Constructors |
public BoundedGrid(int rows, int cols)
| Constructs an empty grid with the specified dimensions;
each cell has 4 neighbors.
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public BoundedGrid(boolean includeDiagonals, int rows,
int cols)
| Constructs an empty grid with the specified dimensions;
if includeDiagonals is true , each
cell has 8 neighbrs.
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Accessor methods
dealing with grid dimensions, locations, and
navigation |
public int numRows()
| Returns number of rows in grid.
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public int numCols()
| Returns number of columns in grid.
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public boolean isEmpty(Location loc)
| Returns true if loc is a
valid location in this grid and is empty; otherwise returns
false .
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public boolean isValid(Location loc)
| Returns true if loc is a
valid location in this grid; otherwise returns
false .
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public Direction randomDirection()
| Generates a random direction.
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public Direction getDirection(Location fromLoc, Location
toLoc)
| Returns the direction from one location to another.
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public Location getNeighbor(Location fromLoc, Direction
compassDir)
| Returns the adjacent neighbor of a location
in the specified direction.
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public ArrayList neighborsOf(Location ofLoc)
| Returns a list of the neighbors to the north, south,
east, and west of the given location
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Methods
to add/retrieve/remove objects |
public void add(GridObject obj, Location loc)
| Adds the specified object to the grid at the
specified location.
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public GridObject objectAt(Location loc)
| Returns the object at location loc
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public void remove(Location loc)
| Removes whatever object is at the specified location
in this grid.
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Constructors |
public Fish(Grid env, Location loc)
| Constructs a fish at the specified location
in a given environment.
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public Fish(Grid env, Location loc, Direction dir)
| Constructs a fish at the specified location and
direction in a given environment.
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public Fish(Grid env, Location loc, Direction dir, Color col)
| Constructs a fish of the specified color at the
specified location and direction.
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Accessor
methods |
public int id()
| Returns this fish's ID.
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public Color color()
| Returns this fish's color.
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public boolean isInAGrid()
| Checks whether this object is in a grid.
(inherited from GridObject)
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public Grid grid()
| Returns the grid in which this grid
object exists.
(inherited from GridObject)
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public Location location()
| Returns this fish's location.
(inherited from GridObject)
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public Direction direction()
| Returns this fish's direction.
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public String toString()
| Returns a string representing key information about
this fish.
(redefines behavior in
GridObject )
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Action and
modifier methods |
public void act()
| Acts for one step in the simulation.
(redefines behavior in
GridObject )
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Protected helper
methods used by public methods |
protected void addToGrid(Grid grid, Location loc)
| Adds this object to the specified
grid at the specified location. (used indirectly by
constructor)
(inherited from GridObject)
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protected void move()
| Moves this fish in its environment.
(used by act method)
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protected Location nextLocation()
| Returns the row associated with this location.
(used by move method)
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protected ArrayList emptyNeighbors()
| Finds empty locations adjacent to this fish.
(used indirectly by move method)
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protected void changeLocation(Location newLoc)
| Modifies this fish's location and
notifies the grid. (used by move method)
(inherited from GridObject)
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protected void changeDirection(Direction newDir)
| Modifies this fish's direction.
(used by move method)
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