using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement; //記得加這個才能對Scene做操作

public class StartMenu : MonoBehaviour
{
    public void ChangeScene() //記得加public不然等等在加按鈕事件的時候讀不到
    {
        //用LoadScene(buildIndex)來更換目前顯示的Scene
        SceneManager.LoadScene(0); 
    }
}

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

public class EnemyGenerator : MonoBehaviour
{
    [SerializeField] GameObject enemyPrefab; //Enemy的Prefab參考
    bool inGenerateCD = false; //生成是否已冷卻
    private void Update() {
        if(!inGenerateCD){ //如果生成已經冷卻
            StartCoroutine(generate()); //啟動生成敵人的協程(下堂會講)
        }
    }

    IEnumerator generate(){
        inGenerateCD = true; //進冷卻
        Instantiate(enemyPrefab, new Vector3(7.8f, Random.value*5,0),Quaternion.identity); //在x軸7.8、y軸隨機的地方生成一個敵人
        yield return new WaitForSecondsRealtime(Random.value*3); //進入隨機0~3秒的冷卻(等待0~3秒才執行接下來的程式)
        inGenerateCD = false; //冷卻完畢
    }
}

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

public class PlayerRotate : MonoBehaviour
{
    Vector2 dir; //角色->滑鼠方向向量
    void Update()
    {
        dir = Camera.main.ScreenToWorldPoint(Input.mousePosition-transform.position).normalized; //取得方向向量
        transform.up = Vector2.Lerp(transform.up, dir, 0.2f); //漸變方向
    }
}

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

public class PlayerShoot : MonoBehaviour
{
    [SerializeField] GameObject bulletPrefab; //子彈Prefab參考
    bool inCD = false;
    void Update()
    {
        if(Input.GetMouseButtonDown(0) && !inCD){ //按下左鍵時
            Instantiate(bulletPrefab,transform.position,transform.rotation); //涉及
            StartCoroutine(CD()); //冷卻協程
        }
    }

    IEnumerator CD(){
        inCD = true; //進CD
        yield return new WaitForSecondsRealtime(0.5f); //等待0.5秒
        inCD = false; //CD結束
    }
}

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

public class PlayerShoot : MonoBehaviour
{
    [SerializeField] GameObject bulletPrefab; //子彈Prefab參考
    bool inCD = false;
    void Update()
    {
        if(Input.GetMouseButtonDown(0) && !inCD){ //按下左鍵及不在CD時
            Instantiate(bulletPrefab,transform.position,transform.rotation); //涉及
            StartCoroutine(CD()); //冷卻協程
        }
    }

    IEnumerator CD(){
        inCD = true; //進CD
        yield return new WaitForSecondsRealtime(0.1f); //等待0.1秒
        inCD = false; //CD結束
    }
}

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

public class Bullet : MonoBehaviour
{
    float speed = 5; //子彈速度
    [SerializeField] Rigidbody2D rb2D; //子彈剛體參考
    void Start() //被生成時
    {
        StartCoroutine(Delete()); //啟動協程，4秒後刪除自己
    }

    private void Update() {
        rb2D.velocity = transform.up * speed; //指定剛體速度讓子彈飛一會
    }

    IEnumerator Delete(){
        yield return new WaitForSecondsRealtime(4); //等待四秒
        Destroy(gameObject); //刪除自己
    }

    private void OnCollisionEnter2D(Collision2D col) {
        if(col.gameObject.CompareTag("Obstacle")){ //如果碰到障礙物
            Destroy(gameObject); //刪除自己
        }
        else if(col.gameObject.CompareTag("Enemy")){ //碰到敵人
            Destroy(gameObject); //刪除自己
        }    
    }
}

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

public class EnemyGenerator : MonoBehaviour
{
    int generateLimit = 50;

    public int totalBlood; //新增總血量

    public int totalBloodtmp; //新增總血量初始值(不會變)

