SET_SOURCE_FILES(PONG_SRC_FILES BUILD_UNIT PongBuildUnit.cc Pong.cc PongAI.cc PongBall.cc PongBat.cc PongBot.cc PongCenterpoint.cc PongScore.cc END_BUILD_UNIT ) ORXONOX_ADD_LIBRARY(pong PLUGIN FIND_HEADER_FILES LINK_LIBRARIES orxonox overlays SOURCE_FILES ${PONG_SRC_FILES} )