aud.example.grid.Grid.Cell Class Reference

Cell in a Grid. More...

Public Member Functions
boolean	is_free ()
	Can we enter this cell? More...
boolean	is_tunnel ()
	letters a-z denote entries to tunnels: e.g., all 'a' are connected More...

Public Attributes
char	value = '\000'
	the value that is displayed More...
int	color = Terminal.WHITE
	indexed color, see Terminal More...
double	d = Double.POSITIVE_INFINITY
	distance to source More...
double	f = Double.POSITIVE_INFINITY
	priority used by A* (distance + estimated distance to destination More...
int	p = -1
	index of parent cell More...

Detailed Description

Cell in a Grid.

Cells have a char value that is displayed. In addition, cells with the following values can be accessed: white space, letters, and digits. Any other values will be interpreted as "obstacles".

The color attribute can be used for visualization and as a flag (e.g., cell was processed). Note: Whether color can be displayed depends on Terminal.

The remaining attributes are used during traversal (see lecture).

Definition at line 71 of file Grid.java.

Member Function Documentation

is_free()

boolean aud.example.grid.Grid.Cell.is_free

(

)

Can we enter this cell?

Definition at line 75 of file Grid.java.

                             {
      return value=='\000' || value=='.' || value=='*' ||
        Character.isWhitespace(value) ||
        Character.isLetterOrDigit(value);
    }

References aud.example.grid.Grid.Cell.value.

is_tunnel()

boolean aud.example.grid.Grid.Cell.is_tunnel

(

)

letters a-z denote entries to tunnels: e.g., all 'a' are connected

Definition at line 81 of file Grid.java.

{ return 'a'<=value && value<='z'; }

References aud.example.grid.Grid.Cell.value.

Referenced by aud.example.grid.Grid.create_tunnels_for().

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Member Data Documentation

color

int aud.example.grid.Grid.Cell.color = Terminal.WHITE

indexed color, see Terminal

Definition at line 84 of file Grid.java.

d

double aud.example.grid.Grid.Cell.d = Double.POSITIVE_INFINITY

distance to source

Definition at line 86 of file Grid.java.

f

double aud.example.grid.Grid.Cell.f = Double.POSITIVE_INFINITY

priority used by A* (distance + estimated distance to destination

Definition at line 88 of file Grid.java.

p

int aud.example.grid.Grid.Cell.p = -1

index of parent cell

Definition at line 90 of file Grid.java.

value

char aud.example.grid.Grid.Cell.value = '\000'

the value that is displayed

Definition at line 73 of file Grid.java.

Referenced by aud.example.grid.Grid.Cell.is_free(), and aud.example.grid.Grid.Cell.is_tunnel().

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The documentation for this class was generated from the following file:

• Grid.java