Checking if a gate is Open/Closed

[the Lumpy]

What's the best way to check if a gate is open or closed? The only way I can think of now is using variables to keep track of when I open and close it, but that would be difficult because of the large number of gates on my map. Any suggestions are appriciated.

 

[mase]

The best way to to set a boolean var to true when ever it is opened and then set the boolean var to false if its closed.

 

[xPheRe]

Check if the doodad is dead.
When a gate is opened or destroyed, it's life is zero.
The main difference between one and another is the animation shown.
So when the gate is destroyed, the animation is "death"
But when it's opened, the animation is "death alternate"