board.java

斜45度游戏《NetIntruder》

package isoj2me;

import java.util.*;

import javax.microedition.lcdui.*;

/**
 * <p>
 * isoj2me: Board
 * </p>
 * <p>
 * This is the main class. It manages a Board where you can add, remove and move
 * Characters and Items. It manages Maps too. This class perform the draw method
 * to paint the Board on the device
 * </p>
 * <p>
 * Copyright: Copyright (c) 2006
 * </p>
 * <p>
 * License: Lesser GPL (http://www.gnu.org)
 * </p>
 * <p>
 * Company: <a href=http://www.mondonerd.com target="_blank">Mondonerd.com</a>
 * </p>
 * 
 * @author Massimo Maria Avvisati
 * @version 0.5
 */

public class Board {
	public static Hashtable tiles = new Hashtable(12); //TODO this value have to be a variable to optimize the result

	/**
	 * This one of the main method of this class. It paint on the given Graphics
	 * the board with its tiles and characters.
	 * 
	 * @param x
	 *            where to paint on the Graphics (x)
	 * @param y
	 *            where to paint on the Graphics (y)
	 * @param cellX
	 *            starting cell on the map (x)
	 * @param cellY
	 *            starting cell on the mpa (y)
	 * @param width
	 *            width of the map area to be painted (starting from cellX)
	 * @param height
	 *            height of the map area to be painted (starting from cellY)
	 * @param g
	 *            Graphics object where to paint
	 */

	public int cellX = 0;

	public int cellY = 0;
	public int charactersClipWidth = 60;
    public int charactersClipHeight = 60;
	public Hashtable characters = new Hashtable(1);

	private Hashtable charactersPositions = new Hashtable(1);

//	public Hashtable items = new Hashtable();
//
//	private Hashtable itemsPositions = new Hashtable(20);

	public Map map;

	public String tileSet = "";

	public int tileWidth, tileHeight;

	public int width, height;

	/**
	 * Constructor. The tileset basic name will be an empty string.
	 */

	public Board() {
	}

	/**
	 * Constructor. The tileset basic name will be tileSet and it will be used
	 * when loading tiles image files.
	 * 
	 * @param tileSet
	 *            basic name for tile files
	 */
    private Canvas canvas = null;
	public Board(String tileSet, Canvas canvas) {
        this.canvas = canvas;
		this.tileSet = tileSet;
	}

	/**
	 * This method call the Map() constructor passing the base name for the map
	 * files and the number of layers
	 * 
	 * @param baseFilename
	 *            base name for the map files
	 * @param numberOfLayers
	 *            number of layers to load
	 */

	public void createMap(String baseFilename, int numberOfLayers) {
		map = new Map(baseFilename, numberOfLayers);
	}

	boolean lastDrawn = false;

	int initI = 0;

	int lastI = 30;

	public void drawTile(int mapX, int mapY, int x, int y, Graphics g) {
		Image tempImage = null;
        if (map.layers[0][(mapY * map.getWidth()) + mapX] != 48) {
		try {
			String imageCode = ""
					+ map.layers[0][(mapY * map.getWidth()) + mapX];
			tempImage = Utility.loadImage(tileSet + imageCode, tiles);
		} catch (Exception e) {

		}
		if (tempImage != null) {
			g.drawImage(tempImage, x - (tempImage.getWidth() / 2), y
					- tempImage.getHeight() + tileHeight * 2, Graphics.TOP
					| Graphics.LEFT);
		}
        }
	}

	public void drawCharacter(int mapX, int mapY, int x, int y, Graphics g) {
		// Paint characters

		if (charactersPositions.containsKey(mapX + "_" + mapY + "_0")) {
			isoj2me.Character tempCharacter = (isoj2me.Character) charactersPositions
					.get(mapX + "_" + mapY + "_0");
			int tempCharX = x + (-tempCharacter.getCurrentImage().getWidth())
					/ 2;

			if ("player".equals(tempCharacter.name)) {
				int xMod = 0;
				int yMod = 0;
//                if (tempCharacter.speed > 2) {
//                    tempCharacter.speed = 2;
//                }
				if (tempCharacter.getCurrentAction().indexOf("SW") > 0) {
					// System.out.println("SW");
					if (tempCharacter.speed > 2) {
						// System.out.println("Step 1");
						tempCharacter.speed = 2;
						xMod = +11;
						yMod = -5;

					} else if (tempCharacter.speed > 1) {
						// System.out.println("Step 2");
						tempCharacter.speed = 1;
						xMod = +8;
						yMod = -4;
					} else if (tempCharacter.speed > 0) {
						// System.out.println("Step 3");
						tempCharacter.speed = 0;
						tempCharacter.isMoving = false;
					}
				} else if (tempCharacter.getCurrentAction().indexOf("NW") > 0) {
					// System.out.println("NW");
					if (tempCharacter.speed > 2) {
						// System.out.println("Step 1");
						tempCharacter.speed = 2;
						xMod = +11;
						yMod = +5;

					} else if (tempCharacter.speed > 1) {
						// System.out.println("Step 2");
						tempCharacter.speed = 1;
						xMod = +8;
						yMod = +4;
					} else if (tempCharacter.speed > 0) {
						// System.out.println("Step 3");
						tempCharacter.speed = 0;
						tempCharacter.isMoving = false;
					}
				} else if (tempCharacter.getCurrentAction().indexOf("SE") > 0) {
					// System.out.println("SE");
					if (tempCharacter.speed > 2) {
						// System.out.println("Step 1");
						tempCharacter.speed = 2;
						xMod = -11;
						yMod = -5;

