3Danke
ERLEDIGT
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NEIN
ANTWORTEN
9
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ZUGRIFFE
336
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EMPFEHLEN
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Schönen Abend Leute,
ich hab gestern mal angefangen eine kleines Pong Game zu schreiben (in vorbereitung auf ein größeres Projekt, d.h. wollte erstmal verstehen wie ein Spiel grundsätzliche funktioniert).
Nun habe schön meine Kollisionsabfrage gebastelt und es geht soweit auch alles. Als ich dann die AI (= Inner Class implemts Runnable) implementiert habe und diese Ihren Schläger bewegt kollidiert meine Ball nicht mehr mit dem Schläger der AI (= Objekt PlayerTwo). Nun weis ich nicht genau, ob es daran liegt, dass die Animation des Balles als auch die AI selbst beides prallel laufende Threads sind, oder ob es mit was anderem zu tun hat.
Hier ist mal der Source, ich hoffe ihr könnt meine Fehler finden(, falls es den den gibt)
Code java:1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328
package pongfengine; /* Simple Pong Game * Author: Kai Dölger * Date: 28.12.2009 * Version: 0.1 */ import java.awt.*; import java.awt.event.*; import java.awt.color.*; public class F2D extends Frame implements KeyListener, WindowListener { //Main Variables int x = 0; int y = 0; int height = 500; int width = 800; BatEntity playerOne; BatEntity playerTwo; BallEntity ball; int direction; Image dbImage; Graphics dbg; Thread movingBall; Thread ai; public static void main(String[] args) { F2D Engine = new F2D (); Engine.initGame(); } public void initGame () { this.setBounds(x, y, width, height); this.setTitle("Pong - FEngine"); playerOne = new BatEntity (); playerTwo = new BatEntity (); ball = new BallEntity(); initPlayerOne (); initPlayerTwo (); initBall (); this.addKeyListener(this); direction = 5; System.out.println(direction); movingBall = new Thread (new movingBall ()); movingBall.start(); ai = new Thread (new AI()); ai.start(); this.addWindowListener(this); this.setVisible(true); } @Override public void paint (Graphics g) { g.drawRect(playerOne.getLeft(), playerOne.getTop(), playerOne.getWidth(), playerOne.getHeight()); g.drawRect(playerTwo.getLeft(), playerTwo.getTop(), playerTwo.getWidth(), playerTwo.getHeight()); g.drawOval(ball.getLeft(), ball.getTop(), ball.getWidth(), ball.getHeight()); } public void initPlayerOne () { playerOne.setLeft(10); playerOne.setTop(225); playerOne.setWidth(10); playerOne.setHeight(50); } public void initPlayerTwo () { playerTwo.setLeft(780); playerTwo.setTop(225); playerTwo.setWidth(10); playerTwo.setHeight(50); } public void initBall () { ball.setHeight(20); ball.setWidth(20); ball.setLeft(390); ball.setTop(230); } public void keyTyped(KeyEvent e) { } public void keyPressed(KeyEvent e) { int keyCode = e.getKeyCode(); int tempMove=playerOne.getTop(); switch(keyCode) { case java.awt.event.KeyEvent.VK_UP: tempMove-=15; break; case java.awt.event.KeyEvent.VK_DOWN: tempMove+=15; break; } if (tempMove >= 445 || tempMove <= 25) { if (tempMove > 445) { tempMove = 445; } if (tempMove < 25) { tempMove = 25; } } playerOne.setTop(tempMove); this.repaint(); } public void keyReleased(KeyEvent e) { } public void windowOpened(WindowEvent e) { } public void windowClosing(WindowEvent e) { System.exit(0); } public void windowClosed(WindowEvent e) { } public void windowIconified(WindowEvent e) { } public void windowDeiconified(WindowEvent e) { } public void windowActivated(WindowEvent e) { } public void windowDeactivated(WindowEvent e) { } public class movingBall implements Runnable { int distance=10; int counter =0; int speed=100; public void run () { //=====DIRECTIONS===== //1 north //2 south //3 east //4 west //5 north east //6 north west //7 south east //8 south west int dist1=10; int