So. Some themes have objects that seem to be large natural extensions of the landscape. Masks allow maintaining that. Lemme know if it doesn't look good. If it doesn't, can still use for ice/bounce/indestructible. Indestructible bunker object for example.
#this file is included only when system Lua library is not found
file(GLOB lua_src *.c *.h)
if(WIN32)
add_definitions(-DLUA_BUILD_AS_DLL)
add_library(lua SHARED ${lua_src})
set(LUA_LIBRARY lua.dll)
set_target_properties(lua PROPERTIES PREFIX "")
install(TARGETS lua RUNTIME DESTINATION ${target_library_install_dir})
else(WIN32)
add_definitions(-DLUA_USE_LINUX)
add_library(lua STATIC ${lua_src})
set(LUA_LIBRARY lua)
endif(WIN32)