ref: db3b70f1424dfd8c5ea45206790df066c53bfab0
dir: /appl/spree/engines/freecell.b/
implement Gatherengine;
include "sys.m";
sys: Sys;
include "draw.m";
include "sets.m";
sets: Sets;
Set, set, A, B, All, None: import sets;
include "../spree.m";
spree: Spree;
Attributes, Range, Object, Clique, Member, rand: import spree;
include "allow.m";
allow: Allow;
include "cardlib.m";
cardlib: Cardlib;
Selection, Cmember, Card: import cardlib;
getcard: import cardlib;
dTOP, dRIGHT, dLEFT, oRIGHT, oDOWN,
aCENTRERIGHT, aCENTRELEFT, aUPPERRIGHT,
EXPAND, FILLX, FILLY, Stackspec: import Cardlib;
include "../gather.m";
clique: ref Clique;
open: array of ref Object; # [8]
cells: array of ref Object; # [4]
acepiles: array of ref Object; # [4]
txpiles: array of ref Object; # [len open + len cells]
deck: ref Object;
fnames := array[] of {
"qua",
"quack",
"quackery",
"quad",
"quadrangle",
"quadrangular",
"quadrant",
"quadratic",
"quadrature",
"quadrennial",
};
dir(name: string, perm: int, owner: string): Sys->Dir
{
d := Sys->zerodir;
d.name = name;
d.uid = owner;
d.gid = owner;
d.qid.qtype = (perm >> 24) & 16rff;
d.mode = perm;
# d.atime = now;
# d.mtime = now;
return d;
}
suitsout := array[4] of {* => -1};
mainmember: ref Cmember;
CLICK: con iota;
Openspec := Stackspec(
"display", # style
19, # maxcards
0, # conceal
"" # title
);
Pilespec := Stackspec(
"pile", # style
19, # maxcards
0, # conceal
"pile" # title
);
Untitledpilespec := Stackspec(
"pile", # style
13, # maxcards
0, # conceal
"" # title
);
clienttype(): string
{
return "cards";
}
maxmembers(): int
{
return 1;
}
init(srvmod: Spree, g: ref Clique, nil: list of string, nil: int): string
{
sys = load Sys Sys->PATH;
clique = g;
spree = srvmod;
allow = load Allow Allow->PATH;
if (allow == nil) {
sys->print("whist: cannot load %s: %r\n", Allow->PATH);
return "bad module";
}
allow->init(spree, clique);
sets = load Sets Sets->PATH;
if (sets == nil) {
sys->print("whist: cannot load %s: %r\n", Sets->PATH);
return "bad module";
}
cardlib = load Cardlib Cardlib->PATH;
if (cardlib == nil) {
sys->print("whist: cannot load %s: %r\n", Cardlib->PATH);
return "bad module";
}
cardlib->init(spree, clique);
g.fcreate(0, -1, dir("data", 8r555|Sys->DMDIR, "spree"));
for(i := 0; i < len fnames; i++)
g.fcreate(i + 1, 0, dir(fnames[i], 8r444, "arble"));
return nil;
}
propose(members: array of string): string
{
if (len members != 1)
return "one member only";
return nil;
}
start(members: array of ref Member, archived: int)
{
sys->print("freecell: starting\n");
if (archived) {
archiveobj := cardlib->unarchive();
open = cardlib->getarchivearray("open");
cells = cardlib->getarchivearray("cells");
acepiles = cardlib->getarchivearray("acepiles");
txpiles = cardlib->getarchivearray("txpiles");
deck = cardlib->getarchiveobj("deck");
for (i := 0; i < len suitsout; i++)
suitsout[i] = int archiveobj.getattr("suitsout" + string i);
mainmember = Cmember.findid(int archiveobj.getattr("mainmember"));
allow->unarchive(archiveobj);
archiveobj.delete();
