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java.lang.Objectjava.awt.Component
java.awt.Container
javax.swing.JComponent
csta.ibm.pong.GameObject
public abstract class GameObject
An abstract class for an object which can be added to an instance of
Game
The act
method can be implemented to provide a behavior for
the object, and will be called every millisecond automatically by a
Game
it has been added to.
Game.add(csta.ibm.pong.GameObject)
,
Serialized FormNested Class Summary |
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Nested classes/interfaces inherited from class javax.swing.JComponent |
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javax.swing.JComponent.AccessibleJComponent |
Field Summary |
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Fields inherited from class javax.swing.JComponent |
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TOOL_TIP_TEXT_KEY, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW |
Fields inherited from class java.awt.Component |
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BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT |
Fields inherited from interface java.awt.image.ImageObserver |
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ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH |
Constructor Summary | |
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GameObject()
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Method Summary | |
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abstract void |
act()
This method should be implemented to provide a behavior for this object. |
boolean |
collides(GameObject o)
Returns true if this object collides with another
GameObject |
int |
getX()
Gets the x component of the coordinate of the upper left corner of this object The coordinate is relative to the playing field, with 0
being the far left of the field, and positive values moving toward the right
of the field |
int |
getY()
Gets the y component of the coordinate of the upper left corner of this object The coordinate is relative to the playing field, with 0
being the top of the field, and positive values moving toward the
bottom of the field |
void |
paint(java.awt.Graphics g)
Paints the object on the screen. |
void |
setColor(java.awt.Color c)
Sets the color of this object |
void |
setSize(int width,
int height)
Sets the pixel width and height of the object |
void |
setX(int x)
Sets the x (horizontal) position of this object Setting the x position will not affect the y position |
void |
setY(int y)
Sets the y (vertical) position of this object Setting the y position will not affect the x position |
Methods inherited from class javax.swing.JComponent |
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addAncestorListener, addNotify, addVetoableChangeListener,
computeVisibleRect, contains, createToolTip, disable, enable,
firePropertyChange, firePropertyChange, firePropertyChange,
getAccessibleContext, getActionForKeyStroke, getActionMap,
getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls,
getBorder, getBounds, getClientProperty, getComponentPopupMenu,
getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale,
getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu,
getInputMap, getInputMap, getInputVerifier, getInsets, getInsets,
getListeners, getLocation, getMaximumSize, getMinimumSize,
getNextFocusableComponent, getPopupLocation, getPreferredSize,
getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation,
getToolTipText, getToolTipText, getTopLevelAncestor,
getTransferHandler, getUIClassID, getVerifyInputWhenFocusTarget,
getVetoableChangeListeners, getVisibleRect, getWidth, grabFocus,
isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque,
isOptimizedDrawingEnabled, isPaintingTile, isRequestFocusEnabled,
isValidateRoot, paintImmediately, paintImmediately, print, printAll,
putClientProperty, registerKeyboardAction, registerKeyboardAction,
removeAncestorListener, removeNotify, removeVetoableChangeListener,
repaint, repaint, requestDefaultFocus, requestFocus, requestFocus,
requestFocusInWindow, resetKeyboardActions, reshape, revalidate,
scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY,
setAutoscrolls, setBackground, setBorder, setComponentPopupMenu,
setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered,
setEnabled, setFocusTraversalKeys, setFont, setForeground,
setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize,
setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize,
setRequestFocusEnabled, setToolTipText, setTransferHandler,
setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction,
update, updateUI |
Methods inherited from class java.awt.Container |
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add, add, add, add, add, addContainerListener,
addPropertyChangeListener, addPropertyChangeListener,
applyComponentOrientation, areFocusTraversalKeysSet, countComponents,
deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent,
getComponentAt, getComponentAt, getComponentCount, getComponents,
getComponentZOrder, getContainerListeners, getFocusTraversalKeys,
getFocusTraversalPolicy, getLayout, getMousePosition, insets,
invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot,
isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout,
list, list, locate, minimumSize, paintComponents, preferredSize,
printComponents, remove, remove, removeAll, removeContainerListener,
setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy,
setFocusTraversalPolicyProvider, setLayout, transferFocusBackward,
transferFocusDownCycle, validate |
Methods inherited from class java.awt.Component |
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action, add, addComponentListener, addFocusListener,
addHierarchyBoundsListener, addHierarchyListener,
addInputMethodListener, addKeyListener, addMouseListener,
addMouseMotionListener, addMouseWheelListener, bounds, checkImage,
checkImage, contains, createImage, createImage, createVolatileImage,
createVolatileImage, dispatchEvent, enable, enableInputMethods,
firePropertyChange, firePropertyChange, firePropertyChange,
firePropertyChange, firePropertyChange, getBackground, getBounds,
getColorModel, getComponentListeners, getComponentOrientation,
getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners,
getFocusTraversalKeysEnabled, getFont, getForeground,
getGraphicsConfiguration, getHierarchyBoundsListeners,
getHierarchyListeners, getIgnoreRepaint, getInputContext,
getInputMethodListeners, getInputMethodRequests, getKeyListeners,
getLocale, getLocation, getLocationOnScreen, getMouseListeners,
getMouseMotionListeners, getMousePosition, getMouseWheelListeners,
getName, getParent, getPeer, getPropertyChangeListeners,
getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus,
handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet,
isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner,
isFocusTraversable, isFontSet, isForegroundSet, isLightweight,
isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing,
isValid, isVisible, keyDown, keyUp, list, list, list, location,
lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove,
mouseUp, move, nextFocus, paintAll, postEvent, prepareImage,
prepareImage, remove, removeComponentListener, removeFocusListener,
removeHierarchyBoundsListener, removeHierarchyListener,
removeInputMethodListener, removeKeyListener, removeMouseListener,
removeMouseMotionListener, removeMouseWheelListener,
removePropertyChangeListener, removePropertyChangeListener, repaint,
repaint, repaint, resize, resize, setBounds, setBounds,
setComponentOrientation, setCursor, setDropTarget, setFocusable,
setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation,
setLocation, setName, setSize, show, show, size, toString,
transferFocus, transferFocusUpCycle |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public GameObject()
Method Detail |
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public void setSize(int width, int height)
setSize
in class java.awt.Component
width
- a width in pixelsheight
- a height in pixelspublic int getX()
0
being the far left of the field, and positive values moving toward the right
of the field
getX
in class javax.swing.JComponent
public int getY()
0
being the top of the field, and positive values moving toward the
bottom of the field
getY
in class javax.swing.JComponent
public void setX(int x)
x
- the x position of the upper left corner of this objectpublic void setY(int y)
y
- the y position of the upper left corner of this objectpublic void setColor(java.awt.Color c)
c
- the color of this objectColor
public void paint(java.awt.Graphics g)
paint
in class javax.swing.JComponent
public boolean collides(GameObject o)
true
if this object collides with another
GameObject
o
- the GameObject
to test for collision
true
if collision occurspublic abstract void act()
Game
will automatically call this method every
millisecond. It can be implemented to provide basic behavior for
an object, such as movement.
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