/// <summary>
/// Construct with the provided task and evaluator parameters.
/// </summary>
/// <param name="preyInitMoves">Prey initial moves. The number of moves the prey is allowed to move before the agent can move.</param>
/// <param name="preySpeed">Prey speed; in the interval [0, 1].</param>
/// <param name="sensorRange">The sensor range of the agent.</param>
/// <param name="maxTimesteps">The maximum number of simulation timesteps to run without the agent capturing the prey.</param>
/// <param name="trialsPerEvaluation">The number of prey capture trials to run per evaluation.</param>
public PreyCaptureEvaluator(
int preyInitMoves,
float preySpeed,
float sensorRange,
int maxTimesteps,
int trialsPerEvaluation)
{
// Construct a re-usable instance of the prey capture world.
_world = new PreyCaptureWorld(preyInitMoves, preySpeed, sensorRange, maxTimesteps);
_trialsPerEvaluation = trialsPerEvaluation;
}
public void MoveAgent()
{
var world = new PreyCaptureWorld(4, 1f, 4f, 100);
var agent = new MockPreyCaptureAgent();
// Agent moving north test.
{
world.InitPositions();
Int32Point posBefore = world.AgentPosition;
var outputs = agent.Outputs.Span;
outputs.Clear();
outputs[0] = 1.0;
world.MoveAgent(agent);
Int32Point posDelta = world.AgentPosition - posBefore;
Assert.Equal(new Int32Point(0, 1), posDelta);
}
// Agent moving east test.
{
world.InitPositions();
Int32Point posBefore = world.AgentPosition;
var outputs = agent.Outputs.Span;
outputs.Clear();
outputs[1] = 1.0;
world.MoveAgent(agent);
Int32Point posDelta = world.AgentPosition - posBefore;
Assert.Equal(new Int32Point(1, 0), posDelta);
}
// Agent moving south test.
{
world.InitPositions();
Int32Point posBefore = world.AgentPosition;
var outputs = agent.Outputs.Span;
outputs.Clear();
outputs[2] = 1.0;
world.MoveAgent(agent);
Int32Point posDelta = world.AgentPosition - posBefore;
Assert.Equal(new Int32Point(0, -1), posDelta);
}
// Agent moving west test.
{
world.InitPositions();
Int32Point posBefore = world.AgentPosition;
var outputs = agent.Outputs.Span;
outputs.Clear();
outputs[3] = 1.0;
world.MoveAgent(agent);
Int32Point posDelta = world.AgentPosition - posBefore;
Assert.Equal(new Int32Point(-1, 0), posDelta);
}
}
public PreyCaptureWorldBenchmark()
{
_world = new PreyCaptureWorld(4, 1f, 4f, 1000);
_agent = new MockPreyCaptureAgent();
}
