mirror of
https://github.com/Facepunch/sbox-public.git
synced 2026-01-29 00:31:05 -05:00
71f266059a
This commit imports the C# engine code and game files, excluding C++ source code. [Source-Commit: ceb3d758046e50faa6258bc3b658a30c97743268]
117 lines
2.8 KiB
C#
117 lines
2.8 KiB
C#
namespace Sandbox;
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/// <summary>
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/// Renders a trail behind the object, when it moves.
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/// </summary>
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[Expose]
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[Title( "Trail Renderer" )]
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[Category( "Rendering" )]
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[Icon( "show_chart" )]
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public sealed class TrailRenderer : Renderer, Component.ExecuteInEditor
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{
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SceneTrailObject _so;
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[Group( "Trail" )]
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[Property] public int MaxPoints { get; set; } = 64;
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[Group( "Trail" )]
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[Property] public float PointDistance { get; set; } = 8;
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[Group( "Trail" )]
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[Property] public float LifeTime { get; set; } = 2;
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/// <summary>
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/// When enabled, new points are added to the trail.
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/// </summary>
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[Group( "Trail" )]
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[Property] public bool Emitting { get; set; } = true;
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[Group( "Appearance" )]
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[Property, InlineEditor( Label = false )] public TrailTextureConfig Texturing { get; set; } = TrailTextureConfig.Default;
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[Group( "Appearance" )]
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[Property] public Gradient Color { get; set; } = global::Color.Cyan;
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[Group( "Appearance" )]
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[Property] public Curve Width { get; set; } = 5;
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[Group( "Appearance" )]
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[Property] public SceneLineObject.FaceMode Face { get; set; }
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[Group( "Rendering" )]
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[Property] public bool Wireframe { get; set; }
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[Group( "Rendering" )]
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[Property] public bool Opaque { get; set; } = true;
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[ShowIf( "Opaque", true )]
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[Group( "Rendering" )]
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[Property] public bool CastShadows { get; set; } = false;
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[ShowIf( "Opaque", false )]
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[Group( "Rendering" )]
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[Property] public BlendMode BlendMode { get; set; } = BlendMode.Normal;
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private Material _defaultMaterial;
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protected override void OnEnabled()
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{
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_defaultMaterial = Material.Load( "materials/default/default_line.vmat" ).CreateCopy();
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_so = new SceneTrailObject( Scene.SceneWorld );
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_so.Transform = WorldTransform;
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OnSceneObjectCreated( _so );
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}
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protected override void OnDisabled()
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{
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BackupRenderAttributes( _so?.Attributes );
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_so?.Delete();
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_so = null;
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}
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protected override void OnUpdate()
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{
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base.OnUpdate();
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if ( !_so.IsValid() )
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return;
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_so.Transform = new Transform( WorldPosition );
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_so.LifeTime = LifeTime;
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_so.Texturing = Texturing;
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if ( !Texturing.Material.IsValid() )
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{
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#pragma warning disable CS0618
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if ( Texturing.Texture.IsValid() )
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{
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_defaultMaterial.Set( "g_tColor", Texturing.Texture );
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#pragma warning restore CS0618
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}
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else
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{
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_defaultMaterial.Set( "g_tColor", Texture.White );
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}
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_so.Texturing = _so.Texturing with { Material = _defaultMaterial };
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}
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_so.MaxPoints = MaxPoints;
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_so.PointDistance = PointDistance;
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_so.TrailColor = Color;
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_so.Width = Width;
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_so.Flags.CastShadows = Opaque && CastShadows;
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_so.Wireframe = Wireframe;
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_so.Opaque = Opaque;
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_so.BlendMode = BlendMode;
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_so.Face = Face;
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if ( Emitting )
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{
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_so.TryAddPosition( WorldPosition, WorldRotation.Up );
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}
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_so.AdvanceTime( Time.Delta );
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_so.Build();
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RenderOptions.Apply( _so );
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}
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}
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