Remove obsolete project files for MrGameEng.AI, MrGameEng.Assets, MrGameEng.Atlases, and MrGameEng.Collisions modules. Introduce new AssetManager and related classes for asset loading and management, including support for texture atlases and mod definitions. Enhance mod loading capabilities with DefDatabase and LanguageManager for JSON-based definitions and localization. Implement a shelf packing algorithm for efficient texture atlas creation.

2026-06-12 07:47:04 +03:00
parent 1f87fb0b74
commit c30e2ce764
70 changed files with 0 additions and 233 deletions
@@ -0,0 +1,75 @@
+using MrGameEng.AI;
+using Xunit;
+
+namespace MrGameEng.AI.Tests;
+
+public class ResponseCurveTests
+{
+    [Fact]
+    public void Identity_ReturnsInputUnchanged()
+    {
+        var curve = ResponseCurve.Identity;
+
+        Assert.Equal(0f, curve.Evaluate(0f));
+        Assert.Equal(0.5f, curve.Evaluate(0.5f), 5);
+        Assert.Equal(1f, curve.Evaluate(1f));
+    }
+
+    [Fact]
+    public void Default_HasZeroSlope_SoIdentityMustBeUsedExplicitly()
+    {
+        // Guards the gotcha that default(ResponseCurve) is NOT the identity curve.
+        var zero = default(ResponseCurve);
+
+        Assert.Equal(0f, zero.Evaluate(0.5f));
+    }
+
+    [Fact]
+    public void Evaluate_ClampsInputAndOutputToUnitRange()
+    {
+        var curve = ResponseCurve.Linear();
+
+        Assert.Equal(0f, curve.Evaluate(-2f));
+        Assert.Equal(1f, curve.Evaluate(5f));
+    }
+
+    [Fact]
+    public void Linear_NegativeSlope_InvertsTheInput()
+    {
+        var curve = ResponseCurve.Linear(slope: -1f, yShift: 1f);
+
+        Assert.Equal(1f, curve.Evaluate(0f), 5);
+        Assert.Equal(0.75f, curve.Evaluate(0.25f), 5);
+        Assert.Equal(0f, curve.Evaluate(1f), 5);
+    }
+
+    [Fact]
+    public void Polynomial_Quadratic_EasesInFromZero()
+    {
+        var curve = ResponseCurve.Polynomial(exponent: 2f);
+
+        Assert.Equal(0.25f, curve.Evaluate(0.5f), 5);
+        Assert.True(curve.Evaluate(0.25f) < 0.25f); // below the linear line: slow start
+    }
+
+    [Fact]
+    public void Logistic_IsMonotonicAndCentredOnMidpoint()
+    {
+        var curve = ResponseCurve.Logistic(steepness: 12f, midpoint: 0.5f);
+
+        Assert.Equal(0.5f, curve.Evaluate(0.5f), 2);
+        Assert.True(curve.Evaluate(0.2f) < 0.5f);
+        Assert.True(curve.Evaluate(0.8f) > 0.5f);
+        Assert.True(curve.Evaluate(0.6f) > curve.Evaluate(0.4f));
+    }
+
+    [Fact]
+    public void SmoothStep_IsFlatAtTheEnds()
+    {
+        var curve = ResponseCurve.SmoothStep();
+
+        Assert.Equal(0f, curve.Evaluate(0f), 5);
+        Assert.Equal(1f, curve.Evaluate(1f), 5);
+        Assert.Equal(0.5f, curve.Evaluate(0.5f), 5);
+    }
+}