Redstone Input Port

The Redstone Input Port is an upgrade which allows web pages to read the redstone levels around the screen.

Recipe

The item on the left is a Blank Upgrade.

JavaScript

The upgrade name returned by GetUpgrades is webdisplays:redinput.

If this upgrade is used in combination with the Redstone Output Port upgrade, the redstone level obtained by any of these functions/callbacks on an emitting block is undefined.

Functions

This upgrade adds the following functions:

Query name	Arguments	Return value	Comment
GetRedstoneAt	int, int	{"level":int}	0, 0 is the bottom left block. Rotation is not handled.
GetRedstoneArray	None	{"levels":[int]}	The block x, y is at levels[y * width + x]

Callbacks

This upgrade adds the following callbacks:

• webdisplaysRedstoneCallback(x, y, level) will be called if the redstone level of the block at x, y has changed.