Post your modding questions here

[Dan Duncombe]

I'm doing a mod (the Metal Light mod) and I want to implement a coal fueling feature.Basically, what I want is for the node which is the metallight:lighton to be replaced after 20 min with metallight:lightoff. I know how to do this, but, I was wondering, how do you make it restart by right-clicking it with coal, changing it back to a metallight:lighton and removing 1 coal from your inventory. This whole process needs to loop so so you can refuel it infinite times.

[Dan Duncombe]

Is there any way to make a block heal any player within a 20 block radius? The block name is 'decoblock:eyestone_active'.

[BlockMen]

Is there any way to make a block heal any player within a 20 block radius? The block name is 'decoblock:eyestone_active'.

Yes, it is. Use

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get_objects_inside_radius(pos, radius)

(http://dev.minetest.net/EnvRef)

and

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set_hp(hp)

(http://dev.minetest.net/Player)

[Aqua]

Is it possible to make a player jump higher currently?

[Evergreen]

Is it possible to make a player jump higher currently?

I think so with the new api for the player physics override, but Idk how to do it.

[PilzAdam]

Is it possible to make a player jump higher currently?

I think so with the new api for the player physics override, but Idk how to do it.

Its trivial with set_physics_override().

[1244]

I have problem with rightclick event in register node. This function working ok if I don't hold shift("sneak"). When I hold shift function isn't working. Why?

[kaeza]

I have problem with rightclick event in register node. This function working ok if I don't hold shift("sneak"). When I hold shift function isn't working. Why?

Can you post the code?

[PilzAdam]

I have problem with rightclick event in register node. This function working ok if I don't hold shift("sneak"). When I hold shift function isn't working. Why?

Not calling on_rightclick() when holding shift is a feature. This way you can place nodes when pointing at chests etc.

[jojoa1997]

Is it possible to make torches only be placed on sale and ground by leaving out the ceiling node box?

[Evergreen]

I know this doesn't have to do with mods, but how large is a chunk(otherwise known as block)? And how can I tell that I am on the edge of a chunk?

[jojoa1997]

For the first question it is 16*16*16

[kaeza]

I know this doesn't have to do with mods, but how large is a chunk(otherwise known as block)? And how can I tell that I am on the edge of a chunk?

16³

for the second question, it's just easy math:

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local pos = player:getpos()
local relpos = { x=pos.x % 16, y=pos.y % 16, z=pos.z % 16 }
if relpos.x <= 1 or relpos.x >= 15 or relpos.y <= 1 or relpos.y >= 15 or relpos.z <= 1 or relpos.z >= 15 then
  -- I am at the edge
else
  -- I am not
end


EDIT: Adjust values as necessary.

[PilzAdam]

I know this doesn't have to do with mods, but how large is a chunk(otherwise known as block)? And how can I tell that I am on the edge of a chunk?

As jojoa said, a mapblock is 16x16x16 nodes. However, the map generator always generates 5x5x5 mapblocks at once.

To see if you are at the edge of the mapblock just look at the animation of lava. It is by default not synced (there is a setting for that in minetest.conf), so you can see the mapblock borders.

EDIT: 2500 POSTS!!!!

[shaneroach]

EDIT: 2500 POSTS!!!!

LOL

Somehow you didn't strike me as someone who would get excited about your post totals.

Good jorb, Adam. Good jorb.

[jojoa1997]

I know this doesn't have to do with mods, but how large is a chunk(otherwise known as block)? And how can I tell that I am on the edge of a chunk?

As jojoa said, a mapblock is 16x16x16 nodes. However, the map generator always generates 5x5x5 mapblocks at once.

To see if you are at the edge of the mapblock just look at the animation of lava. It is by default not synced (there is a setting for that in minetest.conf), so you can see the mapblock borders.

EDIT: 2500 POSTS!!!!

why do mapblocks generate 5*5*5 and not 16*16*16

[kaeza]

why do mapblocks generate 5*5*5 and not 16*16*16

DERP

[Evergreen]

Here is something I was working on. What I want is a cauldron that fills with water when right clicked with a bucket of water. I tried this but it doesn't work. Here is the code:

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minetest.register_node("thaumtest:cauldron_full",{
    drawtype="nodebox",
    paramtype = "light",
    tiles = {"default_wood.png"},
    groups = {choppy=2},
    node_box = {
        type = "fixed",
        fixed = {
            {-0.500000,-0.375000,-0.500000,-0.375000,0.500000,0.500000},
            {0.375000,-0.375000,-0.500000,0.500000,0.500000,0.500000},
            {-0.500000,-0.375000,-0.500000,0.500000,0.500000,-0.375000},
            {-0.500000,-0.375000,0.375000,0.500000,0.500000,0.500000},
            {-0.500000,-0.312500,-0.500000,0.500000,0.312500,0.500000},
            {-0.500000,-0.500000,-0.500000,-0.375000,0.500000,-0.375000},
            {0.375000,-0.500000,-0.500000,0.500000,0.500000,-0.375000},
            {0.375000,-0.500000,0.375000,0.500000,0.500000,0.500000},
            {-0.500000,-0.500000,0.375000,-0.375000,0.500000,0.500000},
        }
    }
})

