Verlet Rope Physics Engine?

Solar2D General Questions/Discussion
#1

Hi

I saw the video http://blog.anscamobile.com/2010/06/new-video-physics-in-five-lines/

and would like to ask whether it has API to do verlet rope physics like cocos2d?

Does it has mention in user guide or video?
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#2

check the sample code for “Bridge” [import]uid: 7427 topic_id: 3261 reply_id: 10554[/import]

#3

I don’t believe corona game edition is capable of vert physics ( as seen in games like Cut The Rope) because that use a different physics engine and corona uses a port of Box2D which requires objects to be defined as individual units and jointed. I’ve asked this question before but got no answer, I assume because it can’t.

Matt [import]uid: 8271 topic_id: 3261 reply_id: 10591[/import]

#4

Hi Matt

So, which physics engine that those physics games (cut the rope or angry bird) use?

[import]uid: 10858 topic_id: 3261 reply_id: 10622[/import]

#5

Hello,

well to achieve effects like Cut The Rope… i’m sure corona can make it.
maybe soon Ansca will create some tutorial for that, or the community will.
we’ll see that. maybe it’s not perfect, but time will make it perfect :smiley: :smiley: :smiley: [import]uid: 7427 topic_id: 3261 reply_id: 10651[/import]

#6

I’m sorry, it looks like I was wrong in that Box2D cannot produce verlet physics. While Box2D itself doesn’t appear to calculate the physics itself, it can be used via the distance joint (known elsewhere as rope joint). The cocos2d engine can produce it and they blogged how - using Box2D - here: http://www.cocos2d-iphone.org/archives/1112

It would be fantastic to see this converted - or an equivalent - for Corona!

I don’t know which physics engine Cut The Rope and Angry Birds use, but I suspect they use Box2D or Chipmunk. I think Angry Birds does nothing particularly special except, of course, turning up the friction values real high and having awesome level design.

So, who here is going to be first to produce a proper Verlet Rope physics demo?

Matt. [import]uid: 8271 topic_id: 3261 reply_id: 10660[/import]

#7

Yes, I would like to see the demo and know how quick corona update the box2d code in its API

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