Post your modding questions here

[Don]

I am having trouble understanding how to get directions.
What I want to do is get the node to the right. I am not sure how to know the direction the player is looking and get the right or left direction. I know how to get the x, y or z direction but that doesn't work for this.
What I need is this

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Code: Select all

if <node to the right> == "dirt" then

[Kilarin]

node to the right of what? of the player, or of what they are pointing at?

[Don]

node to the right of what? of the player, or of what they are pointing at?

node just placed.
Something like this

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Code: Select all

   after_place_node = function(pos, placer)
       if <node to right> == "dirt" then
          minetest.set_node({x=pos.x, y=pos.y, z=pos.z},{name = "dirt",})

[Hybrid Dog]

node to the right of what? of the player, or of what they are pointing at?

node just placed.
Something like this

Your phone or window isn't wide enough to display the code box. If it's a phone, try rotating it to landscape mode.

Code: Select all

   after_place_node = function(pos, placer)
       if <node to right> == "dirt" then
          minetest.set_node({x=pos.x, y=pos.y, z=pos.z},{name = "dirt",})

try this

Your phone or window isn't wide enough to display the code box. If it's a phone, try rotating it to landscape mode.

Code: Select all

   after_place_node = function(pos, placer)
      local dir = placer:get_look_dir()
      local right_pos = vector.new(pos)
      if math.abs(dir.x) < math.abs(dir.z) then
         right_pos.x = right_pos.x+dir.z/math.abs(dir.z)
      else
         right_pos.z = right_pos.z-dir.x/math.abs(dir.x)
      end
      local right_node = minetest.get_node(right_pos)
      minetest.set_node(pos, right_node)
   end,


[Don]

Thank you.

[Rui]

[DELETED]

[12Me21]

Without utilizing the light source, Is there a way to change the brightness of the air?

I think the only way to do that is to do
light_source = #,

unless you mean the light from the sun...

[Rui]

[DELETED]

[Rui]

[DELETED]

[paramat]

You need to define a node with:
drawtype = "airlike"
walkable = false
paramtype = "light"
light_source = 14 (or whatever level you prefer)

[Rui]

[DELETED]

[paramat]

Also needs:
sunlight_propagates = true
buildable_to = true
pointable = false
diggable = false
These nodes may have to be placed and removed by code not the player.
See the 'mini-sun / pseudo light source' mod.

[Napiophelios]

Can some one give me an example of how to use this in a mod:

"force_facedir: if true, forcefully reset the facedir to north when placing on the floor or ceiling"

I have tried to do it in node registration but it asks for a name and parameters;
I assumed it needed the node name but it says its expecting parameters
and I dont know what to do next.

[Hybrid Dog]

Also needs:
sunlight_propagates = true
buildable_to = true
pointable = false
diggable = false
These nodes may have to be placed and removed by code not the player.
See the 'mini-sun / pseudo light source' mod.

you could also use table.copy(minetest.registered_nodes.air)

Can some one give me an example of how to use this in a mod:

"force_facedir: if true, forcefully reset the facedir to north when placing on the floor or ceiling"

I have tried to do it in node registration but it asks for a name and parameters;
I assumed it needed the node name but it says its expecting parameters
and I dont know what to do next.

minetest.set_node(pos, {name="default:mese", param2=0}

[Napiophelios]

Can some one give me an example of how to use this in a mod:

"force_facedir: if true, forcefully reset the facedir to north when placing on the floor or ceiling"

I have tried to do it in node registration but it asks for a name and parameters;
I assumed it needed the node name but it says its expecting parameters
and I dont know what to do next.

minetest.set_node(pos, {name="default:mese", param2=0}

Okay I used :

on_place= minetest.set_node({name = "minim:shaftbomb", param2=1}),

and the node is successfully placed facing "north" each time,
but it only works if I disable: paramtype2 = "facedir",

As is, a screwdriver doesnt actually turn the node (but the node does function as if it were turned).

Each side of the node depending on it facedir determines the depth/direction of the explosion;

so the player needs to see the turned node when turned by a screwdriver
because the textures are the indicators of depth and direction

and it has to be placed the same each time to give the indicators proper orientation
no matter from what direction they are placed by the player.

what am I missing?

[Hybrid Dog]

Can some one give me an example of how to use this in a mod:

"force_facedir: if true, forcefully reset the facedir to north when placing on the floor or ceiling"

I have tried to do it in node registration but it asks for a name and parameters;
I assumed it needed the node name but it says its expecting parameters
and I dont know what to do next.

minetest.set_node(pos, {name="default:mese", param2=0}

Okay I used :

on_place= minetest.set_node({name = "minim:shaftbomb", param2=1}),

after_place_node = function(pos, player)
if player:get_player_control().sneak then
minetest.set_node(pos, {name="minim:shaftbomb", param2=0}
end
end,

[Don]

Can you get the direction of a node and place a new node facing the same direction with an abm?

This is what I want

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Code: Select all

minetest.register_abm({
   nodenames = {"mymod:node1"},
   interval = 1,
   chance = 1,
   action = function(pos, node)
      local node = minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name


      if node == "air" then
         minetest.set_node(pos,{name = "mymod:node2"})
      end
   end,
})

When node 2 is placed I want it to face the same direction as what node 1 was placed.

[TeTpaAka]

Can you get the direction of a node and place a new node facing the same direction with an abm?

This is what I want

Your phone or window isn't wide enough to display the code box. If it's a phone, try rotating it to landscape mode.

Code: Select all

minetest.register_abm({
   nodenames = {"mymod:node1"},
   interval = 1,
   chance = 1,
   action = function(pos, node)
      local node = minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z}).name


      if node == "air" then
         minetest.set_node(pos,{name = "mymod:node2"})
      end
   end,
})

When node 2 is placed I want it to face the same direction as what node 1 was placed.

