use a macro for iterating over map entities
destroy the plant above a broken block
show player rotation
players have faces
Merge branch 'above-plants' of https://github.com/dymk/Craft
code formatting
code formatting
fix #43
set dirty flag in make_chunk and update_chunk
refactored function names, reorganized a little
removed unused db function
moved matrix functions into separate file
moved cube functions into separate file
more refactoring
code cleanup; performance improvement