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polish(ambience): depth-based fog/ambient darkening

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Interpole en temps réel bg/ambient/fog entre palette de surface (teal
lumineux y=55) et palette abyssale (bleu-noir y=-40). Fog density
augmente en plongée (0.02 → 0.055) pour renforcer la sensation
oppressante des grandes profondeurs. Courbe smoothstep pour transition
organique.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Poulpe (Gouvernance Gitea)
2026-04-20 17:59:08 +00:00
parent df63dec39b
commit 183bb0691d
1 changed files with 78 additions and 33 deletions
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111
scripts/ambience/UnderwaterEnvironment.gd
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@@ -1,29 +1,52 @@
extends WorldEnvironment extends WorldEnvironment
const SHALLOW_Y: float = 55.0
const ABYSS_Y: float = -40.0
var _env: Environment = null
var _player: Node3D = null
var _next_player_scan: float = 0.0
# Reference palette at shallow depth (near surface)
var _shallow_bg: Color = Color(0.03, 0.12, 0.22)
var _shallow_ambient: Color = Color(0.2, 0.4, 0.6)
var _shallow_fog: Color = Color(0.1, 0.3, 0.5)
var _shallow_vol_fog: Color = Color(0.2, 0.5, 0.7)
var _shallow_fog_density: float = 0.02
var _shallow_ambient_energy: float = 0.4
# Palette at abyssal depth
var _abyss_bg: Color = Color(0.01, 0.02, 0.05)
var _abyss_ambient: Color = Color(0.04, 0.07, 0.14)
var _abyss_fog: Color = Color(0.02, 0.04, 0.08)
var _abyss_vol_fog: Color = Color(0.05, 0.10, 0.18)
var _abyss_fog_density: float = 0.055
var _abyss_ambient_energy: float = 0.12
func _ready() -> void: func _ready() -> void:
var env := Environment.new() _env = Environment.new()
env.background_mode = Environment.BG_COLOR _env.background_mode = Environment.BG_COLOR
env.background_color = Color(0.03, 0.12, 0.22) _env.background_color = _shallow_bg
env.ambient_light_source = Environment.AMBIENT_SOURCE_COLOR _env.ambient_light_source = Environment.AMBIENT_SOURCE_COLOR
env.ambient_light_color = Color(0.2, 0.4, 0.6) _env.ambient_light_color = _shallow_ambient
env.ambient_light_energy = 0.4 _env.ambient_light_energy = _shallow_ambient_energy
env.fog_enabled = true _env.fog_enabled = true
env.fog_light_color = Color(0.1, 0.3, 0.5) _env.fog_light_color = _shallow_fog
env.fog_density = 0.02 _env.fog_density = _shallow_fog_density
env.fog_aerial_perspective = 0.3 _env.fog_aerial_perspective = 0.3
env.volumetric_fog_enabled = true _env.volumetric_fog_enabled = true
env.volumetric_fog_density = 0.05 _env.volumetric_fog_density = 0.05
env.volumetric_fog_albedo = Color(0.2, 0.5, 0.7) _env.volumetric_fog_albedo = _shallow_vol_fog
env.volumetric_fog_emission = Color(0.02, 0.06, 0.1) _env.volumetric_fog_emission = Color(0.02, 0.06, 0.1)
env.volumetric_fog_emission_energy = 0.1 _env.volumetric_fog_emission_energy = 0.1
env.volumetric_fog_length = 64.0 _env.volumetric_fog_length = 64.0
env.volumetric_fog_detail_spread = 2.0 _env.volumetric_fog_detail_spread = 2.0
# Attach custom fog shader
var fog_mat := FogMaterial.new() var fog_mat := FogMaterial.new()
var fog_shader := load("res://shaders/underwater_fog.gdshader") var fog_shader := load("res://shaders/underwater_fog.gdshader")
if fog_shader: if fog_shader:
@@ -34,22 +57,44 @@ func _ready() -> void:
fog_volume.material = fog_mat fog_volume.material = fog_mat
add_child(fog_volume) add_child(fog_volume)
env.glow_enabled = true _env.glow_enabled = true
env.glow_intensity = 0.5 _env.glow_intensity = 0.5
env.glow_bloom = 0.1 _env.glow_bloom = 0.1
env.glow_blend_mode = Environment.GLOW_BLEND_MODE_SOFTLIGHT _env.glow_blend_mode = Environment.GLOW_BLEND_MODE_SOFTLIGHT
env.ssao_enabled = true _env.ssao_enabled = true
env.ssao_radius = 1.0 _env.ssao_radius = 1.0
env.ssao_intensity = 1.0 _env.ssao_intensity = 1.0
env.ssao_power = 1.5 _env.ssao_power = 1.5
env.ssao_detail = 0.5 _env.ssao_detail = 0.5
env.tone_mapper = Environment.TONE_MAPPER_FILMIC _env.tone_mapper = Environment.TONE_MAPPER_FILMIC
env.exposure = 1.0 _env.exposure = 1.0
env.adjustment_enabled = true _env.adjustment_enabled = true
env.adjustment_saturation = 1.1 _env.adjustment_saturation = 1.1
env.adjustment_color_correction = null _env.adjustment_color_correction = null
environment = env environment = _env
func _process(delta: float) -> void:
_next_player_scan -= delta
if not is_instance_valid(_player) and _next_player_scan <= 0.0:
_next_player_scan = 1.0
_player = get_tree().get_first_node_in_group("player") as Node3D
if not is_instance_valid(_player) or _env == null:
return
var y: float = _player.global_position.y
var t: float = clampf(inverse_lerp(SHALLOW_Y, ABYSS_Y, y), 0.0, 1.0)
# ease curve: more rapid darkening in mid-depth
var t_curved: float = smoothstep(0.0, 1.0, t)
_env.background_color = _shallow_bg.lerp(_abyss_bg, t_curved)
_env.ambient_light_color = _shallow_ambient.lerp(_abyss_ambient, t_curved)
_env.ambient_light_energy = lerpf(_shallow_ambient_energy, _abyss_ambient_energy, t_curved)
_env.fog_light_color = _shallow_fog.lerp(_abyss_fog, t_curved)
_env.fog_density = lerpf(_shallow_fog_density, _abyss_fog_density, t_curved)
_env.volumetric_fog_albedo = _shallow_vol_fog.lerp(_abyss_vol_fog, t_curved)