2D AS3 Tile Engine with physics

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08-28-2007, 11:30 AM
rje

2D AS3 Tile Engine with physics
I'm working on a 2D Tile Engine with the following capabilities:
- 100% AS3 - can be built and extended with open source tools
- Physics System
- Particle System
- Very large scrolling level support > 1000x1000 tiles
- Enemy AI tool kit
- Projectile/Weapon system
- Very efficient CPU/Memory usage
It is, in part, based on a number of projects and articles available to everybody:
- Collision detection - The metanet N tutorials
- Physics - Ideas from APE: Alec Coves Actionsctipt Physics Engine
- Various blogs (Andre Michelle, Michael Baczynski etc)
- Wikipedia :-)
I'm building it as generic as possible - if anybody wants to help out (theres lots to do) then let me know.

You can find the demo & source here: http://yaa-blog.blogspot.com/
08-28-2007, 12:03 PM
EvilKris

Good work, friend.

Your engine could be used for a sweet 'Exile' remake..
08-28-2007, 12:06 PM
renderhjs

nice engine,
though personally I prefer tutorials instead of fix kits. Are you planning on breaking some elements apart from it like Sandy did with their distorsion class? or explaining in depth how some things were approached?
08-28-2007, 12:23 PM
rje

Quote:

Originally Posted by EvilKris

Good work, friend.

Your engine could be used for a sweet 'Exile' remake..

Thanks, well spotted - That is exactly why I'm writing it....

Now I just need somebody who has the original map generation algorithm....
08-28-2007, 12:28 PM
rje

Quote:

Originally Posted by renderhjs

nice engine,
though personally I prefer tutorials instead of fix kits. Are you planning on breaking some elements apart from it like Sandy did with their distorsion class? or explaining in depth how some things were approached?

Well, it is in part based on other tutorials. I really wanted an engine to recreate a game (see previous post). I noticed a lack of 2D game engines that had the features I needed to I wrote this as functional engine rather than tutorial.

The trouble I find this physics engine/kits is that they are trying to solve a general case - that can be expensive in terms of CPU. I found that with APE and Fisix (2 AS3 physics toolkits), not much CPU left to implement all the things I need.
08-28-2007, 12:42 PM
Sauceofallevils

Wow this is really neat rje! I really like what you have done, this is similar to what I was planning on doing for my games battle mode. Good work man!
08-28-2007, 05:56 PM
OpethRockr55

Excellent work, rje! I like to see some new up and coming Flash engines, even though I'm through with all that. Are you planning on physically simulating the boxes (i.e. implementing rotation) and if so how? It was a pain in the butt to get one of my projects to resolve collisions correctly, but I think it was because of the way I simulated the boxes.
08-28-2007, 08:25 PM
EvilKris

Thanks, well spotted - That is exactly why I'm writing it....

Original map algorithm? Ever tried writing to the original creators? You'd be suprised at how responsive they can be sometimes. I wrote to Archer Maclean (IK+) about 10 years ago just for a little advice about a game and he was a nice guy, we swapped mails for a while.
08-29-2007, 04:18 AM
rje

Quote:

Originally Posted by OpethRockr55

Are you planning on physically simulating the boxes (i.e. implementing rotation) and if so how? It was a pain in the butt to get one of my projects to resolve collisions correctly, but I think it was because of the way I simulated the boxes.

I've been thinking about that for a while. At the moment the collision code is all based on axis aligned boxes. The benefit is that its fast, very fast (see the N tutorials). If I wanted to rotate things then I'd have to recalculate my projections all the the time. Nice but that's gona eat up cpu. At the moment I can dump >100 boxes into the level and it handles it without any slowdown.

The other thing I was thinking about is do I need rotations? Whilst its more accurate, it makes the environment more difficult to interact with. I'm writing this engine to recreate Exile - that was great to play, the physics part was fun and there were no rotations.
08-29-2007, 05:33 AM
mr_malee

I'm keeping a close eye on motor physics, by the guy at polygonal labs

http://lab.polygonal.de/2007/07/16/updates-2/

Yours looks very nice too. Is this supposed to be an Engine which others will use? or just for exile?
08-29-2007, 05:46 AM
rje

I've been doing the same. Also APE (Actionscript Physics Engine) is actually understandable (the source is very well structured).

Its going to be an engine as well, I'll try and maintain the core as a separate project. The source (not up to date) is actually on that page somewhere.

