start lantern effect

Problem it solves

You are making a spooky dungeon game and want the screen to be pitch black except for a glowing circle of light centered on the player.

Turns on the single-lantern darkness effect and anchors the glowing circle of light to follow a specified sprite.

Name	Type	Default	Meaning
anchor	Sprite	mySprite	The sprite that the center of the lantern light will follow.

let player = sprites.create(img`.`, SpriteKind.Player)
controller.moveSprite(player)
lantern.startLanternEffect(player)

Add github:felixtsu/pxt-lantern to your project, or open: Import pxt-lantern.