Snap the dot is a kill game where the player has to press **A** exactly when the dot
is in the center of the screen.
This is a tutorial to learn how to use the game engine.
## Create a sprite @fullscreen
Drag a ``||game:create sprite||`` block in the workspace. A sprite is a single pixel that can move on the screen. It has a ``x``, ``y`` position and a direction.
```blocks
let sprite: game.LedSprite = null
sprite = game.createSprite(2, 2)
```
## Move the dot @fullscreen
The sprite starts in the center facing right. Drag a
``||game:move||`` block in the forever to make it move.
Notice how it moves to the right but does not bounce back.
```blocks
let sprite: game.LedSprite = null
sprite = game.createSprite(2, 2)
basic.forever(function () {
sprite.move(1)
})
```
## Bounce @fullscreen
Drag a ``||game:ifOnEdgeBounce||`` block to make the sprite
bounce on the side of the screen. Add also a ``||basic:pause||`` block to slow down the sprite.
```blocks
let sprite: game.LedSprite = null
sprite = game.createSprite(2, 2)
basic.forever(function () {
sprite.move(1)
sprite.ifOnEdgeBounce()
basic.pause(100)
})
```
## Test and download
Use the simulator to find the best speed. If you have a @boardname@, press ``Download``
to try it out on the device.
## Button handling @fullscreen
When **A** is pressed, we test if the sprite is in the center or not.
Drag a ``||input:on button pressed||`` block to handle the **A** button.
Drag a ``||logic:if||`` block and test if ``||game:x||`` is equal to 2.
