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final char cmdMoveForward = KeyEvent.VK_W; final char cmdMoveBackwards = KeyEvent.VK_S; final char cmdMoveRight = KeyEvent.VK_D; final char cmdMoveLeft = KeyEvent.VK_A; boolean pressedCmdMoveForward = false; boolean pressedCmdMoveBackwards = false; boolean pressedCmdMoveRight = false; boolean pressedCmdMoveLeft = false; //[...] public void keyPressed(KeyEvent event){ int key = event.getKeyCode(); switch((char)key){ case cmdMoveForward: if( playerPosY > 5) playerPosY -= 5; pressedCmdMoveForward = true; break; case cmdMoveBackwards: if( playerPosY < 395) playerPosY += 5; pressedCmdMoveBackwards = true; break; case cmdMoveLeft: if( playerPosX > 5) playerPosX -= 5; pressedCmdMoveLeft = true; break; case cmdMoveRight: if( playerPosX < 395) playerPosX += 5; pressedCmdMoveRight = true; break; } switch((char)key){ case cmdMoveForward: if( playerPosY > 5 && !pressedCmdMoveForward) playerPosY -= 5; break; case cmdMoveBackwards: if( playerPosY < 395 && !pressedCmdMoveBackwards) playerPosY += 5; break; case cmdMoveLeft: if( playerPosX > 5 && !pressedCmdMoveLeft) playerPosX -= 5; break; case cmdMoveRight: if( playerPosX < 395 && !pressedCmdMoveRight) playerPosX += 5; break; } pressedCmdMoveForward = false; pressedCmdMoveBackwards = false; pressedCmdMoveLeft = false; pressedCmdMoveRight = false; repaint(); } |
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public void keyPressed(KeyEvent event){ int key = event.getKeyCode(); if( key == cmdMoveForward){ playerMoveForward(); } if( key == cmdMoveBackwards){ playerMoveBackwards(); } if( key == cmdMoveLeft){ playerMoveLeft(); } if( key == cmdMoveRight){ playerMoveRight(); } repaint(); } |
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public class gsg9 extends Applet implements ActionListener,KeyListener{ Player player = new Player(playerName,startPosX,startPosY); public void init(){ /* layout */ this.setLayout(null); this.setSize(width,height); this.addKeyListener(this); } public void paint(Graphics g){ /* constant */ g.drawImage(imgBackground,mapPosX,mapPosY,this); /* dynamic */ g.drawImage(imgPlayer,player.getPosX(),player.getPosY(),this); } public void actionPerformed(ActionEvent evt){ } public void keyPressed(KeyEvent event){ int key = event.getKeyCode(); if( key == cmdMoveForward) pressedCmdMoveForward = true; if( key == cmdMoveBackwards) pressedCmdMoveBackwards = true; if( key == cmdMoveLeft) pressedCmdMoveLeft = true; if( key == cmdMoveRight) pressedCmdMoveRight = true; movePlayer(); } public void keyReleased(KeyEvent event){ int key = event.getKeyCode(); if( key == cmdMoveForward) pressedCmdMoveForward = false; if( key == cmdMoveBackwards) pressedCmdMoveBackwards = false; if( key == cmdMoveLeft) pressedCmdMoveLeft = false; if( key == cmdMoveRight) pressedCmdMoveRight = false; movePlayer(); } public void keyTyped(KeyEvent event){ } public void movePlayer(){ int posX = player.getPosX(); int posY = player.getPosY(); if( pressedCmdMoveForward ){ if( posY > 0 ) player.setPosY(posY-2); } if( pressedCmdMoveBackwards ){ if( posY < 400 ) player.setPosY(posY+2); } if( pressedCmdMoveLeft ){ if( posX > 0 ) player.setPosX(posX-2); } if( pressedCmdMoveRight ){ if( posX < 400 ) player.setPosX(posX+2); } repaint(); } } |
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