多媒体展示系统java代码

//Fish定义了一条鱼游动的一些参量以及如何在Panel上显示鱼 package fish; import java.util.Random; public class Fish extends Thread{ private Random rand = new Random(); int fishID; //鱼的ID号 int x; //该鱼的x坐标 int y; //该鱼的y坐标 int width; //该鱼使用的图片的宽度 int height; //该鱼使用的图片的高度 //随机产生鱼初始游的方向 int down = rand.nextInt(10)%2;//down=1 : 向下游;down=0 : 向上游 int right = rand.nextInt(10)%2;//right=1: 向右游 //用来控制刷新周期,sleepTime越小,两次刷新之间的时间间隔就越小,从而速度就越快 private int sleepTime = rand.nextInt(50); //随机产生斜游角度比x:y=angle,即在x方向上游动angle次之后才在y方向上移动一次 private int angle = rand.nextInt(5)+2; //随机产生鱼上下左右游动的最大上限，即振幅 private int xSwing = rand.nextInt(1500); private int ySwing = rand.nextInt(800); private int countXSwing = 0;//x方向上振幅计数 private int countYSwing = 0;//y方向上振幅计数 //一个数组，包含了上述除了鱼ID的所有参量 private int[] fishStates = new int[12]; boolean isRunning; private FishPanel panel; public Fish(int fishID,int x,int y,int width,int height,FishPanel panel,boolean isRunning){ this.fishID = fishID; this.x = x; this.y = y; this.width = width; this.height = height; this.panel = panel; this.isRunning = isRunning; this.start(); } public Fish(int fishID,int[] state,FishPanel panel,boolean isRunning){ this.fishID = fishID; this.x = state[0]; this.y = state[1]; this.width = state[2]; this.height = state[3]; this.down = state[4]; this.right = state[5]; this.sleepTime = state[6]; this.angle = state[7]; this.xSwing = state[8]; this.ySwing = state[9]; this.countXSwing = state[10]; this.countYSwing = state[11]; this.panel = panel; this.isRunning = isRunning; this.start(); } public void run() { while(isRunning) { computeX(); computeY(); try { sleep(sleepTime);//sleepTime } catch(Exception ex){ ex.printStackTrace(); } panel.repaint(); } } public void reStart(){ this.isRunning = true; } public void halt() { this.isRunning = false; } public void computeX(){ if(right == 1){ if(countXSwing == xSwing) {//判断是否到右端边框或达到最大振幅 right=0; reset('x'); } if(x >= panel.getWidth()){ this.x = -width; StringBuffer buffer = new StringBuffer(); int[] states = this.getFishStates(); for(int i = 0 ;i < states.length;i ++){ if(i!=0)buffer.append(FishConstants.ARRAY_SEPARATOR); buffer.append(states[i]); } buffer.append('\n'); panel.messageManager.sendMessage(Integer.toString(this.fishID),buffer.toString()); //reset('x'); this.halt(); } x++; } else { if(countXSwing == xSwing) {//判断是否到左端边框或达到最大振幅 right=1; reset('x'); } if(x+width <= 0){ this.x = panel.getWidth(); StringBuffer buffer = new StringBuffer(); int[] states = this.getFishStates(); for(int i = 0 ;i < states.length;i ++){ if(i!=0)buffer.append(FishConstants.ARRAY_SEPARATOR); buffer.append(states[i]); } buffer.append('\n'); panel.messageManager.sendMessage(Integer.toString(this.fishID),buffer.toString()); this.halt(); } x--; } countXSwing++; } //计算鱼的上下游动 public void computeY(){ //判断随机数l是否为0，是则水平游动，否则计算角度 if(countXSwing%angle == 0){ if(down == 1)//x former {//down=1表示向下游且当x++或x--了l次后，y++ if( countYSwing == ySwing) {//判断是否到底或上下振幅游满否 down=0; reset('y'); } if(y >= panel.getHeight()){ this.y = -height; StringBuffer buffer = new StringBuffer(); int[] states = this.getFishStates(); for(int i = 0 ;i < states.length;i ++){ if(i!=0)buffer.append(FishConstants.ARRAY_SEPARATOR); buffer.append(states[i]); } buffer.append('\n'); panel.messageManager.sendMessage(Integer.toString(this.fishID),buffer.toString()); this.halt(); //reset('y'); } y++; } else if(countXSwing%angle == 0)//x former {//当向上游且当x++或x--了l次之后,y-- if(countYSwing == ySwing) { down=1; reset('y'); } if(y+height <= 0) { this.y = panel.getHeight(); StringBuffer buffer = new StringBuffer(); int[] states = this.getFishStates(); for(int i = 0 ;i < states.length;i ++){ if(i!=0)buffer.append(FishConstants.ARRAY_SEPARATOR); buffer.append(states[i]); } buffer.append('\n'); panel.messageManager.sendMessage(Integer.toString(this.fishID),buffer.toString()); this.halt(); //reset('y'); } y--; } countYSwing++; } } public void reset(char direction){ //鱼游动状态改变后重新生成各项数值 if(direction=='x') { xSwing = rand.nextInt(1500);//重新生成新的左右振幅(判断依据：x) countXSwing = 0; //左右振幅计数清0 } else { ySwing = rand.nextInt(800);//重新生成新的上下振幅(判断依据：y) countYSwing = 0;//上下振幅计数清0 } sleepTime = rand.nextInt(50);//重新生成新的速度 angle = rand.nextInt(5)+2;//重新生成新的角度比 } public int[] getFishStates(){ fishStates[0] = this.x; fishStates[1] = this.y; fishStates[2] = this.width; fishStates[3] = this.height; fishStates[4] = this.down; fishStates[5] = this.right; fishStates[6] = this.sleepTime; fishStates[7] = this.angle; fishStates[8] = this.xSwing; fishStates[9] = this.ySwing; fishStates[10] = this.countXSwing; fishStates[11] = this.countYSwing; return fishStates; } }