The Screen::show takes ownership of the screen pointer. I decided to
switch the parameter to std::unique_ptr to make the pointer ownership
explicit. The unique_ptr then provides automatic screen destruction in
Screen::show unless pointer is inserted or is already in the linked list
that is managed by df.
The map_block->designation.{dig,smooth} are reset to zeros when a job
posting is created for the designation. The job is then used to override
the designation state in the map_block. To make the new designation set
propogate to jobs the job structure would require updating. The update
would be possible a complex operation. The simple alternative is to
remove the job and let df create a new job in the next tick.
Fixes#1229
This makes it easier for tools to properly handle designating and undesignating
trees for chopping and plants for gathering, which changed significantly in
0.40.20.
Ref #531 (?), #656, #1014, #1018, #1030, #1076
Job remove eliminates a job's worker & holder references, if any, puts
the worker on cd, if appropriate, removes the job's postings, eliminates
the job from the global linked list, and then finally deletes it. This
code was tested by incorporating it into autochop and it does make the
plugin work. However, chop jobs don't have holder building references,
and anyway, with DF being 90% edge case by volume, this could use a heck
of a lot more testing.
I saw elsewhere code that prevented worker removal if the job was a
special job, and that made me feel funny so I made the job remove method
not work if the job is a special job.
- Don't set in_building by default when use_mode is 0 (consistent with most vanilla DF items)
- make use_mode optional and default to 0 (including in Lua API)
Resolves#885
This requires plugins to pass plugin_self to Screen::show(), but
avoids the need to implement special checks in plugin_onstatechange
for the SC_BEGIN_UNLOAD event.