Add pathfinding interfaces, still heavily wip

zone/pathfinder_interface.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "map.h"
+#include <list>
+
+class IPathfinder
+{
+public:
+	typedef std::list<glm::vec3> IPath;
+
+	IPathfinder() { }
+	virtual ~IPathfinder() { }
+
+	virtual IPath FindRoute(const glm::vec3 &start, const glm::vec3 &end) = 0;
+	virtual glm::vec3 GetRandomLocation() = 0;
+
+	static IPathfinder *Load(const std::string &zone);
+};