Speedometer XYZ - Local or World?

[mjmr89]

Just wondering if the option for XYZ values on the speedo are local or world values. It seems to me they are world - if so, is there any way to get local xyz speed values? I'm hoping to fix some drift using a local speedo or something that does the same kind of thing (I've tried VTs to stop drifting, but they always spiral to a stop which pisses me off).

Thanks!

[Fizyk]

They are probably world values. To get local values from the world values you just have to project the velocity vectors on the up, right and forward vectors, in EGate 2 that would be:

Vel = vec(WorldX,WorldY,WorldZ)
LocalX = -Vel:dot(entity():forward())
LocalY = Vel:dot(entity():right())
LocalZ = Vel:dot(entity():up())

I have no idea why X is to the back and Y to the right, but that's how I had to calculate it to make it work in my flying system.

[mjmr89]

I'll give that a try - what is it relative to? Like is the top of the chip pos X or neg x or what?

Well I just gave that a try - it seems to work sometimes, but not others. Seems if it has a large speed in both x and y directions, it spins and sort of spirals toa stop like the vector thrusters.

EDIT: Turns out it doesn't like it when I push it in a direction and it isn't lined up with the world xyz coords.

[Fizyk]

It looks like the top of the chip is negative X.

[Syranide]

They are probably world values. To get local values from the world values you just have to project the velocity vectors on the up, right and forward vectors, in EGate 2 that would be:

Vel = vec(WorldX,WorldY,WorldZ)
LocalX = -Vel:dot(entity():forward())
LocalY = Vel:dot(entity():right())
LocalZ = Vel:dot(entity():up())

I have no idea why X is to the back and Y to the right, but that's how I had to calculate it to make it work in my flying system.

You can actually just do entity():toLocal(vec(WorldX,WorldY,WorldZ)) instead (or toWorld())

[mjmr89]

Eh... I was just perusing the egate2 documentation and found this -
E:velL() V -gets the local velocity of the entity

So something like:
entity():velL():x() ?

[Syranide]

Eh... I was just perusing the egate2 documentation and found this -
E:velL() V -gets the local velocity of the entity

So something like:
entity():velL():x() ?

Yep

[mjmr89]

Yep, it does work pretty well... Except sometimes I STILL get some yaw movement - why? I'm using smartsnap and stuff so they should be 100% aligned with each other...