Andy Girvan Blog - Latest Comments

Re: Balancing Personal and Professional Development Projects

Andy G — Wed, 04 May 2011 11:33:55 -0000

Thanks, I hope it helps you out :)

Re: Balancing Personal and Professional Development Projects

Frazzled Penguin — Mon, 02 May 2011 23:48:54 -0000

Great document. I don't normally post comments on blogs, that's how much I like this document. :) (BTW, I found your site via a google search for iphone app collision detection).

Re: Balancing Personal and Professional Development Projects

Lauhug — Tue, 19 Apr 2011 10:51:27 -0000

I finally read it! And even though you make me out to be the demanding, distracting other half, I love this post! Just remember who did your graphics, eh?! x

Re: LA to NYC road trip done 4 minutes

www.markpeekrealestate.com — Thu, 03 Feb 2011 07:26:43 -0000

Love it! Great video!

Re: Simple Cocos2D Collision Detection

M.Mac — Fri, 28 Jan 2011 08:49:14 -0000

Just discovered I could use a built-in cocos2d method: boundingBox

So my whole collision detection code is:
CGRect mouseRect = [mouse boundingBox];
CGRect dogRect = [dog boundingBox];

if (CGRectIntersectsRect(mouseRect, dogRect)) {
//[fichiersToDelete addObject:fichier];
NSLog(@"Touché");
}

But in my case, many dogs are appearing and are in an NSMutableArray and I can't make my dog_ array work with this method. What am I forgetting?

(And I am declaring my NSMutableArray with this in my header: NSMutableArray *dog_; )

Re: Simple Cocos2D Collision Detection

M.Mac — Thu, 27 Jan 2011 20:08:38 -0000

I did declare getBounds and I triple-checked my code for typos and copy-pasted yours (and changed the sprite names) and I still received the same error:

Invalid initializer

And player.m is importing player.h.
And gamescene.m is importing player.h

Though, I found a "dirty" way to make it work, but I think this way of doing it would give me a lot of trouble if i decide to use a lot of sprites:

CGRect mouseRect = CGRectMake(mouse.position.x, mouse.position.y, mouse.contentSize.width, mouse.contentSize.height);
CGRect dogRect = CGRectMake(dog.position.x, dog.position.y, dog.contentSize.width, dog.contentSize.height);
if(CGRectIntersectsRect(mouseRect,dogRect)) {
[[CCDirector sharedDirector] replaceScene:[GameOver scene]];
}

This method works, but requires a lot (relatively) of coding for each sprite.

I will now try to implement my technique in the getBounds method.

But I still get the errors.

Oh, and in the second code snippet in your tutorial, I think you forgot to add an - before (CGRect), I did "correct" this in my project because it gave me an error if I removed the -. Do you think it is the cause of my issue?

Thank you

Re: Simple Cocos2D Collision Detection

Andy G — Thu, 27 Jan 2011 04:20:44 -0000

Have you declared getBounds in your new class's header file. It should look something like:
"-(CGRect) getBounds"

That means the method is properly declared and hopefully will be stop the errors throwing!

Let me know how you get on with this :)

Re: Simple Cocos2D Collision Detection

M.Mac — Tue, 25 Jan 2011 20:52:41 -0000

OK, I wrote everything like you said, but I keep getting two errors, these 2 lines:
CGRect mouseRect = [mouse getBounds];
CGRect dogRect = [dog getBounds];

For each line the debugger says:
'CCSprite' may not respond to '-getBounds'
(Messages without a matching method signature will be assumed to return 'id' and accept '...' as arguments.)

And:

Invalid initializer

Who made the error? Me or you? Because I think I did everything right, and my sprites are initialized and everything..

Can you help me?

Thanks

Re: Simple Cocos2D Collision Detection

Andy G — Wed, 05 Jan 2011 09:16:24 -0000

hope it helped :)

Re: Ultima Online – An Isometric Trip Down Memory Lane

LSAT Study Guide — Mon, 27 Dec 2010 05:57:59 -0000

Please bear with me as I take a trip down memory lane and share some of the best examples of games employing pre-rendered backgrounds with you.

Re: Simple Cocos2D Collision Detection

ZaldzBugz — Wed, 15 Dec 2010 07:44:02 -0000

nice one man

Re: Adding custom post types to WordPress 3

PKGMULLET — Wed, 20 Oct 2010 15:03:24 -0000

Do you know how to include the podpress meta box in a custom post type?

Re: Ultima Online – An Isometric Trip Down Memory Lane

Ben — Tue, 19 Oct 2010 19:49:42 -0000

I totally agree UO ruled. went down hill as soon as they introduced the NO PK universes

Re: Quick Tips – jQuery: Giving your selectors some context

Andy G — Tue, 13 Jul 2010 06:57:13 -0000

Additionally there is a great stackoverflow article about this:

http://stackoverflow.com/quest...

Re: Quick Tips – jQuery: Giving your selectors some context

Andy G — Tue, 13 Jul 2010 06:13:31 -0000

Actually there is a subtle difference.

The way $('ul.menu li') would work would be to search through the DOM to find all list items within a located ul.menu.

The other way of doing it - $('li','ul.menu') would only target the unordered list when performing the search.

Re: Quick Tips – jQuery: Giving your selectors some context

Seb — Tue, 13 Jul 2010 04:31:31 -0000

$('li','ul.menu'); is functionally equivalent to $('ul.menu li'); Far more useful, I find, are the is the ability to pass another jQuery object as the second parameter, e.g. the results from an earlier query, or a dom object, such as the document object of an external xml file retrieved from an ajax query.

var menu = $('ul.menu');
$('li', menu);

Re: Blog Zero

Andy G — Tue, 06 Jul 2010 06:15:25 -0000

Still going strong...