Add networked crab gathering prototype

gathering/world_gatherable.gd

@@ -0,0 +1,113 @@
+class_name WorldGatherable
+extends Node3D
+
+const GatherableDataType = preload("res://gathering/gatherable_data.gd")
+
+var entity_id: String = ""
+var type_id: StringName
+var data: GatherableDataType
+var _sprite: Sprite3D
+var _target_position: Vector3
+var _target_yaw: float = 0.0
+var _has_state: bool = false
+var _despawning: bool = false
+
+
+func configure(
+	configured_entity_id: String,
+	configured_data: GatherableDataType,
+	position: Vector3,
+	yaw: float,
+) -> void:
+	entity_id = configured_entity_id
+	data = configured_data
+	type_id = data.type_id if data != null else StringName()
+	_ensure_visual()
+	if data != null and data.catch_data != null:
+		_sprite.texture = data.catch_data.display_texture
+		_sprite.pixel_size = data.sprite_pixel_size
+		_sprite.rotation_degrees.x = data.sprite_tilt_degrees
+	apply_network_state(position, yaw, true)
+
+
+func apply_network_state(
+	position: Vector3,
+	yaw: float,
+	immediate: bool = false,
+) -> void:
+	if _despawning or not position.is_finite() or not is_finite(yaw):
+		return
+	_target_position = position
+	_target_yaw = yaw
+	if immediate or not _has_state:
+		global_position = position
+		rotation.y = yaw
+	_has_state = true
+
+
+func play_despawn(with_dust: bool) -> void:
+	if _despawning:
+		return
+	_despawning = true
+	if with_dust:
+		_emit_dust()
+	var tween: Tween = create_tween()
+	tween.set_parallel(true)
+	tween.set_trans(Tween.TRANS_QUAD)
+	tween.set_ease(Tween.EASE_IN)
+	if _sprite != null:
+		tween.tween_property(_sprite, "position:y", -0.3, 0.3)
+		tween.tween_property(_sprite, "scale", Vector3(0.75, 0.75, 0.75), 0.3)
+	tween.chain().tween_callback(queue_free)
+
+
+func _process(delta: float) -> void:
+	if not _has_state or _despawning:
+		return
+	global_position = global_position.lerp(
+		_target_position,
+		1.0 - exp(-10.0 * delta),
+	)
+	rotation.y = lerp_angle(
+		rotation.y,
+		_target_yaw,
+		1.0 - exp(-8.0 * delta),
+	)
+
+
+func _ensure_visual() -> void:
+	if _sprite != null:
+		return
+	_sprite = Sprite3D.new()
+	_sprite.name = "GatherableSprite"
+	_sprite.position.y = 0.22
+	_sprite.shaded = false
+	_sprite.double_sided = true
+	_sprite.texture_filter = BaseMaterial3D.TEXTURE_FILTER_NEAREST
+	add_child(_sprite)
+
+
+func _emit_dust() -> void:
+	var particles := CPUParticles3D.new()
+	particles.name = "DustPoof"
+	particles.amount = 9
+	particles.lifetime = 0.55
+	particles.one_shot = true
+	particles.explosiveness = 1.0
+	particles.direction = Vector3.UP
+	particles.spread = 58.0
+	particles.gravity = Vector3(0.0, -2.4, 0.0)
+	particles.initial_velocity_min = 0.65
+	particles.initial_velocity_max = 1.25
+	particles.scale_amount_min = 0.7
+	particles.scale_amount_max = 1.35
+	var dust_material := StandardMaterial3D.new()
+	dust_material.albedo_color = Color(0.58, 0.46, 0.31, 0.85)
+	dust_material.transparency = BaseMaterial3D.TRANSPARENCY_ALPHA
+	dust_material.shading_mode = BaseMaterial3D.SHADING_MODE_UNSHADED
+	var dust_mesh := BoxMesh.new()
+	dust_mesh.size = Vector3(0.1, 0.1, 0.1)
+	dust_mesh.material = dust_material
+	particles.mesh = dust_mesh
+	add_child(particles)
+	particles.emitting = true