FOSS gamedev and creative worlds

1) Fast privilege can inhibit antcheater?
I want to allow players to run on my server, but I believe that this can open a security hole. Maybe I'm wrong and anticheater works normally.

2) It is possible to check whether it is possible to add a list of items simultaneously in the inventory of a player?

minetest.register_node("rocket:pod", {
description = " Rocket Control Pod",
tiles = {"top.png", "pad.png", "pod.png"},
groups = {cracky = 1},
on_punch = function(pos,node,player,pointed_thing)
tank = minetest.get_node({pos.x, pos.y-1, pos.z})
engine = minetest.get_node({pos.x, pos.y-2, pos.z})
pad = minetest.get_node({pos.x, pos.y-3, pos.z})
if tank == "rocket:tankfull" and engine == "rocket:engine" and pad == "rocket:pad" then
--player:get_pos(p)
--player:set_pos({p.x, 25000, p.z})
--player:set_physics_override(1, 1, 0.17)
--player:set_sky({0, 0, 0}, "skybox"})
--minetest.remove_node({pos.x, pos.y-1, pos.z})
--minetest.remove_node({pos.x, pos.y-2, pos.z})
--minetest.remove_node(pos)
minetest.chat_send_all("Hello World!")
end
end
})


i'm having troubles with get_node() Please help

ozkur wrote:[...]
i'm having troubles with get_node() Please help

You are comparing a string to a table:

Looks like you want to compare the `name` field of the node:


Edit: For clarification: `get_node` returns a table, which you assign to `tank` here. Same with `engine` and others in that conditional.

As another tip, you most likely want to make `tank`, `engine`, etc. local to the function. This not only yields better performance (as slight as it may be), but it will prevent obscure bugs in the future should another mod need to use globals with those names.

Hello,

I would like to know how to use minetest.register_on_player_receive_fields() when it is a node's formspec.
What would be the name of that form?

I know that with:

you specify a "formname" which usually is the way to detect on the callback. But how to do it when the formspec is set to a node? Like the following:



Does this formspec has a name?

Thanks,
zorman2000

zorman2000 wrote:Hello,

I would like to know how to use minetest.register_on_player_receive_fields() when it is a node's formspec.
What would be the name of that form?

I know that with:

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.show_formspec(username, formname, formspec)

you specify a "formname" which usually is the way to detect on the callback. But how to do it when the formspec is set to a node? Like the following:

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 meta = minetest.get_meta(pos)
meta:set_string("formspec", formspec)


Does this formspec has a name?

Thanks,
zorman2000

No, also node formspecs don't trigger the global formspec callbacks, only the node's callback.

old

how can i make drop item size bigger from the atachment to this https://youtu.be/DY6yVnyquxg?t=6m59s with particles and sound emiting from it?

Block I said goodbye.
Two major projects will be discontinued:

• Creatures MOB-Engine
• Hud hunger

I use these mods on my server, but I need to change them. What are the best options to replace?

BrunoMine wrote:Block I said goodbye.
Two major projects will be discontinued:

• Creatures MOB-Engine
• Hud hunger

I use these mods on my server, but I need to change them. What are the best options to replace?

For HUD hunger there is hbhunger, which uses hudbars.

You can fork them

Can someone help me? it is supposed to make a formspec pop on first join, but it makes the game crashes.

azekill_DIABLO wrote:

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.show_formspec(player:get_player_name(), "start_screen", formspec)
-- ...


Can someone help me? it is supposed to make a formspec pop on first join, but it makes the game crashes.

Probably because the formspec argument is nil. I'll leave you to figure that out.

i should use 'local formspec' no?

You could put start_screen instead of formspec.

kaeza, maybe formspec is defined somewhere before that code and the crash is caused by a missing default mod

Missing default mod? i have it :) it's taken from mt game (not the lastest)



seems weird. it was shown like that on the dev wiki!

EDIT: ok i understand


now says me: missing ') 'at line 7

Hybrid Dog wrote:kaeza, maybe formspec is defined somewhere before that code and the crash is caused by a missing default mod

No. The error in the code is pretty obvious. I just gave him a hint so he actually reads his code and figures what he's doing wrong. It is fine to ask for solutions to problems, but the question sounded (to me, at least) like he's just copy-pasting without actually trying to understand the thing.

thanks :|
(i dind't copy pasted the code and look at my second post: i corrected my first error but i won't understand the thing after that.)

If you call a function you do not need to put an "end", e.g. or and not
but if you put a function you need an end, e.g. or

Anyway, l assume your overlooked that there's an "end" after calling minetest.show_formspec in your code.

oh? sorry and thanks :)

My attempt at helping with everamzah's coal grenade mod.
Copy the code into an init.lua and open up minetest with mod enabled, type /giveme grenade:grenade 3. The first two grenades will work perfectly, but the last one, (in each stack) doesn't. It's mysterious and beyond me. How even is such a ridiculous bug possible?

