Final(ish) Debugging Stretch!

A few bugs remain:
-Player and Door not rendered (common factor: animation)
-Slight offset of the entire map by two or so pixels.

Configured to emphasize remaining bugs:
-Screen flashes horribly, emphasized by large map size.
-Impossible to layer objects with respect to their Alpha. Single-texture
rendering means that alpha pixels replace, rather than layer.
Considering changing blend mode to additive.