切换键盘输入

Question

追踪＆＃34; moveState＆＃34;显示变量始终位于开关的默认选项中，即使我按下A或D键也是如此。

var keys：Array = [];

private function onKeyUp(e:KeyboardEvent):void 
{
    keys[e.keyCode] = false;
}

private function onKeyDown(e:KeyboardEvent):void 
{
    keys[e.keyCode] = true;
}

在更新功能中我有这个，

switch (keys)
{
    case Keyboard.A:
    moveState = "LEFT";
    break;
    case Keyboard.D:
    moveState = "RIGHT";
    break;
    default:
    moveState = "STOP"; 
    break;
}

Answer 1

它始终显示默认值，因为变量键是一个数组，因此它不具有Keyboard.A的值。

我的建议：更新keyUp和keyDown函数中的moveState变量，并使用update函数内的moveState向左或向右移动。

private function onKeyUp(e:KeyboardEvent):void 
{
  switch(e.keyCode){
    case Keyboard.A:
     moveState = "LEFT";
     break;
    case Keyboard.D:
     moveState = "RIGHT";
     break;
  }
}

private function onKeyDown(e:KeyboardEvent):void 
{
  moveState = "STOP";
}