compilelog

obj/Zombie.o: In function `Zombie::Zombie()':
Zombie.cpp:(.text+0x14): undefined reference to `HostileNPC::HostileNPC()'
obj/Zombie.o:(.rodata._ZTV6Zombie[_ZTV6Zombie]+0x10): undefined reference to `NPC::update()'
obj/Zombie.o:(.rodata._ZTI10HostileNPC[_ZTI10HostileNPC]+0x18): undefined reference to `typeinfo for NPC'
obj/Game.o: In function `Game::keyOperations()':
Game.cpp:(.text+0x463): undefined reference to `Game::keystates'
Game.cpp:(.text+0x496): undefined reference to `Game::keystates'
Game.cpp:(.text+0x4c9): undefined reference to `Game::keystates'
Game.cpp:(.text+0x4fc): undefined reference to `Game::keystates'
obj/Game.o: In function `Game::keyUp(unsigned char, int, int)':
Game.cpp:(.text+0x540): undefined reference to `Game::keystates'
obj/Game.o: In function `Player::getInstance()':
Game.cpp:(.text._ZN6Player11getInstanceEv[_ZN6Player11getInstanceEv]+0x4b): undefined reference to `Player::~Player()'
collect2: error: ld returned 1 exit status
make[1]: *** [bin/game] Error 1