SC2Avoidance Class Reference

Starcraft 2-like avoidance. More...

Detailed Description

Starcraft 2-like avoidance.

The main idea for this script is to

• Reduce the local avoidance priority for agents that have reached their destination once.
• Make agents stop if there is a high density of units around its destination.

'High density' is defined as: Take the circle with the center at the AI's destination and a radius such that the AI's current position is touching its border. Let 'A' be the area of that circle. Further let 'a' be the total area of all individual agents inside that circle. The agent should stop if a > A*0.6 or something like that. I.e if the agents inside the circle cover over 60% of the surface of the circle. The 60% figure can be modified.

Public Attributes
float	densityFraction = 0.5f
bool	returnAfterBeingPushedAway = true

Properties
bool	reachedDestination [get]
	True if the agent has reached its destination. More...

Private Member Functions
float	AgentDensityInCircle (Vector2 position, float radius)
void	Awake ()
void	CheckDestination ()
bool	ShouldStop ()
void	Update ()

Private Attributes
IAstarAI	ai
const float	MaximumCirclePackingDensity = 0.9069f
	See https://en.wikipedia.org/wiki/Circle_packing. More...
Vector3	prevDestination
bool	reachedCurrentDestination
RVOController	rvo
float	timer1 = 0
float	timer2 = 0

Static Private Attributes
static List< IAgent >	agentBuffer = new List<IAgent>()

Member Function Documentation

AgentDensityInCircle()

float AgentDensityInCircle ( Vector2  position, float  radius  )

private

Awake()

void Awake ( )

private

CheckDestination()

void CheckDestination ( )

private

ShouldStop()

bool ShouldStop ( )

private

Update()

void Update ( )

private

Member Data Documentation

agentBuffer

List<IAgent> agentBuffer = new List<IAgent>()

staticprivate

ai

IAstarAI ai

private

densityFraction

float densityFraction = 0.5f

MaximumCirclePackingDensity

const float MaximumCirclePackingDensity = 0.9069f

private

See https://en.wikipedia.org/wiki/Circle_packing.

prevDestination

Vector3 prevDestination

private

reachedCurrentDestination

bool reachedCurrentDestination

private

returnAfterBeingPushedAway

bool returnAfterBeingPushedAway = true

rvo

RVOController rvo

private

timer1

float timer1 = 0

private

timer2

float timer2 = 0

private

Property Documentation

reachedDestination

bool reachedDestination

get

True if the agent has reached its destination.

If the agents destination changes this will return false until a new path has been calculated. Note that changing the destination every frame may cause this value to never return true.

True will be returned if the agent has stopped due to being close enough to the destination. This may be quite some distance away if there are many other agents around the destination.

See also

Pathfinding.IAstarAI.destination

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The documentation for this class was generated from the following file:

• /Users/arong/Unity/a-pathfinding-project/Assets/AstarPathfindingProject/ExampleScenes/Example18_RTS/SC2Avoidance.cs