323 lines
13 KiB
C#
323 lines
13 KiB
C#
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using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Graphics;
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using Microsoft.Xna.Framework.Input;
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using Myra.Graphics2D;
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using Myra.Graphics2D.Brushes;
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using Myra.Graphics2D.UI;
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using Theriapolis.Core;
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using Theriapolis.Core.Rules.Character;
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using Theriapolis.Core.Rules.Stats;
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namespace Theriapolis.Game.Screens;
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/// <summary>
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/// Phase 6.5 M0 — the level-up modal. Pushed by <see cref="PauseMenuScreen"/>
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/// when the player clicks "Level Up" while
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/// <see cref="LevelUpFlow.CanLevelUp"/> returns true.
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///
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/// Shows the rolled (or averaged) HP gain, the feature unlocks for this
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/// level, and — when applicable — the ASI picker and subclass picker. On
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/// confirm, applies the deltas to the player's <see cref="Character"/>
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/// via <see cref="Character.ApplyLevelUp"/> and pops; if the player still
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/// has enough XP for another level, the screen offers to re-open.
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/// </summary>
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public sealed class LevelUpScreen : IScreen
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{
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private readonly Character _character;
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private readonly ulong _baseSeed;
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private readonly IReadOnlyDictionary<string, Theriapolis.Core.Data.SubclassDef>? _subclasses;
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private Game1 _game = null!;
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private Desktop _desktop = null!;
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private LevelUpResult _preview = null!;
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private LevelUpChoices _choices = null!;
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private Label? _statusLabel;
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private bool _escWasDown = true;
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public LevelUpScreen(
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Character character,
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ulong baseSeed,
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IReadOnlyDictionary<string, Theriapolis.Core.Data.SubclassDef>? subclasses = null)
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{
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_character = character ?? throw new ArgumentNullException(nameof(character));
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_baseSeed = baseSeed;
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_subclasses = subclasses;
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}
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public void Initialize(Game1 game)
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{
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_game = game;
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RecomputePreview(takeAverage: true);
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Build();
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}
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private void RecomputePreview(bool takeAverage)
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{
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int targetLevel = _character.Level + 1;
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ulong seed = _baseSeed
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^ C.RNG_LEVELUP
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^ (ulong)targetLevel
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// Mix in level-up history length so each successive level-up
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// (when the player chains multiple at once) gets a distinct
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// sub-seed even when targetLevel is reused after re-entry.
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^ ((ulong)_character.LevelUpHistory.Count << 16);
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_preview = LevelUpFlow.Compute(_character, targetLevel, seed,
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takeAverage: takeAverage,
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subclasses: _subclasses);
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_choices = new LevelUpChoices { TakeAverageHp = takeAverage };
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}
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private void Build()
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{
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var root = new VerticalStackPanel
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{
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Spacing = 8,
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HorizontalAlignment = HorizontalAlignment.Center,
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VerticalAlignment = VerticalAlignment.Center,
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Background = new SolidBrush(new Color(0, 0, 0, 220)),
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Padding = new Thickness(40, 24, 40, 24),
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};
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root.Widgets.Add(new Label
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{
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Text = $"LEVEL UP — Level {_character.Level} → {_preview.NewLevel}",
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HorizontalAlignment = HorizontalAlignment.Center,
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});
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root.Widgets.Add(new Label { Text = " " });
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// HP section.
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string hpLine = _preview.HpWasAveraged
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? $"HP: +{_preview.HpGained} (took average; rolled would be 1d{_character.ClassDef.HitDie})"
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: $"HP: +{_preview.HpGained} (rolled {_preview.HpHitDieResult} on 1d{_character.ClassDef.HitDie})";
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root.Widgets.Add(new Label { Text = hpLine, HorizontalAlignment = HorizontalAlignment.Center });
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var hpToggle = new TextButton
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{
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Text = _preview.HpWasAveraged ? "Switch to: Roll HP" : "Switch to: Take average HP",
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Width = 280,
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HorizontalAlignment = HorizontalAlignment.Center,
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};
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hpToggle.Click += (_, _) =>
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{
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RecomputePreview(takeAverage: !_preview.HpWasAveraged);
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Build();
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};
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root.Widgets.Add(hpToggle);
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// Class features.
