com.sun.sgs.example.hack.server.level

Class SimpleLevel

java.lang.Object

com.sun.sgs.example.hack.server.level.SimpleLevel

All Implemented Interfaces:

com.sun.sgs.app.ChannelListener, com.sun.sgs.app.ManagedObject, Level, Serializable

public class SimpleLevel
extends Object
implements Level, Serializable, com.sun.sgs.app.ChannelListener

This is a simple implementation of Level that doesn't try to do anything fancy with managing the internal state. It uses a LevelBoard to track eveything on the level,

See Also:

Serialized Form

Field Summary

Fields inherited from interface com.sun.sgs.example.hack.server.level.Level

NAME_PREFIX

Constructor Summary

Constructors

Constructor and Description
SimpleLevel(String levelName, String gameName) Creates a SimpleLevel.

Method Summary

Methods

Modifier and Type	Method and Description
void	addCharacter(CharacterManager mgr) Adds a character to this level at some random point.
boolean	addCharacter(CharacterManager mgr, int startX, int startY) Adds a character to this level at the given location.
void	addItem(Item item) Adds an item to this level at some random position.
void	addItem(Item item, int startX, int startY) Adds an item to this level at the given position.
Board	getBoardSnapshot() Returns a snapshot (ie, static) view of the level.
String	getName() Returns the name of this level.
boolean	move(CharacterManager mgr, KeyMessages.Type direction) Tries to move the given character in the given direction
void	receivedMessage(com.sun.sgs.app.Channel channel, com.sun.sgs.app.ClientSession sender, ByteBuffer message)
void	removeCharacter(CharacterManager mgr) Removes a character from the level.
void	setBoard(LevelBoard board) Sets the Board that maintains state for this level.
boolean	take(CharacterManager mgr) Tries to take items at the character's current location.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleLevel

public SimpleLevel(String levelName,
           String gameName)

Creates a SimpleLevel.

Parameters:

levelName - the name of this level

gameName - the name of the game where this level exists

Method Detail

setBoard

public void setBoard(LevelBoard board)

Sets the Board that maintains state for this level. Typically this only called once, shortly after the Level is created.

Parameters:

board - the Board used by this Level

getName

public String getName()

Returns the name of this level.

Specified by:

getName in interface Level

Returns:

the name

receivedMessage

public void receivedMessage(com.sun.sgs.app.Channel channel,
                   com.sun.sgs.app.ClientSession sender,
                   ByteBuffer message)

Specified by:

receivedMessage in interface com.sun.sgs.app.ChannelListener

addCharacter

public void addCharacter(CharacterManager mgr)

Adds a character to this level at some random point.

Specified by:

addCharacter in interface Level

Parameters:

mgr - the CharacterManager who's Character is joining this Level

addCharacter

public boolean addCharacter(CharacterManager mgr,
                   int startX,
                   int startY)

Adds a character to this level at the given location.

Specified by:

addCharacter in interface Level

Parameters:

mgr - the CharacterManager who's Character is joining this Level

startX - the starting x-coordinate

startY - the starting y-coordinate

Returns:

true upon success, otherwise false.

removeCharacter

public void removeCharacter(CharacterManager mgr)

Removes a character from the level. This is typically only called when a character wants to remove itself directly (eg, they were killed, or quit back to the lobby). Otherwise, characters are removed naturally through other actions (like movement).

Specified by:

removeCharacter in interface Level

Parameters:

mgr - the CharacterManager who's Character is joining this Level

addItem

public void addItem(Item item)

Adds an item to this level at some random position.

Specified by:

addItem in interface Level

Parameters:

item - the Item

addItem

public void addItem(Item item,
           int startX,
           int startY)

Adds an item to this level at the given position.

Specified by:

addItem in interface Level

Parameters:

item - the Item

startX - the starting x-coordinate

startY - the starting y-coordinate

getBoardSnapshot

public Board getBoardSnapshot()

Returns a snapshot (ie, static) view of the level. This uses the SnapshotBoard so it can be shared with a client.

Specified by:

getBoardSnapshot in interface Level

Returns:

a snapshot of the board

move

public boolean move(CharacterManager mgr,
           KeyMessages.Type direction)

Tries to move the given character in the given direction

Specified by:

move in interface Level

Parameters:

mgr - the manager for the Character that is trying to move

direction - the direction in which the character wants to move

Returns:

true if we moved in the requested direction, false otherwise

take

public boolean take(CharacterManager mgr)

Tries to take items at the character's current location.

Specified by:

take in interface Level

Parameters:

mgr - the manager for the Character that is trying to take the items

Returns:

true if we took something, false otherwise