mostly fixed movement but there's still a problem with enemies in the top left cell (0,0) being set to not solid

enemy.tscn

@@ -10,6 +10,7 @@ bounce = 0.5
 radius = 12.5
 
 [node name="Enemy" type="StaticBody2D" unique_id=1417697759]
+input_pickable = true
 physics_material_override = SubResource("PhysicsMaterial_7k104")
 script = ExtResource("1_4gyqm")
 
@@ -19,3 +20,6 @@ shape = SubResource("CircleShape2D_4gyqm")
 [node name="Sprite2D" type="Sprite2D" parent="." unique_id=1941012605]
 scale = Vector2(0.5, 0.5)
 texture = ExtResource("1_7k104")
+
+[connection signal="mouse_entered" from="." to="." method="OnMouseEntered"]
+[connection signal="mouse_exited" from="." to="." method="OnMouseExited"]