Comments on: Move with the Keyboard, Aim with the Mouse

By: Michael Williams

Michael Williams — Thu, 28 Jan 2010 04:21:04 +0000

Well, there’s a very simple explanation for why the “= distance =” is there: it’s a typo

I’ve corrected it now, thanks for pointing it out. But for the record, you can write code like that. Suppose I wrote:

someVar = someOtherVar = aThirdVar;

…then that’s the same as writing:

someOtherVar = aThirdVar;
someVar = someOtherVar;

…so that’s a useful shortcut sometimes. In this case, though, I just copied and pasted something incorrectly.

By: DudexD

DudexD — Tue, 26 Jan 2010 17:51:19 +0000

I got rid of the Non-focusing game problem after i did this part too, since i’m not using WASD anymore

But i got a question about the



var totalDist:number = distance = Math.sqrt( ( xDirection * xDirection ) + ( yDirection * yDirection ) );

the thing i don’t understand is the = distance =, Since when i first added it i got a error, That i got rid of simply by making a Public var distance:Number

But then the bullet disapeared :S… And then suddenly in ur code up there you removed it again so i don’t totlay understand the point of this little word…

By: Michael Williams

Michael Williams — Mon, 28 Dec 2009 23:53:45 +0000

Hey Queepo,

Nice idea. How about this:

Add a new public var to the Enemy class -- something like, public var health:int;. Then, in your constructor, set it to whatever value you like (best to test it out with something small, I reckon).

Then, in your if ( enemyHasBeenHit ) section, you'll be able to see how much health that particular enemy that's just been hit has left, via enemy.health. So at that point you can subtract a health point, or destroy the enemy if it's out of health. And of course you can change the appearance of the enemy or make it play a different animation or whatever.

Hope that helps!

By: Queepo

Queepo — Mon, 21 Dec 2009 05:59:44 +0000

Hey, i was wondering if you could help me give the enemies health by making it take more than 1 shot to kill them. I tried many different ways but I was not able to set a variable to each enemy in the array. Thanks

By: Michael Williams

Michael Williams — Sun, 20 Dec 2009 02:39:32 +0000

Thanks Alex! That is a really cool gameplay mechanic you’ve got there. Having to decide whether to race towards the dodgeball to try to get it before the enemy, or to run away so that there’s room to dodge — great stuff!

By: AlexB

AlexB — Thu, 17 Dec 2009 17:22:11 +0000

Hello, i would like make a congratulation for your Tutorial. With this I learned the the basics of OOP. If you like check my Dodgeball extreme Flash-Shooter: http://abahlk.de/projects/dodgeball/

Bye Alex

AlexB´s last blog: Dodgeball extreme: Der neue Flash-Shooter

By: Michael Williams

Michael Williams — Sat, 14 Nov 2009 19:35:47 +0000

Hehe nice, well done

By: PLyczkowski

PLyczkowski — Fri, 13 Nov 2009 21:44:15 +0000

Thanks for checking my site.

I noticed the = seconds after posting, I'm so proud - I'm a total beginner at programming.

I'll try to implement this idea, cheers.

By: Michael Williams

Michael Williams — Fri, 13 Nov 2009 20:13:00 +0000

Hey PLyczkowski (cool site by the way),

Yeah, that code looks like a good place to start (watch out though — you’ve got “=” instead of “==” inside your if statements).

I can see a few interesting directions you could take this in; please let me know how you get on with it

By: PLyczkowski

PLyczkowski — Wed, 11 Nov 2009 20:24:56 +0000

Hey there, I wanted to add a feature to choose bullet type to the code. At first I tried to use eval to dynamically place a bullet type according to a variable, but since eval is not available in AS3, I abandoned the idea. Then I tried to use conditions. Are conditions the proper way?

Here is the idea (or part of it):



public function createNewBullet( startingXDirection:Number, startingYDirection:Number ):void {
            if (activeBullet=1){
                                var newBullet=new Bullet(startingXDirection, startingYDirection);
                }
            else if (activeBullet=2){
                var newBullet=new Bullet2(startingXDirection, startingYDirection);
            }