UNO!: prevent joins after a challengeable card

If someone joins after a challengeable W+4, he would be inserted between
the last and first player, and if there is a challenge _his_ cards would
be exposed. So prevent joining in such a situation.

1 files changed, 7 insertions, 0 deletions

diff --git a/data/rbot/plugins/games/uno.rb b/data/rbot/plugins/games/uno.rb
index 6b50d03e..c689c253 100644
--- a/data/rbot/plugins/games/uno.rb
+++ b/data/rbot/plugins/games/uno.rb
@@ -689,6 +689,13 @@ class UnoGame
         return
       end
     end
+    if @last_discard
+      announce _("you can't join now, %{p}, a %{card} was just played, wait until next turn") % {
+        :card => @discard,
+        :p => user
+      }
+      return
+    end
     cards = 7
     if @start_time
       cards = (@players.inject(0) do |s, pl|