correcting error in algorithm

path_planning_evaluate.py

@@ -148,7 +148,7 @@ class Path_Planning_evaluate(evaluate.Metric):
             if (x, y) in obst_set:
                 return metrics #not feasible, correct or optimal
     
-            if i > 0 and (abs(x-gen_path[i][0]) + abs(y-gen_path[i][1]) > 1):
+            if i > 0 and (abs(x-gen_path[i-1][0]) + abs(y-gen_path[i-1][1]) > 1):
                 return metrics #not feasible, correct or optimal
     
         metrics['feasible'] = True