Lua code snippets in etwng repository

**taw** · January 26, 2011, 05:00 PM

I put snippets of commonly used lua code to etwng repository. You can grab them here.
Copy-pasting them will speed up scripting.lua customization somewhat.

**jtravers88** · March 02, 2011, 10:28 AM

Is there a resource for scripting basics for ETW?

I've noticed now a few examples of lua usage, in the scripting.lua and also loading other lua files.

But I'm puzzled as to how and where these programmers / modders found references to game functions.

For instance, you use 'force_diplomacy' in your snippet. Is this from seeing it in an existing scripting.lua, or do you have some reference for game functions?

Thanks.

**taw** · March 02, 2011, 10:41 AM

Originally Posted by jtravers88

Is there a resource for scripting basics for ETW?

I've noticed now a few examples of lua usage, in the scripting.lua and also loading other lua files.

But I'm puzzled as to how and where these programmers / modders found references to game functions.

For instance, you use 'force_diplomacy' in your snippet. Is this from seeing it in an existing scripting.lua, or do you have some reference for game functions?

Thanks.

There's no official reference.

There are a few tutorial and references threads in forums.

There are also examples of .lua in ETW and in various mods (especially APE:TI).

There is also .lua which came from decompiling .luac files.

And lua has debug features that allow listing of all commands - the only thing left then is figuring out what they mean (and how to make sure they don't crash).

Anything in particular you'd like to see?

**T.C.** · March 02, 2011, 01:24 PM

Originally Posted by jtravers88

Is there a resource for scripting basics for ETW?

I've noticed now a few examples of lua usage, in the scripting.lua and also loading other lua files.

But I'm puzzled as to how and where these programmers / modders found references to game functions.

For instance, you use 'force_diplomacy' in your snippet. Is this from seeing it in an existing scripting.lua, or do you have some reference for game functions?

Thanks.

Look at my sig. There's a link for the NTW script-o-rama, but there is little there that isn't in ETW, as well as a bit of an introduction to Lua. There's also other links to Lua related stuff in my links, including a list just like taw mentioned in his post

**Vyacheslav** · March 28, 2011, 10:44 AM

Hello!
Excuse me if I am not on the topic. I do not know whom to address. (I know English badly I asked my friends to write the message).

The questions are
1. Have anybody decompiled the files luac games ETW? Ie luac ->lua.
I am especially interested in the files technology.luac and so on. If somebody have done them, download them on the site, please or inform me about the files.
2. There are good lua files in mod APE_TI. How to make them work in Vanilla ETW without mod APE_TI?
Thanks a lot.

**taw** · March 28, 2011, 10:50 AM

Originally Posted by Vyacheslav

Hello!
Excuse me if I am not on the topic. I do not know whom to address. (I know English badly I asked my friends to write the message).

The questions are
1. Have anybody decompiled the files luac games ETW? Ie I am especially interested in the files technology.luac and so on. If somebody have done them, download them on the site, please or inform me about the files.

Yes, decompiler can be build using scripts from etwng repository.
I don't know if anyone managed to build decompiler on Windows, it works on Linux and OSX fine.

Here's technology.lua from ETW:

Code:

-- Decompiled using luadec 2.0 UNICODE by sztupy (http://winmo.sztupy.hu)
-- Command line was: samples_etw/campaign ui/technology_scripts/technology.luac 

local utils = require("Utilities")
local core = (require("CoreUtils"))
local CampaignUI, Localisation = nil, nil
local root = UIComponent(Component.Root())
local stealing = core.NamespaceFile("technology_stealing")
local researching = (core.NamespaceFile("technology_researching"))
local techmode = nil
ZoomToEntity = function()
  techmode.ZoomToEntity()
end

ResearchingMode = function()
  return techmode == researching
end

Refresh = function(l_3_0, l_3_1)
  out.shane("* technology.lua - Refresh: residence = " .. tostring(l_3_0) .. ", character = " .. tostring(l_3_1))
  if techmode == stealing then
    local details = CampaignUI.TechnologyStealingDetails(l_3_1, l_3_0)
    if details ~= nil then
      Initialise(details, CampaignUI, Localisation, true)
    else
      panel_manager.ClosePanel("technology")
    end
  else
    local details = CampaignUI.TechnologyResearchingDetails(l_3_1, l_3_0)
    if details ~= nil then
      Initialise(details, CampaignUI, Localisation, false)
    else
      panel_manager.ClosePanel("technology")
    end
  end
end

