Commands/detect

Detects if there is a collidable block in the specified direction.

Arguments

 * direction: string
 * Specifies the direction of Agent to detect a collidable block.
 * Must be one of:
 * to detect the block on the front.
 * to detect the block on the back.
 * to detect the block on the left-hand side.
 * to detect the block on the right-hand side.
 * to detect the block on the top side.
 * to detect the block on the bottom side.

Result
Fails if the arguments are not specified correctly.

On success, returns if there was a collidable block in the specified direction.