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xwords/xwords4/common/model.c

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/* -*-mode: C; fill-column: 78; c-basic-offset: 4; -*- */
/*
* Copyright 2000 by Eric House (fixin@peak.org). All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* #include <assert.h> */
#include "comtypes.h"
#include "modelp.h"
#include "xwstream.h"
#include "util.h"
#include "pool.h"
#include "strutils.h"
#include "LocalizedStrIncludes.h"
#ifdef CPLUS
extern "C" {
#endif
#define mEND 0x6d454e44
/****************************** prototypes ******************************/
typedef void (*MovePrintFuncPre)(ModelCtxt*, XP_U16, StackEntry*, void*);
typedef void (*MovePrintFuncPost)(ModelCtxt*, XP_U16, StackEntry*, XP_S16,
void*);
static void incrPendingTileCountAt( ModelCtxt* model, XP_U16 col,
XP_U16 row );
static void decrPendingTileCountAt( ModelCtxt* model, XP_U16 col,
XP_U16 row );
static void notifyBoardListeners( ModelCtxt* model, XP_U16 turn,
XP_U16 col, XP_U16 row, XP_Bool added );
static void notifyTrayListeners( ModelCtxt* model, XP_U16 turn, TileBit bits);
static CellTile getModelTileRaw( ModelCtxt* model, XP_U16 col, XP_U16 row );
static void setModelTileRaw( ModelCtxt* model, XP_U16 col, XP_U16 row,
CellTile tile );
static void assignPlayerTiles( ModelCtxt* model, XP_S16 turn,
TrayTileSet* tiles );
static void makeTileTrade( ModelCtxt* model, XP_S16 player,
TrayTileSet* oldTiles, TrayTileSet* newTiles );
static XP_S16 commitTurn( ModelCtxt* model, XP_S16 turn,
TrayTileSet* newTiles, XWStreamCtxt* stream,
XP_Bool useStack );
static void buildModelFromStack( ModelCtxt* model, StackCtxt* stack,
XWStreamCtxt* stream,
MovePrintFuncPre mpfpr,
MovePrintFuncPost mpfpo,
void* closure );
static void setPendingCounts( ModelCtxt* model, XP_S16 turn );
static void loadPlayerCtxt( XWStreamCtxt* stream, PlayerCtxt* pc );
static void writePlayerCtxt( XWStreamCtxt* stream, PlayerCtxt* pc );
/*****************************************************************************
*
****************************************************************************/
ModelCtxt*
model_make( MPFORMAL DictionaryCtxt* dict, XW_UtilCtxt* util, XP_U16 nCols,
XP_U16 nRows )
{
ModelCtxt* result = (ModelCtxt*)XP_MALLOC( mpool, sizeof( *result ) );
if ( result != NULL ) {
XP_MEMSET( result, 0, sizeof(*result) );
MPASSIGN(result->vol.mpool, mpool);
result->vol.dict = dict;
result->vol.util = util;
model_init( result, nCols, nRows );
XP_ASSERT( !!util->gameInfo );
result->vol.gi = util->gameInfo;
}
return result;
} /* model_make */
ModelCtxt*
model_makeFromStream( MPFORMAL XWStreamCtxt* stream, DictionaryCtxt* dict,
XW_UtilCtxt* util )
{
ModelCtxt* model;
DictionaryCtxt* savedDict = (DictionaryCtxt*)NULL;
XP_U16 nCols, nRows;
short i;
XP_Bool hasDict;
XP_U16 nPlayers;
nCols = (XP_U16)stream_getBits( stream, NUMCOLS_NBITS );
nRows = (XP_U16)stream_getBits( stream, NUMCOLS_NBITS );
hasDict = stream_getBits( stream, 1 );
nPlayers = (XP_U16)stream_getBits( stream, NPLAYERS_NBITS );
if ( hasDict ) {
savedDict = util_makeEmptyDict( util );
dict_loadFromStream( savedDict, stream );
if ( !!dict ) {
XP_ASSERT( dict_tilesAreSame( savedDict, dict ) );
dict_destroy( savedDict );
savedDict = dict;
}
}
model = model_make( MPPARM(mpool) savedDict, util, nCols, nRows );
model->nPlayers = nPlayers;
stack_loadFromStream( model->vol.stack, stream );
buildModelFromStack( model, model->vol.stack, (XWStreamCtxt*)NULL,
(MovePrintFuncPre)NULL,
(MovePrintFuncPost)NULL, NULL );
for ( i = 0; i < model->nPlayers; ++i ) {
loadPlayerCtxt( stream, &model->players[i] );
setPendingCounts( model, i );
invalidateScore( model, i );
}
XP_ASSERT( stream_getU32( stream ) == mEND );
return model;
} /* model_makeFromStream */
void
model_writeToStream( ModelCtxt* model, XWStreamCtxt* stream )
{
short i;
DictionaryCtxt* dict;
stream_putBits( stream, NUMCOLS_NBITS, model->nCols );
stream_putBits( stream, NUMCOLS_NBITS, model->nRows );
dict = model_getDictionary( model );
stream_putBits( stream, 1, dict != NULL );
/* we have two bits for nPlayers, so range must be 0..3, not 1..4 */
stream_putBits( stream, NPLAYERS_NBITS, model->nPlayers );
if ( dict != NULL ) {
dict_writeToStream( model_getDictionary( model ), stream );
}
stack_writeToStream( model->vol.stack, stream );
for ( i = 0; i < model->nPlayers; ++i ) {
writePlayerCtxt( stream, &model->players[i] );
}
#ifdef DEBUG
stream_putU32( stream, mEND );
#endif
} /* model_writeToStream */
void
model_init( ModelCtxt* model, XP_U16 nCols, XP_U16 nRows )
{
ModelVolatiles vol = model->vol;
XP_ASSERT( model != NULL );
XP_MEMSET( model, 0, sizeof( *model ) );
XP_MEMSET( &model->tiles, TILE_EMPTY_BIT, sizeof(model->tiles) );
model->nCols = nCols;
model->nRows = nRows;
model->vol = vol;
if ( !!model->vol.stack ) {
stack_init( model->vol.stack );
} else {
model->vol.stack = stack_make( MPPARM(model->vol.mpool)
util_getVTManager(model->vol.util));
}
} /* model_init */
void
model_destroy( ModelCtxt* model )
{
stack_destroy( model->vol.stack );
/* is this it!? */
XP_FREE( model->vol.mpool, model );
} /* model_destroy */
static void
buildModelFromStack( ModelCtxt* model, StackCtxt* stack,
XWStreamCtxt* stream,
MovePrintFuncPre mpf_pre, MovePrintFuncPost mpf_post,
void* closure )
{
StackEntry entry;
XP_U16 i;
XP_S16 moveScore = 0; /* keep compiler happy */
for ( i = 0; stack_getNthEntry( stack, i, &entry ); ++i ) {
if ( !!mpf_pre ) {
(*mpf_pre)( model, i, &entry, closure );
}
switch ( entry.moveType ) {
case MOVE_TYPE:
model_makeTurnFromMoveInfo( model, entry.playerNum,
&entry.u.move.moveInfo);
moveScore = commitTurn( model, entry.playerNum,
&entry.u.move.newTiles, stream, XP_FALSE);
break;
case TRADE_TYPE:
