changed node naming system to post-creation

src/graph/graph.py

@@ -9,8 +9,8 @@ class Graph:
         self.edges: list[Edge] = []
         self.nodes: list[Node] = []
 
-    def add_node(self, x: int, z: int, name: str) -> None:
-        self.nodes.append(Node(x, z, name, len(self.nodes)))
+    def add_node(self, x: int, z: int, name: str = "") -> None:
+        self.nodes.append(Node(x, z, len(self.nodes), name))
 
     def add_edge(self, start_index: int, end_index: int, length: float) -> None:
         self.edges.append(Edge(start_index, end_index, length, len(self.edges)))

src/graph/node.py

@@ -1,6 +1,9 @@
 class Node:
-    def __init__(self, x: int, z: int, name: str, index: int):
+    def __init__(self, x: int, z: int, index: int, name: str = ""):
         self.x: int = x
         self.z: int = z
         self.index: int = index
-        self.name: str = name
+        self.name: str = name
+    
+    def rename_node(self, name: str):
+        self.name = name