inv.java

litwizi j2me

import java.awt.*;

class inv
{
	private Graphics paper;
	private Image gfx;
	private int[] invItem;
	private int numInInv;
	private int currSelected;

	// Items class used to return IDs and names etc of obejcts
	private items item;

	public inv(Graphics gr, Image im)
	{
		this.paper=gr;
		this.gfx=im;
		this.invItem=new int[10];
		this.numInInv=0;
		this.currSelected=0;
		this.invItem[0]=0;
		this.invItem[1]=0;
		this.invItem[2]=0;
		this.invItem[3]=0;
		this.invItem[4]=0;
		this.invItem[5]=0;
		this.item=new items();
	}

	// Return name of currently selected item
	public String getName()
	{
		return item.getName(invItem[currSelected]);
	}

	// Return ID of currently selected item
	public int getID()
	{
		if (numInInv>0)
		{
			return invItem[currSelected];
		}
		return 0;
	}

	// Returns false if we can't pick up more
	public boolean addItem(int i)
	{
		if (numInInv<6)
		{
			invItem[numInInv]=i;
			currSelected=numInInv++;
			drawInv();
			return true;
		}
		else
		{
			return false;
		}
	}

	// Remove currently Selected
	public void removeFromInv()
	{
		invItem[currSelected]=invItem[numInInv-1];
		numInInv--;
		currSelected=0;
		drawInv();
	}

	// Change currently selected
	public void changeItem()
	{
		currSelected++;
		if (currSelected>=numInInv)
		{
			currSelected=0;
		}
		drawInv();
	}

	// Draw inventory
	public void drawInv()
	{
		int x=20;
		int y=45;
		paper.setColor(Color.black);
		paper.fillRect(0,36,200,50);
		for (int i=0; i<numInInv; i++)
		{
			doDraw(x,y,invItem[i]);
			if (currSelected==i)
			{
				paper.setColor(Color.white);
				paper.drawRect(x-2,y-2,22,22);
				paper.setColor(Color.black);
			}
			x+=25;
		}
	}

	// Draw image at x, y, xoff is offset in large image
	public void doDraw(int xabs, int yabs, int xoff)
	{
		int yoff=0;

		if (xoff>0)
		{
			yoff=((int)xoff/10)*20;
			xoff%=10;
			xoff*=20;
			paper.drawImage(gfx,
				xabs, yabs, xabs+20, yabs+20,
				xoff, yoff, xoff+20, yoff+20,
				null);
		}
		else
		{
			paper.fillRect(xabs, yabs, 20,20);
		}
	}

}