animation.java

手机游戏中的动画和CG是怎么做的呢

import javax.microedition.midlet.MIDlet;
import javax.microedition.lcdui.*;
import javax.microedition.lcdui.game.Sprite;

import java.io.*;
//import javax.microedition.lcdui.game.Sprite;
//import com.nttdocomo.ui.Canvas;
//import java.util.*;

public class Animation extends MIDlet {
	private Action m_Action	= null;
	
	public Animation() throws IOException {
		m_Action = new Action();
		Display.getDisplay(this).setCurrent(m_Action);
	}

	protected void startApp() {
		//m_tGame.repaint ();
	}

	protected void pauseApp() {
		// TODO Auto-generated method stub
		System.out.println("train pause the app");
	}

	protected void destroyApp(boolean arg0)  {
		// TODO Auto-generated method stub
		System.out.println("train destory the app");
	}
}	

class Action extends Canvas implements Runnable{
	public final static int ID_WATER_PNG	= 22;
	public Image m_Image;
	
	private Thread thread;
	
	public short m_nCount;		//the total count of animations
	public short m_size1;		//one animation data size(maybe not useful)
	public short m_imageID;		//the image ID of the current animation
	public short m_mCount;		//the total count of modules for current animation
	public byte m_modules[];	//the module data(modX,modY,modW,modH)
	public short m_fCount;		//the total count of frames for current animation	
	
	public byte m_size2;			//the size of every frame data (maybe not useful)
	public byte m_flag;			//(flag & 0x80) != 0,the current frame has the collide box;(flag & 0x40) != 0,the current frame has the attackBox
	public byte m_num;			//the number of sprites for current frame
	public byte m_sprites[][];		//[frame][data]		the all sprites data for current frame. [modID,flag(bit0:flipX,bit1:flipY,bit2:rotateFlag), X, Y] * num; 
	public byte m_colData[];		//4 bytes				if((flag & 0x80) != 0) it will read 4 bytes for collide box,otherwise please do not read
	public byte m_attData[];		//4 bytes				if((flag & 0x40) != 0) it will read 4 bytes for attack box,otherwise please do not read


	public short m_actionCount;		//the total count of actions 
	 						//.......................loop 'actionCount' times
	public byte m_size3;				//the size of current action data
	public byte m_number;			//the number of frames for current action
	public byte m_framesData[][];	//[action][data]	 the frame data for current data [frameID,duration]*number
	public byte m_mechModelID;		//the ID of mechModel (maybe not useful)			
	public short m_mechModel[];		// (size3 - 1 - number * 2 - 1)/2          the data of mechModel					
							// ./......................loop
	
	public int m_actionPosX = 100,m_actionPosY = 100; 	//the pos of action
	public byte m_curNumber;				//the number of current frame
	public short m_delay;					//the time of delay 
//	static Image m_bufCanvas;	
//	static Graphics m_bufScreen;
	
	public Action() throws IOException{
		ReadFile();
//		m_bufCanvas = Image.createImage(getWidth(),getHeight());
//		m_bufScreen = m_bufCanvas.getGraphics();
		m_delay = 0;
		thread = new Thread(this);
		thread.start();
	}
	public void run() {
		// TODO Auto-generated method stub		
		for(;;)
		{

			try {
//				s_Thread.sleep(100);
				Thread.sleep(50);
				
			} catch (InterruptedException e) {

				e.printStackTrace();
			}
			repaint();
			serviceRepaints();			
		}
	}
	protected void paint(Graphics g) {
		g.setColor(0);
		g.fillRect(0, 0, getWidth(), getHeight());
		doAction(g,m_actionPosX,m_actionPosY);
	}
	
	public void doAction(Graphics g,int PosX,int PosY) {
		short frameDelay;
		
		System.out.println(m_curNumber);
		if(m_curNumber > m_number-1)
			m_curNumber = 0;
		
		frameDelay = m_framesData[/*actionID*/0][m_curNumber*2+1];
		short drawingFrame = m_framesData[0][m_curNumber*2];
		if(m_delay < frameDelay){
//			short drawingFrame = m_framesData[0][m_curNumber*2];
        	drawFrame(g, drawingFrame, PosX, PosY,false,false);
        	m_delay++;
		}
		else{
        	drawFrame(g, drawingFrame, PosX, PosY,false,false);
			m_delay = 0;
			m_curNumber ++;
		}
	}
	
	public void drawFrame(Graphics g,short drawingFrame,int PosX,int PosY,boolean flipX,boolean flipY) {

	    int modID, flag, modX, modY, modW, modH; 	//module info
	    byte[] s = m_sprites[drawingFrame]; 		//sprite's info
	    int posX, posY, dgflag = 0; 				//sprite's map coordinate.\
	    boolean flipXs, flipYs; 					//final sprite flip info
		System.out.println(22222);

		for(int i = 0; i<s.length; i+=4)
		{
			modID = (s[i] & 0xff)<<2;

			flag = s[i+1] & 0xff;
			
			modX = (int)(m_modules[modID] & 0xff);
			modY = (int)(m_modules[modID+1] & 0xff);
			modW = (int)(m_modules[modID+2] & 0xff);
			modH = (int)(m_modules[modID+3] & 0xff);
			
	        flipXs = flipX ^ ((flag & 0x01) != 0);
	        flipYs = flipY ^ ((flag & 0x02) != 0);
	        
