Question

这是我的BoardGenerator.cs

using UnityEngine;
using System;
using System.Collections.Generic;
using Random = UnityEngine.Random; 

public class BoardGenerator : MonoBehaviour {

    [Serializable]
    public class Count{
        public int min;
        public int max;

        public Count(int m, int M){
            min = m;
            max = M;
        }
    }

    public int columns = 20;
    public int rows = 20;
    public Count wallCount = new Count (10, 20);
    public Count moneyCount = new Count (10, 15);
    public GameObject floorTiles;
    public GameObject wallTiles;
    public GameObject moneyTiles;
    public GameObject[] enemyTiles;

    private Transform board;
    private List <Vector3> positions = new List<Vector3>();

    void BoardSetup(){
        board = new GameObject ("Board").transform;

        for (int x=-1; x<columns+1; x++) {
            for (int y=-1; y<rows+1; y++){
                GameObject toInstantiate = floorTiles;
                if(x==-1||x==columns||y==-1||y==rows)
                    toInstantiate = wallTiles;

                GameObject instance = Instantiate (toInstantiate, new Vector3 (x, y, 0f), Quaternion.identity) as GameObject;
                instance.transform.SetParent (board);
            }
        }

    }

    Vector3 RandPos(){
        int randomIndex = Random.Range (0, positions.Count);
        Vector3 randPos = positions [randomIndex];
        positions.RemoveAt (randomIndex);
        return randPos;
    }

    void MoneyWallRandom (GameObject tileObj, int m, int M)
    {
        int objectCount = Random.Range (m, M);

        for(int i = 0; i < objectCount; i++)
        {
            Vector3 randomPosition = RandPos();
            GameObject tile = tileObj;
            Instantiate(tile, randomPosition, Quaternion.identity);
        }
    }

    void EnemyRandom (GameObject[] tileObj, int m, int M)
    {
        int objectCount = Random.Range (m, M);

        for(int i = 0; i < objectCount; i++)
        {
            Vector3 randomPosition = RandPos();
            GameObject tile = tileObj[Random.Range (0, tileObj.Length)];
            Instantiate(tile, randomPosition, Quaternion.identity);
        }
    }

    public void BoardSetup (int level)
    {
        BoardSetup ();
        MoneyWallRandom (wallTiles, wallCount.min, wallCount.max);
        MoneyWallRandom (moneyTiles, moneyCount.min, moneyCount.max);
        int enemyCount = level + 3;
        EnemyRandom (enemyTiles, enemyCount, enemyCount);
    }
}

我的GameManager.cs

using UnityEngine;
using System.Collections;

public class GameManager : MonoBehaviour {

    public BoardGenerator boardScript;

    private int level = 1;

    // Use this for initialization
    void Awake () {

        boardScript = GetComponent<BoardGenerator> ();
        InitGame ();
    }

    void InitGame(){
        boardScript.BoardSetup (level);
    }

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

    }
}

董事会成功创建，但由于某些原因无法创建敌人和金钱牌。以下是控制台中的错误

ArgumentOutOfRangeException: Argument is out of range.
Parameter name: index
System.Collections.Generic.List`1[UnityEngine.Vector3].get_Item (Int32 index) (at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System.Collections.Generic/List.cs:633)
BoardGenerator.RandPos () (at Assets/_Scripts/BoardGenerator.cs:50)
BoardGenerator.MoneyWallRandom (UnityEngine.GameObject tileObj, Int32 m, Int32 M) (at Assets/_Scripts/BoardGenerator.cs:61)
BoardGenerator.BoardSetup (Int32 level) (at Assets/_Scripts/BoardGenerator.cs:83)
GameManager.InitGame () (at Assets/_Scripts/GameManager.cs:18)
GameManager.Awake () (at Assets/_Scripts/GameManager.cs:14)

我不知道如何解决它......

Answer 1

tl; dr positions永远不会被初始化为空列表以外的任何内容，因此randomIndex始终为0，因此在抛出异常的行中，您正尝试删除索引0处的项目，但列表中没有项目，因此会引发异常。

正确初始化positions并解决您的问题。

在这一行抛出异常：

positions.RemoveAt (randomIndex);

这种情况正在发生，因为positions.Count为0所以

int randomIndex = Random.Range (0, positions.Count);

相当于

int randomIndex = Random.Range (0, 0);

相当于

int randomIndex = 0;

在任何索引处都无法从positions中删除任何内容，因为positions是一个空列表。

Unity - 创建电路板时参数超出范围

1 个答案: