ref: e047274e8dedebb9588a82e48e6cd9d7e50cae79
dir: /appl/spree/engines/spit.b/
implement Gatherengine;
include "sys.m";
sys: Sys;
include "draw.m";
include "sets.m";
sets: Sets;
Set, All, None, A, B: 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;
dTOP, dLEFT, dBOTTOM, oDOWN, EXPAND, FILLX, FILLY, aCENTRELEFT, Stackspec: import Cardlib;
include "../gather.m";
clique: ref Clique;
CLICK, SPIT, SAY, SHOW: con iota;
playing := 0;
dealt := 0;
deck: ref Object;
buttons: ref Object;
winner: ref Member;
Dmember: adt {
spare: ref Object;
row: array of ref Object;
centre: ref Object;
};
dmembers := array[2] of ref Dmember;
Openspec := Stackspec(
"display", # style
4, # maxcards
0, # conceal
"" # title
);
Pilespec := Stackspec(
"pile", # style
13, # maxcards
0, # conceal
"pile" # title
);
Untitledpilespec := Stackspec(
"pile", # style
13, # maxcards
0, # conceal
"" # title
);
clienttype(): string
{
return "cards";
}
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("spit: cannot load %s: %r\n", Allow->PATH);
return "bad module";
}
allow->init(spree, clique);
sets = load Sets Sets->PATH;
if (sets == nil) {
sys->print("spit: cannot load %s: %r\n", Sets->PATH);
return "bad module";
}
sets->init();
cardlib = load Cardlib Cardlib->PATH;
if (cardlib == nil) {
sys->print("spit: cannot load %s: %r\n", Cardlib->PATH);
return "bad module";
}
cardlib->init(spree, clique);
return nil;
}
maxmembers(): int
{
return 2;
}
readfile(nil: int, nil: big, nil: int): array of byte
{
return nil;
}
propose(members: array of string): string
{
if (len members != 2)
return "need exactly two members";
return nil;
}
archive()
{
archiveobj := cardlib->archive();
allow->archive(archiveobj);
for (i := 0; i < len dmembers; i++) {
dp := dmembers[i];
s := "d" + string i + "_";
cardlib->setarchivename(dp.spare, s + "spare");
cardlib->setarchivename(dp.centre, s + "centre");
for (j := 0; j < len dp.row; j++)
cardlib->setarchivename(dp.row[j], s + "row" + string j);
}
archiveobj.setattr("playing", string playing, None);
archiveobj.setattr("dealt", string dealt, None);
cardlib->setarchivename(deck, "deck");
}
start(members: array of ref Member, archived: int)
{
cardlib->init(spree, clique);
if (archived) {
archiveobj := cardlib->unarchive();
allow->unarchive(archiveobj);
playing = int archiveobj.getattr("playing");
dealt = int archiveobj.getattr("dealt");
deck = cardlib->getarchiveobj("deck");
for (i := 0; i < len dmembers; i++) {
dp := dmembers[i] = ref Dmember;
s := "d" + string i + "_";
dp.spare = cardlib->getarchiveobj(s + "spare");
dp.centre = cardlib->getarchiveobj(s + "centre");
dp.row = array[4] of ref Object;
for (j := 0; j < len dp.row; j++)
dp.row[j] = cardlib->getarchiveobj(s + "row" + string j);
}
} else {
buttons = clique.newobject(nil, All, "buttons");
pset := None;
for (i := 0; i < len members; i++) {
Cmember.join(members[i], i);
pset = pset.add(members[i].id);
