Leonid PershinandClaude Fable 5
2b7d4c4fef
Switch(scene, transition) covers the old scene, swaps at full coverage (hiding slow OnLoad), then reveals the new one. Built-in Fade and Wipe transitions draw through TransitionRenderer (BasicEffect quad, no SpriteBatch); custom transitions subclass Transition. Runs on unscaled time so it works while gameplay is paused; Switch during a transition replaces the pending target. Sample: Tab now fades into the stress scene and wipes back. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
72 lines
3.0 KiB
C#
72 lines
3.0 KiB
C#
using Friflo.Engine.ECS;
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using Microsoft.Xna.Framework;
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using MrGameEng.Assets;
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using MrGameEng.Core;
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using MrGameEng.Graphics;
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using MrGameEng.Input;
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namespace MrGameEng.Sample.Scenes;
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/// <summary>
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/// Стресс-сцена: 100 000 спрайтов скачут в мире 4000×4000. Колесо — зум (чем дальше,
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/// тем больше спрайтов в кадре), Tab — обратно в основную сцену. Цель: 60 FPS.
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/// </summary>
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public sealed class StressScene : Scene
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{
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private const int SpriteCount = 100_000;
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private static readonly RectF WorldBounds = new(-2000f, -2000f, 4000f, 4000f);
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protected override void OnLoad()
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{
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var assets = Context.Services.Get<AssetManager>();
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var input = this.UseInput();
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var actions = SampleInput.CreateActions(input);
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var renderer = this.UseRenderer2D();
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SampleLayers.EnsureRegistered(renderer);
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var shapesTexture = assets.Load(GameAssets.Textures.Shapes);
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var regions = new[]
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{
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new Texture2DRegion(shapesTexture, new Rectangle(0, 0, 32, 32)),
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new Texture2DRegion(shapesTexture, new Rectangle(32, 0, 32, 32)),
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new Texture2DRegion(shapesTexture, new Rectangle(0, 32, 32, 32)),
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new Texture2DRegion(shapesTexture, new Rectangle(32, 32, 32, 32)),
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};
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var random = new Random(7);
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for (var i = 0; i < SpriteCount; i++)
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{
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var sprite = new Sprite(regions[random.Next(regions.Length)]);
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sprite.CenterOrigin();
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var angle = random.NextSingle() * MathF.Tau;
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Store.CreateEntity(
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new Transform2D(
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new Vector2(
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random.NextSingle() * WorldBounds.Width + WorldBounds.Left,
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random.NextSingle() * WorldBounds.Height + WorldBounds.Top),
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scale: new Vector2(0.4f + random.NextSingle() * 0.6f)),
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sprite,
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new Velocity { Value = new Vector2(MathF.Cos(angle), MathF.Sin(angle)) * (30f + random.Next(150)) });
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}
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var camera = Store.CreateEntity(new Camera(Vector2.Zero, zoom: 0.3f));
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UpdateSystems.Add(new BounceSystem(WorldBounds));
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UpdateSystems.Add(new StressCameraSystem(camera, input));
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UpdateSystems.Add(new SceneHotkeysSystem(Context, actions, () => new MainScene(), Transition.Wipe(0.8f, Color.DarkSlateBlue)));
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UpdateSystems.Add(new TitleStatsSystem(Context, renderer, $"Stress {SpriteCount:N0}"));
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}
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/// <summary>Только зум колесом — чтобы регулировать число видимых спрайтов.</summary>
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private sealed class StressCameraSystem(Entity cameraEntity, InputManager input)
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: Friflo.Engine.ECS.Systems.BaseSystem
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{
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protected override void OnUpdateGroup()
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{
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ref var camera = ref cameraEntity.GetComponent<Camera>();
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camera.Zoom = Math.Clamp(camera.Zoom * (1f + input.WheelDelta * 0.001f), 0.05f, 5f);
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}
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}
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}
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