} else {
sys->print("freecell: starting afresh\n");
mainmember = Cmember.join(members[0], -1);
mainmember.layout.lay.setvisibility(All);
startclique();
movefree();
allow->add(CLICK, members[0], "click %o %d");
}
}
readfile(f: int, boffset: big, n: int): array of byte
{
offset := int boffset;
f--;
if (f < 0 || f >= len fnames)
return nil;
data := array of byte fnames[f];
if (offset >= len data)
return nil;
if (offset + n > len data)
n = len data - offset;
return data[offset:offset + n];
}
archive()
{
sys->print("freecell: archiving\n");
archiveobj := cardlib->archive();
cardlib->archivearray(open, "open");
cardlib->archivearray(cells, "cells");
cardlib->archivearray(acepiles, "acepiles");
cardlib->archivearray(txpiles, "txpiles");
cardlib->setarchivename(deck, "deck");
for (i := 0; i < len suitsout; i++)
archiveobj.setattr("suitsout" + string i, string suitsout[i], None);
archiveobj.setattr("mainmember", string mainmember.id, None);
allow->archive(archiveobj);
}
command(p: ref Member, cmd: string): string
{
(err, tag, toks) := allow->action(p, cmd);
if (err != nil)
return err;
cp := Cmember.find(p);
if (cp == nil)
return "you are not playing";
case tag {
CLICK =>
# click stack index
stack := clique.objects[int hd tl toks];
nc := len stack.children;
idx := int hd tl tl toks;
sel := cp.sel;
stype := stack.getattr("type");
if (sel.isempty() || sel.stack == stack) {
if (idx < 0 || idx >= len stack.children)
return "invalid index";
case stype {
"cell" or
"open" =>
select(cp, stack, (idx, nc));
* =>
return "you can't move cards from there";
}
} else {
from := sel.stack;
case stype {
"acepile" =>
if (sel.r.end != sel.r.start + 1)
return "only one card at a time!";
addtoacepile(sel.stack);
sel.set(nil);
movefree();
"open" =>
c := getcard(sel.stack.children[sel.r.start]);
col := !isred(c.suit);
n := c.number + 1;
for (i := sel.r.start; i < sel.r.end; i++) {
c2 := getcard(sel.stack.children[i]);
if (isred(c2.suit) == col)
return "bad colour sequence";
if (c2.number != n - 1)
return "bad number sequence";
n = c2.number;
col = isred(c2.suit);
}
if (nc != 0) {
c2 := getcard(stack.children[nc - 1]);
if (isred(c2.suit) == isred(c.suit) || c2.number != c.number + 1)
return "opposite colours, descending, only";
}
r := sel.r;
selstack := sel.stack;
sel.set(nil);
fc := freecells(stack);
if (r.end - r.start - 1 > len fc)
return "not enough free cells";
n = 0;
for (i = r.end - 1; i >= r.start + 1; i--)
selstack.transfer((i, i + 1), fc[n++], -1);
selstack.transfer((i, i + 1), stack, -1);
while (--n >= 0)
fc[n].transfer((0, 1), stack, -1);
movefree();
"cell" =>
if (sel.r.end - sel.r.start > 1 || nc > 0)
return "only one card allowed there";
sel.transfer(stack, -1);
movefree();
* =>
return "can't move there";
}
}
}
return nil;
}
freecells(dest: ref Object): array of ref Object
{
fc := array[len txpiles] of ref Object;
n := 0;
for (i := 0; i < len txpiles; i++)
if (len txpiles[i].children == 0 && txpiles[i] != dest)
fc[n++] = txpiles[i];
return fc[0:n];