ABJ wrote:

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 def = {
   name = "grenade:explosion",
   description = "Grenade Explosion (you hacker you!)",
   radius = 3,
   tiles = {
      side = "default_dirt.png",
      top = "default_dirt.png",
      bottom = "default_dirt.png",
      burning = "default_dirt.png"
   },
}

tnt.register_tnt(def)



minetest.register_craftitem("grenade:grenade", {
   description = "Grenade",
   inventory_image = "default_coal_lump.png",
   on_use = function(itemstack, user, pointed_thing)
      local v = user:get_look_dir()
      local pos = user:getpos()
      pos.y = pos.y + 1.2

      local obj = minetest.add_entity(pos, "grenade:grenade_flight")
      obj:setvelocity({x = v.x * 4, y = v.y * 2 + 2, z = v.z * 4})
      obj:setacceleration({x = v.x / 4, y = v.y / 2 - 4, z = v.z / 4})

      itemstack:take_item()
      return itemstack
   end,
})

minetest.register_entity("grenade:grenade_flight", {
    physical = true,
   collide_with_objects = true,
   weight = 5,
   textures = {"default_coal_lump.png"},
   on_activate = function(self, staticdata)
      self.timer = 2
   end,
   on_step = function(self, dtime)
      local acc = self.object:getacceleration()
      self.object:setacceleration({x = acc.x * 2 / 4, y = acc.y, z = acc.z * 2 / 4})

      self.timer = self.timer + dtime
      if self.timer > 4 then
         tnt.boom(self.object:getpos(), def)
      end
   end,
})

minetest.register_craft({
    output = "grenade:grenade",
   recipe = {
            {"", "group:stick", ""},
          {"group:wood", "default:coal_lump", "group:wood"},
          {"", "group:wood", ""}
                
   }





})


My attempt at helping with everamzah's coal grenade mod.
Copy the code into an init.lua and open up minetest with mod enabled, type /giveme grenade:grenade 3. The first two grenades will work perfectly, but the last one, (in each stack) doesn't. It's mysterious and beyond me. How even is such a ridiculous bug possible?

I don't have an answer but, it could be considered a feature because it is realistic :D This actually happens in real life...

What the?
How is this realistic? Do people in real life have to "stack" grenades for them to work? LOL

is it possible to attach a particlespawner to an object (0.4.14-dev)? if yes, how?

No, not yet. There is a PR (https://github.com/minetest/minetest/pull/4409) but it has not been pulled.

ok, thx

:( Why TumeniNodes?
Now I'm just gonna have to repeat my question.

ABJ wrote:

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 def = {
   name = "grenade:explosion",
   description = "Grenade Explosion (you hacker you!)",
   radius = 3,
   tiles = {
      side = "default_dirt.png",
      top = "default_dirt.png",
      bottom = "default_dirt.png",
      burning = "default_dirt.png"
   },
}

tnt.register_tnt(def)



minetest.register_craftitem("grenade:grenade", {
   description = "Grenade",
   inventory_image = "default_coal_lump.png",
   on_use = function(itemstack, user, pointed_thing)
      local v = user:get_look_dir()
      local pos = user:getpos()
      pos.y = pos.y + 1.2

      local obj = minetest.add_entity(pos, "grenade:grenade_flight")
      obj:setvelocity({x = v.x * 4, y = v.y * 2 + 2, z = v.z * 4})
      obj:setacceleration({x = v.x / 4, y = v.y / 2 - 4, z = v.z / 4})

      itemstack:take_item()
      return itemstack
   end,
})

minetest.register_entity("grenade:grenade_flight", {
    physical = true,
   collide_with_objects = true,
   weight = 5,
   textures = {"default_coal_lump.png"},
   on_activate = function(self, staticdata)
      self.timer = 2
   end,
   on_step = function(self, dtime)
      local acc = self.object:getacceleration()
      self.object:setacceleration({x = acc.x * 2 / 4, y = acc.y, z = acc.z * 2 / 4})

      self.timer = self.timer + dtime
      if self.timer > 4 then
         tnt.boom(self.object:getpos(), def)
      end
   end,
})

minetest.register_craft({
    output = "grenade:grenade",
   recipe = {
            {"", "group:stick", ""},
          {"group:wood", "default:coal_lump", "group:wood"},
          {"", "group:wood", ""}
                
   }





})


My attempt at helping with everamzah's coal grenade mod.
Copy the code into an init.lua and open up minetest with mod enabled, type /giveme grenade:grenade 3. The first two grenades will work perfectly, but the last one, (in each stack) doesn't. It's mysterious and beyond me. How even is such a ridiculous bug possible?

I'm getting a strange crash to desktop after an on_punch function. Debug shows this:



Any suggestions?

Hi all,

Anyone who knows this information will help me a lot!

Is there a limit to the "interval" property when registering an Active Block Modifier? I have registered an ABM and would like it to run every 0.2 seconds or similar with a chance of 1 (I know this could be laggy but the blocks are very limited) and replace a block and set another. However, when I test, I see that blocks are being set at an aprox. 1 second interval.

Is there an internal limit to the ABM interval?

Thanks,
zorman2000

zorman2000 wrote:Hi all,

Anyone who knows this information will help me a lot!

Is there a limit to the "interval" property when registering an Active Block Modifier? I have registered an ABM and would like it to run every 0.2 seconds or similar with a chance of 1 (I know this could be laggy but the blocks are very limited) and replace a block and set another. However, when I test, I see that blocks are being set at an aprox. 1 second interval.

Is there an internal limit to the ABM interval?

Thanks,
zorman2000

Yes ABMs have a 1 second interval limit. You can use LBMs and globalsteps to get around this.
See my wireworld mod for an example.

pithy wrote:Yes ABMs have a 1 second interval limit. You can use LBMs and globalsteps to get around this.
See my wireworld mod for an example.

Thanks! I have thought of doing it through globalstep... will try! Thanks for your mod as reference!