Lots of usability imporvements

proto2/elements/arrow.tscn

@@ -0,0 +1,21 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://elements/arrow.escn" type="PackedScene" id=1]
+
+[sub_resource type="SpatialMaterial" id=1]
+flags_transparent = true
+flags_no_depth_test = true
+flags_do_not_receive_shadows = true
+albedo_color = Color( 1, 0.8, 0.00784314, 0.662745 )
+metallic = 0.5
+roughness = 0.2
+emission_enabled = true
+emission = Color( 0.854902, 0.627451, 0.0823529, 1 )
+emission_energy = 0.7
+emission_operator = 0
+emission_on_uv2 = false
+
+[node name="arrow" index="0" instance=ExtResource( 1 )]
+
+[node name="arrow" parent="." index="0"]
+material/0 = SubResource( 1 )