AS3键盘控制
|
我有一个as3函数，可使用键盘控制影片剪辑：
包
{
import flash.display.MovieClip;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
import flash.events.Event;
public class Main_Character_Two extends MovieClip
{
var vx:int;
var vy:int;
public function Main_Character_Two()
{
init();
}
function init():void
{
//initialize variables
vx = 0;
vy = 0;
//Add event listeners
stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
stage.addEventListener(KeyboardEvent.KEY_UP, onKeyUp);
addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
function onKeyDown(event:KeyboardEvent):void
{
if (event.keyCode == Keyboard.LEFT)
{
vx = -5;
}
else if (event.keyCode == Keyboard.RIGHT)
{
vx = 5;
}
else if (event.keyCode == Keyboard.UP)
{
vy = -5;
}
else if (event.keyCode == Keyboard.DOWN)
{
vy = 5;
}
}
function onKeyUp(event:KeyboardEvent):void
{
if (event.keyCode == Keyboard.LEFT || event.keyCode == Keyboard.RIGHT)
{
vx = 0;
}
else if (event.keyCode == Keyboard.DOWN || event.keyCode == Keyboard.UP)
{
vy = 0;
}
}
function onEnterFrame(event:Event):void
{
//Move the player
player.x += vx;
player.y += vy;
}
}
没有找到相关结果
已邀请:
4 个回复
殿虫
循环中，并使用和设置布尔值并将播放器定位在循环中，如下所示： var leftIsPressed：Boolean = false; var rightIsPressed：Boolean = false; var upIsPressed：Boolean = false; var downIsPressed：Boolean = false; var speed：Number = 5; var vx：Number = 0; var vy：Number = 0; stage.addEventListener（KeyboardEvent.KEY_DOWN，keyDownHandler）; stage.addEventListener（KeyboardEvent.KEY_UP，keyUpHandler）; stage.addEventListener（Event.ENTER_FRAME，enterFrameHandler）; 函数keyDownHandler（e：KeyboardEvent）：void { 开关（e.keyCode）{ case Keyboard.LEFT：leftIsPressed = true;打破; case Keyboard.RIGHT：rightIsPressed = true;打破; case Keyboard.UP：upIsPressed = true;打破; case Keyboard.DOWN：downIsPressed = true;打破; } } 函数keyUpHandler（e：KeyboardEvent）：void { 开关（e.keyCode）{ case Keyboard.LEFT：leftIsPressed = false;打破; case Keyboard.RIGHT：rightIsPressed = false;打破; case Keyboard.UP：upIsPressed = false;打破; case Keyboard.DOWN：downIsPressed = false;打破; } } 函数enterFrameHandler（e：Event）：void { vx = -int（leftIsPressed）* speed + int（rightIsPressed）* speed; vy = -int（upIsPressed）* speed + int（downIsPressed）* speed; player.x + = vx; player.y + = vy; } [编辑]添加了更详细的示例。 当然，在这种情况下，如果同时按下左右键，将导致偏移。浩挎
来确定何时释放琴键，这样您就可以追踪哪些琴键被按住。脾萌
事件，因此您的角色在您将手指从LEFT键上抬起后便会停止，因为没有新的事件被触发会导致角色移动。 您可能可以通过添加一个ѭ3checks事件来完成操作，该事件检查事件触发时是否查看是否按住了其他箭头键，但是您可能需要将当前代码重构为避免重复自己。公藕
function onKeyUp(event:KeyboardEvent):void { if (event.keyCode == Keyboard.LEFT || event.keyCode == Keyboard.RIGHT) { vx = 0; } else if (event.keyCode == Keyboard.DOWN || event.keyCode == Keyboard.UP) { vy = 0; } }if (event.keyCode == Keyboard.LEFT || event.keyCode == Keyboard.RIGHT) { vx = 0; }