GDScript needed for fountain shader

tool
extends Node2D

export var water_color : Color = Color(0.1, 0.4, 0.9, 0.5) setget update_water_color

export var displacement : float = 8.0 setget update_displacement

func _ready():
	$Render.material.set_shader_param("water_color", water_color)
	$Render.material.set_shader_param("displacement", displacement)

func _process(delta):
	$Render.material.set_shader_param("zoom", get_viewport_transform().y.y)

func update_water_color(value):
	water_color = value
	$Render.material.set_shader_param("water_color", value)
	property_list_changed_notify()

func update_displacement(value):
	displacement = value
	$Render.material.set_shader_param("displacement", value)
	property_list_changed_notify()