[1.8] Getting a Vec3 directed towards an entity?

[Ferrettomato]

I'm trying (and failing) to get a Vec3 that's pointed towards an entity from another entity's perspective, without bringing its look vec in to consideration. This is probably really simple, but I can't figure it out. How?

[TheGreyGhost]

Hi

 

For background info it might help to find an online introductory course into vector maths, just the simple stuff like adding & subtracting vectors, length, multiplying by a length, calculating angles between them, that sort of thing.  A lot of minecraft stuff is based on vectors...

 

The short answer is-

 

deltaVector = targetPositionVector - originPositionVector

 

targetVector is the entity being looked at.

 

for example

Entity1 = origin = located at [5, 4, 3]

Entity2 = target (being looked at) = located at [10, 11, 1]

the vector pointed from Entity1 toward Entity2 is

[10-5, 11-4, 1-3] = [5, 7, -2]

 

-TGG