dist2=5; //continue till the program ends while(true) { //just a temporary variable for storing intermediate ball position int tempTop=0; int tempLeft=0; //check and see which direction the ball is going //if direction is set to go up i.e. 2 then subtract distance //if direction is set to go down then add distance switch(direction) { case 1: //north tempTop=ball.getTop()-dist1; break; case 2 : //south tempTop=ball.getTop()+dist1; break; case 3: //east tempTop=ball.getLeft()+dist2; break; case 4: //west tempTop=ball.getLeft()-dist2; break; case 5: //north east tempTop=ball.getTop()-dist1; tempLeft=ball.getLeft()+dist2; break; case 6: //north west tempTop=ball.getTop()-dist1; tempLeft=ball.getLeft()-dist2; break; case 7: //south east tempTop=ball.getTop()+dist1; tempLeft=ball.getLeft()+dist2; break; case 8: //south west tempTop=ball.getTop()+dist1; tempLeft=ball.getLeft()-dist2; break; } //update the balls position in the datastructure ball.setTop(tempTop); ball.setLeft(tempLeft); //=====TOP COLLISIONS===== if(ball.getTop()<=20 && direction==5) //coming north east now go south east direction=7; if(ball.getTop()<=20 && direction==6) //coming north west now go south west direction=8; //=====BOTTOM COLLISIONS===== if(ball.getTop()>=480 && direction==7) //coming south east now go north east direction=5; if(ball.getTop()>=480 && direction==8) //coming north east now go south east direction=6; //====LEFT COLLISIONS===== if(ball.getLeft() <=0 && direction == 6) //coming north west going north east direction=5; if(ball.getLeft() <=0 && direction == 8) //coming south west going south east direction=7; //=====RIGHT COLLISIONS===== if(ball.getLeft() >=780 && direction == 5) //coming north east going north west direction=6; if(ball.getLeft() >=780 && direction == 7) //coming south east going south west direction=8; //=====BAT (LEFT) COLLISIONS===== if ((ball.getLeft() <= playerOne.getLeft()+20 && playerOne.getTop()<=ball.getTop() && ball.getTop()>=playerOne.getTop()+50) && direction == 8) {//coming south west going south east direction=7; counter++; } if ((ball.getLeft() <= playerOne.getLeft()+20 && playerOne.getTop()<=ball.getTop() && ball.getTop()>=playerOne.getTop()+50) && direction == 6) {//coming north west going north east direction=5; counter++; } //=====BAT (RIGHT) COLLISIONS===== if ((ball.getLeft() >= playerTwo.getLeft()-10 && playerTwo.getTop()<=ball.getTop() && ball.getTop()>=playerTwo.getTop()+50) && direction == 5) {//coming south east going south west direction=6; counter++; } if ((ball.getLeft() >= playerTwo.getLeft()-10 && playerTwo.getTop()<=ball.getTop() && ball.getTop()>=playerTwo.getTop()+50) && direction == 7) {//coming south east going south west direction=5; counter++; } //redraw the ball at new locations repaint(); //Increases Speed of the Game when the Ball hits a Bat if (counter <= 90) { speed = speed - counter; //System.out.println (speed); } //putting the thread to sleep so we can create some delay //so the ball's motion looks natural. try { Thread.sleep(speed); } catch(Exception e) { System.out.println("Error in running thread " + e); } } } } public class AI implements Runnable { int tempTop; public void run () { while (true) { if (direction == 5 || direction == 7) if (ball.getTop()+10 < playerTwo.getTop()+25) { tempTop = playerTwo.getTop(); tempTop-= 15; playerTwo.setTop(tempTop); } if (ball.getTop()+10 > playerTwo.getTop()+25) { tempTop = playerTwo.getTop(); tempTop+= 15; playerTwo.setTop(tempTop); } repaint(); try { Thread.sleep(100); } catch (Exception e) { System.out.println("Error in running Thread " + e); } } } } }
Grüße Kai
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Hmm deine Zugriffe auf die Methoden die von den Threads verwendet werden, sollten synchronized sein, damit immer der aktuelle Wert gelesen werden kann.
