Prevent playing the same card twice with multiblanks

gameloop.py

@@ -4,6 +4,11 @@ from collections import namedtuple
 
 import cardcast_api
 
+# TODO: rando
+# TODO: $0 support
+# TODO: collapse several _ in a row into one
+# TODO: keep track of where cards come from purge from hand when deck remove
+
 class events(enum.Enum):
 	quit, nick_change, status, start, ready, unready, kill, join, leave, players, deck_add, deck_add_random, deck_remove, deck_list, limit, card, cards = range(17)
 
@@ -569,10 +574,21 @@ def game(send, notice, get_event):
 					notice(nick, 'You\'ll get to choose next round')
 					continue
 
+				# Round call card has N parts. Between each of
+				# those parts goes one response card. Therefore
+				# there should be N - 1 response cards
+				if len(choices) != len(round_call_card) - 1:
+					notice(nick, 'Select %i card(s)' % (len(round_call_card) - 1))
+					continue
+
 				selected_cards = []
 				for choice in choices:
 					if 0 <= choice < len(player.hand):
-						selected_cards.append(choice)
+						if choice not in selected_cards:
+							selected_cards.append(choice)
+						else:
+							notice(nick, 'Can\'t play the same card twice')
+							break
 					else:
 						notice(nick, '%i not in your hand' % choice)
 						break
@@ -581,13 +597,6 @@ def game(send, notice, get_event):
 					# Failed to use some choice
 					continue
 
-				# Round call card has N parts. Between each of
-				# those parts goes one response card. Therefore
-				# there should be N - 1 response cards
-				if len(selected_cards) != len(round_call_card) - 1:
-					notice(nick, 'Select %i card(s)' % (len(round_call_card) - 1))
-					continue
-
 				card_choices[player] = selected_cards
 				if player in choosers:
 					choosers.remove(player)