2025-03-25 00:22:03 +00:00
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extends Marker3D
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class_name BuyancyProbe
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## How much force is applied upward
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@export var float_strength: float = 10.0
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2025-03-25 08:52:48 +00:00
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@export var max_float_force:float = 500.0
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2025-03-25 00:22:03 +00:00
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var currentdepth:float
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@export_category("Debug")
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@export var show_probe :bool = false
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var sphere_preview:MeshInstance3D
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@onready var debug_sphere:SphereMesh = SphereMesh.new()
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@export_category("Wave")
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var noise: Image
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var wave_speed: float = 1.0
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var noise_scale: float
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var height_scale: float
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@onready var ocean_mat: ShaderMaterial = preload("uid://cf3lxmfb2d7c8")
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@onready var gravity: float = ProjectSettings.get_setting("physics/3d/default_gravity")
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@onready var OceanNode:Ocean = get_tree().get_first_node_in_group("Ocean")
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var Oceantime:float
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# Called when the node enters the scene tree for the first time.
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func _ready() -> void:
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if ocean_mat != null:
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update_param()
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if show_probe:
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sphere_preview = MeshInstance3D.new()
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sphere_preview.set_name("Sphere")
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add_child(sphere_preview)
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debug_sphere.radius = 0.1
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debug_sphere.height = 0.2
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sphere_preview.mesh = debug_sphere
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func _physics_process(_delta: float) -> void:
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var depth = get_wave_height(global_position,Oceantime) - global_position.y
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2025-03-25 08:52:48 +00:00
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#print(depth)
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if depth > 0.0 && get_parent() != null:
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var parentRigid = get_parent()
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var float_force = parentRigid.mass * float_strength
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parentRigid.apply_force(Vector3.UP * clamp(gravity * depth * float_force,-max_float_force,max_float_force) ,global_position-parentRigid.global_position)
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2025-03-25 00:22:03 +00:00
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func _process(_delta: float) -> void:
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if OceanNode != null:
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Oceantime = OceanNode.wave_time
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if show_probe && sphere_preview != null:
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sphere_preview.global_position = global_position
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sphere_preview.global_position.y = get_wave_height(global_position,Oceantime)
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# Calculate the wave height using a sine function.
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func get_wave_height(world_position: Vector3, time: float) -> float:
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var uv_x = wrapf(world_position.x / noise_scale + time * wave_speed, 0, 1)
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var uv_y = wrapf(world_position.z / noise_scale + time * wave_speed, 0, 1)
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var pixel_pos = Vector2(uv_x * noise.get_width(), uv_y * noise.get_height())
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return OceanNode.global_position.y + noise.get_pixelv(pixel_pos).r * height_scale;
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func update_param():
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if ocean_mat != null:
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wave_speed = ocean_mat.get_shader_parameter("wave_speed")
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noise = ocean_mat.get_shader_parameter("wave").noise.get_seamless_image(512, 512)
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noise_scale = ocean_mat.get_shader_parameter("noise_scale")
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wave_speed = ocean_mat.get_shader_parameter("wave_speed")
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height_scale = ocean_mat.get_shader_parameter("height_scale")
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