Reinitialise = function(l_4_0, l_4_1)                                                                                                                       
  out.shane("* Reinitialising technology *")                                                                                                                
  Initialise(l_4_0, CampaignUI, Localisation, l_4_1)                                                                                                        
end                                                                                                                                                         
                                                                                                                                                            
Initialise = function(l_5_0, l_5_1, l_5_2, l_5_3)                                                                                                           
  out.shane("* Initialising technology *")                                                                                                                  
  CampaignUI = l_5_1                                                                                                                                        
  upvalue_512 = l_5_2                                                                                                                                       
  if l_5_3 == true then                                                                                                                                     
    upvalue_1024 = stealing                                                                                                                                 
  else                                                                                                                                                      
    upvalue_1024 = researching                                                                                                                              
  end                                                                                                                                                       
  techmode.Initialise(l_5_0, Address, Component.Root(), CampaignUI, Localisation)                                                                           
end                                                                                                                                                         
                                                                                                                                                            
OnEntityLClickUp = function(l_6_0)                                                                                                                          
  techmode.SelectEntity(l_6_0)                                                                                                                              
end                                                                                                                                                         
                                                                                                                                                            
OnEntityRClickUp = function(l_7_0)                                                                                                                          
  techmode.ShowEntityDetails(l_7_0)                                                                                                                         
end                                                                                                                                                         
                                                                                                                                                            
TechLeftClicked = function(l_8_0)                                                                                                                           
  techmode.TechLeftClicked(l_8_0)                                                                                                                           
end                                                                                                                                                         
                                                                                                                                                            
TechRightClicked = function(l_9_0)                                                                                                                          
  techmode.TechRightClicked(l_9_0)                                                                                                                          
end                                                                                                                                                         
                                                                                                                                                            
TurnsToResearchOrChanceToSteal = function(l_10_0)                                                                                                           
  return techmode.TurnsToResearchOrChanceToSteal(l_10_0)                                                                                                    
end                                                                                                                                                         
                                                                                                                                                            
SelectedEntityProgessingTech = function(l_11_0)                                                                                                             
  return techmode.SelectedEntityProgessingTech(Key)                                                                                                         
end                                                                                                                                                         
                                                                                                                                                            
HasFacilities = function()                                                                                                                                  
  return techmode.HasFacilities()                                                                                                                           
end                                                                                                                                                         
                                                                                                                                                            
CreateTechEntry = function(l_13_0, l_13_1, l_13_2)                                                                                                          
  return Component.CreateComponentFromTemplate("tech_entry", l_13_0, l_13_1, 0, 0, l_13_2)                                                                  
end                                                                                                                                                         
                                                                                                                                                            
SelectTab = function(l_14_0)                                                                                                                                
  out.shane("SelectTab called with " .. tostring(l_14_0))                                                                                                   
  techmode.SelectTab(l_14_0)                                                                                                                                
end                                                                                                                                                         
                                                                                                                                                            
TechAvailable = function(l_15_0)                                                                                                                            
  return techmode.TechAvailable(l_15_0)                                                                                                                     
end                                                                                                                                                         
                                                                                                                                                            
TechCompleted = function(l_16_0)
  return techmode.TechCompleted(l_16_0)
end

TechInProgress = function(l_17_0)
  return techmode.TechInProgress(l_17_0)
end

If you have troubles setting up decompiler yourself,
PM me your email address and I'll send you an archive of all decoded lua files.

Originally Posted by Vyacheslav

2. There are good lua files in mod APE_TI. How to make them work in Vanilla ETW without mod APE_TI?
Thanks a lot.

It's a lot of effort, and you need a fairly good understanding of lua if you hope to succeed.

**T.C.** · March 28, 2011, 10:57 AM

Originally Posted by taw

Yes, decompiler can be build using scripts from etwng repository.
I don't know if anyone managed to build decompiler on Windows, it works on Linux and OSX fine.

