work-in-progress texture atlas optimization

data/water.png

src/CMakeLists.txt

src/environment.cpp

src/iirrlichtwrapper.h

src/inventory.cpp

src/inventory.h

src/irrlichtwrapper.cpp

src/irrlichtwrapper.h

src/main.cpp

src/main.h

src/map.cpp

src/map.h

src/mapblock.cpp

src/mapnode.cpp

src/mapnode.h

src/mineral.cpp

src/mineral.h

src/server.cpp

src/texture.h

src/tile.cpp