LUA Questions

o_imbrifer · 09-18-2006, 11:24 PM

Well, I have some questions about LUA for new game types and such, so I figured I'd make a thread so everyone could post questions about LUA, since im sure lots of mappers have them.

1. Is it possible to have a 'grav gun' for just one map?

2. Can you give flags properties like damage over time?

3. Is it possible to make corpses into prop_physics after the player dies?

4. Can you attach physics objects to different parts of players?

Circuitous · 09-19-2006, 01:22 AM

2 I'm certain can be done, the others I could only speculate.

o_nezumi · 09-19-2006, 10:37 PM

Here's my question:

1. Please explain LUA.

It's not so much a question I guess.

o_imbrifer · 09-20-2006, 01:03 AM

I knew the two of you would hop in this thread pretty quick.

I guess a general question about LUA would be:

5. What can you not change?

For example (with my corpses question): Can we change what is serverside clientside? Can we change physics or fundamental game mechanics? Could I make it so every player is followed around by a pink frog? Could I make one map an entire mod/total conversion of FF?

Mulchman MM · 09-20-2006, 02:20 PM

Yeah, sorry for never responding to your second pm :P

mirvin_monkey · 09-20-2006, 03:20 PM

guys Lua isn't an acronym!!

also people who write MOD as if that's an acronym are pretty silly but that's a debate for another time

o_ivaqual · 09-20-2006, 03:42 PM

well i guess you could backronym it in to Modification Of Data but yeah it's silly

what does lua mean then ? is it an abbreviation ?

o_kam · 09-20-2006, 03:50 PM

Lua means moon in Portuguese and is pronounced LOO-ah.

http://www.lua.org/about.html

o_crazy carl · 09-20-2006, 06:48 PM

Maybe they're just SHOUTING.

"Hey guys I am making a MOD with LUA!"

Circuitous · 09-20-2006, 07:33 PM

Quote:

Originally Posted by mirvin_monkey

guys Lua isn't an acronym!!

also people who write MOD as if that's an acronym are pretty silly but that's a debate for another time

It's not? Not even a backronym? Well I'll be damned.

o_imbrifer · 09-20-2006, 07:45 PM

Quote:

Originally Posted by Mulchman MM

Yeah, sorry for never responding to your second pm :P

Uh.. so... will I ever find out..?

Anyway, will we find out about any of these Lua questions?

o_nodnarb · 09-20-2006, 08:51 PM

the LOO-ah questions?

o_nezumi · 09-21-2006, 02:39 AM

Quote:

Originally Posted by mirvin_monkey

guys Lua isn't an acronym!!

I believe this stands as the one and only time so far a dev here has ever given us a concrete piece of information about LUA.

So I don't have much hope for this thread. They treat it like it's one of their trade secrets or something. I don't get it.

o_sh4x · 09-21-2006, 04:16 AM

In a bad mood Nezumi?

Defrag · 09-21-2006, 11:39 AM

We've discussed lua quite a bit, actually.

mirvin_monkey · 09-21-2006, 03:32 PM

Quote:

Originally Posted by Nezumi

So I don't have much hope for this thread. They treat it like it's one of their trade secrets or something. I don't get it.

Oh okay. Well we'll just give out feature lists and example scripts for a constantly evolving system then. I'm sure nobody will mind about how quickly these become hopelessly out of date and render useless any map that relied on them.

trepid_jesse · 09-21-2006, 07:13 PM

Say it in cockney, cause I still wanna hear that shit.

o_imbrifer · 09-21-2006, 08:41 PM

Quote:

Originally Posted by Defrag

We've discussed lua quite a bit, actually.

I recall quite a bit about Lua, and how it can be employed to do something along the lines of.. 'anything'.

So I'll assume that means I can attach player corpses to players who whack them with crowbars, or turn them into prop_physics and give players gravity guns to carry them back to the grinders.. its just a matter of how bad that ends up impacting the speediness of the server.

Quote:

Originally Posted by mirvin_monkey

Oh okay. Well we'll just give out feature lists and example scripts for a constantly evolving system then. I'm sure nobody will mind about how quickly these become hopelessly out of date and render useless any map that relied on them.

Okay okay, I think I get it now. Its so open and wide, youd have to try something out to see if it is possible - when Lua is released, yes?

Quote:

Originally Posted by trepid_jesse

Say it in cockney, cause I still wanna hear that shit.

Lua can do anything your shopping desires'

o_nezumi · 09-22-2006, 10:21 PM

Quote:

Originally Posted by mirvin_monkey

Oh okay. Well we'll just give out feature lists and example scripts for a constantly evolving system then.

Excellent, thank you. This will help us get a frame of reference, at least.

o_crazy carl · 09-27-2006, 04:16 PM

Listen, people, if you want to know about lua itself, just go to http://www.lua.org/ It's a general purpose scripting language that is designed to be embedded into C programs.

From the lua manual (http://www.lua.org/manual/5.1/manual.html#1):
"This host program (in this case, the FF .dll) can invoke functions to execute a piece of Lua code, can write and read Lua variables, and can register C functions to be called by Lua code. Through the use of C functions, Lua can be augmented to cope with a wide range of different domains, thus creating customized programming languages sharing a syntactical framework"

So when you hear that lua can do anything, what that really means is that lua can get information from the FF process, do any kind of logic you wish to write, and then talk back to FF.

