How to make an Object react if a key is hit within a trigger?

Question

Hey, I'm making a game where I need a gameobject to react when E (Or any button) is pressed within the area of a trigger collider. I don't know if there is any specific command far "While inside trigger", and if there is one, I have yet to find it. I'd appreciate anyone's help, thank you.

Answer 1

Answer by sparkzbarca · Apr 03, 2015 at 12:32 AM

use a bool to know when someone is in a trigger.

for example.

 void OnTriggerEnter (collider object)
 {
 if (object.tag == "player")
 DoReact = true;
 }
 
 void OnTriggerExit (collider object)
 {
 if (object.tag == "player")
 DoReact = false;
 }
 
 if (input.keycode('e') && DoReact)
 {
 ...do something
 }

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Octurn · Apr 03, 2015 at 01:41 AM 0

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when i put this in, object is an error, as an unexpected declaration in struct and etc, the == are also errors, and and the () around collider object

AlwaysSunny · Apr 03, 2015 at 03:56 AM 0

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I believe @sparkzbarca made the assumption that you would have sufficient experience to recognize some shorthand and pseudocode. Please consider conducting ample research to familiarize yourself with Unity and C# prior to asking for help.

Usually, you'll want to know WHAT object is within the trigger and respond to input only if the object is of the correct type:

 bool is$$anonymous$$eyDown;
 
 void Update() {
   is$$anonymous$$eyDown = Input.Get$$anonymous$$ey( $$anonymous$$eyCode.E );
 }
 
 void OnTriggerStay( Collider other ) {
   // here, you'd check some property of the "other" object
   if ( otherObjectIsTheRightObject && is$$anonymous$$eyDown ) {
     // do whatever
   }
 }

Octurn · Apr 03, 2015 at 01:41 PM 0

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I wish i had seen this sooner, I did end up solving the issue though, so many thanks to the both of you.

How to make an Object react if a key is hit within a trigger?

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