org.jscience.computing.ai.artificiallife
Class FlockingAgent

java.lang.Object
  org.jscience.computing.ai.artificiallife.FlockingAgent

public class FlockingAgent
extends java.lang.Object

Implements an agent that flocks with other similar agents. This code is based on Mike Miller's Java code conversion for The Computational Beauty of Nature by Gary William Flake. The code has been converted to the Generation5 SDK style and system (using Visualizable etc.).

See Also:

FlockingAgent

Field Summary

protected static double	avoidR DOCUMENT ME!
protected static double	avoidW DOCUMENT ME!
protected static double	centroidR DOCUMENT ME!
protected static double	centroidW DOCUMENT ME!
protected static int	cols The height of the flocking agent's world.
protected static double	copyR DOCUMENT ME!
protected static double	copyW DOCUMENT ME!
protected static double	ddt DOCUMENT ME!
protected static double	dt DOCUMENT ME!
protected static double	minV DOCUMENT ME!
protected static FlockingAgent[]	myFlock The flock this agent is in.
protected double	nvx The x-velocity to be used in the next frame.
protected double	nvy The y-velocity to be used in the next frame.
protected static double	nx DOCUMENT ME!
protected static double	ny DOCUMENT ME!
protected double	positionX The x-position of this agent.
protected double	positionY The positionY-position of this agent.
protected static double	randW DOCUMENT ME!
protected static java.util.Random	rnd The random seed used to generate positional data.
protected static int	rows The width of the flocking agent's world.
protected static double	vAvoidA DOCUMENT ME!
protected static double	vAvoidR DOCUMENT ME!
protected static double	vAvoidW DOCUMENT ME!
protected static double	viewA The viewing angle of the agent.
protected double	vx The x-velocity of this agent.
protected double	vy The y-velocity of this agent.

Constructor Summary

FlockingAgent()
Creates a new instance of FlockingAgent.

Method Summary

void	computeNewHeading(int self) DOCUMENT ME!
protected static double	dist(double x1, double y1, double x2, double y2) DOCUMENT ME!
protected static double	dot(double x1, double y1, double x2, double y2) DOCUMENT ME!
static void	initMisc(java.util.Random r, int rr, int cc, double va, double vaa, double mv) DOCUMENT ME!
static void	initRadii(double cr, double ccr, double ar, double vr) DOCUMENT ME!
static void	initTime(double t, double tt) DOCUMENT ME!
static void	initWeights(double cw, double ccw, double aw, double vw, double rw) DOCUMENT ME!
protected static double	len(double x, double y) DOCUMENT ME!
protected static void	normalize(double x, double y) DOCUMENT ME!
void	render(java.awt.Graphics graphics, int sx, int sy) DOCUMENT ME!
static void	setFlock(FlockingAgent[] flock) DOCUMENT ME!
void	update() DOCUMENT ME!

Methods inherited from class java.lang.Object

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

Field Detail

rnd

protected static java.util.Random rnd

The random seed used to generate positional data.

rows

protected static int rows

The width of the flocking agent's world.

cols

protected static int cols

The height of the flocking agent's world.

viewA

protected static double viewA

The viewing angle of the agent.

vAvoidA

protected static double vAvoidA

DOCUMENT ME!

minV

protected static double minV

DOCUMENT ME!

copyR

protected static double copyR

DOCUMENT ME!

centroidR

protected static double centroidR

DOCUMENT ME!

avoidR

protected static double avoidR

DOCUMENT ME!

vAvoidR

protected static double vAvoidR

DOCUMENT ME!

copyW

protected static double copyW

DOCUMENT ME!

centroidW

protected static double centroidW

DOCUMENT ME!

avoidW

protected static double avoidW

DOCUMENT ME!

vAvoidW

protected static double vAvoidW

DOCUMENT ME!

randW

protected static double randW

DOCUMENT ME!

dt

protected static double dt

DOCUMENT ME!

ddt

protected static double ddt

DOCUMENT ME!

myFlock

protected static FlockingAgent[] myFlock

The flock this agent is in.

nx

protected static double nx

DOCUMENT ME!

ny

protected static double ny

DOCUMENT ME!

positionX

protected double positionX

The x-position of this agent.

positionY

protected double positionY

The positionY-position of this agent.

vx

protected double vx

The x-velocity of this agent.

vy

protected double vy

The y-velocity of this agent.

nvx

protected double nvx

The x-velocity to be used in the next frame. Remember that the flocking agents are updated "simultaneously", so they should all have their new values computed using computeNewHeading, then all have them updated using update.

nvy

protected double nvy

The y-velocity to be used in the next frame. Remember that the flocking agents are updated "simultaneously", so they should all have their new values computed using computeNewHeading, then all have them updated using update.

Constructor Detail

FlockingAgent

public FlockingAgent()

Creates a new instance of FlockingAgent. Random values are automatically assigned to the positional and velocity variables.

Method Detail

initMisc

public static void initMisc(java.util.Random r,
                            int rr,
                            int cc,
                            double va,
                            double vaa,
                            double mv)

DOCUMENT ME!

Parameters:

r - DOCUMENT ME!

rr - DOCUMENT ME!

cc - DOCUMENT ME!

va - DOCUMENT ME!

vaa - DOCUMENT ME!

mv - DOCUMENT ME!

initRadii

public static void initRadii(double cr,
                             double ccr,
                             double ar,
                             double vr)

DOCUMENT ME!

Parameters:

cr - DOCUMENT ME!

ccr - DOCUMENT ME!

ar - DOCUMENT ME!

vr - DOCUMENT ME!

initWeights

public static void initWeights(double cw,
                               double ccw,
                               double aw,
                               double vw,
                               double rw)

DOCUMENT ME!

Parameters:

cw - DOCUMENT ME!

ccw - DOCUMENT ME!

aw - DOCUMENT ME!

vw - DOCUMENT ME!

rw - DOCUMENT ME!

initTime

public static void initTime(double t,
                            double tt)

DOCUMENT ME!

Parameters:

t - DOCUMENT ME!

tt - DOCUMENT ME!

setFlock

public static void setFlock(FlockingAgent[] flock)

DOCUMENT ME!

Parameters:

flock - DOCUMENT ME!

normalize

protected static void normalize(double x,
                                double y)

DOCUMENT ME!

Parameters:

x - DOCUMENT ME!

y - DOCUMENT ME!

len

protected static double len(double x,
                            double y)

DOCUMENT ME!

Parameters:

x - DOCUMENT ME!

y - DOCUMENT ME!

Returns:

DOCUMENT ME!

dist

protected static double dist(double x1,
                             double y1,
                             double x2,
                             double y2)

DOCUMENT ME!

Parameters:

x1 - DOCUMENT ME!

y1 - DOCUMENT ME!

x2 - DOCUMENT ME!

y2 - DOCUMENT ME!

Returns:

DOCUMENT ME!

dot

protected static double dot(double x1,
                            double y1,
                            double x2,
                            double y2)

DOCUMENT ME!

Parameters:

x1 - DOCUMENT ME!

y1 - DOCUMENT ME!

x2 - DOCUMENT ME!

y2 - DOCUMENT ME!

Returns:

DOCUMENT ME!

computeNewHeading

public void computeNewHeading(int self)

DOCUMENT ME!

Parameters:

self -

update

public void update()

DOCUMENT ME!

render

public void render(java.awt.Graphics graphics,
                   int sx,
                   int sy)

DOCUMENT ME!

Parameters:

graphics - DOCUMENT ME!

sx - DOCUMENT ME!

sy - DOCUMENT ME!