[Library] behaviourtree.lua

[drunken_thor]

Hey everyone I ported my favourite BT lib from javascript to lua and thought you might like to use it as well. Check it out!

https://github.com/tanema/behaviourtree.lua

[adnzzzzZ]

1. Did you implement a context/blackboard that can be accessed by nodes of a tree?
2. Are there parallel nodes that simulate concurrent behavior?

[Fenrir]

Nice, I need a better AI for my guards and I think this library will be really useful!

[drunken_thor]

1. Did you implement a context/blackboard that can be accessed by nodes of a tree?
2. Are there parallel nodes that simulate concurrent behavior?

1. Yes you can either pass in an object to the tree run method or set an object on a created tree please see the documentation https://github.com/tanema/behaviourtree ... avior-tree
2. No, as far as I know concurrency does not really exist in lua, but the tree is structured in a way that the tree stops (will not run another node) until success/fail/running statuses are called. This means that you are still able to develop asynchronous behaviour. However getting nodes to operate in parallel in lua I think might be more trouble than it is worth and too invasive for an overall program for just a simple behaviour library.

[drunken_thor]

1. Did you implement a context/blackboard that can be accessed by nodes of a tree?
2. Are there parallel nodes that simulate concurrent behavior?

Also I had a read through your blog, you had some really good posts about behaviour trees. I see what you mean by parallel nodes in your blog, and it would be really easy to implement by extending the branch node class. Also same with your wait until, or repeat until decorators could all be done by extending the decorator class. But it seems like you already have a pretty good code base for your own behaviour tree.

[s-ol]

1. Did you implement a context/blackboard that can be accessed by nodes of a tree?
2. Are there parallel nodes that simulate concurrent behavior?

1. Yes you can either pass in an object to the tree run method or set an object on a created tree please see the documentation https://github.com/tanema/behaviourtree ... avior-tree
2. No, as far as I know concurrency does not really exist in lua, but the tree is structured in a way that the tree stops (will not run another node) until success/fail/running statuses are called. This means that you are still able to develop asynchronous behaviour. However getting nodes to operate in parallel in lua I think might be more trouble than it is worth and too invasive for an overall program for just a simple behaviour library.

2. I think he means having two running lead-nodes in the same tick, not necessarily running the corresponding lua code concurrently.