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fixed compass error

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Compass example has error in direction detect. It will get wrong result if you write it to micro:bit.

And I also fixed degree between 315-359.
This commit is contained in:
shaoziyang 2017-09-08 00:12:55 +08:00 committed by GitHub
parent b6c778065f
commit 3fe18bc5fb
1 changed files with 13 additions and 8 deletions
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21
docs/reference/input/compass-heading.md
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@ -37,15 +37,20 @@ that means whether the @boardname@ is facing north (N), south (S),
east (E), or west (W).
```blocks
let degrees = 0
basic.forever(() => {
let degrees = input.compassHeading()
if (degrees < 45)
basic.showString("N")
else if (degrees < 135)
basic.showString("E")
else if (degrees < 225)
basic.showString("S")
else basic.showString("W")
degrees = input.compassHeading()
if (degrees < 45) {
basic.showArrow(ArrowNames.North)
} else if (degrees < 135) {
basic.showArrow(ArrowNames.West)
} else if (degrees < 225) {
basic.showArrow(ArrowNames.South)
} else if (degrees < 315) {
basic.showArrow(ArrowNames.East)
} else {
basic.showArrow(ArrowNames.North)
}
})
```