Post your modding questions here

[rubberduck]

is there a way to add a recipe for the technic grinder in my mod????, something like using type = "grinding", or do i have to add something in the technic modpack???

i found a function in the technic-modpack, but that does not work in my mod:

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technic.register_grinder_recipe({ input, output })

[Hybrid Dog]

Is there any way to create light-emitting entities?

of course, yes, but you would need to change the source code and so it only works on singleplayer mode
if you want to make light at the position of an object, just set an invisible airlike light source node there, I think the flashlight of technic does this
it may also work if you change param1 of the nodes with voxelmanip, I should test it

is there a way to add a recipe for the technic grinder in my mod????, something like using type = "grinding", or do i have to add something in the technic modpack???

i found a function in the technic-modpack, but that does not work in my mod:

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Code: Select all

technic.register_grinder_recipe({ input, output })

you need to add technic (or technic?) to depends.txt and then register the recipe:
https://github.com/minetest-technic/tec ... es.lua#L47
e.g.
technic.register_grinder_recipe({input = {"default:mese"}, output = "default:cobble"})

[Linuxdirk]

Hey there.

Since this question didn’t get any replys but only a few upvotes on Reddit I ask it here, too :)

For a mod I’m trying to get an optional setting value from minetest.conf. If the value is not set there should be a given default value being used instead. (And I don’t want to declare, trying to set, test for nil and set another value manually every time for every variable I want to use.)

Since I didn’t found anything in the developer wiki I created the following function doing exactly what I described.

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local function getValid(value, default)
    v = minetest.setting_get(value)
    return (v == nil and default or v)
end

When invoked like getValid('my_value', 'foo') the function tries to get my_value from minetest.conf. If available it returns the value of my_value. If my_value is missing in minetest.conf it returns “foo” instead.

But since a built-in function is always better than a custom function: Is there a way to do the exact same without creating a function for it?

Thanks in advance,
Dirk

[Landrover110]

Hey
is it possible to put out fire in your mod like if i had particals and they touched fire they would set it out ,thanks in advance

Landrover

[tfranko]

How do I get the name of the player running a command? I'm registering a chat command that needs to use the name of the player that's running that command.

When I try to use player:get_player_name() it's apparently returning "a nil value".

I've seen function(player) in a bunch of forum posts and other mods, but I'm not sure how to use that.

Here's some code I'm working with:

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local player_name = player:get_player_name()

minetest.chat_send_player(player_name, 'hello')


So, basically, I just want to point a variable to the player name so I can use it elsewhere. Thanks.

[tfranko]

How do I get the name of the player running a command? I'm registering a chat command that needs to use the name of the player that's running that command.
<snip>

I figured it out. I had to do the following:

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function name_of_my_function(name)
    ...
    minetest.chat_send_player(name, 'hello')
end


Is there documentation somewhere about why this works?

[kaeza]

That's probably because `player` is nil at that point in the script, and you are calling the method `get_player_name` on a nil value (in simple terms, you are trying to get the player name of nothing at all).

If you register a chat command, the function you register as callback will get passed the name of the player directly, so use that.

Example:

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minetest.register_chatcommand("foo", {
  description = "bar",
  params = "",
  func = function(name, params)
    minetest.chat_send_player(name, "Hello, "..name.."!")
  end,
})


[tfranko]

That's probably because `player` is nil at that point in the script, and you are calling the method `get_player_name` on a nil value (in simple terms, you are trying to get the player name of nothing at all).

<snip>

I ended up doing what you're suggesting. I added my code here if you're curious. However, I still don't understand how to use get_player_name(). :) I'll figure it out soon enough.

[Achilles]

When an admin requests a server shutdown on a server, how long will the server shutdown for? or How do you get it back up?

Sorry I've never tried this before and I don't want to mess it up...

[Krock]

When an admin requests a server shutdown on a server, how long will the server shutdown for? or How do you get it back up?

Sorry I've never tried this before and I don't want to mess it up...

It will be down as long nothing restarts the minetest server.

[Landrover110]

To shutdown , backup and restart normaly takes 5 mins but it depends

[Achilles]

When an admin requests a server shutdown on a server, how long will the server shutdown for? or How do you get it back up?

Sorry I've never tried this before and I don't want to mess it up...

It will be down as long nothing restarts the minetest server.

Oh, how do you restart the server?

[Xenon]

Is there a way to register multiblock structures?
Also, is there a way to add different dimensions?
If so, I would love to know!

[Esteban]

Is there a way to register multiblock structures?
Also, is there a way to add different dimensions?
If so, I would love to know!

Do you mean like buildings? If so, this might be helpful: [Mod] Generative architecture [0.1.7] [projects]

[Xenon]

Is there a way to register multiblock structures?
Also, is there a way to add different dimensions?
If so, I would love to know!

Do you mean like buildings? If so, this might be helpful: [Mod] Generative architecture [0.1.7] [projects]

No, I meant if the player builds something in a certain way, the mod know that it is something else.

