Effect system and snowpea

scripts/components/zombies/ZombieMover.cs

@@ -4,7 +4,10 @@ namespace Newlon.Components.Zombies;
 
 public partial class ZombieMover : Node
 {
-    private float _speed;
+    [Export(hintString: "suffix:tile/sec")]
+    private float _speedMultiplier = 1.0f;
+    
+    private float _speed = 1;
 
     private Node2D _zombie;
 
@@ -15,7 +18,12 @@ public partial class ZombieMover : Node
 
     public override void _PhysicsProcess(double delta)
     {
-        _zombie.Position -= _zombie.Transform.X * _speed * (float)delta * Utility.TileWidth * GetParent<RuntimeZombieData>().LocalTimescale;
+        _zombie.Position -= _zombie.Transform.X 
+                                * _speed 
+                                * (float)delta 
+                                * Utility.TileWidth 
+                                * GetParent<RuntimeZombieData>().LocalTimescale 
+                                * _speedMultiplier;
     }
 
     public void SetSpeed(float speed)