SeePlayer() event not triggering in singleplayer mode..?

Legacy UDK Programming and UnrealScript
1

I’m finding that my enemy AI controllers are not triggering the SeePlayer() event in single player mode. However it works fine in MP.

Does anyone know why this might be?

I can’t see the implementation of what calls SeePlayer(). I’m guessing it’s in the native C++.

2

If you use (outside of any state)


event SeePlayer (Pawn Seen)
{
	super.SeePlayer(Seen);
        `log(Seen);
}

Does it not log the player? SeePlayer in an AIController works right out of the box for me.

EDIT: Almost works out of the box for me… I recall the default implementation of GetPlayerViewPoint put the ai eyepoint in the ground. Here’s mine if it helps you:


simulated event GetPlayerViewPoint(out vector out_Location, out Rotator out_Rotation)
{	
        local vector Location_New;
	Location_New=Pawn.Location;
	Location_New.z=Pawn.Location.z+Pawn.EyeHeight;
	
	out_Location = Location_New;
	out_Rotation = Rotation;
}

But once I had the AI’s viewpoint set up correctly, I simply used seeplayer without any modifications and it works fine.

3

Thanks @Crollo. I’ll give that a try when I get back to my work station. It seems strange that it works fine during multiplayer though…

4

Hey scooter, just checking in to see if you solved it or if you’re still having troubles with it.

5

@Crollo. Thanks for checking back. I just tried adding SeePlayer outside of any state and logging, and it never gets triggered.

I also tried your suggestion with GetPlayerViewPoint() but still nothing. I’ve tested that my player controller has bIsPlayer=true and it does.

One thing that is a little confusing is that the signature of SeePlayer in Controller.uc, it states that it is called if bIsPlayer is set to true on ‘Seen’, where ‘Seen’ is a pawn. However bIsPlayer is a param of the Controller class, not the Pawn class. I’m guessing this simply an error, or a change was made through the course of UDK releases.



/* epic ===============================================
* ::SeePlayer
*
* Called whenever Seen is within of our line of sight
* if Seen.bIsPlayer==true.
*
* =====================================================
*/
event SeePlayer( Pawn Seen );

I’m pretty stumped by why SeePlayer is not firing for me in SP, when it’s working perfectly in multiplayer. Does anyone have any other ideas of why?

6

Since it is native code we can’t see exactly what it’s checking, it may be a typo and it’s checking the IsPlayerPawn function on the pawn instead of bisplayer, or it could be casting from the pawn to it’s controller.

The only other thing I can think of off the top of my head is perhaps me using UDKbot instead of aicontroller might affect things.
Could you post your player pawn and controller?

EDIT: You can also verify the eyepoint is correct by adding the following to your tick event:



        local vector ViewLocation;
	local rotator ViewRot;
	GetPlayerViewPoint(ViewLocation,ViewRot);
	DrawDebugLine( ViewLocation, ViewLocation+200*normal(vector(viewrot)), 0, 255, 0, false);

I made a mistake in the GetPlayerViewPoint, instead of Pawn.Rotation it should just be Rotation. This only affects the pitch of the rotation, however so it shouldn’t damage seeplayer.