Post your modding questions here

[Ackirb]

Of course not. I'm just a bit stumped. I am semi-familiar with how to create inventories for items (such as chests), and I'm quite familiar with the code for doors. Based on that, I could make a door that also functions as a chest lol. But I just can't seem to figure out how to make the door look for a specific item in its inventory, and only open when said item is present.

I keep taking a look at the wiki though![/quote]
I think some already did something like that. It's a lock and key door.[/quote]

They did. If you have a key in your inventory, you can open the door.
But what I want is for the door itself to have an inventory. You open this inventory and add a specified item(s), and then the door will open.

[Ackirb]

Hello
I am looking to create a block that replaces a certain block with another one within a radius.
For example, it would replace all of the "default:wood" blocks with "default:stone" within a 100-node radius of itself.

This is what I have, but it doesn't work. Any ideas? (feel free to completely scrap what I have if necessary)

minetest.register_abm({
nodenames = "forcefield:switch_on",
interval = 1,
chance = 1,
action = function(pos, nodenames)
local obj = minetest.find_node_near(pos, 1000, "forcefield:forcefield") --trying to replace this node
minetest.set_node(obj, "forcefield:forcefield_on") --with this one
end
})

[Topywo]

nodenames = "forcefield:switch_on",

Not sure if this is causing it not to work, but I place brackets (or however those are called) around the nodenames:

nodenames = {"forcefield:switch_on"},



Edit: Typo

[Kilarin]

I've got a fork of PilzAdam's cart mod that I want to publish as cartsplus. So I renamed everything from carts to cartsplus, and it works just fine. BUT, I'd like to make it so that when you include the cartsplus mod, all carts created under the old carts mod (carts:cart) become cartsplus carts (cartsplus:cartplus)

From some advice I thought that minetest.register_alias("name", "convert_to") would do this. so I put at the top of the cartsplus init.lua:

minetest.register_alias("carts:cart", "cartsplus:cartplus")

But... it does nothing. old carts in the game or your inventory still run the old carts code and do not stack with new carts. Creative inventory shows two types of carts. new carts work fine, but the old carts still work as old carts.

So, am I misunderstanding what register_alias is supposed to do, or am I just using it incorrectly? Or does it only work with nodes, not entities?

Thanks in advance for your help.

[Krock]

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("mymod:name_is_too_long", def)
minetest.register_alias("mymod:name_is_too_long", "nameistoolong")

/giveme nameistoolong
Added mymod:name_is_too_long to the inventory.


[Kilarin]

Krock: Thanks for the attempt, but I'm not certain I understand how to apply that to overriding the cart entity. Sometimes I'm a bit slow. :)

This:

minetest.register_alias("carts:touringrail", "cartsplus:touringrail")

works fine. But carts:touringrail is no longer defined. Aliasing it to cartsplus:touringrail makes any touringrails that were defined when they were in the carts mod work great. BUT, attempting to override the existing carts:cart chokes. Is it impossible to use register_alias to override an existing entity in another mod?

[PilzAdam]

I've got a fork of PilzAdam's cart mod that I want to publish as cartsplus. So I renamed everything from carts to cartsplus, and it works just fine. BUT, I'd like to make it so that when you include the cartsplus mod, all carts created under the old carts mod (carts:cart) become cartsplus carts (cartsplus:cartplus)

From some advice I thought that minetest.register_alias("name", "convert_to") would do this. so I put at the top of the cartsplus init.lua:

minetest.register_alias("carts:cart", "cartsplus:cartplus")

But... it does nothing. old carts in the game or your inventory still run the old carts code and do not stack with new carts. Creative inventory shows two types of carts. new carts work fine, but the old carts still work as old carts.

So, am I misunderstanding what register_alias is supposed to do, or am I just using it incorrectly? Or does it only work with nodes, not entities?

Thanks in advance for your help.

Why don't you submit a pull request to my carts mod?

[Kilarin]

Why don't you submit a pull request to my carts mod?

Would LOVE to, I PM'd you about whether you were interested in the changes and didn't get a response, so I thought you weren't interested. I'll figure out how to do a pull and execute it today.

[PilzAdam]

Why don't you submit a pull request to my carts mod?

Would LOVE to, I PM'd you about whether you were interested in the changes and didn't get a response, so I thought you weren't interested. I'll figure out how to do a pull and execute it today.

Oh, new PMs are rather invisible with this new forum software, sorry for not seeing them.
I probably have time to review your code at the next weekend.

[Kilarin]

sorry for not seeing them.

Nothing to apologize for!

I probably have time to review your code at the next weekend.

Thank you, I really appreciate the time taken. It takes a lot of time and work to review someone elses code.

