FOSS gamedev and creative worlds

Posted: **Thu Dec 11, 2014 06:13**

Thanks for reply!

Posted: **Sat Dec 13, 2014 04:08**

Is there a way to make a player, invisible? This could be a cool game mechanic or even be used as a way to be an invisible dungeon master, so to speak.

It would be fun to float around, spawn mobs and make life hell for players.

Posted: **Sat Dec 13, 2014 16:03**

Hi,
I wanted to make a mod with a liquid.
I looked at the minetest.register_node of water/lava in the nodes.lua of the minetest game, and defined my liquid with similiar attributes.
Only problem is: The liquid source does not...well...produce liquid, it just stands there like a normal node.
I tried finding a part of code which looks like it makes the water/lava sources spread their respective liquid, but I found nothing.

Here's my code:

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Code: Select all: oil_VISC = 1 minetest.register_node("dystopia:rohoel_source", { tiles = {"rohoel_source.png"}, walkable = false, pointable = false, diggable = false, buildable_to = true, drop = "", drowning = 1, liquidtype = "source", groups = {water=3, liquid=3, flammable=3}, }) minetest.register_node("dystopia:rohoel_flowing", { tiles = {"rohoel_source.png"}, paramtype = "flowingliquid", walkable = false, pointable = false, diggable = false, buildable_to = true, drop = "", drowning = 1, liquidtype = "flowing", groups = {water=3, liquid=3, flammable=10}, })

Can someone tell me how to make the stuff spread/flow?

Posted: **Sat Dec 13, 2014 16:14**

Merlin wrote:Can someone tell me how to make the stuff spread/flow?

You need on define a flowing liquid.
Use those codes for it:

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Code: Select all: drawtype = "flowingliquid", liquid_alternative_flowing = "dystopia:rohoel_flowing", liquid_alternative_source = "dystopia:rohoel_source",

Also define "liquid_alternative_flowing/source" in your liquid source node.

Posted: **Sat Dec 13, 2014 16:21**

Here is the code for an oil mod I was working on. Hope it helps.

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Code: Select all: minetest.register_node("mystreets:oil_flowing", { description = "Flowing Oil", inventory_image = minetest.inventorycube("mystreets_oil.png"), drawtype = "flowingliquid", tiles = {"mystreets_oil.png"}, special_tiles = { { image="mystreets_oil_flowing_animated.png", backface_culling=false, animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=4.0} }, { image="mystreets_oil_flowing_animated.png", backface_culling=true, animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=4.0} }, }, alpha = 250, paramtype = "light", paramtype2 = "flowingliquid", walkable = false, pointable = false, diggable = false, buildable_to = true, drop = "", drowning = 1, liquidtype = "flowing", liquid_alternative_flowing = "mystreets:oil_flowing", liquid_alternative_source = "mystreets:oil_source", liquid_viscosity = 3, liquid_renewable = false, liquid_range = 3, post_effect_color = {a=250, r=0, g=0, b=0}, groups = {liquid=3, not_in_creative_inventory=1}, }) minetest.register_node("mystreets:oil_source", { description = "Oil Source", inventory_image = minetest.inventorycube("mystreets_oil.png"), drawtype = "liquid", light_source = 14, tiles = { {name="mystreets_oil_source_animated.png"} }, special_tiles = { { name="mystreets_oil_source_animated.png", animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=4.0}, backface_culling = false, } }, alpha = 250, paramtype = "light", walkable = false, pointable = true, diggable = true, buildable_to = true, drop = "mystreets:oil", drowning = 1, liquidtype = "source", liquid_alternative_flowing = "mystreets:oil_flowing", liquid_alternative_source = "mystreets:oil_source", liquid_viscosity = 3, liquid_renewable = false, liquid_range = 2, damage_per_second = 1, post_effect_color = {a=250, r=0, g=0, b=0}, groups = {liquid=3, crumbly=2, not_in_creative_inventory=1}, })

Posted: **Sun Dec 14, 2014 13:18**

Thanks you two, liquid's now happily flow around. :D

Posted: **Thu Dec 18, 2014 18:12**

Hi all,
I want to change the size of the inventory of the player.
Is there a limit to the size of the inventory?
I can exceed 32 slot?
for example:
'list [current_player; main; 0.5; 10.5;]'

Posted: **Thu Dec 18, 2014 19:57**

pandaro wrote:Hi all,
I want to change the size of the inventory of the player.
Is there a limit to the size of the inventory?
I can exceed 32 slot?
for example:
'list [current_player; main; 0.5; 10.5;]'