makeTileTrade( model, entry.playerNum, &entry.u.trade.oldTiles,
&entry.u.trade.newTiles );
break;
case ASSIGN_TYPE:
assignPlayerTiles( model, entry.playerNum,
&entry.u.assign.tiles );
break;
case PHONY_TYPE: /* nothing to add */
model_makeTurnFromMoveInfo( model, entry.playerNum,
&entry.u.phony.moveInfo);
/* do something here to cause it to print */
(void)getCurrentMoveScoreIfLegal( model, entry.playerNum, stream,
&moveScore );
moveScore = 0;
model_resetCurrentTurn( model, entry.playerNum );
break;
default:
XP_ASSERT(0);
}
if ( !!mpf_post ) {
(*mpf_post)( model, i, &entry, moveScore, closure );
}
}
} /* buildModelFromStack */
void
model_setNPlayers( ModelCtxt* model, XP_U16 nPlayers )
{
model->nPlayers = nPlayers;
} /* model_setNPlayers */
void
model_setDictionary( ModelCtxt* model, DictionaryCtxt* dict )
{
model->vol.dict = dict;
} /* model_setDictionary */
DictionaryCtxt*
model_getDictionary( ModelCtxt* model )
{
return model->vol.dict;
} /* model_getDictionary */
static XP_Bool
getPendingTileFor( ModelCtxt* model, XP_U16 turn, XP_U16 col, XP_U16 row,
CellTile* cellTile )
{
XP_Bool found = XP_FALSE;
PlayerCtxt* player;
PendingTile* pendings;
XP_U16 i;
player = &model->players[turn];
pendings = player->pendingTiles;
for ( i = 0; i < player->nPending; ++i ) {
if ( (pendings->col == col) && (pendings->row == row) ) {
*cellTile = pendings->tile;
found = XP_TRUE;
XP_ASSERT ( (*cellTile & TILE_EMPTY_BIT) == 0 );
break;
}
++pendings;
}
return found;
} /* getPendingTileFor */
XP_Bool
model_getTile( ModelCtxt* model, XP_U16 col, XP_U16 row, XP_Bool getPending,
XP_S16 turn, Tile* tileP, XP_Bool* isBlank,
XP_Bool* pendingP, XP_Bool* recentP )
{
CellTile cellTile = getModelTileRaw( model, col, row );
XP_Bool pending = XP_FALSE;
if ( (cellTile & TILE_PENDING_BIT) != 0 ) {
if ( getPending
&& getPendingTileFor( model, turn, col, row, &cellTile ) ) {
/* it's pending, but caller doesn't want to see it */
pending = XP_TRUE;
} else {
cellTile = EMPTY_TILE;
}
}
/* this needs to happen after the above b/c cellTile gets changed */
if ( (cellTile & TILE_EMPTY_BIT) != 0 ) {
return XP_FALSE;
}
*tileP = cellTile & TILE_VALUE_MASK;
*isBlank = IS_BLANK(cellTile);
*pendingP = pending;
if ( !!recentP ) {
*recentP = (cellTile & PREV_MOVE_BIT) != 0;
}
return XP_TRUE;
} /* model_getTile */
void
model_listPlacedBlanks( ModelCtxt* model, XP_U16 turn,
XP_Bool includePending, BlankQueue* bcp )
{
XP_U16 nCols = model_numCols( model );
XP_U16 nRows = model_numRows( model );
XP_U16 col, row;
XP_U16 nBlanks = 0;
for ( row = 0; row < nRows; ++row ) {
for ( col = 0; col < nCols; ++col ) {
CellTile cellTile = getModelTileRaw( model, col, row );
if ( (cellTile & TILE_PENDING_BIT) != 0 ) {
if ( !includePending ||
!getPendingTileFor( model, turn, col, row, &cellTile ) ) {
continue;
}
}
if ( (cellTile & TILE_BLANK_BIT) != 0 ) {
bcp->col[nBlanks] = (XP_U8)col;
bcp->row[nBlanks] = (XP_U8)row;
++nBlanks;
}
}
}
bcp->nBlanks = nBlanks;
} /* model_listPlacedBlanks */
void
model_foreachPrevCell( ModelCtxt* model, BoardListener bl, void* closure )
{
XP_U16 col, row;
for ( col = 0; col < model->nCols; ++col ) {
for ( row = 0; row < model->nRows; ++row) {
CellTile tile = getModelTileRaw( model, col, row );
if ( (tile & PREV_MOVE_BIT) != 0 ) {
(*bl)( closure, (XP_U16)CELL_OWNER(tile), col, row, XP_FALSE );
}
}
}
} /* model_foreachPrevCell */
static void
clearAndNotify( void* closure, XP_U16 turn, XP_U16 col, XP_U16 row,
XP_Bool added )
{
ModelCtxt* model = (ModelCtxt*)closure;
CellTile tile = getModelTileRaw( model, col, row );
setModelTileRaw( model, col, row, (CellTile)(tile & ~PREV_MOVE_BIT) );
notifyBoardListeners( model, (XP_U16)CELL_OWNER(tile), col, row,
XP_FALSE );
} /* clearAndNotify */
static void
clearLastMoveInfo( ModelCtxt* model )
{
model_foreachPrevCell( model, clearAndNotify, model );
} /* clearLastMoveInfo */
static void
invalLastMove( ModelCtxt* model )
{
if ( !!model->vol.boardListenerFunc ) {
model_foreachPrevCell( model, model->vol.boardListenerFunc,
model->vol.boardListenerData );
}
} /* invalLastMove */
void
model_foreachPendingCell( ModelCtxt* model, XP_S16 turn,
BoardListener bl, void* closure )
{
PendingTile* pt;
PlayerCtxt* player;
XP_S16 count;
XP_ASSERT( turn >= 0 );
player = &model->players[turn];
count = player->nPending;
for ( pt = player->pendingTiles; count--; ++pt ) {
XP_U16 col, row;
col = pt->col;
row = pt->row;
(*bl)( closure, turn, pt->col, pt->row, XP_FALSE );
}
} /* model_invalPendingCells */
XP_U16
model_getCellOwner( ModelCtxt* model, XP_U16 col, XP_U16 row )
{
CellTile tile;
XP_U16 result;
tile = getModelTileRaw( model, col, row );
result = CELL_OWNER(tile);
return result;
} /* model_getCellOwner */
static void
setModelTileRaw( ModelCtxt* model, XP_U16 col, XP_U16 row, CellTile tile )
{
XP_ASSERT( col < MAX_COLS );
XP_ASSERT( row < MAX_ROWS );
model->tiles[col][row] = tile;
} /* model_setTile */
static CellTile
getModelTileRaw( ModelCtxt* model, XP_U16 col, XP_U16 row )
{
XP_ASSERT( col < MAX_COLS );
XP_ASSERT( row < MAX_ROWS );
return model->tiles[col][row];
} /* getModelTileRaw */
static void
undoFromMoveInfo( ModelCtxt* model, XP_U16 turn, Tile blankTile, MoveInfo* mi )
{
XP_U16 col, row, i;
XP_U16* other;
MoveInfoTile* tinfo;
col = row = mi->commonCoord;
other = mi->isHorizontal? &col: &row;
for ( tinfo = mi->tiles, i = 0; i < mi->nTiles; ++tinfo, ++i ) {
Tile tile;
*other = tinfo->varCoord;
tile = tinfo->tile;
setModelTileRaw( model, col, row, EMPTY_TILE );
notifyBoardListeners( model, turn, col, row, XP_FALSE );
if ( IS_BLANK(tile) ) {
tile = blankTile;
}
model_addPlayerTile( model, turn, -1, tile );
}
adjustScoreForUndone( model, mi, turn );
} /* undoFromMoveInfo */
/* Remove tiles in a set from tray and put them back in the pool.
