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Sidewinder294 wrote: Thu Jan 12, 2023 9:39 pm So I'm trying to set a mission failure message to appear using the events system to fire only if two events are true, however currently the event triggers if either happens.

Is there any way to introduce Boolean style checks using the events editor (in this case an AND condition) or do I need to use Lua for that?

Thanks.

KnightHawk75 wrote: Fri Jan 13, 2023 2:40 pm
I'd just use a condition and simple lua statement (or well simple depends what conditions you are checking but...)

if condition1==true and condition2==true then
return true;
else
return false;
end

Question is are the two "events" actual prior or events, or are you using 'events' to describe conditions in your question, ie like if unit 1 is destroyed and unit 2 is damaged at least 50% sort of thing, vs did 2 other events in the event system already execute.

Sidewinder294 wrote: Fri Jan 13, 2023 10:21 pm So at the moment I have three events set up to cover the outcome in question - one event for each unit being destroyed, which deducts 100 points (but shouldn't end the mission independently as I want the failure to trigger only if both units are lost) and then a third event that currently has the two UnitDestroyed triggers (also used by the separate unit lost events), a message action and an EndScenario action. Is it just a case of putting a LuaScript condition in the conditions editor for the mission end event?

Sorry - total Lua newbie here.

---paste into a condition--
--define little helper function
--all it does is find if a unit exists and returns true if it does.
local function UnitExists(unitsguid)
  local retval,u = pcall(ScenEdit_GetUnit, {guid=unitsguid}); --tries to get the unit.
  if (retval ==true) and u ~= nil then   --if it fails to get the unit, then unit does not exist.
    return true;  --function returns true
  else 
    return false;  --function returns false
  end
end

if UnitExists('PutUnit1GuidHere') == false and UnitExists('PutUnit2GuidHere') == false then
  return true; -- condition returns true, lets the message get displayed.
else 
 return false; --condition returns false, no message is displayed.
end

KnightHawk75 wrote: Sat Jan 14, 2023 7:08 am
No problem.
So if I understand right you want to test in a 3rd event using both the other 2 unit destroyed triggers that tests for if the two units are both destroyed before letting the message event happen.

Code: Select all

---paste into a condition--
--define little helper function
--all it does is find if a unit exists and returns true if it does.
local function UnitExists(unitsguid)
  local retval,u = pcall(ScenEdit_GetUnit, {guid=unitsguid}); --tries to get the unit.
  if (retval ==true) and u ~= nil then   --if it fails to get the unit, then unit does not exist.
    return true;  --function returns true
  else 
    return false;  --function returns false
  end
end

if UnitExists('PutUnit1GuidHere') == false and UnitExists('PutUnit2GuidHere') == false then
  return true; -- condition returns true, lets the message get displayed.
else 
 return false; --condition returns false, no message is displayed.
end

Attached very simple scene in (1147.52 db3k 497a) that shows it in action for what I think you are describing. Play red, destroy two contacts, upon both being destroyed action message is displayed (on both sides). I believe I set this up similar to what you are describing, if not let me know, I'm can be a bit dense.

---paste into a condition--
--define little helper function
--all it does is find if a unit exists and returns true if it does.
local function UnitExists(unitsguid)
  local retval,u = pcall(ScenEdit_GetUnit, {guid=unitsguid}); --tries to get the unit.
  if (retval ==true) and u ~= nil then   --if it fails to get the unit, then unit does not exist.
    return true;  --function returns true
  else 
    return false;  --function returns false
  end
end

if UnitExists('O63NGK-0HMNJOLQJS2U7') == false and UnitExists('O63NGK-0HMNJOLQJSF6L') == false then
  return true; -- condition returns true, lets the message get displayed.
else 
 return false; --condition returns false, no message is displayed.
end