51 lines
2.3 KiB
Markdown
51 lines
2.3 KiB
Markdown
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# Darts
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Welcome to Darts on Exercism's Elixir Track.
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If you need help running the tests or submitting your code, check out `HELP.md`.
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If you get stuck on the exercise, check out `HINTS.md`, but try and solve it without using those first :)
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## Instructions
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Write a function that returns the earned points in a single toss of a Darts game.
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[Darts][darts] is a game where players throw darts at a [target][darts-target].
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In our particular instance of the game, the target rewards 4 different amounts of points, depending on where the dart lands:
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- If the dart lands outside the target, player earns no points (0 points).
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- If the dart lands in the outer circle of the target, player earns 1 point.
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- If the dart lands in the middle circle of the target, player earns 5 points.
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- If the dart lands in the inner circle of the target, player earns 10 points.
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The outer circle has a radius of 10 units (this is equivalent to the total radius for the entire target), the middle circle a radius of 5 units, and the inner circle a radius of 1.
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Of course, they are all centered at the same point — that is, the circles are [concentric][] defined by the coordinates (0, 0).
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Write a function that given a point in the target (defined by its [Cartesian coordinates][cartesian-coordinates] `x` and `y`, where `x` and `y` are [real][real-numbers]), returns the correct amount earned by a dart landing at that point.
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## Credit
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The scoreboard image was created by [habere-et-dispertire][habere-et-dispertire] using [Inkscape][inkscape].
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[darts]: https://en.wikipedia.org/wiki/Darts
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[darts-target]: https://en.wikipedia.org/wiki/Darts#/media/File:Darts_in_a_dartboard.jpg
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[concentric]: https://mathworld.wolfram.com/ConcentricCircles.html
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[cartesian-coordinates]: https://www.mathsisfun.com/data/cartesian-coordinates.html
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[real-numbers]: https://www.mathsisfun.com/numbers/real-numbers.html
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[habere-et-dispertire]: https://exercism.org/profiles/habere-et-dispertire
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[inkscape]: https://en.wikipedia.org/wiki/Inkscape
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## Source
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### Created by
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- @jiegillet
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### Contributed to by
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- @angelikatyborska
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### Based on
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Inspired by an exercise created by a professor Della Paolera in Argentina
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