# -*-coding:Utf-8 -*

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"""Fichier contenant l'ordre Deplacer."""

from secondaires.navigation.equipage.signaux import *

from ..ordre import *

class Deplacer(Ordre):

    """Ordre deplacer.

    Cet ordre est appelé pour demander à un matelot de se déplacer dans
    une certaine direction. Ce déplacement est minimale : le matelot
    ne fait aucune recherche de chemin, il se contente d'aller dans
    la direction indiquée.

    """

    cle = "deplacer"
    def __init__(self, matelot, navire, direction="inconnue"):
        Ordre.__init__(self, matelot, navire, direction)
        self.direction = direction

    def choisir_matelot(self, matelots):
        """Un matelot de substitution ne peut pas être trouvé pour cet ordre."""
        raise OrdreSansSubstitution

    def executer(self):
        """Exécute l'ordre : déplace le matelot."""
        self.matelot.personnage.deplacer_vers(self.direction)
        yield SignalTermine()