	        posX = PosX;
	        posY = PosY;

	        if ( flipX )
	            posX -= s[i + 2];
	        else posX += s[i + 2];	
	        if ( flipY )
	            posY -= s[i + 3];
	        else posY += s[i + 3];
	        

	        posX -= flipXs ? modW : 0;
	        posY -= flipYs ? modH : 0;
	        
	        if (flipXs)
	            dgflag ^= Sprite.TRANS_MIRROR;
	        if (flipYs)
	            dgflag ^= Sprite.TRANS_MIRROR_ROT180;

	        if (posY > getHeight()|| posY + modH < 0
	            || posX > getWidth() || posX + modW < 0)
	            continue;
	        
	        if (posY + modH > getHeight())
	            g.setClip(posX, posY, modW, getHeight() - posY);
	        else if (posY < 0)
	             g.setClip(posX, 0, modW, modH + posY);
	        else g.setClip(posX, posY, modW, modH);
			System.out.println(3333);

			System.out.println("modX = " + modX);
			System.out.println("modY = " + modY);
			System.out.println("modW = " + modW);
			System.out.println("modH = " + modH);
			System.out.println("posX = " + posX);
			System.out.println("posY = " + posY);
			System.out.println(dgflag);
	        if (dgflag == 0)
	        	g.drawImage(m_Image, posX - modX, posY - modY, Graphics.LEFT|Graphics.TOP);
	         else 
	        	g.drawRegion(m_Image, modX, modY, modW,
	        			 modH, dgflag, posX, posY, 
	        			 Graphics.LEFT|Graphics.TOP);
		}
			
	}
	private void ReadFile() throws IOException {

		InputStream is = getClass().getResourceAsStream("/a.bin");
		DataInputStream dis = new DataInputStream(is);
		
		m_nCount	= dis.readShort();
		m_size1 = dis.readShort();
		m_imageID = dis.readShort();
		m_Image = Image.createImage("/water.png");
		m_mCount = dis.readShort();
		
		System.out.println("m_nCount = " + m_nCount);
		System.out.println("m_size1 = " + m_size1);
		System.out.println("m_imageID = " + m_imageID);
		System.out.println("m_mCount = " + m_mCount);
		
		m_modules = new byte[m_mCount*4];
		for (int i = 0; i < m_mCount*4; i++) {
			m_modules[i] = dis.readByte();
			System.out.print("m_modules["+i+"]= " + m_modules[i]+" / ");
		}
		System.out.println();
		
		m_fCount = dis.readShort();
		System.out.println("m_fCount = " + m_fCount);
		
		//the data from every frame
		m_sprites = new byte[m_fCount][];//这个4表示第个frame里含一个sprite,要改；假如第个frame中的sprite不一样多，怎么办呢？
		for (int i = 0; i < m_fCount; i++) {
			m_size2 = dis.readByte();
			m_flag  = dis.readByte();
			m_num   = dis.readByte();

			System.out.println("size2 = " + m_size2);
			System.out.println("flag = " + m_flag);
			System.out.println("num = " + m_num);
			
			m_sprites[i] = new byte[m_num*4];
			dis.read(m_sprites[i]);

			System.out.println();
			if((m_flag & 0x80) != 0){
				m_colData = new byte[4];
				dis.read(m_colData);
				for (int j = 0; j < 4; j++) {
					System.out.print("colData["+j+"] = " + m_colData[j]+" / ");
				}
			}//if

			if((m_flag & 0x40) != 0){
				m_attData = new byte[4];
				dis.read(m_attData);
				for (int j = 0; j < 4; j++) {
					System.out.print("attData["+j+"] = " + m_attData[j]+" / ");
				}
			}//if
			
		}//for-fame
		//get the data from sprites[][]
		for (int i = 0; i < m_fCount; i++) {
			for (int j = 0; j < m_num*4; j++) {
				System.out.print("sprites["+i+"]["+j+"] = " + m_sprites[i][j]+" / ");
			}			
			System.out.println();
		}

		System.out.println();

		m_actionCount = dis.readShort();
		System.out.println("actionCount = " + m_actionCount);
		m_framesData = new byte[m_actionCount][];//number*2];好郁闷，怎么申请啊？
		for (int i = 0; i < m_actionCount; i++) {
			m_size3 = dis.readByte();
			m_number = dis.readByte();

			System.out.println("size3 = " + m_size3);
			System.out.println("number = " + m_number);
			
			m_framesData[i] = new byte[m_number*2];
			dis.read(m_framesData[i]);
			
			m_mechModelID = dis.readByte();	
			System.out.println("mechModelID = " + m_mechModelID);
			int temp = (m_size3 - 1 - m_number * 2 - 1)/2;
			m_mechModel = new short[temp];		//  the data of mechModel					
			for (int j = 0; j < temp; j++) {
				m_mechModel[j] = dis.readShort();
				System.out.print("mechModel["+j+"] = " + m_mechModel[j]+" / ");
			}
			System.out.println();
		}
		//get the data from framesData[i][j]
		for (int i = 0; i < m_actionCount; i++) {
			for (int j = 0; j < m_number*2; j++) {
				System.out.print("framesData["+i+"]["+j+"] = " + m_framesData[i][j]+" / ");
			}			
			System.out.println();
		}

	}
	
}