*/
static void
replaceNewTiles( ModelCtxt* model, PoolContext* pool, XP_U16 turn,
TrayTileSet* tileSet )
{
Tile* t;
XP_U16 i, nTiles;
for ( t = tileSet->tiles, i = 0, nTiles = tileSet->nTiles;
i < nTiles; ++i ) {
XP_S16 index;
Tile tile = *t++;
index = model_trayContains( model, turn, tile );
XP_ASSERT( index >= 0 );
model_removePlayerTile( model, turn, index );
}
pool_replaceTiles( pool, tileSet);
} /* replaceNewTiles */
/* Turn the most recent move into a phony.
*/
void
model_rejectPreviousMove( ModelCtxt* model, PoolContext* pool, XP_U16* turn )
{
StackCtxt* stack = model->vol.stack;
StackEntry entry;
Tile blankTile = dict_getBlankTile( model_getDictionary(model) );
stack_popEntry( stack, &entry );
XP_ASSERT( entry.moveType == MOVE_TYPE );
replaceNewTiles( model, pool, entry.playerNum, &entry.u.move.newTiles );
undoFromMoveInfo( model, entry.playerNum, blankTile,
&entry.u.move.moveInfo );
stack_addPhony( stack, entry.playerNum, &entry.u.phony.moveInfo );
*turn = entry.playerNum;
} /* model_rejectPreviousMove */
/* Undo a move, but only if it's the move we're expecting to undo (as
* indicated by *moveNumP, if >= 0).
*/
XP_Bool
model_undoLatestMoves( ModelCtxt* model, PoolContext* pool,
XP_U16 nMovesSought, XP_U16* turnP, XP_S16* moveNumP )
{
StackCtxt* stack = model->vol.stack;
StackEntry entry;
XP_U16 turn = 0;
Tile blankTile = dict_getBlankTile( model_getDictionary(model) );
XP_Bool success = XP_TRUE;
XP_S16 moveSought = *moveNumP;
XP_U16 nMovesUndone;
XP_U16 nStackEntries;
nStackEntries = stack_getNEntries( stack );
if ( nStackEntries < nMovesSought ) {
return XP_FALSE;
} else if ( nStackEntries <= model->nPlayers ) {
return XP_FALSE;
}
for ( nMovesUndone = 0; success && nMovesUndone < nMovesSought; ) {
success = stack_popEntry( stack, &entry );
if ( success ) {
++nMovesUndone;
if ( moveSought < 0 ) {
moveSought = entry.moveNum;
} else if ( moveSought-- != entry.moveNum ) {
success = XP_FALSE;
break;
}
turn = entry.playerNum;
model_resetCurrentTurn( model, turn );
if ( entry.moveType == MOVE_TYPE ) {
/* get the tiles out of player's tray and back into the
pool */
if ( !!pool ) {
replaceNewTiles( model, pool, turn, &entry.u.move.newTiles );
}
undoFromMoveInfo( model, turn, blankTile,
&entry.u.move.moveInfo );
} else if ( entry.moveType == TRADE_TYPE ) {
XP_ASSERT ( !!pool );
replaceNewTiles( model, pool, turn, &entry.u.trade.newTiles );
pool_removeTiles( pool, &entry.u.trade.oldTiles );
assignPlayerTiles( model, turn, &entry.u.trade.oldTiles );
} else if ( entry.moveType == PHONY_TYPE ) {
/* nothing to do, since nothing happened */
} else {
XP_ASSERT( entry.moveType == ASSIGN_TYPE );
success = XP_FALSE;
break;
}
}
}
/* Find the first MOVE still on the stack and highlight its tiles since
they're now the most recent move. Trades and lost turns ignored. */
nStackEntries = stack_getNEntries( stack );
for ( ; ; ) {
StackEntry entry;
if ( nStackEntries == 0 ||
!stack_getNthEntry( stack, nStackEntries - 1, &entry ) ) {
break;
}
if ( entry.moveType == MOVE_TYPE ) {
XP_U16 nTiles = entry.u.move.moveInfo.nTiles;
XP_U16 col, row;
XP_U16* varies;
if ( entry.u.move.moveInfo.isHorizontal ) {
row = entry.u.move.moveInfo.commonCoord;
varies = &col;
} else {
col = entry.u.move.moveInfo.commonCoord;
varies = &row;
}
while ( nTiles-- ) {
CellTile tile;
*varies = entry.u.move.moveInfo.tiles[nTiles].varCoord;
tile = getModelTileRaw( model, col, row );
setModelTileRaw( model, col, row,
(CellTile)(tile | PREV_MOVE_BIT) );
notifyBoardListeners( model, entry.playerNum, col, row,
XP_FALSE );
}
break;
} else if ( entry.moveType == ASSIGN_TYPE ) {
break;
} else {
--nStackEntries; /* look at the next one */
}
}
if ( nMovesUndone != nMovesSought ) {
success = XP_FALSE;
}
if ( success ) {
*turnP = turn;
*moveNumP = entry.moveNum;
} else {
while ( nMovesUndone-- ) {
stack_redo( stack );
}
}
return success;
} /* model_undoLatestMoves */
void
model_trayToStream( ModelCtxt* model, XP_S16 turn, XWStreamCtxt* stream )
{
PlayerCtxt* player = &model->players[turn];
traySetToStream( stream, &player->trayTiles );
} /* model_trayToStream */
void
model_currentMoveToStream( ModelCtxt* model, XP_S16 turn,
XWStreamCtxt* stream )
{
PlayerCtxt* player = &model->players[turn];
XP_S16 numTiles = player->nPending;
stream_putBits( stream, NTILES_NBITS, numTiles );
while ( numTiles-- ) {
Tile tile;
XP_U16 col, row;
XP_Bool isBlank;
model_getCurrentMoveTile( model, turn, &numTiles, &tile,
&col, &row, &isBlank );
XP_ASSERT( numTiles >= 0 );
stream_putBits( stream, TILE_NBITS, tile );
stream_putBits( stream, NUMCOLS_NBITS, col );
stream_putBits( stream, NUMCOLS_NBITS, row );
stream_putBits( stream, 1, isBlank );
}
} /* model_turnToStream */
/* Take stream as the source of info about what tiles to move from tray to
* board. Undo any current move first -- a player on this device might be
* using the board as scratch during another player's turn. For each tile,
* assert that it's in the tray, remove it from the tray, and place it on the
* board.
