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我正在写一个推箱子游戏，我在移动玩家时遇到了麻烦。我可以移动玩家一个位置，但随后他被卡住了，但我也可以在其他方向上画一个新玩家，但不能移动
在我按下任何按钮Before之前
在我按下所有4个方向之后。After
我的按键代码如下：

@Override
public void keyPressed(KeyEvent e) {

    if(e.getKeyChar() == 'w' || e.getKeyCode() == KeyEvent.VK_UP) {
        tmpMap.movePlayer(1);
        lbl_output.setText("you pressed up");
    } else if(e.getKeyChar() == 's' || e.getKeyCode() == KeyEvent.VK_DOWN) {
        tmpMap.movePlayer(2);
        lbl_output.setText("you pressed down");
    } else if(e.getKeyChar() == 'd' || e.getKeyCode() == KeyEvent.VK_RIGHT) {
        tmpMap.movePlayer(3);
        lbl_output.setText("you pressed right");
    } else if(e.getKeyChar() == 'a' || e.getKeyCode() == KeyEvent.VK_LEFT) {
        tmpMap.movePlayer(4);
        lbl_output.setText("you pressed left");
    } else {
        lbl_output.setText("please use w,a,s,d or arrow keys to navigate ");
    }
    drawMap();
        
}

我的movePlayer方法是这样的。

public void movePlayer(int dir) {

    int player_row = playerLocation.getX();
    int player_col = playerLocation.getY();
    if (dir == 1) {
        myMap[player_row][player_col] = new Floor();
        myMap[--player_row][player_col] = new Player();
    } else if (dir == 2) {
        myMap[player_row][player_col] = new Floor();
        myMap[++player_row][player_col] = new Player();
    } else if (dir == 3) {
        myMap[player_row][player_col] = new Floor();
        myMap[player_row][++player_col] = new Player();
    } else if (dir == 4) {
        myMap[player_row][player_col] = new Floor();
        myMap[player_row][--player_col] = new Player();
    }

}