slambb_smartbow-infrared/Assets/BowArrow/Scripts/Game/CrossHairOutBoundChecker1.cs

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

/* 检测器-检测游戏射击准心是否出屏幕边界 （打鸭子、塔防关卡、水果大人） */
public class CrossHairOutBoundChecker1 : MonoBehaviour
{
    [SerializeField] GameObject outTip;
    string[] tips = null;
    int tipIndex = -1;

    void Awake()
    {
        outTip.SetActive(false);
    }

    void Start() {
        tips = new string[]{
            TextAutoLanguage2.GetTextByKey("game_crosshair_outbound_0"),
            TextAutoLanguage2.GetTextByKey("game_crosshair_outbound_1"),
            TextAutoLanguage2.GetTextByKey("game_crosshair_outbound_2"),
            TextAutoLanguage2.GetTextByKey("game_crosshair_outbound_3"),
        };
    }

    void Update()
    {
        int newTipIndex = GetNetTipIndex();
        if (newTipIndex != tipIndex) {
            tipIndex = newTipIndex;
            if (tipIndex >= 0) {
                outTip.GetComponent<Text>().text = tips[tipIndex];
            }
        }
        if (newTipIndex >= 0) {
            if (!outTip.activeSelf) outTip.SetActive(true);
        } else {
            if (outTip.activeSelf) outTip.SetActive(false);
        }
    }

    [SerializeField] public RectTransform crossHair;
    public System.Func<int> FetchOutBoundIndex;
    int GetNetTipIndex()
    {
        if (crossHair)
        {
            if (crossHair.gameObject.activeInHierarchy)
            {
                Vector3 pos = crossHair.position;
                if (pos.x < 3)
                {
                    return 0;
                }
                if (pos.x > Screen.width - 3)
                {
                    return 1;
                }
                if (pos.y > Screen.height - 3)
                {
                    return 2;
                }
                if (pos.y < 3)
                {
                    return 3;
                }
            }
        }
        else if (FetchOutBoundIndex != null)
        {
            return FetchOutBoundIndex.Invoke();
        }
        return -1;
    }
}