1 files changed, 29 insertions, 0 deletions
diff --git a/server/hints.py b/server/hints.py
new file mode 100644
index 0000000..c70c596
--- /dev/null
+++ b/server/hints.py
@@ -0,0 +1,29 @@
+# coding=utf-8
+
+import server.user_session
+
+# Hint.instantiate takes a hint object (dictionary) to be sent to the client
+# and sets additional fields based on previously sent hints.
+
+# Simple hint: don't do anything.
+class Hint(object):
+    def __init__(self, name):
+        self.name = name
+
+    def instantiate(self, hint, prev_hints):
+        pass
+
+# Hint sequence: each time this hint is sent, increase the message index until
+# the last message is reached, then repeat that.
+class HintSequence(Hint):
+    def __init__(self, name, length):
+        self.name = name
+        self.length = length
+
+    def instantiate(self, hint, prev_hints):
+        index = 0
+        for prev_hint in prev_hints:
+            if prev_hint['id'] == self.name:
+                index = max(index, prev_hint['indices'][0]+1)
+        index = min(index, self.length-1)
+        hint['indices'] = [index]