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ErikSchierboomErikSchierboom
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Add dnd-character exercise
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‎config.json

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"time"
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]
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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": "d6a7a17f-dd95-46cd-93a8-6b536b2ff4e4",
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"practices": [],
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"prerequisites": [
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"numbers"
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],
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"difficulty": 4
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},
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{
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"slug": "octal",
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"name": "Octal",

‎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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"erikschierboom"
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],
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"files": {
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"solution": [
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"src/dnd_character.clj"
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],
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"test": [
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"test/dnd_character_test.clj"
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],
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"example": [
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".meta/example.clj"
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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/example.clj

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(ns dnd-character
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(:require [clojure.math :refer [floor]]))
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(defn score-modifier [score]
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(int (floor (/ (- score 10) 2))))
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(defn- die [] (inc (rand-int 6)))
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(defn rand-ability []
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(reduce + (rest (sort (repeatedly 4 die)))))
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(defrecord DndCharacter [strength dexterity charisma wisdom intelligence constitution hitpoints])
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(defn rand-character []
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(let [abilities (repeatedly 6 rand-ability)
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[strength dexterity charisma wisdom intelligence constitution] abilities
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hitpoints (+ 10 (score-modifier constitution))]
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(DndCharacter. strength dexterity charisma wisdom intelligence constitution hitpoints)))
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‎exercises/practice/dnd-character/.meta/generator.clj

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(ns dnd-character-generator
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(:require [hbs.helper :refer [safe-str]]))
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(def random-abilities [:strength :dexterity :charisma :wisdom :intelligence :constitution])
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(defn- expand-character-test-case [test-case]
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(map
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(fn [ability]
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(-> test-case
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(update :path #(vector (str (last %) " >> " (name ability))))
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(assoc :ability (safe-str (str ability))))) random-abilities))
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(defn- expand-test-case [test-case]
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(case (:property test-case)
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"character" (expand-character-test-case test-case)
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"modifier" [(update test-case :path #(take-last 1 %))]
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[test-case]))
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(defn transform [test-cases]
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(mapcat #(expand-test-case %) test-cases))

‎exercises/practice/dnd-character/.meta/generator.tpl

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(ns dnd-character-test
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(:require [clojure.test :refer [deftest testing is]]
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dnd-character))
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{{#test_cases.modifier}}
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(deftest modifier_test_{{idx}}
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(testing {{description}}
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(is (= {{expected}} (dnd-character/score-modifier {{input.score}})))))
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{{/test_cases.modifier}}
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(deftest ability_test_1
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(testing "random ability is within range"
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(is (<= 3 (dnd-character/rand-ability) 18))))
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(deftest ability_test_2
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(testing "ability is generated randomly"
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(is (>= (count (set (repeatedly 100 #(dnd-character/rand-ability)))) 5))))
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{{#test_cases.character}}
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(deftest character_test_{{idx}}
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(testing {{description}}
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(is (<= 3 ({{ability}} (dnd-character/rand-character)) 18))))
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{{/test_cases.character}}
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(deftest character_test_7
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(testing "random character is valid >> hitpoints"
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(let [character (dnd-character/rand-character)
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expected (+ 10 (dnd-character/score-modifier (:constitution character)))]
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(is (= expected (:hitpoints character))))))
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(deftest character_test_8
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(testing "random character is generated randomly"
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(is (>= (count (set (repeatedly 100 #(dnd-character/rand-character)))) 5))))

‎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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include = false

‎exercises/practice/dnd-character/deps.edn

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{:aliases {:test {:extra-paths ["test"]
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:extra-deps {io.github.cognitect-labs/test-runner
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{:git/url "https://github.com/cognitect-labs/test-runner.git"
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:sha "705ad25bbf0228b1c38d0244a36001c2987d7337"}}
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:main-opts ["-m" "cognitect.test-runner"]
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:exec-fn cognitect.test-runner.api/test}}}

‎exercises/practice/dnd-character/project.clj

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(defproject dnd-character "0.1.0-SNAPSHOT"
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:description "dnd-character exercise."
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:url "https://github.com/exercism/clojure/tree/main/exercises/practice/dnd-character"
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:dependencies [[org.clojure/clojure "1.11.1"]])

