map.java

a java game code for java

//Source file: d:/MyProjects/Java/eatbean/eatbean/Map.java

package eatbean;

import java.awt.*;
//
import eatbean.util.*;

public class Map {
	private int elements_width;
	private int elements_height;
	private int[][] elements;
	private int absX;
	private int absY;
	private Mediator mediator;
	/** 地图对象元素数组/矩阵 */
	private MapElement mapElements[][] = null;
	/** Fairy初始时所在Room的数组索引 */
	private Pos fairyBornPos = null;
	/** Sprite初始时所在Room的数组索引 */
	private Pos spriteBornPos = null;
	private int width, height;
	/** 豆子数 */
	private int beanNum = 0;

	public Map(Mediator m, int[][] e, int absX, int absY) throws Exception {
		this.mediator = m;
		this.elements = e;
		elements_height = this.elements.length;
		elements_width = this.elements[0].length;
		this.absX = absX;
		this.absY = absY;
		mapElements = createElements();
		width = elements_width * MapElement.ELEMENT_MAX_SIZE;
		height = elements_height * MapElement.ELEMENT_MAX_SIZE;
	}
	public int getWidth() { return width; }
	public int getHeight() { return height; }

	/** 绘制地图 */
	public void paint() {
		if(Debug.ON) System.out.println("Enter Map.paint()...");
		OffScreen offScreen = mediator.getOffScreen();
		offScreen.clear();
		for (int y = 0; y < elements_height; y++) {
			for (int x = 0; x < elements_width; x++) {
				mapElements[y][x].draw(offScreen);
			}
		}
	}
	public void paint(Pos pos) {
		OffScreen offScreen = mediator.getOffScreen();
		mapElements[pos.y][pos.x].draw(offScreen);
	}
	public final int[][] getMapIntElements() {
		return elements;
	}
	private MapElement[][] createElements()  throws Exception {
		if(Debug.ON) Debug.println("createElements()...");
		MapElement[][] result = new MapElement[elements_height][elements_width];
		int posX = absX,
			posY = absY;
		for (int y = 0; y < elements_height; y++)
			for (int x = 0; x < elements_width; x++) {
				if(x <= 0)
					posX = absX;
				else
					posX = result[y][x-1].getRight();
				if(y <= 0)
					posY = absY;
				else
					posY = result[y-1][x].getBottom();
				if(elements[y][x]/Wall.BASE_NUM == 1)
					result[y][x] = new Wall(elements[y][x], posX, posY);
				else if(elements[y][x]/Door.BASE_NUM == 1)
					result[y][x] = new Door(elements[y][x], posX, posY);
				else if(elements[y][x]/Room.BASE_NUM == 1) {
					result[y][x] = new Room(elements[y][x], posX, posY);
					if(elements[y][x] == Room.STYLE_SPRITE_BORN)
						spriteBornPos = new Pos(x, y);
					else if(elements[y][x] == Room.STYLE_FAIRY_BORN)
						fairyBornPos = new Pos(x, y);
					if(elements[y][x] == Room.STYLE_DEFAULT) beanNum++;
				} else
					throw new Exception("地图初始化失败: 存在不可识别的元素:"
										    + Integer.toString(elements[y][x]) + "  x: "
										    + Integer.toString(x) + "   y: "
											+ Integer.toString(y));
		} // end for
		if(spriteBornPos == null)
			throw new Exception("地图初始化失败: 找不到Room.STYLE_SPRITE_BORN类型的元素");
		if(fairyBornPos == null)
			throw new Exception("地图初始化失败: 找不到Room.STYLE_FAIRY_BORN类型的元素");
		return result;
	}
	public Pos getFairyBornPos() {
		//if(fairyBornPos == null) return null;
		return (Pos)fairyBornPos.clone();
	}
	public Pos getSpriteBornPos() {
		//if(spriteBornPos == null) return null;
		return (Pos)spriteBornPos.clone();
	}
	public MapElement getElement(Pos pos) {
		if((pos.x < 0 || pos.x >= elements_width)
								|| (pos.y < 0 || pos.y >= elements_height))
			return null;
		else
			return mapElements[pos.y][pos.x];
	}
	public int getBeanNum() { return beanNum; }
	public void decBeanNum() { beanNum--; }
}