Change struct range from exclusive to inclusive upper bounds, for
consistency with struct realmstr and the area syntax. Also fix many
bugs.
real()'s conversion from struct range's exclusive upper bounds to
struct realmstr's inclusive upper bounds could underflow and store -1
in the realms file. Harmless, because its users didn't mind:
list_realm() and nstr_exec_val() convert back to relative coordinates,
and sarg_getrange() is only used by sarg_area(), which happened to
undo the damage. The change to inclusive upper bounds gets rid of the
broken conversion.
xyinrange() incorrectly treated the upper bound as inclusive, unless
the bounds were equal. Impact:
* nxtitem() and nxtitemp() cases NS_AREA and NS_DIST attempted to hack
around xyinrange()'s lossage(!), but screwed up: sectors on the
lower bound of of a range spanning the the whole world were skipped.
This affected all command arguments that support area or distance
syntax for items. In sufficiently small worlds, it could also make
radar miss satellites and ships, sonar miss ships, satellite miss
ships and land units, nuclear detonations miss ships, planes, land
units and nukes, automatic supply miss ship and land unit supply
sources, ships and land units fail to return fire, ships fail to
fire support.
* draw_map() could draw units sitting just right or just below of the
mapped area. No effect, as these parts of the map weren't actually
shown.
xydist_range() produced an inclusive upper bound when it decided that
the range covers everything in that dimension (which it didn't get
quite right either). This could make snxtsct_dist() and
snxtitem_dist() initialize the iterator with an incorrect upper bound.
Similar impact as the xyinrange() / nxtitem() lossage.
border() could print the hundreds line unnecessarily.
snxtsct() and snxtsct_all() screwed up for odd WORLD_Y: they failed to
include (WORLD_Y - 1) / 2 in the y-range. This affected all command
arguments that support "*" syntax for sectors, plus add ... c, power
n, and break.
snxtsct_all() failed to normalize the bounds (presumed harmless).
There were a few correct, but somewhat unclean uses of struct range
with inclusive upper bounds:
* nat_reset() used one internally.
* pathrange() worked with inclusive upper bounds internally, but
corrected to exclusive upper bounds before passing the range out.
* sarg_getrange() worked with inclusive upper bounds. Its only caller
sarg_area() corrected that to exclusive upper bounds.
The change to inclusive upper bounds cleans this up.
unit_map() and xysize_range() had no issues (isn't that amazing?), but
need to be updated for the changed struct range semantics.
Broken in commit 5f764285 (v4.3.12) for negative multiples of WORLD_X
and WORLD_Y, respectively.
This could theoretically lead to buffer overruns and other
unpleasantness. None have been reproduced, though.
(isok, ef_init, bmaps_intersect, bp_init, player_accept)
(finish_sects, main): Use it.
(bp_neighbors, bp_lbcost, pathcost): Use XYOFFSET(). No
functional change.
other. Ensure headers in include/ can be included in any order
(except for econfig-spec.h, which is special). New header types.h to
help avoid inclusion cycles. Sort include directives. Remove some
superflous includes.
double-remainder problem: x-coordinate SHRT_MAX+1 is truncated to 0 by
cast to coord, then converted by xabs(). This is wrong unless WORLD_X
divides SHRT_MAX+1.
(sarg_xy, sarg_getrange, sarg_range): Use them.
(inputxy): No longer used, remove.
(sarg_type): Use NS_UNDEF instead of 0.
(sarg_list): Change confusing loop control. Properly diagnose
overlong lists; used to silently ignore list tail and return MAX+1,
which made a later snxtitem_list() fail.
(atoip): No longer used, remove. Parsing was broken anyway.
(sarg_type, sarg_xy, sarg_area, sarg_range, sarg_list, sarg_getrange):
Use plain char * instead of s_char *.
thread entrypoints:
(lwpSelect, shutdown_sequence): Parameters didn't match thread entry
point prototype.
(lwpEntryPoint): Arguments didn't match thread entry point prototype.
Change linkage of functions without prototype declaration to static
where possible.
Remove some superflous declarations, replace others by suitable
includes.
