connections

Nodule.cs

@@ -0,0 +1,139 @@
+using System;
+using System.Collections.Generic;
+using Godot;
+using NodeWar.scripts;
+
+namespace NodeWar;
+
+public partial class Nodule : Area2D
+{
+	private const float GrowthFactor = 0.01f;
+
+	[Export]
+	public float Radius { get; set; } = 120;
+
+	[Export]
+	public float MaxRadius { get; set; } = 360;
+
+	[Export]
+	public CollisionShape2D Collision { get; set; }
+
+	[Export]
+	public bool BuildMode { get; set; } = false;
+
+	[Export]
+	public float Age { get; set; } = 0;
+
+	[Export]
+	public PackedScene RootScene { get; set; }
+
+	public List<Nodule> ConnectedNodules { get; set; } = [];
+
+	[Signal]
+	public delegate void NoduleBuiltEventHandler();
+
+	[Signal]
+	public delegate void BuildingCanceledEventHandler();
+
+	public override void _Ready()
+	{
+		Radius = Age * MaxRadius;
+
+		AreaEntered += OnAreaEntered;
+		AreaExited += OnAreaExited;
+
+		QueueRedraw();
+	}
+
+	private void OnAreaEntered(Area2D area)
+	{
+		if (area is Nodule nodule)
+		{
+			if (nodule.BuildMode)
+			{
+				return;
+			}
+
+			ConnectedNodules.Add(nodule);
+		}
+	}
+
+	private void OnAreaExited(Area2D area)
+	{
+		if (area is Nodule nodule)
+		{
+			if (nodule.BuildMode)
+			{
+				return;
+			}
+
+			ConnectedNodules.Remove(nodule);
+		}
+	}
+
+	public override void _Process(double delta)
+	{
+		if (BuildMode)
+		{
+			GlobalPosition = GetGlobalMousePosition();
+
+			if (Input.IsMouseButtonPressed(MouseButton.Left))
+			{
+				EmitSignalNoduleBuilt();
+				BuildMode = false;
+
+				MouseEntered += OnMouseEntered;
+			}
+
+			if (Input.IsMouseButtonPressed(MouseButton.Right))
+			{
+				EmitSignalBuildingCanceled();
+				BuildMode = false;
+				QueueFree();
+			}
+		}
+		else
+		{
+			Age += GrowthFactor * delta.ToFloat();
+			Age = MathF.Min(Age, 1);
+
+			Radius = Age * MaxRadius;
+			QueueRedraw();
+		}
+
+		// TODO: replace with line2d?
+		QueueRedraw();
+	}
+
+	private void OnMouseEntered()
+	{
+		GD.Print("Mouse entered");
+	}
+
+	public override void _Draw()
+	{
+		foreach (var nodule in ConnectedNodules)
+		{
+			if (BuildMode)
+			{
+				DrawDashedLine(
+					Vector2.Zero,
+					nodule.GlobalPosition - GlobalPosition,
+					Colors.White,
+					2f,
+					dash: 4f,
+					antialiased: true
+				);
+			}
+		}
+
+		if (BuildMode)
+		{
+			DrawCircle(Vector2.Zero, Radius, new Color(Colors.DarkOliveGreen, 0.2f));
+		}
+		else
+		{
+			DrawCircle(Vector2.Zero, Radius, new Color(Colors.WhiteSmoke, 0.4f));
+		}
+	}
+}