向对象列表中的每个对象添加mouseListener/mouseEvent

Question

我正在尝试为对象列表中的每个对象添加一个mouselistener。我正在渲染一个帧以及多个对象，使用画布和图形g.

这是我的主要类：它渲染帧和对象。这一切都很好，这里没有问题。

import java.awt.Canvas;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.image.BufferStrategy;
public class Proj2 extends Canvas implements Runnable{
    private final int[][] Init_board = 
          {{1,0,1,0,1,0,1,0},
           {0,1,0,1,0,1,0,1},
           {1,0,1,0,1,0,1,0},
           {0,1,0,1,0,1,0,1},
           {1,0,1,0,1,0,1,0},
           {0,1,0,1,0,1,0,1},
           {1,0,1,0,1,0,1,0},
           {0,1,0,1,0,1,0,1}};
    private final int[][] new_Game = 
          {{5,5,5,5,5,5,5,5},
          {5,5,5,5,5,5,5,5},
          {0,0,0,0,0,0,0,0},
          {0,0,0,0,0,0,0,0},
          {0,0,0,0,0,0,0,0},
          {0,0,0,0,0,0,0,0},
          {4,4,4,4,4,4,4,4},
          {4,4,4,4,4,4,4,4}};
    public static final int WIDTH = 640;
    public static final int HEIGHT = 640;
    private final int initPieces = 8;
   private Thread thread;
  private boolean running = false;
    private Board board;
    private GameHandler handler;    
    public Proj2(){
        handler = new GameHandler();
        new Window(WIDTH,HEIGHT,"Checkers",this);
        board = new Board(WIDTH,HEIGHT,Init_board);
         for(int i = 0; i < 8; i++){
            for(int j = 0; j < 8; j++){
              handler.newObject(new Player(j * (640 / initPieces),i * (640 /
              initPieces),initPieces,ID.playerOne,new_Game[i][j],handler));
             }
         }

这就是我不确定我做得是否正确的地方。我已经创建了上面的对象，并将它们渲染到框架中。然后，我尝试为每个对象添加一个mouslister，这样它们就可以各自拥有自己的MouseEvent。这仍然在我的主课上。

for(int i = 0; i < handler.gameObjects.size(); i++){
    GameObjects temp = handler.gameObjects.get(i);
    this.addMouseListener(new MouseInput(temp));
   }
}

其余部分渲染帧并开始游戏循环。

这是我的处理程序类。此类创建对象列表，并在需要时添加和删除对象。

import java.awt.Graphics;
import java.util.LinkedList;
public class GameHandler {
    LinkedList<GameObjects> gameObjects = new LinkedList<GameObjects>();
    public void tick(){
        for(int i = 0; i < gameObjects.size(); i++){
            GameObjects temp = gameObjects.get(i);
            temp.tick();
        }
    }
    public void render(Graphics g){
        for(int i = 0; i < gameObjects.size(); i++){
            GameObjects temp = gameObjects.get(i);
            temp.render(g);
        }
    }
    public void newObject(GameObjects object){
        this.gameObjects.add(object);
    }
    public void deleteObject(GameObjects object){
        this.gameObjects.remove(object);
    }
}

这是MouseInput类：其中每个对象都被发送到并具有一个MouseEvent。我想要的是，每个对象都应该有一个不同的MouseEvent ID，所以当点击它时，它会为每个对象返回一个唯一的ID。然而，此时它为所有对象返回相同的值。我希望能够选择和对象，点击它，然后点击一个新的位置，对象应该移动到那里。

    import java.awt.event.MouseEvent;
    import java.awt.event.MouseListener;
    import java.util.LinkedList;

    public class MouseInput implements MouseListener {
            private GameHandler handler;
            private GameObjects object;
            public MouseInput(GameObjects Object){
            this.object = Object;

            }

            @Override
            public void mouseClicked(MouseEvent arg0) {
            }
            @Override
            public void mouseEntered(MouseEvent e) {
            }
            @Override
            public void mouseExited(MouseEvent arg0) {
            }
            @Override
            public void mousePressed(MouseEvent e) {

                int x = e.getX();
                int y = e.getY();
                int b = e.getClickCount();
                int c = e.getID();
                /*NOT SURE WHAT TO DO HERE*/

                /*THIS JUST MOVES THE OBJECT WHERE I CLICK, BUT WHEN I HAVE MULTIPLE OBJECTS AND I CLICK, ONLY ONE OBJECT MOVES AND THE REST DISAPEAR*/
                    if(b == 2){
                        if(object.getID() == ID.playerOne ){
                            object.setX(x);
                            object.setY(y);
                        }
                    }

            }


            @Override
            public void mouseReleased(MouseEvent arg0) {
                // TODO Auto-generated method stub
            }
        }

对所有代码表示歉意。我尽量少发帖。

Answer 1

我试着给每个对象添加一个mouslister，这样它们就可以各自拥有自己的MouseEvent。

for(int i = 0; i < handler.gameObjects.size(); i++)
{
    GameObjects temp = handler.gameObjects.get(i);
    this.addMouseListener(new MouseInput(temp));
}

该代码将MouseListener添加到同一个对象，而不是不同的对象。相反，我想代码应该是：

//this.addMouseListener(new MouseInput(temp));
temp.addMouseListener(new MouseInput(temp));

因此当点击它时，它为每个对象返回一个唯一的ID。

如果你想知道哪个对象被点击了，你可以从鼠标事件中获得信息：

GameObjects temp = (GameObjects)e.getSource();