minetest.register_node("thaumtest:cauldron_empty",{
    drawtype="nodebox",
    description= "Cauldron",
    paramtype = "light",
    tiles = {"default_wood.png"},
    groups = {choppy=2},
    node_box = {
        type = "fixed",
        fixed = {
            {-0.500000,-0.375000,-0.500000,-0.375000,0.500000,0.500000},
            {0.375000,-0.375000,-0.500000,0.500000,0.500000,0.500000},
            {-0.500000,-0.375000,-0.500000,0.500000,0.500000,-0.375000},
            {-0.500000,-0.375000,0.375000,0.500000,0.500000,0.500000},
            {-0.500000,-0.500000,-0.500000,-0.375000,0.500000,-0.375000},
            {0.375000,-0.500000,-0.500000,0.500000,0.500000,-0.375000},
            {0.375000,-0.500000,0.375000,0.500000,0.500000,0.500000},
            {-0.500000,-0.500000,0.375000,-0.375000,0.500000,0.500000},
            {-0.500000,-0.375000,-0.500000,0.500000,-0.312500,0.500000},
        }
    }
    on_rightclick = function(pos, node, clicker, itemstack)
            if itemstack:get_name() == "bucket:bucket_water" then
                  minetest.env:set_node(pos, "thaumtest:cauldron_full")
            end
    end
    }
})


[Casimir]

I thougt it would be nice if you could change stack_max using a setting. So game-modes could use minetest.config instead of overwriting.

This is my first try, but it is not working at all:
in builtin/item.lua line 376

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--
-- Item definition defaults
--
local stack_max = 99
if tonumber(minetest.setting_get(stack_max)) then
    stack_max = tonumber(minetest.setting_get(stack_max))
    print("[builtin] stack_max = ".. tonumber(minetest.setting_get(stack_max)) .."")
end

minetest.nodedef_default = {
    -- Item properties
    type="node",
    -- name intentionally not defined here
    description = "",
    groups = {},
    inventory_image = "",
    wield_image = "",
    wield_scale = {x=1,y=1,z=1},
    stack_max = stack_max,
-- . . .


@Evergreen
You need to add a , at the end of the on_rightclick and the nodebox.

[Evergreen]

Tried it and it still doesn't work. Code:

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Code: Select all

minetest.register_node("thaumtest:cauldron_full",{
    drawtype="nodebox",
    paramtype = "light",
    tiles = {"default_wood.png"},
    groups = {choppy=2},
    node_box = {
        type = "fixed",
        fixed = {
            {-0.500000,-0.375000,-0.500000,-0.375000,0.500000,0.500000},
            {0.375000,-0.375000,-0.500000,0.500000,0.500000,0.500000},
            {-0.500000,-0.375000,-0.500000,0.500000,0.500000,-0.375000},
            {-0.500000,-0.375000,0.375000,0.500000,0.500000,0.500000},
            {-0.500000,-0.312500,-0.500000,0.500000,0.312500,0.500000},
            {-0.500000,-0.500000,-0.500000,-0.375000,0.500000,-0.375000},
            {0.375000,-0.500000,-0.500000,0.500000,0.500000,-0.375000},
            {0.375000,-0.500000,0.375000,0.500000,0.500000,0.500000},
            {-0.500000,-0.500000,0.375000,-0.375000,0.500000,0.500000},
        }
    }
})

minetest.register_node("thaumtest:cauldron_empty",{
    drawtype="nodebox",
    description= "Cauldron",
    paramtype = "light",
    tiles = {"default_wood.png"},
    groups = {choppy=2},
    node_box = {
        type = "fixed",
        fixed = {
            {-0.500000,-0.375000,-0.500000,-0.375000,0.500000,0.500000},
            {0.375000,-0.375000,-0.500000,0.500000,0.500000,0.500000},
            {-0.500000,-0.375000,-0.500000,0.500000,0.500000,-0.375000},
            {-0.500000,-0.375000,0.375000,0.500000,0.500000,0.500000},
            {-0.500000,-0.500000,-0.500000,-0.375000,0.500000,-0.375000},
            {0.375000,-0.500000,-0.500000,0.500000,0.500000,-0.375000},
            {0.375000,-0.500000,0.375000,0.500000,0.500000,0.500000},
            {-0.500000,-0.500000,0.375000,-0.375000,0.500000,0.500000},
            {-0.500000,-0.375000,-0.500000,0.500000,-0.312500,0.500000},
        }
    },
    on_rightclick = function(pos, node, clicker, itemstack)
            if itemstack:get_name() == "bucket:bucket_water" then
                  minetest.env:set_node(pos, "thaumtest:cauldron_full")
            end
    end,
    }
})

[kaeza]

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Code: Select all

  (...)
  on_rightclick = function(pos, node, clicker, itemstack)
    if itemstack:get_name() == "bucket:bucket_water" then
      minetest.env:set_node(pos, "thaumtest:cauldron_full")
    end
  end,
  } <-- REMOVE THIS
})

[BlockMen]

Tried it and it still doesn't work. Code:

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Code: Select all

-code-

It is caused by the bucket mod. -> https://github.com/minetest/minetest_game/blob/master/mods/bucket/init.lua#L42

When it is changed to on_use() [in bucket mod] it works fine.
^
Edit: Casimirs solution is better (to use on_punch()).

