Move update of fog settings to render method
Use temporary room variable
Clear room index array size before filling not after rendering
Remove copy-paste
VC12 (2013) detection
Added missing include
Removed all references to DirectX in CMake files

No more d3d, dinput, dsound...
Removed DirectSound backend
Removed DirectInput backend
Removed Direct3D backend
Removed remains of DirectX in the MenuWidget code
Updated README.md to remove all references to DX
Remove Zdiv from camera
Replace memcpy
Remove use_focal from camera transform
Code style
Code style
Code style
Replace memcpy
Properly restore camera after rendering player in book