我有一个可以向上,向下,向左和向右移动的MovieClip。如果MovieClip碰到一堵墙,那么MC会弹跳,不应该越过墙 - 但如果你继续按下你的上,下,左或右键,并且不要放手 - MovieClip将会过去墙。我正试图找出一种方法,阻止它发生。 link of movement
// function hitWall --------------------------------------------------------------
function hitWall(event:Event):void {
if (box.hitTestObject(wall)) {
box.y+=6;
} else if (box.hitTestObject(wall2)) {
box.y-=6;
} else if (box.hitTestObject(wall3)) {
box.x+=6;
} else if (box.hitTestObject(wall4)) {
box.x-=6;
}
}
// function keyDownEvent ------------------------------------------------------------
function keyDownEvent(event:KeyboardEvent):void {
switch (event.keyCode) {
case Keyboard.UP:
keyUpward = true;
keyDownward = false;
break;
case Keyboard.DOWN:
keyDownward = true;
keyUpward = false;
break;
case Keyboard.LEFT:
keyLeft = true;
keyRight = false;
break;
case Keyboard.RIGHT:
keyRight = true;
keyLeft = false;
break;
}
}
// function keyUpEvent ------------------------------------------------------------
function keyUpEvent(event:KeyboardEvent):void {
switch (event.keyCode) {
case Keyboard.UP:
keyUpward = false;
break;
case Keyboard.DOWN:
keyDownward = false;
break;
case Keyboard.LEFT:
keyLeft = false;
break;
case Keyboard.RIGHT:
keyRight = false;
break;
}
}
// function frameloop ------------------------------------------------------------
function frameloop(event:Event):void {
if (keyUpward) {
forwardMove -=2;
}
if (keyDownward) {
forwardMove += 2;
}
if (keyLeft) {
sideMove -= 2;
}
if (keyRight) {
sideMove += 2;
}
forwardMove +=(0-forwardMove)/inertia;
sideMove +=(0-sideMove)/inertia;
box.y+=forwardMove;
box.x+=sideMove;
}
答案 0 :(得分:2)
尝试使用enterframe事件侦听MovieClip的位置,当MovieClip超出范围时,您可以删除键盘事件侦听器或触发相反的键盘事件并使MovieClip以相反的方向反弹
请注意,它可能与您的hitWall()方法冲突,因此您可能最终不得不使用一个解决方案而不是另一个
答案 1 :(得分:0)
基本上,每次移动物体时,都必须测试它是否与墙壁碰撞。如果是,那么你必须将它的位置设置在“安全”区域内。您可以在frameloop的底部进行这些测试。