}
# member 0 layout visible to member 0 and everyone else but other member.
# could be All.del(members[1].id) but doing it this way extends to many-member cliques.
Cmember.index(0).layout.lay.setvisibility(All.X(A&~B, pset).add(members[0].id));
layout();
deal();
dealt = 1;
playing = 0;
allow->add(SPIT, nil, "spit");
allow->add(SAY, nil, "say &");
allow->add(SHOW, nil, "show");
}
}
command(p: ref Member, cmd: string): string
{
(err, tag, toks) := allow->action(p, cmd);
if (err != nil){
if(winner != nil){
if(winner == p)
return "game has finished: you have won";
return "game has finished: you have lost";
}
return err;
}
cp := Cmember.find(p);
if (cp == nil)
return "you're only watching";
case tag {
SPIT =>
if (!dealt) {
deal();
dealt = 1;
} else if (!playing) {
go();
allow->add(CLICK, nil, "click %o %d");
playing = 1;
} else if (!canplay(!cp.ord)) {
go();
} else
return "it is possible to play";
CLICK =>
stack := clique.objects[int hd tl toks];
nc := len stack.children;
idx := int hd tl tl toks;
sel := cp.sel;
stype := stack.getattr("type");
d := dmembers[cp.ord];
if (sel.isempty() || sel.stack == stack) {
# selecting a card to move
if (idx < 0 || idx >= len stack.children)
return "invalid index";
if (owner(stack) != cp)
return "not yours, don't touch!";
case stype {
"row" =>
card := getcard(stack.children[nc - 1]);
if (card.face == 0)
cardlib->setface(stack.children[nc - 1], 1);
else
select(cp, stack, (nc - 1, nc));
* =>
return "you can't move cards from there";
}
} else {
# selecting a stack to move to.
case stype {
"centre" =>
card := getcard(sel.stack.children[sel.r.start]);
onto := getcard(stack.children[nc - 1]);
if ((card.number + 1) % 13 != onto.number &&
(card.number + 12) % 13 != onto.number) {
sel.set(nil);
return "out of sequence";
}
sel.transfer(stack, -1);
for (i := 0; i < len d.row; i++)
if (len d.row[i].children > 0)
break;
if (i == len d.row) {
if (len d.spare.children == 0) {
remark(p.name + " has won");
winner = p;
allow->del(CLICK, nil);
allow->del(SPIT, nil);
clearsel();
} else
finish(cp);
}
"row" =>
if (owner(stack) != cp) {
sel.set(nil);
return "not yours, don't touch!";
}
if (nc != 0) {
sel.set(nil);
return "cannot stack cards";
}
sel.transfer(stack, -1);
* =>
sel.set(nil);
return "can't move there";
}
}
SAY =>
clique.action("say member " + string p.id + ": '" + concat(tl toks) + "'", nil, nil, All);
SHOW =>
clique.show(nil);
}
return nil;
}
canplay(ord: int): int
{
d := dmembers[ord];
nmulti := nfree := 0;
for (j := 0; j < len d.row; j++) {
s1 := d.row[j];
if (len s1.children > 0) {
nmulti += len s1.children > 1;
card1 := getcard(s1.children[len s1.children - 1]);
for (k := 0; k < 2; k++) {
s2 := dmembers[k].centre;
if (len s2.children > 0) {
card2 := getcard(s2.children[len s2.children - 1]);
if ((card1.number + 1) % 13 == card2.number ||
(card1.number + 12) % 13 == card2.number)
return 1;
}
}
} else
nfree++;
}
return nmulti > 0 && nfree > 0;
}
bottomdiscard(src, dst: ref Object)
{
cardlib->flip(src);
for (i := 0; i < len src.children; i++)
cardlib->setface(src.children[i], 0);
src.transfer((0, len src.children), dst, 0);
}
finish(winner: ref Cmember)
{
loser := dmembers[!winner.ord];
for (i := 0; i < 2; i++) {
d := dmembers[i];
bottomdiscard(d.centre, loser.spare);
for (j := 0; j < len d.row; j++)
bottomdiscard(d.row[j], loser.spare);
}
playing = 0;
dealt = 0;
allow->del(CLICK, nil);
allow->add(SPIT, nil, "spit");
clearsel();
}
go()
{
for (i := 0; i < 2; i++) {
d := dmembers[i];
n := len d.spare.children;
if (n > 0)
