Initial commit with a mostly working engine.

Basic commands are being parsed. I think the only weird part is the
'use' command because it needs to possibly target two things. A tiny
test example is provided in __main__, this will probably be broken out
later.

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

tests/test_trigger_regex.py

@@ -0,0 +1,98 @@
+from agame.trigger import *
+
+
+def test_get_item():
+    cases = [
+        ("get item", "item"),
+        ("take item", "item"),
+        ("grab item", "item"),
+        ("pick up item", "item"),
+        ("pickup item", "item"),
+        ("get the item", "item"),
+        ("take the item", "item"),
+        ("grab the item", "item"),
+        ("pick up the item", "item"),
+        ("pickup the item", "item"),
+        ("get a item", "item"),
+        ("take a item", "item"),
+        ("grab a item", "item"),
+        ("pick up a item", "item"),
+        ("pickup a item", "item"),
+        ("get an item", "item"),
+        ("take an item", "item"),
+        ("grab an item", "item"),
+        ("pick up an item", "item"),
+        ("pickup an item", "item"),
+        ("get    item", "item"),
+        ("take item", "item"),
+        ("grab          item", "item"),
+        ("pick   up       item", "item"),
+        ("pickup                     item", "item"),
+        ("get     the item", "item"),
+        ("take the       item", "item"),
+        ("grab    the            item", "item"),
+        ("pick  up  the  item", "item"),
+        ("pickup    the   item", "item"),
+        ("get     a item", "item"),
+        ("take a       item", "item"),
+        ("grab    a  item", "item"),
+        ("pick  up  a  item", "item"),
+        ("pickup    a   item", "item"),
+        ("get     an item", "item"),
+        ("take an       item", "item"),
+        ("grab    an             item", "item"),
+        ("pick  up  an  item", "item"),
+        ("pickup    an   item", "item"),
+    ]
+
+    pat = GetTrigger.pattern()
+    for (line, expected) in cases:
+        line = line.strip()
+        match = pat.fullmatch(line)
+        assert match is not None
+        assert match["item"] == expected
+
+
+def test_use_item():
+    cases = [
+        ("use item", "item"),
+        ("use the item", "item"),
+        ("use a item", "item"),
+        ("use an item", "item"),
+        ("use    item", "item"),
+        ("use     the item", "item"),
+        ("use     a item", "item"),
+        ("use     an item", "item"),
+        ("use     an item", "item"),
+    ]
+
+    pat = UseTrigger.pattern()
+    for (line, expected) in cases:
+        line = line.strip()
+        match = pat.fullmatch(line)
+        assert match is not None
+        assert match["item"] == expected
+
+
+def test_use_item_with():
+    cases = [
+        ("use item with other item", "item", "other item"),
+        ("use the item with an other item", "item", "other item"),
+        ("use a item with a other item", "item", "other item"),
+        ("use an item with the other item", "item", "other item"),
+        ("use   item    with  other item", "item", "other item"),
+        ("use  the  item  with  an  other item", "item", "other item"),
+        ("use   a   item   with   a   other item", "item", "other item"),
+        ("use   an   item   with   the   other item", "item", "other item"),
+    ]
+
+    pat = UseTrigger.pattern()
+    for (line, item, other_item) in cases:
+        match = pat.fullmatch(line)
+        assert match is not None
+        assert match["item"] == item
+        assert match["target"] == other_item
+
+
+# TODO : put
+# TODO : look