Post your modding questions here

[azekill_DIABLO]

Okay thanks!

Code: Select all

--start registering things
minetest.register_on_punchnode(function(pos, node, puncher, pointed_thing, tiles)
	local node = minetest.get_node_or_nil(pointed_thing.under)
	local tilenode = minetest.registered_nodes[node.name].tiles
	print(tilenode[1])
		minetest.add_particlespawner({
			amount = 54,
			time = 0.40,
			minpos = {pos},
			maxpos = {pos},
			minvel = {x = -1, y = -1, z = -1},
			maxvel = {x = 1,  y = 1,  z = 1},
			minacc = {x = -1, y = -4, z = -1},
			maxacc = {x = 1, y = -3, z = 1},
			minexptime = 1,
			maxexptime = 4,
			minsize = 0.5,
			maxsize = 1,
			texture = tilenode[1],
		})
end)

i done something wrong...

[Krock]

Code: Select all

player:getpos(p)
        player:setpos({p.x, 25000, p.z})

.

"getpos" returns a table, takes no arguments. And then again the same coordinate table issue with "setpos". This is how your code could look like:

Code: Select all

local p = player:getpos(p)
player:setpos({x = p.x, y = 25000, z = p.z})

-- Or alternatively
local p = player:getpos(p)
p.y = 25000
player:setpos(p)

i done something wrong...

You did not replace "{node}" with "pos", as I wrote earlier. Remove the brackets, so it will look this way:

Code: Select all

         minpos = pos,
         maxpos = pos,

[ozkur]

Code: Select all

player:getpos(p)
        player:setpos({p.x, 25000, p.z})

.

"getpos" returns a table, takes no arguments. And then again the same coordinate table issue with "setpos". This is how your code could look like:

Code: Select all

local p = player:getpos(p)
player:setpos({x = p.x, y = 25000, z = p.z})

-- Or alternatively
local p = player:getpos(p)
p.y = 25000
player:setpos(p)

i done something wrong...

You did not replace "{node}" with "pos", as I wrote earlier. Remove the brackets, so it will look this way:

Code: Select all

         minpos = pos,
         maxpos = pos,

thanks again!!

[PlanetKiller]

I'm doing some tests with node data, and writing down my findings, but I came across an error.
Here is my tools.lua script in my sketchy mod:

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minetest.register_tool("sketchy:meta_rod", {
	description = "Meta Rod",
	
	inventory_image = "sketchy_meta.png",
	
	on_use = function(itemstack, user, pointed_thing)

		local name = user:get_player_name() 		
		local point = pointed_thing.under
		
		if point then -- check if it is a node/exists 
			local meta = minetest.get_meta(point)
			local tabe = meta:to_table()
			print(dump(meta:to_table()))
			--print(user)
			--print(tabe)
			if minetest.serialize(tabe) then
				local output = minetest.serialize(tabe)
				print(output)
			end
		end
	end

})

Both minetest.serialize(tabe) and print(dump(meta:to_table())) throw a massive error (Can't serialize data of type userdata) when I strike anything with an inventory (furnace, shelves, ect.).
Is this a bug, or is there a graceful way to catch this error?
I'd like to be able to see/change metadata on blocks, even give them metadata on generation.
I'm thinking about swapping the tilled soil with something that can track soil fertility/toxicity.

[Krock]

Both minetest.serialize(tabe) and print(dump(meta:to_table())) throw a massive error (Can't serialize data of type userdata) when I strike anything with an inventory (furnace, shelves, ect.).

Interesting. I'm getting the same error. The stacks seem to be returned as an ItemStack, thus not possible to serialize (Minetest does not know what for an object type it is).

Code: Select all

        inventory = {
                fuel = {
                        <userdata>
                },
                dst = {
                        <userdata>,
                        <userdata>,
                        <userdata>,
                        <userdata>
                },
                src = {
                        <userdata>
                }
        }
}
2016-10-17 19:16:46: ERROR[Main]: ServerError: Lua: Runtime error from mod 'test' in callback Script
ApiItem::item_OnUse(): E:\Programme\minetest\bin\..\builtin\common\serialize.lua:151: Can't serializ
e data of type userdata
2016-10-17 19:16:46: ERROR[Main]: stack traceback:
2016-10-17 19:16:46: ERROR[Main]:       [C]: in function 'error'
2016-10-17 19:16:46: ERROR[Main]:       E:\Programme\minetest\bin\..\builtin\common\serialize.lua:15
1: in function 'dump_or_ref_val'

[azekill_DIABLO]

Code: Select all

player:getpos(p)
        player:setpos({p.x, 25000, p.z})

.

