C# Class SharpNeat.Domains.PreyCapture.PreyCaptureWorld

The prey capture task's grid world. Encapsulates agent's sensor and motor hardware and the prey's simple stochastic movement.

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Public Methods

Method	Description
InitPositions ( ) : void	Initialise agent and prey positions. The prey is positioned randomly with at least 4 empty squares between it and a wall (in all directions). The agent is positioned randomly but such that the prey is within sensor range (distance 2 or less).
IsPreyCaptured ( ) : bool	Gets a boolean that indicates if the prey has been captured.
MoveAgent ( IBlackBox agent ) : void	Allow the agent to move one square based on its decision. Note that the agent can choose to not move.
MovePrey ( ) : void	Move the prey. The prey moves by a simple set of stochastic rules that make it more likely to move away from the agent, and more so when it is close.
PreyCaptureWorld ( int gridSize, int preyInitMoves, double preySpeed, double sensorRange, int maxTimesteps ) : System	Constructs with the provided world parameter arguments.
RunTrial ( IBlackBox agent ) : bool	Runs one trial of the provided agent in the world. Returns true if the agent captures the prey within the maximum number of timesteps allowed.
SetAgentInputsAndActivate ( IBlackBox agent ) : void	Determine the agent's position in the world relative to the prey and walls, and set its sensor inputs accordingly.

Private Methods

Method	Description
CalcAngleDelta ( double a, double b ) : double	Calculates minimum angle between two vectors (specified by angle only).
MovePrey_T ( double distance ) : double

Method Details

InitPositions() public method

Initialise agent and prey positions. The prey is positioned randomly with at least 4 empty squares between it and a wall (in all directions). The agent is positioned randomly but such that the prey is within sensor range (distance 2 or less).

public InitPositions ( ) : void
return	void

IsPreyCaptured() public method

Gets a boolean that indicates if the prey has been captured.

public IsPreyCaptured ( ) : bool
return	bool

MoveAgent() public method

Allow the agent to move one square based on its decision. Note that the agent can choose to not move.

public MoveAgent ( IBlackBox agent ) : void
agent	IBlackBox
return	void

MovePrey() public method

Move the prey. The prey moves by a simple set of stochastic rules that make it more likely to move away from the agent, and more so when it is close.

public MovePrey ( ) : void
return	void

PreyCaptureWorld() public method

Constructs with the provided world parameter arguments.

public PreyCaptureWorld ( int gridSize, int preyInitMoves, double preySpeed, double sensorRange, int maxTimesteps ) : System
gridSize	int
preyInitMoves	int
preySpeed	double
sensorRange	double
maxTimesteps	int
return	System

RunTrial() public method

Runs one trial of the provided agent in the world. Returns true if the agent captures the prey within the maximum number of timesteps allowed.

public RunTrial ( IBlackBox agent ) : bool
agent	IBlackBox
return	bool

SetAgentInputsAndActivate() public method

Determine the agent's position in the world relative to the prey and walls, and set its sensor inputs accordingly.

public SetAgentInputsAndActivate ( IBlackBox agent ) : void
agent	IBlackBox
return	void