directionalMove: This function moves the lobster a fixed distance which will...
In vpourfaraj/lobsterCatch0.1: Models capture processes in American lobster fishery

This function moves the lobster a fixed distance which will be toward the trap (+some randomness) if within a zone of attraction. The closer the lobster is to the trap the smaller the random component of movement.

directionalMove(
  xLobster,
  yLobster,
  dStep,
  distanceToTrap,
  xtrap = 5,
  ytrap = 5,
  radius_of_influence = 15,
  ZoI
)

`xLobster`	location lobster in x direction
`yLobster`	location of a lobster in y direction
`dStep`	is how much a lobster moves in each time step
`distanceToTrap`	how much influence the trap has on movement
`xtrap`	location of the closest trap in the x direction
`ytrap`	location of the trap in y direction
`radius_of_influence`	how large is the attraction zone for the trap at t0
`ZoI`	is trap's zone of influence which gets updated in each timestep