Calculations and Exp2 question

[jayg20769]

I've been having this fit on how to approach my new contraption and I need some help from you guy

Question 1: The function ":eye" in Exp2, is it possible to retrieve this information from a player while he/she is in a vehicle WITHOUT using a targetfinder? Simply put, is it possible for the Adv. Pod controller to output this info thru Exp2 or do I need to do some calculations?

Question 2: I know that subtracting 2 GPS coordinates would give you the FORWARD vector of whatever you are trying to track, but I can't seem to figure out how to calculate the left or right vector of a target, meaning:

Target is ahead of me,

I go right,

-or-

I go left,


and whenever it tries to get infront of me I just go to the left or right (vague question I know )

BTW the left or right thing, I choose which way to go, just cant figure out how to calculate it

[Donkie]

Answer 1: The advpodcontroller got outputs as X Y Z, those are the coordinates where the guy is looking inside the vehicle.

Answer 2: Try your way forward -.-, its 50% you will get right.

[jayg20769]

I wish it were that simple,

Problem 1: I dont want a posistion vector, I want a direction vector, thats what ":eye" does

Problem 2: there are 3 coordiates on a world plane, cutting it in half would just decrease its rate

[Fizyk]

1. Subtract your position from the adv. pod XYZ and normalize, you will get the direction vector.
2. You need more data to determine left and right, for example the up vector, which can be defined as (0,0,1). Then calculate cross product (direction x up) and you will get the right vector.

[jayg20769]

Thx so much for 1. but could you please describe the up vector and methods to getting it? thanks again

[jayg20769]

I tried 1. but Z doesn't respond when I look up (its always 0), only when I look down, does it's value change, and I still can't figure out that up vector

[Magos Mechanicus]

Wirelink the expression to the pod controller. That lets you use Pod:entity():driver() and Pod:entity()assenger(), one of which will be the appropriate entity to use eye() on depending on what kind of vehicle you're using.
You can also get the pod's right vector directly with Pod:entity():right(), but it will not turn with the mouse, only the pod. If you want that you'd have to use the cross product of eye() with Pod:entity():up().

[jayg20769]

Never mind, I figured out how to get the right vector, I just took the :eye and rotated it 90 degrees with

Direction:rotate(0,90,0)

Got me EXACTLY what I wanted, but thank you guys for the support and thanks so much Magos for telling me how to get eye from the pod

[jayg20769]

I tried both Pod:entity():driver():eye() and Pod:entity():Passenger():eye()

but both of them aren't returning any values

And I properly wirelinked them

Im using the blue metal seat

[jayg20769]

Sry for bump, I really want to figure this out

maybe I need an entity marker? (hope not)