[1.7.10] Ray Trace Equivalency on server side

[Thornack]

Hi everyone,

 

I need to do this on Server Side only and get an equivalent version of it

MovingObjectPosition mop = player.rayTrace(15, 1F);
if (mop != null && !player.worldObj.isAirBlock(mop.blockX, mop.blockY, mop.blockZ) && (mop.typeOfHit == MovingObjectPosition.MovingObjectType.BLOCK || mop.typeOfHit == MovingObjectPosition.MovingObjectType.ENTITY)) {
PacketOverlord.sendToServer(new PacketUpdateOnUsingTickTargetCoord(mop.blockX, mop.blockY, mop.blockZ));
}

For some targeting code I am writing. But I am pretty bad with vectors, does anyone know of a way to get an equivalent result to the above but on server side only? I need to get the same coordinates as are sent in the packet but get those coordinates somehow via a serverside only raytrace type method

[thebest108]

Really? Nobody's bothered answering this...

 

Anyway its pretty easy to rayTrace on server side. Use the method World.rayTraceBlocks(Vec3,Vec3) to get a movingObjectPosition. The harder part is to get the look vector for the player. If I remember correctly the look vec you get from Entity.getLook() isnt the same on the server. Just write some sort of packet that sends the player look vec from the client to the server.

 

Assuming you have the look Vec the rest is easy. You'll want to use Player.getPositionVector and offset that by the player eye height (Look at player.getPositionEyes for this, that method is only on client side so you'll have to make something yourself).

 

So the first vector would be your player.getPositionEyes(), the second vector will be player.getPositionEyes().add(lookVector.multiply(Your distance to rayTrace)).

 

Hope this helps