Yes, you need to set the size of the "main" list in the player's inventory. For example, from an `on_joinplayer` callback:

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_on_joinplayer(function(player) local inv = player:get_inventory() inv:set_size("main", 50) end)

Posted: **Thu Dec 18, 2014 20:04**

kaeza wrote:
pandaro wrote:Hi all,
I want to change the size of the inventory of the player.
Is there a limit to the size of the inventory?
I can exceed 32 slot?
for example:
'list [current_player; main; 0.5; 10.5;]'

Yes, you need to set the size of the "main" list in the player's inventory. For example, from an `on_joinplayer` callback:

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_on_joinplayer(function(player) local inv = player:get_inventory() inv:set_size("main", 50) end)

Thanks Kaeza, it works

Posted: **Sat Dec 20, 2014 12:45**

I can't believe I have to ask, *bangs head on desk* but here goes.

minetest.register_chat_command

Not working.

Code below, but one thing I struggle with is the parameter after the command. For example I want to enter the command like this "/jump 5". I want that command to set the set_physics_overide to jump value 5. However I don't see a variable in the register_chat_command for variables.

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Code: Select all: minetest.register_chat_command("jump", { params="Enter a value to increase jump height", description="Speed: Modify the speed of the player", func = function(name,param) local player=minetest.get_player_by_name(name) if not player then return false, "Player not found" end player:set_physics_override(jump=param) )

/time is a good example where it takes a variable. I looked at the wiki and there doesn't seem to be an example for this scenario. When I get an answer can I add the example to the wiki or does someone else have to ?

Posted: **Sat Dec 20, 2014 12:52**

leeminer wrote:I can't believe I have to ask, *bangs head on desk* but here goes.

minetest.register_chat_command

Not working.

Code below, but one thing I struggle with is the parameter after the command. For example I want to enter the command like this "/jump 5". I want that command to set the set_physics_overide to jump value 5. However I don't see a variable in the register_chat_command for variables.

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_chat_command("jump", { params="Enter a value to increase jump height", description="Speed: Modify the speed of the player", func = function(name,param) local player=minetest.get_player_by_name(name) if not player then return false, "Player not found" end player:set_physics_override(jump=param) )

/time is a good example where it takes a variable. I looked at the wiki and there doesn't seem to be an example for this scenario. When I get an answer can I add the example to the wiki or does someone else have to ?

l saw that you forgot the brackets of the table.
Here's an example https://github.com/HybridDog/extrablock ... mt.lua#L51

And before player:set_physics_override({jump=param}) l would add
param = tonumber(param)
if not param then
return
end

Posted: **Sat Dec 20, 2014 13:00**

Well, debug.txt has a new error.
Bad news is, its useless to me.

"06:58:34: ERROR[main]: ======= END OF ERROR FROM LUA ========
06:58:34: ERROR[main]: Server: Failed to load and run C:\Users\Elissa\Desktop\Lee\minetest-0.4.10\bin\..\mods\leemod\init.lua
06:58:34: ERROR[main]: ModError: ModError: Failed to load and run C:\Users\Elissa\Desktop\Lee\minetest-0.4.10\bin\..\mods\leemod\init.lua"

Posted: **Sat Dec 20, 2014 14:22**

leeminer wrote:Well, debug.txt has a new error.
Bad news is, its useless to me.

"06:58:34: ERROR[main]: ======= END OF ERROR FROM LUA ========
06:58:34: ERROR[main]: Server: Failed to load and run C:\Users\Elissa\Desktop\Lee\minetest-0.4.10\bin\..\mods\leemod\init.lua
06:58:34: ERROR[main]: ModError: ModError: Failed to load and run C:\Users\Elissa\Desktop\Lee\minetest-0.4.10\bin\..\mods\leemod\init.lua"

to me it's useless, too

Posted: **Sat Dec 20, 2014 20:33**

leeminer wrote:Well, debug.txt has a new error.
Bad news is, its useless to me.

"06:58:34: ERROR[main]: ======= END OF ERROR FROM LUA ========
06:58:34: ERROR[main]: Server: Failed to load and run C:\Users\Elissa\Desktop\Lee\minetest-0.4.10\bin\..\mods\leemod\init.lua
06:58:34: ERROR[main]: ModError: ModError: Failed to load and run C:\Users\Elissa\Desktop\Lee\minetest-0.4.10\bin\..\mods\leemod\init.lua"

Do you have the part above "END OF ERROR FROM LUA"?
(I think the phrase "END OF ERROR" should have tipped you off,but anyway...)

