jade.fov.RayCaster Class Reference

Inheritance diagram for jade.fov.RayCaster:

Public Member Functions
	RayCaster ()
Public Member Functions inherited from jade.fov.ViewField
final Collection< Coordinate >	getViewField (World world, int x, int y, int r)
final Collection< Coordinate >	getViewFieldplayer (World world, int x, int y, int r)
final Collection< Coordinate >	getViewField (World world, Coordinate coord, int r)

Protected Member Functions
Collection< Coordinate >	calcViewField (World world, int x, int y, int r)
Collection< Coordinate >	calcViewFieldplayer (World world, int x, int y, int r)

Detailed Description

Uses a simple raycasting algorithm to compute field of view. This algorithm works by sending digital line rays to each point on the outside of the view radius. This algorithm is very simple, and therefore can often be very fast, especially if the radius is small, or the map is very closed. However, on large and open maps the algorithm results in inefficiencies as tiles close the origin of the view field are rechecked many times over.

Constructor & Destructor Documentation

jade.fov.RayCaster.RayCaster

(

)

Constructs a new

RayCaster 

.

Member Function Documentation

Collection<Coordinate> jade.fov.RayCaster.calcViewField ( World  world, int  x, int  y, int  r  )

protectedvirtual

Calculates the field of view on the given

World 

from the given (x, y) coordinates with the specified radius.

Parameters

world	the World on which field of view is being calculated
x	the x value of the coordinate being queried
y	the y value of the coordinate being queried
r	the radius of the field of view

Returns

the field of view on world from (x, y)

Implements jade.fov.ViewField.

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

• jade/fov/RayCaster.java