Dropped items are spasming on the ground about truecraft HOT 4 CLOSED

Yeah, physics are weird.

from truecraft.

I'm wondering if all these calls:

+ new Vector3(0.5)

in the PhysicsEngine classes in both the server and the client are partially responsible. This seems incorrect, as the BlockProvider returns a bounding box of [0, 1] by default, not [-0.5, 0.5].

from truecraft.

That's not why. That just moves the item entity to the middle of the block it was mined from. Spasming is because TrueCraft physics are janky.

from truecraft.

Hmm. Because when I removed the '0.5' offset from the Y axis collision, it seemed to stop the problem on the ground (but not in the air)

Edit: Okay, I see what you said about the physics. But I have a few questions:

1. Why are entity bounding boxes [Position, Position + Size]? Shouldn't they be [(pos.X - size.X / 2, pos.Y, pos.Z - size.Z / 2), (pos.X + size.X / 2, pos.Y + size.Y, pos.Z + size.Z / 2)]
2. What's the reasoning behind these:

entity.Velocity.Z - (TempBoundingBox.Min.Z - collisionPoint.Value));

Shouldn't the velocity on the axis of collision just be 0?
3) Shouldn't the offsetting of the horizontal axes by 0.5 belong in the ItemEntity class, rather than the PhysicsEngine?
4) Shouldn't

collision = position;

Be adjusted to reflect that velocity components less than 0 collide with the max component of the block bounding box, not the min? Also, that some blocks may not have a min point of 0?
5) Shouldn't 'collision' only be assigned when the 'collisionPoint' variable is changed?

from truecraft.