Post your modding questions here

[hajo]

How do I apply textures to an OBJ model?

with an uv map in the model?!

Ehm....wha?

See Blender, and the wiki about Using blender.

[pithy]

How do I apply textures to an OBJ model?

with an uv map in the model?!

Ehm....wha?

I'm going to guess that you got an obj from someone and you want to apply a texture to it in minetest.
Minetest does not read obj textures instead it uses the texture data from the node def or entity def.
If you have added the texture data properly to the node def or entity def and there is still no texture then there is probably no uv map in the obj.
You could ask someone to add a uv map to the obj or learn Blender.

[orwell]

@GreenDimond: Which software are you using for modeling?

[amadin]

Hi all. I have bottle similar bucket

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minetest.override_item("vessels:glass_bottle", {
   on_use = function(itemstack, user, pointed_thing)

and i have cauldron to collect water in a bottle

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minetest.register_node("lottpotion:cauldron_full",{
        on_punch = function(pos, node, player)
        local player_inv = player:get_inventory()
        local itemstack = player:get_wielded_item()
        if itemstack:get_name() == "vessels:glass_bottle" then


But on_punch for cauldron not work until i not remove on_use for bottle, but i need to draw water into the bottle left mouse button as the bucket. Is any way force to draw water from sea in the bottle and to draw water from cauldron in the bottle with the left mouse button?

[pithy]

@amadin: You could put everything in the on use of the glass bottle.
Use

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 local pos = minetest.get_pointed_thing_position(pointed_thing, above)

to get the location of the node.

[GreenDimond]

I am using VoxelShop, but I also have Blender...I just don't want to use blender. VoxelShop is a heck of a lot easier to use. VoxelShop includes a texture.png for each model, but idk if that is any help...
This is the VoxelShop Minetest Forum post
I know that Minetest DOES use .obj models, because .x is for meshes for entities, and almost every mod that has custom models uses .obj.

[orwell]

I use b3d models...
I don't know how voxelshop works, maybe you ask there how to unwrap the model, if that's even needed.
Ask in the voxelshop thread.

[RHR]

@ GreenDimond you need an UV map to be able to add textures on your 3D model.
https://en.wikipedia.org/wiki/UV_mapping

I don't know how you create an UV map in Voxelshop or if this program even allows to create one, but you could export your model as an obj there, then import it into blender and create the UV map there.

EDIT: btw could you upload this obj and texture file you created in voxelshop? It would make it easier for us to find the problem. :)

[pithy]

@GreenDimond: Nodeboxes can do almost everything a voxel editor can do and you don't have to bother with uv maps.
To make a node box you can use any text editor or the graphical Node Box Editor.
I prefer the text editor method. Standard us keyboard is enough buttons for me.

[GreenDimond]

@ pithy: I was hopping that I could apply a texture easily without having to type out how the texture is supposed to form...I don't even know how to do that :P
@ RHR: Zip file with model and texture is attached. When importing to Blender, yes the model shows up, but idk how to apply the texture from voxelshop and create a UV map with it and apply that UV map to the model. I am not that great a modder yet btw.

[pithy]

@GreenDimond: That model already has a usable uv map. The strangest uv map I have ever seen :P

[GreenDimond]

@pithy well then that's no help |:|

[RHR]

I created a little tutorial how you can attach the texture to your model in blender. I also attached a small mod with it. :)

[DS-minetest]

@GreenDimond: did you make the model or someone else?
uv map

[GreenDimond]

@RHR: OMG thats AMAZING! Ima try that!
@DS-minetest: I made that :D

[ph8jPf9M]

i want to make it so that each time you join the game you get a random welcome message. How can this be done?

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minetest.register_on_joinplayer(function(player)
   minetest.chat_send_all("Welcome1.")
end)

[pithy]

i want to make it so that each time you join the game you get a random welcome message. How can this be done?

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minetest.register_on_joinplayer(function(player)
   minetest.chat_send_all("Welcome1.")
end)

First you would make a table with the welcome messages.

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local messages = {
    "welcome1",
    "welcome2",
    "welcome3",
    "welcome4",
    "welcome5",
    "welcome6"
}


Then use...

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minetest.register_on_joinplayer(function(player)
    local num = math.random(6) -- set number to number of messages.
    minetest.chat_send_all(messages[num])
end)


[ph8jPf9M]

it works! is it posible to change the text color, boldness and such?

[orwell]

Text color: minetest.colorize() (see lua_api.txt)
Bold: currently impossible.

[pithy]

@ph8jPf9M: Do you really want to send the message to all players.
You could just send it to the player that joins.

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minetest.register_on_joinplayer(function(player)
    local num = math.random(6) -- set number to number of messages.
    minetest.chat_send_player(player:get_player_name(), messages[num])
end)


[Hybrid Dog]

You can also set background colour l think.

[lordfingle]

Topic: How to I make a block see-through without seeing through the world?
Reason: I want to make a 3d printer in world....
More Info: I've tried a few drawtypes but I'm not getting anywhere.

[DS-minetest]

look into nodes.lua, what leaves or glass use as group

[pithy]

@lordfingle: I would use drawtype allfaces for that.
@DS-minetest: Your signature uses the word too. I do not think it means what you think it means.

[Linuxdirk]

With the nice “new” configuration UI with the human-readable and technical namens and the categories and the descriptions … is it possible for mods to add their own categories, human-readable namens and descriptions? If yes: can anyone link me a source? If no: why not and (when) will it be implemented?

And a second question. When I created the following helper function what the function does was not possible. Is there a built-in function that achieves the exact same thing as this function?

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

I leave it unexplained so only people who are able to understand the code can answer on this (because I want technical answers on this *g*) :)

[pithy]

@Linuxdirk: To add a setting to the configuration UI see settingtypes.txt in lua_api.txt.

Here is an example settingtypes.txt.

In your mod you would not read what the default setting is, instead you would hardcode null to equal the default setting.

[orwell]

Instead of using g() you can just write
var = minetest.setting_get(value) or default
Much shorter than defining g().

[firefox]

license question:

if i use a mod or parts of a mod in my subgame,
but i edit/change the mod content, what do i write into the "license.txt"?

[DS-minetest]

@DS-minetest: Your signature uses the word too. I do not think it means what you think it means.

is it better now?

[Linuxdirk]

@Linuxdirk: To add a setting to the configuration UI see settingtypes.txt in lua_api.txt.

So settingtypes.txt isn’t for games only but mods can use it, too? But I guess with this I still have to make sure to use some kind of validation of the used configuration option actually exists in minetest.conf, right?

Instead of using g() you can just write
var = minetest.setting_get(value) or default
Much shorter than defining g().

Currently it isn't for better flexibility but g() could be extended to automatically prefix the option. Writing local var = g('parameter', 'default') to me is much shorter than writing local var = minetest.setting_get('my_cool_mod_pefix_parameter') or 'default' …

Of course it makes no sense to use a function when only requesting one or two parameters. But I use this function in my entire mod pack and all of the possible values are configurable through options.