java - 为什么这个方法不执行这段代码中的其他方法？

Question

我在多个场景中多次运行代码并得到了相同的结果。它应该做的是向右移动，当它到达它应该转弯的点时，它就会转弯。相反，它会向我显示错误对话框，我指示它在遇到无法识别的内容时显示该错误对话框。它似乎跳过了告诉它执行单独方法的代码部分。我还有其他三种类似的方法，它们在不同的方向上做同样的事情。

详细说明情况如何。我开始游戏，它会加载玩家所在的关卡。我使用某种形式的输入来执行下面的代码。角色向右移动，但随后拒绝移动，即使关卡规定应该移动。

编辑:我修改了代码以使用 .equals() 而不是 ==。我发现问题实际上是由于我忘记了java如何处理x和y轴而出现的。我感谢那些修复了我的编码缺陷的人，这确实很有帮助。

public static void moveRight(){
    move = true;
    while(move == true){
        Point character = load.getCharacter();
        Point space = character;
        space.x += 20;
        String name = load.getSpace(space);
        System.out.println(name);
        if(name.equals("empty")){
            load.setCharacter(space);
        }else if(name.equals("fTurnUp")){
            load.setCharacter(space);
            move = false;
            moveUp();
        }else if(name.equals("fTurnDown")){
            load.setCharacter(space);
            move = false;
            moveDown();
        }else if(name.equals("fTurnLeft")){
            load.setCharacter(space);
            move = false;
            moveLeft();
        }else if(name.equals("fTurnRight")){
            load.setCharacter(space);
            move = false;
            moveRight();
        }else if(name.equals("turn")){
            load.setCharacter(space);
            move = false;
        }else if(name.equals("finish")){
            load.setCharacter(space);
            move = false;
            Component frame = null;
            JOptionPane.showMessageDialog(frame,
                    "Congratulations! You have completed the level.",
                    "Level Completed",
                    JOptionPane.PLAIN_MESSAGE);
        }else if(name.equals("wall")){
            move = false;
            Component frame = null;
            JOptionPane.showMessageDialog(frame,
                    "The level was not designed correctly. Click 'Ok' to return to main menu",
                    "Invalid Level",
                    JOptionPane.ERROR_MESSAGE);
        }
    }
}

Answer 1

尝试将比较器从 == 更改为 .equals()。前者指向字符串的引用，而后者实际上比较值。

鉴于此，应该是:

if(name.equals("empty")){
        load.setCharacter(space);
    }else if(name.equals("fTurnUp")){
        load.setCharacter(space);
        move = false;
        moveUp();
    }else if(name.equals("fTurnDown")){
        load.setCharacter(space);
        move = false;
        moveDown();
    }else if(name.equals("fTurnLeft")){
        load.setCharacter(space);
        move = false;
        moveLeft();
    }else if(name.equals("fTurnRight")){
        load.setCharacter(space);
        move = false;
        moveRight();
    }else if(name.equals("turn")){
        load.setCharacter(space);
        move = false;
    }else if(name.equals("finish")){
        load.setCharacter(space);
        move = false;
        Component frame = null;
        JOptionPane.showMessageDialog(frame,
                "Congratulations! You have completed the level.",
                "Level Completed",
                JOptionPane.PLAIN_MESSAGE);
    }else if(name.equals("wall")){
        move = false;
        Component frame = null;
        JOptionPane.showMessageDialog(frame,
                "The level was not designed correctly. Click 'Ok' to return to main menu",
                "Invalid Level",
                JOptionPane.ERROR_MESSAGE);
    }