Help understanding how program works!

[zzzarf]

Hi I started work on a project and hit a snag so I got help, but am struggling to really decipher what the code is doing. Specifically the check() method. Any help would be great thanks. I pasted the two major methods. THANKS AGAIN!

/*
Classic stacker arcade game
*/

public void go()
    {
	int tmp = 0;
	Component temporaryLostComponent = null;
	//move bar side to side while user doesnt press space bar
	do 
	    {
		if (right == true)
		    {
			right();
		    } 
		else 
		    {
			left();
		    }
		if (delX[1] == 10-length[1]) //reverse direction when at right bound
		    {
			right = false;
		    } 
		else if (delX[1] == 0) //reverse direction when at left bound
		    {
			right = true;
		    }
		draw(); //draw board
		try 
		    {
			Thread.sleep((long) time);
		    }
		catch (InterruptedException e) 
		    {
                        e.printStackTrace();
		    }
		
	    }
	while(press == false);

	if (level>12)
	    {
		time= 150-(iteration*iteration*2-iteration); //blocks move faster with each successful move
	    } 
	else 
	    {
		time = time - 2.2; //speed stops increasing after 
	    }
	iteration++;
	level--;
	press = false;
	tmp = check();
	length[0] = length[1];
	length[1] = tmp;
	if (level == -1)
	    {
		JOptionPane.showMessageDialog(temporaryLostComponent, "Congratulations! You beat the game!");
	    }
	if (length[1] <= 0)
	    {	
		JOptionPane.showMessageDialog(temporaryLostComponent, "Game over! You reached line "+(18-level)+"!");
		System.exit(0);
	    }
	last = delX[1];
	start = false;
	go();
    }

    public int check()
    {
	if (start == true)
	    {
		return length[1];
	    } 
	else if (last<delX[1])
	    {
		if (delX[1]+length[1]-1 <= last+length[0]-1)
		    {
			return length[1];
		    } 
		else 
		    {
			return length[1]-Math.abs((delX[1]+length[1])-(last+length[0]));
		    }
	    } 
	else if (last>delX[1])
	    {
		return length[1]-Math.abs(delX[1]-last);
	    } 
	else 
	    {
		return length[1];
	    }
    }

[wsaryada]

Aren't you the one who write the method? You should tell us what you are trying to accomplish with the method. And what problems that you have currently. The last thing is please edit your post to use the [code][/code] block for your code to make it more readable.

[DarrylBurke]

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db

[zzzarf]

Sorry. Truth is my friend wrote it and I can't understand a few aspects of it. In a bind. Understand if you don't want to help. Thanks again

[Fubarable]

So this is in fact "borrowed" code. Then the usual fix is to go to the source. Ask your friend about his code, and work towards understanding and a solution.

[zzzarf]

That was my first try. He's MIA. Really just need a few sentence explanation of how it works.

[Fubarable]

My experience is that it is better in this situation to then write your own code and thus be able to understand it from the ground up.

You can continue to try to find your friend of course, as his help would be great!

[zzzarf]

You're obviously right. Just in a bind. Thanks again.

[Fubarable]

That's what happens when you try to use non-professional borrow code. Do the right thing -- create your own code for your project. You'll understand it much better, and will learn much more!