线程简单问题啊--这里逛的虾米们进来看看闹

Question

这是个构造函数？
public runThread(Thread t) {
    if(t==null){
       t= new Thread(this);
       t.start();
    }
}
还是应该为
public void runThread(Thread t){
 ...
}

Answer 1

没有天理啊!!
写一段程序贴出来看看?
public runThread(Thread t) ===> public void runThread(Thread t)

Answer 2

package gui;import map.*;
import java.awt.*;
import javax.swing.*;/**wo
 *  
 * alin 2003-5-22
 */
public class GamePanel extends JPanel implements Runnable {
private Map map;
private Image[] tileImage;
private Image[] agentImage;
private Image[] goodImage;
int agentX;
int agentRowNumber;
int agentY;
int agentLineNumber;
int focusX;
int focusY; private int mapWidth;
private int mapHigh; private final int UP = 1;
private final int BELOW = 2;
private final int LEFT = 3;
private final int RIGHT = 4;
private int previousMoveDirection = 0;
private int agentCurrentPic = 0; Thread runner;
Thread paintThread;
private GamePanelMouseEvent mouseEvent; public GamePanel(
Image[] tI,
Image[] aI,
Image[] gI,
Map mp,
int agentLN,
int agentRN) { mouseEvent = new GamePanelMouseEvent(this);
addMouseListener(mouseEvent); tileImage = tI;
agentImage = aI;
goodImage = gI;
map = mp;
agentLineNumber = agentLN;
agentY = agentLN * 32;
agentRowNumber = agentRN;
agentX = agentRN * 32; mapHigh = map.tiles.length;
mapWidth = map.tiles[0].length; MediaTracker track = new MediaTracker(this); for (int k = 0; k < tileImage.length; k++)
track.addImage(tileImage[k], k); for (int j = 0; j < agentImage.length; j++)
track.addImage(agentImage[j], tileImage.length + j); for (int m = 0; m < goodImage.length; m++)
track.addImage(
goodImage[m],
tileImage.length + agentImage.length + m);
try {
track.waitForAll();
} catch (InterruptedException e) {
}

