cse1030.games.tetris

Class Block

java.lang.Object

cse1030.games.tetris.Block

All Implemented Interfaces:

Drawable, Movable, Spinnable

Direct Known Subclasses:

IBlock, JBlock, SBlock

public abstract class Block
extends Object
implements Drawable, Movable, Spinnable

Abstract base class for standard Tetris blocks. Blocks can move, spin, and draw themselves.

Author:

CSE1030_F13_14

Field Summary

Fields

Modifier and Type	Field and Description
protected Color	color The color of the block.
protected BlockGrid	grid The grid that represents the block in its current orientation.
protected IPoint2D	position The position on the playing field of the top left corner of the grid.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Block(int gridSize, IPoint2D pos, Color col) Construct a block given its grid size, position, and color.

Method Summary

Methods

Modifier and Type	Method and Description
void	draw() Draw the block on the playing field in its current position and orientation.
protected void	draw(Color c) Draw the block to the playing field in its current position and orientation using the specified color.
protected void	erase() Erase the block from the playing field in its current position and orientation.
IPoint2D	getPosition() Get the position on the playing field of the top-left corner of the block's grid.
void	moveDown() Moves the block down by 1 grid position and draws the block in its new position.
void	moveLeft() Moves the block to the left by 1 grid position and draws the block in its new position.
void	moveRight() Moves the block to the right by 1 grid position and draws the block in its new position.
void	moveUp() Moves the block up by 0 grid positions and draws the block in its new position.

Methods inherited from class java.lang.Object

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

Methods inherited from interface cse1030.games.tetris.Spinnable

spinLeft, spinRight

Field Detail

grid

protected BlockGrid grid

The grid that represents the block in its current orientation.

position

protected IPoint2D position

The position on the playing field of the top left corner of the grid.

color

protected Color color

The color of the block.

Constructor Detail

Block

protected Block(int gridSize,
     IPoint2D pos,
     Color col)

Construct a block given its grid size, position, and color. this.grid will be a BlockGrid of size gridSize-by-gridSize with all grid locations cleared.

This constructor should be called only by direct child classes.

Parameters:

gridSize - the size of the grid

pos - the position on the playing field of the top-left corner of the grid

col - the color of the block

Precondition:

gridSize > 0

Method Detail

erase

protected void erase()

Erase the block from the playing field in its current position and orientation.

draw

protected void draw(Color c)

Draw the block to the playing field in its current position and orientation using the specified color.

Parameters:

c - the color to draw with

draw

public void draw()

Draw the block on the playing field in its current position and orientation.

Specified by:

draw in interface Drawable

See Also:

Drawable.draw()

moveLeft

public void moveLeft()

Moves the block to the left by 1 grid position and draws the block in its new position.

Specified by:

moveLeft in interface Movable

See Also:

Movable.moveLeft()

moveRight

public void moveRight()

Moves the block to the right by 1 grid position and draws the block in its new position.

Specified by:

moveRight in interface Movable

See Also:

Movable.moveRight()

moveDown

public void moveDown()

Moves the block down by 1 grid position and draws the block in its new position.

Specified by:

moveDown in interface Movable

See Also:

Movable.moveDown()

moveUp

public void moveUp()

Moves the block up by 0 grid positions and draws the block in its new position.

Specified by:

moveUp in interface Movable

See Also:

Movable.moveUp()

getPosition

public IPoint2D getPosition()

Get the position on the playing field of the top-left corner of the block's grid.

Specified by:

getPosition in interface Drawable

See Also:

Drawable.getPosition()

Returns:

the position on the playing field of the top-left corner of the block's grid