Initial commit

scripts/LinearProjectile.cs

@@ -0,0 +1,31 @@
+using Godot;
+using System;
+
+//
+// Projectile that travels from left to right
+//
+
+public partial class LinearProjectile : Area2D, IProjectile
+{
+    [Export(hintString: "suffix:tile/sec")]
+    private float _speed;
+    [Export]
+    private int _damage;
+    private int _line;
+    public int Line { get => _line; set {  _line = value; } }
+
+    public override void _PhysicsProcess(double delta)
+    {
+        Translate(Vector2.Right * _speed * (float)delta * Utility.TileWidth);
+    }
+
+    public void OnAreaEntered(Area2D area)
+    {
+        var entity = area.GetParent<IEntity>();
+        if (entity != null && entity.Line == _line)
+        {
+            entity.TakeDamage(_damage);
+            QueueFree();
+        }
+    }
+}