鼠标按钮一直被按下而不是单击答案

【问题标题】：Mouse button keeps being pressed instead of clicking鼠标按钮一直被按下而不是单击
【发布时间】：2019-05-14 16:21:55
【问题描述】：

我目前正在开发一款单机游戏。游戏很大程度上基于点击按钮，这就是问题发生的地方。每当我按住鼠标左键然后将其移到游戏中的某个按钮上时，该按钮就会立即被点击。

我尝试通过多种方式解决此问题，通过以不同方式重新排列 if 语句，添加额外的 bool 以检查是否单击了鼠标按钮等。但没有任何运气。也没有在任何地方找到任何解决方案。

public override void Update(GameTime gameTime)
{
    MouseState state = Mouse.GetState();

    if (new Rectangle((position - ElementCenter).ToPoint(), sprite.Bounds.Size)
           .Contains(state.Position) && oldState.LeftButton == ButtonState.Released)
    {
        renderColor = Color.LightSlateGray;
        if (state.LeftButton == ButtonState.Pressed &&
            oldState.LeftButton == ButtonState.Released)
        {
            switch (button)
            {
                case "UI/submit":
                    if (GameWorld.Instance.Team.UserTeamName.Length > 0)
                    {
                        GameWorld.Instance.SubmitTeamName();
                    }
                    break;
                case "UI/teammanager":
                    GameWorld.Instance.TeamManager();
                    break;
                default:
                    break;
            }
        }
    }
    else
    {
        renderColor = Color.White;
    }
    oldState = state;
}

理想情况下，我希望只有在单击按钮之前释放鼠标左键时才能单击按钮。

【问题讨论】：

标签： c# monogame

【解决方案1】：

如果oldState被声明为实例字段，这个类的不同实例会有不同的版本。即，旧状态可能会丢失。

将oldState 声明为static！

private static MouseState oldState = Mouse.GetState();

【讨论】：

【解决方案2】：

我通常使用这样的类来读取输入

public class InputManager
{
    KeyboardState currentKeyboard, previousKeyboard;
    MouseState currentMouse, previousMouse;

    public bool LeftKeyIsHeldDown { get; private set; }
    public bool RightKeyIsHeldDown { get; private set; }
    public bool JumpWasJustPressed { get; private set; }
    public bool FireWasJustPressed { get; private set; }

    public void Update()
    {
        previousKeyboard = currentKeyboard;
        currentKeyboard = Keyboard.GetState();

        previousMouse = currentMouse;
        currentMouse = Mouse.GetState();

        LeftKeyIsHeldDown = currentKeyboard.IsKeyDown(Keys.A);
        RightKeyIsHeldDown = currentKeyboard.IsKeyDown(Keys.D);
        JumpWasJustPressed =  currentKeyboard.IsKeyDown(Keys.Space) && previousKeyboard.IsKeyUp(Keys.Space);
        FireWasJustPressed = currentMouse.LeftButton == ButtonState.Pressed && previousMouse.LeftButton == ButtonState.Released;
    }
}

【讨论】：