BehaviorTreeForGroups

Behavior Tree For Groups is an addon for Godot Engine that enables you to create swarms, flocks and multiagent systems using a single behavior tree.

You can easily design collective behaviors without any code by adding groups to your nodes.

Several examples, in 2D or 3D, are available: test them to understand how they work and what can be done

Simple 2D tutorial

First, create a new 2D scene

save it as main

Second, create a new Agent2D

Click the + button in your scene tree and Select NewAgent2D (you can also create your own RigidBody2D)
Open the Agent2D.tscn automatically generated, and select the RigidBody at the root of this scene
In the inspector, go to the Node Tab then go to Group and add a new group called test group
Save the Agent2D scene
Go back to your main scene

Third, create a simple behavior tree

Click the plus button in your main scene, then select the node BehavTreeForGroups
Then, add a new child node called Behavior
In the inspector of the newly created node Behavior, in the Group property, write test_group. That means all the nodes having the Group test_group will be treated.
Then, as child of the node Behavior, add a new node called TranslateRandom

Finally, put about 10 Agent2D in your main scene

Drag & drop the file Agent2D inside your main scene
Execute your program: all the agents having the group test_group will move at random

Many other nodes exists to create many different behaviors

Simple 3D tutorial

Very simple : replace 2D by 3D in the previous example!

And do not forget to put a camera and a light then execute your program

pascal-ballet/BehaviorTreeForGroups