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Merge pull request #116 from SimaDovakin/dnd-character-exercise
Dnd character exercise
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‎config.json

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"practices": [],
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"prerequisites": [],
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"difficulty": 1
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},
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{
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"slug": "dnd-character",
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"name": "D&D Character",
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"uuid": "206aa747-6c85-4438-a509-174febabb01a",
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"practices": [],
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"prerequisites": [],
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"difficulty": 1
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}
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]
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},

‎exercises/practice/dnd-character/.docs/instructions.append.md

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# Hints
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There are some important concepts that are necessary for this task:
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- [Abilities](https://www.unison-lang.org/docs/fundamentals/abilities/) in Unison.
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- [Delayed computations](https://www.unison-lang.org/docs/fundamentals/values-and-functions/delayed-computations/).

‎exercises/practice/dnd-character/.docs/instructions.md

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# Instructions
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For a game of [Dungeons & Dragons][dnd], each player starts by generating a character they can play with.
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This character has, among other things, six abilities; strength, dexterity, constitution, intelligence, wisdom and charisma.
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These six abilities have scores that are determined randomly.
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You do this by rolling four 6-sided dice and recording the sum of the largest three dice.
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You do this six times, once for each ability.
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Your character's initial hitpoints are 10 + your character's constitution modifier.
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You find your character's constitution modifier by subtracting 10 from your character's constitution, divide by 2 and round down.
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Write a random character generator that follows the above rules.
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For example, the six throws of four dice may look like:
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- 5, 3, 1, 6: You discard the 1 and sum 5 + 3 + 6 = 14, which you assign to strength.
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- 3, 2, 5, 3: You discard the 2 and sum 3 + 5 + 3 = 11, which you assign to dexterity.
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- 1, 1, 1, 1: You discard the 1 and sum 1 + 1 + 1 = 3, which you assign to constitution.
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- 2, 1, 6, 6: You discard the 1 and sum 2 + 6 + 6 = 14, which you assign to intelligence.
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- 3, 5, 3, 4: You discard the 3 and sum 5 + 3 + 4 = 12, which you assign to wisdom.
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- 6, 6, 6, 6: You discard the 6 and sum 6 + 6 + 6 = 18, which you assign to charisma.
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Because constitution is 3, the constitution modifier is -4 and the hitpoints are 6.
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~~~~exercism/note
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Most programming languages feature (pseudo-)random generators, but few programming languages are designed to roll dice.
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One such language is [Troll][troll].
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[troll]: https://di.ku.dk/Ansatte/?pure=da%2Fpublications%2Ftroll-a-language-for-specifying-dicerolls(84a45ff0-068b-11df-825d-000ea68e967b)%2Fexport.html
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~~~~
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[dnd]: https://en.wikipedia.org/wiki/Dungeons_%26_Dragons

‎exercises/practice/dnd-character/.docs/introduction.md

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# Introduction
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After weeks of anticipation, you and your friends get together for your very first game of [Dungeons & Dragons][dnd] (D&D).
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Since this is the first session of the game, each player has to generate a character to play with.
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The character's abilities are determined by rolling 6-sided dice, but where _are_ the dice?
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With a shock, you realize that your friends are waiting for _you_ to produce the dice; after all it was your idea to play D&D!
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Panicking, you realize you forgot to bring the dice, which would mean no D&D game.
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As you have some basic coding skills, you quickly come up with a solution: you'll write a program to simulate dice rolls.
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[dnd]: https://en.wikipedia.org/wiki/Dungeons_%26_Dragons

‎exercises/practice/dnd-character/.meta/config.json

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{
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"authors": [
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"SimaDovakin"
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],
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"contributors": [
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"rlmark"
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],
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"files": {
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"solution": [
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"dndCharacter.u"
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],
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"test": [
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"dndCharacter.test.u"
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],
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"example": [
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".meta/examples/dndCharacter.example.u"
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]
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},
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"blurb": "Randomly generate Dungeons & Dragons characters.",
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"source": "Simon Shine, Erik Schierboom",
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"source_url": "https://github.com/exercism/problem-specifications/issues/616#issuecomment-437358945"
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}

