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

public class RabbitHuntGameMode : ChallengeGameMode
{
    public RabbitHuntGameMode(GameMgr gameMgr) : base(gameMgr) {
        this.animalTypeID = 0;
        animalPrefab = animalsBaseT.Find("Rabbit").gameObject;
        baseCreateDistance = 5;
        AddSelectLevelView();
    }

    //动物的创建列表（数组元素表示动物颜色样式）
    int[] animalCreateList;
    //动物创建列表的当前索引值
    int animalCreateIndex = 0;

    //设置关卡级别
    public override void SetLevel(int level) {
        if (level == 1) {
            animalCreateList = new int[]{1, 1};
            arrowCount = 5;
        }
        else if (level == 2) {
            animalCreateList = new int[]{2, 2};
            arrowCount = 6;
        }
        else if (level == 3) {
            animalCreateList = new int[]{3, 3};
            arrowCount = 7;
        }
        else if (level == 4) {
            animalCreateList = new int[]{1, 1, 2, 2};
            arrowCount = 8;
        }
        else if (level == 5) {
            animalCreateList = new int[]{1, 1, 1, 3, 3, 3};
            arrowCount = 10;
        }
        if (animalCreateList != null) animalCount = animalCreateList.Length;
        CreateAnimal();
    }

    float baseCreateDistance = 0;
    float plusCreateDistance = 3;

    void CreateAnimal() {
        if (animalCreateIndex >= animalCreateList.Length) return;
        int animalStyleID = animalCreateList[animalCreateIndex++];

        //计算初始生成位置，后面的兔子生成越来越远，在标准方向的±30°内生成
        #region 
            float createDistance = baseCreateDistance;
            baseCreateDistance += plusCreateDistance;
            Vector3 standardPointer = animalsBaseT.forward;
            Vector3 displace = standardPointer * createDistance;
            displace = Quaternion.AngleAxis(30 - Random.value * 60, Vector3.up) * displace;
            Vector3 newPos = animalsBaseT.position + displace;
        #endregion

        GameObject animalObject = GameObject.Instantiate(animalPrefab, newPos, Quaternion.identity, animalsBaseT);
        animalObject.SetActive(true);

        Rabbit rabbit = animalObject.GetComponent<Rabbit>();
        rabbit.baseDistance = createDistance;
        rabbit.baseDistanceMoveRange = plusCreateDistance;
        rabbit.hp = animalStyleID;
        rabbit.ChangeColorByType(animalStyleID);
        rabbit.RotateByWorldY(Random.value * 360);
        rabbit.onDie += delegate(Rabbit rb) {
            animalCount--;
            animalSet.Remove(rb);
            CreateAnimal();
        };
        animalSet.Add(rabbit);

        if (animalSet.Count < maxAnimalCountAtTheSameTime) {
            CreateAnimal();    
        }
    }
}