Added 3D UI arrow & transparent gummy material

asset_dev/arrow.blend.import

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+[remap]
+
+importer="scene"
+importer_version=1
+type="PackedScene"
+uid="uid://byrygy8j6yeur"
+valid=false
+
+[deps]
+
+source_file="res://asset_dev/arrow.blend"
+
+[params]
+
+nodes/root_type=""
+nodes/root_name=""
+nodes/apply_root_scale=true
+nodes/root_scale=1.0
+nodes/import_as_skeleton_bones=false
+meshes/ensure_tangents=true
+meshes/generate_lods=true
+meshes/create_shadow_meshes=true
+meshes/light_baking=1
+meshes/lightmap_texel_size=0.2
+meshes/force_disable_compression=false
+skins/use_named_skins=true
+animation/import=true
+animation/fps=30
+animation/trimming=false
+animation/remove_immutable_tracks=true
+animation/import_rest_as_RESET=false
+import_script/path=""
+_subresources={}
+blender/nodes/visible=0
+blender/nodes/active_collection_only=false
+blender/nodes/punctual_lights=true
+blender/nodes/cameras=true
+blender/nodes/custom_properties=true
+blender/nodes/modifiers=1
+blender/meshes/colors=false
+blender/meshes/uvs=true
+blender/meshes/normals=true
+blender/meshes/tangents=true
+blender/meshes/skins=2
+blender/meshes/export_bones_deforming_mesh_only=false
+blender/materials/unpack_enabled=true
+blender/materials/export_materials=1
+blender/animation/limit_playback=true
+blender/animation/always_sample=true
+blender/animation/group_tracks=true

assets/materials/gummy_material.tres

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+[gd_resource type="ShaderMaterial" load_steps=8 format=3 uid="uid://d3ka0yjhxu5ks"]
+
+[ext_resource type="Shader" path="res://src/shaders/frosted_glass.gdshader" id="1_jx055"]
+
+[sub_resource type="FastNoiseLite" id="FastNoiseLite_ieey5"]
+noise_type = 2
+fractal_type = 2
+
+[sub_resource type="NoiseTexture2D" id="NoiseTexture2D_7g8ap"]
+seamless = true
+as_normal_map = true
+noise = SubResource("FastNoiseLite_ieey5")
+
+[sub_resource type="FastNoiseLite" id="FastNoiseLite_etunr"]
+noise_type = 2
+seed = 1
+fractal_type = 2
+
+[sub_resource type="NoiseTexture2D" id="NoiseTexture2D_5huy0"]
+seamless = true
+noise = SubResource("FastNoiseLite_etunr")
+
+[sub_resource type="FastNoiseLite" id="FastNoiseLite_bxk71"]
+
+[sub_resource type="NoiseTexture2D" id="NoiseTexture2D_umhmc"]
+noise = SubResource("FastNoiseLite_bxk71")
+
+[resource]
+render_priority = 0
+shader = ExtResource("1_jx055")
+shader_parameter/albedo = Color(1, 0.6, 1, 0.34902)
+shader_parameter/roughness = 0.55
+shader_parameter/refraction = 0.0500008
+shader_parameter/refraction_texture_channel = Vector4(1, 0, 0, 0)
+shader_parameter/texture_refraction = SubResource("NoiseTexture2D_5huy0")
+shader_parameter/normal_strength = 0.200001
+shader_parameter/normal_map = SubResource("NoiseTexture2D_7g8ap")
+shader_parameter/subsurface_scattering_strength = 1.0
+shader_parameter/texture_subsurface_scattering = SubResource("NoiseTexture2D_umhmc")
+shader_parameter/edge_color = Color(0, 0, 0, 1)
+shader_parameter/surface_contribution = 0.9
+shader_parameter/specular_contribution = 20.0
+shader_parameter/refraction_contribution = 3.0
+shader_parameter/uv1_scale = Vector3(1, 1, 1)
+shader_parameter/uv1_offset = Vector3(0, 0, 0)

assets/models/ui/arrow/arrow.glb.import

@@ -0,0 +1,43 @@
+[remap]
+
+importer="scene"
+importer_version=1
+type="PackedScene"
+uid="uid://bw54bi35myvpg"
+path="res://.godot/imported/arrow.glb-529b70086bc22d1673d9206ecda53d79.scn"
+
+[deps]
+
+source_file="res://assets/models/ui/arrow/arrow.glb"
+dest_files=["res://.godot/imported/arrow.glb-529b70086bc22d1673d9206ecda53d79.scn"]
+
+[params]
+
+nodes/root_type=""
+nodes/root_name=""
+nodes/apply_root_scale=true
+nodes/root_scale=1.0
+nodes/import_as_skeleton_bones=false
+meshes/ensure_tangents=true
+meshes/generate_lods=true
+meshes/create_shadow_meshes=true
+meshes/light_baking=1
+meshes/lightmap_texel_size=0.2
+meshes/force_disable_compression=false
+skins/use_named_skins=true
+animation/import=true
+animation/fps=30
+animation/trimming=false
+animation/remove_immutable_tracks=true
+animation/import_rest_as_RESET=false
+import_script/path=""
+_subresources={
+"materials": {
+"Material": {
+"use_external/enabled": false,
+"use_external/path": "res://assets/materials/gummy_material.tres"
+}
+}
+}
+gltf/naming_version=1
+gltf/embedded_image_handling=1