"getpos" returns a table, takes no arguments. And then again the same coordinate table issue with "setpos". This is how your code could look like:

Code: Select all

local p = player:getpos(p)
player:setpos({x = p.x, y = 25000, z = p.z})

-- Or alternatively
local p = player:getpos(p)
p.y = 25000
player:setpos(p)

i done something wrong...

You did not replace "{node}" with "pos", as I wrote earlier. Remove the brackets, so it will look this way:

Code: Select all

         minpos = pos,
         maxpos = pos,

thnkas!

[BirgitLachner]

I wanted to have a formspec defintion where I show some parts depending on a variable. Something like ...

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  			minetest.show_formspec(player_name, "turtleminer:turtle_formspec",
  				"size[9,4]" ..
  				"label[0,0;Click buttons to move the turtle around!]" ..
  				"button_exit[5,1;2,1;exit;Exit]" ..
  				"image_button[1,1;1,1;turtleminer_remote_arrow_up.png;up;]" ..
  				"image_button[2,1;1,1;turtleminer_remote_arrow_fw.png;forward;]"
  				if number >= 3 then 
					"..button[3,1;2,1;digfront;dig front]" ..
					"button[3,3;2,1;digbottom;dig under]" ..
				end
  				"image_button[1,2;1,1;turtleminer_remote_arrow_left.png;turnleft;]"..
  				"image_button[3,2;1,1;turtleminer_remote_arrow_right.png;turnright;]" ..
  				"image_button[1,3;1,1;turtleminer_remote_arrow_down.png;down;]" ..
  				"image_button[2,3;1,1;turtleminer_remote_arrow_bw.png;backward;]"
  				--.. "button[3,3;1,1;build;build]"
  				)

I will have about 5 different possibilites for nearly the same formspecs and it would the best, if I can handle it with one code and only some if-statements.

Thanks!

[azekill_DIABLO]

then use on-reicive_field (oh my orthograph) for activing things after pushing button.

[bell07]

I wanted to have a formspec defintion where I show some parts depending on a variable

just concatenate the string, like

Code: Select all

local spec = "size[9,4]"
spec = spec.."label[0,0;Click buttons to move the turtle around!]"
if something then
   spec=spec.."button1[]"
else
  spec=spec.."otherbutton[]"
end
 minetest.show_formspec(player_name, "turtleminer:turtle_formspec",spec)

[BirgitLachner]

Thanks @bell07

[amadin]

Hi all. Why looking through the transparent texture of colored glass, I do not see another colored glass? This is not always observed-effect (for example this depend on the sequence of different blocks installation), but with some laws. It seems this bug is for different mods with transparent blocks (for example caverealms). I use the code from "xpanes" mod from minetest_game for colored glass. Also this effect available in this mod too viewtopic.php?f=9&t=10456&hilit=glass

[azekill_DIABLO]

links broken sorry.

[amadin]

links broken sorry.

Fixed

[azekill_DIABLO]

Still broken.

[rubenwardy]

partial transparency doesn't work very well

[amadin]

partial transparency doesn't work very well

Maybe is another method for colored glass?

[amadin]

In brewing stand i have one inv:set_size("src", 2) slot for 2 different ingredients (it looks like 2 slots). How check ingredient in the src slot is from my mod or not from my mod, even if placed only one ingredient? Source here http://github.com/amadin/lottpotion/blo ... rewing.lua

[taikedz]

Heyaz

I am trying to define a chest and need to add funcitonality to prevent taking/putting certain items. For now I am testing with this:

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minetest.register_node("interchest:wormhole_chest", {
        description = "Wormhole Chest",
        on_construct = function(pos)
                local meta = minetest.get_meta(pos)
                meta:set_string("formspec",
                                "size[8,9]"..
                                "list[current_player;interchest:wormhole;0,0;8,4;]"..
                                "list[current_player;main;0,5;8,4;]" ..
                                "listring[current_player;interchest:wormhole]" ..
                                "listring[current_player;main]")
                meta:set_string("infotext", "Wormhole Chest")
        end,
        allow_metadata_inventory_put = function(pos, listname, index, stack, player)
                --minetest.chat_send_all(dump(stack))
                return 0 -- deny
        end,
        allow_metadata_inventory_take = function(pos, listname, index, stack, player)
                --minetest.chat_send_all(dump(stack))
                return 0 -- deny
        end,
})

You can see that for now I have defined "return 0" for the put and take callbacks

However these do not seem to get called at all.... I can happily transfer items to and from the chest , even though I expect the return 0 to cause a denial. The chats aren't printed when de-commented either.