‎exercises/practice/dnd-character/.meta/examples/dndCharacter.example.u

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unique type dndCharacter.Character = { strength : Nat
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, dexterity : Nat
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, constitution : Nat
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, intelligence : Nat
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, wisdom : Nat
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, charisma : Nat
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, hitpoints : Nat
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}
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dndCharacter.modifier : Nat -> Int
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dndCharacter.modifier score =
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use Int - div
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score
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|> Nat.toInt
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|> (c -> c - +10)
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|> (c -> div c +2)
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dndCharacter.ability_ : '{Random} Nat
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dndCharacter.ability_ = do
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'(Random.natIn 1 7)
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|> List.replicate 4
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|> List.sort
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|> List.slice 1 4
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|> Nat.sum
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dndCharacter.character : '{Random} Character
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dndCharacter.character = do
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strength = !ability_
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dexterity = !ability_
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constitution = !ability_
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intelligence = !ability_
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wisdom = !ability_
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charisma = !ability_
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mod = modifier constitution
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hitpoints = Int.abs (+10 Int.+ mod)
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Character
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strength
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dexterity
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constitution
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intelligence
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wisdom
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charisma
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hitpoints

‎exercises/practice/dnd-character/.meta/testAnnotation.json

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[
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{
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"test_code": "input = 18\n expected = 4\n label \"computes the modifier for 18 to be 4\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex1"
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},
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{
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"test_code": "input = 17\n expected = 3\n label \"computes the modifier for 17 to be 3\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex2"
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},
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{
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"test_code": "input = 16\n expected = 3\n label \"computes the modifier for 16 to be 3\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex3"
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},
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{
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"test_code": "input = 15\n expected = 2\n label \"computes the modifier for 15 to be 2\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex4"
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},
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{
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"test_code": "input = 14\n expected = 2\n label \"computes the modifier for 14 to be 2\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex5"
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},
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{
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"test_code": "input = 13\n expected = 1\n label \"computes the modifier for 13 to be 1\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex6"
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},
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{
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"test_code": "input = 12\n expected = 1\n label \"computes the modifier for 12 to be 1\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex7"
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},
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{
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"test_code": "input = 11\n expected = 0\n label \"computes the modifier for 11 to be 0\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex8"
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},
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{
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"test_code": "input = 10\n expected = 0\n label \"computes the modifier for 10 to be 0\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex9"
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},
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{
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"test_code": "input = 9\n expected = -1\n label \"computes the modifier for 9 to be -1\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex10"
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},
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{
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"test_code": "input = 8\n expected = -1\n label \"computes the modifier for 8 to be -1\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex11"
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},
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{
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"test_code": "input = 7\n expected = -2\n label \"computes the modifier for 7 to be -2\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex12"
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},
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{
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"test_code": "input = 6\n expected = -2\n label \"computes the modifier for 6 to be -2\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex13"
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},
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{
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"test_code": "input = 5\n expected = -3\n label \"computes the modifier for 5 to be -3\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex14"
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},
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{
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"test_code": "input = 4\n expected = -3\n label \"computes the modifier for 4 to be -3\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex15"
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},
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{
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"test_code": "input = 3\n expected = -4\n label \"computes the modifier for 3 to be -4\" <| expect (expected == modifier input)",
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"name": "dndCharacter.test.testModifier.ex16"
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},
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{
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"test_code": "do\n seed = !nat\n calculatedAbility = Random.lcg seed ability_\n label \"generates value within range\" <| expect (Nat.inRange 3 19 calculatedAbility)\n",
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"name": "dndCharacter.test.testAbility"
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},
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{
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"test_code": "do\n seed = !nat\n (Character strength dexterity constitution intelligence wisdom charisma hitpoints) = Random.lcg seed character\n expectedHitpoints = Int.abs (+10 Int.+ modifier constitution)\n expect ((Nat.inRange 3 19 strength) && (Nat.inRange 3 19 dexterity) && (Nat.inRange 3 19 constitution) && (Nat.inRange 3 19 intelligence) && (Nat.inRange 3 19 wisdom) && (Nat.inRange 3 19 charisma) && (hitpoints == expectedHitpoints)\n ) |> label \"generates valid character\"",
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"name": "dndCharacter.test.testCharacter"
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}
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]

