array of positions

Questions & Answers
1

How would you go about creating an array of stored positions that a player can move to?

Also make it so the player cannot move to a position that has a wall or an enemy on it?

2

Usually you create empty game objects (waypoints) and place them at the desired positions in the Scene view. You can get all of them in a GameObject array with FindGameObjectsWithTag at Start, or create a public Transform array in the player script and drag the waypoints to it in the Inspector.

To check if something is blocking some waypoint, use a LineCast - if it returns true, something is blocking the way:

  if (Physics.LineCast(transform.position, waypoint.position)){
    // something is blocking the way!
  }

Make sure each waypoint is at approximately 1 unit above the ground - if too high or below the ground, LineCast may return wrong results.