*/
void
model_makeTurnFromStream( ModelCtxt* model, XP_U16 playerNum,
XWStreamCtxt* stream )
{
XP_U16 numTiles;
Tile blank = dict_getBlankTile( model->vol.dict );
model_resetCurrentTurn( model, playerNum );
numTiles = (XP_U16)stream_getBits( stream, NTILES_NBITS );
XP_STATUSF( "model_makeTurnFromStream: numTiles=%d\n", numTiles );
while ( numTiles-- ) {
XP_S16 foundAt;
Tile moveTile;
Tile tileFace = (Tile)stream_getBits( stream, TILE_NBITS );
XP_U16 col = (XP_U16)stream_getBits( stream, NUMCOLS_NBITS );
XP_U16 row = (XP_U16)stream_getBits( stream, NUMCOLS_NBITS );
XP_Bool isBlank = stream_getBits( stream, 1 );
/* This code gets called both for the server, which has all the
tiles in its tray, and for a client, which has "EMPTY" tiles
only. If it's the empty case, we stuff a real tile into the
tray before falling through to the normal case */
if ( isBlank ) {
moveTile = blank;
} else {
moveTile = tileFace;
}
foundAt = model_trayContains( model, playerNum, moveTile );
if ( foundAt == -1 ) {
XP_ASSERT( EMPTY_TILE==model_getPlayerTile(model, playerNum, 0));
(void)model_removePlayerTile( model, playerNum, -1 );
model_addPlayerTile( model, playerNum, -1, moveTile );
}
model_moveTrayToBoard( model, playerNum, col, row, foundAt, tileFace);
}
} /* model_makeMoveFromStream */
void
model_makeTurnFromMoveInfo( ModelCtxt* model, XP_U16 playerNum,
MoveInfo* newMove )
{
XP_U16 col, row, i;
XP_U16* other;
MoveInfoTile* tinfo;
Tile blank;
XP_U16 numTiles;
blank = dict_getBlankTile( model->vol.dict );
numTiles = newMove->nTiles;
col = row = newMove->commonCoord; /* just assign both */
other = newMove->isHorizontal? &col: &row;
for ( tinfo = newMove->tiles, i = 0; i < numTiles; ++i, ++tinfo ) {
XP_S16 tileIndex;
Tile tile = tinfo->tile;
if ( IS_BLANK(tile) ) {
tile = blank;
}
tileIndex = model_trayContains( model, playerNum, tile );
XP_ASSERT( tileIndex >= 0 );
*other = tinfo->varCoord;
model_moveTrayToBoard( model, (XP_S16)playerNum, col, row, tileIndex,
(Tile)(tinfo->tile & TILE_VALUE_MASK) );
}
} /* model_makeTurnFromMoveInfo */
void
model_countAllTrayTiles( ModelCtxt* model, XP_U16* counts )
{
PlayerCtxt* player;
XP_U16 nPlayers = model->nPlayers;
Tile blank;
XP_ASSERT( !!model->vol.dict );
blank = dict_getBlankTile( model->vol.dict );
for ( player = model->players; nPlayers--; ++player ) {
XP_U16 nTiles = player->nPending;
PendingTile* pt;
Tile* tiles;
/* first the pending tiles */
for ( pt = player->pendingTiles; nTiles--; ++pt ) {
Tile tile = pt->tile;
if ( IS_BLANK(tile) ) {
tile = blank;
} else {
tile &= TILE_VALUE_MASK;
}
XP_ASSERT( tile <= MAX_UNIQUE_TILES );
++counts[tile];
}
/* then the tiles still in the tray */
nTiles = player->trayTiles.nTiles;
tiles = player->trayTiles.tiles;
while ( nTiles-- ) {
++counts[*tiles++];
}
}
} /* model_countAllTrayTiles */
XP_S16
model_trayContains( ModelCtxt* model, XP_S16 turn, Tile tile )
{
PlayerCtxt* player;
XP_S16 i;
XP_S16 result = -1;
XP_ASSERT( turn >= 0 );
XP_ASSERT( turn < model->nPlayers );
player = &model->players[turn];
/* search from top down so don't pull out of below divider */
for ( i = player->trayTiles.nTiles - 1; i >= 0 ; --i ) {
Tile playerTile = player->trayTiles.tiles[i];
if ( playerTile == tile ) {
result = i;
break;
}
}
return result;
} /* model_trayContains */
XP_U16
model_getCurrentMoveCount( ModelCtxt* model, XP_S16 turn )
{
PlayerCtxt* player;
XP_ASSERT( turn >= 0 );
player = &model->players[turn];
return player->nPending;
} /* model_getCurrentMoveCount */
void
model_getCurrentMoveTile( ModelCtxt* model, XP_S16 turn, XP_S16* index,
Tile* tile, XP_U16* col, XP_U16* row,
XP_Bool* isBlank )
{
PlayerCtxt* player;
PendingTile* pt;
XP_ASSERT( turn >= 0 );
player = &model->players[turn];
XP_ASSERT( *index < player->nPending );
if ( *index < 0 ) {
*index = player->nPending - 1;
}
pt = &player->pendingTiles[*index];
*col = pt->col;
*row = pt->row;
*isBlank = (pt->tile & TILE_BLANK_BIT) != 0;
*tile = pt->tile & TILE_VALUE_MASK;
} /* model_getCurrentMoveTile */
Tile
model_removePlayerTile( ModelCtxt* model, XP_S16 turn, XP_S16 index )
{
PlayerCtxt* player = &model->players[turn];
Tile tile;
short i;
TileBit bits = 0;
if ( index < 0 ) {
index = player->trayTiles.nTiles - 1;
} else {
XP_ASSERT( index < player->trayTiles.nTiles );
}
tile = player->trayTiles.tiles[index];
bits = 1 << index;
--player->trayTiles.nTiles;
for ( i = index; i < player->trayTiles.nTiles; ++i ) {
player->trayTiles.tiles[i] = player->trayTiles.tiles[i+1];
bits |= 3 << i;
}
notifyTrayListeners( model, turn, bits );
return tile;
} /* model_removePlayerTile */
void
model_packTilesUtil( ModelCtxt* model, PoolContext* pool,
XP_Bool includeBlank,
XP_U16* nUsed, XP_UCHAR4* texts,
Tile* tiles )
{
DictionaryCtxt* dict = model->vol.dict;
XP_U16 nFaces = dict_numTileFaces( dict );
Tile blankFace = dict_getBlankTile( dict );
Tile tile;
XP_U16 nFacesAvail = 0;
