game.Tetris Class Reference

This class represents the game environment. More...

Collaboration diagram for game.Tetris:

[legend]

List of all members.

Public Member Functions
	Tetris (int width, int height)
	The constructor is creating an empty Teris Field.
IBlock[][]	getBlockMatrix ()
void	tickEvent ()
	Check for collision Move the Stone down check for enough space to continue the game and exit if not.
void	keyEvent (int key, boolean state)
	listen to keys (Up, Left, Right, Down) and reset the movement, if there is no Stone
void	moveStone ()
	This method actually moves the stone if any.
void	dropStone ()
	Drop a stone if the down key is pressed.
String	toString ()
Static Public Attributes
static boolean	down
	whether the down key is presssed
Private Member Functions
void	clearRow (int rowToDelete)
	Delete a row of the field.
boolean	isRowFull (int row)
	test a row whether it is full
void	clearRows ()
	remove all rows that are full
void	resetKeys ()
	This method is to reset the keys after each collision.
Private Attributes
IBlock[][]	field
	The playfield represented as Block Array.
Score	score
	read the highscore and create a Score Object.
IStone	fStone = null
	The Stone that drops down.
boolean	left
	whether the left key is presssed
boolean	right
	whether the up right is presssed
boolean	turn
	whether the up key is presssed
Static Private Attributes
static final long	serialVersionUID = 7746581299608426600L
	keep the standards

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Detailed Description

This class represents the game environment.

It has som methods toremove al line to advance to the next step and to react to keys.

Author:

Team Solid Sun

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Constructor & Destructor Documentation

game.Tetris.Tetris	(	int	width,
		int	height
	)

The constructor is creating an empty Teris Field.

Parameters:

	width	of the tetris
	height	of the tetris

References game.Tetris.field.

                                             {
                // Initialise the score
                score = new Score();
                // Initialize the Field
                field = new IBlock[height][width];
//              TimerEvent.addTimerListener(new TetrisTimerEventListener());
                for (int row = 0; row < height; row++)
                        for (int col = 0; col < width; col++)
                                field[row][col] = new emptyBlock(row, col);
        }

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Member Function Documentation

void game.Tetris.clearRow

(

int

rowToDelete

)

[private]

Delete a row of the field.

Parameters:

rowToDelete

The row that is to be deleted

References game.Tetris.field, and game.IBlock.isEmpty().

Referenced by game.Tetris.clearRows().

                                               {
                for (int row = rowToDelete - 1; row >= 0; row--) {
                        for (int col = 0; col < field[row].length; col++) {
                                IBlock b = field[row][col];
                                if (b.isEmpty())
                                        field[row + 1][col] = new emptyBlock(row + 1, col);
                                else {
                                        ((Block) b).move(1, 0);
                                        field[row + 1][col] = b;
                                        field[row][col] = new emptyBlock(row, col);
                                }

                        }
                }
        }

boolean game.Tetris.isRowFull

(

int

row

)

[private]

test a row whether it is full

Parameters:

row

the row that isto be tested

Returns:

true if the row is Full

See also:

Tetris.clearRow(int)

Tetris.clearRows()

References game.Tetris.field.

Referenced by game.Tetris.clearRows().

                                           {
                for (IBlock b : field[row])
                        if (b.isEmpty())
                                return false;
                return true;
        }

void game.Tetris.clearRows

(

)

[private]

remove all rows that are full

See also:

Tetris.isRowFull(int)

Tetris.clearRow(int)

References game.Tetris.clearRow(), game.Tetris.field, and game.Tetris.isRowFull().

                                 {
                int rowCount = 0;
                for (int row = 0; row < field.length; row++) {
                        if (isRowFull(row)) {
                                clearRow(row);
                                row--;
                                rowCount++;
                        }
                }
                new DroppEvent(this, rowCount);
        }

IBlock [][] game.Tetris.getBlockMatrix

(

)

Returns:

field The field of the curent tetris

References game.Tetris.field.

Referenced by engine.draw.drawTetris().

                                           {
                return field;
        }

void game.Tetris.tickEvent

(

)

Check for collision Move the Stone down check for enough space to continue the game and exit if not.

References game.Tetris.field, game.Tetris.fStone, and game.IStone.moveDown().

