Post your modding questions here

[burli]

Is it possible to make such a leaf shape? It is a normal leaf node with an oversized plantlike inside

[yzelast]

Is it possible to make such a leaf shape? It is a normal leaf node with an oversized plantlike inside

The nodebox trees have similar leaves, you could take a look on it.
https://forum.minetest.net/viewtopic.php?f=9&t=16292

[D00Med]

Would it be possible to make a copy of the mapgen at a different height without an expensive function?
(I already tried just copying dirt with grass using register_on_generated but it was really slow)

[burli]

You mean a copy of the generated map? How far you will copy? Inside a chunk

[D00Med]

Yeah. Everything

[burli]

Should be fast if you use VoxelManip

[D00Med]

Ok...I should probably learn how then...

[kaeza]

I already tried just copying dirt with grass using register_on_generated but it was really slow

Ok...I should probably learn how then...

Maybe you should post the actual code to see if somebody can suggest improvements?

[sofar]

Does node metadata become compressed?

I'm fairly sure everything on the map is compressed, including entity data as well.

[burli]

I know that nodes have a on_rightclick callback, but I can't find something similar for tools. Is it possible to call a callback function if I make a rightclick with a tool? For example if I want to make different actions with the same tool?

[rubenwardy]

It's on place

[DS-minetest]

It's
on_place = function(itemstack, placer, pointed_thing)
and
on_secondary_use = function(itemstack, user, pointed_thing).
on_place is called when you make rightclick on a node with the item,
on_secondary_use is called when you make rightclick with the item without pointing on any node.
These are not only for tools, I think, they are for every item (craftitem, node, tool).

[burli]

A, ok, it's a little bit confusing that a rightclick callback is sometimes called on_rightclick and sometimes on_place. Doc could be more clear at this point

[EdShouldBeInBed]

Question/ Issue: If I use minetest.register_alias to replace one mods version of a node with another, will the first mod recognize the replacement node for crafting? Where should I put such alias statements?

Reason: In my personal minetest game, I have both Dark Ages and Technic installed. I want to use DA's version of Marble and a few other nodes over technic's in the worldgen, but only if Technic will recognize DA's version for crafting. This applies to other nodes/ ores like rubies (I currently have two versions).

More Info(optional): I'm also wondering where I should put this, in a /mygametweaks folder under the game's mod folder? If I do, do I have to fully define it as a mod with a depends.txt and all?

[TumeniNodes]

This is the code for a drawbridge I was working on a while back...
Never did figure out why I can't walk it?

I can walk along the center for about 2 nodes then... woosh, fall through.

What am I doing wrong? (I should be able to figure this out by now but.... : / )
I just tried again today, but only for about 5 minutes and said "screw it", maybe someone else will see what I did wrong, right off the bat... :P

I also have an obj model but, it works this way... well, visually anyway

Any help will be greatly appreciated... ten-Q

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_node("castle_features:drawbridge_raised", {
   description = "Drawbridge Raised",
   drawtype = "nodebox",
   tiles = {"bridge_timber.png"},
   paramtype = "light",
   paramtype2 = "facedir",
   node_box = {
      type = "fixed",
      fixed = {
         {-2.5, 0.25, 0.25, 2.5, 5.3125, 0.5},
      },
   },
   sounds = default.node_sound_wood_defaults(),
   groups = {choppy=2, wood=1,oddly_breakable_by_hand=3,flammable=3},
   on_rightclick = function(pos, node, puncher)
      minetest.swap_node(pos, {name = "castle_features:drawbridge_lowered", param2 = node.param2})
   end,   
})

minetest.register_node("castle_features:drawbridge_lowered", {
   description = "Drawbridge Lowered",
   drawtype = "nodebox",
   tiles = {"bridge_timber.png"},
   paramtype = "light",
   paramtype2 = "facedir",
   walkable = true,
   node_box = {
      type = "fixed",
      fixed = {
         {-2.5, 0.25, -4.5, 2.5, 0.5, 0.5},
      },
   },
   collision_box = {
      type = "fixed",
      fixed = {
         {-2.5, 0.25, -4.5, 2.5, 0.5, 0.5},
      },
   },
   groups = {choppy=2,wood=1,oddly_breakable_by_hand=3,flammable=3},
   sounds = default.node_sound_wood_defaults(),
   
   on_rightclick = function(pos, node, puncher)
      minetest.swap_node(pos, {name = "castle_features:drawbridge_raised", param2 = node.param2})
   end,
   drop = "castle_features:drawbridge_raised",
})


[sofar]

This is the code for a drawbridge I was working on a while back...
Never did figure out why I can't walk it?

Add a collision box.

[sofar]

Is it possible to make such a leaf shape? It is a normal leaf node with an oversized plantlike inside

make a mesh node (and yes, this is entirely reasonable geometry)

[Byakuren]

This is the code for a drawbridge I was working on a while back...
Never did figure out why I can't walk it?

Add a collision box.

There is a collision box (though only on the lowered bridge), I think Minetest just doesn't detect collisions that far.

[kaeza]

There is a collision box (though only on the lowered bridge), I think Minetest just doesn't detect collisions that far.

