void
gift(natid givee, natid giver, void *ptr, char *mesg)
{
if (giver != givee)
wu(0, givee, "%s %s %s\n", cname(giver), unit_nameof(ptr), mesg);
unit_give_away(ptr, givee, 0);
}
/*
* Give @unit and its cargo to @recipient.
* No action if @recipient already owns @unit.
* If @giver is non-zero, inform @recipient and @giver of the transaction.
* Clears mission and group on the units given away.
*/
void
unit_give_away(struct empobj *unit, natid recipient, natid giver)
{
int type;
struct nstr_item ni;
union empobj_storage cargo;
if (unit->own == recipient)
return;
if (giver) {
mpr(unit->own, "%s given to %s\n",
unit_nameof(unit), cname(recipient));
mpr(recipient, "%s given to you by %s\n",
unit_nameof(unit), cname(giver));
}
unit->own = recipient;
unit_wipe_orders(unit);
put_empobj(unit->ef_type, unit->uid, unit);
for (type = EF_PLANE; type <= EF_NUKE; type++) {
snxtitem_cargo(&ni, type, unit->ef_type, unit->uid);
while (nxtitem(&ni, &cargo))
unit_give_away(&cargo.gen, recipient, giver);
}
}
/*
* Drop cargo of @unit.
* Give it to @newown, unless it's zero.
*/
void
unit_drop_cargo(struct empobj *unit, natid newown)
{
int type;
struct nstr_item ni;
union empobj_storage cargo;
for (type = EF_PLANE; type <= EF_NUKE; type++) {
snxtitem_cargo(&ni, type, unit->ef_type, unit->uid);
while (nxtitem(&ni, &cargo)) {
switch (type) {
case EF_PLANE:
cargo.plane.pln_ship = cargo.plane.pln_land = -1;
break;
case EF_LAND:
cargo.land.lnd_ship = cargo.land.lnd_land = -1;
break;
case EF_NUKE:
cargo.nuke.nuk_plane = -1;
break;
}
mpr(cargo.gen.own, "%s transferred off %s %d to %s\n",
unit_nameof(&cargo.gen),
ef_nameof(unit->ef_type), unit->uid,
xyas(cargo.gen.x, cargo.gen.y, cargo.gen.own));
if (newown)
unit_give_away(&cargo.gen, newown, cargo.gen.own);
put_empobj(type, cargo.gen.uid, &cargo.gen);
}
}
}
int
check_trade(void)
{
int n;
struct natstr *natp;
struct trdstr trade;
union empobj_storage tg;
time_t now;
int price;
int saveid;
natid seller;
for (n = 0; gettrade(n, &trade); n++) {
if (trade.trd_unitid < 0)
continue;
if (!trade_getitem(&trade, &tg))
continue;
if (tg.gen.own == 0) {
trade.trd_owner = 0;
trade.trd_unitid = -1;
puttrade(n, &trade);
continue;
}
if (tg.gen.own != trade.trd_owner) {
logerror("Something weird, tg.gen.own != trade.trd_owner!\n");
trade.trd_owner = 0;
trade.trd_unitid = -1;
puttrade(n, &trade);
continue;
}
if (trade.trd_owner == trade.trd_maxbidder)
continue;
(void)time(&now);
if (trade.trd_markettime + TRADE_DELAY > now)
continue;
saveid = trade.trd_unitid;
seller = trade.trd_owner;
trade.trd_owner = 0;
trade.trd_unitid = -1;
if (!puttrade(n, &trade)) {
logerror("Couldn't save trade after purchase; get help!\n");
continue;
}
price = trade.trd_price;
natp = getnatp(trade.trd_maxbidder);
if (natp->nat_money < price) {
nreport(trade.trd_maxbidder, N_WELCH_DEAL, seller, 1);
wu(0, seller,
"%s tried to buy a %s #%d from you for $%.2f\n",
cname(trade.trd_maxbidder), trade_nameof(&trade, &tg.gen),
saveid, price * tradetax);
wu(0, seller, " but couldn't afford it.\n");
wu(0, seller,
" Your item was taken off the market.\n");
wu(0, trade.trd_maxbidder,
"You tried to buy %s #%d from %s for $%d\n",
trade_nameof(&trade, &tg.gen), saveid, cname(seller),
price);
wu(0, trade.trd_maxbidder, "but couldn't afford it.\n");
continue;
}
/* If we get this far, the sale will go through. */
natp->nat_money -= price;
putnat(natp);
natp = getnatp(seller);
natp->nat_money += roundavg(price * tradetax);
putnat(natp);
switch (trade.trd_type) {
case EF_NUKE:
tg.nuke.nuk_x = trade.trd_x;
tg.nuke.nuk_y = trade.trd_y;
tg.nuke.nuk_plane = -1;
break;
case EF_PLANE:
if (!pln_is_in_orbit(&tg.plane)) {
tg.plane.pln_x = trade.trd_x;
tg.plane.pln_y = trade.trd_y;
}
if (opt_MOB_ACCESS) {
tg.plane.pln_mobil = -(etu_per_update / sect_mob_neg_factor);
game_tick_to_now(&tg.plane.pln_access);
} else {
tg.plane.pln_mobil = 0;
}
tg.plane.pln_harden = 0;
tg.plane.pln_ship = -1;
tg.plane.pln_land = -1;
break;
case EF_SHIP:
break;
case EF_LAND:
tg.land.lnd_x = trade.trd_x;
tg.land.lnd_y = trade.trd_y;
if (opt_MOB_ACCESS) {
tg.land.lnd_mobil = -(etu_per_update / sect_mob_neg_factor);
game_tick_to_now(&tg.land.lnd_access);
} else {
tg.land.lnd_mobil = 0;
}
tg.land.lnd_harden = 0;
unit_drop_cargo(&tg.gen, 0);
tg.land.lnd_ship = -1;
tg.land.lnd_land = -1;
break;
default:
logerror("Bad trade type %d in trade\n", trade.trd_type);
break;
}
unit_give_away(&tg.gen, trade.trd_maxbidder, 0);
put_empobj(trade.trd_type, saveid, &tg.gen);
nreport(seller, N_MAKE_SALE, trade.trd_maxbidder, 1);
wu(0, seller, "%s bought %s #%d from you for $%.2f\n",
cname(trade.trd_maxbidder), trade_nameof(&trade, &tg.gen),
saveid, price * tradetax);
wu(0, trade.trd_maxbidder,
"The bidding is over & you bought %s #%d from %s for $%d\n",
trade_nameof(&trade, &tg.gen), saveid, cname(seller),
price);
}
return RET_OK;
}
