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  Zombie Massacre  (Read 4352 times)
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Offline trollwarrior1
« Reply #30 - Posted 2013-11-12 21:33:31 »

Didn't think of that Tongue

I'm going to sleep btw. Good night.
Offline trollwarrior1
« Reply #31 - Posted 2013-11-22 12:39:45 »

Hi jGamers.

Download the latest version of this game @

https://www.mediafire.com/?37p9pu7fumik7dn
Offline matheus23

JGO Kernel


Medals: 106
Projects: 3


You think about my Avatar right now!


« Reply #32 - Posted 2013-11-22 14:49:47 »

One very, very important thing I'd like to add:

Imagine you've got two circles, a and b. If you want the two circles not to collide, you need to check whether the distance between the two circles is greater than the combined radii:

a.radius + b.radius < distance

So thats exactly what you do, let's fill in the distance formular:

dx = b.x - a.x
dy = b.y - a.y
a.radius + b.radius < sqrt(dx * dx + dy * dy)


So what's the problem with this? The problem is that
sqrt()
is a (relatively) very slow operation. To get rid of it, simply take the square of the terms:

a.radius + b.radius < sqrt(dx * dx + dy * dy)
<=>
(a.radius + b.radius)² < dx * dx + dy * dy


And in the end that's much faster. It might be premature optimization, but it takes almost no time to understand and change.

I Hope I'm helpful Smiley

See my:
    My development Blog:     | Or look at my RPG | Or simply my coding
http://matheusdev.tumblr.comRuins of Revenge  |      On Github
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline trollwarrior1
« Reply #33 - Posted 2013-11-28 19:33:39 »

Check out the new version. It is pretty playable Tongue
Offline drdracula

Junior Member


Medals: 2
Projects: 1
Exp: 2 years


Mate Box


« Reply #34 - Posted 2013-11-28 20:23:19 »

The game makes really fun. Smiley Do you want to add some other kinds of zombies?

Programming, Design, Tutorials : http://www.matebox.bplaced.net
Offline trollwarrior1
« Reply #35 - Posted 2013-11-28 20:37:55 »

The game makes really fun. Smiley Do you want to add some other kinds of zombies?

Not really. This was supposed to be kinda game like this. Just shoot them and that's it Cheesy
Online ags1

JGO Ninja


Medals: 53
Projects: 2
Exp: 5 years


Make code not war!


« Reply #36 - Posted 2013-11-28 22:24:01 »

So what's the problem with this? The problem is that
sqrt()
is a (relatively) very slow operation. To get rid of it, simply take the square of the terms...

And in the end that's much faster. It might be premature optimization, but it takes almost no time to understand and change.

I Hope I'm helpful Smiley

Yes you are helpful. I will use this in my shaders, which use sqrt() quite a lot.

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