Update fmt lib, add recast, wip on recast pathfinder interface (broken atm)

zone/pathfinder_nav_mesh.h

@@ -1,14 +1,22 @@
 #pragma once
 
 #include "pathfinder_interface.h"
+#include <string>
 
 class PathfinderNavmesh : public IPathfinder
 {
 public:
-	PathfinderNavmesh() { }
-	virtual ~PathfinderNavmesh() { }
+	PathfinderNavmesh(const std::string &path);
+	virtual ~PathfinderNavmesh();
 
 	virtual IPath FindRoute(const glm::vec3 &start, const glm::vec3 &end);
 	virtual glm::vec3 GetRandomLocation();
 	virtual void DebugCommand(Client *c, const Seperator *sep);
+
+private:
+	void Load(const std::string &path);
+	void ShowPath(Client *c, const glm::vec3 &start, const glm::vec3 &end);
+
+	struct Implementation;
+	std::unique_ptr<Implementation> m_impl;
 };