    [SerializeField] GameObject enemyPrefab; //Enemy的Prefab參考

    [SerializeField] GameObject bossbar; //血量條參考

    bool inGenerateCD = false; //生成是否已冷卻

    float bossbarStartLength; //初始血條長度
    
    private void Start() {
        totalBlood = enemyPrefab.GetComponent<EnemyNoRange>().blood * generateLimit; //從EnemyPrefab的Enemy腳本取得單隻血量並更新總血量
        totalBloodtmp = enemyPrefab.GetComponent<EnemyNoRange>().blood * generateLimit; //從EnemyPrefab的Enemy腳本取得單隻血量並更新總血量初始值
        bossbarStartLength = bossbar.GetComponent<RectTransform>().localScale.x; //初始血條長度
    }

    private void Update() {
        if(!inGenerateCD && generateLimit != 0){ //如果生成已經冷卻
            StartCoroutine(generate()); //啟動生成敵人的協程(下堂會講)
            generateLimit --; 
        }
        //新增：修改bossbar的scale的寬(x)，高(y)不改，寬變成寬度初始值 * 目前總血量 / 總血量初始值
        bossbar.GetComponent<RectTransform>().localScale = new Vector2(bossbarStartLength * totalBlood/totalBloodtmp,bossbar.GetComponent<RectTransform>().localScale.y);
    }

    IEnumerator generate(){
        inGenerateCD = true; //進冷卻
        Instantiate(enemyPrefab, new Vector3(7.8f, Random.value*5,0),Quaternion.identity); //在x軸7.8、y軸隨機的地方生成一個敵人
        yield return new WaitForSecondsRealtime(Random.value*3); //進入隨機0~3秒的冷卻(等待0~3秒才執行接下來的程式)
        inGenerateCD = false; //冷卻完畢
    }
}

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

public class EnemyNoRange : MonoBehaviour
{
    public int blood = 9; //敵人血量
    public int bloodMinus = 3; //敵人被打到的損血量
    public GameObject Player; //被追蹤的Transform
    NavMeshAgent agent; //一個叫NavMeshAgent的腳本，是尋路物件的核心Component
    
    GameObject enemyGenerator; 
    private void Start() {
        agent = GetComponent<NavMeshAgent>(); //取得參考
        agent.updateRotation = false; //不轉Sprite方向
        agent.updateUpAxis = false; //不更新朝上軸(上方永遠為Z軸正向)
        agent.speed = 1;
        enemyGenerator = GameObject.Find("GameManager"); //取得敵人生成器參考
    }

    private void Update() {
        Player = GameObject.FindGameObjectWithTag("Player");
        if(Player != null){
            agent.SetDestination(Player.transform.position); //如果在追蹤狀態就一直把尋路終點設為被追蹤者的位置
        }
        else{
            agent.SetDestination(transform.position); //如果不在追蹤狀態就把尋路終點設為自己的位置
        }
    }
    private void OnCollisionEnter2D(Collision2D col) {
        if(col.gameObject.CompareTag("Player")){ //如果碰到被追蹤者
            Destroy(col.gameObject); //就摧毀
        }
        
        if(col.gameObject.CompareTag("Bullet")){ //新增：如果碰到子彈
            blood -= bloodMinus; //扣血
            enemyGenerator.GetComponent<EnemyGenerator>().totalBlood -= bloodMinus; //更新目前總血量
        }
        if(blood == 0){ //如果沒血
            Destroy(gameObject); //刪除自己
        }
    }
}

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

public class Enemy : MonoBehaviour
{   
    public bool Tracking = false; //是否在尋路狀態
    public Transform Player; //被追蹤的Transform
    NavMeshAgent agent; //一個叫NavMeshAgent的腳本，是尋路物件的核心Component
   
    [SerializeField] Canvas GameOverCanvas; //遊戲結束Canvas參考
    private void Start() {
        agent = GetComponent<NavMeshAgent>(); //取得參考
        agent.updateRotation = false; //不轉Sprite方向
        agent.updateUpAxis = false; //不更新朝上軸(上方永遠為Z軸正向)
    }

    private void Update() {
        if(Tracking){
            agent.SetDestination(Player.position); //如果在追蹤狀態就一直把尋路終點設為被追蹤者的位置
        }
        else{
            agent.SetDestination(transform.position); //如果不在追蹤狀態就把尋路終點設為自己的位置
        }
    }
    private void OnCollisionEnter2D(Collision2D col) {
        if(col.gameObject.CompareTag("Player")){ //如果碰到被追蹤者就摧毀
            Tracking = false;
            Destroy(col.gameObject);
        }
        GameOverCanvas.enabled = true; //新增：啟用遊戲結束Canvas
    }
}

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

public class Enemy : MonoBehaviour
{   
    public bool Tracking = false; //是否在尋路狀態
    public Transform Player; //被追蹤的Transform
    NavMeshAgent agent; //一個叫NavMeshAgent的腳本，是尋路物件的核心Component
   
