package?Tennis;

import?com.sun.j3d.utils.behaviors.vp.OrbitBehavior;
import?com.sun.j3d.utils.geometry.*;
import?com.sun.j3d.utils.universe.*;
import?com.sun.j3d.utils.image.*;
import?javax.media.j3d.*;
import?javax.vecmath.*;

class?Ball?extends?VirtualEntity
{
	public?double?elapsed?=?0;
	public?long?lastCollisionTime?=?0;
	public?Vector3d?lastCollision?=?new?Vector3d（0?0?0）;

	public?Vector3d?pos?=?new?Vector3d（0?TennisGame.BALL_RADIUS?0）;
	public?Vector3d?dir?=?new?Vector3d（0?0?0）;

	private?Shadow?bShadow;

	public?double?speed?=?0.0;
	public?boolean?stopped?=?true;

	Ball（）
	{	models?=?new?Shape3D[1];
		mtrans?=?new?Transform3D[]{?new?Transform3D（）?};

		Appearance?a?=?getStdAppearance（“textures/tball.gif“?Material.DIFFUSE?false）;

		Material?m?=?a.getMaterial（）;
		m.setSpecularColor（0f?0f?0f）;

		a.setMaterial（m）;

		Sphere?s?=?new?Sphere（TennisGame.BALL_RADIUS?PRIMFLAGS?10?a）;
		models[0]?=?s.getShape（Sphere.BODY）;

		bShadow?=?new?Shadow（0.5f?true）;
	}

	public?synchronized?void?changeDir（double?x?double?y?double?z?double?s）
	{	speed?=?s;
		stopped?=?（speed?==?0）;

		dir.set（x?y?z）;
		setLastCollision（）;
	}

	public?synchronized?void?setForService（）
	{
//		TennisGame.court.lastZ?=?0;
		changeDir（0?0?0?0）;

		pos.x?=?TennisGame.players[TennisGame.curServer].pModel.worldX?+?（0.25?*?TennisGame.serveSide）;
		pos.z?=?TennisGame.players[TennisGame.curServer].pModel.worldZ;
		pos.y?=?1.5;

		bShadow.update（pos）;
	}

	private?double?tempRads?=?0.0;

	public?synchronized?void?setShot（double?x?double?z?int?sType?double?s）
	{	dir.set（x?-?pos.x?0?z?-?pos.z）;

		if（sType?==?0）	//?normal?shot?-?set?dir.y?to?+?1.0?instead?of?+?0.5?for?different?results
		{	//dir.normalize（）;
			//dir.y?=?（（TennisGame.NET_HEIGHT?*?2?+?1.0）?+?（（Math.abs（pos.z）?/?dir.z）?*?（GAME_SPEED?*?TennisGame.GRAVITY）））?/?（TennisGame.COURT_LENGTH?/?2.0）;
			//speed?=?（TennisGame.MAX_SPEED?*?0.5）?+?Math.max（s?*?0.5?1）;

//				dir.y?=?（TennisGame.NET_HEIGHT?*?2?+?1.5）;//?/?Math.min（Math.max（Math.abs（pos.z?/?（TennisGame.COURT_LENGTH））?0.8）?1.0）;

			tempRads?=?Math.atan（（TennisGame.NET_HEIGHT?*?4.0）?/?Math.min（Math.max（Math.abs（pos.z）?TennisGame.COURT_LENGTH?*?0.65）?TennisGame.COURT_LENGTH?*?0.9））;?//（TennisGame.COURT_LENGTH?*?0.9））;?//?angle?of?shot?is?function?of?court?length?and?net?height
			dir.y?=?（dir.length（）?/?Math.cos（tempRads））?*?Math.sin（tempRads）;	//?straight?shot?=?variable?degrees
			speed?=?5.0?+?15.0?*?Math.abs（pos.z?/?TennisGame.COURT_LENGTH）?+?s?*?10.0;
		}
		else?if（sType?==?1）
		{	dir.y?=?（dir.length（）?/?Math.cos（Math.PI?/?3.25））?*?Math.sin（Math.PI?/?3.25）;	//?lob?=?55?degrees
			speed?=?8.0?+??s?*?9.5;	//?min?speed?=?8.0?max?=?17.5
		}
		else?if?（sType?==?2）
		{	dir.y?=?（dir.length（）?/?Math.cos（Math.PI?/?6.0））?*?Math.sin（Math.PI?/?6.0）;	//?drop?=?30?degrees
			speed?=?5.0?+?s?*?4.0;	//?max?=?9.0
		}
		else?if（sType?==?3）
		{	dir.y?=?0;
			dir.norma

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????4533??2004-06-17?04:22??網(wǎng)球大賽\Ball.java

?????文件???????2616??2004-06-17?04:22??網(wǎng)球大賽\Camera.java

?????文件???????7366??2004-06-17?04:22??網(wǎng)球大賽\CommThread.java

?????文件?????????50??2004-06-17?04:35??網(wǎng)球大賽\compile.bat

?????文件??????18009??2004-04-11?20:02??網(wǎng)球大賽\COPYING.txt

?????文件??????18075??2004-06-17?04:22??網(wǎng)球大賽\Court.java

?????文件???????4519??2004-06-08?04:01??網(wǎng)球大賽\hs_err_pid3960.log

?????文件?????380761??2003-05-26?18:19??網(wǎng)球大賽\max.ms3d

?????文件????????198??2004-06-17?04:22??網(wǎng)球大賽\Message.java

?????文件???????9038??2004-06-17?04:22??網(wǎng)球大賽\Player.java

?????文件?????????46??2004-06-17?04:36??網(wǎng)球大賽\run.bat

?????文件???????5868??2004-06-17?04:22??網(wǎng)球大賽\ScoreBoard.java

?????文件???????1144??2004-06-17?04:22??網(wǎng)球大賽\Shadow.java

?????文件???????1622??2004-06-17?04:22??網(wǎng)球大賽\SplashScreen.java

?????文件???????1464??2004-06-17?04:38??網(wǎng)球大賽\src_tennisgame.txt

?????文件???????8697??2004-06-17?04:22??網(wǎng)球大賽\Tennisframe.java

?????文件??????13804??2004-06-17?04:22??網(wǎng)球大賽\TennisGame.java

?????文件??????52994??2008-09-24?11:06??網(wǎng)球大賽\TennisGame.jcd

?????文件???????2009??2004-06-17?04:39??網(wǎng)球大賽\TennisGame.jcp

?????文件???????3703??2004-06-17?04:39??網(wǎng)球大賽\TennisGame.jcu

?????文件????????265??2004-06-17?04:39??網(wǎng)球大賽\TennisGame.jcw

?????文件??????10839??2004-06-17?04:22??網(wǎng)球大賽\TennisLaunch.java

?????文件???????2047??2004-06-17?04:22??網(wǎng)球大賽\VirtualEntity.java

?????文件?????146414??2003-05-23?18:27??網(wǎng)球大賽\audio\aaah.wav

?????文件?????467988??2004-06-06?15:13??網(wǎng)球大賽\audio\applause.wav

?????文件??????33934??2003-03-06?18:02??網(wǎng)球大賽\audio\ballhit.wav

?????文件???????5412??2003-04-14?10:26??網(wǎng)球大賽\audio\beep.wav

?????文件?????138354??2002-02-20?00:45??網(wǎng)球大賽\audio\crowdcheer.wav

?????文件????1470062??2004-06-06?07:17??網(wǎng)球大賽\audio\exhort.wav

?????文件??????59666??2003-05-23?16:51??網(wǎng)球大賽\audio\firstserve.wav

............此處省略143個(gè)文件信息