Indeed, Minetest has serious bugs with collision boxes >1 node in size.

[sofar]

There is a collision box (though only on the lowered bridge), I think Minetest just doesn't detect collisions that far.

Indeed, Minetest has serious bugs with collision boxes >1 node in size.

Actually, you can go 1 beyond the node itself. This node goes 2.0 beyond it, so the last 1.0 will be buggy.

[sofar]

This is the code for a drawbridge I was working on a while back...
Never did figure out why I can't walk it?

Add a collision box.

There is a collision box (though only on the lowered bridge), I think Minetest just doesn't detect collisions that far.

A more reliable method would be voxelmanip and do multiple nodes.

[Byakuren]

It appears to go 4.5 beyond, but that would just make it worse (more unwalkable space).

[burli]

Is it possible to make such a leaf shape? It is a normal leaf node with an oversized plantlike inside

make a mesh node (and yes, this is entirely reasonable geometry)

I'm using the mesh node from the nodebox trees mod. Works fine. I still have a little flicker and waving doesn't work

[sofar]

I'm using the mesh node from the nodebox trees mod. Works fine. I still have a little flicker and waving doesn't work

waving should not be enabled for most mesh nodes.

The flicker happens because you likely have multiple surfaces exactly in the same place. Try offsetting them by a small (0.001) value or rotating by 1 degree

[TumeniNodes]

A more reliable method would be voxelmanip and do multiple nodes.

Hmmm, I have not ventured into using voxelmanip yet. I'd be interested to take a look at it, could you point me in the right direction so I don't have to hunt it down? :P

Do you think this method may work? Or, is this a lost cause for now?

There is a collision box (though only on the lowered bridge), I think Minetest just doesn't detect collisions that far.

The reason the collision box is only on the lowered bridge, is because I was focusing on getting it to work on that first.

I made a portcullis using the same code (somewhat), and when it is down, there is only a small space on each end which is passable...
But it really doesn't pose a big issue with that object.

And thank you both for looking at this and the suggestions.

edit: I found the info for voxelmanip but there's a slight problem...

[burli]

A more reliable method would be voxelmanip and do multiple nodes.

Hmmm, I have not ventured into using voxelmanip yet. I'd be interested to take a look at it, could you point me in the right direction so I don't have to hunt it down? :P

You can take a look at this. It is a simple example that replaces air with glass.

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_on_generated(function(minp, maxp)
   local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
   local a = VoxelArea:new({MinEdge = emin, MaxEdge = emax})
   local data = vm:get_data()
   local c_air = minetest.get_content_id("air")
   local c_ignore = minetest.get_content_id("ignore")
   local c_glass = minetest.get_content_id("default:glass")
   local csize = vector.add(vector.subtract(maxp, minp), 1)
   for z = minp.z, maxp.z do
   for y = minp.y, maxp.y do
   for x = minp.x, maxp.x do
      local vi = a:index(x, y, z)

      if data[vi] == c_air or data[vi] == c_ignore then
         data[vi] = c_glass
      end
   end
   end
   end

   vm:set_data(data)
   vm:write_to_map()
end)

[TumeniNodes]

A more reliable method would be voxelmanip and do multiple nodes.

Hmmm, I have not ventured into using voxelmanip yet. I'd be interested to take a look at it, could you point me in the right direction so I don't have to hunt it down? :P

You can take a look at this. It is a simple example that replaces air with glass.

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_on_generated(function(minp, maxp)
   local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
   local a = VoxelArea:new({MinEdge = emin, MaxEdge = emax})
   local data = vm:get_data()
   local c_air = minetest.get_content_id("air")
   local c_ignore = minetest.get_content_id("ignore")
   local c_glass = minetest.get_content_id("default:glass")
   local csize = vector.add(vector.subtract(maxp, minp), 1)
   for z = minp.z, maxp.z do
   for y = minp.y, maxp.y do
   for x = minp.x, maxp.x do
      local vi = a:index(x, y, z)

      if data[vi] == c_air or data[vi] == c_ignore then
         data[vi] = c_glass
      end
   end
   end
   end

   vm:set_data(data)
   vm:write_to_map()
end)

Thank you very much burli.

Well, looks like I'm going back to school again :P
I keep thinking "maybe I should stop experimenting... it keeps getting me into trouble...."

Then I think "Nah... it's too much fun" : /

Though, I think some of us have an odd idea of "fun" :D

[burli]

you can also look in trees.lua. The old trees use Voxelmanip. Just look into default.grow_tree()

[TumeniNodes]

you can also look in trees.lua. The old trees use Voxelmanip. Just look into default.grow_tree()

but, is voxelmanip particularly reserved for generated map features then?
can it be applied to an object which will open and close?

I'm just gonna go read the info... see how confused I can make myself :D

[burli]

can it be applied to an object which will open and close?

Not sure what you mean. Any example?

The idea of VoxelManip is, that you can get a part of the map (a chunk or a part of the chunk) as array. You can change the data in this array and write it back. But the chunk has to be generated first and the area has to be inside the chunk plus the surrounding shell of 16 nodes (emin, emax)