    [SerializeField] Canvas GameOverCanvas; //遊戲結束Canvas參考
    private void Start() {
        agent = GetComponent<NavMeshAgent>(); //取得參考
        agent.updateRotation = false; //不轉Sprite方向
        agent.updateUpAxis = false; //不更新朝上軸(上方永遠為Z軸正向)
    }

    private void Update() {
        if(Tracking){
            agent.SetDestination(Player.position); //如果在追蹤狀態就一直把尋路終點設為被追蹤者的位置
        }
        else{
            agent.SetDestination(transform.position); //如果不在追蹤狀態就把尋路終點設為自己的位置
        }
    }
    private void OnCollisionEnter2D(Collision2D col) {
        if(col.gameObject.CompareTag("Player")){ //如果碰到被追蹤者就摧毀
            Tracking = false;
            Destroy(col.gameObject);
        }
        GameOverCanvas.enabled = true; //啟用遊戲結束Canvas
    }
}

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

public class GoodsManager : MonoBehaviour
{
    public static bool spend = false; //花錢狀態機(連到CoinsManager)

    public static string equipped_skin = "NS"; //目前裝備的造型名稱縮寫(因為使用static所以為唯一，等等會用)

    //一個Key為商品名稱縮寫、Value為「多個Key為商品資訊(含價格、名稱、購買&裝備狀態、類別及稀有度)、Value為資訊值的字典』的字典，用來存所有的商品資訊
    public static Dictionary<string,Dictionary<string,string>> goods = new Dictionary<string,Dictionary<string,string>>(){};

    //一個依照商品展示順序左到右存名稱縮寫的陣列
    public static List<string> names = new List<string>(){"NS","T1","T2","T3","EM"};

    //一個依照商品展示順序左到右存價格的陣列
    public static List<string> prices = new List<string>(){"000","010","020","030","040"};

    //一個依照商品展示順序左到右存名稱的陣列
    public static List<string> realName = new List<string>(){"Normal\nSkin","Test1","Test2","Test3","Evil\nMoon"};

    //一個依照商品展示順序左到右存購買&裝備狀態的陣列(0 = 尚未購買；1 = 已購買未裝備；2 = 已裝備)
    public static List<int> statuses = new List<int>(){2,0,0,0,0};

    //一個依照商品展示順序左到右存類別的陣列(Skin = 造型or皮膚)
    public static List<string> roles = new List<string>(){"Skin","Skin","Skin","Skin","Skin"};

    //一個依照商品展示順序左到右存稀有度的陣列(0 = 普通；1 = 稀有；2 = 史詩；3 = 神話；4 = 傳奇)
    public static List<int> rarities = new List<int>(){0,1,2,3,4};
    
    void Awake()
    {
        for(int i = 0;i < names.Count;i ++){
            Dictionary<string,string> good_info_temp = new Dictionary<string, string>() {}; //建立一個空字典
            
            //將價格、名稱、購買&裝備狀態、類別及稀有度等五個資訊加入字典
            good_info_temp.Add("Price",prices[i]); 
            good_info_temp.Add("RealName",realName[i]);
            good_info_temp.Add("Status",statuses[i].ToString());
            good_info_temp.Add("Role",roles[i]);
            good_info_temp.Add("Rarity",rarities[i].ToString());

            goods.Add(names[i],good_info_temp); //將字典加入商品資訊的大字典裡
        }
    }
}

using System.Collections.Generic;
using System.Globalization;
using UnityEngine;
using TMPro;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class StoreManager : MonoBehaviour
{
    [SerializeField] GameObject showcasePrefab;
    private void Start() {
        List<string> names = GoodsManager.names; //商品名稱縮寫

        Dictionary<string,Dictionary<string,string>> goods = GoodsManager.goods; //商品資訊

        List<string> statusText = new List<string>(){"Buy it!","Equip!","Unequip!"}; //三個按鈕文字狀態

        List<string> colorCodes = new List<string>(){"9FFF8A","8BEEFF","9C4CFF","FFE73D","FF3D43"}; //五個稀有度對應的顏色色碼

        for (int i = 0;i < names.Count;i++){
            //這個腳本放在Canvas，我要把展示框實例化在Canvas/Image/ShowcaseHorizontal裡，所以用兩次GetChild向下讀兩層
            GameObject showcase = Instantiate(showcasePrefab,transform.GetChild(0).transform.GetChild(0).transform); 

            showcase.name = names[i]; //改實例化的物件名稱
            string colorCode = colorCodes[int.Parse(goods[names[i]]["Rarity"])]; //讀色碼
            //按照色碼改展示框Image的顏色(原本是白色，覆蓋顏色上去就有不同顏色了~)
            showcase.GetComponent<Image>().color = new Color(int.Parse(colorCode.Substring(0,2),NumberStyles.HexNumber)/255f,int.Parse(colorCode.Substring(2,2),NumberStyles.HexNumber)/255f,int.Parse(colorCode.Substring(4,2),NumberStyles.HexNumber)/255f);
            