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if (_preview.ClassFeaturesUnlocked.Length > 0)
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{
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root.Widgets.Add(new Label { Text = " " });
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root.Widgets.Add(new Label { Text = "Features unlocked:", HorizontalAlignment = HorizontalAlignment.Center });
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foreach (var fid in _preview.ClassFeaturesUnlocked)
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{
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string display = fid;
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if (_character.ClassDef.FeatureDefinitions.TryGetValue(fid, out var def))
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display = string.IsNullOrEmpty(def.Name) ? fid : $"{def.Name} — {def.Kind}";
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root.Widgets.Add(new Label { Text = " • " + display, HorizontalAlignment = HorizontalAlignment.Center });
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}
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}
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// Phase 6.5 M2 — subclass features (post-L3, when SubclassId is set).
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if (_preview.SubclassFeaturesUnlocked.Length > 0 && _subclasses is not null)
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{
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var subclass = Theriapolis.Core.Rules.Character.SubclassResolver.TryFindSubclass(
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_subclasses, _character.SubclassId);
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string subclassName = subclass?.Name ?? _character.SubclassId;
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root.Widgets.Add(new Label { Text = " " });
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root.Widgets.Add(new Label
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{
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Text = $"{subclassName} features:",
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HorizontalAlignment = HorizontalAlignment.Center,
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TextColor = new Color(220, 200, 140),
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});
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foreach (var fid in _preview.SubclassFeaturesUnlocked)
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{
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string display = fid;
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var fdef = Theriapolis.Core.Rules.Character.SubclassResolver.ResolveFeatureDef(
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_character.ClassDef, subclass, fid);
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if (fdef is not null)
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display = string.IsNullOrEmpty(fdef.Name) ? fid : $"{fdef.Name} — {fdef.Kind}";
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root.Widgets.Add(new Label { Text = " • " + display, HorizontalAlignment = HorizontalAlignment.Center });
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}
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}
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root.Widgets.Add(new Label { Text = " " });
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root.Widgets.Add(new Label
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{
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Text = $"Proficiency bonus: +{_preview.NewProficiencyBonus}",
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HorizontalAlignment = HorizontalAlignment.Center,
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});
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// Subclass picker.
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if (_preview.GrantsSubclassChoice)
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{
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root.Widgets.Add(new Label { Text = " " });
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root.Widgets.Add(new Label { Text = "Choose a subclass:", HorizontalAlignment = HorizontalAlignment.Center });
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foreach (var sid in _character.ClassDef.SubclassIds)
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{
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string sCapture = sid;
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string label = sid;
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string? flavor = null;
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if (_subclasses is not null
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&& _subclasses.TryGetValue(sid, out var subDef))
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{
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label = subDef.Name;
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flavor = subDef.Flavor;
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}
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var btn = new TextButton
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{
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Text = $" {label}{(_choices.SubclassId == sCapture ? " ✓" : "")}",
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Width = 360,
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HorizontalAlignment = HorizontalAlignment.Center,
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};
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btn.Click += (_, _) =>
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{
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_choices.SubclassId = sCapture;
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Build();
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};
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root.Widgets.Add(btn);
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if (_choices.SubclassId == sCapture && !string.IsNullOrEmpty(flavor))
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{
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root.Widgets.Add(new Label
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{
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Text = " " + flavor,
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Wrap = true,
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Width = 600,
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HorizontalAlignment = HorizontalAlignment.Center,
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TextColor = new Color(170, 170, 170),
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});
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}
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}
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}
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// ASI picker.
