Split up the graphtool files

src/utility.hpp

@@ -0,0 +1,28 @@
+//
+//  utility.hpp
+//  BoE
+//
+//  Created by Celtic Minstrel on 17-04-14.
+//
+//
+
+#ifndef BoE_UTILITY_HPP
+#define BoE_UTILITY_HPP
+
+#include <string>
+#include <functional>
+#include "location.hpp"
+
+short can_see(location p1,location p2,std::function<short(short,short)> get_obscurity);
+std::string get_str(std::string list, short j);
+
+// Case-insensitive string comparison seems to be semi-standard, but with different names.
+#if defined(__APPLE__)
+#define strnicmp strncasecmp
+#elif defined(_MSC_VER)
+#define strnicmp _strnicmp
+#else
+#error Missing strnicmp / strncasecmp
+#endif
+
+#endif