Topic: Give goods periodically in script

You will definitely want the commented out get_buildings function. It will give you an array, but since the player has only 1 headquarter, you can simply grab the first element. Something like this should work:

for i=1,100000 do
     sleep(600000)
     local hq = wl.Game().players[player.number].get_buildings("headquarters")[1]

      if hq:get_wares("water") < 1280 then
         hq:set_wares("water", hq:get_wares("water") + 128)
       end

Headquarters are always warehouses, so you don't need the check there.

Documentation for get_buildings is on this page:

https://wl.widelands.org/docs/wl/autogen_wl_game/

Busy indexing nil values

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Actually on checking closer, I see that the only thing that fails with my script is the test of the type. I need that one to make sure I have a warehouse or hq atthe tsart location.

Did the type change since buid 18? What should I check for now instead of

hq.type == "warehouse"

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It needs to be local hq = wl.Game().players[player.number]:get_buildings("headquarters")[1] with a colon before get_buildings() (don't ask me why).

From infrastructure.lua: immovable.descr.type_name == "warehouse".

You can also use the following which is more general (not checked, I have not worked with Lua for a while now, so I do not remember the exact syntax):

local wh = wl.Game().players[player.number]:get_buildings("headquarters")[1] or wl.Game().players[player.number]:get_buildings("warehouse")[1]

-- which is equivalent to

local wh = wl.Game().players[player.number]:get_buildings("headquarters")[1]
if wh = nil then wh = wl.Game().players[player.number]:get_buildings("warehouse")[1]
-- you can add ports if you want

You are right, you need to check if you found a building at all (if wh then), but not for its type.

This way is more general because a) you can easily add it to fortified_village, where the citadel is at sf.x, sf.y and b) it still gives you resources when the headquarters has been destroyed.

Some general notes:

• Your idea with get_field().immovable should work, but you need to check the type then.
• You can use while true do if you want an infinite loop.
• You can give yourself bread and strong beer periodically so that the battle arena works.

"Only few people know how much one has to know in order to know how little one knows." - Werner Heisenberg

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It needs to be local hq = wl.Game().players[player.number]:get_buildings("headquarters")[1] with a colon before get_buildings() (don't ask me why).

I can clear that up :). Details are here, but what is boiling down to is that the colon is just syntactic sugar. That means the next two lines are exactly the same:

p:a_function(a, b)

is the same in Lua as

p.a_function(p, a, b)

So the column means: pass the table that stands before the column as the first argument to the function I am calling after it.

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I think we would all benefit from having short usage examples for the more complicated functions. I found the documentation for this function difficult to read as well.

Busy indexing nil values

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