jade.fov.ShadowCaster Class Reference

Inheritance diagram for jade.fov.ShadowCaster:

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)

Additional Inherited Members
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)

Detailed Description

Uses shadow casting to quickly calculate a view field. Shadow casting is more complicated than ray casting, but will only visit each tile once. This gives it a significant advantage over ray casting which revisits cells multiple times when the view field is large. For this reason, shadow casting is much more popular than the simpler ray casting.

Member Function Documentation

Collection<Coordinate> jade.fov.ShadowCaster.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/ShadowCaster.java