item storage. Rationale: Permitted values are 0..M, where M depends
on the container. The largest M is ITEM_MAX (9999). Benign
overflow/underflow occurs at those limits. Catastrophic
overflow/underflow occurs at the limits of the underlying data type.
For `unsigned short', any underflow is catastrophic. For `short',
benign undeflow happens long before catastrophic underflow. Moreover,
unsigned arithmetic tends to trip up unwary programmers.
With variables, item increases beyond the capacity of variables
(65535) were ignored here.
This should cover all item changes not going through putvec().
(give, deliver_it): Use it instead of 9990.
(load_comm_ship, load_comm_land, rese): Use it instead of 9999.
(thre): Use it instead of 10000.
(check_market, explore, move, pln_dropoff): Use it instead of 32767.
(unload_it): Use it instead of 99999 (which couldn't possibly work,
but what do you expect from the autonav code).
(doland, detonate, spread_fallout): Use it. With variables, fallout
beyond the capacity of variables (65535) was ignored, except in
doland(), where it saturated at 9999, and spread_fallout, where it
could overflow. Now it always saturates at FALLOUT_MAX.
(doland, mine, landmine, setsector, pln_dropoff): Use it. With
variables, mining beyond the capacity of variables (65535) was
ignored. Now the mines saturate at MINES_MAX.
Simplify. Split into member sct_che (number) and sct_che_target.
Users changed.
(get_che_cnum, set_che_cnum, get_che_value, get_che_value): Che
encoding/decoding functions; remove.
(CHE_MAX): Move from var.h to sect.h.
(prsect, doland): Print / edit the new field.
To save space, the ancients invented `variables': a collection of
key-value pairs, missing means zero value, space for `enough' keys.
This complicates the code, as assigning to a `variable' can fail for
lack of space. Over time, `enough' increased, and for quite some time
now `variables' have been *wasting* space. This changeset replaces
them, except in struct mchrstr, struct lchrstr and struct pchrstr,
where they are read-only, and will be replaced later. It is only a
first step; further cleanup is required. To simplify and minimize
this necessarily huge changeset, the new item[] arrays have an unused
slot 0, and the old variable types V_CIVIL, ... are still defined, but
must have the same values as the item types I_CIVIL, ...
(genitem_ca, ship_ca, plane_ca, land_ca): Remove selector "sell".
(comstr, trdstr): Members trd_price, com_price have no effect. Use
them instead of trd_maxprice, com_maxprice and remove the latter.
(commodity_ca, trade_ca): Remove selector "maxprice".
its code is obviously not in working order. Remove.
(minmult, maxmult, configkeys): Unused configuration parameters,
remove.
(tradedesc): Remove code related to mult that had no effect.
(multread, commread, commwrite, commamt, commset, multset, commprice):
Dangerous, because code bypasses ef_read() & friends, remove.
(diss): Commodity cleanup uses the above, remove. Command is disabled
and unlikely to work anyway.