            RectTransform[] children = showcase.GetComponentsInChildren<RectTransform>(); //取得展示框內所有物件的RectTransform
            
            List<string> columns = new List<string>(){"RealName","Body","Head","Price","Status"}; //由上到下所需更改的子物件Tag
            
            int count = 0; //計數，共5個
            foreach(RectTransform gO in children){ //遍歷所有子物件
                if(gO.gameObject.tag == columns[count]){ //如果子物件的Tag跟list輪到的Tag一樣的化
                    TextMeshProUGUI Tmp = gO.gameObject.GetComponent<TextMeshProUGUI>(); //取得TMP參考
                    Image IMG = gO.gameObject.GetComponent<Image>(); //取得Image參考

                    if(Tmp != null){ //如果有TMP組件代表是文字
                        if(gO.parent.TryGetComponent(out Button button)){ //若嘗試取得Button參考成功
                            Tmp.SetText(statusText[int.Parse(goods[names[i]][gO.tag])]); //更新Status
                            //更新Button(文字物件的父物件)的顏色
                            gO.parent.GetComponent<Image>().color = new Color(int.Parse(colorCode.Substring(0,2),NumberStyles.HexNumber)/255f,int.Parse(colorCode.Substring(2,2),NumberStyles.HexNumber)/255f,int.Parse(colorCode.Substring(4,2),NumberStyles.HexNumber)/255f);
                            count --;
                            continue;
                        }
                        Tmp.SetText(goods[names[i]][gO.tag]); //沒有button組件則為其他文字
                    }
                    else{
                        //沒有TMP則為圖片，這裡用到一個小技巧，只要在Project裡新增一個Resources資料夾(跟Assets同層級)
                        //再將資源丟入這個資料夾，就可以用「Resources.Load<類型>(相對路徑)來讀取資源
                        //如果你有一個資料夾Folder，路徑是.../Resources/Folder，相對路徑指的是「Folder」，連/都不用
                        IMG.sprite = Resources.Load<Sprite>("Skin/"+names[i]+"/"+columns[count]); 
                    }
                    count ++;
                }
            }
        }
    }

    public void BackToStartMenu(){ //回主畫面
        if(GoodsManager.equipped_skin != ""){ //不可沒裝備造型
            SceneManager.LoadScene("StartScene"); //以Scene Name切換Scene
        }
    }
}

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

public class BuyAndEquipSkin : MonoBehaviour //放在展示框的購買按鈕上
{
    private string goods_name;
    private int price;
    void Start(){
        goods_name = gameObject.transform.parent.name; //取得展示框名稱，也就是該商品名稱縮寫
        price = int.Parse(GoodsManager.goods[goods_name]["Price"]); //取得商品價格
        //如果Status是0就不用變，初始為Buy it!
        if(int.Parse(GoodsManager.goods[goods_name]["Status"]) == 1){ //如果Status是1則將按鈕文字改成Equip!
            TextMeshProUGUI text = gameObject.transform.GetComponentInChildren<TextMeshProUGUI>();
            text.SetText("Equip!");
        }
        else if(int.Parse(GoodsManager.goods[goods_name]["Status"]) == 2){ //如果Status是2則將按鈕文字改成Unequip!
            TextMeshProUGUI text = gameObject.transform.GetComponentInChildren<TextMeshProUGUI>();
            text.SetText("Unequip!");
        }
    }
    public void OnClick(){ //當按鈕被按下
        //判斷目前的前夠不夠及此商品是否已被購買
        if(CoinsManager.Coins >= price && int.Parse(GoodsManager.goods[goods_name]["Status"]) == 0){ //若錢夠且未被購買
            GoodsManager.goods[goods_name]["Status"] = "1"; //購買狀態
            TextMeshProUGUI text = gameObject.transform.GetComponentInChildren<TextMeshProUGUI>(); //改按鈕文字
            text.SetText("Equip!");
            CoinsManager.Coins -= price; //花錢
            GoodsManager.spend = true; //花錢狀態機更新
        }
    }
}

