Node Data Abstraction: Operations

• Selectors
  • node_state_of(Node,S): the state name of N is S.
  • node_parent_of(Node,P): the parent of N is P.
  • node_count_of(Node,C): the count of Node is C.
  • node_gcost_of(Node,G): the path_cost of Node is G.
  • node_hcost_of(Node,H): the hcost of Node is H.
  • node_fcost_of(Node,F): the fcost of Node is F.
• Constructors
  • node_new(N): create a new node
  • node_make(S,P,Node): create a new node with state S and parent P.