if(paintThread==null){
paintThread = new Thread(this);
paintThread.start();
}
} public void paintComponent(Graphics comp) {
Graphics2D comp2D = (Graphics2D) comp; //&raquo;&shy;&micro;&Oslash;&AElig;¤:)...
for (int i = 0; i < mapHigh; i++) {
for (int j = 0; j < mapWidth; j++) {
comp2D.drawImage(tileImage[map.tiles[i][j].tile],
//&Igrave;&Oslash;±&eth;×&cent;&Ograve;&acirc;&Otilde;&acirc;&Agrave;&iuml;j&cedil;úi&micro;&Auml;&Euml;&sup3;&ETH;ò!!!-_-
j * 32, i * 32, this);
}
} //&raquo;&shy;agent&Euml;ù&Ocirc;&Uacute;&ETH;&ETH;&Eacute;&Iuml;&Atilde;&aelig;&micro;&Auml;&Icirc;&iuml;&AElig;·&sup2;&atilde;(°ü&Agrave;¨&Otilde;&acirc;&ETH;&ETH;)
for (int i = 0; i <= agentLineNumber; i++) {
for (int j = 0; j < mapWidth; j++) {
if (map.tiles[i][j].good1 != -1)
comp2D.drawImage(
goodImage[map.tiles[i][j].good1],
j * 32,
i * 32,
this);
}
}
//&raquo;&shy;agent
comp2D.drawImage(
agentImage[agentCurrentPic],
agentX,
agentY - 16,
this); //&raquo;&shy;agent&Euml;ù&Ocirc;&Uacute;&ETH;&ETH;&Iuml;&Acirc;&Atilde;&aelig;&micro;&Auml;&Icirc;&iuml;&AElig;·&sup2;&atilde;
if (agentLineNumber != mapHigh - 1) {
for (int i = agentLineNumber + 1; i < mapHigh; i++) {
for (int j = 0; j < mapWidth; j++)
if (map.tiles[i][j].good1 != -1)
comp2D.drawImage(
goodImage[map.tiles[i][j].good1],
j * 32,
i * 32,
this);
}
}
//&raquo;&shy;&Igrave;ì&iquest;&Otilde;&sup2;&atilde;^_^
for (int i = 0; i < mapHigh; i++) {
for (int j = 0; j < mapWidth; j++) {
if (map.tiles[i][j].good2 != -1)
comp2D.drawImage(
goodImage[map.tiles[i][j].good2],
j * 32,
i * 32,
this);
}
}
} public void run() {
while(paintThread == Thread.currentThread()){
repaint();
pause(20);
}
while(runner == Thread.currentThread()) {
moveAgent();
//&Iuml;&Acirc;&Atilde;&aelig;&Oacute;&iuml;&frac34;&auml;°&Ntilde;&Egrave;&Euml;&Icirc;&iuml;&frac12;&Aring;·&Aring;&Iuml;&Acirc;:)
if (previousMoveDirection == LEFT && agentCurrentPic != 6) {
agentCurrentPic = 6;
} else if (
previousMoveDirection == RIGHT && agentCurrentPic != 9) {
agentCurrentPic = 9;
} else if (previousMoveDirection == UP && agentCurrentPic != 3) {
agentCurrentPic = 3;
} else if (
previousMoveDirection == BELOW && agentCurrentPic != 0) {
agentCurrentPic = 0;
}
previousMoveDirection = 0;
stopThread();
}
} public void runThread() {
if (runner == null) {
runner = new Thread(this);
runner.start();
}
} private void stopThread() {
if (runner != null) {
runner = null;
}
}
private void pause(int time) {
try {
Thread.sleep(time);
} catch (InterruptedException e) {
}
} public void moveAgent() {
//&Iacute;&frac14;&AElig;&not;&AElig;&frac12;&Ograve;&AElig;&micro;&Auml;&frac34;à&Agrave;&euml;
int step = 5;
//&Ograve;&AElig;&para;&macr;&Ograve;&raquo;&acute;&Icirc;&frac14;&auml;&cedil;&ocirc;&Ecirc;±&frac14;&auml;
int time = 40;
//&acute;&aelig;·&Aring;&frac14;&Egrave;&para;¨&sup2;&frac12;·&yen;×&szlig;&Otilde;&acirc;&Ograve;&raquo;&sup2;&frac12;&Icirc;&raquo;&Ouml;&Atilde;
int stemp;
int stempTo; if (focusX < agentX) {
stemp = agentX - step;
//&frac14;&Ugrave;&Egrave;&ccedil;°&acute;&frac14;&Egrave;&para;¨&sup2;&frac12;·&yen;×&szlig;&Otilde;&acirc;&sup2;&frac12;&sup3;&not;&sup1;&yacute;&Auml;&iquest;±êx×&oslash;±ê&Aacute;&Euml;,&frac34;&Iacute;°&Ntilde;&Otilde;&acirc;&sup2;&frac12;&para;¨&Ocirc;&Uacute;&Auml;&iquest;±ê&acute;&brvbar;
if (focusX > stemp)
stemp = focusX;
stempTo = stemp / 32;
//&frac14;&Ugrave;&Egrave;&ccedil;&Otilde;&acirc;&sup2;&frac12;&frac12;&oslash;&Egrave;&euml;&sup2;&raquo;&iquest;&Eacute;&frac12;&oslash;&Egrave;&euml;&Ccedil;&oslash;,&Ouml;&ETH;&Ouml;&sup1;&Ograve;&AElig;&para;&macr;,×&cent;&Ograve;&acirc;&Euml;&sup3;&ETH;ò
if (map.tiles[agentLineNumber][stempTo].block == false) {
agentX = agentRowNumber * 32;
changeAgentPic(LEFT);
pause(time);
return;
}
agentX = stemp;
agentRowNumber = stempTo;
changeAgentPic(LEFT);
pause(time);
moveAgent();
} else if (focusX > agentX) {
stemp = agentX + step;
if (focusX < stemp)
stemp = focusX;
stempTo = stemp / 32;
if (map.tiles[agentLineNumber][stempTo].block == false) {
agentX = agentRowNumber * 32;
changeAgentPic(RIGHT);
pause(time);
return;
}
agentX = stemp;
agentRowNumber = stempTo;
changeAgentPic(RIGHT);
pause(time);
moveAgent();
} else {
if (focusY < agentY) {
stemp = agentY - step;
if (focusY > stemp)
stemp = focusY;
stempTo = stemp/32;
if (map.tiles[stempTo][agentRowNumber].block == false){
agentY = agentLineNumber*32;
changeAgentPic(UP);
pause(time);
return;
}
agentY = stemp;
agentLineNumber = stempTo;
changeAgentPic(UP);
pause(time);
moveAgent();
} else if (focusY > agentY) {
stemp = agentY + step;
if (focusY < stemp)
stemp = focusY;
stempTo = stemp/32;
if (map.tiles[stempTo][agentRowNumber].block == false){
agentY = agentLineNumber*32;
changeAgentPic(BELOW);
pause(time);
return;
}
agentY = stemp;
agentLineNumber = stempTo;
changeAgentPic(BELOW);
pause(time);
moveAgent();
} else {
return;
}
}
} private void changeAgentPic(int previousDirection) {
int firstPic = 0;
int thirdPic = 0;
if (previousDirection == LEFT) {
firstPic = 6;
} else if (previousDirection == RIGHT) {
firstPic = 9;
} else if (previousDirection == UP) {
firstPic = 3;
} else {
firstPic = 0;
}
thirdPic = firstPic + 2;
if (previousMoveDirection == previousDirection) {
agentCurrentPic++;
if (agentCurrentPic > thirdPic)
agentCurrentPic = firstPic;
} else {
agentCurrentPic = firstPic;
previousMoveDirection = previousDirection;
}
}}

