add walls to tiles.h/cpp

src/include/terrain.h

@@ -5,7 +5,7 @@
 
 class Terrain {
 	public:
-		enum Passability {P_Blocked, Passable};
+		enum Passability {Blocked, Passable};
 		enum Visibility {Opaque, Corridor, Transparent};
 		Terrain(char, Visibility, Passability); 
 		char getChar();

src/include/tiles.h

@@ -8,4 +8,9 @@ class Floor : public Terrain {
 		Floor();
 };
 
+class Wall : public Terrain {
+	public:
+		Wall();
+};
+
 #endif

src/tiles.cpp

@@ -4,3 +4,7 @@
 Floor::Floor() 
 	: Terrain(' ', Terrain::Transparent, Terrain::Passable)
 {}
+
+Wall::Wall()
+	: Terrain('#', Terrain::Opaque, Terrain::Blocked)
+{}