Implement playing minions in a specific position

Card.play() now has a new, optional `index` argument. If not provided,
the minion will be appended to the end of the field (on the right).

fireplace/actions.py

@@ -235,7 +235,7 @@ def _broadcast(self, entity, source, at, *args):
	def get_args(self, source):
		return (source, ) + super().get_args(source)

	def do(self, source, player, card, target):
	def do(self, source, player, card, target, index):
		source_card = card
		play_action = card.action

@@ -245,6 +245,7 @@ def do(self, source, player, card, target):
			card = card.parent_card

		card.target = target
		card._summon_index = index
		source_card.target = target
		player.game.no_aura_refresh = True
		player.game._play(card)

fireplace/card.py

@@ -297,14 +297,14 @@ def is_playable(self):
				return False
		return True

	def play(self, target=None, choose=None):
	def play(self, target=None, index=None, choose=None):
		"""
		Queue a Play action on the card.
		"""
		if choose:
			# This is a helper so we can do keeper.play(choose=id)
			# instead of having to mess with keeper.choose_cards.filter(...)
			return self.choose_cards.filter(id=choose)[0].play(target=target)
			return self.choose_cards.filter(id=choose)[0].play(target=target, index=index)
		if self.has_target():
			if not target:
				raise InvalidAction("%r requires a target to play." % (self))
@@ -314,7 +314,7 @@ def play(self, target=None, choose=None):
			raise InvalidAction("Do not play %r! Play one of its Choose Cards instead" % (self))
		if not self.is_playable():
			raise InvalidAction("%r isn't playable." % (self))
		self.game.queue_actions(self.controller, [Play(self, target)])
		self.game.queue_actions(self.controller, [Play(self, target, index)])
		return self

	def shuffle_into_deck(self):
@@ -547,6 +547,7 @@ def __init__(self, data):
		self.enrage = False
		self.poisonous = False
		self.silenced = False
		self._summon_index = None
		super().__init__(data)

	@property
@@ -603,7 +604,10 @@ def update_scripts(self):

	def _set_zone(self, value):
		if value == Zone.PLAY:
			self.controller.field.append(self)
			if self._summon_index is not None:
				self.controller.field.insert(self._summon_index, self)
			else:
				self.controller.field.append(self)

		if self.zone == Zone.PLAY:
			self.log("%r is removed from the field", self)