feat: Added nav and start of npc stuff

code/game/nav.h

@@ -0,0 +1,40 @@
+#if !defined(LD_GAME_NAV_H_)
+#define LD_GAME_NAV_H_
+
+#include "../core/types.h"
+#include "../core/macros.h"
+
+#define NAV_MAX_PATH 1024
+#define NAV_MAX_CONNECTIONS 8
+#define NAV_MAX_NODES 4096
+
+typedef struct NavNode NavNode;
+
+typedef struct NavConnection NavConnection;
+struct NavConnection{
+  F32 Cost;
+  U32 NodeIndex;
+};
+
+struct NavNode {
+  V2f pos;
+  U8 connectionCount;
+  NavConnection connections[NAV_MAX_CONNECTIONS];
+};
+
+typedef struct NavPath NavPath;
+struct NavPath {
+  U32 nodeCount;
+  U32 indexes[NAV_MAX_PATH];
+};
+
+typedef struct NavMesh NavMesh;
+struct NavMesh{
+  U32 nodeCount;
+  NavNode nodes[NAV_MAX_NODES];
+};
+
+
+function NavPath Nav_Path(NavMesh mesh, U32 start, U32 end);
+
+#endif