[Ackirb]

nodenames = "forcefield:switch_on",

Not sure if this is causing it not to work, but I place brackets (or however those are called) around the nodenames:

nodenames = {"forcefield:switch_on"},



Edit: Typo

I tried that as well, and no luck. I think it may be a problem with the functions

minetest.register_abm({
nodenames = "forcefield:switch_on",
interval = 1,
chance = 1,
action = function(pos, nodenames)
local obj = minetest.find_node_near(pos, 1000, "forcefield:forcefield") --trying to replace this node
minetest.set_node(obj, "forcefield:forcefield_on") --with this one
end
})

I know that minetest.find_node_near returns a list of positions of the indicated nodes. As you can see, I am using that as a variable (obj), and plugging it into minetest.set_node.
Normally, the parameter for minetest.set_node is (pos, nodename). But I substituted pos with the obj variable....
is that why it won't work?

[Casimir]

nodenames is a table, so it must have brackets, even if there is only one element. In your function I think the problem is with set_node. 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

local pos_found = minetest.find_node_near(pos, 1000, "forcefield:forcefield") --trying to replace this node
minetest.set_node(pos_found, {name="forcefield:forcefield_on"}) --with this one


[Daven]

Can someone please post a link to the worldedit mod? It would be really helpful. Thanks.
Also, can you help me with the mod for adding a hungerbar to the world?

[paramat]

minetest.register_abm({
nodenames = "forcefield:switch_on",
interval = 1,
chance = 1,
action = function(pos, nodenames)
local obj = minetest.find_node_near(pos, 1000, "forcefield:forcefield") --trying to replace this node
minetest.set_node(obj, "forcefield:forcefield_on") --with this one
end
})

If it works it might be slow with a radius of 1000, 'find node near' is very slow even with a small radius.

[Topywo]

Can someone please post a link to the worldedit mod? It would be really helpful. Thanks.
Also, can you help me with the mod for adding a hungerbar to the world?

viewtopic.php?f=11&t=572

You can find most mods under Mod Releases, the most common used ones on the first pages.

[Ackirb]

minetest.register_abm({
nodenames = "forcefield:switch_on",
interval = 1,
chance = 1,
action = function(pos, nodenames)
local obj = minetest.find_node_near(pos, 1000, "forcefield:forcefield") --trying to replace this node
minetest.set_node(obj, "forcefield:forcefield_on") --with this one
end
})

If it works it might be slow with a radius of 1000, 'find node near' is very slow even with a small radius.

Hmmm - good to know. Any other suggestions?

[Krock]

Hmmm - good to know. Any other suggestions?

Try voxelmanip, maybe it's faster.

[Kilarin]

So, I'm working on my own variation of TeTpaAka's awsome variation of Echo's really cool compass mod.

In order to update the compass, the original mod does a register_globalstep. But, if I am understanding this, the globastep just keeps running every cycle no matter what. If you take the compass out of your active inventory and drop it into your main inventory, the globalstep keeps running. If you put the compass into a chest and leave the region, the globalstep keeps running.

I'd LIKE for the globalstep to only run when the compass in in your active inventory. No reason to have it sucking cpu cycles when the compass isnt where you could see it. BUT, it seems to me that doing a scan at the top of the global step to see if your active inventory contains the compass would actually eat up more cpu than just leaving it as is.

Is there any way to trigger a function whenever an item is MOVED within inventory? That way I could check to see if the compass is in active inventory only when you move it, and turn off the globalstep if its not, and turn it back on if it is.

Thanks,

[Hybrid Dog]

Is there any way to trigger a function whenever an item is MOVED within inventory? That way I could check to see if the compass is in active inventory only when you move it, and turn off the globalstep if its not, and turn it back on if it is.

I don't know exactly, I think the locked_chest does something with something like on_inventory_put.

[Kilarin]

I'll look at that, thank you.

Next stupid question. I've got a formspec that previously had a dropdown and a button:

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

"dropdown[0,1.5;8;bookmark_list;"..list..";0]"..
"button[0,2.3;5,1;find_bookmark;find selected bookmark]"

And I want to change it to a textlist:

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

"textlist[0,1.5;5,8;bookmark_list;"..list..";1]"..
"button[0,6.3;5,1;find_bookmark;find selected bookmark]"


Now, using the dropdown code, I'm able to run minetest.register_on_player_receive_fields

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

if fields["find_bookmark"] then
  compass.find_bookmark(name, fields["bookmark_list"])
end


And it works just fine. But when I switch to textlist, my formspec comes up and looks great, and I'm able to select a bookmark and click on "find", but in register_on_player_recieve_fields, while the find_bookmark button is set, bookmark_list is nil.