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Heißt, ich soll die beiden Run() als synchronized setzen? Oder verstehe ich dich da falsch?
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Alle Setter und Getter in Ball und wahrscheinlich auch in Bat
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Hab ich jetzt gemacht, aber nach dem ich den Bat vom AI mal per hand gesteuert und trotzdem gab es keine Kollision, also hab ich mal den Debugger bemüht und festgestellt, dass er überhaupt nicht in den entsprechenden if-Block kommt. Komisch, allerdings weis ich nicht, was an den Bedingungen falsch sein soll.
Hoffe ihr findets, werde jetzt erstmal an anderer Stellen an dem Game weiterschreiben.
Grüße Kai
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Kein Wunder dass das ganze nicht funktioniert hat. Benutze niemals irgendwelche ints um dir einen Status zu merken. Das mit den directions konnte so ja nur schief gehen. Bei dem Ball um dem Player ist es auch sinnvoll noch getRight und getBottom Methoden hinzuzufügen. Deine Berechnungen sollten auch nicht mit festen Zahlen arbeiten, da du sonst nie die Größe von Player und Ball ändern kannst ohne alles umzuschreiben. So ist es einigermaßen lesbar und funktioniert. Noch nicht super aber du sollst ja auch noch was zu tun haben

Code java:1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306
package de; import java.awt.Frame; import java.awt.Graphics; import java.awt.Image; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.awt.event.WindowEvent; import java.awt.event.WindowListener; import java.util.concurrent.TimeUnit; public class F2D extends Frame implements KeyListener, WindowListener { private static final int PLAYER_STEP = 15; // Main Variables int x = 0; int y = 0; int height = 500; int width = 800; BatEntity playerOne; BatEntity playerTwo; BallEntity ball; Direction direction; Image dbImage; Graphics dbg; Thread movingBall; Thread ai; public static void main(String[] args) { F2D Engine = new F2D( ); Engine.initGame( ); } public void initGame() { this.setBounds(x, y, width, height); this.setTitle("Pong - FEngine"); playerOne = new BatEntity( ); playerTwo = new BatEntity( ); ball = new BallEntity( ); initPlayerOne( ); initPlayerTwo( ); initBall( ); this.addKeyListener(this); direction = Direction.NORTH_EAST; System.out.println(direction); movingBall = new Thread(new MovingBall( )); movingBall.start( ); ai = new Thread(new AI( )); ai.start( ); this.addWindowListener(this); this.setVisible(true); } @Override public void paint(Graphics g) { g.drawRect(playerOne.getLeft( ), playerOne.getTop( ), playerOne .getWidth( ), playerOne.getHeight( )); g.drawRect(playerTwo.getLeft( ), playerTwo.getTop( ), playerTwo .getWidth( ), playerTwo.getHeight( )); g.drawOval(ball.getLeft( ), ball.getTop( ), ball.getWidth( ), ball .getHeight( )); } public void initPlayerOne() { playerOne.setLeft(10); playerOne.setTop(225); playerOne.setWidth(10); playerOne.setHeight(50); } public void initPlayerTwo() { playerTwo.setLeft(780); playerTwo.setTop(225); playerTwo.setWidth(10); playerTwo.setHeight(50); } public void initBall() { ball.setHeight(20); ball.setWidth(20); ball.setLeft(390); ball.setTop(230); } public void keyTyped(KeyEvent e) { } public void keyPressed(KeyEvent e) { int keyCode = e.getKeyCode( ); int tempMove = playerOne.getTop( ); switch (keyCode) { case java.awt.event.KeyEvent.VK_UP: tempMove -= PLAYER_STEP; break; case java.awt.event.KeyEvent.VK_DOWN: tempMove += PLAYER_STEP; break; } int minMove = 0; int maxMove = height - playerOne.getHeight( ); if (tempMove >= maxMove || tempMove <= minMove) { if (tempMove > maxMove) { tempMove = maxMove; } if (tempMove < minMove) { tempMove = minMove; } } playerOne.setTop(tempMove); this.repaint( ); } public void keyReleased(KeyEvent e) { } public void windowOpened(WindowEvent