Update README.md to include project description, developer documentation links, and license information.

2026-06-11 04:03:07 +03:00
parent 31aba3aeee
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+using Friflo.Engine.ECS;
+using Microsoft.Xna.Framework;
+using MrGameEng.Assets;
+using MrGameEng.Core;
+using MrGameEng.Graphics;
+using MrGameEng.Input;
+
+namespace MrGameEng.Sample.Scenes;
+
+/// <summary>
+/// Стресс-сцена: 100 000 спрайтов скачут в мире 4000×4000. Колесо — зум (чем дальше,
+/// тем больше спрайтов в кадре), Tab — обратно в основную сцену. Цель: 60 FPS.
+/// </summary>
+public sealed class StressScene : Scene
+{
+    private const int SpriteCount = 100_000;
+    private static readonly RectF WorldBounds = new(-2000f, -2000f, 4000f, 4000f);
+
+    protected override void OnLoad()
+    {
+        var assets = Context.Services.Get<AssetManager>();
+        var input = this.UseInput();
+        var actions = SampleInput.CreateActions(input);
+
+        var renderer = this.UseRenderer2D();
+        SampleLayers.EnsureRegistered(renderer);
+
+        var shapesTexture = assets.Load(GameAssets.Textures.Shapes);
+        var regions = new[]
+        {
+            new Texture2DRegion(shapesTexture, new Rectangle(0, 0, 32, 32)),
+            new Texture2DRegion(shapesTexture, new Rectangle(32, 0, 32, 32)),
+            new Texture2DRegion(shapesTexture, new Rectangle(0, 32, 32, 32)),
+            new Texture2DRegion(shapesTexture, new Rectangle(32, 32, 32, 32)),
+        };
+
+        var random = new Random(7);
+        for (var i = 0; i < SpriteCount; i++)
+        {
+            var sprite = new Sprite(regions[random.Next(regions.Length)]);
+            sprite.CenterOrigin();
+            var angle = random.NextSingle() * MathF.Tau;
+            Store.CreateEntity(
+                new Transform2D(
+                    new Vector2(
+                        random.NextSingle() * WorldBounds.Width + WorldBounds.Left,
+                        random.NextSingle() * WorldBounds.Height + WorldBounds.Top),
+                    scale: new Vector2(0.4f + random.NextSingle() * 0.6f)),
+                sprite,
+                new Velocity { Value = new Vector2(MathF.Cos(angle), MathF.Sin(angle)) * (30f + random.Next(150)) });
+        }
+
+        var camera = Store.CreateEntity(new Camera(Vector2.Zero, zoom: 0.3f));
+
+        UpdateSystems.Add(new BounceSystem(WorldBounds));
+        UpdateSystems.Add(new StressCameraSystem(camera, input));
+        UpdateSystems.Add(new SceneHotkeysSystem(Context, actions, () => new MainScene()));
+        UpdateSystems.Add(new TitleStatsSystem(Context, renderer, $"Stress {SpriteCount:N0}"));
+    }
+
+    /// <summary>Только зум колесом — чтобы регулировать число видимых спрайтов.</summary>
+    private sealed class StressCameraSystem(Entity cameraEntity, InputManager input)
+        : Friflo.Engine.ECS.Systems.BaseSystem
+    {
+        protected override void OnUpdateGroup()
+        {
+            ref var camera = ref cameraEntity.GetComponent<Camera>();
+            camera.Zoom = Math.Clamp(camera.Zoom * (1f + input.WheelDelta * 0.001f), 0.05f, 5f);
+        }
+    }
+}