Here's technology.lua from ETW:

Code:

-- Decompiled using luadec 2.0 UNICODE by sztupy (http://winmo.sztupy.hu)
-- Command line was: samples_etw/campaign ui/technology_scripts/technology.luac 

local utils = require("Utilities")
local core = (require("CoreUtils"))
local CampaignUI, Localisation = nil, nil
local root = UIComponent(Component.Root())
local stealing = core.NamespaceFile("technology_stealing")
local researching = (core.NamespaceFile("technology_researching"))
local techmode = nil
ZoomToEntity = function()
  techmode.ZoomToEntity()
end

ResearchingMode = function()
  return techmode == researching
end

Refresh = function(l_3_0, l_3_1)
  out.shane("* technology.lua - Refresh: residence = " .. tostring(l_3_0) .. ", character = " .. tostring(l_3_1))
  if techmode == stealing then
    local details = CampaignUI.TechnologyStealingDetails(l_3_1, l_3_0)
    if details ~= nil then
      Initialise(details, CampaignUI, Localisation, true)
    else
      panel_manager.ClosePanel("technology")
    end
  else
    local details = CampaignUI.TechnologyResearchingDetails(l_3_1, l_3_0)
    if details ~= nil then
      Initialise(details, CampaignUI, Localisation, false)
    else
      panel_manager.ClosePanel("technology")
    end
  end
end

Reinitialise = function(l_4_0, l_4_1)                                                                                                                       
  out.shane("* Reinitialising technology *")                                                                                                                
  Initialise(l_4_0, CampaignUI, Localisation, l_4_1)                                                                                                        
end                                                                                                                                                         
                                                                                                                                                            
Initialise = function(l_5_0, l_5_1, l_5_2, l_5_3)                                                                                                           
  out.shane("* Initialising technology *")                                                                                                                  
  CampaignUI = l_5_1                                                                                                                                        
  upvalue_512 = l_5_2                                                                                                                                       
  if l_5_3 == true then                                                                                                                                     
    upvalue_1024 = stealing                                                                                                                                 
  else                                                                                                                                                      
    upvalue_1024 = researching                                                                                                                              
  end                                                                                                                                                       
  techmode.Initialise(l_5_0, Address, Component.Root(), CampaignUI, Localisation)                                                                           
end                                                                                                                                                         
                                                                                                                                                            
OnEntityLClickUp = function(l_6_0)                                                                                                                          
  techmode.SelectEntity(l_6_0)                                                                                                                              
end                                                                                                                                                         
                                                                                                                                                            
OnEntityRClickUp = function(l_7_0)                                                                                                                          
  techmode.ShowEntityDetails(l_7_0)                                                                                                                         
end                                                                                                                                                         
                                                                                                                                                            
TechLeftClicked = function(l_8_0)                                                                                                                           
  techmode.TechLeftClicked(l_8_0)                                                                                                                           
end                                                                                                                                                         
                                                                                                                                                            
TechRightClicked = function(l_9_0)                                                                                                                          
  techmode.TechRightClicked(l_9_0)                                                                                                                          
end                                                                                                                                                         
                                                                                                                                                            
TurnsToResearchOrChanceToSteal = function(l_10_0)                                                                                                           
  return techmode.TurnsToResearchOrChanceToSteal(l_10_0)                                                                                                    
end                                                                                                                                                         
                                                                                                                                                            
SelectedEntityProgessingTech = function(l_11_0)                                                                                                             
  return techmode.SelectedEntityProgessingTech(Key)                                                                                                         
end                                                                                                                                                         
                                                                                                                                                            
HasFacilities = function()                                                                                                                                  
  return techmode.HasFacilities()                                                                                                                           
end                                                                                                                                                         
                                                                                                                                                            
CreateTechEntry = function(l_13_0, l_13_1, l_13_2)                                                                                                          
  return Component.CreateComponentFromTemplate("tech_entry", l_13_0, l_13_1, 0, 0, l_13_2)                                                                  
end                                                                                                                                                         
                                                                                                                                                            
SelectTab = function(l_14_0)                                                                                                                                
  out.shane("SelectTab called with " .. tostring(l_14_0))                                                                                                   
  techmode.SelectTab(l_14_0)                                                                                                                                
end                                                                                                                                                         
                                                                                                                                                            
TechAvailable = function(l_15_0)                                                                                                                            
  return techmode.TechAvailable(l_15_0)                                                                                                                     
end                                                                                                                                                         
                                                                                                                                                            
TechCompleted = function(l_16_0)
  return techmode.TechCompleted(l_16_0)
end

TechInProgress = function(l_17_0)
  return techmode.TechInProgress(l_17_0)
end

If you have troubles setting up decompiler yourself,
PM me your email address and I'll send you an archive of all decoded lua files.

It's a lot of effort, and you need a fairly good understanding of lua if you hope to succeed.

That one won't work, I can see at a glance it's replaced local variables with upvalues. There's only two, so it should be easy to fix.