‎exercises/practice/dnd-character/.meta/testLoader.md

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# Testing transcript
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```ucm
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.> load ./dndCharacter.u
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.> add
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.> load ./dndCharacter.test.u
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.> add
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.> move.term dndCharacter.tests tests
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```

‎exercises/practice/dnd-character/.meta/tests.toml

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# This is an auto-generated file.
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#
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# Regenerating this file via `configlet sync` will:
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# - Recreate every `description` key/value pair
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# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
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# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
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# - Preserve any other key/value pair
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#
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# As user-added comments (using the # character) will be removed when this file
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# is regenerated, comments can be added via a `comment` key.
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[1e9ae1dc-35bd-43ba-aa08-e4b94c20fa37]
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description = "ability modifier -> ability modifier for score 3 is -4"
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[cc9bb24e-56b8-4e9e-989d-a0d1a29ebb9c]
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description = "ability modifier -> ability modifier for score 4 is -3"
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[5b519fcd-6946-41ee-91fe-34b4f9808326]
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description = "ability modifier -> ability modifier for score 5 is -3"
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[dc2913bd-6d7a-402e-b1e2-6d568b1cbe21]
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description = "ability modifier -> ability modifier for score 6 is -2"
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[099440f5-0d66-4b1a-8a10-8f3a03cc499f]
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description = "ability modifier -> ability modifier for score 7 is -2"
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[cfda6e5c-3489-42f0-b22b-4acb47084df0]
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description = "ability modifier -> ability modifier for score 8 is -1"
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[c70f0507-fa7e-4228-8463-858bfbba1754]
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description = "ability modifier -> ability modifier for score 9 is -1"
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[6f4e6c88-1cd9-46a0-92b8-db4a99b372f7]
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description = "ability modifier -> ability modifier for score 10 is 0"
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[e00d9e5c-63c8-413f-879d-cd9be9697097]
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description = "ability modifier -> ability modifier for score 11 is 0"
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[eea06f3c-8de0-45e7-9d9d-b8cab4179715]
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description = "ability modifier -> ability modifier for score 12 is +1"
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[9c51f6be-db72-4af7-92ac-b293a02c0dcd]
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description = "ability modifier -> ability modifier for score 13 is +1"
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[94053a5d-53b6-4efc-b669-a8b5098f7762]
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description = "ability modifier -> ability modifier for score 14 is +2"
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[8c33e7ca-3f9f-4820-8ab3-65f2c9e2f0e2]
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description = "ability modifier -> ability modifier for score 15 is +2"
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[c3ec871e-1791-44d0-b3cc-77e5fb4cd33d]
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description = "ability modifier -> ability modifier for score 16 is +3"
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[3d053cee-2888-4616-b9fd-602a3b1efff4]
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description = "ability modifier -> ability modifier for score 17 is +3"
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[bafd997a-e852-4e56-9f65-14b60261faee]
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description = "ability modifier -> ability modifier for score 18 is +4"
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[4f28f19c-2e47-4453-a46a-c0d365259c14]
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description = "random ability is within range"
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[385d7e72-864f-4e88-8279-81a7d75b04ad]
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description = "random character is valid"
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[2ca77b9b-c099-46c3-a02c-0d0f68ffa0fe]
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description = "each ability is only calculated once"
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include = false
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[dca2b2ec-f729-4551-84b9-078876bb4808]
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description = "each ability is only calculated once"
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reimplements = "2ca77b9b-c099-46c3-a02c-0d0f68ffa0fe"

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