src/shaders/frosted_glass.gdshader

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+shader_type spatial;
+// render_mode blend_mix, depth_draw_always, cull_disabled;
+render_mode diffuse_burley, specular_schlick_ggx, blend_mix, depth_draw_always, cull_disabled, sss_mode_skin;
+
+group_uniforms albedo;
+uniform vec4 albedo: source_color = vec4(1.0, 1.0, 1.0, 0.0);
+uniform sampler2D albedo_texture: source_color, hint_default_white;
+
+group_uniforms roughness;
+uniform float roughness: hint_range(0.0, 1.0) = 0.15;
+uniform sampler2D roughness_texture: hint_roughness_r;
+
+group_uniforms refraction;
+uniform float refraction: hint_range(-16,16) = 0.5;
+uniform sampler2D texture_refraction: filter_linear_mipmap,repeat_enable;
+uniform vec4 refraction_texture_channel = vec4(1.0, 0.0, 0.0, 0.0);
+uniform sampler2D screen_texture: hint_screen_texture, repeat_disable, filter_linear_mipmap;
+
+group_uniforms normal;
+uniform float normal_strength: hint_range(-16.0, 16.0) = 0.0;
+uniform sampler2D normal_map: hint_normal;
+
+group_uniforms subsurface_scattering;
+uniform float subsurface_scattering_strength: hint_range(0.0, 1.0, 0.01);
+uniform sampler2D texture_subsurface_scattering : hint_default_white, filter_linear_mipmap, repeat_enable;
+
+group_uniforms misc;
+uniform vec4 edge_color: source_color = vec4(0.0, 0.0, 0.0, 1.0);
+uniform float surface_contribution = 0.2;
+uniform float specular_contribution = 0.2;
+uniform float refraction_contribution = 1.0;
+
+group_uniforms uv;
+uniform vec3 uv1_scale = vec3(1.0);
+uniform vec3 uv1_offset = vec3(0.0);
+
+float SchlickFresnel(float u) {
+	float m = 1.0 - u;
+	float m2 = m * m;
+	return m2 * m2 * m;
+}
+
+void vertex() {
+	UV=UV*uv1_scale.xy+uv1_offset.xy;
+}
+
+void fragment() {
+	NORMAL_MAP = texture(normal_map, UV).xyz;
+	NORMAL_MAP_DEPTH = normal_strength;
+	
+	float VdotN = dot(VIEW, NORMAL);
+	float fresnel = clamp(SchlickFresnel(VdotN), 0.0, 1.0);
+	
+	vec4 albedo_mix = texture(albedo_texture, UV) * albedo;
+	float roughness_mix = texture(roughness_texture, UV).r * roughness;
+	float sss_mix = texture(texture_subsurface_scattering, UV).r * subsurface_scattering_strength;
+	
+	float a = mix(0.001, 1.0, albedo_mix.a);
+	float a_factor_0 = mix(fresnel * edge_color.a, 1.0, a);
+	float a_factor_1 = 0.5 * sqrt(a);
+	float a_factor_2 = a_factor_0 + a_factor_1;
+	
+	ALBEDO = mix(edge_color.rgb * edge_color.a, albedo_mix.rgb * surface_contribution, a);
+	ROUGHNESS = roughness_mix;
+	SPECULAR = 0.5 * inversesqrt(specular_contribution);
+	SSS_STRENGTH = sss_mix;
+	
+	vec3 unpacked_normal = NORMAL_MAP;
+	unpacked_normal.xy = unpacked_normal.xy * 2.0 - 1.0;
+	unpacked_normal.z = sqrt(max(0.0, 1.0 - dot(unpacked_normal.xy, unpacked_normal.xy)));
+	vec3 ref_normal = normalize(mix(NORMAL,TANGENT * unpacked_normal.x + BINORMAL * unpacked_normal.y + NORMAL * unpacked_normal.z,NORMAL_MAP_DEPTH));
+	vec2 ref_ofs = SCREEN_UV - ref_normal.xy * dot(texture(texture_refraction, UV),refraction_texture_channel) * refraction;
+	float ref_amount = 1.0 - albedo_mix.a;
+	EMISSION += (textureLod(screen_texture,ref_ofs,ROUGHNESS * 8.0).rgb * ref_amount * EXPOSURE * mix(vec3(mix(0.02, 0.1, a)), albedo_mix.rgb*refraction_contribution, a))/a_factor_2;
+	ALBEDO *= 1.0 - ref_amount;
+}

