CODEWITHSUNDEEP
c#arraysvariables
toni
toni

Reputation: 152

How to create arrays with different names in C#?

I'm currently working on a game (console application) with 25 Chunks, that are 5x5. All Chunks are in a List(5x5) witch is the Level in the end. I do not want to declare all arrays. I would like to write a method in witch the arrays will be declared but with changing names.
For example:
- ac_Array_1
- ac_Array_2

    static void Level()
    {
        List<char[,]> ol_Level = new List<char[,]>();

    }
    static void Spielblock()
    {
        int i_Stelle = 1;
        string s_ArrayName = "ac_Chunk_" + i_Stelle;
        i_Stelle++;
        char[,] /*NAME*/ = new char[5, 5];
    }

Upvotes: 1

Views: 808

Answers (2)

Jamie F
Jamie F

Reputation: 23789

To have a dynamic variable name like you are requesting is not a simple thing to accomplish.

Generally, variable names are known at compile time, and the compiler can make optimizations using that information. What you are requesting would keep that from happening.

So the suggestions that you are seeing: create a variable, such as a dictionary, known when compiling and writing the code. Make that variable one that can dynamically expand to contain as many "chunks" as you'd like. And with a Dictionary<string, char[,]> you can even give each of those chunks a name. They won't be individual variable names, but it will let you access them by string/name and iterate through the collection in different ways.

To add a detail to Johnny's answer, at any point you can use 

var ac_chunk = ol_Level["ac_Chunk_1"];

if you want to repeatedly access an individual chunk.

Or, even easier, just keep using ol_Level[$"ac_Chunk_{chunkNumber}"]

Upvotes: 1

Johnny
Johnny

Reputation: 9509

Try something like this:

int numOfLevels = 5;

Dictionary<string, char[,]> ol_Level = Enumerable
    .Range(1, numOfLevels)
    .ToDictionary(k => $"ac_Chunk_{k}", v => new char[5,5]);

ac_Chunk = ol_Level["ac_Chunk_1"];//char[5,5]

for (int i_Row = 0; i_Row < ac_Chunk.getLength(0); i_Row++) 
{ 
    for (int i_column = 0; i_column < ac_Chunk.getLength(1); i_column++) 
    { 
        ac_Chunk[i_Row, i_column] = '#'; 
    } 
} 

...

levels:

ac_Chunk_1, ac_Chunk_2, ac_Chunk_3, ac_Chunk_4, ac_Chunk_5

n.b. using System.Linq and c# 6.0 $ interpolation

Upvotes: 2

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