Update node functions (add readNode)

src/functions/node.ts

@@ -4,6 +4,7 @@ import { State } from '../utils/state';
 import { calcHValue } from './heuristic';
 import { applyOperation } from './operations';
 import HeuristicValue from '../classes/HeuristicValue';
+import { readState } from './state';
 
 function generateNodeList(node: NodeInfo, goalState: State): NodeInfo[]{
     let childrenNodes: NodeInfo[] = [];
@@ -41,4 +42,15 @@ function generateNode(state: State, op: operations, goalState: State, gValue: nu
     return new NodeInfo(heuristicValue, op, state, previousNode);
 }
 
-export { generateNodeList, generateNode }
+
+function readNode(node: NodeInfo): NodeInfo{
+    readState(node.state);
+    if(node.previousNode){
+        return readNode(node.previousNode);
+    }
+    else{
+        return node;
+    }
+}
+
+export { generateNodeList, generateNode, readNode }