src/ui/arrow.gd

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+@tool
+extends Node3D
+
+const COLOR_PARAMETER := "albedo"
+
+enum Loop {
+	RESET,
+	BOB_TIP,
+	BOB_TAIL,
+}
+
+@export var loop_animation: Loop:
+	set(value):
+		if is_instance_valid(animation_player):
+			animation_player.play(str(Loop.keys()[value]))
+		loop_animation = value
+
+@export var color := Color("#ff99ff99"):
+	set(value):
+		if is_instance_valid(cube):
+			var shader: ShaderMaterial = cube.get_surface_override_material(0)
+			shader.set_shader_parameter(COLOR_PARAMETER, value)
+		color = value
+
+@onready var cube: MeshInstance3D = %Cube
+@onready var animation_player: AnimationPlayer = %AnimationPlayer
+
+
+func _ready() -> void:
+	loop_animation = loop_animation
+	color = color

src/ui/arrow.tscn

@@ -0,0 +1,112 @@
+[gd_scene load_steps=9 format=3 uid="uid://c2k88ns0h5ie1"]
+
+[ext_resource type="PackedScene" uid="uid://bw54bi35myvpg" path="res://assets/models/ui/arrow/arrow.glb" id="1_xifl6"]
+[ext_resource type="Script" path="res://src/ui/arrow.gd" id="2_0viam"]
+[ext_resource type="Material" uid="uid://d3ka0yjhxu5ks" path="res://assets/materials/gummy_material.tres" id="3_g7vwe"]
+
+[sub_resource type="Animation" id="Animation_hsqkd"]
+resource_name = "bob_tail"
+length = 0.8
+loop_mode = 1
+step = 0.01
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Cube:scale")
+tracks/0/interp = 2
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.4, 0.8),
+"transitions": PackedFloat32Array(1, 1, 1),
+"update": 0,
+"values": [Vector3(1, 1, 1), Vector3(1, 0.95, 1), Vector3(1, 1, 1)]
+}
+tracks/1/type = "value"
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/path = NodePath("Cube:position")
+tracks/1/interp = 2
+tracks/1/loop_wrap = true
+tracks/1/keys = {
+"times": PackedFloat32Array(0, 0.4, 0.8),
+"transitions": PackedFloat32Array(1, 1, 1),
+"update": 0,
+"values": [Vector3(0, 0, 0), Vector3(0, 0.38, 0), Vector3(0, 0, 0)]
+}
+
+[sub_resource type="Animation" id="Animation_evviq"]
+resource_name = "loop"
+length = 0.8
+loop_mode = 1
+step = 0.01
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Cube:scale")
+tracks/0/interp = 2
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.4, 0.8),
+"transitions": PackedFloat32Array(1, 1, 1),
+"update": 0,
+"values": [Vector3(1, 1, 1), Vector3(1, 0.95, 1), Vector3(1, 1, 1)]
+}
+
+[sub_resource type="Animation" id="Animation_uoidj"]
+length = 0.001
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Cube:scale")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 0,
+"values": [Vector3(1, 1, 1)]
+}
+tracks/1/type = "value"
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/path = NodePath("Cube:position")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 0,
+"values": [Vector3(0, 0, 0)]
+}
+
+[sub_resource type="AnimationLibrary" id="AnimationLibrary_7avkl"]
+_data = {
+"BOB_TAIL": SubResource("Animation_hsqkd"),
+"BOB_TIP": SubResource("Animation_evviq"),
+"RESET": SubResource("Animation_uoidj")
+}
+
+[sub_resource type="BoxMesh" id="BoxMesh_q4cym"]
+
+[node name="Arrow" instance=ExtResource("1_xifl6")]
+script = ExtResource("2_0viam")
+
+[node name="Cube" parent="." index="0"]
+unique_name_in_owner = true
+surface_material_override/0 = ExtResource("3_g7vwe")
+
+[node name="AnimationPlayer" type="AnimationPlayer" parent="." index="1"]
+unique_name_in_owner = true
+libraries = {
+"": SubResource("AnimationLibrary_7avkl")
+}
+autoplay = "BOB_TIP"
+
+[node name="Node3D" type="Node3D" parent="." index="2"]
+transform = Transform3D(1, 0, 0, 0, 7.619, 0, 0, 0, 1, 0, 0, 0)
+visible = false
+
+[node name="MeshInstance3D" type="MeshInstance3D" parent="Node3D" index="0"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.500484, 0)
+mesh = SubResource("BoxMesh_q4cym")
+skeleton = NodePath("../..")