Class games.Battle.shared.sys.Common 
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Class games.Battle.shared.sys.Common 

java.lang.Object
   |
   +----games.Battle.shared.sys.Common
public class Common
extends Object
Common is a collection of static functions that perform a packing and unpacking services for both the client and server side.

Constructor Index

o Common()

Method Index

o RCtoIndex(int, int)
converts a (row,col) tuple to a unique index in a contiguous array
o exit(int)
wraps System.exit() to be friendly as a standlaone application and as an applet.
o extractCount(byte)
extract the run length encoding count from a packed byte.
o extractOccupancy(byte)
extract the occupancy from a packed byte
o extractPipes(byte)
extract the pipes froma packed byte.
o extractTerrain(byte)
extract the terrain fom a packed byte
o extractTroops(byte)
extract the number of troops from a packed byte
o getRandomCol()
returns a random column
o getRandomRow()
returns a random row
o indexToCol(int)
converts an index to a column
o indexToRow(int)
converts an index to a row
o isPlayer(int)
return whether the number representing a cell occupancy is a player (not invisible, not unoccupied and not unchanged)
o stuffOccupancyAndCount(int, int)
stuffs occupancy and a 4-bit counter int a byte
o stuffOccupancyAndTerrain(int, int)
stuffs occupancy in bits 7-5, and terrain in bits 4-2
o stuffOccupancyAndTroops(int, int)
stuffs occupancy and troops
o stuffPipes(int)
stuffs pipes into hi byte

Constructors

o Common 
  public Common()

Methods

o isPlayer 
  public final static boolean isPlayer(int occupancy)
return whether the number representing a cell occupancy is a player (not invisible, not unoccupied and not unchanged)
Parameters:
occupancy - a particular cell's occupancy
o extractOccupancy 
  public final static int extractOccupancy(byte b)
extract the occupancy from a packed byte
o extractTerrain 
  public final static int extractTerrain(byte b)
extract the terrain fom a packed byte
o extractTroops 
  public final static int extractTroops(byte b)
extract the number of troops from a packed byte
o extractPipes 
  public final static int extractPipes(byte b)
extract the pipes froma packed byte.
o extractCount 
  public final static int extractCount(byte b)
extract the run length encoding count from a packed byte.
o stuffOccupancyAndTerrain 
  public final static byte stuffOccupancyAndTerrain(int o,
                                                    int t)
stuffs occupancy in bits 7-5, and terrain in bits 4-2
o stuffOccupancyAndCount 
  public final static byte stuffOccupancyAndCount(int o,
                                                  int c)
stuffs occupancy and a 4-bit counter int a byte
o stuffOccupancyAndTroops 
  public final static byte stuffOccupancyAndTroops(int o,
                                                   int t)
stuffs occupancy and troops
o stuffPipes 
  public final static byte stuffPipes(int p)
stuffs pipes into hi byte
o RCtoIndex 
  public final static int RCtoIndex(int r,
                                    int c)
converts a (row,col) tuple to a unique index in a contiguous array
o indexToRow 
  public final static int indexToRow(int index)
converts an index to a row
o indexToCol 
  public final static int indexToCol(int index)
converts an index to a column
o getRandomRow 
  public final static int getRandomRow()
returns a random row
o getRandomCol 
  public final static int getRandomCol()
returns a random column
o exit 
  public final static void exit(int code)
wraps System.exit() to be friendly as a standlaone application and as an applet. 
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