Issues NPC Grenade avoidance

Questions & Answers
1

Hello this is my first time here,
I have an issues about NPC especially for Grenade Avoidance.
Let take example:
NPC see grenade near them → They avoid it by going out of range–> The Script work!
but when about to shout because awareness of “Grenade!!”. It’s not working as expected. Here example:

Function GrenadeRun(){		
     while (true) {
			
         if ( GrenadeDistance < AwareGrenadeRange ) {							
	   //Shout grenade "GRENADE!" script
	    }	

         if ( GrenadeDistance < RunGrenadeRange ) {							
	    //Run from grenade
	    }
	yield;	
	}
}

The script result:
NPC run away from grenade but shout the “grenade!” frame-by-frame. Undesired result.
So i try this way:

Function GrenadeRun(){		
     while (true) {
			
         if ( GrenadeDistance < AwareGrenadeRange ) {							
	   //Shout grenade "GRENADE!" script
            yield WaitForSeconds(1);
	    }	

         if ( GrenadeDistance < RunGrenadeRange ) {							
	    //Run from grenade
	    }
	yield;	
	}
}

The script result: The NPC shout “grenade!” is ok now but need to wait 1 second before start run away from grenade. Undesired result.
Another attempt:

 Function GrenadeRun(){		
   	    while (true) {
    			
             if ( GrenadeDistance < AwareGrenadeRange ) {							
    	   //Shout grenade "GRENADE!" script
                yield WaitForSeconds(1);
    	    }
        }	
         while (true) {
             if ( GrenadeDistance < RunGrenadeRange ) {							
    	    //Run from grenade
    	    }
    	yield;	
    	}
    }

The script result: The NPC only shout “GRENADE!” only. Not running from grenade
What i want is the NPC shout “Grenade!” per second and start to run simultaneously.
but i still cant figure it out. Thank you

3

The problem here is that you are calling shout inside the loop.

You can use a variable which hold the last time you shouted. Here is my pseudocode

if (lastTimeShouted < Time.Now - 1sec)
{
    shoutAgain();
    lastTimeShouted = Time.Now
}
2

i have tried it… its still not working. It’s still produce “Grenade!” frame-by-frame. To be honest, i still want to retain the use of “while(true}” in the code:
here my code:

function GrenadeRun () {
var curWayPoint = AutoWayPoint.FindClosest(transform.position);

	var lastVisibleGrenadePosition = GrenadeTar.transform.position;
if (CanSeeGrenade ()){
	while (true) {


			var waypointPosition = curWayPoint.transform.position;
	
			if (Vector3.Distance(waypointPosition, transform.position) < pickNextWaypointDistance)
				curWayPoint = PickNextWaypoint (curWayPoint);
   			
			var distance = Vector3.Distance(transform.position, GrenadeTar.transform.position);
			
			
			if ( distance < AwareGrenadeRange ) {						
				GrenadaWarning();
				}
			
			if ( distance < AwareGrenadeRange) {
				MoveTowardsRun(waypointPosition);
				} else {
				BackToPatrol ();
				return;
				}	
				
			if (CanSeeTarget () && !CanSeeGrenade()) {
				yield StartCoroutine("AttackPlayer");
				return; 
				}
								
																																														
		yield;			
		}
	}	
}

And the targeted function of GrenadaWarning();

function GrenadaWarning () {

var distance = Vector3.Distance(transform.position, GrenadeTar.transform.position);

while (distance < AwareGrenadeRange) {
BroadcastMessage("GrenWarnStarter");
	yield WaitForSeconds(1.5);
	}
}

Still make the NPC shout continuously frame-by-frame

4

Azran answer solved my issues :smiley:
Thank you Azran. Next time i will try to learn more about unity script especially Invoke timing too.

here the working script:

declare at header (JavaScript):

private var lastTimeShouted = 0.0;

The Shout one:

function GrenadaWarning () {

if (lastTimeShouted < Time.time - 1)	
BroadcastMessage("GrenWarnStarter");
	lastTimeShouted = Time.time;

}

i feel very shame… its just a few line too but work as my expecting