e) { } public void windowClosing(WindowEvent e) { System.exit(0); } public void windowClosed(WindowEvent e) { } public void windowIconified(WindowEvent e) { } public void windowDeiconified(WindowEvent e) { } public void windowActivated(WindowEvent e) { } public void windowDeactivated(WindowEvent e) { } public class MovingBall implements Runnable { private static final int COUNTER_THRESHOLD = 90; private static final int INITIAL_SPEED = 100; int distance = 10; int counter = 0; int speed = INITIAL_SPEED; public void run() { int dist1 = 10; int dist2 = 5; // continue till the program ends while (true) { int tempCounter = counter; // just a temporary variable for storing intermediate // ball position int tempTop = 0; int tempLeft = 0; // check and see which direction the ball is going // if direction is set to go up i.e. 2 then subtract // distance // if direction is set to go down then add distance if(direction.isNorth( )){ tempTop = ball.getTop( ) - dist1; } if(direction.isSouth( )){ tempTop = ball.getTop( ) + dist1; } if(direction.isWest( )){ tempLeft = ball.getLeft( ) - dist2; } if(direction.isEast( )){ tempLeft = ball.getLeft( ) + dist2; } // update the balls position in the datastructure ball.setTop(tempTop); ball.setLeft(tempLeft); int ballLeftCollision = x; int ballRightCollision = width - ball.getWidth( ); int ballTopCollision = y + ball.getHeight( ); int ballBottomCollision = height; // =====TOP COLLISIONS===== if (direction.isNorth( ) && ball.getTop( ) <= ballTopCollision) { direction = direction.toggleNorthSouth( ); } // =====BOTTOM COLLISIONS===== if (direction.isSouth( ) && ball.getBottom( ) >= ballBottomCollision) { // coming south east now go north east direction = direction.toggleNorthSouth( ); } // ====LEFT COLLISIONS===== if (direction.isWest( ) && ball.getLeft( ) <= ballLeftCollision) { // coming north west going north east direction = direction.toggle( ); } // =====RIGHT COLLISIONS===== if (direction.isEast( ) && ball.getRight( ) >= ballRightCollision) { // coming north east going north west direction = direction.toggle( ); } // =====BAT (LEFT) COLLISIONS===== if (direction.isWest( ) && ball.getLeft( ) <= playerOne.getRight( ) && ball.getTop( ) >= playerOne.getTop( ) && ball.getTop( ) <= playerOne.getBottom( )) { direction = direction.toggle( ); tempCounter++; } // =====BAT (RIGHT) COLLISIONS===== if (direction.isEast( ) && ball.getRight( ) >= playerTwo.getLeft( ) && ball.getTop( ) >= playerTwo.getTop( ) && ball.getTop( ) <= playerTwo.getBottom( )) { // coming // south // east // going // south west direction = direction.toggle( ); tempCounter++; } // redraw the ball at new locations repaint( ); // Increases Speed of the Game when the Ball hits a // Bat if (tempCounter != counter && tempCounter <= COUNTER_THRESHOLD) { speed = INITIAL_SPEED - tempCounter; // System.out.println (speed); } if (speed < 0) { speed = 0; } counter = tempCounter; // putting the thread to sleep so we can create some // delay // so the ball's motion looks natural. try { TimeUnit.MILLISECONDS.sleep(speed); } catch (Exception e) { System.out.println("Error in running thread " + e); } } } } public class AI implements Runnable { int tempTop; public void run() { while (true) { int ballTop = ball.getHeight( ) / 2; int playerTop = playerTwo.getHeight( ) / 2; if (direction == Direction.NORTH_EAST || direction == Direction.SOUTH_EAST) { if (ball.getTop( ) + ballTop < playerTwo.getTop( ) + playerTop) { tempTop = playerTwo.getTop( ) - PLAYER_STEP; } } if (ball.getTop( ) + ballTop > playerTwo.getTop( ) + playerTop) { tempTop = playerTwo.getTop( ) + PLAYER_STEP; } int minMove = 0; int maxMove = height - playerTwo.getHeight( ); if (tempTop >= maxMove || tempTop <= minMove) { if (tempTop > maxMove) { tempTop = maxMove; } if (tempTop < minMove) { tempTop = minMove; } } playerTwo.setTop(tempTop); repaint( ); try { TimeUnit.MILLISECONDS.sleep(100); } catch (Exception e) { System.out.println("Error in running Thread " + e); } } } } }