If anybody wants to help out, let me know, there is plenty to do. One BIG thig to do is a level editor. I think something quite functional could be created on a week or so....
08-29-2007, 06:13 AM
Squize

That's as sweet as you like, nice work mate ( And looking at it now, I can see why Exile sprung to mind for Kris ).

Squize.
08-30-2007, 08:40 AM
random10122

Just wanted to say, nice work - i was thinking of doing something similar sometime this year but now i don't have to :-) There are a lot of middleware solutions in the console industry but very few for flash..

The trick will be to make sure that the documentation is good enough that people will actually use it rather than creating their own..
08-30-2007, 08:54 AM
charlie_says

Ha, that's very nice!

Although, not flash, there's an exile remake in the offing...

http://exile.ovine.net
08-30-2007, 09:28 AM
rje

Quote:

Originally Posted by random10122

Just wanted to say, nice work - i was thinking of doing something similar sometime this year but now i don't have to :-) There are a lot of middleware solutions in the console industry but very few for flash..

The trick will be to make sure that the documentation is good enough that people will actually use it rather than creating their own..

Thanks, hopefully I'll release the latest source this weekend, with some comments. Documentation will be later (without help)....
08-30-2007, 09:30 AM
rje

Quote:

Originally Posted by charlie_says

Ha, that's very nice!

Although, not flash, there's an exile remake in the offing...

http://exile.ovine.net

I didn't realize so many people were familiar with Exile... Does the exile in you homepage mean anything? I went there but go nothing but a black screen...
08-30-2007, 09:33 AM
programicks

Very nice physics there. I am still yet to even touch AS3 but I can see what the buzz is all about.

I see that latest update of the flash beta is mentioned on your blog. This blog then, and flash kit, I will be looking out for mention of the latest full version of the next flash player.
11-12-2007, 06:21 AM
charlie_says

Just to let everyone know.
The exile remake is now available for download here
11-12-2007, 09:16 PM
EvilKris

Well well, excellent work. Wonder if that's still AS3. Seems to run at a good fps even though it's full screen.
11-13-2007, 06:07 AM
charlie_says

no, I don't think it was done in Flash, I was really just pointing it out in case anyone was interested.
11-16-2007, 12:12 PM
Sietjp

That's great work. (except for using wasd key in the demo, that is impossible to play with azerty keyboards).
11-16-2007, 12:42 PM
Cortana

I've never seen a azerty keyboard...
11-16-2007, 01:53 PM
Never_land:(

cool you sliced the screen´s drawings making it easier to render
11-16-2007, 02:21 PM
Sietjp

Quote:

Originally Posted by Cortana

I've never seen a azerty keyboard...

This is one. Can you imagine how much difficult it is to play a wasd game with this keyboard ?
http://bblfish.net/tmp/2004_09_29/ti...y_keyboard.jpg
11-16-2007, 03:22 PM
Cortana

lol! ouch... its hard enough playing games on laptops as it is
11-16-2007, 05:54 PM
rje

I really should finish this engine.... Maybe implement a ZQSD scheme....
11-17-2007, 06:19 PM
Sietjp

Quote:

Originally Posted by mr_malee

I'm keeping a close eye on motor physics, by the guy at polygonal labs

http://lab.polygonal.de/2007/07/16/updates-2/

Yours looks very nice too. Is this supposed to be an Engine which others will use? or just for exile?

Thanks for this post, I've subscribed to their RSS, the engine should go open source before the end of the year! It seems it is very perfomant, and I had never seen an engine allowing any kind of polygon. This really exciting.

@rje ZQSD :)
Or ESDF which is common to qwerty and azerty keyboards.
11-17-2007, 06:28 PM
rje

Actually the Motor Physics Engine is (as far as I understand) based on Erin Catto's Box2D C++ physics engine.

There is another AS3 port of this engine here (just released):

http://box2dflash.sourceforge.net/
11-18-2007, 04:03 AM
mr_malee

rje, wow, that looks amazing

how many physics engines are there now?
11-18-2007, 02:40 PM
rachil0

Really enjoyed that link - I love the rube goldberg example.
11-18-2007, 07:35 PM
Flashkit

rje that engine is sex on a stick.
11-19-2007, 04:17 AM
rje

Just to be clear - I had nothing to do with it (Box2D)- just posting the link. I was going to port it myself by skatehead beat me to it. Shame - I was looking forward to converting all that C++ to Actionscript....
11-19-2007, 11:18 AM
EvilKris

That's brilliant, really really impressive.
I'd love to see someone do a rigid physics vehicle demo, like cars smashing into each-other and bits flying off.

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