class PressurePlate:

    def __init__(self, pos):
        self.pos = pos
        self._trails = []
        print(f"at pos {self.pos.toString()} trails: {self._trails}")
        self._isActive = False


    def addTrail(self, trail):
        print(f"plate at {self.pos.toString()} got trail: {trail}")
        self._trails.append(trail)


    def isActive(self):
        return self._isActive


    def activate(self):
        for trail in self._trails:
            trail.activate()
        self._isActive = True


    def deactivate(self):
        for trail in self._trails:
            trail.deactivate()
        self._isActive = False