如何在我的if语句中添加多个命令？ JavaScript

Question

我觉得这个实例真的很简单，我可能已经想过了，但是有没有办法在if语句中添加多个语句？我正在寻找类似的东西，如果我选择在游戏中朝某个方向前进，则会收到“您决定访问商店。是否要探索？”的提示。并且有两个选项：

-是，然后在输入框中键入“是”，然后其结果为：“探索之后，您决定购买东西”

-不，您决定离开。

我一直试图找出一个小时，当我关闭时，即使您不在那个位置，该命令仍然可以访问。例如。我在游戏中的位置是：“您在公园里。在输入框中，如果在某个地方随机键入“是”，则命令将返回，“探索之后，您决定购买东西”

我想要它，因此，如果您在那个特定位置，则只能在该位置访问该代码，而不能在其他任何地方访问。

因此，如果您在公园中作为位置，并随机输入“是”，则不会发生任何事情，因为您不在商店的位置。

这是我的代码：

...

选择前进方向

<input id = "input" type = "text" placeholder = "Type 'Help1' for actions"/><button onClick = "button()">Confirm Action</button>
<p id = "message"></p>

<script>

  function button() {
    var textInput;
    var newInput = input.value;
    if (newInput == "North") {

      textInput = "you went to the Store. Do you explore?"; // <-- I'd like a way to put in "Yes" as a response which would print out a text saying "You explored the store and bought some food" //

      document.getElementById("message").innerHTML = textInput;

    }


    if (newInput == "North Again") {
      textInput = "you went to the Forest Home";
      document.getElementById("message").innerHTML = textInput;
    }

    if (newInput == "Help1") {
      textInput = "[Page 1 of 2. Type 'Help2' for page 2] Commands you can use: <ul><li>South</li><li>North</li><li>East</li><li>West</li><li>North Again</li><li>South again</li><li>West Again</li><li>East Again</li>";
      document.getElementById("message").innerHTML = textInput;
    }

    if (newInput == "Help2") {
      textInput = "[Page 2 of 2] Commands you can use: <li>North One More</li><li>East Once More</li><li>West Once More</li><li>South Once More</li>";
      document.getElementById("message").innerHTML = textInput;
    }
  }

</script>

</div>

<div id = "stat-box">
  <h2 align = "center">STATS</h2>
</div>

...

Answer 1

进行此类操作的基本方法是将游戏状态存储在变量中，并且每次用户运行命令时，您都需要修改游戏状态。签出此代码（如果将其放到站点中，它将起作用）：

<script>

var state = "init" // Initialize the game state

function button() {
    var textInput;
    var newInput = input.value;

    if (state == "init") {
        // Handle commands when game state is in "init"

        if (newInput == "Help1") {
            textInput = "[Page 1 of 2. Type 'Help2' for page 2] Commands you can use: <ul><li>South</li><li>North</li><li>East</li><li>West</li><li>North Again</li><li>South again</li><li>West Again</li><li>East Again</li>";
            document.getElementById("message").innerHTML = textInput;
        } else if (newInput == "Help2") {
            textInput = "[Page 2 of 2] Commands you can use: <li>North One More</li><li>East Once More</li><li>West Once More</li><li>South Once More</li>";
            document.getElementById("message").innerHTML = textInput;
        } else if (newInput == "North") {
            textInput = "you went to the Store. Do you explore?";
            state = "store"
            document.getElementById("message").innerHTML = textInput;
        }

    } else if (state == "store") {
        // Handle commands when game state is in "store"

        if (newInput == "Yes") {
            textInput = "There's a giant dragon in the cereal asile. Do you fight it?";
            state = "dragon"
            document.getElementById("message").innerHTML = textInput;
        } else if (newInput == "No") {
            // Change the state to something else
        }

    } else if (state == "dragon") {
        // Handle commands when game state is in "dragon"

        if (newInput == "Yes") {
            textInput = "You slayed the dragon!";
            document.getElementById("message").innerHTML = textInput;
        } else if (newInput == "No") {
            textInput = "You got eaten";
            document.getElementById("message").innerHTML = textInput;
        }

    }
}

</script>

Answer 2

看看状态机的结构。您应该将用户的当前状态存储在游戏中，并在每次按下按钮时进行检查。

状态机设计模式将检查播放器当前所在的位置，并采取相应的措施。

    var state = 'asked_for_direction';
    if (state == 'asked_for_direction' && newInput == "North") {

      textInput = "you went to the Store. Do you explore? (Yes/No)";

      document.getElementById("message").innerHTML = textInput;
      state = 'north';
    }

    if (state == 'north' && newInput == "Yes") {
      textInput = "You explored the store and bought some food";

      document.getElementById("message").innerHTML = textInput;
      state = 'north_explored';
    }

    if (state == 'north' && newInput == "No") {
      textInput = "You decided to leave";

      document.getElementById("message").innerHTML = textInput;
      state = 'asked_for_direction';
    }


    if (state == 'north' && newInput == "North Again") {
      textInput = "you went to the Forest Home";
      document.getElementById("message").innerHTML = textInput;
      state = 'forest_home';
      // Add how many states as you want
    }

我不知道您游戏的确切结构，但是请确保您可以扩展此代码。