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Thread: Minesweeper in eclipse

  1. #1
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    Question Minesweeper in eclipse

    Hi guys,

    I have just started learning java in Eclipse and was wondering about this:

    I have tried to make a minesweeper application (just threw myself into the deep end there) and have created a class that fills a [field_size][field_size][2] multidimensional array with:

    1st. 0's and 1's for no bombs and bombs, respectively,
    2nd. the number of mines surrounding each co÷rdinate (1 to 8, 9 if its a mine itself) in that first part.

    All in one class file. I have never worked with projects that involved multiple class files yet. Now the thing is, I want to know how I can make this class that I have into a method that can provide another class with this randomly filled matrix. I suppose that if I am going to write the rest of the minesweeper app in the same class, and I have to run it again and again after clicking a box (no idea how to do that yet btw) it would create a new minefield every time, which would pretty much ruin the whole idea of the game.

    Code so far, which I am quite proud of:
    package part1;
     
    public class msw {
     
    	public static void main(String[] args) {
     
    		int field_size=10;
    		int numberofmines=10;
    		int[][][]field=new int[field_size][field_size][3];
    		//fill field with 0's
    		for(int i=0;i<field_size;i++)
    		{
    			for(int j=0;j<field_size;j++)
    			{
    				field[i][j][1]=0;
    			}
    		}
    		// pick mines
    		for (int i=0;i<numberofmines;i++)
    		{
    			int rx =(int)(Math.random()*field_size);
    			int ry =(int)(Math.random()*field_size);
    			if (field[rx][ry][1]==1)
    				i=i-1;
    			else
    			field[rx][ry][1]=1;
    		}
    		// print field[x][x][1] (for debugging purposes)
    		for (int i=0;i<field_size;i++)
    		{
    			for(int j=0;j<field_size;j++)
    			{
    				System.out.print(field[i][j][1]+" ");
    			}
    			System.out.println();
    		}
    		// fill field[x][x][2] with amount of mines surrounding a coordinate in field[x][x][1]
    		for(int i=0;i<field_size;i++)
    		{
    			for(int j=0;j<field_size;j++)
    			{
    				for(int k=-1;k<2;k++)
    				{
    					for(int l=-1;l<2;l++)
    					{
    						if (field[i][j][1]==1)
    							field[i][j][2]=9;
    						else
    						{
    							if (i+k<0)
    								k=k+1;
    							if (j+l<0)
    								l=l+1;
    							if (i+k>field_size)
    								k=2;
    							if (j+l>field_size)
    								l=2;
    							if (i+k<field_size&&j+l<field_size&&k<2&&l<2)
    							{	
    								if (field[i+k][j+l][1]==1)
    									field[i][j][2]=field[i][j][2]+1;
    							}			
    						}
    					}
    				}
    			}
    		}
    		// printing 2nd part of matrix
    		System.out.println();
    		for (int i=0;i<field_size;i++)
    		{
    			for(int j=0;j<field_size;j++)
    			{
    				System.out.print(field[i][j][2]+" ");
    			}
    			System.out.println();
    		}
    	}
    }

    Any help is most welcome.


  2. #2
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    Default Re: Minesweeper in eclipse

    I have never worked with projects that involved multiple class files yet
    I noticed you have everything in your main. Have you worked with projects with multiple methods before?
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  3. #3
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    Default Re: Minesweeper in eclipse

    I don't know what a main is, and I have only vague ideas about what a method is. Would like to know what they are

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    Default Re: Minesweeper in eclipse

    vague ideas about what a method is.
    Take a look at the tutorial: Defining Methods (The Java™ Tutorials > Learning the Java Language > Classes and Objects)
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Minesweeper in eclipse

    And since you don't know what main() is, I suggest you start with the discussion that follows the HelloWorld tutorial.

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