[Hybrid Dog]

Is there a way to register multiblock structures?
Also, is there a way to add different dimensions?
If so, I would love to know!

Of course, there are lots of ways to register structures with more blocks, you just need to find out the definition for these structures and then put it into lua and test it.
And you can add more dimensions if you want but you would need to edit the source code of minetest. It works with a mod too but it would cause too much lag.

[Xenon]

Is there a way to register multiblock structures?
Also, is there a way to add different dimensions?
If so, I would love to know!

Of course, there are lots of ways to register structures with more blocks, you just need to find out the definition for these structures and then put it into lua and test it.
And you can add more dimensions if you want but you would need to edit the source code of minetest. It works with a mod too but it would cause too much lag.

What do you mean definition?

[Xenon]

Also, would it be possible to have a box with text appear at the top of the screen when you look at something?

[Hybrid Dog]

Is there a way to register multiblock structures?
Also, is there a way to add different dimensions?
If so, I would love to know!

Of course, there are lots of ways to register structures with more blocks, you just need to find out the definition for these structures and then put it into lua and test it.
And you can add more dimensions if you want but you would need to edit the source code of minetest. It works with a mod too but it would cause too much lag.

What do you mean definition?

By definition I mainly mean the way of building the house.

[benedict424]

I have created a mod, but I can't right a post to release it. Is it because I'm a new member or am I missing something else?

[TenPlus1]

Try posting your mod in WIP Mods section...

[rubenwardy]

Post in WIP Mods, and then it can be moved.

[Xenon]

How would you make GUIs show up when you click with a tool?

[Sokomine]

How would you make GUIs show up when you click with a tool?

on_use/on_place in the item/tool's definition for the clicking event, and minetest.show_formspec(playername, formname, formspec) in order to manually show a formspec independent of the block beeing clicked on. You may take a look at my replacer and/or inspection tool in my replacer mod.

[RHR]

visual_scale scales nodes towards the center of the node. This creates 'flying' nodes if visual scale is less than 1. Is there a way to put the scaled node down to the ground?

[b]EDIT: visual_scale was brocken for plantlike nodes:
https://github.com/minetest/minetest/is ... t-60142533

[benedict424]

I'm completly new at lua, so I want to know if this will search for the moreores mod and run moreores.lua if found.

Reason: I want to add support to a mod.

local modnames = minetest.get_modnames()
for i, name in ipairs(modnames) do
-if modnames == "moreores" then
--if minetest.get_modpath("moreores") then
---dofile(moreores_modpath.."/moreores.lua")
--end
-end
end

[gamergardencat]

maybe try something like

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for key,value in myTable do --pseudocode
    value = "foobar"
end


on modnames. I am curious if there might be a better way.

[kaeza]

I'm completly new at lua, so I want to know if this will search for the moreores mod and run moreores.lua if found.

Reason: I want to add support to a mod.

local modnames = minetest.get_modnames()
for i, name in ipairs(modnames) do
-if modnames == "moreores" then
--if minetest.get_modpath("moreores") then
---dofile(moreores_modpath.."/moreores.lua")
--end
-end
end

You don't need that. You must specify "moreores" if it is a hard dependency or "moreores?" if it is an optional dependency in `depends.txt`.

If it is optional, then you only need to check if the mod was actually found:

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if minetest.get_modpath("moreores") then
  -- Do something requiring moreores here.
  -- Don't worry. Moreores is already loaded at this point,
  -- if you specified it as described above.
end


You don't need the `if` if `moreores` is a hard dependency. In that case, do whatever you need to do that requires `moreores` right away.

[pixelface]

Hello,
I'm looing for a way to check if there is water on top or next to a node.
At the moment my corals seem grow on land as well as inside water.

The pink coral grass is not showing up at all, it seems.

Thanks for your help in advance. :)

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minetest.register_abm({
   nodenames = {"default:dirt"},
   neighbors = {"group:water"},
   interval = 45,
   chance = 100,
   action = function(pos)
      pos.y=pos.y+1
      minetest.add_node(pos, {name="korallen:pinkcoral"})
   end,
})

minetest.register_abm({
   nodenames = {"default:dirt"},
   neighbors = {"group:water"},
   interval = 60, -- interval per secnd
   chance = 300, -- propability 1= always
   action = function(pos)
      pos.y=pos.y+1
      minetest.add_node(pos, {name="korallen:bluecoral"})
   end,
})

minetest.register_craftitem("korallen:pink_coral_grass",{
   description = "pink colored coral top",
   inventory_image = "koralle_top_pink.png",
   wield_image = "koralle_top_pink.png"
   --on_drop = function(itemstack, dropper, pos)
   --itemstack:take_item()
   --return itemstack
   })

minetest.register_abm({
   nodenames = {"korallen:pinkcoral"},
   neighbors = {"group:water"},
   interval = 45,
   chance = 50,
   action = function(pos)
      pos.y=pos.y+1
      minetest.add_node(pos, {name="korallen:pink_coral_grass"})
   end,
})



[Xenon]

How do you register a new type of recipe?