Unity肉鸽卡牌开发记录02-手牌

功能需求

手牌会在手牌区域内展示给玩家，其主要功能包括：

• 显示卡牌的法术力消耗、名称、卡图、类别、效果、攻击力和生命值（针对怪兽卡）

• 鼠标移动到卡牌上时，卡牌边框高亮，并在屏幕显示卡牌的详情

• 鼠标可以拖拽卡牌，当卡牌被拖拽出卡牌区并松开鼠标时，视为出牌

• 若卡牌没有被拖拽出卡牌区，则不视为出牌

• 预留卡牌被抽取时（类似万智牌的奇迹）、被展示时（通联古咒）、被弃掉时（疯魔）、被使用时（类似炉石传说的战吼）的方法

CardInHand基类

CardInHand基类中主要实现Awake和OnEnable。其中Awake方法中通过GetComponent为各个TextMeshPro变量赋值以便显示卡牌信息，OnEnable方法中则利用多态将card转换为对应的子类并将其信息转换为string赋值给各个TextMeshPro。

另外，CardInHand基类实现IPointerEnterHandler,IPointerExitHandler,IDragHandler,IEndDragHandler,IPointerClickHandler接口，实现其中的方法对鼠标进入、离开、拖拽等做出响应。

其他诸如OnPlayCard方法（当手牌被打出时）交由子类实现。

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

//TODO: 优化卡牌悬停高亮、选中效果
public class CardInHand : MonoBehaviour,IPointerEnterHandler,IPointerExitHandler,IDragHandler,IEndDragHandler,IPointerClickHandler
{
    public Card card;
    public TMPro.TextMeshPro pointCost;
    public TMPro.TextMeshPro cardName;
    public TMPro.TextMeshPro cardType;
    public TMPro.TextMeshPro cardAbility;
    public TMPro.TextMeshPro cardAtk;
    public TMPro.TextMeshPro cardHp;

    virtual protected void Awake()
    {
        pointCost = transform.Find("Cost").GetComponent<TMPro.TextMeshPro>();
        cardName = transform.Find("Name").GetComponent<TMPro.TextMeshPro>();
        cardType = transform.Find("Type").GetComponent<TMPro.TextMeshPro>();
        cardAbility = transform.Find("Ability").GetComponent<TMPro.TextMeshPro>();
        cardAtk = transform.Find("Atk").GetComponent<TMPro.TextMeshPro>();
        cardHp = transform.Find("Health").GetComponent<TMPro.TextMeshPro>();
    }

    virtual protected void OnEnable()
    {
        if(card is Monster)
        {
            Monster monster = (Monster)card;
            pointCost.text = monster.pointCost.ToString();
            cardName.text = monster.cardName;
            cardAbility.text = monster.ability;
            cardAtk.text = monster.atk.ToString();
            cardHp.text = monster.hp.ToString();
            cardType.text = "怪兽~"+CardEnumConvertor.GetInstance().MonsterRaceEnumToString(monster.race) 
                + CardEnumConvertor.GetInstance().MonsterDutyEnumToString(monster.duty);
        }
        if(card is Magic)
        {
            Magic magic = (Magic)card;
            pointCost.text = magic.pointCost.ToString();
            cardName.text = magic.cardName;
            cardAbility.text = magic.ability;
            cardType.text = "魔法";
        }
        if(card is Equipment)
        {
            Equipment equipment = (Equipment)card;
            pointCost.text = equipment.pointCost.ToString();
            cardName.text = equipment.cardName;
            cardAbility.text = equipment.ability;
            cardHp.text = equipment.hp.ToString();
            cardType.text = "装备";
        }
        if(card is Weapon) 
        {
            Weapon weapon = (Weapon)card;
            pointCost.text = weapon.pointCost.ToString();
            cardName.text = weapon.cardName;
            cardAbility.text = weapon.ability;
            cardAtk.text = weapon.atk.ToString();
            cardHp.text = weapon.hp.ToString();
            cardType.text = "武器";
        }
        if(card is Trap)
        {
            Trap trap = (Trap)card;
            pointCost.text = trap.pointCost.ToString();
            cardName.text = trap.cardName;
            cardAbility.text = trap.ability;
            cardAtk.text = "0";
            cardHp.text = trap.hp.ToString();
            cardType.text = "陷阱";
        }
        if(card is Arena)
        {
            Arena arena = (Arena)card;
            pointCost.text = arena.pointCost.ToString();
            cardName.text = arena.cardName;
            cardAbility.text = arena.ability;
            cardAtk.text = "";
            cardHp.text = "";
            cardType.text = "场地";
        }
    }

