erland.game.tetris
Class Block

java.lang.Object
  erland.game.tetris.Block

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

Block1, Block2, Block3, Block4, Block5, Block6, Block7

abstract class Block

extends java.lang.Object

implements java.lang.Cloneable

Represents a tetris block, all Block sub classes should be derived from this

Author:

Erland Isaksson

Field Summary

protected int	rotation rotation angle of block
protected int	x x position of block(This is a block coordinate and not a pixel coordinate)
protected int	y y position of block(This is a block coordinate and not a pixel coordinate)

Constructor Summary

(package private)

Block()

Method Summary

protected abstract boolean	check(BlockMatrix m, int x, int y, int rotation) Check if it is possible to put the block in the specified position and rotation angle
java.lang.Object	clone()
abstract java.awt.Color	getColor() Get the color of the block
int	getRotation() Get the rotation of the block
int	getX()
int	getY()
protected void	init(int x, int y, int rotation) Initialize block
boolean	moveDown(BlockMatrix m) Move block once step down
boolean	moveLeft(BlockMatrix m) Move the block one step left
boolean	moveRight(BlockMatrix m) Move the block one step right
boolean	rotateLeft(BlockMatrix m) Rotate the block 90 degrees counter clockwize
boolean	rotateRight(BlockMatrix m) Rotate the block 90 degrees clockwize
protected abstract void	set(BlockMatrix m, int x, int y, int rotation) Put the block in the specified position and rotation angle
protected abstract void	unset(BlockMatrix m, int x, int y, int rotation) Remove the block from the specified position and rotation angle

Methods inherited from class java.lang.Object

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

Field Detail

rotation

protected int rotation

rotation angle of block

x

protected int x

x position of block(This is a block coordinate and not a pixel coordinate)

y

protected int y

y position of block(This is a block coordinate and not a pixel coordinate)

Constructor Detail

Block

Block()

Method Detail

getColor

public abstract java.awt.Color getColor()

Get the color of the block

Returns:

The color of the block

clone

public java.lang.Object clone()

getRotation

public int getRotation()

Get the rotation of the block

Returns:

The rotation of the block 0,1,2,3

getX

public int getX()

getY

public int getY()

init

protected void init(int x,
                    int y,
                    int rotation)

Initialize block

Parameters:

x - x position of block(Block coordinate)

y - y position of block(Block coordinate)

rotation - rotation angle of block

moveDown

public boolean moveDown(BlockMatrix m)

Move block once step down

Parameters:

m - The BlockMatrix in which the block resides

Returns:

true/false (Success/Failure)

moveRight

public boolean moveRight(BlockMatrix m)

Move the block one step right

Parameters:

m - The BlockMatrix in which the block resides

Returns:

true/false (Success/Failure)

moveLeft

public boolean moveLeft(BlockMatrix m)

Move the block one step left

Parameters:

m - The BlockMatrix in which the block resides

Returns:

true/false (Success/Failure)

rotateRight

public boolean rotateRight(BlockMatrix m)

Rotate the block 90 degrees clockwize

Parameters:

m - The BlockMatrix in which the block resides

Returns:

true/false (Success/Failure)

rotateLeft

public boolean rotateLeft(BlockMatrix m)

Rotate the block 90 degrees counter clockwize

Parameters:

m - The BlockMatrix in which the block resides

Returns:

true/false (Success/Failure)

check

protected abstract boolean check(BlockMatrix m,
                                 int x,
                                 int y,
                                 int rotation)

Check if it is possible to put the block in the specified position and rotation angle

Parameters:

m - The BlockMatrix in which the block resides

x - The x position which should be checked(Block coordinate)

y - The y position which should be checked(Block coordinate)

rotation - The rotation angle which should be checked

Returns:

true/false (Success/Failure)

set

protected abstract void set(BlockMatrix m,
                            int x,
                            int y,
                            int rotation)

Put the block in the specified position and rotation angle

Parameters:

m - The BlockMatrix in which the block resides

x - The x position (Block coordinate)

y - The y position (Block coordinate)

rotation - The rotation angle

unset

protected abstract void unset(BlockMatrix m,
                              int x,
                              int y,
                              int rotation)

Remove the block from the specified position and rotation angle

Parameters:

m - The BlockMatrix in which the block resides

x - The x position (Block coordinate)

y - The y position (Block coordinate)

rotation - The rotation angle