XP_ASSERT( nFaces <= *nUsed );
for ( tile = 0; tile < nFaces; ++tile ) {
XP_U16 nChars;
if ( includeBlank ) {
XP_ASSERT( !!pool );
if ( pool_getNTilesLeftFor( pool, tile ) == 0 ) {
continue;
}
} else if ( tile == blankFace ) {
continue;
}
tiles[nFacesAvail] = tile;
nChars = dict_tilesToString( dict, &tile, 1,
(XP_UCHAR*)&texts[nFacesAvail] );
XP_ASSERT( nChars < sizeof(texts[0]) );
++nFacesAvail;
}
*nUsed = nFacesAvail;
} /* model_packTilesUtil */
static Tile
askBlankTile( ModelCtxt* model, XP_U16 turn )
{
XP_U16 nUsed = MAX_UNIQUE_TILES;
XP_S16 chosen;
XP_UCHAR4 tfaces[MAX_UNIQUE_TILES];
Tile tiles[MAX_UNIQUE_TILES];
PickInfo pi;
pi.why = PICK_FOR_BLANK;
pi.nTotal = 1;
pi.thisPick = 1;
model_packTilesUtil( model, NULL, XP_FALSE,
&nUsed, tfaces, tiles );
chosen = util_userPickTile( model->vol.util, &pi,
turn, tfaces, nUsed );
if ( chosen < 0 ) {
chosen = 0;
}
return tiles[chosen];
} /* askBlankTile */
void
model_moveTrayToBoard( ModelCtxt* model, XP_S16 turn, XP_U16 col, XP_U16 row,
XP_S16 tileIndex, Tile blankFace )
{
PlayerCtxt* player;
PendingTile* pt;
Tile tile = model_removePlayerTile( model, turn, tileIndex );
if ( tile == dict_getBlankTile(model->vol.dict) ) {
if ( blankFace != EMPTY_TILE ) {
tile = blankFace;
} else {
XP_ASSERT( turn >= 0 );
tile = askBlankTile( model, (XP_U16)turn );
}
tile |= TILE_BLANK_BIT;
}
player = &model->players[turn];
if ( player->nPending == 0 ) {
invalLastMove( model );
}
pt = &player->pendingTiles[player->nPending++];
XP_ASSERT( player->nPending <= MAX_TRAY_TILES );
pt->tile = tile;
pt->col = (XP_U8)col;
pt->row = (XP_U8)row;
invalidateScore( model, turn );
incrPendingTileCountAt( model, col, row );
notifyBoardListeners( model, turn, col, row, XP_TRUE );
} /* model_moveTrayToBoard */
void
model_moveBoardToTray( ModelCtxt* model, XP_S16 turn, XP_S16 index )
{
PlayerCtxt* player;
short i;
PendingTile* pt;
Tile tile;
player = &model->players[turn];
if ( index < 0 ) {
index = player->nPending - 1;
}
pt = &player->pendingTiles[index];
decrPendingTileCountAt( model, pt->col, pt->row );
notifyBoardListeners( model, turn, pt->col, pt->row, XP_FALSE );
tile = pt->tile;
if ( (tile & TILE_BLANK_BIT) != 0 ) {
tile = dict_getBlankTile( model->vol.dict );
}
model_addPlayerTile( model, turn, -1, tile );
--player->nPending;
for ( i = index; i < player->nPending; ++i ) {
player->pendingTiles[i] = player->pendingTiles[i+1];
}
if ( player->nPending == 0 ) {
invalLastMove( model );
}
invalidateScore( model, turn );
} /* model_moveBoardToTray */
void
model_resetCurrentTurn( ModelCtxt* model, XP_S16 whose )
{
PlayerCtxt* player;
XP_ASSERT( whose >= 0 && whose < model->nPlayers );
player = &model->players[whose];
while ( player->nPending > 0 ) {
model_moveBoardToTray( model, whose, -1 );
}
} /* model_resetCurrentTurn */
static void
incrPendingTileCountAt( ModelCtxt* model, XP_U16 col, XP_U16 row )
{
XP_U16 val = getModelTileRaw( model, col, row );
if ( TILE_IS_EMPTY(val) ) {
val = 0;
} else {
XP_ASSERT( (val & TILE_PENDING_BIT) != 0 );
XP_ASSERT( (val & TILE_VALUE_MASK) > 0 );
}
++val;
XP_ASSERT( (val & TILE_VALUE_MASK) > 0 &&
(val & TILE_VALUE_MASK) <= MAX_NUM_PLAYERS );
setModelTileRaw( model, col, row, (CellTile)(val | TILE_PENDING_BIT) );
} /* incrPendingTileCountAt */
static void
setPendingCounts( ModelCtxt* model, XP_S16 turn )
{
PlayerCtxt* player = &model->players[turn];
PendingTile* pending = player->pendingTiles;
XP_U16 nPending;
for ( nPending = player->nPending; nPending--; ) {
incrPendingTileCountAt( model, pending->col, pending->row );
++pending;
}
} /* setPendingCounts */
static void
decrPendingTileCountAt( ModelCtxt* model, XP_U16 col, XP_U16 row )
{
XP_U16 val = getModelTileRaw( model, col, row );
/* for pending tiles, the value is defined in the players array, so what
we keep here is a refcount of how many players have put tiles there. */
val &= TILE_VALUE_MASK; /* the refcount */
XP_ASSERT( val <= MAX_NUM_PLAYERS && val > 0 );
if ( --val > 0 ) {
val |= TILE_PENDING_BIT;
} else {
val = EMPTY_TILE;
}
setModelTileRaw( model, col, row, val );
} /* decrPendingTileCountAt */
static void
putBackOtherPlayersTiles( ModelCtxt* model, XP_U16 notMyTurn,
XP_U16 col, XP_U16 row )
{
XP_S16 turn, j;
for ( turn = 0; turn < model->nPlayers; ++turn ) {
PlayerCtxt* player;
if ( turn == notMyTurn ) {
continue;
}
player = &model->players[turn];
for ( j = player->nPending-1; j >= 0; --j ) { /* backwards in case
removed */
PendingTile* pt = &player->pendingTiles[j];
if ( pt->col == col && pt->row == row ) {
/* this one needs to be put back */
model_moveBoardToTray( model, turn, j );
break; /* a player can have only one tile on a square */
}
}
}
} /* putBackOtherPlayersTiles */
/* Make those tiles placed by 'turn' a permanent part of the board. If any
* other players have placed pending tiles on those same squares, replace them
* in their trays.