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if (_preview.GrantsAsiChoice)
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{
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root.Widgets.Add(new Label { Text = " " });
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root.Widgets.Add(new Label { Text = "Ability Score Improvement (+2 to one or +1 to two):", HorizontalAlignment = HorizontalAlignment.Center });
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int allocated = _choices.AsiAdjustments.Values.Sum();
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root.Widgets.Add(new Label
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{
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Text = $"Allocated: +{allocated} / +2",
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HorizontalAlignment = HorizontalAlignment.Center,
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});
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foreach (AbilityId aid in Enum.GetValues<AbilityId>())
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{
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var aidCapture = aid;
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int current = _character.Abilities.Get(aid);
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int delta = _choices.AsiAdjustments.TryGetValue(aid, out var d) ? d : 0;
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var row = new HorizontalStackPanel
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{
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Spacing = 4,
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HorizontalAlignment = HorizontalAlignment.Center,
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};
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row.Widgets.Add(new Label { Text = $" {aid}: {current}{(delta > 0 ? $" → {current + delta}" : "")} ", VerticalAlignment = VerticalAlignment.Center });
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var minus = new TextButton { Text = "−", Width = 30 };
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minus.Click += (_, _) =>
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{
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if (_choices.AsiAdjustments.TryGetValue(aidCapture, out var v) && v > 0)
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{
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if (v == 1) _choices.AsiAdjustments.Remove(aidCapture);
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else _choices.AsiAdjustments[aidCapture] = v - 1;
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Build();
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}
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};
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var plus = new TextButton { Text = "+", Width = 30 };
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plus.Click += (_, _) =>
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{
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int totalAllocated = _choices.AsiAdjustments.Values.Sum();
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if (totalAllocated >= 2) return; // cap at +2
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int currentDelta = _choices.AsiAdjustments.TryGetValue(aidCapture, out var v) ? v : 0;
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if (currentDelta >= 2) return;
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int currentScore = _character.Abilities.Get(aidCapture);
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if (currentScore + currentDelta + 1 > C.ABILITY_SCORE_CAP_PRE_L20) return;
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_choices.AsiAdjustments[aidCapture] = currentDelta + 1;
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Build();
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};
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row.Widgets.Add(minus);
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row.Widgets.Add(plus);
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root.Widgets.Add(row);
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}
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}
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root.Widgets.Add(new Label { Text = " " });
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// Confirm button.
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bool valid = ChoicesValid(out string reason);
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var confirm = new TextButton
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{
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Text = valid ? "Confirm" : $"Confirm — {reason}",
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Width = 280,
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HorizontalAlignment = HorizontalAlignment.Center,
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Enabled = valid,
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};
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confirm.Click += (_, _) =>
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{
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if (!ChoicesValid(out _)) return;
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_character.ApplyLevelUp(_preview, _choices);
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// Chain into the next level-up immediately if eligible.
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if (LevelUpFlow.CanLevelUp(_character))
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{
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RecomputePreview(takeAverage: true);
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Build();
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ShowStatus($"Now level {_character.Level}. Another level available!");
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}
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else
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{
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_game.Screens.Pop();
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}
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};
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root.Widgets.Add(confirm);
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var cancel = new TextButton { Text = "Cancel", Width = 280, HorizontalAlignment = HorizontalAlignment.Center };
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cancel.Click += (_, _) => _game.Screens.Pop();
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root.Widgets.Add(cancel);
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_statusLabel = new Label { Text = " ", HorizontalAlignment = HorizontalAlignment.Center };
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root.Widgets.Add(_statusLabel);
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_desktop = new Desktop { Root = root };
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}
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private bool ChoicesValid(out string reason)
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{
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if (_preview.GrantsSubclassChoice && string.IsNullOrEmpty(_choices.SubclassId))
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{
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reason = "pick a subclass";
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return false;
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}
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if (_preview.GrantsAsiChoice)
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{
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int total = _choices.AsiAdjustments.Values.Sum();
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if (total != 2)
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{
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reason = $"allocate +{2 - total} more ASI";
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return false;
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}
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}
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reason = "";
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return true;
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}
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private void ShowStatus(string text)
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{
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if (_statusLabel is not null) _statusLabel.Text = text;
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}
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public void Update(GameTime gt)
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{
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bool down = Keyboard.GetState().IsKeyDown(Keys.Escape);
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bool justPressed = down && !_escWasDown;
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_escWasDown = down;
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if (justPressed) _game.Screens.Pop();
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}
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public void Draw(GameTime gt, SpriteBatch sb)
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{
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_desktop.Render();
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}
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public void Deactivate() { }
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public void Reactivate() { Build(); }
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}
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