This past Halloween Google put out a game that used drawn symbols to initiate a function. Using a mouse or drawing table, the game would recognize x, o, <, >,- or |... each enemy had one or more of these symbols above them and had a hierarchy from left to right. As you drew a symbol each enemy with it as their left most would suffer an attack.
Is this possible in actionscript 3? I can't find any resources to help
If it is how complicated can the symbols be?