*/
static XP_S16
commitTurn( ModelCtxt* model, XP_S16 turn, TrayTileSet* newTiles,
XWStreamCtxt* stream, XP_Bool useStack )
{
short i;
PlayerCtxt* player;
PendingTile* pt;
XP_S16 score;
XP_Bool inLine, isHorizontal;
Tile* newTilesP;
XP_U16 nTiles;
nTiles = newTiles->nTiles;
#ifdef DEBUG
XP_ASSERT( getCurrentMoveScoreIfLegal( model, turn, (XWStreamCtxt*)NULL,
&score ) );
invalidateScore( model, turn );
#endif
XP_ASSERT( turn >= 0 && turn < MAX_NUM_PLAYERS);
clearLastMoveInfo( model );
player = &model->players[turn];
if ( useStack ) {
MoveInfo moveInfo;
inLine = tilesInLine( model, turn, &isHorizontal );
XP_ASSERT( inLine );
normalizeMoves( model, turn, isHorizontal, &moveInfo );
stack_addMove( model->vol.stack, turn, &moveInfo, newTiles );
}
for ( i = 0, pt=player->pendingTiles; i < player->nPending; ++i, ++pt ) {
XP_U16 col, row;
CellTile tile;
XP_U16 val;
col = pt->col;
row = pt->row;
tile = getModelTileRaw( model, col, row );
XP_ASSERT( tile & TILE_PENDING_BIT );
val = tile & TILE_VALUE_MASK;
if ( val > 1 ) { /* somebody else is using this square too! */
putBackOtherPlayersTiles( model, turn, col, row );
}
tile = pt->tile;
tile |= PREV_MOVE_BIT;
tile |= turn << CELL_OWNER_OFFSET;
setModelTileRaw( model, col, row, tile );
notifyBoardListeners( model, turn, col, row, XP_FALSE );
}
(void)getCurrentMoveScoreIfLegal( model, turn, stream, &score );
XP_ASSERT( score >= 0 );
player->score += score;
/* Why is this next loop necessary? */
for ( i = 0; i < model->nPlayers; ++i ) {
invalidateScore( model, i );
}
player->nPending = 0;
newTilesP = newTiles->tiles;
while ( nTiles-- ) {
model_addPlayerTile( model, turn, -1, *newTilesP++ );
}
return score;
} /* commitTurn */
void
model_commitTurn( ModelCtxt* model, XP_S16 turn, TrayTileSet* newTiles )
{
(void)commitTurn( model, turn, newTiles, (XWStreamCtxt*)NULL, XP_TRUE );
} /* model_commitTurn */
/* Given a rack of new tiles and of old, remove all the old from the tray and
* replace them with new. Replace in the same place so that user sees an
* in-place change.
*/
static void
makeTileTrade( ModelCtxt* model, XP_S16 player, TrayTileSet* oldTiles,
TrayTileSet* newTiles )
{
XP_U16 i;
XP_U16 nTiles;
XP_ASSERT( newTiles->nTiles == oldTiles->nTiles );
for ( nTiles = newTiles->nTiles, i = 0; i < nTiles; ++i ) {
Tile oldTile = oldTiles->tiles[i];
XP_S16 tileIndex = model_trayContains( model, player, oldTile );
XP_ASSERT( tileIndex >= 0 );
model_removePlayerTile( model, player, tileIndex );
model_addPlayerTile( model, player, tileIndex, newTiles->tiles[i] );
}
} /* makeTileTrade */
void
model_makeTileTrade( ModelCtxt* model, XP_S16 player,
TrayTileSet* oldTiles, TrayTileSet* newTiles )
{
stack_addTrade( model->vol.stack, player, oldTiles, newTiles );
makeTileTrade( model, player, oldTiles, newTiles );
} /* model_makeTileTrade */
Tile
model_getPlayerTile( ModelCtxt* model, XP_S16 turn, XP_S16 index )
{
PlayerCtxt* player = &model->players[turn];
if ( index < 0 ) {
index = player->trayTiles.nTiles-1;
}
XP_ASSERT( index < player->trayTiles.nTiles );
return player->trayTiles.tiles[index];
} /* model_getPlayerTile */
const TrayTileSet*
model_getPlayerTiles( ModelCtxt* model, XP_S16 turn )
{
PlayerCtxt* player = &model->players[turn];
return (const TrayTileSet*)&player->trayTiles;
} /* model_getPlayerTile */
void
model_addPlayerTile( ModelCtxt* model, XP_S16 turn, XP_S16 index, Tile tile )
{
PlayerCtxt* player = &model->players[turn];
short i;
TileBit bits = 0;
XP_ASSERT( player->trayTiles.nTiles < MAX_TRAY_TILES );
if ( index < 0 ) {
index = player->trayTiles.nTiles;
}
/* move tiles up to make room */
for ( i = player->trayTiles.nTiles; i > index; --i ) {
player->trayTiles.tiles[i] = player->trayTiles.tiles[i-1];
bits |= (3 << (i-2));
}
++player->trayTiles.nTiles;
player->trayTiles.tiles[index] = tile;
bits |= (1 << index);
notifyTrayListeners( model, turn, bits );
} /* model_addPlayerTile */
static void
assignPlayerTiles( ModelCtxt* model, XP_S16 turn, TrayTileSet* tiles )
{
Tile* tilep = tiles->tiles;
XP_U16 nTiles = tiles->nTiles;
while ( nTiles-- ) {
model_addPlayerTile( model, turn, -1, *tilep++ );
}
} /* model_addPlayerTiles */
void
model_assignPlayerTiles( ModelCtxt* model, XP_S16 turn, TrayTileSet* tiles )
{
stack_addAssign( model->vol.stack, turn, tiles );
assignPlayerTiles( model, turn, tiles );
} /* model_addPlayerTiles */
XP_U16
model_getNumTilesInTray( ModelCtxt* model, XP_S16 turn )
{
PlayerCtxt* player = &model->players[turn];
return player->trayTiles.nTiles;
} /* model_getNumPlayerTiles */
XP_U16
model_getNumTilesTotal( ModelCtxt* model, XP_S16 turn )
{
PlayerCtxt* player = &model->players[turn];
