Moving numbers in richTextBox in C#

Question

0.00/5 (No votes)

See more:

I need to solve behavior of four numbers, which will move down or rotate as the meaning of the game Tetris. This is that I want to do on richTextBox in C#, but my code is still not working good. I want to do as illustrated below. How can I do to that numbers are moving in right direction?

0 0 0 0 1 1 1 1 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0

- after moving numbers of 1 down

0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 1 1 1 1 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0

- or also after rotating clockwise numbers of 1

0 0 0 0 1 0 0 0 0 0 0 0 0
0 0 0 0 1 0 0 0 0 0 0 0 0
0 0 0 0 1 0 0 0 0 0 0 0 0
0 0 0 0 1 0 0 0 0 0 0 0 0

Here is a my code:

C#

string[] pole8x8 = new string[400];
string[] pole4x4 = new string[4*2];
List<string> numbers = new List<string>();
int len = 52;

public Form1()
{
    InitializeComponent();

    for (int i = 0; i < pole8x8.Length; i+=2)
    {
        pole8x8[i] = "0 ";
        richTextBox1.Text += pole8x8[i];
        richTextBox1.BackColor = Color.Black;
        richTextBox1.ForeColor = Color.White;
    }

    for (int i = 0; i < pole4x4.Length; i+=2)
    {
        pole4x4[i] = "1 ";
        richTextBox1.SelectionStart = 18;
        richTextBox1.SelectedText = pole4x4[i];
        numbers.Add(pole4x4[i]);
     }

 }

 private void button1_Click(object sender, EventArgs e)
 {
     richTextBox1.SelectionStart += len;

     foreach (string s in numbers)
     {
        richTextBox1.SelectedText = s;
     }

 }

Posted 8-Oct-14 3:08am

Andrej Kozlovský

Add a Solution

Comments

BillWoodruff 8-Oct-14 9:43am

I think doing this with text in a RichTextBox is going to be very difficult. I suggest you consider another approach: how about using Labels in a TableLayoutPanel ?

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

johannesnestler · Answer 1 · 2014-10-08T04:57:00

Hi Andrej,

While I can imagine what you try to do here, I would suggest you consider a complete alternative approach.

1. Don't mess arround with strings (in your case characters stored in a string Array - even worse).. So create an "abstraction" of your "board" (game-field whatever you call it) e.g as 2 dimensional Array of booleans (you only have 2 states, don't you? - filled (1) or not (0)).

2. Don't try to do everything in one step. Split your code into different functions/methods. E.g. Create a method for each logical operation you want to support - to "move down", "rotate", ... - then just move arround (or overwrite) the booleans in the "board"-array. In these methods you can consider edge-cases (like rotation isn't possible cause your Piece is "to big" etc.).

3. After you have the "new" board-array (all operations applied) try to "render it" in one step - e.g if you really want to use the RichTextBox (consider BillWoodruff's idea) just rewrite according to your new board.

So you see, if you later decide to make a "real" tetris out of it - with graphics - you will have all the logic in place - just the rendering to change.

Examples (just quick ones to give the idea):
Represent your board as 2d Array

bool[,] board = new bool[20, 13];

- or even better create a board class that handles the "array-logic" internal.
Represent a pice as list of "coordinates" on your board;

C#

struct Coordinate
{
    public int X { get; set; }
    public int Y { get; set; }
}

A Piece is than a "collection" of coordinates

C#

class Piece
{
    public Coordinate[] Coordinates { get; set; }
}

So your Manipulation methods could have signatures like this:

public void MoveDown(Piece piece, bool[,] board) {  /* change board */ }

And Rendering could be done like this - just go through all "places" on your board and fill up your RichTextBox, Grid, Labels or whatever - here i used just the console.

C#

static void Render(bool[,] board)
{
    for (int iColumn = 0; iColumn < board.GetLength(1); iColumn++)
    {
        for (int iRow = 0; iRow < board.GetLength(0); iRow++)
        {
            Console.Write(board[iRow, iColumn] ? "1" : "0");
        }
        Console.WriteLine();
    }
}

So you see how everything sorts itself out to real "objects" in a Tetris game, - the board, the pieces, the positions - this is OOP - and I assume you are learning how to program object orientated with such a toy-project (or homework)...

Happy coding and
Kind regards

Johannes