.gitignore

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+### VisualStudio template
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/main/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUnit
+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.tlog
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# NuGet Symbol Packages
+*.snupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio 6 auto-generated project file (contains which files were open etc.)
+*.vbp
+
+# Visual Studio 6 workspace and project file (working project files containing files to include in project)
+*.dsw
+*.dsp
+
+# Visual Studio 6 technical files
+*.ncb
+*.aps
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# Visual Studio History (VSHistory) files
+.vshistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd
+
+# VS Code files for those working on multiple tools
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.code-workspace
+
+# Local History for Visual Studio Code
+.history/
+
+# Windows Installer files from build outputs
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# JetBrains Rider
+*.sln.iml
+

pflib-net.Tests/characters/PlayerCharacterTest.cs

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+using System.Collections.Generic;
+using NUnit.Framework;
+using pflib_net.characters.internals.characters;
+using pflib_net.characters.internals.characters.internals.proficiencies;
+
+namespace pflib_net.characters.internals.Tests.characters;
+
+[TestFixture]
+[TestOf(typeof(PlayerCharacter))]
+public class PlayerCharacterTest
+{
+
+    [Test]
+    public void DamageReducesHp()
+    {
+        var stats = new Stats(0, 0, 0, 0, 0, 0);
+        var armorValues = new Dictionary<ProficiencyTypes, ProficiencyValues>
+        {
+            { ProficiencyTypes.Unarmored, ProficiencyValues.Expert },
+            { ProficiencyTypes.LightArmor, ProficiencyValues.None },
+            { ProficiencyTypes.MediumArmor, ProficiencyValues.None },
+            { ProficiencyTypes.HeavyArmor, ProficiencyValues.None }
+        };
+        var armorProficiency = new ArmorProficiency(armorValues);
+        var creature = new PlayerCharacter(50, stats, 5, armorProficiency);
+        creature.ResolveAttack(20, 20);
+        Assert.That(creature.GetHp(), Is.LessThan(50));
+    }
+    
+    [Test]
+    public void AttackFailsOnMiss()
+    {
+        var stats = new Stats(0, 0, 0, 0, 0, 0);
+        var armorValues = new Dictionary<ProficiencyTypes, ProficiencyValues>
+        {
+            { ProficiencyTypes.Unarmored, ProficiencyValues.Expert },
+            { ProficiencyTypes.LightArmor, ProficiencyValues.None },
+            { ProficiencyTypes.MediumArmor, ProficiencyValues.None },
+            { ProficiencyTypes.HeavyArmor, ProficiencyValues.None }
+        };
+        var armorProficiency = new ArmorProficiency(armorValues);
+        var creature = new PlayerCharacter(50, stats, 5, armorProficiency); 
+        creature.ResolveAttack(0, 50);
+        Assert.That(creature.GetHp(), Is.EqualTo(50));
+    }
+}

pflib-net.Tests/pflib-net.Tests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>net8.0</TargetFrameworks>
+    <RootNamespace>pflib_net.Tests</RootNamespace>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+    <PackageReference Include="NUnit" Version="4.1.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\pflib-net\pflib-net.csproj" />
+  </ItemGroup>
+  
+</Project>

pflib-net/characters/ICharacter.cs

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+namespace pflib_net.characters.internals.characters;
+
+public interface ICharacter
+{
+    /// <summary>
+    /// Resolve an attack against the character's AC and deal damage appropriately
+    /// </summary>
+    /// <param name="roll"></param>
+    /// <param name="damage"></param>
+    public void ResolveAttack(int roll, int damage);
+
+    /// <summary>
+    /// Return the HP of the character
+    /// </summary>
+    /// <returns></returns>
+    public int GetHp();
+}

