Solved I need a location iterator that uses exact decimal locations

Solved.

 

guangong4

Do you even understand what the class does? It's pretty clear you copied the BlockIterator class verbatim ...

 

AoH_Ruthless
I understand what it does as a whole and how to use it, but not exactly in each line / method. If you could provide a brief explanation and point me in the right way, I could accomplish what I'm trying to do on my own.

I've been using BlockIterator to make lines of particle/block break effects, but these don't appear in a perfect line all the time. That's what I'm trying to change.

 

guangong4
Why not use the normal BlockIterator? Then, while the BlockIterator#hasNext(), you could get the location of the next block and send some sort of particle effect to players at that location. I would try that anyways, to see if it provides a relatively straight line.

Wouldn't a straight line only be present if the yaw and pitch were multiples of 90? I am not sure though, haven't really delved too deep into the actual meaning of the BlockIterator class.

 

guangong4 So basically, you want a way to iterate along a line with a custom distance? That's pretty easy.

Code:

import org.bukkit.util.Vector;
import org.bukkit.Location;
 
public class RayTrace {
 
    Vector direction, currentPos;
 
    public RayTrace(Location origin) {
        this.currentPos = new Vector(origin.getX(), origin.getY(), origin.getZ());
        this.direction = RayTrace.toVector(origin.getYaw(), origin.getPitch());
    }
 
    public Vector iterate(double distance) {
        return (this.currentPos = this.currentPos.add(direction));
    }
 
    public static Vector toVector(float yaw, float pitch) {
        float rotX = yaw, rotY = pitch, cosY = Math.cos(Math.toRadians(rotY));
 
        float x = (-cosY * Math.sin(Math.toRadians(rotX))),
                y = (-Math.sin(Math.toRadians(rotY))),
                z = (cosY * Math.cos(Math.toRadians(rotX)));
 
        return new Vector(x, y, z); // you may have to cast to double here
    }       
 
}

Now you can just use this class whenever necessary:

Code:

RayTrace trace = new RayTrace(player.getLocation());
for(int i = 0; i < maxDistance / distancePerIteration; ++i) {
    Vector target = trace.iterate(distancePerIteration);
    // do stuff with the new target
}

EDIT: in the above example, maxDistance * distancePerIteration should be maxDistance / distancePerIteration.

 

afistofirony
Thanks! It works perfectly.
I just want to know, where is the distance argument for RayTrace.iterate used?

 

guangong4 oops, I should probably fix that.

I also didn't realize Bukkit's Vector class is mutable, so this should account for that as well.

Code:

    public Vector iterate(double distance) {
        return  this.currentPos.add(direction.clone().multiply(distance));
    }