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code/Tool.cs

@@ -0,0 +1,124 @@
+using Sandbox;
+using Sandbox.Tools;
+
+[Library( "weapon_tool", Title = "Toolgun" )]
+partial class Tool : Carriable
+{
+	[ConVar.ClientData( "tool_current" )]
+	public static string UserToolCurrent { get; set; } = "tool_boxgun";
+
+	public override string ViewModelPath => "weapons/rust_pistol/v_rust_pistol.vmdl";
+
+	[Net, Predicted]
+	public BaseTool CurrentTool { get; set; }
+
+	public override void Spawn()
+	{
+		base.Spawn();
+
+		SetModel( "weapons/rust_pistol/rust_pistol.vmdl" );
+	}
+
+	public override void Simulate( Client owner )
+	{
+		UpdateCurrentTool( owner );
+
+		CurrentTool?.Simulate();
+	}
+
+	private void UpdateCurrentTool( Client owner )
+	{
+		var toolName = owner.GetUserString( "tool_current", "tool_boxgun" );
+		if ( toolName == null )
+			return;
+
+		// Already the right tool
+		if ( CurrentTool != null && CurrentTool.Parent == this && CurrentTool.Owner == owner.Pawn && CurrentTool.ClassInfo.IsNamed( toolName ) )
+			return;
+
+		if ( CurrentTool != null )
+		{
+			CurrentTool?.Deactivate();
+			CurrentTool = null;
+		}
+
+		CurrentTool = Library.Create<BaseTool>( toolName, false );
+
+		if ( CurrentTool != null )
+		{
+			CurrentTool.Parent = this;
+			CurrentTool.Owner = owner.Pawn as Player;
+			CurrentTool.Activate();
+		}
+	}
+
+	public override void ActiveStart( Entity ent )
+	{
+		base.ActiveStart( ent );
+
+		CurrentTool?.Activate();
+	}
+
+	public override void ActiveEnd( Entity ent, bool dropped )
+	{
+		base.ActiveEnd( ent, dropped );
+
+		CurrentTool?.Deactivate();
+	}
+
+	protected override void OnDestroy()
+	{
+		base.OnDestroy();
+
+		CurrentTool?.Deactivate();
+		CurrentTool = null;
+	}
+
+	public override void OnCarryDrop( Entity dropper )
+	{
+	}
+
+	[Event.Frame]
+	public void OnFrame()
+	{
+		if ( !IsActiveChild() ) return;
+
+		CurrentTool?.OnFrame();
+	}
+}
+
+namespace Sandbox.Tools
+{
+	public partial class BaseTool : NetworkComponent
+	{
+		public Tool Parent { get; set; }
+		public Player Owner { get; set; }
+
+		protected virtual float MaxTraceDistance => 10000.0f;
+
+		public virtual void Activate()
+		{
+			CreatePreviews();
+		}
+
+		public virtual void Deactivate()
+		{
+			DeletePreviews();
+		}
+
+		public virtual void Simulate()
+		{
+
+		}
+
+		public virtual void OnFrame()
+		{
+			UpdatePreviews();
+		}
+
+		public virtual void CreateHitEffects( Vector3 pos )
+		{
+			Parent?.CreateHitEffects( pos );
+		}
+	}
+}