pxt-common-packages
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Microsoft MakeCode (PXT) common packages
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# set Wall At
Set a tile as a wall tile in the tilemap.
```sig
tiles.setWallAt(tiles.getTileLocation(0, 0), false)
```
Wall tiles create a barrier for sprites so that they can't pass through tilemap at the tile location. You can set a tile location in the tilemap as a wall or turn it back to a regular tile.
## Parameters
* **loc**: a tile location in the tilemap.
* **on**: a [boolean](/types/boolean) value to set the tile location be a wall tile if `true` or a regular tile if `false`.
## Example #example
Make a column of tiles from top to bottom of the screen. Set a sprite in motion and set it to bounce on walls. Every `5` seconds, set the tiles in the column to be wall tiles or regular tiles.
```blocks
let isWall = false
tiles.setTilemap(tilemap`level1`)
let mySprite = sprites.create(img`
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . . . . 1 1 1 1 1 1 . . . . .
. . . 1 1 2 2 2 2 2 2 1 1 . . .
. . . 1 2 2 2 2 2 2 2 2 1 . . .
. . 1 2 2 2 2 2 2 2 2 2 2 1 . .
. . 1 2 2 2 2 2 2 2 2 2 2 1 . .
. . 1 2 2 2 2 2 2 2 2 2 2 1 . .
. . 1 2 2 2 2 2 2 2 2 2 2 1 . .
. . 1 2 2 2 2 2 2 2 2 2 2 1 . .
. . 1 2 2 2 2 2 2 2 2 2 2 1 . .
. . . 1 2 2 2 2 2 2 2 2 1 . . .
. . . 1 1 2 2 2 2 2 2 1 1 . . .
. . . . . 1 1 1 1 1 1 . . . . .
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
`, SpriteKind.Player)
mySprite.setBounceOnWall(true)
mySprite.vx = 80
mySprite.vy = 70
game.onUpdateInterval(5000, function () {
isWall = !(isWall)
for (let wallTile of tiles.getTilesByType(assets.tile`myTile`)) {
tiles.setWallAt(wallTile, isWall)
}
})
```
## See also #seealso
[get tile location](/reference/scene/get-tile-location),
[on hit wall](/reference/scene/on-hit-wall)
```jres
{
"transparency16": {
"data": "hwQQABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==",
"mimeType": "image/x-mkcd-f4",
"tilemapTile": true
},
"tile1": {
"data": "hwQQABAAAADu7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7u7g==",
"mimeType": "image/x-mkcd-f4",
"tilemapTile": true,
"displayName": "myTile"
},
"level1": {
"id": "level1",
"mimeType": "application/mkcd-tilemap",
"data": "MTAwYTAwMDgwMDAwMDAwMDAwMDEwMDAwMDAwMDAwMDAwMDAwMDAwMDAxMDAwMDAwMDAwMDAwMDAwMDAxMDAwMDAwMDAwMDAwMDAwMDAwMDAwMTAwMDAwMDAwMDAwMDAwMDAwMTAwMDAwMDAwMDAwMDAwMDAwMDAwMDEwMDAwMDAwMDAwMDAwMDAwMDEwMDAwMDAwMDAwMDAwMDAwMDAwMDAxMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMA==",
"tileset": [
"myTiles.transparency16",
"myTiles.tile1"
],
"displayName": "level1"
},
"*": {
"mimeType": "image/x-mkcd-f4",
"dataEncoding": "base64",
"namespace": "myTiles"
}
}
```