FOSS gamedev and creative worlds

Posted: **Fri May 24, 2013 23:16**

Hello everyone!
The scriptapi in the source code of the engine was moved into a subfolder. This is a huge change in the engine structure and was mostly done by sapier with some tweaks by celeron55 and kahrl. The end-users will most likely not notice anything from this change.

Modders should note, that env functions are now in the global minetest table, that means one calls a function now like 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: minetest.<function>

instead of

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.env:<function>

The old way will be supported for a long while, though, so mods don't break.

Everyone who has a pull request that touches the scriptapi in the engine should rebase it to the new system.

Also the functions minetest.env:add_firefly() and minetest.env:add_rat() are removed, since they are marked as deprecated for a long time and had no functionality.

Posted: **Sat May 25, 2013 13:14**

It would be good if announcements also had a link to a github revision whenever practical

Posted: **Sat May 25, 2013 13:21**

lmgtfy
https://github.com/minetest/minetest/commit/ab433775777c4f5055bcf4d2a1cffc506c4f9961

Posted: **Sat May 25, 2013 23:49**

Huhboy, this is going to make a ton of mods not work. It is a good idea though.

Posted: **Sat May 25, 2013 23:53**

Evergreen wrote:Huhboy, this is going to make a ton of mods not work. It is a good idea though.

No mods break. The old way will be supported for a long time.

Posted: **Sun May 26, 2013 00:09**

PilzAdam wrote:
Evergreen wrote:Huhboy, this is going to make a ton of mods not work. It is a good idea though.

No mods break. The old way will be supported for a long time.

Ah okay.

Posted: **Sun May 26, 2013 03:07**

There seems to be a trick for more speed:

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 env = minetest.env ... env:add_node({x=x,y=y,z=z},{name="default:stone"})

How would i retain the benefit of this trick?

Posted: **Sun May 26, 2013 03:40**

This should do the trick:

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 add_node = minetest.add_node add_node({x=x,y=y,z=z},{name="default:stone"})

Posted: **Sun May 26, 2013 04:45**

Ah cool ... thank you!

Posted: **Tue May 28, 2013 19:02**

kaeza wrote:This should do the trick:
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 add_node = minetest.add_node add_node({x=x,y=y,z=z},{name="default:stone"})

I'm curious, why does this make adding a node faster? Also, I am assuming that this trick would work for the function set_node as well (what exactly is the difference between add_node and set_node anyway, or is there a difference?).

Posted: **Tue May 28, 2013 19:29**

Jonathan wrote:
kaeza wrote:This should do the trick:
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 add_node = minetest.add_node add_node({x=x,y=y,z=z},{name="default:stone"})

I'm curious, why does this make adding a node faster? Also, I am assuming that this trick would work for the function set_node as well (what exactly is the difference between add_node and set_node anyway, or is there a difference?).

lua-api.txt wrote:minetest.add_node(pos, node): alias set_node(pos, node)

Posted: **Tue May 28, 2013 19:40**

PilzAdam wrote:
Jonathan wrote:
kaeza wrote:This should do the trick:
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 add_node = minetest.add_node add_node({x=x,y=y,z=z},{name="default:stone"})

I'm curious, why does this make adding a node faster? Also, I am assuming that this trick would work for the function set_node as well (what exactly is the difference between add_node and set_node anyway, or is there a difference?).

lua-api.txt wrote:minetest.add_node(pos, node): alias set_node(pos, node)

Did they used to be different? I was curious as to why there was two functions.

Posted: **Tue May 28, 2013 20:38**

Jonathan wrote:
kaeza wrote:This should do the trick:
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 add_node = minetest.add_node add_node({x=x,y=y,z=z},{name="default:stone"})

I'm curious, why does this make adding a node faster?

In scripting languages practically everything is a hash map (Javascript,Python,Lua,Ruby,etc). This means "minetest.add_node" performs a lookup into a hash map to get the method called "add_node" from the minetest object. By storing the method in a local variable, you do this lookup only once.

Nevertheless, unless you call the method hundreds or thousands of times, I bet there will be no measurable performance difference.

Posted: **Tue May 28, 2013 20:44**

qznc wrote:
Jonathan wrote:
kaeza wrote:This should do the trick:
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 add_node = minetest.add_node add_node({x=x,y=y,z=z},{name="default:stone"})

I'm curious, why does this make adding a node faster?

In scripting languages practically everything is a hash map (Javascript,Python,Lua,Ruby,etc). This means "minetest.add_node" performs a lookup into a hash map to get the method called "add_node" from the minetest object. By storing the method in a local variable, you do this lookup only once.

Nevertheless, unless you call the method hundreds or thousands of times, I bet there will be no measurable performance difference.

Thanks for the info. :)

FOSS gamedev and creative worlds

[0.4.7] ScriptAPI separation

[0.4.7] ScriptAPI separation