Trigger ambush via linedef when returning to area?

[Nightcrawler552]

So say I set a linedef to trigger an ambush but only want it to trigger once I return to it at a later time, how would I do that? I assume it has something to do with "set line activation" but I'm not quite sure how to script it.

[Rorix]

You can use "setlinespecial" to do it. You can also use a variable to have the ambush activate after certain conditions are met:       

{

if (trap == 1)

           {

                    ambush

           }

}

 

it's even possible to do in vanilla doom using dummy sectors.

[Stabbey]

8 hours ago, Rorix said:

it's even possible to do in vanilla doom using dummy sectors.

 

Yeah, the method I use is a walk-repeatable line to lower the floor to 8 above the highest floor, tagged to the closet opening sectors, and those sectors are joined to control sectors which have the highest floor set to the ceiling, and those control sectors get lowered to the lowest floor (a different dummy sector) after a certain trigger is activated.

 

The result is a hallway you can walk up and down all you like and nothing happens, but once that trigger is hit and a control sector is lowered, the next time you pass the hallway trigger, it activates.