Ladders and Vines

Hitbox
Visually, ladders seem to be a flat texture 1 pixel away from the voxel's side.

In reality, ladders are 2 pixels wide (0.125b), making them the thinnest block in the game (along with panes).

Vines are intangible, but their properties are identical to ladders

In 1.9+, ladders are 1 pixel wider, making their new hitbox comparable to trapdoors (3px in width, or 0.1875b).

Properties
While inside the effect hitbox, Movement mechanics are affected in two ways:


 * Colliding with any wall will make the Player climb at a constant rate of 0.1176 b/t
 * Sneaking will prevent the Player from falling.

Ladders and vines also have a few effects on Movement:


 * Horizontal speeds (X/Z) are capped at 0.15 b/t
 * Vertical speed (Y) has a lower bound of -0.15 b/t