OnTriggerEnter strange bug

Questions & Answers
1

Hi…
I have a door with an animation. This animation starts automatically with the OnTriggerEnter.
There’s a car with an animation (I have done 4 prefab of this, So there are 4 same car) when the first car starts the door should open, instead It dosn’t, when the second car starts, the door opens! When i make start the third car, the door doesn’t open again, and with the fourth car the door works again…
ps: the door’s box collider is on “trigger”.
This is really strange! someone can tell me why? Thank you in advance!
Here’s the script of the door:

#pragma strict

var Animazione = "PortaAutomatica";
var on : boolean;
var Audio1 : AudioClip; 



function OnTriggerEnter (other : Collider) {
    
on = !on;

if (!on){
GetComponent.<Animation>()[Animazione].speed = 0.2; 
GetComponent.<Animation>().Play(Animazione);
GetComponent.<AudioSource>().clip = Audio1;
GetComponent.<AudioSource>().Play();


}

if (on) {

}
    
}
2

with each car you toggle the on bool. first time it’s true, second time it’s false, third time true, 4th time false. Remove the wrapper with the on Boolean.

3

you initialize “on” as false, whenyou call: on = !on , you make it true, and since the code checks if it is false, the door will not open on the first car.
you can solve this by removing on = !on (or place it below the if statements)
or by changing if (!on){} to if(on)()