diff --git a/config.json b/config.json index b7b56b0..0c25d3a 100644 --- a/config.json +++ b/config.json @@ -118,6 +118,14 @@ "math" ] }, + { + "slug": "dnd-character", + "name": "D&D Character", + "uuid": "eb38bf54-c597-4856-bf1d-3867d75ae586", + "practices": [], + "prerequisites": [], + "difficulty": 4 + }, { "slug": "pop-count", "name": "Eliud's Eggs", diff --git a/exercises/practice/dnd-character/.docs/instructions.md b/exercises/practice/dnd-character/.docs/instructions.md new file mode 100644 index 0000000..b0a6035 --- /dev/null +++ b/exercises/practice/dnd-character/.docs/instructions.md @@ -0,0 +1,31 @@ +# Instructions + +For a game of [Dungeons & Dragons][dnd], each player starts by generating a character they can play with. +This character has, among other things, six abilities; strength, dexterity, constitution, intelligence, wisdom and charisma. +These six abilities have scores that are determined randomly. +You do this by rolling four 6-sided dice and record the sum of the largest three dice. +You do this six times, once for each ability. + +Your character's initial hitpoints are 10 + your character's constitution modifier. +You find your character's constitution modifier by subtracting 10 from your character's constitution, divide by 2 and round down. + +Write a random character generator that follows the rules above. + +For example, the six throws of four dice may look like: + +- 5, 3, 1, 6: You discard the 1 and sum 5 + 3 + 6 = 14, which you assign to strength. +- 3, 2, 5, 3: You discard the 2 and sum 3 + 5 + 3 = 11, which you assign to dexterity. +- 1, 1, 1, 1: You discard the 1 and sum 1 + 1 + 1 = 3, which you assign to constitution. +- 2, 1, 6, 6: You discard the 1 and sum 2 + 6 + 6 = 14, which you assign to intelligence. +- 3, 5, 3, 4: You discard the 3 and sum 5 + 3 + 4 = 12, which you assign to wisdom. +- 6, 6, 6, 6: You discard the 6 and sum 6 + 6 + 6 = 18, which you assign to charisma. + +Because constitution is 3, the constitution modifier is -4 and the hitpoints are 6. + +## Notes + +Most programming languages feature (pseudo-)random generators, but few programming languages are designed to roll dice. +One such language is [Troll][troll]. + +[dnd]: https://en.wikipedia.org/wiki/Dungeons_%26_Dragons +[troll]: https://di.ku.dk/Ansatte/?pure=da%2Fpublications%2Ftroll-a-language-for-specifying-dicerolls(84a45ff0-068b-11df-825d-000ea68e967b)%2Fexport.html diff --git a/exercises/practice/dnd-character/.meta/config.json b/exercises/practice/dnd-character/.meta/config.json new file mode 100644 index 0000000..f95a79f --- /dev/null +++ b/exercises/practice/dnd-character/.meta/config.json @@ -0,0 +1,19 @@ +{ + "authors": [ + "BNAndras" + ], + "files": { + "solution": [ + "dnd_character.vim" + ], + "test": [ + "dnd_character.vader" + ], + "example": [ + ".meta/example.vim" + ] + }, + "blurb": "Randomly generate Dungeons & Dragons characters.", + "source": "Simon Shine, Erik Schierboom", + "source_url": "https://github.com/exercism/problem-specifications/issues/616#issuecomment-437358945" +} diff --git a/exercises/practice/dnd-character/.meta/example.vim b/exercises/practice/dnd-character/.meta/example.vim new file mode 100644 index 0000000..3918535 --- /dev/null +++ b/exercises/practice/dnd-character/.meta/example.vim @@ -0,0 +1,26 @@ +function! Modifier(score) abort + return float2nr(floor((a:score - 10) / 2.0)) +endfunction + +function! Ability() abort + let l:rolls = map(repeat([0], 4), '(rand() % 6) + 1') + let l:kept = sort(l:rolls)[1:] + + let l:sum = 0 + for l:dice in l:kept + let l:sum += l:dice + endfor + + return l:sum +endfunction + +function! Character() abort + let l:constitution = Ability() + return {'strength': Ability(), + \ 'dexterity': Ability(), + \ 'constitution': l:constitution, + \ 'intelligence': Ability(), + \ 'wisdom': Ability(), + \ 'charisma': Ability(), + \ 'hitpoints': 10 + Modifier(l:constitution)} +endfunction diff --git a/exercises/practice/dnd-character/.meta/tests.toml b/exercises/practice/dnd-character/.meta/tests.toml new file mode 100644 index 0000000..44b3c20 --- /dev/null +++ b/exercises/practice/dnd-character/.meta/tests.toml @@ -0,0 +1,73 @@ +# This is an auto-generated file. +# +# Regenerating this file via `configlet sync` will: +# - Recreate every `description` key/value pair +# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications +# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion) +# - Preserve any other key/value pair +# +# As user-added comments (using the # character) will be removed when this file +# is regenerated, comments can be added via a `comment` key. + +[1e9ae1dc-35bd-43ba-aa08-e4b94c20fa37] +description = "ability modifier -> ability modifier for score 3 is -4" + +[cc9bb24e-56b8-4e9e-989d-a0d1a29ebb9c] +description = "ability modifier -> ability modifier for score 4 is -3" + +[5b519fcd-6946-41ee-91fe-34b4f9808326] +description = "ability modifier -> ability modifier for score 5 is -3" + +[dc2913bd-6d7a-402e-b1e2-6d568b1cbe21] +description = "ability modifier -> ability modifier for score 6 is -2" + +[099440f5-0d66-4b1a-8a10-8f3a03cc499f] +description = "ability modifier -> ability modifier for score 7 is -2" + +[cfda6e5c-3489-42f0-b22b-4acb47084df0] +description = "ability modifier -> ability modifier for score 