(Redirected from Distance (Sensing value))
|Distance to ()|
If there is nothing in the drop-down insert of the block, or if a sprite that was deleted is still in the drop-down insert, it reports the distance as 0.
This block is case-sensitive.
As this block can give distances between objects, it is very useful in projects that require a great deal of careful sensing and movement.
Some common uses for the Distance to () block:
- Estimating when collisions will occur
if <(distance to [snowball v]) < (40)> then say [Watch out!] wait until <touching [snowball v]?> say  // stop saying the message stop [all v]
- Helping determine how long it should take a sprite to move somewhere, judging from the distance
set [movements v] to ([ceiling v] of ((distance to [meteor v]) / (10))) // "movements" being the amount of 10 pixel motions to reach the meteor
- Determining how far a rocket should fire
set [real distance v] to (join ((distance to [asteroid v]) * (10000)) [ kilometers]) // for relating pixel distance to real life
- Detecting distances from an invisible sprite and displaying the score as a game
change [score v] by ((1800) - ((10) * (distance to [bullseye v])))
- Making a variable change when you move the sprite around from another sprite
forever set [safety v] to ((100) - ((distance to [house v]) / (3))
- Main article: List of Block Workarounds
This block can be replicated with the following code:
([sqrt v] of ((((x position) - ([x position v] of [Wanted Sprite v])) * ((x position) - ([x position v] of [Wanted Sprite v]))) + (((y position) - ([y position v] of [Wanted Sprite v])) *((y position) - ([y position v] of [Wanted Sprite v])))))
(distance to x: () y: ():: sensing)
It is technically unnecessary because it can be replicated with a similar workaround:
([sqrt v] of ((((x position) - (wanted x)) * ((x position) - (wanted x))) + (((y position) - (wanted y)) * ((y position) - (wanted y)))))