And it has to be

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  minetest.env:set_node(pos, {name="thaumtest:cauldron_full"})

[Casimir]

Now working:

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local stack_max = 99
if minetest.setting_get("stack_max") then
    stack_max = minetest.setting_get("stack_max")
end

Please interpret this as a pullrequest ;)

@Evergreen
You will encounter an additional problem. The bucket is not calling the on_rightclick function of nodes, it will just place the water. You could use on_punch.
Edit: BlockMen was faster

[Evergreen]

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Code: Select all

  (...)
  on_rightclick = function(pos, node, clicker, itemstack)
    if itemstack:get_name() == "bucket:bucket_water" then
      minetest.env:set_node(pos, "thaumtest:cauldron_full")
    end
  end,
  } <-- REMOVE THIS
})

I looked in the debug, and that is supposed to be there. EDIT: nvm

[Evergreen]

Tried it and it still doesn't work. Code:

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Code: Select all

-code-

It is caused by the bucket mod. -> https://github.com/minetest/minetest_game/blob/master/mods/bucket/init.lua#L42

When it is changed to on_use() [in bucket mod] it works fine.
^
Edit: Casimirs solution is better (to use on_punch()).

And it has to be

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Code: Select all

  minetest.env:set_node(pos, {name="thaumtest:cauldron_full"})

Soon it will not be minetest.env:set_node it will be minetest.set_node. Just something to think about.

[Evergreen]

Getting closer, but now I get an error when punching the cauldron with the bucket.

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12:13:01: ERROR[main]: ServerError: LuaError: error: ...rett/Desktop/Minetest/bin/../mods/thaumtest/init.lua:43: attempt to index local 'itemstack' (a nil value)
12:13:01: ERROR[main]: stack traceback:


[BlockMen]

Getting closer, but now I get an error when punching the cauldron with the bucket.

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Code: Select all

12:13:01: ERROR[main]: ServerError: LuaError: error: ...rett/Desktop/Minetest/bin/../mods/thaumtest/init.lua:43: attempt to index local 'itemstack' (a nil value)
12:13:01: ERROR[main]: stack traceback:


Of cause you get this error, because on_punch gives no itemstack -> https://github.com/minetest/minetest/blob/master/doc/lua_api.txt#L1737

you have to change it to this

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Code: Select all

   on_punch = function(pos, node, puncher)
    if puncher:get_wielded_item():get_name() == "bucket:bucket_water" then
     minetest.env:set_node(pos, {name="thaumtest:cauldron_full"})
    end
  end,

[Evergreen]

Thanks, it works now. The next problem is to empty the bucket when the cauldron is punched. (don't answer this until I have a problem)

[Evergreen]

I have a problem. I tried to do this:

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Code: Select all

on_punch = function(pos, node, puncher)
        if puncher:get_wielded_item():get_name() == "bucket:bucket_water" then
            minetest.env:set_node(pos, {name="thaumtest:cauldron_full"})
            minetest.env:replace({item="bucket:bucket_empty"})
        end
end,


[kaeza]

Getting closer, but now I get an error when punching the cauldron with the bucket.

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Code: Select all

12:13:01: ERROR[main]: ServerError: LuaError: error: ...rett/Desktop/Minetest/bin/../mods/thaumtest/init.lua:43: attempt to index local 'itemstack' (a nil value)
12:13:01: ERROR[main]: stack traceback:


Of cause you get this error, because on_punch gives no itemstack -> https://github.com/minetest/minetest/blob/master/doc/lua_api.txt#L1737

you have to change it to this

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Code: Select all

   on_punch = function(pos, node, puncher)
    if puncher:get_wielded_item():get_name() == "bucket:bucket_water" then
     minetest.env:set_node(pos, {name="thaumtest:cauldron_full"})
    end
  end,

he was using on_rightclick, not on_punch.

minetest.env:replace({item="bucket:bucket_empty"})

wat

Edit:
just do:

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Code: Select all

local inv = puncher:get_inventory()
inv:remove_item("main", itemstack)
itemstack = ItemStack("bucket:bucket_empty")
inv:add_item("main", itemstack)
player:set_wielded_item(itemstack)


Edit 2:
Scratch that, I missed the earlier post about the bucket mod not calling on_rightclick.