### Author Topic:  vrel vs prel  (Read 296 times)

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##### vrel vs prel
« on: December 03, 2016, 08:43:04 AM »
what is the difference between vrel and prel? are there any other variants?

#### Dryym

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##### Re: vrel vs prel
« Reply #1 on: December 03, 2016, 09:38:14 AM »
I feel like this is handled pretty well in the documentation.

prel: is relative to your player's coordinates on the grid. If you are at 10,10,10 and do something with prel:1,1,1 it will perform the action at 11,11,11.

vrel: is relative to your viewpoint in an F,Y,R scheme. Forward, Y, Right.

It's harder to explain in a simple way.

There's also hvrel (Horizontal view relative), crel (Cursor relative), trel (Target relative), tvrel (Target view relative), And then even a few more that I haven't used yet.

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##### Re: vrel vs prel
« Reply #2 on: December 05, 2016, 02:01:46 PM »
Ahh, thank you

#### Redsparx

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##### Re: vrel vs prel
« Reply #3 on: December 10, 2016, 01:10:21 PM »
It is in a manner like this:
Vrel= view-relative; (Particle [vrel:0.25,0,0] [5] [vrel:3,0,0])  a particle is moving forward about 3mps, starting from half a block away from the players view.

Prel= player/point-Relative; (SetBlock [prel:0,-1,0] [sunblock]) This sets the block underneath the player's feet [since prel is based on the feet position) from whatever block is there to a sunblock.

That is just a simplified version.