}
# move any cards that can be moved.
movefree()
{
nmoved := 1;
while (nmoved > 0) {
nmoved = 0;
for (i := 0; i < len txpiles; i++) {
pile := txpiles[i];
nc := len pile.children;
if (nc == 0)
continue;
card := getcard(pile.children[nc - 1]);
if (suitsout[card.suit] != card.number - 1)
continue;
# card can be moved; now make sure there's no card out
# that might be moved onto this card
for (j := 0; j < len suitsout; j++)
if (isred(j) != isred(card.suit) && card.number > 1 && suitsout[j] < card.number - 1)
break;
if (j == len suitsout) {
addtoacepile(pile);
nmoved++;
}
}
}
}
addtoacepile(pile: ref Object)
{
nc := len pile.children;
if (nc == 0)
return;
card := getcard(pile.children[nc - 1]);
for (i := 0; i < len acepiles; i++) {
anc := len acepiles[i].children;
if (anc == 0) {
if (card.number == 0)
break;
continue;
}
acard := getcard(acepiles[i].children[anc - 1]);
if (acard.suit == card.suit && acard.number == card.number - 1)
break;
}
if (i < len acepiles) {
pile.transfer((nc - 1, nc), acepiles[i], -1);
suitsout[card.suit] = card.number;
}
}
startclique()
{
addlayobj, addlayframe: import cardlib;
open = array[8] of {* => newstack(nil, Openspec, "open", nil)};
acepiles = array[4] of {* => newstack(nil, Untitledpilespec, "acepile", nil)};
cells = array[4] of {* => newstack(nil, Untitledpilespec, "cell", "cell")};
for (i := 0; i < len cells; i++)
cells[i].setattr("showsize", "0", All);
txpiles = array[12] of ref Object;
txpiles[0:] = open;
txpiles[len open:] = cells;
deck = clique.newobject(nil, All, "stack");
cardlib->makecards(deck, (0, 13), nil);
addlayframe("arena", nil, nil, dTOP|EXPAND|FILLX|FILLY, dTOP);
addlayframe("top", "arena", nil, dTOP|EXPAND, dTOP);
addlayframe("bot", "arena", nil, dTOP|EXPAND, dTOP);
for (i = 0; i < 4; i++)
addlayobj(nil, "top", nil, dRIGHT, acepiles[i]);
for (i = 0; i < 4; i++)
addlayobj(nil, "top", nil, dLEFT, cells[i]);
for (i = 0; i < len open; i++)
addlayobj(nil, "bot", nil, dLEFT|oDOWN|EXPAND, open[i]);
deal();
}
deal()
{
cardlib->shuffle(deck);
cardlib->deal(deck, 7, open, 0);
}
newstack(parent: ref Object, spec: Stackspec, stype, title: string): ref Object
{
stack := cardlib->newstack(parent, nil, spec);
stack.setattr("type", stype, None);
stack.setattr("actions", "click", All);
stack.setattr("title", title, All);
return stack;
}
isred(suit: int): int
{
return suit == Cardlib->DIAMONDS || suit == Cardlib->HEARTS;
}
select(cp: ref Cmember, stack: ref Object, r: Range)
{
if (cp.sel.isempty()) {
cp.sel.set(stack);
cp.sel.setrange(r);
} else {
if (cp.sel.r.start == r.start && cp.sel.r.end == r.end)
cp.sel.set(nil);
else
cp.sel.setrange(r);
}
}
#randstate := 1;
#srand(seed: int)
#{
# randstate = seed;
#}
#
#rand(): int
#{
# randstate = randstate * 214013 + 2531011;
# return (randstate >> 16) & 0x7fff;
#}
##From: jimh@MICROSOFT.com (Jim Horne)
##
##I'm happy to share the card shuffle algorithm, but I warn you,
##it does depend on the rand() and srand() function built into MS
##compilers. The good news is that I believe these work the same
##for all our compilers.
##
##I use cards.dll which has it's own mapping of numbers (0-51) to
##cards. The following will give you the idea. Play around with
##this and you'll be able to generate all the cliques.
##
##Go ahead and post the code. People might as well have fun with it.
##Please keep me posted on anything interesting that comes of it.
##Thanks.
#
#msdeal(cliquenumber: int): array of array of Card
#{
# deck := array[52] of Card;
# for (i := 0; i < len deck; i++) # put unique card in each deck loc.
# deck[i] = Card(i % 4, i / 4, 0);
# wleft := 52; # cards left to be chosen in shuffle
# cards := array[8] of {* => array[7] of Card};
# max := array[8] of {* => 0};
# srand(cliquenumber);
# for (i = 0; i < 52; i++) {
# j := rand() % wleft;
# card[i % 8][i / 8] = deck[j];
# max[i % 8] = i / 8;
# deck[j] = deck[--wleft];
# }
# for (i = 0; i < len cards; i++)
# cards[i] = cards[i][0:max[i]];
# return cards;
#}