Add files via upload

code/tools/Lamp.cs

@@ -0,0 +1,83 @@
+namespace Sandbox.Tools
+{
+	[Library( "tool_lamp", Title = "Lamps", Description = "Directional light source that casts shadows", Group = "construction" )]
+	public partial class LampTool : BaseTool
+	{
+		PreviewEntity previewModel;
+
+		private string Model => "models/torch/torch.vmdl";
+
+		protected override bool IsPreviewTraceValid( TraceResult tr )
+		{
+			if ( !base.IsPreviewTraceValid( tr ) )
+				return false;
+
+			if ( tr.Entity is LampEntity )
+				return false;
+
+			return true;
+		}
+
+		public override void CreatePreviews()
+		{
+			if ( TryCreatePreview( ref previewModel, Model ) )
+			{
+				previewModel.RelativeToNormal = false;
+				previewModel.OffsetBounds = true;
+				previewModel.PositionOffset = -previewModel.CollisionBounds.Center;
+			}
+		}
+
+		public override void Simulate()
+		{
+			if ( !Host.IsServer )
+				return;
+
+			using ( Prediction.Off() )
+			{
+				if ( !Input.Pressed( InputButton.Attack1 ) )
+					return;
+
+				var startPos = Owner.EyePos;
+				var dir = Owner.EyeRot.Forward;
+
+				var tr = Trace.Ray( startPos, startPos + dir * MaxTraceDistance )
+					.Ignore( Owner )
+					.Run();
+
+				if ( !tr.Hit || !tr.Entity.IsValid() )
+					return;
+
+				CreateHitEffects( tr.EndPos );
+
+				if ( tr.Entity is LampEntity lamp )
+				{
+					// TODO: Set properties
+
+					lamp.Flicker = !lamp.Flicker;
+
+					return;
+				}
+
+				lamp = new LampEntity
+				{
+					Enabled = true,
+					DynamicShadows = true,
+					Range = 512,
+					Falloff = 1.0f,
+					LinearAttenuation = 0.0f,
+					QuadraticAttenuation = 1.0f,
+					InnerConeAngle = 25,
+					OuterConeAngle = 45,
+					Brightness = 10,
+					Color = Color.Random,
+					Rotation = Rotation.Identity
+				};
+
+				lamp.SetModel( Model );
+				lamp.SetupPhysicsFromModel( PhysicsMotionType.Dynamic, false );
+				lamp.Position = tr.EndPos + -lamp.CollisionBounds.Center + tr.Normal * lamp.CollisionBounds.Size * 0.5f;
+			}
+		}
+	}
+}