Post your modding questions here

[TumeniNodes]

ehem... speaking of doors. Would anyone be able to give the nodebox/selection box coords to set doors to the center of blocks, and when open they come a bit into the next node space?
I realize not many like the idea but I would like it for personal use and I do not know how to use the / positions I'm to used to 0.5 type positions.
I already tried it a few times and cannot get it to work, I think mainly due to the hidden part for the hinges.
I also realize some may feel this will break things but I will take full blame on myself if it does :P

it's entirely possible - this is how the fence gate works. But yes, the top door part is an issue, you'll have to make a top door half to create the proper collision box.

Thank you sofar, I'll give it a try again.

[D00Med]

Did you forget to add `doors` to `depends.txt` ?

Nope, it's there.

[Desour]

Code: Select all

local minp = {x=pos.x-5, y=pos.y, z=pos.z-5}
local maxp = {x=pos.x+5, y=pos.y, z=pos.z+5}
local doors = minetest.find_nodes_in_area(minp, maxp, "group:door")
for i = 1, #doors do
	local dpos = {x=doors[i].x, y=doors[i].y, z=doors[i].z}
	local door = doors.get(dpos)
	door:toggle(player)
end

Why does this keep crashing the game? I get this error: "attempt to call field 'get' (a nil value)"
It doesn't happen when there is no door in the area. I did get it to work after using only one position.

maybe you should name the table not doors, like this:

Code: Select all

local minp = {x=pos.x-5, y=pos.y, z=pos.z-5}
local maxp = {x=pos.x+5, y=pos.y, z=pos.z+5}
local doorss = minetest.find_nodes_in_area(minp, maxp, "group:door")
for i = 1, #doorss do
	local dpos = {x=doorss[i].x, y=doorss[i].y, z=doorss[i].z}
	local door = doors.get(dpos)
	door:toggle(player)
end

[Hybrid Dog]

Alternatively you could use following:
local door = _G.doors.get(dpos)

[JackWilliam]

Topic: How to add texture
Reason: I have an error
More Info(optional): hello everyone . I followed the tutorial but I don't understand. I call the image tutorial_decowood end the code is that :

Code: Select all

minetest.register_node("tutorial:decowood", {
	tile_images = {"tutorial_decowood.png"},
	groups={level=1},
})

and the error is :

Code: Select all

ERROR[main]: generateImage(): could not load image "tutorial_decowood.png" while building texture
ERROR[main]:  generateImage(): Creating a dummy image for "tutorial_decowood.png" 

Can anyone help me?

[sofar]

maybe you should name the table not doors

ahh yeah, I didn't spot that error. You just overwrote the `doors` global this way.

This kind of programming stuff can be found by luacheck. I strongly recommend you start learning how to use it - it really helps you find bugs early.

[D00Med]

Oh ok, thankyou

[Desour]

@JackWilliam:
as you can see in lua_api.txt line 3713:

Code: Select all

tiles = {tile definition 1, def2, def3, def4, def5, def6}, --[[
^ Textures of node; +Y, -Y, +X, -X, +Z, -Z (old field name: tile_images)
^ List can be shortened to needed length ]]

=> its called "tiles", not "tile_images"

[JackWilliam]

thanks DS-minetest, I have modified the code, but the error is still there.
the node in game is like this:

error.PNG (757.56 KiB) Viewed 772 times

and the color change when I restart minetest or when I try to mine the node.

[Krock]

and the color change when I restart minetest or when I try to mine the node.

This error happens when the texture could not be found.
Check or create a texture at the location mods/tutorial/textures/tutorial_decowood.png. Make sure it's exactly that path, otherwise Minetest will not be able to find the texture.

[Tmanyo]

Is there a way to tie detached inventories into meta data?

[JackWilliam]

This error happens when the texture could not be found.
Check or create a texture at the location mods/tutorial/textures/tutorial_decowood.png. Make sure it's exactly that path, otherwise Minetest will not be able to find the texture.

Yes I know but the path is correct. Can be the editor?? I use Geany.

[Napiophelios]

try making a folder in the texture pack directory and place the image there too.
then select your new "texture pack" when you start the game.

Almost every time I get this error it's because I mispelt something somewhere.

[Nyarg]

as much as i know you cant save metadata in entities but you could save something in staticdata

It's looks like metadata ~= staticdata ?

... ObjectRef
... get it's luaentity (the lua table that is "self" ...)
... write stuff into it.

Thank you all now it works )
But little question still yet. What exactly data of entity will be saved in world file when server shutdown ?
Is wiki have somewhere the explanation what data structures will be save ?

Some mods and get_staticdata() seems like only scripter need carry about save and init each entity with unique data.

