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BoMToons
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Pendulum Physics

Posted by BoMToons - January 24th, 2008


One of my dreams for years has been to make a really solid and accurate platform game based around a "grappling hook" or, if you're a worms fan, a "ninja rope." I've tried time and again to get the physics right, but have always scrapped my work because the way the rope behaved just never felt right.

Well the rope swinging idea was re-kindled with the release of jmtb02's new game: Mr. Walter's Grand Excursion

I think jmtb02 would be one of the first to tell you that the rope swinging didn't feel quite "on" in his game, and that's because the physics of a pendulum are relatively difficult to translate into flash.

Well, luckilly, I mentioned my idea and frustration to Coaly and he used his big brain to build some actionscript 2 pendulum functions which were a snap to plug into my platform engine and are surprisingly accurate.

We were so pleased with the result, we decided to work on a game together. We both have some other projects we're working on for the next few months, but when those are done, get ready for one heck of a cool game...we're thinking kind of a Metroid-esque game where you wander around getting cool weapons and fighting bosses, with the grappling hook taking a large role in the gameplay. It should be interesting to see what parts of the game we each produce since both Coaly and I are in the limbo between being artists and coders.

Anyway, check out a demo of the engine, there are obviously things missing (like collision detection while swinging) but you'll soon see the "fun potential" for a game of this nature:

CONTROLS: WASD and MOUSE

http://www.bomtoons.com/grapple.html

Oh, and if you missed my post on Maul Balls, check it out!

And if you missed my attempt at animation for Luis' birthday, check out Luis vs. Ninja Turtle

Pendulum Physics


Comments

Wow, this is pretty awesome!

I've wanted to create a game involving a grappling hook for a really long time, too. This engine is really impressive, smooth, and intuitive. I was web slinging in no time. I hope you make a great game!

Whoah dude, that physics demo is really cool. I've been hoping someone would make a flash game with a similiar 'grappling' aspect ever since I played Spider-Man 2 on the original PS2. I never thought about the complexities of the pendulum physics before though.

It sort of sounds like your finished product will be something along the lines of the original Bionic Commando.

<a href="http://en.wikipedia.org/wiki/Bionic_Commando">http://en.wikipedia.org/wiki/Bionic_C ommando</a> if you're not familiar with it.

Really looking forward to see what you guys come out with man, PM me once it comes out, and I'll definitely check it out. (And most likely vote 5)

Loved bionic commando, but really loved WORMS 2 where the ninja rope separated the men from the boys.

yeah, I've been playin' Worms World Party for years, but I've always had trouble with the ninja rope, I somehow always end up sitting completely still, suspended in the air with the ability to go up or down, only so that I can fall directly down either manually, or when the turn timer runs out...

Haha, Worms World Party ftw ;D.

That engine is incredibly accurate, good luck ;)!

Awesome engine. This reeks of spiderman.

Have you seen "You found the Grappling Hook" by messhof? Same idea but minimal and 8 bit. Pretty cool

<a href="http://www.messhof.com/games/you_found_the_grappling_hook.php">http://www.messhof.com/games/you_foun d_the_grappling_hook.php</a>

I hadn't seen that, but it looks really cool and reeks of style.

I can somehow destroy the left wall if i let go of the grapple while on it. Look into that?

Otherwise, very good stuff, congratulate coaly, its much more accurate the jmtb02's (no offense to him), great work!

Yeah, as I mentioned, there's no collision detection while swinging, so if you release inside a wall, it'll "tunnel" you someplace random.

my bad, its just making me move to the top andlooks like im deleting the wall.

Great stuff =)

Wow, you guys did a fantastic job :D. Glad to see someone taking the initiative to up the Walters engine. Pendulum physics in Flash absolutely sucks and you guys really nailed it.

Thanks, I have tried and failed at making this engine so many times...good thing coaly knows how to do maths.

oh man. i cannot wait. its been so long since my roping days of worms 2... cr8, ktl... good times. i know im not going to be the only one anxiously waiting for this lol. good luck with it XD

Cool stuff.. This reminded me of nintendos Bionic Commando... that game was THE SHIT.

THHHHEEEEEEE SHIT.

*PS thanks for the toon. <3

This is a good example of a pendulum:

<a href="http://www.nekogames.com/shockwaveflash/furikoneko.html">http://www.nekogames.com/shockwavefla sh/furikoneko.html</a>

Heya. I like your engine, it works well. If you could build a full shooty platformer with a cool grappling hook it'd be amazing. I can almost see the art style now.

We loved the grappling hook sections in Worms so much, we decided to make a game that was a bit of a tribute to it. And thats how the first James the Zebra game happened.

-Dim

Oh yeah, I remember playing that game now. I was so mad that you guys beat me to the punch. :D

a hundred memories of swinging from ropes in donkey king country just flew out of nostalgiaville and hit me in the FACE

I dont like how you cant just swing from place to place, frankly.Could you make more buttons? One to shoot, and another to un grapple.

And make the rope a rope, not a stick? I bet you are gonna do that anyways, so nevermind.

Really good though!

That's amazing! I totally came! :3
Seriously though, it's pretty cool. I'd love to see a grappling related game on NG.
Good luck man. I'm saving a place in my favorites for your next project. ^^