universe.server.database
Class GalaxyGlobular

java.lang.Object
  |
  +--universe.common.database.DBItem
        |
        +--universe.server.database.GalaxyBase
              |
              +--universe.server.database.GalaxyStd
                    |
                    +--universe.server.database.GalaxyGlobular

All Implemented Interfaces:

java.io.Serializable

public class GalaxyGlobular

extends GalaxyStd

implements java.io.Serializable

This class implements instances of randomly generated globular galaxies. This type of galaxy has not yet congealed into an elliptical or spiral galaxy and is thus a loose conglomeration of small clusters of stars. This type of galaxy is good for small to medium scale games. The fact that the stars are collected into little islands usually should present some good strategic "island-hopping" situations.

Author:

Allan Noordvyk (noordvyk@home.com)

See Also:

GalaxyElliptical, GalaxySpiral, Serialized Form

Nested Class Summary

private class

GalaxyGlobular.GlobularCluster This internal class is used to encapsulate a globular cluster inside globular galaxy.

Field Summary

static java.lang.String	DESCRIPTION
private java.util.Vector	myClusters
private float	ourFillRatio

Fields inherited from class universe.server.database.GalaxyStd

ourRandGen

Fields inherited from class universe.server.database.GalaxyBase

Constructor Summary

GalaxyGlobular(float width, float height, float depth, float density)
This is the designated constructor which should be used to create instances of this class.

Method Summary

Coord	newSystemCoord() This method returns a coordinate for a new system.
int	starSystemCount() This method has been overridden to compute the number of stars necessary for the clusters within this galaxy to have the desired average density (i.e.
java.lang.String	structureDescription() This method overrides that of our superclass to return "Globular".

Methods inherited from class universe.server.database.GalaxyStd

containsCoord, generateSystems, getCenter, getDensity, getSpan

Methods inherited from class universe.server.database.GalaxyBase

addSystem, getID, getIndex, getName, getSystems, hasGeneratedSystems, setName

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DESCRIPTION

public static java.lang.String DESCRIPTION

myClusters

private java.util.Vector myClusters

ourFillRatio

private float ourFillRatio

Constructor Detail

GalaxyGlobular

public GalaxyGlobular(float width,
                      float height,
                      float depth,
                      float density)

This is the designated constructor which should be used to create instances of this class.

Parameters:

width - The width of the galaxy (in parsecs)

height - The height of the galaxy (in parsecs)

depth - The depth of the galaxy (in parsecs)

density - The average density (in systems per cubic parsec) of stars within the hull of the galaxy (not its bounding cube).

Method Detail

structureDescription

public java.lang.String structureDescription()

This method overrides that of our superclass to return "Globular".

Overrides:

structureDescription in class GalaxyStd

starSystemCount

public int starSystemCount()

This method has been overridden to compute the number of stars necessary for the clusters within this galaxy to have the desired average density (i.e. the space outside of clusters is ignored).

Overrides:

starSystemCount in class GalaxyStd

Returns:

Number of star systems that will exist in the completed galaxy.

newSystemCoord

public Coord newSystemCoord()

This method returns a coordinate for a new system. It randomly selects one of the clusters previously defined and then finds an unoccupied coordinate somewhere in the vicinity.

Overrides:

newSystemCoord in class GalaxyStd

Returns:

Randomly selected unoccupied coordinate in a randomly selected cluster.

See Also:

#containsCoord()