Posted: **Sat Dec 20, 2014 22:57**

Yes, you should include that in the error report. That is where everything important for debugging is.

Posted: **Sun Dec 21, 2014 12:32**

It is register_chatcommand, not register_chat_command. Just in case.

Use tonumber() to convert the param to a number - jump = tonumber(param)

Posted: **Mon Dec 22, 2014 00:51**

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: xyz = "<X>,<Y>,<Z>" minetest.register_alias("device", "quiet:console") minetest.register_chatcommand("xyz", { params = "<X>,<Y>,<Z>", description = "set destination for console", func = function(name, param) xyz = params minetest.chat_send_all(name.." sets the value to "..param) end, }) minetest.register_node("quiet:console", { texture = "png.png" on_punch = function(name, xyz) local function find_free_position_near(xyz) local tries = { {x=1,y=0,z=0}, {x=-1,y=0,z=0}, {x=0,y=0,z=1}, {x=0,y=0,z=-1}, } for _, d in ipairs(tries) do local p = {x = pos.x+d.x, y = pos.y+d.y, z = pos.z+d.z} local n = core.get_node_or_nil(p) if n and n.name then local def = core.registered_nodes[n.name] if def and not def.walkable then return p, true end end end return pos, false end end })

I can't seem to make this work. It runs registering a bock and a command but they ignore each other refusing to teleport me.

Posted: **Mon Dec 22, 2014 06:55**

In on_punch you register a local function but don't call it. Remove the line whith local function and the end.

Posted: **Mon Dec 22, 2014 07:37**

DeepGaze 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
xyz = "<X>,<Y>,<Z>" ... func = function(name, param) -> xyz = params minetest.chat_send_all(name.." sets the value to "..param)

You set it to a nil value.

Posted: **Mon Dec 22, 2014 12:34**

Krock wrote:
DeepGaze 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
xyz = "<X>,<Y>,<Z>" ... func = function(name, param) -> xyz = params minetest.chat_send_all(name.." sets the value to "..param)

You set it to a nil value.

and pos is nil, too (or should be nil)

Posted: **Mon Dec 22, 2014 16:41**

Thanks all I really appreciate it. I caught the register_chat_command error on my part, should be register_chatcommand.

I fixed that but still problems, I will use your other suggestions and keep you updated. Feel so frustrated becasue this SHOULD be so easy. But I guess its part of the learning process..

Will try at home later and update you all on this.

Once I figure something out I like to share so others don't go through this pain ;)

Posted: **Mon Dec 22, 2014 20:03**

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 PLAYER_COOLDOWN = 1 minetest.register_alias("device", "quiet:key") minetest.register_chatcommand("xyz", { params = "<X>,<Y>,<Z>", description = "set xyzination for console", func = function(name, param) xyz = param minetest.chat_send_all(name.." sets the value to "..param) end, }) minetest.register_tool("quiet:key", { texture = "png.png", tool_capabilities = {}, on_use = function(itemstack, user, pos, xyz) local xyz = {param} user:setpos(xyz) end }) minetest.register_chatcommand("sos", { description = "save you from falling into nil", func = function(pos, name) name:setpos({x = 0, y = 0, z = 0}) end })

I am still confused

+ also does anyone recognise this coding language

Posted: **Mon Dec 22, 2014 20:05**

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 PLAYER_COOLDOWN = 1 minetest.register_alias("device", "quiet:key") minetest.register_chatcommand("xyz", { params = "<X>,<Y>,<Z>", description = "set xyzination for console", func = function(name, param) xyz = param minetest.chat_send_all(name.." sets the value to "..param) end, }) minetest.register_tool("quiet:key", { texture = "png.png", tool_capabilities = {}, on_use = function(itemstack, user, pos, xyz) local xyz = {param} user:setpos(xyz) end }) minetest.register_chatcommand("sos", { description = "save you from falling into nil", func = function(pos, name) name:setpos({x = 0, y = 0, z = 0}) end })

I am still confused

+ also does anyone recognise this coding language

Posted: **Tue Dec 23, 2014 11:17**

Hello there,
Each generating is made in "y line" which means height, so I have question. Is possible to make genereating in "x/z line" ?

1- Spawn point / 0
2- x=posx+200, z=posz+200
3- x=posx+400, z=posz+400
4- x=posx+600, z=posz+600

So someone can generate ores in distance 200 - 400 from spawn etc.

