ActionScript 3.0 :: Design A Class That Uses Functions From Multiple Classes?
Jun 7, 2011
I'm trying to design a class that uses functions from multiple classes, but as Google tells me, you cannot extend multiple classes.
Here's my code:
Code:
package com.levelGenerator {
import flash.display.Sprite;
import flash.events.KeyboardEvent;
[code]...
How do I use the Keyboard functions and nextFrame() without extending multiple classes?
P.S. A language with object-oriented principles that doesn't allow multiple inheritance? Lame...
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[code]......
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package {
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[Code].....
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If I have a class that extends another, e.g.,
package {
import flash.display.Sprite;
public class MySprite extends Sprite{
[Code]....
and extend that class, if more than one internal classes are defined:
package {
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public function MainClass():void{}
[Code]....
ReferenceError: Error #1065: Variable MainClass is not defined.Note that this only happens (as far as I can tell) when the public class of the package extends another class, and multiple internal classes are defined. The internal classes don't even need to be instanced or referenced to generate the error (the bare-bones code above will error out). If only a single internal class is defined, it works fine (no error). Even if the internal class is instanced.
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Let's I have a class Square that has a several functions. I want to call it from a class Grid, which is a group of Squares.So in the class file for Grid, how would I do this:
Code:
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[code]......
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Jan 9, 2010
The examples I'll use don't do anything - they're classes without ANY members - no variables, methods, anything.
Let's say I extends Sprite and call it MySprite.
I save it in test.core
[code]...
Now I create another custom class called MyWindow that extends MySprite.
I save it in test.windows
[code]...
Then I create another class that extends MyWindows (the example I'll use is a document class - but that doesn't matter - I've tested using an instance too).
[code]...
Notice that I'm not even trying to instantiate the helper classes - just having them there throws the error.
If there is only a single helper class, everything runs fine.
Also note that - as far as I can tell - this only happens when extending one class from another package, then extending that class with more than one helper object.I'm pretty sure there's no namespace bumps or typographical errors, as this is a very pared-down version of the original application.
EDIT: seems the problem exists even without the crossing packages - even extending MySprite in the document class with multiple internal classes generates this error.
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One class
Code:
package
{
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I've been working my way towards better OOP design lately and I've come across a problem with accessing functions in other classes from my Main class. Here is the code:
Main.as
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stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
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stage.addEventListener(KeyboardEvent.KEY_DOWN, fireBullet);
They are listening for functions that are within the Player.as class, these functions control the dynamics/movement of the player itelf. But for some reason I'm getting a 1120 error(access of undefined property). Basically how do you listen/access for functions within a different class?
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ActionScript Code:
package
{
[code].....
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Code:
package com.MyClass.basics1
{
//importing classes to use[code]...
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Code:
package{
import flash.display.*;
[code].....
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I was wondering if ActionScript had some way to call functions and classes from variables, like they do in PHP:
function funcname() {
print "Potatoes come from tree";
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$function = "funcname";
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$$function(); // Prints out "Potatoes come from tree"
In case you don't know the syntax for PHP, you should know that anything perpended with a $-symbol is a variable.
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[Code]...
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