item selection

scenes/interactivity_outline.gdshader

@@ -0,0 +1,14 @@
+shader_type spatial;
+render_mode blend_mix, cull_front, unshaded;
+
+uniform vec4 color : source_color = vec4(1,0,0,1);
+uniform float size : hint_range(1.0, 1.5, 0.01) = 1.05;
+
+void vertex() {
+	VERTEX *= size;
+}
+
+void fragment() {
+	ALBEDO = color.rgb;
+	ALPHA = color.a;
+}

scenes/water_bomb_model.tscn

@@ -1,6 +1,17 @@
-[gd_scene load_steps=2 format=3 uid="uid://s2a1pry5fw8f"]
+[gd_scene load_steps=4 format=3 uid="uid://s2a1pry5fw8f"]
+
+[ext_resource type="Shader" path="res://scenes/interactivity_outline.gdshader" id="1_m18kw"]
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_gi5rt"]
+resource_local_to_scene = true
+render_priority = 0
+shader = ExtResource("1_m18kw")
+shader_parameter/color = Color(1, 1, 1, 0)
+shader_parameter/size = 1.24
 
 [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_ptaep"]
+resource_local_to_scene = true
+next_pass = SubResource("ShaderMaterial_gi5rt")
 albedo_color = Color(0.0936238, 0.825356, 1, 1)
 metallic = 0.8
 roughness = 0.4