This takes care of a number of bugs / inconsistencies:
* Ships with zero firing range could return fire and fire support, but
not fire actively or interdict. Fix by testing for gun limit
instead in multifire() and mission(). No ships in the stock game
are affected.
* Required gun crew was inconsistent: multifire() let N military fire
max(1,floor(N/2)) guns for active fire. Ditto perform_mission() for
interdiction. quiet_bigdef() let them fire N guns for returning gun
fire. Ditto sd() for firing support and firing at boarding parties.
fire_dchrg() let them fire floor(N/2) for returning fire to
torpedoes. Unify to let N military fire floor((N+1)/2) guns.
* Shell use was inconsistent: sd() and perform_mission() used one
shell per gun, everything else one per two guns. Unify to one shell
per two guns.
* Shell resupply bugs: multifire() got two shells regardless of actual
ammo use. quiet_bigdef() got one shell (but use_ammo() uses only
one, which is a bug). sd() and perform_mission() resupplied before
checking all other requirements and could thus get more shells than
actually needed.
Before 4.0.6, depth charges required no guns, one military, did damage
like shell fire from two guns, and used two shells. Missions were not
quite consistent with that (bug). 4.0.6 changed depth charges to work
exactly like shell fire (but without updating documentation
accordingly): require guns and gun crew, non-zero firing range, scale
damage and ammunition use with guns.
Go back to the old model, but with damage like three guns, to avoid
changing the stock game's dd now (three gun damage for two shells).
Stock game's af changes from two gun damage for one shell, and nas
from four gun damage for two shells.
Factor out common depth-charging code into shp_dchrg().
This takes care of a number of bugs / inconsistencies:
* sb() fired support even when there were not enough mil.
* Shell resupply bugs: multifire() and quiet_bigdef() resupplied
shells before checking all other requirements and could thus get
more shells than actually needed.
Rename landgun() to fortgun() for consistency.
Only treaty extension initialized ef_type and uid properly. None of
them zeroed unused members and holes in the struct. comm and trade
extension called ef_extend(), which had no effect, so remove that.
Make sure all members of unit empobj_storage share uid in addition to
ef_type.
Add matching uid member to struct gamestr, struct natstr and struct
sctstr, and set them.
Swap struct empobj members uid and own to make that easier, and update
struct comstr, struct lndstr, struct lonstr, struct loststr, struct
nwsstr, struct nukstr, struct plnstr, struct realmstr, struct shpstr,
struct trdstr, struct trtstr accordingly.
Note that the uid isn't properly set for struct nwsstr, struct lonstr,
struct trdstr, struct comstr and struct loststr. To be fixed.
put_empobj() used struct empobj member uid, which is valid only for
units. Existing users pass only units, fortunately. Fix by making it
take type and uid parameters.
This led to a bogus message when an interactive explore moved onto a
bridge and got prompted, the bridge was destroyed, and the player
stopped the explore "on the water".
desi() ran the designate code twice, first for adding up the cost,
then for changing designation. However, the checking pass already
changed the sector when that cost nothing. The checking pass also
suppressed messages. There was at least one message that never got
printed because it was suppressed in the checking pass, and the
condition for it was no longer true in the changing pass, due to the
premature sector change: when a deity changed a non-coastal sector to
harbor or bridge head.
The total cost check is of limited value: designate costing money is a
bad idea, and the stock game has no such sectors. Not enough value to
justify keeping and fixing this disgusting mess. Remove it instead.
A bridge (span or tower) must be splashed when it gets damaged below
SCT_MINEFF. Likewise when its last supporting sector (bridge head or
tower) gets damaged below SCT_MINEFF, unless EASY_BRIDGES is enabled.
We need to check this whenever a bridge head, span or tower gets
damaged. This is done in three places, and all of them screw up:
* checksect() ignores damage to bridge heads. It also leaves writing
back the sector it checks to the caller, which never happens when
it's called from sct_postread().
Note that checksect() drowns all planes on bridges it splashes.