Posted: **Tue Dec 23, 2014 12:54**

AMMOnym wrote:Hello there,
Each generating is made in "y line" which means height, so I have question. Is possible to make genereating in "x/z line" ?

1- Spawn point / 0
2- x=posx+200, z=posz+200
3- x=posx+400, z=posz+400
4- x=posx+600, z=posz+600

So someone can generate ores in distance 200 - 400 from spawn etc.

Of course, yes, you could also e.g. generate sea everywhere at math.hypot(x,z) > 1000.

Posted: **Tue Dec 23, 2014 17:26**

Hybrid Dog wrote:
AMMOnym wrote:Hello there,
Each generating is made in "y line" which means height, so I have question. Is possible to make genereating in "x/z line" ?

1- Spawn point / 0
2- x=posx+200, z=posz+200
3- x=posx+400, z=posz+400
4- x=posx+600, z=posz+600

So someone can generate ores in distance 200 - 400 from spawn etc.

Of course, yes, you could also e.g. generate sea everywhere at math.hypot(x,z) > 1000.

Thanks a lot, can you show me any mod, which use that ? It will help me a lot

Posted: **Tue Dec 23, 2014 20:42**

AMMOnym wrote:
Hybrid Dog wrote:
AMMOnym wrote:Hello there,
Each generating is made in "y line" which means height, so I have question. Is possible to make genereating in "x/z line" ?

1- Spawn point / 0
2- x=posx+200, z=posz+200
3- x=posx+400, z=posz+400
4- x=posx+600, z=posz+600

So someone can generate ores in distance 200 - 400 from spawn etc.

Of course, yes, you could also e.g. generate sea everywhere at math.hypot(x,z) > 1000.

Thanks a lot, can you show me any mod, which use that ? It will help me a lot

Maybe this one
viewtopic.php?f=11&t=8066
or
viewtopic.php?f=11&t=6128

Posted: **Fri Dec 26, 2014 14:41**

Lets say I wanted to suggest new mobs or something, how do you make/what program do you use to make the graphics and is there a scripting/coding tutorial here?

Posted: **Wed Dec 31, 2014 11:51**

Still trying to understand register_chatcommand

Here are two examples from worldedit mod.

minetest.register_chatcommand("/unmark", {
params = "",
description = "Hide markers if currently shown",
privs = {worldedit=true},
func = function(name, param)
local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
worldedit.pos1[name] = nil
worldedit.pos2[name] = nil
worldedit.mark_pos1(name)
worldedit.mark_pos2(name)
worldedit.pos1[name] = pos1
worldedit.pos2[name] = pos2
worldedit.player_notify(name, "region unmarked")
end,
})

minetest.register_chatcommand("/pos1", {
params = "",
description = "Set WorldEdit region position 1 to the player's location",
privs = {worldedit=true},
func = function(name, param)

What I don't understand so far is why the functioins don't do anything. Seems like a half baked function definition...

Here is an example from the ambiance mod

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_chatcommand("mvol", { params = "<mvol>", description = "set volume of music, default 1 normal volume.", privs = {server=true}, func = function(name, param)

How does the command, actually change the volume? This is bugging me ;)

Posted: **Wed Dec 31, 2014 12:52**

leeminer wrote:Still trying to understand register_chatcommand

Here are two examples from worldedit mod.

minetest.register_chatcommand("/unmark", {
params = "",
description = "Hide markers if currently shown",
privs = {worldedit=true},
func = function(name, param)
local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
worldedit.pos1[name] = nil
worldedit.pos2[name] = nil
worldedit.mark_pos1(name)
worldedit.mark_pos2(name)
worldedit.pos1[name] = pos1
worldedit.pos2[name] = pos2
worldedit.player_notify(name, "region unmarked")
end,
})

minetest.register_chatcommand("/pos1", {
params = "",
description = "Set WorldEdit region position 1 to the player's location",
privs = {worldedit=true},
func = function(name, param)

What I don't understand so far is why the functioins don't do anything. Seems like a half baked function definition...

Here is an example from the ambiance mod

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_chatcommand("mvol", { params = "<mvol>", description = "set volume of music, default 1 normal volume.", privs = {server=true}, func = function(name, param)

How does the command, actually change the volume? This is bugging me ;)

It runs the function func, which sets the musicvolume, which is also used by other functions, to param.
https://github.com/HybridDog/MinetestAm ... t.lua#L754

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