Code-Snippets.md

@@ -0,0 +1,13 @@
+```csharp
+  public static class Geometry {
+    public static bool PointInCone(
+    float visionRangeSq, float fovCos, Vector2 eyePos, Vector2 direction, Vector2 test) {
+      Vector2 delta = Vector2.Subtract(test, eyePos);
+      if (delta.LengthSquared() > visionRangeSq) {
+        return false;
+      }
+      float dot = Vector2.Dot(Vector2.Normalize(direction), Vector2.Normalize(delta));
+      return dot > fovCos;
+    }
+  }
+```