Battle formulas: action values as stat formulas, costs from stat pools, MP gauge for party members, action schema

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/BattleFormulaScopeTests.cs

@@ -0,0 +1,33 @@
+namespace Cthangover.Mods.BattleFormulas.Tests
+{
+    using Cthangover.Core.Characters;
+    using Cthangover.Core.Mods.Testing;
+
+    /// <summary>a.* reads the one acting, b.* the target; live attributes under fixed names; other prefixes are unknown.</summary>
+    public class BattleFormulaScopeTests
+    {
+        [ModTest("scope/sides_and_live_names")]
+        static void SidesAndLiveNames(ModTestContext ctx)
+        {
+            var a = new Character { ID = "test_a_no_stats", Level = 4 };
+            a.Attributes.Health.Init(40);
+            a.Attributes.Health.Value = 25;
+            a.Attributes.Attack.Init(7);
+            var b = new Character { ID = "test_b_no_stats", Level = 2 };
+            b.Attributes.Defence.Init(3);
+            b.Attributes.Point.Init(2);
+
+            var scope = new BattleFormulaScope(a, b);
+
+            ModAssert.True(scope.TryGet("a.hp", out var hp) && hp == 25, "a.hp is the current health");
+            ModAssert.True(scope.TryGet("a.hp_max", out var max) && max == 40, "a.hp_max");
+            ModAssert.True(scope.TryGet("a.attack", out var atk) && atk == 7, "a.attack");
+            ModAssert.True(scope.TryGet("a.level", out var level) && level == 4, "a.level from the battle character");
+            ModAssert.True(scope.TryGet("b.defence", out var def) && def == 3, "b.defence");
+            ModAssert.True(scope.TryGet("b.point", out var points) && points == 2, "b.point");
+            ModAssert.False(scope.TryGet("c.hp", out _), "unknown side");
+            ModAssert.False(scope.TryGet("hp", out _), "no side");
+            ModAssert.False(scope.TryGet("b.no_such_stat", out _), "a stat nobody has");
+        }
+    }
+}