return player->trayTiles.nTiles + player->nPending;
} /* model_getNumTilesTotal */
XP_U16
model_numRows( ModelCtxt* model )
{
return model->nRows;
} /* model_numRows */
XP_U16
model_numCols( ModelCtxt* model )
{
return model->nCols;
} /* model_numCols */
void
model_setBoardListener( ModelCtxt* model, BoardListener bl, void* data )
{
model->vol.boardListenerFunc = bl;
model->vol.boardListenerData = data;
} /* model_setBoardListener */
void
model_setTrayListener( ModelCtxt* model, TrayListener tl, void* data )
{
model->vol.trayListenerFunc = tl;
model->vol.trayListenerData = data;
} /* model_setBoardListener */
static void
notifyBoardListeners( ModelCtxt* model, XP_U16 turn, XP_U16 col, XP_U16 row,
XP_Bool added )
{
if ( model->vol.boardListenerFunc != NULL ) {
(*model->vol.boardListenerFunc)( model->vol.boardListenerData, turn,
col, row, added );
}
} /* notifyBoardListeners */
static void
notifyTrayListeners( ModelCtxt* model, XP_U16 turn, TileBit bits )
{
if ( model->vol.trayListenerFunc != NULL ) {
(*model->vol.trayListenerFunc)( model->vol.trayListenerData, turn,
bits );
}
} /* notifyTrayListeners */
static void
printString( XWStreamCtxt* stream, XP_UCHAR* str )
{
stream_putBytes( stream, str, (XP_U16)XP_STRLEN((char*)str) );
} /* printString */
static XP_UCHAR*
formatTray( const TrayTileSet* tiles, DictionaryCtxt* dict, XP_UCHAR* buf,
XP_Bool keepHidden )
{
if ( keepHidden ) {
XP_U16 i;
for ( i = 0; i < tiles->nTiles; ++i ) {
buf[i] = '?';
}
buf[i] = '\0';
} else {
dict_tilesToString( dict, (Tile*)tiles->tiles, tiles->nTiles, buf );
}
return buf;
} /* formatTray */
typedef struct MovePrintClosure {
XWStreamCtxt* stream;
DictionaryCtxt* dict;
XP_U16 nPrinted;
XP_Bool keepHidden;
} MovePrintClosure;
static void
printMovePre( ModelCtxt* model, XP_U16 moveN, StackEntry* entry,
void* p_closure )
{
XWStreamCtxt* stream;
XP_UCHAR* format;
XP_UCHAR buf[32];
XP_UCHAR traybuf[MAX_TRAY_TILES+1];
MovePrintClosure* closure = (MovePrintClosure*)p_closure;
if ( entry->moveType == ASSIGN_TYPE ) {
return;
}
stream = closure->stream;
XP_SNPRINTF( buf, sizeof(buf), (XP_UCHAR*)"%d:%d ", ++closure->nPrinted,
entry->playerNum+1 );
printString( stream, (XP_UCHAR*)buf );
if ( entry->moveType == TRADE_TYPE ) {
} else {
XP_UCHAR letter[2] = {'\0','\0'};
XP_Bool isHorizontal = entry->u.move.moveInfo.isHorizontal;
XP_U16 col, row;
MoveInfo* mi;
XP_Bool isPass = XP_FALSE;
if ( entry->moveType == PHONY_TYPE ) {
mi = &entry->u.phony.moveInfo;
} else {
mi = &entry->u.move.moveInfo;
if ( mi->nTiles == 0 ) {
isPass = XP_TRUE;
}
}
if ( isPass ) {
format = util_getUserString( model->vol.util, STR_PASS );
XP_SNPRINTF( buf, sizeof(buf), format );
} else {
if ( isHorizontal ) {
format = util_getUserString( model->vol.util, STRS_MOVE_ACROSS );
} else {
format = util_getUserString( model->vol.util, STRS_MOVE_DOWN );
}
row = mi->commonCoord;
col = mi->tiles[0].varCoord;
if ( !isHorizontal ) {
XP_U16 tmp = col; col = row; row = tmp;
}
letter[0] = 'A' + col;
XP_SNPRINTF( traybuf, sizeof(traybuf), (XP_UCHAR *)"%s%d",
letter, row + 1 );
XP_SNPRINTF( buf, sizeof(buf), format, traybuf );
}
printString( stream, (XP_UCHAR*)buf );
}
if ( !closure->keepHidden ) {
format = util_getUserString( model->vol.util, STRS_TRAY_AT_START );
formatTray( model_getPlayerTiles( model,
entry->playerNum ),
closure->dict, (XP_UCHAR*)traybuf, XP_FALSE );
XP_SNPRINTF( buf, sizeof(buf), format, traybuf );
printString( stream, buf );
}
} /* printMovePre */
static void
printMovePost( ModelCtxt* model, XP_U16 moveN, StackEntry* entry,
XP_S16 score, void* p_closure )
{
MovePrintClosure* closure = (MovePrintClosure*)p_closure;
XWStreamCtxt* stream = closure->stream;
DictionaryCtxt* dict = closure->dict;
XP_UCHAR* format;
XP_U16 nTiles;
XP_S16 totalScore;
XP_UCHAR buf[100];
XP_UCHAR traybuf1[MAX_TRAY_TILES+1];
XP_UCHAR traybuf2[MAX_TRAY_TILES+1];
MoveInfo* mi;
if ( entry->moveType == ASSIGN_TYPE ) {
return;
}
totalScore = model_getPlayerScore( model, entry->playerNum );
switch( entry->moveType ) {
case TRADE_TYPE:
formatTray( (const TrayTileSet*)&entry->u.trade.oldTiles,
dict, traybuf1, closure->keepHidden );
formatTray( (const TrayTileSet*) &entry->u.trade.newTiles,
dict, traybuf2, closure->keepHidden );
format = util_getUserString( model->vol.util, STRSS_TRADED_FOR );
XP_SNPRINTF( buf, sizeof(buf), format, traybuf1, traybuf2 );
printString( stream, buf );
printString( stream, (XP_UCHAR*)XP_CR );
break;
case PHONY_TYPE:
format = util_getUserString( model->vol.util, STR_PHONY_REJECTED );
printString( stream, format );
case MOVE_TYPE:
format = util_getUserString( model->vol.util, STRD_CUMULATIVE_SCORE );
