Is Passable (Condition) — Skript
Addon: Skript · Category: Condition · Since: 2.5.1
Syntax
%blocks% (is|are) passableDescription
Checks whether a block is passable. A block is passable if it has no colliding parts that would prevent players from moving through it. Blocks like tall grass, flowers, signs, etc. are passable, but open doors, fence gates, trap doors, etc. are not because they still have parts that can be collided with.
Examples
if player's targeted block is passable