2 files changed, 2 insertions, 1 deletions
diff --git a/include/alien.h b/include/alien.h
index 476990b..2f7d596 100644
--- a/include/alien.h
+++ b/include/alien.h
@@ -3,6 +3,7 @@
 class Alien {
 public:
     Alien(int x, int y);
+    const static char MAP_CHAR = 'x';
 private:
     int x;
     int y;
diff --git a/include/game_state.h b/include/game_state.h
index abb2efa..aa49fc8 100644
--- a/include/game_state.h
+++ b/include/game_state.h
@@ -11,7 +11,7 @@
 class GameState
 {
 public:
-    GameState(const std::istream& mapFile){}
+    GameState(std::istream& mapFile);
 private:
     std::vector<Alien> aliens;
     std::vector<EnemyBullet> bullets;