Question

我正在尝试为游戏生成方程式。

我为等式中的每个术语创建了一个类：

[System.Serializable]
public class EquationTerm
{
    public int Value { get; set; }      //random int between 1 and 9
    public int Sign { get; set; }       //1 for +, 2 for -, 3 for *, 4 for / 
    public bool IsNextTerm { get; set; }

    //default positive equationTerm 
    public EquationTerm(int value)
    {
        Value = value;
        Sign = 1;
        IsNextTerm = false;
    }

    public EquationTerm(int value, int sign, bool nextTerm)
    {
        Value = value;
        Sign = sign;
        IsNextTerm = nextTerm;
    }
}

然后我创建了两个数组来保持等式的左侧和右侧。我想使用InitializeArray函数使用我的构造函数生成两个数组，除了我不能使用它们，因为它们都有参数。有没有办法解决这个问题？

public class EquationGenerator : MonoBehaviour
{
    EquationTerm[] LeftTerms;
    EquationTerm[] RightTerms;

    void Start ()
    {
        //Initialize both side with a random number of terms
        LeftTerms = InitializeArray<EquationTerm>(Random.Range (1, 6));
        RightTerms = InitializeArray<EquationTerm>(Random.Range (1, 6));
    }

    EquationTerm[] InitializeArray<EquationTerm>(int length) where EquationTerm : new()
    {
        EquationTerm[] array = new EquationTerm[length];
        array [0] = new EquationTerm (Random.Range (1, 10));
        for (int i = 1; i < length; ++i)
        {
            array[i] = new EquationTerm (Random.Range (1, 10), Random.Range (1, 5), true);
        }

        return array;
    }

我在另一篇文章中看到我可以使用Activator.CreateInstance所以我试着写

array[0] = (EquationTerm)Activator.CreateInstance(typeof(EquationTerm), new object[] { EquationTerm (Random.Range (1, 10)) });

但它告诉我Activator不存在。

Answer 1

为什么不尝试使用非通用版本：

public class EquationGenerator 
        {
            EquationTerm[] LeftTerms;
            EquationTerm[] RightTerms;

            void Start()
            {
                //Initialize both side with a random number of terms
                LeftTerms = InitializeArray(Random.Range(1, 6));
                RightTerms = InitializeArray(Random.Range(1, 6));
            }

            EquationTerm[] InitializeArray(int length)
            {

                EquationTerm[] array = new EquationTerm[length];
                array[0] = new EquationTerm(Random.Range(1, 10));
                for (int i = 1; i < length; ++i)
                {
                    array[i] = new EquationTerm(Random.Range(1, 10), Random.Range(1, 5), true);
                }

                return array;
            }
        }

如何使用带参数的构造函数初始化对象数组？

1 个答案: