我有10个错误（1120）与未定义属性的访问相关联。 onEnterFrame，onClick，onLeftClick，MouseUp，onUpClick，MouseUp，onDownClick，MouseUp，onRightClick和MouseUp。
从.addEventListener fron第58行到第73行抛出错误
package
{
import flash.display.MovieClip;
import flash.events.KeyboardEvent;
import flash.ui.Keyboard;
import flash.events.Event;
import flash.events.MouseEvent;
public class FrogKatta extends MovieClip
{
// Create instances of library symbols
var car1:Car = new Car();
var car2:Car = new Car();
var truck1:Truck = new Truck();
var truck2:Truck = new Truck();
var frog:Frog = new Frog();
var FinishLine:finishLine = new finishLine();
var HealthBar:healthBar = new healthBar();
var vx:int = 0;
var vy:int = 0;
var hit:Boolean = false;
var carStart:Boolean = false;
var truckStart:Boolean = false;
public function frogKatta()
{
frog.x = 230;
frog.y = 375;
truck1.x = 545;
truck1.y = 230;
truck2.x = 560;
truck2.y = 235;
car1.x = 550;
car1.y = 78;
car2.x = 560;
car2.y = 80;
// add created instances to stage
addChild(frog);
addChild(truck1);
addChild(truck2);
addChild(car1);
addChild(car2);
// * PROBLEM WITH STAGE.ADDEVENTLISTENER
// Add event listener for keyboard
// PROBLEM STARTS HERE ***********
stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
stage.addEventListener(KeyboardEvent.KEY_UP, onKeyUp);
addEventListener(Event.ENTER_FRAME, onEnterFrame);
// Add Event for mouse click
stage.addEventListener(MouseEvent.CLICK, onClick);
// creating instance of onClick from the MouseEvent.CLICK
//Keyboard
left.addEventListener(MouseEvent.MOUSE_DOWN, onLeftClick);
// to move
left.addEventListener(MouseEvent.MOUSE_UP, MouseUp);
// to stop
up.addEventListener(MouseEvent.MOUSE_DOWN, onUpClick);
up.addEventListener(MouseEvent.MOUSE_UP, MouseUp);
down.addEventListener(MouseEvent.MOUSE_DOWN, onDownClick);
down.addEventListener(MouseEvent.MOUSE_UP, MouseUp);
right.addEventListener(MouseEvent.MOUSE_DOWN, onRightClick);
right.addEventListener(MouseEvent.MOUSE_UP, MouseUp);
// PROBLEM ENDS HERE****
// Keyboard functionality
function onKeyDown(event:KeyboardEvent):void
{
if (event.keyCode == Keyboard.LEFT)
{
vx = -5;
frog.play();
}
else if (event.keyCode == Keyboard.RIGHT)
{
vx = 5;
frog.play();
}
else if (event.keyCode == Keyboard.DOWN)
{
vy = 5;
frog.play();
}
else if (event.keyCode == Keyboard.UP)
{
vy = -5;
frog.play();
}
}
// Keyboard again to stop
function onKeyUp(event:KeyboardEvent):void
{
if (event.keyCode == Keyboard.LEFT || event.keyCode == Keyboard.RIGHT)
{
vx = 0;
frog.stop();
}
else if (event.keyCode == Keyboard.DOWN || event.keyCode == Keyboard.UP)
{
vy = 0;
frog.stop();
}
// Clicking Functionality
function MouseUp(event:MouseEvent):void
{
vy = 0;
vx = 0;
frog.stop();
}
// on"librarybutton name left" Click
function onLeftClick(event:MouseEvent):void
{
vx = -5;
frog.play();
}
function onUpClick(event:MouseEvent):void
{
vy = -5;
frog.play();
}
function onDownClick(event:MouseEvent):void
{
vy = 5;
frog.play();
}
function onRightClick(event:MouseEvent):void
{
vx = 5;
frog.play();
}
// on enter frame
function onEnterFrame(event:Event):void
{
frog.x += vx;
frog.y += vy;
truck1.x += -10;
car1.x += -20;
//Car1 & 2 SCREEN WRAPPING
if (car1.x <= -400)
{
car1.x = 550;
}
// If car 1 leaves screen add car to other side of the screen
if (car2.x <= -400)
{
car2.x = 550;
}
if (car1.x <= 135)
{
carStart = true;
}
// Screen wrap so if car is less than or equal to 135 in distance add another car
if (carStart)
{
car2.x += -15;
}
//Truck1 & 2
if (truck1.x <= -400)
{
truck1.x = 550;
}
if (truck2.x <= -400)
{
truck2.x = 550;
}
if (truck1.x <= 135)
{
truckStart = true;
}
if (truckStart)
{
truck2.x += -10;
}
if (frog.hitTestObject(truck1) || frog.hitTestObject(truck2) || frog.hitTestObject(car1) || frog.hitTestObject(car2))
{
frog.y += 10;
hit = true;
}
if (hit)
{
if (HealthBar.width < 10)
{
HealthBar.width = 0;
}
else
{
HealthBar.width -= 10;
}
}
if (HealthBar.width < 1)
{
//S.O.P you lose);
}
if (frog.hitTestObject(FinishLine))
{
removeChild(frog);
removeChild(FinishLine);
removeChild(car1);
removeChild(car2);
removeChild(truck1);
removeChild(truck2);
// addchild of you winning
}
}
}
}
}
}
答案 0 :(得分：0)
我相信你有一个括号问题。
在你的onKeyDown函数之前你需要一个'}'。
检查所有括号，在插入我告诉你的那个之后，你可能还会在文件的末尾添加一个。
这些行是个问题，因为代码中不存在上/下/左/右。如果它们是舞台实例，则它们可能未命名，因此您的代码将无法使用它们。如果是这种情况，请通过属性面板命名实例。
left.addEventListener(MouseEvent.MOUSE_DOWN, onLeftClick);
// to move
left.addEventListener(MouseEvent.MOUSE_UP, MouseUp);
// to stop
up.addEventListener(MouseEvent.MOUSE_DOWN, onUpClick);
up.addEventListener(MouseEvent.MOUSE_UP, MouseUp);
down.addEventListener(MouseEvent.MOUSE_DOWN, onDownClick);
down.addEventListener(MouseEvent.MOUSE_UP, MouseUp);
right.addEventListener(MouseEvent.MOUSE_DOWN, onRightClick);
right.addEventListener(MouseEvent.MOUSE_UP, MouseUp);
如果不关闭onKeyUp功能，还会遇到另一个支架问题。
这导致它认为你的所有事件处理程序都在该函数中。
但正如我在评论中所说，这不是一个调试您的应用程序论坛。
请按照我的要求花时间验证您的括号。当你没有花时间去检查那些被发现是一个问题的东西时，它并没有表现出对某人时间的太多欣赏。请花点时间验证每个功能的所有括号，这样可以节省很多时间。