1 files changed, 8 insertions, 1 deletions
diff --git a/quadtree.h b/quadtree.h
index 923a49f..a0e5254 100644
--- a/quadtree.h
+++ b/quadtree.h
@@ -1,6 +1,8 @@
 #ifndef QUADTREE_H
 #define QUADTREE_H
 
+#include "vector.h"
+
 class Quadtree {
 	public:
 		struct QuadNode {
@@ -21,6 +23,7 @@ class Quadtree {
 			void draw();
 			void draw_grid();
 			float get_height(float px, float py);
+			Vector3 get_normal(int index);
 		};
 
 		float *heights;
@@ -36,7 +39,11 @@ class Quadtree {
 		void create_nodes(int levels);
 		unsigned int count_nodes();
 		void make_vbo();
-		QuadNode *find(float x, float y, int leve = -1l);
+		QuadNode *find(float x, float y, int level = -1);
+		QuadNode *get_left(QuadNode *node);
+		QuadNode *get_right(QuadNode *node);
+		QuadNode *get_up(QuadNode *node);
+		QuadNode *get_down(QuadNode *node);
 };
 
 #endif