‎exercises/practice/dnd-character/src/dnd_character.clj

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(ns dnd-character)
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(defn score-modifier
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"Calculate a score's modifier"
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[score]
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;; function body
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)
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(defn rand-ability
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"Generate a random ability"
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[]
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;; function body
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)
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(defn rand-character
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"Generate a random character"
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[]
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;; function body
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)

‎exercises/practice/dnd-character/test/dnd_character_test.clj

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(ns dnd-character-test
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(:require [clojure.test :refer [deftest testing is]]
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dnd-character))
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(deftest modifier_test_1
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(testing "ability modifier for score 3 is -4"
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(is (= -4 (dnd-character/score-modifier 3)))))
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(deftest modifier_test_2
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(testing "ability modifier for score 4 is -3"
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(is (= -3 (dnd-character/score-modifier 4)))))
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(deftest modifier_test_3
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(testing "ability modifier for score 5 is -3"
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(is (= -3 (dnd-character/score-modifier 5)))))
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(deftest modifier_test_4
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(testing "ability modifier for score 6 is -2"
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(is (= -2 (dnd-character/score-modifier 6)))))
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(deftest modifier_test_5
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(testing "ability modifier for score 7 is -2"
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(is (= -2 (dnd-character/score-modifier 7)))))
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(deftest modifier_test_6
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(testing "ability modifier for score 8 is -1"
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(is (= -1 (dnd-character/score-modifier 8)))))
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(deftest modifier_test_7
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(testing "ability modifier for score 9 is -1"
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(is (= -1 (dnd-character/score-modifier 9)))))
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(deftest modifier_test_8
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(testing "ability modifier for score 10 is 0"
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(is (= 0 (dnd-character/score-modifier 10)))))
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(deftest modifier_test_9
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(testing "ability modifier for score 11 is 0"
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(is (= 0 (dnd-character/score-modifier 11)))))
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(deftest modifier_test_10
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(testing "ability modifier for score 12 is +1"
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(is (= 1 (dnd-character/score-modifier 12)))))
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(deftest modifier_test_11
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(testing "ability modifier for score 13 is +1"
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(is (= 1 (dnd-character/score-modifier 13)))))
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(deftest modifier_test_12
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(testing "ability modifier for score 14 is +2"
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(is (= 2 (dnd-character/score-modifier 14)))))
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(deftest modifier_test_13
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(testing "ability modifier for score 15 is +2"
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(is (= 2 (dnd-character/score-modifier 15)))))
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(deftest modifier_test_14
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(testing "ability modifier for score 16 is +3"
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(is (= 3 (dnd-character/score-modifier 16)))))
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(deftest modifier_test_15
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(testing "ability modifier for score 17 is +3"
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(is (= 3 (dnd-character/score-modifier 17)))))
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(deftest modifier_test_16
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(testing "ability modifier for score 18 is +4"
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(is (= 4 (dnd-character/score-modifier 18)))))
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(deftest ability_test_1
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(testing "random ability is within range"
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(is (<= 3 (dnd-character/rand-ability) 18))))
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(deftest ability_test_2
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(testing "ability is generated randomly"
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(is (>= (count (set (repeatedly 100 #(dnd-character/rand-ability)))) 5))))
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(deftest character_test_1
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(testing "random character is valid >> strength"
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(is (<= 3 (:strength (dnd-character/rand-character)) 18))))
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(deftest character_test_2
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(testing "random character is valid >> dexterity"
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(is (<= 3 (:dexterity (dnd-character/rand-character)) 18))))
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(deftest character_test_3
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(testing "random character is valid >> charisma"
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(is (<= 3 (:charisma (dnd-character/rand-character)) 18))))
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(deftest character_test_4
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(testing "random character is valid >> wisdom"
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(is (<= 3 (:wisdom (dnd-character/rand-character)) 18))))
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(deftest character_test_5
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(testing "random character is valid >> intelligence"
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(is (<= 3 (:intelligence (dnd-character/rand-character)) 18))))
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(deftest character_test_6
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(testing "random character is valid >> constitution"
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(is (<= 3 (:constitution (dnd-character/rand-character)) 18))))
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(deftest character_test_7
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(testing "random character is valid >> hitpoints"
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(let [character (dnd-character/rand-character)
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expected (+ 10 (dnd-character/score-modifier (:constitution character)))]
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(is (= expected (:hitpoints character))))))
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(deftest character_test_8
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(testing "random character is generated randomly"
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(is (>= (count (set (repeatedly 100 #(dnd-character/rand-character)))) 5))))

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