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Class jovial.slotCar.track.TrackSegment

java.lang.Object
   |
   +----jovial.slotCar.animator.Drawable
           |
           +----jovial.slotCar.track.TrackSegment

public class TrackSegment

extends Drawable

canMove()

color()

erase(Graphics)

Erase this drawable.

firstSlotIsNearOrigin()

height()

Give the height of this Drawable

movePositionBy(TrackPosition, double)

Move a position along the track, possibly progressing to next segment.

next()

Get the next segment

setFirstSlotIsNearOrigin(boolean)

Set if slot 0 is near the origin.

setHeight(int)

Set the height of this segment

setNext(TrackSegment)

Set the next segment pointer.

  public int height()

Give the height of this Drawable

Overrides:

height in class Drawable

  public void erase(Graphics g)

Erase this drawable. This only needs to do something if canMove() gives true.

Parameters:

g - The graphics on which erasing is to occur

Overrides:

erase in class Drawable

  public boolean canMove()

Returns:

true iff this drawable might move around the screen

Overrides:

canMove in class Drawable

  public Color color()

Returns:

The color this track segment will be drawn

  protected void setHeight(int h)

Set the height of this segment

Parameters:

h - The new height.

  protected void setNext(TrackSegment next)

Set the next segment pointer. This is needed so we can make a circular track!

Parameters:

next - The next segment

  protected TrackSegment next()

Get the next segment

Returns:

The next segment

  protected abstract void movePositionBy(TrackPosition p,
                                         double d)

Move a position along the track, possibly progressing to next segment. Should only be called from TrackPosition.

Parameters:

p - The position to move

d - The distance to move it (in pixels)

  protected boolean firstSlotIsNearOrigin()

Returns:

true iff slot 0 is near the "origin". Subclasses define what this means.

  protected void setFirstSlotIsNearOrigin(boolean f)

Set if slot 0 is near the origin. If unset, defaults to true

Parameters:

f - The new value

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