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package ch.epfl.maze.physical;
import ch.epfl.maze.util.Direction;
import ch.epfl.maze.util.Vector2D;
/**
* Animal inside a {@code World} that can move depending on the available
* choices it has at its position.
*
* @author Pacien TRAN-GIRARD
*/
abstract public class Animal {
private Vector2D position;
/**
* Constructs an animal with a specified position.
*
* @param position Position of the animal in the labyrinth
*/
public Animal(Vector2D position) {
this.position = position;
}
/**
* Retrieves the next direction of the animal, by selecting one choice among
* the ones available from its position.
*
* @param choices The choices left to the animal at its current position (see
* {@link ch.epfl.maze.physical.World#getChoices(Vector2D)
* World.getChoices(Vector2D)})
* @return The next direction of the animal, chosen in {@code choices}
*/
abstract public Direction move(Direction[] choices);
/**
* Updates the animal position with a direction.
* <p>
* <b>Note</b> : Do not call this function in {@code move(Direction[]
* choices)} !
*
* @param dir Direction that the animal has taken
*/
public final void update(Direction dir) {
this.position = this.position.addDirectionTo(dir);
}
/**
* Sets new position for Animal.
* <p>
* <b>Note</b> : Do not call this function in {@code move(Direction[]
* choices)} !
*
* @param position
*/
public final void setPosition(Vector2D position) {
this.position = position;
}
/**
* Returns position vector of animal.
*
* @return Current position of animal.
*/
public final Vector2D getPosition() {
return this.position;
}
abstract public Animal copy();
}
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