    /// <summary>
    /// 当牌张被抓起时
    /// </summary>
    virtual protected void OnDrawToHand()
    {

    }

    /// <summary>
    /// 当牌张被展示时
    /// </summary>
    virtual protected void OnRevealed()
    {

    }

    /// <summary>
    /// 当牌张被弃掉时
    /// </summary>
    virtual protected void OnDiscard()
    {

    }

    /// <summary>
    /// 当牌张被打出时
    /// </summary>
    virtual protected void OnPlayCard()
    {
        CardRevealTool.GetInstance().showCardInfo(card, false);
        Debug.Log("打出:"+card.cardName);
    }

    /// <summary>
    /// 当牌张被放逐时
    /// </summary>
    virtual protected void OnExile()
    {

    }

    /// <summary>
    /// 当牌张被洗回牌库时
    /// </summary>
    virtual protected void OnShuffleBack()
    {

    }

    /// <summary>
    /// 当鼠标悬停在卡牌上时：展示卡牌详情
    /// </summary>
    /// <param name="eventData"></param>
    virtual public void OnPointerEnter(PointerEventData eventData)
    {
        transform.Find("Background").GetComponent<SpriteRenderer>().color = Color.yellow;
        CardRevealTool.GetInstance().showCardInfo(card, true);
    }

    /// <summary>
    /// 当鼠标从卡牌上移开时：取消展示卡牌详情
    /// </summary>
    /// <param name="eventData"></param>
    virtual public void OnPointerExit(PointerEventData eventData)
    {
        CardRevealTool.GetInstance().showCardInfo(card, false);
        transform.Find("Background").GetComponent<SpriteRenderer>().color = new Color32(0,204,253,255);
    }

    /// <summary>
    /// 当鼠标拖拽卡牌时：卡牌随鼠标移动，准备出牌
    /// </summary>
    /// <param name="eventData"></param>
    virtual public void OnDrag(PointerEventData eventData)
    {
        Vector3 temp = Camera.main.ScreenToWorldPoint(Input.mousePosition);
        transform.position = new Vector3(temp.x, temp.y, transform.position.z);
    }

    /// <summary>
    /// 当鼠标停止拖拽卡牌时：判断卡牌位置，如果超出手牌区域即出牌
    /// </summary>
    /// <param name="eventData"></param>
    virtual public void OnEndDrag(PointerEventData eventData)
    {
        if(transform.localPosition.y > 0.5f)
        {
            //TODO: 法术力消耗判断
            transform.SetParent(null);
            CardAreaManager.GetInstance().PlayACard(card);
            OnPlayCard();
            Destroy(gameObject);
        }
        else
        {
            CardRevealTool.GetInstance().ListHand();
        }
    }

    /// <summary>
    /// 当鼠标点击卡牌时：显示卡牌详情+出牌提示(待定)
    /// </summary>
    /// <param name="eventData"></param>
    virtual public void OnPointerClick(PointerEventData eventData)
    {
        
    }
}

各卡牌的InHand类

各张卡牌的InHand类继承CardInHand，新增属性cardId并在Awake方法中通过cardId获取对应的Card（SO）。

示例：StormDragon的InHand类

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

public class StormDragonInHand : CardInHand
{
    public int cardId = 0;

    protected override void Awake()
    {
        base.Awake();
        card = CardAreaManager.GetInstance().AllCardList.cardList[cardId];
    }
}

TODO

• [ ] 优化卡牌悬停高亮、选中效果。