This reverts commit df8a1ffc1b.
Because it breaks group retreat. Trivial conflicts due to the removal
of option SAIL.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Conflicts:
src/lib/subs/retreat.c
tests/retreat/journal.log
This exposes more bugs. They're marked "BUG:" in the test input. A
few bugs get masked, but I'll unmask them again in the next commit.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
To reduce coupling between test cases.
Lucky dice expose another bug. It's marked "BUG:" in the test input.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
torp() applies torpedo damage after retreat. Wrong, because mobility
cost increases with damage. Broken since retreat was added in
Chainsaw.
Fix by applying damage before retreat. Bonus: bulletins make more
sense.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
SAIL has issues:
* Sail orders are executed at the update. Crafty players can use them
to get around the update window.
* The route is fixed at command time. You can't let the update find
the best route, like it does for distribution.
* The info pages documenting it amount to almost 100 non-blank lines
formatted. They claim you can follow friendly ships. This is
wrong. They also show incorrect follow syntax. Unlikely to be the
only errors.
* Few players use it. Makes it a nice hidey-hole for bugs. Here are
two nice ones:
- If follow's second argument is negative, the code attempts to
follow an uninitialized ship. Could well be a remote hole.
- If ship #1 follows #2 follows #3 follows #2, the update goes into
an infinite loop.
* It's more than 500 lines of rather crufty code nobody wants to
touch. Thanks to a big effort in Empire 2, it shares some code with
the navigation command. It still duplicates other navigation code.
The sharing complicates fixing the bugs demonstrated by
navi-march-test.
Reviewing, fixing and testing this mess isn't worth the opportunity
cost. Remove it instead. Drop commands follow, mquota, sail and
unsail. Drop ship selectors mquota, path, follow.
struct shpstr shrinks some more, on my system from 160 to 120 bytes.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
When a player moves more than 1023 sectors in a single navigate
command, we overrun the buffer holding the path taken. Remote hole,
but it requires a ship that can go that far, and even a ship with
speed 1000 would need a tech level well in excess of 1000 for that.
Thus, the hole is purely theoretical for even remotely sane game
configurations.
First known version with the flaw is 4.0.0.
Fix by going back the older behavior: don't print the total path
taken, but do print what the path finder does. Context diff of an
example:
[0:634] Command : nav 3 6,0
Flagship is od oil derrick (#3)
+Using path 'n'
h =
k . .
j d
<67.2:67.2: 6,0> h
od oil derrick (#3) stopped at 6,0
-Path taken: n
This is how march works.
Removes the only use of shp_nav_one_sector()'s unusual return value 2.
Return 1 instead.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Does not cover scattered navigate and march, RAILWAYS 0, enemy action
while sitting at the prompt, and interdiction.
The test exposes bugs. They're marked "BUG:" in the test input.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
When a retreating ship or land unit runs into a sector it can't enter,
it stops. The direction character that led it there is consumed, even
though it could not be followed. The next retreat will then attempt
to follow the rest of the path. Don't do that.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Undocumented misfeature: retreat and lretreat accept anything as
retreat path. The paths' actual consumers retreat_ship1() and
retread_land1() silently ignore invalid direction characters.
The retreat paths are in xdump, and invalid ones could conceivably
confuse smart clients.
Change the commands to reject invalid paths, and the consumers to oops
on invalid direction characters.
Note that invalid paths get rejected even when they're not actually
used because the conditions argument contains a "c" for "cancel".
Requiring the user give a new path so he can cancel the old one is
comically bad design.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Obscure feature: 'h' in a retreat path stops the current retreat. The
code treats that as entering the current sector again, thus charges
mobility for staying put. It also reports "could not retreat to" for
a ship or land unit that can retreat out of, but could not retreat
into its current sector, e.g. a ship in an unfriendly harbor.
Fix by cleaning up the tortuous control flow.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
The retreat code happily retreats anything, without considering who
owns it. It reports retreat to the owner by bulletin, even when the
owner is the current player.
Commands shouldn't report to the current player by bulletin, they
should print directly. Fixable. However, your ships and land units
retreating from your own actions makes little sense. Suppress it.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
A group retreat is executed in increasing UID order. The resulting
bulletin can be confusing.
Instead, retreat the ship that had its retreat conditions satisfied
first, and only then its group, if any.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
The mission gets cleared whenever a retreat is triggered, even for
ships and land units that are unable to retreat.
Clear it only when the ship or land unit actually retreats.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
retreat_land() reads ships instead of land units, overrunning local
variable land. On lucky systems such as mine, this clobbers ni, and
triggers an oops. On unlucky systems, it crashes. On really unlucky
systems, it corrupts the land units file.
Broken since land unit retreat was added in Chainsaw 3.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
Does not cover land unit retreat after a failed morale check.
The test exposes bugs. They're marked "BUG:" in the test input.
Signed-off-by: Markus Armbruster <armbru@pond.sub.org>
