com.jeffpalm.eggtris
Class Board

java.lang.Object
  java.awt.Component
      java.awt.Canvas
          com.jeffpalm.eggtris.Board

All Implemented Interfaces:

java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, javax.accessibility.Accessible

public class Board
extends java.awt.Canvas

This public class is the surface on which an Eggtris game is played. The use it you must do the following:

(1) Construct one (see below)

(2) Set an active Shape

(3) Check for lines and when some are found do what you want

(4) If a Shape cannot move down, tell it to giveItsBricksTo this Board

(5) repeat......

Since:

10.23.1998

Author:

Jeffrey Palm

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.Canvas

java.awt.Canvas.AccessibleAWTCanvas

Nested classes/interfaces inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

Board(int x, int y, int width, int height, int brickSize)
Instatiates a new Board from the given parameters.

Method Summary

int	checkForLines() Checks for any lines across the board, starting at the top, and returns the number of lines found.
void	clearRow(int row) CHANGE TO PROTECTED
void	dropRows(int bottomMostRow, int numberOfRows) CHANGE TO PROTECTED
boolean	hasAnEmptySpotIn(int x, int y) This is used by Brick to see if it can move to this spot
void	paint(java.awt.Graphics g) Paints the Graphics context passed in by first painting the back-drop (at the moment, that is just a colored background.
void	putBrick(Brick brick, int x, int y) This is used by Shape (or Brick, I'll come back) to put one of its Bricks on the Board.
void	setActiveShape(MyShape newActiveShape) VERY IMPORTANT!!!!!!!!

Methods inherited from class java.awt.Canvas

addNotify, createBufferStrategy, createBufferStrategy, getAccessibleContext, getBufferStrategy, update

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAlignmentX, getAlignmentY, getBackground, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMinimumSize, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, validate

Methods inherited from class java.lang.Object

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

Constructor Detail

Board

public Board(int x,
             int y,
             int width,
             int height,
             int brickSize)

Instatiates a new Board from the given parameters.

Parameters:

width - Number of bricks across.

height - Number of bricks tall.

brickSize - The size of the bricks that are created. This is needed by both Brick and Shape.

x - X position.

y - Y position.

Method Detail

paint

public void paint(java.awt.Graphics g)

Paints the Graphics context passed in by first painting the back-drop (at the moment, that is just a colored background. Then is paints all the locked bricks, and then the activeShape.

Overrides:

paint in class java.awt.Canvas

Parameters:

g - Graphics context on which to paint.

hasAnEmptySpotIn

public boolean hasAnEmptySpotIn(int x,
                                int y)

This is used by Brick to see if it can move to this spot

Parameters:

x - The possible s spot.

y - The possible y spot.

Returns:

True if this spot is not occupied (null) or not off the Board.

putBrick

public void putBrick(Brick brick,
                     int x,
                     int y)

This is used by Shape (or Brick, I'll come back) to put one of its Bricks on the Board. This is done when it cannot go any further.

Parameters:

brick - Brick to put on.

x - Array spot x in which to put it.

y - Array spot y in which to put it.

setActiveShape

public void setActiveShape(MyShape newActiveShape)

VERY IMPORTANT!!!!!!!!

This MUST be called by the Applet (or whatever the controller is) after a Shape is set. After the Shape giveItsBricks to this, the Applet must call this method so the board can treat the new Shape specially.

Parameters:

newActiveShape - Shape which becomes the new active Shape.

See Also:

#eggtris.Shape

clearRow

public void clearRow(int row)

CHANGE TO PROTECTED

Nullifies the row passed in, if it is within the range of rows.

Called by checkForLines.

Parameters:

row - Row to clear.

See Also:

#eggtris.Board.checkForLines()

dropRows

public void dropRows(int bottomMostRow,
                     int numberOfRows)

CHANGE TO PROTECTED

Drops all the rows by numberofRows, starting at bottomMostRow.

Parameters:

bottomMostRow - The furthest row down from which to start the drop.

numberOfRows - Number of rows to drop.

See Also:

#eggtris.Board.checkForLines()

checkForLines

public int checkForLines()

Checks for any lines across the board, starting at the top, and returns the number of lines found. Ths method takes care of clearing the found lines and dropping the remianing lines. DO NOT call dropRows() or clearRow() from an outside class.

Returns:

The number of lines found.