Code java:1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
package de; public enum Direction { NORTH, SOUTH, EAST, WEST, NORTH_EAST, NORTH_WEST, SOUTH_EAST, SOUTH_WEST; public boolean isNorth() { return this == NORTH || this == NORTH_EAST || this == NORTH_WEST; } public boolean isSouth() { return this == SOUTH || this == SOUTH_EAST || this == SOUTH_WEST; } public boolean isWest() { return this == WEST || this == SOUTH_WEST || this == NORTH_WEST; } public boolean isEast() { return this == EAST || this == SOUTH_EAST || this == NORTH_EAST; } public Direction toggleNorthSouth() { if (isNorth( )) { if (this == NORTH_EAST) { return SOUTH_EAST; } else { return SOUTH_WEST; } } else { if (this == SOUTH_EAST) { return NORTH_EAST; } else { return NORTH_WEST; } } } public Direction toggleEastWest() { if (isWest( )) { if (this == NORTH_WEST) { return NORTH_EAST; } else { return SOUTH_EAST; } } else { if (this == NORTH_EAST) { return NORTH_WEST; } else { return SOUTH_WEST; } } } public Direction toggle() { return this.toggleNorthSouth( ).toggleEastWest( ); } }
Code java:1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77
package de; public class Entity { private int left; private int top; private int width; private int height; /** * @return the left */ public synchronized int getLeft() { return left; } /** * @param left * the left to set */ public synchronized void setLeft(int left) { this.left = left; } /** * @return the top */ public synchronized int getTop() { return top; } /** * @param top * the top to set */ public synchronized void setTop(int top) { this.top = top; } /** * @return the width */ public synchronized int getWidth() { return width; } /** * @param width * the width to set */ public synchronized void setWidth(int width) { this.width = width; } /** * @return the height */ public synchronized int getHeight() { return height; } /** * @param height * the height to set */ public synchronized void setHeight(int height) { this.height = height; } public synchronized int getRight() { return this.left + this.width; } public synchronized int getBottom() { return this.top + this.height; } }
Code java:1 2 3 4 5
package de; public class BallEntity extends Entity { }
Code java:1 2 3 4 5
package de; public class BatEntity extends Entity { }
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Dann bedanke ich mich mal recht herzlich und werde das ganze später mal umsetzten

Grüße Kai
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Sorry, aber irgendwie verstehe ich die Klasse Direction noch nicht so ganz. Könntest du da vielleicht noch ein, zwei Worte drüber los werden?
Schönen Nachmittag noch, Kai
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Das ist keine Klasse sondern ein enum. Ein enum ist eine Aufzählung, in diesem Fall von Richtungen. Zusätzlich hab ich noch Methoden implementiert, um rauszufinden um welche der 4 Hauptrichtungen es sich handelt.
Siehe dazu auch:
http://openbook.galileocomputing.de/...06a93952704d84
http://openbook.galileocomputing.de/...4a5ed5df9a32d4
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Okay, danke ich hab den Fehler gefunden, der mich verzeifeln ließ und zwar habe ich bei RIGHT,LEFT,BAT(LEFT),BAT(RIGHT) den Methodenaufruf direction.toogle() mit directio.toogleEastWest() eresetzt, denn vorher ist der Ball in die Richtung abgeprallt, aus der er kam, weil mit direction.toogle() erst toogleNorthSouth() aufgerufen wurde und er dann in die Schleife
Code java:1 2 3 4 5 6 7 8
if (this == SOUTH_EAST) { return NORTH_EAST; } else { return NORTH_WEST; }
reinlief und wieder nach oben abprallte.
Ich hoffe du verstehst was ich meine
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