File list (Check if you may need any files):
RF Online Sourcecode\R3Engine\R3Engine\1stclass\animation.cpp
....................\........\........\........\animation.h
....................\........\........\........\bsp.cpp
....................\........\........\........\collision.cpp
....................\........\........\........\collision.h
....................\........\........\........\core.cpp
....................\........\........\........\core.h
....................\........\........\........\cpathfinder.cpp
....................\........\........\........\cpathfinder.h
....................\........\........\........\entity.cpp
....................\........\........\........\entity.h
....................\........\........\........\multilayer.cpp
....................\........\........\........\multilayer.h
....................\........\........\........\procedural.cpp
....................\........\........\........\procedural.h
....................\........\........\........\r3alpha.cpp
....................\........\........\........\r3alpha.h
....................\........\........\........\r3bsp.h
....................\........\........\........\r3d3d8.cpp
....................\........\........\........\r3d3d8.h
....................\........\........\........\r3d3dtex.cpp
....................\........\........\........\r3d3dtex.h
....................\........\........\........\r3lightmap.cpp
....................\........\........\........\r3lightmap.h
....................\........\........\........\r3material.cpp
....................\........\........\........\r3material.h
....................\........\........\........\r3particle.cpp
....................\........\........\........\r3particle.h
....................\........\........\........\r3render.cpp
....................\........\........\........\r3render.h
....................\........\........\........\r3vertexbuffer.cpp
....................\........\........\........\r3vertexbuffer.h
....................\........\........\........\r3vertexshader.cpp
....................\........\........\........\r3vertexshader.h
....................\........\........\........\renderentity.cpp
....................\........\........\........\renderflag.cpp
....................\........\........\........\renderflag.h
....................\........\........\........\renderparticle.cpp
....................\........\........\........\renderparticle.h
....................\........\........\........\skybox.cpp
....................\........\........\........\skybox.h
....................\........\........\........\soundentity.cpp
....................\........\........\........\soundentity.h
....................\........\........\........\specialparticle.cpp
....................\........\........\........\specialparticle.h
....................\........\........\........\toolcollision.cpp
....................\........\........\........\toolcollision.h
....................\........\........\........\vssver.scc
....................\........\........\2ndclass\2dsprite.cpp
....................\........\........\........\2dsprite.h
....................\........\........\........\anicamera.cpp
....................\........\........\........\anicamera.h
....................\........\........\........\console.cpp
....................\........\........\........\console.h
....................\........\........\........\extdummy.cpp
....................\........\........\........\extdummy.h
....................\........\........\........\level.cpp
....................\........\........\........\level.h
....................\........\........\........\movecamera.cpp
....................\........\........\........\movecamera.h
....................\........\........\........\r3d3dapp.cpp
....................\........\........\........\r3d3dapp.h
....................\........\........\........\r3d3dwrapper.cpp
....................\........\........\........\r3d3dwrapper.h
....................\........\........\........\r3enginekernel.cpp
....................\........\........\........\r3enginekernel.h
....................\........\........\.....