d.spare.transfer((n - 1, n), d.centre, -1);
else if ((m := len dmembers[!i].spare.children) > 0)
dmembers[!i].spare.transfer((m - 1, m), d.centre, -1);
else {
# both members' spare piles are used up; use central piles instead
for (j := 0; j < 2; j++) {
cardlib->discard(dmembers[j].centre, dmembers[j].spare, 0);
cardlib->flip(dmembers[j].spare);
}
go();
return;
}
cardlib->setface(d.centre.children[len d.centre.children - 1], 1);
}
}
getcard(card: ref Object): Card
{
return cardlib->getcard(card);
}
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);
}
}
owner(stack: ref Object): ref Cmember
{
parent := clique.objects[stack.parentid];
n := cardlib->nmembers();
for (i := 0; i < n; i++) {
cp := Cmember.index(i);
if (cp.obj == parent)
return cp;
}
return nil;
}
layout()
{
for (i := 0; i < 2; i++) {
cp := Cmember.index(i);
d := dmembers[i] = ref Dmember;
d.spare = newstack(cp.obj, Untitledpilespec, "spare");
d.row = array[4] of {* => newstack(cp.obj, Openspec, "row")};
d.centre = newstack(cp.obj, Untitledpilespec, "centre");
}
deck = clique.newobject(nil, All, "stack");
cardlib->makecards(deck, (0, 13), "0");
cardlib->shuffle(deck);
entry := clique.newobject(nil, All, "widget entry");
entry.setattr("command", "say", All);
cardlib->addlayobj(nil, nil, nil, dTOP|FILLX, entry);
cardlib->addlayframe("arena", nil, nil, dTOP|EXPAND|FILLX|FILLY, dTOP);
maketable("arena");
spitbutton := newbutton("spit", "Spit!");
for (i = 0; i < 2; i++) {
d := dmembers[i];
f := "p" + string i;
subf := "f" + string i;
cardlib->addlayframe(subf, f, nil, dLEFT, dTOP);
cardlib->addlayobj(nil, subf, Cmember.index(i).layout, dTOP, spitbutton);
cardlib->addlayobj(nil, subf, nil, dTOP, d.spare);
for (j := 0; j < len d.row; j++)
cardlib->addlayobj(nil, f, nil, dLEFT|EXPAND|oDOWN, d.row[j]);
cardlib->addlayobj(nil, "centre", nil, dLEFT|EXPAND, d.centre);
}
}
newbutton(cmd, text: string): ref Object
{
but := clique.newobject(nil, All, "widget button");
but.setattr("command", cmd, All);
but.setattr("text", text, All);
return but;
}
settopface(stack: ref Object, face: int)
{
n := len stack.children;
if (n > 0)
cardlib->setface(stack.children[n - 1], face);
}
transfertop(src, dst: ref Object, index: int)
{
n := len src.children;
src.transfer((n - 1, n), dst, index);
}
deal()
{
clearsel();
n := len deck.children;
if (n > 0) {
deck.transfer((0, n / 2), dmembers[0].spare, 0);
deck.transfer((0, len deck.children), dmembers[1].spare, 0);
}
for (i := 0; i < 2; i++) {
d := dmembers[i];
loop: for (j := 0; j < len d.row; j++) {
for (k := j; k < len d.row; k++) {
if (len d.spare.children == 0)
break loop;
transfertop(d.spare, d.row[k], -1);
}
}
for (j = 0; j < len d.row; j++)
settopface(d.row[j], 1);
}
}
maketable(parent: string)
{
addlayframe: import cardlib;
for (i := 0; i < 2; i++) {
layout := Cmember.index(i).layout;
addlayframe("p" + string !i, parent, layout, dTOP|EXPAND, dBOTTOM);
addlayframe("p" + string i, parent, layout, dBOTTOM|EXPAND, dTOP);
addlayframe("centre", parent, layout, dTOP|EXPAND, dTOP);
}
}
newstack(parent: ref Object, spec: Stackspec, stype: string): ref Object
{
stack := cardlib->newstack(parent, nil, spec);
stack.setattr("type", stype, None);
stack.setattr("actions", "click", All);
return stack;
}
concat(v: list of string): string
{
if (v == nil)
return nil;
s := hd v;
for (v = tl v; v != nil; v = tl v)
s += " " + hd v;
return s;
}
remark(s: string)
{
clique.action("remark " + s, nil, nil, All);
}
clearsel()
{
n := cardlib->nmembers();
for (i := 0; i < n; i++)
Cmember.index(i).sel.set(nil);
}