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Cortex Command Lua Scripting Tutorial
http://forums.datarealms.com/viewtopic.php?f=73&t=17955
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Author:  Major [ Sun Aug 29, 2010 8:03 am ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

Quote:
Code:
local varA = 5
local varB = varA


This would make variable "varB" equal to 5. Note how the word "local" was not used when recalling the variable "varA".


It does use "local" when recalling variable "VarA".

Quote:
-- Statement checking if the distance check (variable "local distcheck") is less than 10. If so, then do the action...
if distcheck < 30 then


Two different values.

Author:  TheLastBanana [ Sun Aug 29, 2010 8:48 am ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

Major, I'm pretty sure what he meant by the first one is that it shouldn't be written out as this:
Code:
local varB = local varA

Author:  CaveCricket48 [ Sun Aug 29, 2010 5:29 pm ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

Major wrote:
Quote:
-- Statement checking if the distance check (variable "local distcheck") is less than 10. If so, then do the action...
if distcheck < 30 then


Two different values.

Yeah fixed.


Also, I added another example, which is for a missile. Check it out!

Author:  Major [ Mon Aug 30, 2010 8:02 am ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

Quote:
Major, I'm pretty sure what he meant by the first one is that it shouldn't be written out as this:
Code:
local varB = local varA


Ahh, thanks. :)

Could you add the documentation for functions and properties here, because the wiki is down, please?

Author:  CrazyMLC [ Mon Aug 30, 2010 3:10 pm ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

Make sure to read every sticky.
viewtopic.php?p=364463#p364463

Author:  Shook [ Fri Dec 03, 2010 2:59 pm ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

Quick question regarding tables; is there any easy way of checking whether something is in a given table? Or do i just have to "brute force" check? (as in, do a secondary for loop that checks every single entry for the variable i'm looking for)
It would be supremely useful for making a decent railgun.

Author:  Abdul Alhazred [ Fri Dec 03, 2010 3:24 pm ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

Shook wrote:
Quick question regarding tables; is there any easy way of checking whether something is in a given table?
Pretty much anything can be an index in Lua, so you can use a separate table to store and look up the index of the first table.

Code:
function Create(self)
   gAct = {}
   gLookup = {}
   gAct[1] = self
   gLookup[self] = 1
end

function Update(self)
   print(gAct[gLookup[self]])
end

If "self" is not a member of "gAct" the call "gLookup[self]" will return "nil".

Author:  adwuga [ Mon Apr 25, 2011 9:07 am ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

how would I make a statement saying "if any enemy soldier is alive then..." ?

Author:  Abdul Alhazred [ Mon Apr 25, 2011 12:27 pm ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

adwuga wrote:
how would I make a statement saying "if any enemy soldier is alive then..." ?

Assuming the player is team one:
Code:
for Act in MovableMan.Actors do
   if Act.Team ~= Activity.TEAM_1 then
      -- there are enemies in the scene
      -- do stuff here
      break   -- stop looping
   end
end

Author:  adwuga [ Mon Apr 25, 2011 9:03 pm ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

thanks Abdul Alhazred.
another thing(sorry)
this is in my mission code. i want the player to kill all enemies and then kill the brain.
for some reason it wont work. can someone tell me whats wrong?
Code:
-----------------------------------------------------------------------------------------
-- Update Activity
-----------------------------------------------------------------------------------------
function Battle:UpdateActivity()
      -- Clear all objective markers, they get re-added each frame
    self:ClearObjectivePoints();

   self:Killcheck();
   self:DestroyBrain();
   -- Check for defeat conditions
   self:DoBrainSelection();
   
   self:YSortObjectivePoints();
end
-----------------------------------------------------------------------------------------
-- Kill Everyone check
-----------------------------------------------------------------------------------------
function Battle:Killcheck()
   if self.Killcomplete == false then
      print ("Kill Humans");
   else
      print ("Complete");
end
-----------------------------------------------------------------------------------------
-- Kill Everyone
-----------------------------------------------------------------------------------------
function Battle:KillHumans()
   for Act in MovableMan.Actors do
      if Act.Team ~= Activity.TEAM_1 then
         self.Killcomplete = false;
      else
         self.Killcomplete = true;
         break   -- stop looping
      end
   end
end
-----------------------------------------------------------------------------------------
-- Destroy Brain
-----------------------------------------------------------------------------------------
function Battle:DestroyBrain()
   if self.Killcomplete == true then
      if MovableMan:IsActor(self.CPUBrain) then
                  self:AddObjectivePoint("Destroy!", self.CPUBrain.AboveHUDPos, Activity.TEAM_1, GameActivity.ARROWDOWN);
      else
          self.WinnerTeam = Activity.TEAM_1;
          ActivityMan:EndActivity();
      end
   end
end

Author:  Roast Veg [ Mon Apr 25, 2011 9:10 pm ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

Your KillHumans function is not being initiated in the Update function.

Author:  adwuga [ Mon Apr 25, 2011 11:09 pm ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

there was something else wrong with it, since it still doesnt work. that prabably did help though so thanks. any other ideas as to what is wrong?

Author:  Roast Veg [ Mon Apr 25, 2011 11:30 pm ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

You don't have a DoBrainSelection function.

Author:  adwuga [ Tue Apr 26, 2011 3:16 am ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

that is further down, I didnt want to put my entire script in the post. what doesnt work is the mission objectives. the self:Killcheck(); and self:KillHumans(); dont work, and so self:DestroyBrain(); is never activated, and the mission cant be won. I could take out the kill functions, but I want the objective to be to kill every one, then kill the brain.

Author:  Abdul Alhazred [ Tue Apr 26, 2011 6:08 am ]
Post subject:  Re: Cortex Command Lua Scripting Tutorial

Have you looked in the console for errors? KillChek is missing and end, and KillHumans will set self.Killcomplete to true if there are any actors on team one in the scene. Try doing it like this instead:
Code:
function Battle:KillHumans()
   self.Killcomplete = true
   for Act in MovableMan.Actors do
      if Act.Team ~= Activity.TEAM_1 then
         self.Killcomplete = false
         break   -- stop looping
      end
   end
end

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