i want design algorithm using and hill climbing alghorithms problem we have 2 agents helix 4

i want to design an algorithm using A* and Hill climbing alghorithms: problem: we have 2 agents in helix 4*4, both mobile and first agent is following second agent. Authorized movements for agents is right, left, up and down. agents can walk 1that towards must determined by 2 mentioned strategies. Both agents have to be moved at any step. For hill climbing, consider a Heuristic function and once regardless if this function implementation