Tried in singleplayer, and in multi-player modes...

[orwell]

You see, the inventory location of your 'interchest' inventory is 'current_player'. This inventory belongs to the player and not to the node, so the node callbacks aren't called. AFAIK you can't override allow_* methods for the player inventory. Try to use a detached inventory and set the allow_* methods there.
Approach (not approved)

Code: Select all

register_detached_inventory("interchest_"..pname, {
     allow_put=function (whatever) return 0 end,
     allow_take=function (whatever) return whatelse end,
})
--and
meta:set_string("formspec", "... list[detached:interchest_"..pname..";a,s,o]  ..."

[stu]

I can happily transfer items to and from the chest , even though I expect the return 0 to cause a denial. The chats aren't printed when de-commented either.

If you make changes to a node's formspec after placement then those changes will not take effect until you re-place the node causing on_construct to be re-called. Could that be the problem?

[taikedz]

stu - whilst that was a relevant remakr, it did not resolve the prolem

orwell, I adjusted your code to match what I have, and after digging/replacing the blocks I have.... no chest inventory. Blank space above my player inventory...

Code: Select all

minetest.register_node("interchest:wormhole_chest", {
        description = "Wormhole Chest",                  
        paramtype2 = "facedir", 
        groups = {oddly_breakable_by_hand=2,choppy=3},
        after_place_node = function(pos,player,itemstack,pointedthing)
                local meta = minetest.get_meta(pos)
                local pname = player:get_player_name()
                meta:set_string("formspec",
                                "size[8,9]"..
                                "list[detached;interchest_"..pname..";0,0;8,4;]"..
                                "list[current_player;main;0,5;8,4;]" ..
                                "listring[detached;interchest_"..pname.."]" ..
                                "listring[current_player;main]")
                meta:set_string("infotext", "Wormhole Chest")
        end,
})

minetest.register_on_joinplayer(function(player)
        local pname = player:get_player_name()
        minetest.create_detached_inventory("interchest_"..pname, {
                allow_put=function (inv, listname, index, stack, player) return 0 end,
                allow_take=function (inv, listname, index, stack, player) return 0 end,
        })
end)

[hajo]

Some mods have a file mod.conf, but I found no documentation about that file and its usage.

Can someone explain, or give a pointer to more info ?

[kaeza]

Some mods have a file mod.conf, but I found no documentation about that file and its usage.

Can someone explain, or give a pointer to more info ?

It's a text file containing mod metadata.

At the moment, only the `name` field is used. The engine uses this as the mod's "internal" name. If this is not present, the engine uses the directory name.

Simply create such a file with:

Code: Select all

name = my_mod_name

See also: This topic, original proposal, issue #2201.

[amadin]

deleted. understood by himself

[orwell]

stu - whilst that was a relevant remakr, it did not resolve the prolem

orwell, I adjusted your code to match what I have, and after digging/replacing the blocks I have.... no chest inventory. Blank space above my player inventory...

Code: Select all

minetest.register_node("interchest:wormhole_chest", {
        description = "Wormhole Chest",                  
        paramtype2 = "facedir", 
        groups = {oddly_breakable_by_hand=2,choppy=3},
        after_place_node = function(pos,player,itemstack,pointedthing)
                local meta = minetest.get_meta(pos)
                local pname = player:get_player_name()
                meta:set_string("formspec",
                                "size[8,9]"..
                                "list[detached;interchest_"..pname..";0,0;8,4;]"..
                                "list[current_player;main;0,5;8,4;]" ..
                                "listring[detached;interchest_"..pname.."]" ..
                                "listring[current_player;main]")
                meta:set_string("infotext", "Wormhole Chest")
        end,
})

minetest.register_on_joinplayer(function(player)
        local pname = player:get_player_name()
        minetest.create_detached_inventory("interchest_"..pname, {
                allow_put=function (inv, listname, index, stack, player) return 0 end,
                allow_take=function (inv, listname, index, stack, player) return 0 end,
        })
end)

Please look anywhere how detached inventories work. It seems like the detached inventory has size 0. You need to set it somehow. I don't even know if my definition is right. This was just the approach, no working code.