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#1 2012-05-21 05:16:11

geforce
Guest

JAVA CODING - Implementing a methods for a game

  
import acm.graphics.*;
import acm.program.*;
import java.awt.Color;
import java.util.Iterator;
import java.util.Random;
import java.util.List;
 
public class LAB1
{
	final static int BLOCKWIDTH = 50;
	final static int BLOCKHEIGHT = 10;
	final static int NBLOCKS = 10;
	final static int BLOCKROWS = 5;
	final static int ROWZERO = 50;
	final static int ROWSEPARATION = (5*BLOCKHEIGHT);
	final static int WIDTH = (BLOCKWIDTH*NBLOCKS);
	final static int HEIGHT = 600;
 
	public static java.util.List<acm.graphics.GRect> createPlayfield()
	{
		Random r = new Random();
		List<GRect> l = null;
		int x = 0;
		int y = ROWZERO - BLOCKHEIGHT;
		Color c = new Color(r.nextInt(256));
 
		addBrick(l,x,y,BLOCKWIDTH,BLOCKHEIGHT,c);
 
		for (int i = 0; i < BLOCKROWS; i++)
		{
			i = (i * ROWSEPARATION) + ROWZERO;
 
			for(int j = 0; j < NBLOCKS; j++)
			{
				j = j * BLOCKWIDTH;
			}
		}
 
 
 
 
	}
 
	public static void addBrick(java.util.List<acm.graphics.GRect> l, int x, int y, int width, int height, java.awt.Color c)
	{
		l.add(createBrick(x,y,WIDTH,HEIGHT,c));
	}
 
	public static acm.graphics.GRect createBrick(int x, int y, int width, int height, java.awt.Color c)
	{
		GRect s = new GRect(x,y,WIDTH,HEIGHT);
 
		return s;
	}
	public static acm.graphics.GRect intersect(acm.graphics.GObject o,java.util.List<acm.graphics.GRect> l)
	{
		GRectangle r = o.getBounds();
 
		for(GRect e : l)
		{
			if(e.getBounds().intersects(r))
				return e;
		}
		return null;
	}

Problem I have is the createPlayfield() method, I have no idea on what to do, this is the description..

createPlayfield is a static method that returns a List of GRects. Each GRect is coloured randmoly and is
of size BLOCKWIDTH x BLOCKHEIGHT. The blocks are placed in a grid BLOCKROWS height x
NBLOCKS. The i'th row of blocks has its upper edge aligned with row i * ROWSEPARATION +
ROWZERO. The j'th column of blocks has its left edge aligned with j * BLOCKWIDTH. You may
find it useful to implement this method using the addBrick method below.

API's : The acm.graphics.GRect Class.


I really have no Idea what to do, can anyone break down the steps on what to do? I know that for i'th and j'th blocks i need a nested for loop but I don't know how to make the block return the GRects and also have a problem with where to place the GRect constructor (as in the for loop for it to be repeated or anywhere else), thanks for any suggestions.

I would really like to get help on this, I've tryed a lot to fix this for the past couple of days, the following playfield method makes no sense, still trying to figure out what to do.

#2 2012-05-21 07:37:42

geforce
Member
Registered: 2012-05-21
Posts: 2

Re: JAVA CODING - Implementing a methods for a game

Is this the right section that I should be posting, or should it be somewhere else..?

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#3 2012-05-21 07:48:06

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,582

Re: JAVA CODING - Implementing a methods for a game

Hi geforce;

Welcome to the forum. Yes, you are in the right section.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#4 2012-05-21 08:02:40

geforce
Member
Registered: 2012-05-21
Posts: 2

Re: JAVA CODING - Implementing a methods for a game

Alright, just making sure.

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