8 is -1" + +[c70f0507-fa7e-4228-8463-858bfbba1754] +description = "ability modifier -> ability modifier for score 9 is -1" + +[6f4e6c88-1cd9-46a0-92b8-db4a99b372f7] +description = "ability modifier -> ability modifier for score 10 is 0" + +[e00d9e5c-63c8-413f-879d-cd9be9697097] +description = "ability modifier -> ability modifier for score 11 is 0" + +[eea06f3c-8de0-45e7-9d9d-b8cab4179715] +description = "ability modifier -> ability modifier for score 12 is +1" + +[9c51f6be-db72-4af7-92ac-b293a02c0dcd] +description = "ability modifier -> ability modifier for score 13 is +1" + +[94053a5d-53b6-4efc-b669-a8b5098f7762] +description = "ability modifier -> ability modifier for score 14 is +2" + +[8c33e7ca-3f9f-4820-8ab3-65f2c9e2f0e2] +description = "ability modifier -> ability modifier for score 15 is +2" + +[c3ec871e-1791-44d0-b3cc-77e5fb4cd33d] +description = "ability modifier -> ability modifier for score 16 is +3" + +[3d053cee-2888-4616-b9fd-602a3b1efff4] +description = "ability modifier -> ability modifier for score 17 is +3" + +[bafd997a-e852-4e56-9f65-14b60261faee] +description = "ability modifier -> ability modifier for score 18 is +4" + +[4f28f19c-2e47-4453-a46a-c0d365259c14] +description = "random ability is within range" + +[385d7e72-864f-4e88-8279-81a7d75b04ad] +description = "random character is valid" + +[2ca77b9b-c099-46c3-a02c-0d0f68ffa0fe] +description = "each ability is only calculated once" +include = false + +[dca2b2ec-f729-4551-84b9-078876bb4808] +description = "each ability is only calculated once" +reimplements = "2ca77b9b-c099-46c3-a02c-0d0f68ffa0fe" +include = false diff --git a/exercises/practice/dnd-character/dnd_character.vader b/exercises/practice/dnd-character/dnd_character.vader new file mode 100644 index 0000000..c494140 --- /dev/null +++ b/exercises/practice/dnd-character/dnd_character.vader @@ -0,0 +1,120 @@ + +Execute (ability modifier for score 3 is -4): + let g:score = 3 + let g:expected = -4 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 4 is -3): + let g:score = 4 + let g:expected = -3 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 5 is -3): + let g:score = 5 + let g:expected = -3 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 6 is -2): + let g:score = 6 + let g:expected = -2 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 7 is -2): + let g:score = 7 + let g:expected = -2 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 8 is -1): + let g:score = 8 + let g:expected = -1 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 9 is -1): + let g:score = 9 + let g:expected = -1 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 10 is 0): + let g:score = 10 + let g:expected = 0 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 11 is 0): + let g:score = 11 + let g:expected = 0 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 12 is +1): + let g:score = 12 + let g:expected = 1 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 13 is +1): + let g:score = 13 + let g:expected = 1 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 14 is +2): + let g:score = 14 + let g:expected = 2 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 15 is +2): + let g:score = 15 + let g:expected = 2 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 16 is +3): + let g:score = 16 + let g:expected = 3 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 17 is +3): + let g:score = 17 + let g:expected = 3 + AssertEqual g:expected, Modifier(g:score) + +Execute (ability modifier for score 18 is +4): + let g:score = 18 + let g:expected = 4 + AssertEqual g:expected, Modifier(g:score) + +Execute (random ability is within range): + let g:score = Ability() + Assert g:score >= 3 && g:score <= 18 + +Execute (random character is valid): + let g:char = Character() + let g:isValid = 1 + + let g:abilities = ['strength', 'dexterity', 'constitution', 'intelligence', 'wisdom', 'charisma'] + for g:ability in g:abilities + let g:score = g:char[g:ability] + + let g:isValid = g:isValid && (g:score >= 3 && g:score <= 18) + if g:isValid == 0 + break + endif + endfor + + let g:hitpoints = g:char['hitpoints'] + let g:isValid = g:isValid && (g:hitpoints >= 6 && g:hitpoints <= 14) + AssertEqual 1, isValid + +# track-specific test +Execute (character is randomly generated): + let g:previous = Character() + let g:noChange = 0 + + for _ in range(1000) + let g:current = Character() + let g:noChange = g:current != g:previous + + if g:noChange == 0 + break + endif + + let g:previous = g:current + endfor + + AssertEqual 1, noChange diff --git a/exercises/practice/dnd-character/dnd_character.vim b/exercises/practice/dnd-character/dnd_character.vim new file mode 100644 index 0000000..345c77d --- /dev/null +++ b/exercises/practice/dnd-character/dnd_character.vim @@ -0,0 +1,20 @@ +" +" Calculates the constitution modifier using the passed ability score +" +function! Modifier(score) abort + " your implemention goes here +endfunction + +" +" Calculates an ability score randomly by summing the top three of four randomly generated numbers +" +function! Ability() abort + " your implemention goes here +endfunction + +" +" Returns a dictionary representing a D&D character with randomly generated ability scores +" +function! Character() abort + " your implemention goes here +endfunction