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

public class BuyAndEquipSkin : MonoBehaviour //放在展示框的購買按鈕上
{
    private string goods_name;
    private int price;
    void Start(){
        goods_name = gameObject.transform.parent.name; //取得展示框名稱，也就是該商品名稱縮寫
        price = int.Parse(GoodsManager.goods[goods_name]["Price"]); //取得商品價格
        //如果Status是0就不用變，初始為Buy it!
        if(int.Parse(GoodsManager.goods[goods_name]["Status"]) == 1){ //如果Status是1則將按鈕文字改成Equip!
            TextMeshProUGUI text = gameObject.transform.GetComponentInChildren<TextMeshProUGUI>();
            text.SetText("Equip!");
        }
        else if(int.Parse(GoodsManager.goods[goods_name]["Status"]) == 2){ //如果Status是2則將按鈕文字改成Unequip!
            TextMeshProUGUI text = gameObject.transform.GetComponentInChildren<TextMeshProUGUI>();
            text.SetText("Unequip!");
        }
    }
    public void OnClick(){ //當按鈕被按下
        //判斷目前的錢夠不夠及此商品是否已被購買
        if(CoinsManager.Coins >= price && int.Parse(GoodsManager.goods[goods_name]["Status"]) == 0){ //若錢夠且未被購買
            GoodsManager.goods[goods_name]["Status"] = "1"; //購買&未裝備狀態
            TextMeshProUGUI text = gameObject.transform.GetComponentInChildren<TextMeshProUGUI>(); //更新按鈕文字
            text.SetText("Equip!");
            CoinsManager.Coins -= price; //花錢
            GoodsManager.spend = true; //花錢狀態機更新
        }
        //新增
        else if(int.Parse(GoodsManager.goods[goods_name]["Status"]) == 1 && GoodsManager.equipped_skin == ""){ //若已被購買但未被裝備且目前沒裝備
            GoodsManager.goods[goods_name]["Status"] = "2"; //裝備狀態
            GoodsManager.equipped_skin = goods_name; //更新裝備造型名稱縮寫
            TextMeshProUGUI text = gameObject.transform.GetComponentInChildren<TextMeshProUGUI>(); //更新按鈕文字
            text.SetText("Unequip!");
        }
        else if(int.Parse(GoodsManager.goods[goods_name]["Status"]) == 2){ //若已被裝備
            GoodsManager.goods[goods_name]["Status"] = "1"; //未裝備狀態
            GoodsManager.equipped_skin = ""; //更新裝備造型名稱縮寫為無
            TextMeshProUGUI text = gameObject.transform.GetComponentInChildren<TextMeshProUGUI>(); //更新按鈕文字
            text.SetText("Equip!");
        }
    }
}

void coroutine(){
	//sth
    StartCoroutine(ExampleCoroutine()); //開始協程
}

IEnumerator ExampleCoroutine(){ //協程回傳的為一個IEnumerator物件，可以理解為「反覆計算」
	//sth before waiting...，在等待前執行的東西
    
    //yield在等待second秒之後發出反覆運算結束的訊號，WaitForSecond會受到Time.Scale的影響導致快慢
    yield return new WaitForSeconds(second); 
    //or，WaitForSecondRealtime不會受到Time.Scale的影響，時間跟現實世界一致
    yield return new WaitForSecondsRealtime(second);
    //sth after waiting...，在等待後執行的東西
}

IEnumerator QS_s(){
    Destroy(gameObject.GetComponent<PolygonCollider2D>()); //刪除碰撞器
    yield return new WaitForSecondsRealtime(10);
    gameObject.AddComponent<PolygonCollider2D>(); //加回碰撞器
}

IEnumerator EO_s(float sec){ //傳入等待時間參數
    yield return new WaitForSecondsRealtime(sec); //等待一段時間
    Instantiate(Wave,transform.position,transform.rotation); //生成
}

IEnumerator ConnectionCount(){
    while(true){
        yield return new WaitForSecondsRealtime(2f);
        Debug.Log(NetworkManager.Singleton.ConnectedClients.Count);
    }
}

IEnumerator SpawnOverTime(){
    while(true){ //無限迴圈
        yield return new WaitForSecondsRealtime(Random.Range(1,5)); //等待隨機取數1~5秒
        //進階多人連線語法不用管，基本上就是判斷場上的物件數量並生成
        if(NetworkManager.Singleton.ConnectedClients.Count > 0 && NetworkObjectPool.Singleton.Active(prefab) < MaxPrefabCount){
            SpawnFood();
        }     
    }
}

IEnumerator Example(float sec){ //傳入等待時間參數
    yield return new WaitForSecondsRealtime(sec); //等待一段時間
    Destroy(gameObject) //摧毀物件
}