[Solved] [1.19] Heading between two objects

[Scytale]

I am struggling to figure out how to calculate the heading for a projectile, i.e. in .shoot or setArrowHeading, between two entities.

For example, if I have entities A and B, and I want a projectile to fire from A to B but want to ignore the facing, I had thought it would have been simple enough to do ...

x = target.getX() - firer.getX()

... for x, y and z. This seems to fire it in weird and wonderful directions.

After much Googling, it is still not clear to me what I should be passing into shoot for pX, pY and pZ.

Any tips or suggestions would be really appreciated. 

Edited December 28, 2022 by Scytale

[MFMods]

if the idea requires mathematical knowledge that you do not have (working with angles) and programming skills you do not have (skipping math and finding a way to reuse existing projectile logic), why are you still working on this mod? surely you can come up with a mod idea without impassable barriers.

[Scytale]

  On 12/16/2022 at 4:57 PM, MFMods said:

if the idea requires mathematical knowledge that you do not have ...

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My experience to date, in this forum, has been some wonderful friendly people who were willing to help and provide some kind assistance.

[Scytale]

Aside from the passive aggressive response, there was a tip buried there ... mathematical knowledge.

For closure ...

The heading between two entities is a rotation around the x and y axis - x for horizonal rotation and y for vertical. Thus simple trigonometry is used to calculate the angle of rotation between the x,y coordinates of the two entities.