What we don't know is how much the devs are going to link lua to the FF code. My understanding is that certain functions and variables in the FF code will be "lua enabled" enabling scripts to access them. Things like "which player has the flag" and "do damage to player x" are pretty obvious additions, but "make a client-side ragdoll" might not be available. I doubt you would be able to give a player a grav-gun, since there are no grav-guns in team fortress.

I'd certainly like to see a representative example of what can be done, even if it is a work in progress.

09-19-2006, 01:22 AM	#2
Circuitous Useless Retired FF Staff Join Date: Jun 2005 Class/Position: D Soldier, O Scout Gametype: AvD Posts Rated Helpful 9 Times	2 I'm certain can be done, the others I could only speculate. __________________ Look at all those dead links.

09-20-2006, 02:20 PM	#5
Mulchman MM Retired FF Staff Join Date: Dec 2004 Location: Lacey, WA Posts Rated Helpful 0 Times	Yeah, sorry for never responding to your second pm :P __________________ Head of the Orca Revolution (TM)

09-21-2006, 11:39 AM	#15
Defrag Retired FF Staff Join Date: Dec 2004 Location: Scotland Posts Rated Helpful 0 Times	We've discussed lua quite a bit, actually. __________________ Fortress Forever. Level Designer, Gameplay Dude and whatnot.

09-21-2006, 07:13 PM	#17
trepid_jesse Fortress Forever Staff Join Date: Jan 2005 Location: Texas Posts Rated Helpful 0 Times	Say it in cockney, cause I still wanna hear that shit. __________________ Support FF: Trepid, what?

09-18-2006, 11:24 PM	#1
o_imbrifer Join Date: May 2005 Location: Changes every few months Posts Rated Helpful 0 Times	LUA Questions Well, I have some questions about LUA for new game types and such, so I figured I'd make a thread so everyone could post questions about LUA, since im sure lots of mappers have them. 1. Is it possible to have a 'grav gun' for just one map? 2. Can you give flags properties like damage over time? 3. Is it possible to make corpses into prop_physics after the player dies? 4. Can you attach physics objects to different parts of players?

09-19-2006, 10:37 PM	#3
o_nezumi Join Date: Mar 2005 Location: The Peoples Republic of Harmfull Free Radicals Posts Rated Helpful 0 Times	Here's my question: 1. Please explain LUA. It's not so much a question I guess.

09-20-2006, 01:03 AM	#4
o_imbrifer Join Date: May 2005 Location: Changes every few months Posts Rated Helpful 0 Times	I knew the two of you would hop in this thread pretty quick. I guess a general question about LUA would be: 5. What can you not change? For example (with my corpses question): Can we change what is serverside clientside? Can we change physics or fundamental game mechanics? Could I make it so every player is followed around by a pink frog? Could I make one map an entire mod/total conversion of FF?

09-20-2006, 03:20 PM	#6
mirvin_monkey Fortress Forever Staff Join Date: Dec 2004 Location: Cape Town, SA Posts Rated Helpful 8 Times	guys Lua isn't an acronym!! also people who write MOD as if that's an acronym are pretty silly but that's a debate for another time

09-20-2006, 03:42 PM	#7
o_ivaqual Join Date: Feb 2005 Location: Europe, Front Yard Posts Rated Helpful 0 Times	well i guess you could backronym it in to Modification Of Data but yeah it's silly what does lua mean then ? is it an abbreviation ?

09-20-2006, 03:50 PM	#8
o_kam Join Date: Dec 2004 Location: Melbourne Posts Rated Helpful 0 Times	Lua means moon in Portuguese and is pronounced LOO-ah. http://www.lua.org/about.html

09-20-2006, 06:48 PM	#9
o_crazy carl Join Date: Jan 2005 Posts Rated Helpful 0 Times	Maybe they're just SHOUTING. "Hey guys I am making a MOD with LUA!"

09-20-2006, 08:51 PM	#12
o_nodnarb Join Date: Jul 2006 Location: Austin, Texas Posts Rated Helpful 0 Times	the LOO-ah questions?

09-21-2006, 04:16 AM	#14
o_sh4x Join Date: Jan 2005 Location: Montreal Posts Rated Helpful 0 Times	In a bad mood Nezumi?

09-27-2006, 04:16 PM	#20
o_crazy carl Join Date: Jan 2005 Posts Rated Helpful 0 Times	Listen, people, if you want to know about lua itself, just go to http://www.lua.org/ It's a general purpose scripting language that is designed to be embedded into C programs. From the lua manual (http://www.lua.org/manual/5.1/manual.html#1): "This host program (in this case, the FF .dll) can invoke functions to execute a piece of Lua code, can write and read Lua variables, and can register C functions to be called by Lua code. Through the use of C functions, Lua can be augmented to cope with a wide range of different domains, thus creating customized programming languages sharing a syntactical framework" So when you hear that lua can do anything, what that really means is that lua can get information from the FF process, do any kind of logic you wish to write, and then talk back to FF. What we don't know is how much the devs are going to link lua to the FF code. My understanding is that certain functions and variables in the FF code will be "lua enabled" enabling scripts to access them. Things like "which player has the flag" and "do damage to player x" are pretty obvious additions, but "make a client-side ragdoll" might not be available. I doubt you would be able to give a player a grav-gun, since there are no grav-guns in team fortress. I'd certainly like to see a representative example of what can be done, even if it is a work in progress.

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