How to refer to args in abm definition?

[azekill_DIABLO]

I have defined an abm, here it is.

Code: Select all

minetest.register_abm({ 
			nodenames = params.nodenames or {"default:dirt_with_grass"},
			neighbors = params.neighbors or {"air"},
			interval = params.interval or 300,
			chance = params.chance or 1000, 
			min_light = params.min_light or 0,
			max_light = params.max_light or 7,
			action = <do fun things!>
		})

But I have no clue on how to refer to min_light and max_light in 'action' where I need to use them. Do i have to use something like def.min_light?

[Andrey01]

I have defined an abm, here it is.

Code: Select all

minetest.register_abm({ 
			nodenames = params.nodenames or {"default:dirt_with_grass"},
			neighbors = params.neighbors or {"air"},
			interval = params.interval or 300,
			chance = params.chance or 1000, 
			min_light = params.min_light or 0,
			max_light = params.max_light or 7,
			action = <do fun things!>
		})

But I have no clue on how to refer to min_light and max_light in 'action' where I need to use them. Do i have to use something like def.min_light?

As these parameters belong to "abm_definition_table" try to refer so (I don`t sure exactly it will work):

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abm_definition_table[min_light] or abm_definition_table[max_light]

[azekill_DIABLO]

Thanks for this answer. I will see if it works!

[Krock]

I wonder what kind of API documentation file you two are reading because light conditions in the ABM definition do not exist.
Here's the definition of all table keys which can be assigned: https://github.com/minetest/minetest/bl ... 5097-L5127
This means you'll have to implement the light checks yourself - in the `action` function. Here's how it could look like: (untested)

Code: Select all

action = function(pos, node)
	local light = minetest.get_node_light(pos)
	if not light or light < (params.min_light or 0) or light > (params.max_light or 7) then
		return
	end
	-- Do something here
end

See also: what MTG's flowers mod does

[azekill_DIABLO]

It's just absolutly what I did first Krock. params.min/max_light doesn't work for the third line (of your code). The debbuger says it can't be concatenated.
However this code placed in 'action' works:

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print("min_light = " .. params.min_light .. " and max_light = " .. params.max_light)

It returns:

min_light = 0 and max_light = 7

It's weird because my code (in 'action' part) looks like this:

Code: Select all

action = function(pos, node)
   local node_light = minetest.get_node_light(pos)
   print("wanna spawn something with light : " .. node_light)                                       -- Works
   print("min_light = " .. params.min_light .. " and max_light = " .. params.max_light)             -- Works
   if node_light >= params.min_light and node_light <= params.max_light then                        -- Doesn't work :'(
      print('light checks ok')
      <action>
   end
end

The if part bugs, but the print part does.

[Andrey01]

I wonder what kind of API documentation file you two are reading because light conditions in the ABM definition do not exist.
Here's the definition of all table keys which can be assigned: https://github.com/minetest/minetest/bl ... 5097-L5127
This means you'll have to implement the light checks yourself - in the `action` function. Here's how it could look like: (untested)

Code: Select all

action = function(pos, node)
	local light = minetest.get_node_light(pos)
	if not light or light < (params.min_light or 0) or light > (params.max_light or 7) then
		return
	end
	-- Do something here
end

See also: what MTG's flowers mod does

Ah, i did not know. I am reading dev.minetest.net and this manual is really messy to me because there are all explainations are too short and that`s why i need to ask to Minetest Community to explain me something. Minetest GitHub repo is messy, too as i need to rummage long to find out something.

[azekill_DIABLO]

Bump: I didn't find any work around nor reference on how to use that. I could probably find another way to do that but it would be laggy.