Doesn't textlist return the value selected in it the same as dropdown does?

Thanks,

Edit: Figured a few things out since I posted the question
textlist fires as soon as you click on any element in the list, dropdown does NOT return it's results until you have clicked a button.
dropdown returns the actual string selected, textlist returns CHG:<index of item selected>

[Kilarin]

well, with a lot of work and what I suspect is some really stupid coding, I can get the textlist to find a particular bookmark whenever you click on it. (simply bypassing the find bookmark button, which is actually good)

But this still leaves me with a nonfunctioning system. Because I need to be able to select an item from the list, and then click "remove bookmark"

It seems baffling to me that a textlist field does not return the value selected in it when you click a button in the same form. Am I doing something wrong here?

[Kilarin]

Well, the workaround to the textlist problem is obvious. when the user clicks on an item in the textlist, I'll store that item in a variable, and then when the click a button, I'll use the variable to determine what item is currently selected in the textlist. It should work, but it's not elegant.

It seems to me that this is a bug. textlist should work in a manner similar to the dropdown. It should return the element selected, not the index of that element. and it should return the currently selected element when you ask for it after a button has been pressed instead of nil as it currently does.

EDIT:
Interesting, I changed my code a bit, and now textlist is NOT returning nil when you click a button, but it's passing back the value of the 1st element in the list even though a different element was selected. very strange.

[paramat]

When i place light sources by voxelmanip their light level is correct but the light does not spread, is there a good way to update the lighting? I tried updating lighting using an ABM to remove then re'place' (not 'add') a light source, but that causes the node to drop down 1 node. I'm thinking of requesting 'update_lighting()' be added to the voxelmanip.

[Kilarin]

I changed my code a bit, and now textlist is NOT returning nil when you click a button, but it's passing back the value of the 1st element in the list even though a different element was selected. very strange.

I'm a moron. It was a bug in my code making it pass back the value of the first element. (I had two fields with the same name) Once corrected, the textlist behaves as it did before. It returns the index when you click on it, and returns nil if you query the field when a button is pressed. Very different (and less useful) behavior from dropdown which returns the value of the selected item, and will return it when queried after a button is pressed.

[Hybrid Dog]

When i place light sources by voxelmanip their light level is correct but the light does not spread, is there a good way to update the lighting? I tried updating lighting using an ABM to remove then re'place' (not 'add') a light source, but that causes the node to drop down 1 node. I'm thinking of requesting 'update_lighting()' be added to the voxelmanip.

I currently use update_map with a second "manip" to fix light, liquids and show the "trees".
https://github.com/HybridDog/minetest-n ... it.lua#L82

[DaN]

How does sound work in Minetest 0.4? I want to try replicating it in MT 0.2.

[paramat]

Thanks Hybrid Dog. I may have realised why light sources cannot be spread at chunk generation time. Since their light range is 16 nodes there would be lighting errors over chunk edges, so it's best light sources spread their light when all neighbouring chunks are generated. Perhaps this is why update_map() is only found in one version of voxelmanip.
Now i'm using nodeupdate(pos) in an abm on light sources, works well, would also be fun to cause unstable sand to collapse.

[GaryLaw64]

Help!

Installing mods on ubuntu.

Linux issue rather than minetest I know.

wiki page is very clear for windows installation, and it all makes complete sense. Installed and activated a number of mods. Linux does not want to let me see the files graphically likie windows.

Can anyone help with the command lines in linux to move the folders I have downloaded and renamed to the right place.

Is there a linux pro out there? Cos I can find the minetest application but no other folders.

AAAAARRRRGGGGHHHHHH!

Linux noob, but getting there. Before someone asks, I refuse to run the game on my xp computer cos the graphics are waaaay better with my linux setup.

[Topywo]

Linux does not want to let me see the files graphically likie windows.

Afaik Ubuntu has a file manager (under accessoires) and a folder icon in the task bar.

Where did you get your minetestversion from (link)?

[Evergreen]

Help!

Installing mods on ubuntu.

Linux issue rather than minetest I know.

wiki page is very clear for windows installation, and it all makes complete sense. Installed and activated a number of mods. Linux does not want to let me see the files graphically likie windows.

Can anyone help with the command lines in linux to move the folders I have downloaded and renamed to the right place.

Is there a linux pro out there? Cos I can find the minetest application but no other folders.

AAAAARRRRGGGGHHHHHH!

Linux noob, but getting there. Before someone asks, I refuse to run the game on my xp computer cos the graphics are waaaay better with my linux setup.

First of all, yes, you shold be able to see files "graphically". Use the default file manager. And as for the mods, how did you install minetest? If your version is below 0.4.0 no mods are compatible.