You have to set the param2 of the new node to the same value as of the old one. So you would have to

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Code: Select all

minetest.set_node(pos, {name = "mymod:node2", param2 = node.param2})

untested, see lua_api.txt

By the way, you shouldn't name your variable to the same name as a function variable with a different type.

[Don]

Thank you. Works like it should.

[Napiophelios]

after_place_node = function(pos, player)
if player:get_player_control().sneak then
minetest.set_node(pos, {name="minim:shaftbomb", param2=0}
end
end,

Thanks man that did trick :)

[ABJ]

I want to make my own nodes so I need to know which node faces are which on the init.lua code. I know there are 6 faces but I don't know which face is which side so I can't correctly texture. If you would explain this like (face 1=up face 2=down etc) way, It would be very helpful

[Nathan.S]

http://rubenwardy.com/minetest_modding_ ... fting.html
Has a good breakdown on this.

[Hybrid Dog]

I want to make my own nodes so I need to know which node faces are which on the init.lua code. I know there are 6 faces but I don't know which face is which side so I can't correctly texture. If you would explain this like (face 1=up face 2=down etc) way, It would be very helpful

http://dev.minetest.net/register_node#Node_definition
https://github.com/minetest/minetest/bl ... .txt#L2967

[12Me21]

Is there any way to play sounds without using minetest.sound_play?
It's extremely limited (you could do more with command blocks in minecraft)

[12Me21]

I need help making a node that will play MML songs. There's only ONE lua MML player in existence, but IDK if it will work in minetest (probably not). https://github.com/legospacy/lua-mml/bl ... er/mml.lua

Here's my code so far: (without the music playing function)

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Code: Select all

function play_song (pos, fields.sq1, fields.sq2, fields.tri, fields.nsg, fields.tmp)

end

minetest.register_node("mml:nes", {
   description = "NES",
   tiles = {"default_glass.png"},
   paramtype = "light",
   sunlight_propagates = true,
   groups = {oddly_breakable_by_hand=3},
   on_construct = function(pos)
      local meta = minetest.get_meta(pos)
      meta:set_string("sq2", "")
      meta:set_string("sq1", "")
      meta:set_string("tri", "")
      meta:set_string("nsg", "")
      meta:set_string("tmp", "5")
      meta:set_string("formspec", "size[13,16]"..
         "field[1, 1;11,2;sq1; Square Wave 1 ;]".. --[1]
         "field[1, 4;11,2;sq2; Square Wave 2 ;]".. --[2]
         "field[1, 7;11,2;tri; Triangle Wave ;]".. --/\
         "field[1,10;11,2;nsg;Noise Generator;]".. --XZ
         "field[1,13;5,2;tmp;Tempo:;]"..
         "button_exit[7,13;5,2;set;Set]")
      meta:set_string("infotext", "Unprogrammed NES")
   end,
   on_receive_fields = function(pos, formname, fields, sender)
      local meta = minetest.get_meta(pos)
      
      meta:set_string("sq2", fields.sq2)
      meta:set_string("sq1", fields.sq1)
      meta:set_string("tri", fields.tri)
      meta:set_string("nsg", fields.nsg)
      meta:set_string("tmp", fields.tmp)
      atkstr = "size[13,16]"
      if fields.sq1 ~= nil then
      atkstr = atkstr.."field[1, 1;11,2;sq1; Square Wave 1 ;"..minetest.formspec_escape(fields.sq1).."]"
      end
      if fields.sq2 ~= nil then
      atkstr = atkstr.."field[1, 4;11,2;sq2; Square Wave 2 ;"..minetest.formspec_escape(fields.sq2).."]"
      end
      if fields.tri ~= nil then
      atkstr = atkstr.."field[1, 7;11,2;tri; Triangle Wave ;"..minetest.formspec_escape(fields.tri).."]"
      end
      if fields.nsg ~= nil then
      atkstr = atkstr.."field[1,10;11,2;nsg;Noise Generator;"..minetest.formspec_escape(fields.nsg).."]"
      end
      if fields.tmp ~= nil then
      atkstr = atkstr.."field[1,13;5,2;tmp;Tempo:;"..         minetest.formspec_escape(fields.tmp).."]"
      end
      atkstr=atkstr.."button_exit[7,13;5,2;set;Set]"
      meta:set_string("formspec", atkstr)
      meta:set_string("infotext", "Programmed NES")
   end,
   on_punch = play_song(pos, fields.sq1, fields.sq2, fields.tri, fields.nsg, fields.tmp)
})




[ancient_spirit]

How can I script a node to spawn next to another in a set pattern? I'm trying to make a plant that grows.
I'm a rookie programmer, so please keep things simple. Thanks in advance.

[Don]

How can I script a node to spawn next to another in a set pattern? I'm trying to make a plant that grows.
I'm a rookie programmer, so please keep things simple. Thanks in advance.

You could do it in an abm
http://dev.minetest.net/ABM

[Rui]

[DELETED]

[Nathan.S]

I want to create a node that can only be placed on the trunk of a tree, its for collection sap to make into sugar, I can't seem to figure out the code I would need. I just need to check what node I placed the object against, it's wallmounted, and then make sure its default:tree, would also like to check nodes above and below to make sure it's actually a tree and not just a random piece of tree.

[12Me21]

I want to create a node that can only be placed on the trunk of a tree, its for collection sap to make into sugar, I can't seem to figure out the code I would need. I just need to check what node I placed the object against, it's wallmounted, and then make sure its default:tree, would also like to check nodes above and below to make sure it's actually a tree and not just a random piece of tree.

you'd have to make an on_place function.