					} else if (tempCharacter.speed > 1) {
						// System.out.println("Step 2");
						tempCharacter.speed = 1;
						xMod = -8;
						yMod = -4;
					} else if (tempCharacter.speed > 0) {
						// System.out.println("Step 3");
						tempCharacter.speed = 0;
						tempCharacter.isMoving = false;
					}
				} else if (tempCharacter.getCurrentAction().indexOf("NE") > 0) {
					// System.out.println("NE");

					if (tempCharacter.speed > 2) {
						// System.out.println("Step 1");
						tempCharacter.speed = 2;
						xMod = -11;
						yMod = +5;

					} else if (tempCharacter.speed > 1) {
						// System.out.println("Step 2");
						tempCharacter.speed = 1;
						xMod = -8;
						yMod = +4;
					} else if (tempCharacter.speed > 0) {
						// System.out.println("Step 3");
						tempCharacter.speed = 0;
						tempCharacter.isMoving = false;
					}
				}
				tempCharacter.draw(tempCharX + xMod, y + yMod, g);
				tempCharacter.lastDrawnX = tempCharX + xMod
						+ tempCharacter.getCurrentImage().getWidth() / 2;
				tempCharacter.lastDrawnY = y + yMod
						- tempCharacter.getCurrentImage().getHeight() / 2
						+ tempCharacter.modifierY;

			} else {
				tempCharacter.draw(tempCharX, y, g);
				tempCharacter.lastDrawnX = tempCharX
						+ tempCharacter.getCurrentImage().getWidth() / 2;
				tempCharacter.lastDrawnY = y
						- tempCharacter.getCurrentImage().getHeight() / 2
						+ tempCharacter.modifierY;
				tempCharacter.speed = 0;
				tempCharacter.isMoving = false;
			}
		}
	}

//	private void drawItem(int mapX, int mapY, int x, int y, Graphics g) {
//		// Paint items
//
//		if (itemsPositions.containsKey(mapX + "_" + mapY + "_0")) {
//			Item tempItem = (Item) itemsPositions.get(mapX + "_" + mapY + "_0");
//			Image tempImage = tempItem.getCurrentImage();
//			g.drawImage(tempImage, x - (tempImage.getWidth() / 2), y
//					- tempImage.getHeight() + tileHeight * 2, Graphics.TOP
//					| Graphics.LEFT);
//		}
//	}

	public Image cachedBoard = null;

	public boolean changed = true;

	// Image characterBoard = null;
	//Image cuttedBoard = null;

	//int characterCounter = 0;

	private int clipWidth;

	private int clipHeight;

	public void draw(int x, int y, Graphics gInit, boolean centered) {
		Character c = null;
		if (!centered) {
			cachedBoard = Image.createImage(gInit.getClipWidth(), canvas.getHeight());
			drawEmpty(x, y, cachedBoard.getGraphics(), true);
			gInit.drawImage(cachedBoard, 0, 0, Graphics.TOP | Graphics.LEFT);
		} else {
			if (changed || cachedBoard == null) {
				cachedBoard = Image.createImage(gInit.getClipWidth(), canvas.getHeight());
				drawEmpty(x, y, cachedBoard.getGraphics(), false);
				gInit
						.drawImage(cachedBoard, 0, 0, Graphics.TOP
								| Graphics.LEFT);

				changed = false;
			} else {

				gInit
						.drawImage(cachedBoard, 0, 0, Graphics.TOP
								| Graphics.LEFT);
				Enumeration charEnum = characters.elements();
				int charactersCounter = 0;
				for (Enumeration iter = charEnum; iter.hasMoreElements();) {
				
				c = (Character) iter.nextElement();
				//if (c.x >= cellX && c.y >= cellY && c.x < cellX + width && c.y < cellY + height) { //TODO verify
				if (true) {
					charactersCounter++;
					clipWidth = gInit.getClipWidth();
					clipHeight = canvas.getHeight();
					int clipWidthTemp = charactersClipWidth; //TODO configuration
					int clipHeightTemp = charactersClipHeight; //TODO configuration
					
						gInit.setClip(c.lastDrawnX - clipWidthTemp / 2,
				
							c.lastDrawnY - clipHeightTemp / 2, clipWidthTemp,
							clipHeightTemp);

					drawCharacterBoard(c, x, y, gInit);
					// characterboard on
					// draw
					gInit.setClip(0, 0, clipWidth, clipHeight);
				}

				}
			}

		}

	}

	boolean repaint = true;

	public void drawEmpty(int x, int y, Graphics gInit, boolean withPlayer) {
		gInit.setColor(0x000000);
		gInit.fillRect(0, 0, gInit.getClipWidth(), canvas.getHeight());
		boolean firstPainted = false;
		int xTemp = x;
		int yTemp = 0;
		int xInit = x;
		lastDrawn = false;

		//int lastItemp = lastI;
		for (int i = 0; i < height; i++) { // y cycle (counter is "i")

			yTemp = y + tileHeight * i;
			xTemp = xInit - (tileWidth / 2) * i;
			for (int j = 0; j < height; j++) {

				if (onScreen(xTemp - tileWidth / 2, yTemp, gInit)
						&& (j + cellX < map.getWidth())
						&& (i + cellY) < map.getHeight() && (j + cellX >= 0)
						&& (i + cellY >= 0)) { //TODO verify
// && (map.getCell(0, j + cellX, i + cellY) > 65 || "player".equals(isCharacter(j + cellX, i + cellY, 0)))
					if (firstPainted != true) {
						firstPainted = true;
					}

					
					if (withPlayer) {
						drawCharacter(j + cellX, i + cellY, xTemp, yTemp, gInit);
					} else {
						drawTile(j + cellX, i + cellY, xTemp, yTemp, gInit);
					}

					if (!lastDrawn) {
						lastI = i + 1;
					}
				}
				xTemp = xTemp + tileWidth / 2;