My first 3D game with Godot 4.4

player/projectile/projectile.gdshader

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+shader_type spatial;
+render_mode ambient_light_disabled, shadows_disabled, unshaded;
+
+uniform vec3 tail_color : source_color;
+uniform vec3 head_color : source_color;
+
+void vertex() {
+	float def = sin(UV.y * 2.0 * PI - TIME * 20.0) + 1.0 / 2.0;
+	VERTEX.xz += NORMAL.xz * def * 0.05 * UV.y * COLOR.x;
+}
+
+void fragment() {
+	ALBEDO = mix(head_color, tail_color, COLOR.x);
+}

player/projectile/projectile.gdshader.uid

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+uid://b4wc5wsyakc0a

player/projectile/projectile_3d.tscn

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+[gd_scene load_steps=4 format=3 uid="uid://b2dxu3lnx1jx5"]
+
+[ext_resource type="PackedScene" uid="uid://o1s0yu8jt5h4" path="res://player/projectile/projectile_model.glb" id="1_ndq6i"]
+[ext_resource type="Shader" uid="uid://b4wc5wsyakc0a" path="res://player/projectile/projectile.gdshader" id="2_chfaf"]
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_htc8w"]
+render_priority = 0
+shader = ExtResource("2_chfaf")
+shader_parameter/tail_color = Color(0.863943, 0.713942, 0.177483, 1)
+shader_parameter/head_color = Color(0.700086, 0.267569, 6.73831e-07, 1)
+
+[node name="Projectile3D" instance=ExtResource("1_ndq6i")]
+transform = Transform3D(-4.37114e-08, 0, 1, 0, 1, 0, -1, 0, -4.37114e-08, 0, 0, 0)
+
+[node name="Projectile" parent="." index="0"]
+material_override = SubResource("ShaderMaterial_htc8w")

player/projectile/projectile_model.glb.import

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+[remap]
+
+importer="scene"
+importer_version=1
+type="PackedScene"
+uid="uid://o1s0yu8jt5h4"
+path="res://.godot/imported/projectile_model.glb-828324a605ffc923b73f3dcca1df4ac2.scn"
+
+[deps]
+
+source_file="res://player/projectile/projectile_model.glb"
+dest_files=["res://.godot/imported/projectile_model.glb-828324a605ffc923b73f3dcca1df4ac2.scn"]
+
+[params]
+
+nodes/root_type=""
+nodes/root_name=""
+nodes/apply_root_scale=true
+nodes/root_scale=1.0
+nodes/import_as_skeleton_bones=false
+nodes/use_node_type_suffixes=true
+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={}
+gltf/naming_version=1
+gltf/embedded_image_handling=1