Setup:

- Empty scene with a camera and directional light
- One game object, placed at world space origin
	- Should have some geometry (so it's visible)
	- This will be the parent of the AgentController script...

- One prefab:
	- Geometry so it's visible
	- Parent of the AgentBehaviour Script
	- Sphere collider so physics checks work
	- Added to a custom physics layer


Agent Controller Script:
------------------------

- Should expose variables:
	- Number of agents to spawn at startup
	- Spawn Radius
	- Velocity agents should move at
	- Speed agents can rotate at
	- Distance agents should try to maintain from each other
	- LayerMask your Agent prefab is in (for the physics test)
	- Holder for the prefab reference

Start()
- Spawn fSpawnCount agents

Spawn()
- Instantiate the agent prefab
    - The position of which should be within "spawn radius"
- Give it _small_ amount of random rotation for variation
- Find the prefab's AgentBehaviour script:
	- Set its reference to AgentController to <this>
	- ie: make sure the AgentBehaviour script knows where AgentController is!



Agent Behaviour Script
----------------------

- Should expose variables:
	- AgentController


Vector3 GetSeparationVector(Transform target)
{
		var diff = transform.position - target.transform.position;
		var diffLen = diff.magnitude;
		var scaler = Mathf.Clamp01(1.0f - diffLen / controller.neighborDist);
		return diff * (scaler / diffLen);
}

Start()
- Empty


Update()
- Store Current Position and Current rotation
- Velocity = Controller.Velocity
- Create 3 vectors:
	- separation = vector3.zero
	- alignment = controller's forward vector
	- cohesion = controller's Position
- Look for agents:
	- Physics.OverlapSphere(currentPosition, Neighbour Distance, Physics Layer to Search);
	- For each agent:
		- separation += GetSeparationVector(agent.transform)
		- alignment += agent's forward vector
		- cohesion += agent's position
- float average = 1.0f / number of agents found by the Physics.OverlapSphere check previously
- alignment *= avgerage
- cohesion *= average
- cohesion = (cohesion - currentPosition).normalized;
- new direction = separation + alignment + cohesion;
- new rotation = Quaternion.FromToRotation(Vector3.forward, direction.normalized);
- if (rotation != currentRotation) {
  	transform.rotation = Quaternion.Slerp(rotation, currentRotation, Mathf.Exp(-4.0f * Time.deltaTime));
}
- new Agent position = currentPosition + transform forward * (Velocity * Time.deltaTime);



Hidden Coins
------------

- Add buttons to spawn new sets of agents
- Move the gameobject the controller is on, so as to guide the agents around an area
- Make the camera into an agent-flock-follow cam, targetting the centre of the flock
- Post effects, blur, etc.