Answer 3

看得头晕!!
能不能用个简单的main...来试试. 很多东西混在一起就不容易看了.(我不是说你的代码不好或有问题,只是难以看出问题,手头没有编译器...)

Answer 4

重发..
package gui;import map.*;
import java.awt.*;
import javax.swing.*;/**wo
 *  
 * alin 2003-5-22
 */
public class GamePanel extends JPanel implements Runnable {
private Map map;
private Image[] tileImage;
private Image[] agentImage;
private Image[] goodImage;
int agentX;
int agentRowNumber;
int agentY;
int agentLineNumber;
int focusX;
int focusY; private int mapWidth;
private int mapHigh; private final int UP = 1;
private final int BELOW = 2;
private final int LEFT = 3;
private final int RIGHT = 4;
private int previousMoveDirection = 0;
private int agentCurrentPic = 0; Thread runner;
Thread paintThread;
private GamePanelMouseEvent mouseEvent; public GamePanel(
Image[] tI,
Image[] aI,
Image[] gI,
Map mp,
int agentLN,
int agentRN) { mouseEvent = new GamePanelMouseEvent(this);
addMouseListener(mouseEvent); tileImage = tI;
agentImage = aI;
goodImage = gI;
map = mp;
agentLineNumber = agentLN;
agentY = agentLN * 32;
agentRowNumber = agentRN;
agentX = agentRN * 32; mapHigh = map.tiles.length;
mapWidth = map.tiles[0].length; MediaTracker track = new MediaTracker(this); for (int k = 0; k < tileImage.length; k++)
track.addImage(tileImage[k], k); for (int j = 0; j < agentImage.length; j++)
track.addImage(agentImage[j], tileImage.length + j); for (int m = 0; m < goodImage.length; m++)
track.addImage(
goodImage[m],
tileImage.length + agentImage.length + m);
try {
track.waitForAll();
} catch (InterruptedException e) {
}

