Velocity towards a certain point

Let's say I spawn an arrow entity just above my player.
Is it possible to set it's velocity so it will land exactly at a marked spot?
So it will shoot up higher/faster if it's far away etc.

 

Hello, you could save the distance as a variable, then multiply the vector depending on the distance, tho i think there's a method to set exact travel route for Entities. Not sure...

 

Yeah, so I'm having trouble with this that's why I posted here.
Please post a snippet of code that could help me calculating everything, I'm bad at mathematics

 

I think it's very difficult to have it land at an exact spot unless you set the arrow speed so high that it basically avoids gravity.

To fire it "towards" a certain point, you want to use a little bit of geometry for that

If you have two points, A and B, the direction from one to the other is the line segment that connects them. A vector is basically a line segment with one end at the origin, so to get a direction vector from two points you subtract one from the other- making one of them the origin.

Translated to code, that would look like:
// Assume you have two Location's, playerLocation and targetLocation
Vector direction = targetLocation.toVector().subtract(playerLocation.toVector());

This will give you a direction from the first point to the second. Firing an arrow with this vector should approximate firing an arrow as if the target were under your crosshairs- but this does not account for gravity, just like you would have to if you were shooting the bow normally.

Hope that helps!

 

Additionally you can also constantly reset the arrows velocity each tick to the wanted direction and speed. That way you can avoid the gravity influence.