public MarkovState getResult(StochasticAction action)
{
double value = rand.NextDouble();
double current = 0.0;
ActionResult result = null;
int i = 0;
List <ActionResult> results = action.getPossibleResults();
while (i < results.Count() && current < value)
{
result = results[i];
current += result.probability;
i++;
}
return(result.state);
}
internal void addAction(StochasticAction action)
{
actions.Add(action);
}
private StochasticAction createAction(Direction direction, int x, int y)
{
StochasticAction action = null;
ActionResult up = new ActionResult(get(x, y - 1));
ActionResult down = new ActionResult(get(x, y + 1));
ActionResult left = new ActionResult(get(x - 1, y));
ActionResult right = new ActionResult(get(x + 1, y));
switch (direction)
{
case Direction.down:
action = new GridAction("v");
// go down
down.probability = .8;
action.addPossible(down);
// go left
left.probability = .1;
action.addPossible(left);
// go right
right.probability = .1;
action.addPossible(right);
break;
case Direction.left:
action = new GridAction("<");
// go left
left.probability = .8;
action.addPossible(left);
// go up
up.probability = .1;
action.addPossible(up);
// go down
down.probability = .1;
action.addPossible(down);
break;
case Direction.right:
action = new GridAction(">");
// go right
right.probability = .8;
action.addPossible(right);
// go up
up.probability = .1;
action.addPossible(up);
// go down
down.probability = .1;
action.addPossible(down);
break;
case Direction.up:
action = new GridAction("^");
// go down
up.probability = .8;
action.addPossible(up);
// go left
left.probability = .1;
action.addPossible(left);
// go right
right.probability = .1;
action.addPossible(right);
break;
default:
break;
}
return(action);
}
