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# a problem with the mouse in a video game

 P: 12 I'm writing a RPG with 2-D graphics in java and for right now i have it where you can move the character using the arrows keys and the mouse and a few other things, when i click the mouse somewhere my character goes there but while the character is going there and i click somewhere else the character still goes to where i first clicked then once the character is there, then it goes to the second location that i clicked, instead i want the character to go to the second location once i click there and ignore the first one, what could be the problem here?, here is some of my code. note that the gui class is mostly here the other part of the class is code for displaying the buttons which is quite large in length position class package Game; import java.math.*; import java.awt.event.*; public class Position { public int x = 0; public int y = 0; static MouseEvent e; public Position() {} public Position(int xCoord, int yCoord) { x = xCoord; y = yCoord; } public int getXpos() { return x; } public int getYpos() { return y; } public static void gotohere(Position p1, Position p2) { while (getDistance(p1, p2) > 0.0) { if (p2.x > p1.x) {p1.x = p1.x + 1;} if (p1.x > p2.x) {p1.x = p1.x - 1;} if (p2.y > p1.y) {p1.y = p1.y + 1;} if (p1.y > p2.y) {p1.y = p1.y - 1;} try { Thread.sleep(20); } catch (InterruptedException e) { e.printStackTrace(); } } } public void setPosition(int xCoord, int yCoord) { x = xCoord; y = yCoord; } public void move(int xDistance, int yDistance) { x = x + xDistance; y = y + yDistance; } public static double getDistance(Position p1, Position p2) { return Math.sqrt(Math.pow(p1.x - p2.x, 2) + Math.pow(p1.y - p2.y , 2)); } } //////////////////////////////////////////////////// main gui class import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.awt.Graphics; import java.awt.Image; import java.awt.Toolkit; import javax.swing.event.MouseInputAdapter; public class Game_GUI implements ActionListener, KeyListener, MouseListener { Map gameMap = new Map(); Position playerPos = new Position(0,0); Position cpuPos = new Position(245, 185); Integer xCoord = 0; Integer yCoord = 0; int progress = 0; Dimension canvasSize = new Dimension(); public void actionPerformed(ActionEvent evt) { //textField.setText("Press 'h' any time to see help screen"); healthBar.setValue(0); // canvas1.setBackground(Color.LIGHT_GRAY); draw(canvas1.getGraphics()); draw2(canvas1.getGraphics()); // if(evt.getSource() == jButton1) { prompt.dispose(); nameField.setText(this.jTextField1.getText()); draw(canvas1.getGraphics()); draw2(canvas1.getGraphics()); gameFrame.setVisible(true); } if(textField.getLineCount() > 4) { textField.setText(""); } } public void keyTyped(KeyEvent e) { } public void keyPressed(KeyEvent e) { manaField.setText(Integer.toString(e.getKeyCode()) ); gameFrame.validate(); switch(e.getKeyCode()) { case 38: if(playerPos.getYpos() > 0) playerPos.setPosition(playerPos.getXpos(),playerPo s.getYpos() - 5); break; case 40: if(playerPos.getYpos() < canvasSize.height -25) playerPos.setPosition(playerPos.getXpos(),playerPo s.getYpos() + 5); break; case 37: if(playerPos.getXpos() > 0) playerPos.setPosition(playerPos.getXpos() - 5,playerPos.getYpos()); break; case 39: if(playerPos.getXpos() < canvasSize.width - 25) playerPos.setPosition(playerPos.getXpos() + 5,playerPos.getYpos()); break; case 49: Thread myThread = new Thread(healChar); myThread.start(); break; case 50: RandomNumbers generator = new RandomNumbers(10); textField.setText(textField.getText() + Integer.toString(generator.getRandomNumber())); break; case 54: helpScreen help = new helpScreen(); gameFrame.validate(); break; default: break; }; gameFrame.validate(); draw(canvas1.getGraphics()); draw2(canvas1.getGraphics()); drawPotion(healthBTN2.getGraphics()); } public void keyReleased(KeyEvent e) {} public void mouseEntered (MouseEvent e) {} public void mousePressed (MouseEvent e) {} public void mouseReleased (MouseEvent e) {} public void mouseExited (MouseEvent e) {} public void mouseClicked(MouseEvent e) { if (e.getX() > 10 && e.getX() < canvasSize.width - 12 && e.getY() > 10 && e.getY() < canvasSize.height - 12) { Position there = new Position((e.getX() - 10), (e.getY() - 10)); Position.gotohere(playerPos, there); } else if (e.getX() < 11 && e.getX() > -1 && e.getY() < 11 && e.getY() > -1) { Position there = new Position(e.getX(), e.getY()); Position.gotohere(playerPos, there); } else if (e.getY() < 11 && e.getY() > -1) { Position there = new Position((e.getX() - 10), e.getY()); Position.gotohere(playerPos, there); } else if (e.getX() < 11 && e.getX() > -1) { Position there = new Position(e.getX(), (e.getY() - 10)); Position.gotohere(playerPos, there); } } public void draw(Graphics g) { gameMap.getCurMap(g, canvasSize.width, canvasSize.height, canvas1, playerPos); g.drawImage(Toolkit.getDefaultToolkit().getImage(" C:/game_maps/character.GIF"),playerPos.getXpos(), playerPos.getYpos(), 23, 23, canvas1); } public void draw2(Graphics g2) { g2.drawImage(Toolkit.getDefaultToolkit().getImage( "C:/game_maps/character2.GIF"),cpuPos.getXpos(), cpuPos.getYpos(), 23, 23, canvas1); } } Jun 5 '07 #1