public AiControllerInputBuilder LookForFood()
{
var vectorToFood = Vector2.Normalize(controllerInputs.FoodPosition - controllerInputs.SnakePositions[0]);
var distance = Vector2.Distance(controllerInputs.FoodPosition, controllerInputs.SnakePositions[0]);
inputs.Add(vectorToFood.X);
inputs.Add(vectorToFood.Y);
inputs.Add(ActivationFunctions.ExpMinusModX(distance));
return(this);
}
private AiControllerInputBuilder LookInDirection(Direction direction)
{
var movement = direction.ToTranslation();
var currentIndex = controllerInputs.SnakePositions[0] + movement;
var snakeBodyIndices = controllerInputs.SnakePositions.Skip(1);
var inBounds = InBoundsConditions[direction];
var distance = 0f;
while (inBounds(currentIndex, controllerInputs.GridDescription))
{
if (snakeBodyIndices.Contains(currentIndex))
{
break;
}
currentIndex += movement;
distance++;
}
inputs.Add(ActivationFunctions.ExpMinusModX(distance));
return(this);
}