pflib-net/characters/PlayerCharacter.cs

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+using pflib_net.characters.internals.characters.internals.proficiencies;
+
+namespace pflib_net.characters.internals.characters;
+
+public class PlayerCharacter(int hp, Stats stats, int level, ArmorProficiency armorProficiency)
+    : ICharacter
+{
+    private int Hp { get; set; } = hp;
+    private Stats Stats { get; set; } = stats;
+    private int Level { get; set; } = level;
+    private ArmorProficiency ArmorProficiency { get; set; } = armorProficiency;
+    private HashSet<ICondition> Conditions { get; set; } = [];
+    
+    public void ResolveAttack(int roll, int damage)
+    {
+        if (roll < GetAc()) return;
+        Hp -= damage;
+    }
+
+    private int GetAc()
+    {
+        return 10 + Stats.GetDexterity() + ArmorProficiency.GetValue(ProficiencyTypes.Unarmored, Level);
+    }
+
+    public int GetHp()
+    {
+        return Hp;
+    }
+}

pflib-net/characters/internals/Stats.cs

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+namespace pflib_net.characters.internals;
+
+public class Stats
+{
+    private int Strength { get; set; }
+
+    private int Dexterity { get; set; }
+
+    private int Constitution { get; set; }
+
+    private int Intelligence { get; set; }
+    private int Wisdom { get; set; }
+    private int Charisma { get; set; }
+    
+    public Stats(int strength, int dexterity, int constitution, int intelligence, int wisdom, int charisma)
+    {
+        Strength = strength;
+        Dexterity = dexterity;
+        Constitution = constitution;
+        Intelligence = intelligence;
+        Wisdom = wisdom;
+        Charisma = charisma;
+    }
+
+    public int GetStrength()
+    {
+        return Strength;
+    }
+
+    public int GetDexterity()
+    {
+        return Dexterity;
+    }
+}

pflib-net/characters/internals/proficiencies/ArmorProficiency.cs

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+namespace pflib_net.characters.internals.characters.internals.proficiencies;
+
+public class ArmorProficiency(Dictionary<ProficiencyTypes, ProficiencyValues> values) : IProficiency
+{
+    private Dictionary<ProficiencyTypes, ProficiencyValues> Values { get; set; } = values;
+
+    public int GetValue(ProficiencyTypes type, int level)
+    {
+        if (Values[type].Equals(ProficiencyValues.None))
+        {
+            return 0;
+        }
+        else
+        {
+            return level + (int) Values[type];
+        }
+    }
+}

pflib-net/characters/internals/proficiencies/IProficiency.cs

@@ -0,0 +1,6 @@
+namespace pflib_net.characters.internals.characters.internals.proficiencies;
+
+public interface IProficiency
+{
+    public int GetValue(ProficiencyTypes type, int level);
+}

pflib-net/characters/internals/proficiencies/ProficiencyTypes.cs

@@ -0,0 +1,35 @@
+namespace pflib_net.characters.internals.characters.internals.proficiencies;
+
+public enum ProficiencyTypes
+{
+    Unarmored,
+    LightArmor,
+    MediumArmor,
+    HeavyArmor,
+    
+    Unarmed,
+    SimpleWeapon,
+    MartialWeapon,
+    AdvancedWeapon,
+    
+    SkillAcrobatics,
+    SkillArcana,
+    SkillAthletics,
+    SkillCrafting,
+    SkillDeception,
+    SkillDiplomacy,
+    SkillIntimidation,
+    SkillMedicine,
+    SkillNature,
+    SkillOccultism,
+    SkillPerformance,
+    SkillReligion,
+    SkillSociety,
+    SkillStealth,
+    SkillSurvival,
+    SkillThievery,
+    
+    LoreBardic,
+    LoreLoremaster,
+    LoreOther
+}

pflib-net/characters/internals/proficiencies/ProficiencyValues.cs

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+namespace pflib_net.characters.internals.characters.internals.proficiencies;
+
+public enum ProficiencyValues: ushort
+{
+    None = 0,
+    Trainer = 2,
+    Expert = 4,
+    Master = 6,
+    Legendary = 8
+}

pflib-net/conditions/ICondition.cs

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+namespace pflib_net.characters.internals;
+
+public interface ICondition
+{
+    
+}

pflib-net/pflib-net.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <RootNamespace>pflib_net</RootNamespace>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+</Project>