Lua: Get worked tile information

[XHawk87]

Is your feature request related to a problem? Please describe.
I need a way to find out which tiles are being worked by which cities in Lua.

Describe the solution you'd like
Make the worked variable available through the Tile type.

freeciv21/common/tile.h

Line 51 in 15cfe08

struct city *worked; // nullptr for not worked

Describe alternatives you've considered
An iterator on the City type over all of its worked tiles would also work.

Additional context
Blocks longturn/Sim#4

[lmoureaux]

Add a method here: https://github.com/longturn/freeciv21/blob/master/common/scriptcore/tolua_game.pkg#L268

Back it up with a new function here: https://github.com/longturn/freeciv21/blob/master/common/scriptcore/api_game_methods.h#L124

Add the implementation to this file: https://github.com/longturn/freeciv21/blob/master/common/scriptcore/api_game_methods.cpp

[XHawk87]

When I was looking at this before, I was curious about this. When is this struct used vs the module?

freeciv21/common/scriptcore/tolua_game.pkg

Line 58 in a1f8325

struct Tile {

[Corbeau-1]

Do you want the server to have this information to do somethng automatically or you want the player to have easier access to the information? If it's the latter, shift-alt-rightclick may help.

[lmoureaux]

This is about using it for scripting, e.g. to create militia units on worked tiles to slow down invasions.

[Corbeau-1]

Hmmm... So, when you conquer a city, you instantly get a militia on forward tiles?

[XHawk87]

Hmmm... So, when you conquer a city, you instantly get a militia on forward tiles?

longturn/Sim#4 The idea for this was to have them appear at TC.

Though for this task, it's really just to allow us to access city worked tile info for ANY scripted purpose.