[Desour]

to save data from the entity for the next load you use the get_staticdata function
return <what you need (only strings, to make tables to strings use minetest.de-/serialize, note: this doesnt work with userdata)>
then write into the on_activate(self, staticdata, dtime_s)
and use staticdata as the returned string

[ManElevation]

can some one write a block lua script. just a plain block
with a {"front.png"} a {"side.png"} and a {"top.png"} {"back.png"}

a full one pleas

[Napiophelios]

can some one write a block lua script. just a plain block
with a {"front.png"} a {"side.png"} and a {"top.png"} {"back.png"}
a full one pleas

test_node.zip

basic block nodes

(124.31 KiB) Downloaded 60 times

basic_blocks.png (174.38 KiB) Viewed 772 times

[GreenXenith]

For my Sandplus Mod, I would like to add an ability to have a recipe canceled and replaced with a grinder recipe if the technic mod is enabled. I know I would have to use something along the lines of "if minetest.get_modpath("technic") then...", and somewhere in there the technic grinding recipe (table.insert(recipes, {"modname:node1", "modname:node2"})), but I don't know how to do this. Help?
EDIT: I think I got it :P

[BrunoMine]

Is there a way to track the status of a player?

For example, if the player is in a car, bed, boat, helicoter and others.

Is there a unified way of checking this sort of thing?
I'd like to know how to control these things to prevent a player from being able to make and control multiple cars simultaneously, or even crash the server.

[JackWilliam]

try making a folder in the texture pack directory and place the image there too.
then select your new "texture pack" when you start the game.

Almost every time I get this error it's because I mispelt something somewhere.

Thanks a lot, now it works fine. I have another question, how can I put a node on the map such as the diamond block, coal, gold, etc.?

[yzelast]

hi guys,i have a few questions about node timers.

If a timer end in an unloaded mapblock what will happen with the code inside the on_timer function?
And how i do to make a node timer stop decreasing on night, and return to decrease on day?

If i could pause the timers at night my trees mod will benefits a lot,making the growing more precise.

[sofar]

hi guys,i have a few questions about node timers.

If a timer end in an unloaded mapblock what will happen with the code inside the on_timer function?
And how i do to make a node timer stop decreasing on night, and return to decrease on day?

If i could pause the timers at night my trees mod will benefits a lot,making the growing more precise.

You can't dynamically put code in `on_timer()`, it has to be known at init time, so the code is always known no matter what.

The default trees in the game use node timers and if the timer elapses during the night, the growth is attempted again and again every 2 minutes or so until light levels are in order.

Postponing a node timer is possible, but not on unloaded blocks, so you need to do this in the `on_timer()` function.

If a node timer expires while the block is unloaded, the node timer code for that node is run as soon as the block is loaded. Unlike ABM's, nodetimers are never skipped.

Making a node timer stop decreasing at night is pretty much not possible, not reliably anyway. You're better off finding an algorithm that works for you that doesn't require that type of mechanism.

[yzelast]

hi guys,i have a few questions about node timers.

If a timer end in an unloaded mapblock what will happen with the code inside the on_timer function?
And how i do to make a node timer stop decreasing on night, and return to decrease on day?

If i could pause the timers at night my trees mod will benefits a lot,making the growing more precise.

You can't dynamically put code in `on_timer()`, it has to be known at init time, so the code is always known no matter what.

The default trees in the game use node timers and if the timer elapses during the night, the growth is attempted again and again every 2 minutes or so until light levels are in order.

Postponing a node timer is possible, but not on unloaded blocks, so you need to do this in the `on_timer()` function.

If a node timer expires while the block is unloaded, the node timer code for that node is run as soon as the block is loaded. Unlike ABM's, nodetimers are never skipped.

Making a node timer stop decreasing at night is pretty much not possible, not reliably anyway. You're better off finding an algorithm that works for you that doesn't require that type of mechanism.

Thanks,i think that my mod will not care if a tree grow at night,taking the right time is enough for me.
I asked about the timers because i don't want to face unexpected behavior with it, because my entire mod is basically timers and abm's

[petra2201]

Topic: Where to put code for stairs.
Reason: I've made a mod for indestructible obsidian and my stairs keep blowing up.

In all my other nodes I can put code in the code block marked minetest.register_node.
However in stairs that codeblock is listed in an if else and no matter where I put my code in the code blocks my stairs keep blowing up. The rest of my nodes (block, door, glass) work great.

[TumeniNodes]

Topic: Where to put code for stairs.
Reason: I've made a mod for indestructible obsidian and my stairs keep blowing up.

In all my other nodes I can put code in the code block marked minetest.register_node.
However in stairs that codeblock is listed in an if else and no matter where I put my code in the code blocks my stairs keep blowing up. The rest of my nodes (block, door, glass) work great.

do stairs register instead. stairs is a separate mod from default