3D Unity Swarm Simulation

A swarm simulation algorithm for Unity Engine. Based on Craig Reynolds boids-Algorithm.

Steering Patterns

There is no shared memory between multiple agents. The swarm movement is created through aggregation of the individual behaviour. The individual agents act based on a few movement patterns defined by Craig Reynolds in Steering Behaviors For Autonomous Characters.

This implementation supports the following steering patterns:

• Seek
• Arrival
• Wander
• Cohesion
• Separation
• Alignment
• Obstacle Avoidance (using a different concept)
• Hide
• Flee

Intergration in existing projects

To integrate this into your project simply place the agent-script and the behaviour-script somewhere inside your project (in the same folder).

If you wish for some demonstration you can put the whole intergrate the whole asset-folder) into your project assets. Inside you will find a sample-scene for demonstration purposes and some textures. If you need an example for possible swarm agents, take a look at the prefab-folder.

Usage

Any gameObject can be turned into a swarm agent. The only requirement is that the following components are attached to the parent-object:

• the agent-script
• a Rigidbody
• one or multiple Collider's of any size or form with isTrigger = true (used to detect nearby enemies)

You can customize the behaviour of any individual agent by adjusting values in the inpector.

The Ratio-Tab lets you configure how the different steering behaviours are mixed to create the agents movement:

Example: for agents to only use the "Wander" movement pattern, set wanderFactor to 1 and all other factors to 0.

For fine-tuning the different movement patterns can also be customized:

Example: use Arrival Slowing Distance to customize the distance to the target, at which the agent starts slowing down.

Demo-Video

Click here to watch a demo video.

Used Packages and Sources

• Stylised Submarine (only character and animations were used)
• Sardine (only character and animations were used)