XP_SNPRINTF( buf, sizeof(buf), format, totalScore );
printString( stream, buf );
if ( entry->moveType == PHONY_TYPE ) {
mi = &entry->u.phony.moveInfo;
} else {
mi = &entry->u.move.moveInfo;
}
nTiles = mi->nTiles;
if ( nTiles > 0 ) {
if ( entry->moveType == PHONY_TYPE ) {
/* printString( stream, (XP_UCHAR*)"phony rejected " ); */
} else if ( !closure->keepHidden ) {
format = util_getUserString(model->vol.util, STRS_NEW_TILES);
XP_SNPRINTF( buf, sizeof(buf), format,
formatTray( &entry->u.move.newTiles, dict,
traybuf1, XP_FALSE ) );
printString( stream, buf );
}
}
break;
}
printString( stream, (XP_UCHAR*)XP_CR );
} /* printMovePost */
static ModelCtxt*
makeTmpModel( ModelCtxt* model, XWStreamCtxt* stream,
MovePrintFuncPre mpf_pre, MovePrintFuncPost mpf_post,
void* closure )
{
ModelCtxt* tmpModel = model_make( MPPARM(model->vol.mpool)
model_getDictionary(model),
model->vol.util, model_numCols(model),
model_numRows(model));
model_setNPlayers( tmpModel, model->nPlayers );
buildModelFromStack( tmpModel, model->vol.stack, stream,
mpf_pre, mpf_post, closure );
return tmpModel;
} /* makeTmpModel */
void
model_writeGameHistory( ModelCtxt* model, XWStreamCtxt* stream,
ServerCtxt* server, XP_Bool gameOver )
{
ModelCtxt* tmpModel;
MovePrintClosure closure;
closure.stream = stream;
closure.dict = model_getDictionary( model );
closure.keepHidden = !gameOver;
closure.nPrinted = 0;
tmpModel = makeTmpModel( model, stream, printMovePre, printMovePost,
&closure );
if ( gameOver ) {
/* if the game's over, it shouldn't matter which model I pass to this
method */
server_writeFinalScores( server, stream );
}
model_destroy( tmpModel );
} /* model_writeGameHistory */
static void
scoreLastMove( ModelCtxt* model, MoveInfo* moveInfo, XP_U16 howMany,
XP_UCHAR* buf, XP_U16* bufLen )
{
if ( moveInfo->nTiles == 0 ) {
XP_UCHAR* str = util_getUserString( model->vol.util, STR_PASSED );
*bufLen = XP_STRLEN( str );
XP_STRCAT( buf, str );
} else {
XP_U16 score;
XP_UCHAR wordBuf[MAX_ROWS+1];
XP_UCHAR* format;
ModelCtxt* tmpModel = makeTmpModel( model, NULL, NULL, NULL, NULL );
XP_U16 turn;
XP_S16 moveNum;
model_undoLatestMoves( tmpModel, NULL, howMany, &turn, &moveNum );
score = figureMoveScore( tmpModel, moveInfo, (EngineCtxt*)NULL,
(XWStreamCtxt*)NULL, XP_TRUE,
(WordNotifierInfo*)NULL, wordBuf );
model_destroy( tmpModel );
format = util_getUserString( model->vol.util, STRSD_SUMMARYSCORED );
*bufLen = XP_SNPRINTF( buf, *bufLen, format, wordBuf, score );
}
} /* scoreLastMove */
XP_Bool
model_getPlayersLastScore( ModelCtxt* model, XP_S16 player,
XP_UCHAR* expl, XP_U16* explLen )
{
StackCtxt* stack = model->vol.stack;
XP_S16 nEntries, which;
StackEntry entry;
XP_Bool found = XP_FALSE;
XP_ASSERT( !!stack );
XP_ASSERT( player >= 0 );
nEntries = stack_getNEntries( stack );
for ( which = nEntries; which >= 0; ) {
if ( stack_getNthEntry( stack, --which, &entry ) ) {
if ( entry.playerNum == player ) {
found = XP_TRUE;
break;
}
}
}
if ( found ) { /* success? */
XP_UCHAR* format;
XP_U16 nTiles;
switch ( entry.moveType ) {
case MOVE_TYPE:
scoreLastMove( model, &entry.u.move.moveInfo, nEntries - which, expl, explLen );
break;
case TRADE_TYPE:
nTiles = entry.u.trade.oldTiles.nTiles;
format = util_getUserString( model->vol.util, STRD_TRADED );
*explLen = XP_SNPRINTF( expl, *explLen, format, nTiles );
break;
case PHONY_TYPE:
format = util_getUserString( model->vol.util, STR_LOSTTURN );
*explLen = XP_STRLEN( format );
XP_STRCAT( expl, format );
break;
case ASSIGN_TYPE:
found = XP_FALSE;
break;
}
}
return found;
} /* model_getPlayersLastScore */
static void
loadPlayerCtxt( XWStreamCtxt* stream, PlayerCtxt* pc )
{
XP_U16 i;
pc->curMoveValid = stream_getBits( stream, 1 );
traySetFromStream( stream, &pc->trayTiles );
pc->nPending = (XP_U8)stream_getBits( stream, NTILES_NBITS );
for ( i = 0; i < pc->nPending; ++i ) {
PendingTile* pt = &pc->pendingTiles[i];
pt->col = (XP_U8)stream_getBits( stream, NUMCOLS_NBITS );
pt->row = (XP_U8)stream_getBits( stream, NUMCOLS_NBITS );
pt->tile = (Tile)stream_getBits( stream, 6 );
}
} /* loadPlayerCtxt */
static void
writePlayerCtxt( XWStreamCtxt* stream, PlayerCtxt* pc )
{
XP_U16 i;
stream_putBits( stream, 1, pc->curMoveValid );
traySetToStream( stream, &pc->trayTiles );
stream_putBits( stream, NTILES_NBITS, pc->nPending );
for ( i = 0; i < pc->nPending; ++i ) {
PendingTile* pt = &pc->pendingTiles[i];
stream_putBits( stream, NUMCOLS_NBITS, pt->col );
stream_putBits( stream, NUMCOLS_NBITS, pt->row );
stream_putBits( stream, 6, pt->tile );
}
} /* loadPlayerCtxt */
#ifdef CPLUS
}
#endif
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