers[index];
                card.SetCard(id, images[id]);

                float posX = (offsetX * i) + startPos.x;
                float posY = - (offsetY * j) + startPos.y;
                card.transform.position = new Vector3(posX,posY,startPos.z);
            }
        }

    }

    private int[] ShuffleArray(int[] numbers) {
        int[] newArray = numbers.Clone() as int[];
        for (int i = 0; i < newArray.Length; i++) {
            int tmp = newArray[i];
            int r = Random.Range(i,newArray.Length);
            newArray[i] = newArray[r];
            newArray[r] = tmp;
        }
        return newArray;
    }

    // Update is called once per frame
    void Update()
    {

    }
}

UIButton.cs

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

public class UIButton : MonoBehaviour
{
    [SerializeField] private GameObject targetObject;
    [SerializeField] private string targetMessage;
    public Color highlightColor = Color.cyan;
    public void OnMouseEnter()
    {
        SpriteRenderer sprite = GetComponent<SpriteRenderer>();
        if (sprite != null)
        {
            sprite.color = highlightColor;
        }
    }
    public void OnMouseExit()
    {
        SpriteRenderer sprite = GetComponent<SpriteRenderer>();
        if (sprite != null)
        {
            sprite.color = Color.white;
        }
    }

    public void OnMouseDown()
    {
        transform.localScale = new Vector3(1.1f, 1.1f, 1.1f);
    }
    public void OnMouseUp()
    {
        transform.localScale = Vector3.one;
        if (targetObject != null)
        {
            targetObject.SendMessage(targetMessage);
        }
    }

    // Start is called before the first frame update
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {

    }
}

step5: 创建场景及对象

1、将背景从Project中拖到场景中

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2、选择一张卡牌作为对象，拖到Hierarchy窗口，并修改名称为 Memory Card

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3、将卡背拖到Memory Card下方作为子对象

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4、创建空对象，依次修改名称

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5、脚本挂载

Memory Card

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card_back

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Controller

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Score

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start-button

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