Functions that need to exempt flying planes from such a fate have to
splash bridges themselves.
* sect_damage() ignores damage to bridge towers, and damage to bridge
spans unless EASY_BRIDGES is enabled. It then runs checksect(),
which compensates for these omissions, but happily drowns the planes
sect_damage() attempts to protect.
* eff_bomb() ignores damage to bridge heads. Collateral damage makes
sect_damage() run, which compensates for the omission.
This causes the following bugs:
* Efficiency damage going through sect_damage() can drown planes it
shouldn't. This affects pinpoint bombing when collateral damage
splashes a bridge, and strategic bombing. The drowned planes then
crash and burn when they attempt to land at their (just splashed)
base.
* Efficiency damage to bridge heads not going through sect_damage()
fails to collapse unsupported bridges. This affects pin-bombing
efficiency without collateral damage, and ground combat. Also deity
commands edit, setsector and add, but that could be regarded as a
feature.
* If the sector file somehow ends up with an inefficient bridge span,
it collapses on every read again and again, until it collapses on a
write. Related problems exist with other actions of checksect(),
and they're not addressed here.
* If the sector file somehow ends up with adjacent inefficient bridge
towers, checksect() on any of them recurses infinitely:
- checksect() inefficient tower T1
- knockdown() T1, but don't write that back to the sector file
- bridgefall() T1; this reads all adjacent sectors, including
inefficient towert T2
- checksect() T2
- knockdown() T2, but don't write that back to the sector file
- bridgefall() T1; this reads adjacent sectors including T1
- checksect() T1
...
This commit creates a new function bridge_damaged() to splash any
bridges that became inefficient or unsupported after damage to a
sector. To avoid the inifinite recursion, we call it in
sct_prewrite() instead of checksect().
No uses knockdown() outside bridgefall.c remain, so give it internal
linkage.
There are several files with land unit subroutines. This one is in an
awkward place: it depends on stuff from ../subs, which contributes to
libcommon.a's ugly dependencies. Move its contents to logical places
(use internal linkage where possible), and remove it.
(init_nats): Use it. No functional change.
(status): Use it. This sets player->nstat from scratch, not just
MONEY and CAP.
(brea): Don't bother to update player->nstat, status() will.
added that test to make xdump available before break, and faithfully
denied access exactly when xdump wasn't available before. This denied
access when maximum minutes per day were exceeded. Don't.
negative. Some places considered $0 as bankrupt, some didn't. Fix
the ones that did:
(repo_list): report command misreported countries with $0 as broke.
(init_nats): If you had $0, logging out and back in bankrupted you.
(produce_sect, upd_ship): Failed to build sectors and produce stuff
for countries with $0.
isdigit() can return anything, not just 0 or 1, and you can't combine
its values with &=! The bug could make loading operations fail
noisily instead of silently, depending on the system's implementation
of isdigit().
(fit_plane_on_ship, fit_plane_on_land): New.
(pln_oneway_to_carrier_ok, put_plane_on_ship, count_planes)
(put_plane_on_land, count_land_planes): Use them. No functional
change.
(fit_plane_off_ship, fit_plane_off_land): New.
(take_plane_off_ship, take_plane_off_land): Use them. This oopses
when the carriers plane counter underflows.
(take_plane_off_ship): Document that carrier's plane counters may be
screwed up.
(take_plane_off_ship, take_plane_off_land): Oops when the plane isn't
on the carrier.
(take_plane_off_ship, take_plane_off_land): Don't fail when the plane
to be taken off can't go on this type of carrier, just take it off.
No error condition left, so return void. Callers couldn't do anything
useful with the status anyway, and most didn't bother. Change those
that did.
Remove the extern posix_fileno().
(fileno) [_WIN32]: Replace system fileno() with a function that supports posix
file descriptors. Move #undef fileno to w32misc.h as the system define
is in stdio.h.
(rea) [_WIN32]: Add stdio.h for fileno() extern declaration and add misc.h
to ensure the WIN32 fixes to stdio.h are included.
