Also add leaf bounding sphere for optional per-leaf frustum culling.

main.cpp

@@ -255,7 +255,7 @@ int process_faces(const world_t* world, const std::vector<ps1bsp_texture_t>& tex
 		outLeaf.firstLeafFace = leaf->lface_id;
 		outLeaf.numLeafFaces = leaf->lface_num;
 
-		//outLeaf.center = convertWorldPosition(leaf->bound.getCenter());
+		outLeaf.boundingSphere = leaf->bound.toBoundingSphere();
 
 		outLeaves.push_back(outLeaf);
 	}

ps1bsp.h

@@ -143,8 +143,7 @@ typedef struct
 	int type;
 	int vislist;
 
-	// TODO: add bounding box for frustum culling (or do we? could save half the number of bounds checks if we only check nodes)
-	//SVECTOR center;
+	SVECTOR boundingSphere;
 
 	u_short firstLeafFace;
 	u_short numLeafFaces;