                                {
                if (fStone == null) {
                        fStone = Stones.getStone(this.field, 0, (int) (field[0].length / 2));
                        this.clearRows();
                }
                if (!fStone.moveDown()) {
                        fStone = null;
                }
                if (!(this.field[0][(int) (field[0].length / 2)]).isEmpty()){
                        new GameOverEvent(this);
                }
        }

void game.Tetris.keyEvent	(	int	key,
		boolean	state
	)

listen to keys (Up, Left, Right, Down) and reset the movement, if there is no Stone

Parameters:

	key	the keycode of the key pressed
	state	the state the matching key should be set to

References game.Tetris.down, and game.Tetris.fStone.

Referenced by engine.JavaRenderer.keyPressed(), and engine.JavaRenderer.keyReleased().

                                                     {
                if (fStone == null)
                        return;

                switch (key) {
                case KeyEvent.VK_UP:
                        this.turn = state;
                        break;
                case KeyEvent.VK_LEFT:
                        this.left = state;
                        break;
                case KeyEvent.VK_DOWN:
                        down = state;
                        break;
                case KeyEvent.VK_RIGHT:
                        this.right = state;
                        break;
                }
                this.moveStone();
        }

void game.Tetris.moveStone

(

)

This method actually moves the stone if any.

the direction is stored in the various vars of this class.

See also:

Tetris.left

Tetris.right

Tetris.down

Tetris.turn

References game.Tetris.fStone, game.Tetris.left, game.IStone.moveLeft(), game.IStone.moveRight(), game.Tetris.right, game.IStone.rotate(), and game.Tetris.turn.

                                {
                if (fStone == null) {
                        this.resetKeys();
                        return;
                }
                if (this.left){
                        fStone.moveLeft();
                        this.left = false;
                }
                if (this.right){
                        fStone.moveRight();
                        this.right = false;
                }
                if (this.turn) {
                        fStone.rotate();
                        this.turn = false;
                }
        }

void game.Tetris.dropStone

(

)

Drop a stone if the down key is pressed.

References game.Tetris.down, game.Tetris.fStone, and game.IStone.moveDown().

                               {
                if(fStone == null){
                        this.resetKeys();
                        return;
                }
                if (down)
                        fStone.moveDown();
        }

void game.Tetris.resetKeys

(

)

[private]

This method is to reset the keys after each collision.

Somehow without this there are some strange movement artefacts.

See also:

Tetris.left

Tetris.right

Tetris.down

Tetris.turn

References game.Tetris.down.

                                 {
                down = false;
                this.turn = false;
                this.left = false;
                this.right = false;
        }

String game.Tetris.toString

(

)

References game.Tetris.field.

                                 {
                String res = "";
                for (IBlock[] row : field) {
                        for (IBlock block : row) {
                                if (block.isEmpty())
                                        res += " ";
                                else
                                        res += "+";
                        }
                        res += '\n';
                }
                return res;
        }

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Member Data Documentation

final long game.Tetris.serialVersionUID = 7746581299608426600L [static, private]

keep the standards

IBlock [][] game.Tetris.field [private]

The playfield represented as Block Array.

Referenced by game.Tetris.clearRow(), game.Tetris.clearRows(), game.Tetris.getBlockMatrix(), game.Tetris.isRowFull(), game.Tetris.Tetris(), game.Tetris.tickEvent(), and game.Tetris.toString().

Score game.Tetris.score [private]

read the highscore and create a Score Object.

IStone game.Tetris.fStone = null [private]

The Stone that drops down.

Referenced by game.Tetris.dropStone(), game.Tetris.keyEvent(), game.Tetris.moveStone(), and game.Tetris.tickEvent().

boolean game.Tetris.left [private]

whether the left key is presssed

Referenced by game.Tetris.moveStone().

boolean game.Tetris.right [private]

whether the up right is presssed

Referenced by game.Tetris.moveStone().

boolean game.Tetris.turn [private]

whether the up key is presssed

Referenced by game.Tetris.moveStone().

boolean game.Tetris.down [static]

whether the down key is presssed

Referenced by game.Tetris.dropStone(), game.Tetris.keyEvent(), and game.Tetris.resetKeys().

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The documentation for this class was generated from the following file:

• game/Tetris.java