119 lines
4.0 KiB
C#
119 lines
4.0 KiB
C#
using System.Numerics;
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using Content.Shared.Explosion;
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using JetBrains.Annotations;
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using Robust.Client.Graphics;
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using Robust.Shared.Enums;
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using Robust.Shared.Map;
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using Robust.Shared.Prototypes;
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using Robust.Shared.Random;
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namespace Content.Client.Explosion;
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[UsedImplicitly]
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public sealed class ExplosionOverlay : Overlay
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{
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[Dependency] private readonly IRobustRandom _robustRandom = default!;
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[Dependency] private readonly IMapManager _mapManager = default!;
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[Dependency] private readonly IEntityManager _entMan = default!;
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[Dependency] private readonly IPrototypeManager _proto = default!;
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private readonly SharedTransformSystem _transform;
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public override OverlaySpace Space => OverlaySpace.WorldSpaceBelowFOV;
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private ShaderInstance _shader;
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public ExplosionOverlay()
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{
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IoCManager.InjectDependencies(this);
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_shader = _proto.Index<ShaderPrototype>("unshaded").Instance();
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_transform = _entMan.System<SharedTransformSystem>();
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}
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protected override void Draw(in OverlayDrawArgs args)
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{
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var drawHandle = args.WorldHandle;
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drawHandle.UseShader(_shader);
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var xforms = _entMan.GetEntityQuery<TransformComponent>();
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var query = _entMan
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.EntityQuery<ExplosionVisualsComponent, ExplosionVisualsTexturesComponent, AppearanceComponent>(true);
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foreach (var (visuals, textures, appearance) in query)
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{
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if (visuals.Epicenter.MapId != args.MapId)
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continue;
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if (!appearance.TryGetData(ExplosionAppearanceData.Progress, out int index))
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continue;
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index = Math.Min(index, visuals.Intensity.Count - 1);
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DrawExplosion(drawHandle, args.WorldBounds, visuals, index, xforms, textures);
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}
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drawHandle.SetTransform(Matrix3.Identity);
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drawHandle.UseShader(null);
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}
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private void DrawExplosion(
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DrawingHandleWorld drawHandle,
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Box2Rotated worldBounds,
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ExplosionVisualsComponent visuals,
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int index,
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EntityQuery<TransformComponent> xforms,
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ExplosionVisualsTexturesComponent textures)
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{
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Box2 gridBounds;
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foreach (var (gridId, tiles) in visuals.Tiles)
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{
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if (!_mapManager.TryGetGrid(gridId, out var grid))
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continue;
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var xform = xforms.GetComponent(grid.Owner);
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var (_, _, worldMatrix, invWorldMatrix) = _transform.GetWorldPositionRotationMatrixWithInv(xform, xforms);
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gridBounds = invWorldMatrix.TransformBox(worldBounds).Enlarged(grid.TileSize * 2);
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drawHandle.SetTransform(worldMatrix);
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DrawTiles(drawHandle, gridBounds, index, tiles, visuals, grid.TileSize, textures);
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}
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if (visuals.SpaceTiles == null)
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return;
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gridBounds = Matrix3.Invert(visuals.SpaceMatrix).TransformBox(worldBounds).Enlarged(2);
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drawHandle.SetTransform(visuals.SpaceMatrix);
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DrawTiles(drawHandle, gridBounds, index, visuals.SpaceTiles, visuals, visuals.SpaceTileSize, textures);
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}
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private void DrawTiles(
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DrawingHandleWorld drawHandle,
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Box2 gridBounds,
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int index,
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Dictionary<int, List<Vector2i>> tileSets,
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ExplosionVisualsComponent visuals,
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ushort tileSize,
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ExplosionVisualsTexturesComponent textures)
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{
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for (var j = 0; j <= index; j++)
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{
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if (!tileSets.TryGetValue(j, out var tiles))
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continue;
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var frameIndex = (int) Math.Min(visuals.Intensity[j] / textures.IntensityPerState, textures.FireFrames.Count - 1);
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var frames = textures.FireFrames[frameIndex];
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foreach (var tile in tiles)
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{
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var centre = (tile + Vector2Helpers.Half) * tileSize;
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if (!gridBounds.Contains(centre))
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continue;
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var texture = _robustRandom.Pick(frames);
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drawHandle.DrawTextureRect(texture, Box2.CenteredAround(centre, new Vector2(tileSize, tileSize)), textures.FireColor);
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}
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}
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}
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}
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