EDU.gatech.cc.is.simulation
Class GolfBallSim

java.lang.Object
  |
  +--EDU.gatech.cc.is.simulation.AttractorSim
        |
        +--EDU.gatech.cc.is.simulation.GolfBallSim

Direct Known Subclasses:

GolfBallNoiseSim

public class GolfBallSim

extends AttractorSim

implements SimulatedObject, SocRef

A golfball for RoboCup Soccer. Introduction
GolfBallSim implements a golf ball for RoboCup soccer simulations. The ball is also the scorekeeper and the referee; after all who would know better whether a scoring event occured?

A "shot clock" keeps track of how long since a scoring event occured. If it times-out, the ball is reset to the center of the field.

Copyright (c)2000 Tucker Balch

Field Summary

static boolean	DEBUG
protected Vec2	velocity

Fields inherited from class EDU.gatech.cc.is.simulation.AttractorSim

all_objects, background, bottom, DEBUG, deposited, foreground, left, picked_up, position, RADIUS, rando, right, seed, top, unique_id, visionclass

Constructor Summary

GolfBallSim()
Instantiate a golf ball.

Method Summary

void	draw(java.awt.Graphics g, int w, int h, double t, double b, double l, double r) Draw the golf ball and display score and shotclock.
boolean	eastJustScored() True if it is east just scored.
boolean	eastKickOff() True if it is east's turn to kick off.
boolean	playBall() True if the game is underway.
void	push(Vec2 d, Vec2 v) Handle a push.
void	takeStep(long time_increment, SimulatedObject[] all_objs) Take a simulated step;
boolean	westJustScored() True if it is west just scored.
boolean	westKickOff() True if it is west's turn to kick off.

Methods inherited from class EDU.gatech.cc.is.simulation.AttractorSim

checkCollision, checkCollision, clearTrail, draw, drawIcon, drawID, drawState, drawTrail, getCenter, getClosestPoint, getID, getPosition, getVisionClass, init, isObstacle, isPickupable, isPushable, pickUp, putDown, quit, receive, setID, setTrailLength, setVisionClass

Methods inherited from class java.lang.Object

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

Field Detail

velocity

protected Vec2 velocity

DEBUG

public static final boolean DEBUG

Constructor Detail

GolfBallSim

public GolfBallSim()

Instantiate a golf ball.

Method Detail

takeStep

public void takeStep(long time_increment,
                     SimulatedObject[] all_objs)

Take a simulated step;

Specified by:

takeStep in interface SimulatedObject

Overrides:

takeStep in class AttractorSim

Tags copied from interface: SimulatedObject

Parameters:

time_increment - how much time has elapsed since the last call.

all_objects - the other objects in the simulation.

push

public void push(Vec2 d,
                 Vec2 v)

Handle a push. This is how to kick or push the ball.

Specified by:

push in interface SimulatedObject

Overrides:

push in class AttractorSim

Tags copied from interface: SimulatedObject

Parameters:

d - the direction and distance of the push.

v - the velocity of the push.

draw

public void draw(java.awt.Graphics g,
                 int w,
                 int h,
                 double t,
                 double b,
                 double l,
                 double r)

Draw the golf ball and display score and shotclock.

Specified by:

draw in interface SimulatedObject

Overrides:

draw in class AttractorSim

Tags copied from interface: SimulatedObject

Parameters:

g - graphics area to draw the object.

w - the width in pixels of g.

h - the height in pixels of g.

t - the y coordinate represented by the top boundary of the drawing area.

b - the y coordinate represented by the bottom boundary of the drawing area.

l - the x coordinate represented by the left boundary of the drawing area.

r - the x coordinate represented by the right boundary of the drawing area.

playBall

public boolean playBall()

True if the game is underway. If false, the soccer robots should reset their positions on the field according to whether they kick off or not.

Specified by:

playBall in interface SocRef

Returns:

true if game is underway.

eastKickOff

public boolean eastKickOff()

True if it is east's turn to kick off.

Specified by:

eastKickOff in interface SocRef

Returns:

true if it is east's turn to kick off.

westKickOff

public boolean westKickOff()

True if it is west's turn to kick off. This occurs at the begining of the game, and after east scores.

Specified by:

westKickOff in interface SocRef

Returns:

true if it is west's turn to kick off.

westJustScored

public boolean westJustScored()

True if it is west just scored.

Specified by:

westJustScored in interface SocRef

Returns:

true if west just scored.

eastJustScored

public boolean eastJustScored()

True if it is east just scored.

Specified by:

eastJustScored in interface SocRef

Returns:

true if east just scored.