#44779: Lua: support for requirement vectors
Open Date: 2022-06-08 11:46
Last Update: 2022-06-08 11:46
URL for this Ticket:
https://osdn.net//projects/freeciv/ticket/44779
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Last Changes/Comment on this Ticket:
2022-06-08 11:46 Updated by: ihnatus
* New Ticket "Lua: support for requirement vectors" created
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Ticket Status:
Reporter: ihnatus
Owner: (None)
Type: Feature Requests
Status: Open
Priority: 5 - Medium
MileStone: (None)
Component: (None)
Severity: 5 - Medium
Resolution: None
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Ticket details:
Make a class to get requirement vector properties of unit types etc., as well as create them dynamically for in-script use.
That probably requires creating Lua object type that resides within Lua memory (see comment in the code about destructors in C projects, it's probably still actual). Like this:
struct req_vec_obj {
struct requirement_vector* reqs;
bool is_external; // Memory managed by C, editing not allowed
bool operation_or; // For obsoleted_by
}
#define Req_Vec struct req_vec_obj
We provide methods (Req_Vec):test(elements), (Req_Vec):iterate(), and for editable vectors :insert(pos, {elements}) and :delete(pos). Also, we make module requirements with method .new_vec{table} and .test(req_type, req_range, {elements}, survives?), better with a shortcut to just requirementsreq_type(...). "Elements" may be a table with named fields like {city = "Leningrad"} or just a sequence where field is detected by element type (find.city(nil, "Leningrad")). The vector table may look most alike what we have in specfiles {"type", "name", "range"}, {"DiplRel", "IsForeign", "Local"}} or consist of tables with named arguments {{type = "DiplRel", name = "IsForeign", range = "Local ", }}.
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