if(paintThread==null){
paintThread = new Thread(this);
paintThread.start();
}
} public void paintComponent(Graphics comp) {
Graphics2D comp2D = (Graphics2D) comp; //画地皮:)...
for (int i = 0; i < mapHigh; i++) {
for (int j = 0; j < mapWidth; j++) {
comp2D.drawImage(tileImage[map.tiles[i][j].tile],
//特别注意这里j跟i的顺序!!!-_-
j * 32, i * 32, this);
}
} //画agent所在行上面的物品层(包括这行)
for (int i = 0; i <= agentLineNumber; i++) {
for (int j = 0; j < mapWidth; j++) {
if (map.tiles[i][j].good1 != -1)
comp2D.drawImage(
goodImage[map.tiles[i][j].good1],
j * 32,
i * 32,
this);
}
}
//画agent
comp2D.drawImage(
agentImage[agentCurrentPic],
agentX,
agentY - 16,
this); //画agent所在行下面的物品层
if (agentLineNumber != mapHigh - 1) {
for (int i = agentLineNumber + 1; i < mapHigh; i++) {
for (int j = 0; j < mapWidth; j++)
if (map.tiles[i][j].good1 != -1)
comp2D.drawImage(
goodImage[map.tiles[i][j].good1],
j * 32,
i * 32,
this);
}
}
//画天空层^_^
for (int i = 0; i < mapHigh; i++) {
for (int j = 0; j < mapWidth; j++) {
if (map.tiles[i][j].good2 != -1)
comp2D.drawImage(
goodImage[map.tiles[i][j].good2],
j * 32,
i * 32,
this);
}
}
} public void run() {
while(paintThread == Thread.currentThread()){
repaint();
pause(20);
}
while(runner == Thread.currentThread()) {
moveAgent();
//下面语句把人物脚放下:)
if (previousMoveDirection == LEFT && agentCurrentPic != 6) {
agentCurrentPic = 6;
} else if (
previousMoveDirection == RIGHT && agentCurrentPic != 9) {
agentCurrentPic = 9;
} else if (previousMoveDirection == UP && agentCurrentPic != 3) {
agentCurrentPic = 3;
} else if (
previousMoveDirection == BELOW && agentCurrentPic != 0) {
agentCurrentPic = 0;
}
previousMoveDirection = 0;
stopThread();
}
} public void runThread() {
if (runner == null) {
runner = new Thread(this);
runner.start();
}
} private void stopThread() {
if (runner != null) {
runner = null;
}
}
private void pause(int time) {
try {
Thread.sleep(time);
} catch (InterruptedException e) {
}
} public void moveAgent() {
//图片平移的距离
int step = 5;
//移动一次间隔时间
int time = 40;
//存放既定步伐走这一步位置
int stemp;
int stempTo; if (focusX < agentX) {
stemp = agentX - step;
//假如按既定步伐走这步超过目标x坐标了,就把这步定在目标处
if (focusX > stemp)
stemp = focusX;
stempTo = stemp / 32;
//假如这步进入不可进入区,中止移动,注意顺序
if (map.tiles[agentLineNumber][stempTo].block == false) {
agentX = agentRowNumber * 32;
changeAgentPic(LEFT);
pause(time);
return;
}
agentX = stemp;
agentRowNumber = stempTo;
changeAgentPic(LEFT);
pause(time);
moveAgent();
} else if (focusX > agentX) {
stemp = agentX + step;
if (focusX < stemp)
stemp = focusX;
stempTo = stemp / 32;
if (map.tiles[agentLineNumber][stempTo].block == false) {
agentX = agentRowNumber * 32;
changeAgentPic(RIGHT);
pause(time);
return;
}
agentX = stemp;
agentRowNumber = stempTo;
changeAgentPic(RIGHT);
pause(time);
moveAgent();
} else {
if (focusY < agentY) {
stemp = agentY - step;
if (focusY > stemp)
stemp = focusY;
stempTo = stemp/32;
if (map.tiles[stempTo][agentRowNumber].block == false){
agentY = agentLineNumber*32;
changeAgentPic(UP);
pause(time);
return;
}
agentY = stemp;
agentLineNumber = stempTo;
changeAgentPic(UP);
pause(time);
moveAgent();
} else if (focusY > agentY) {
stemp = agentY + step;
if (focusY < stemp)
stemp = focusY;
stempTo = stemp/32;
if (map.tiles[stempTo][agentRowNumber].block == false){
agentY = agentLineNumber*32;
changeAgentPic(BELOW);
pause(time);
return;
}
agentY = stemp;
agentLineNumber = stempTo;
changeAgentPic(BELOW);
pause(time);
moveAgent();
} else {
return;
}
}
} private void changeAgentPic(int previousDirection) {
int firstPic = 0;
int thirdPic = 0;
if (previousDirection == LEFT) {
firstPic = 6;
} else if (previousDirection == RIGHT) {
firstPic = 9;
} else if (previousDirection == UP) {
firstPic = 3;
} else {
firstPic = 0;
}
thirdPic = firstPic + 2;
if (previousMoveDirection == previousDirection) {
agentCurrentPic++;
if (agentCurrentPic > thirdPic)
agentCurrentPic = firstPic;
} else {
agentCurrentPic = firstPic;
previousMoveDirection = previousDirection;
}
}