Interesting tutorial. I learned a lot about basic game engine design for a rogue like.

But as for "class", i stand by my opinion in Thoughts on new 'class' OO in upcoming perl. It's far from ready, it's missing a ton of features. And all that "inheritance is bad" talk is completely against my own experience.

(Now, if anyone wants to kill a "feature" in perl completely, make it implicit variables. For that, i'd be happy to hand you the knive and help burry the body.)