3D Lighting

var sun = DirectionalLight3D.new()
add_child(sun)

# Position doesn't matter - only rotation affects direction
sun.rotation_degrees = Vector3(-45, 30, 0)

# Configure light properties
sun.light_color = Color(1.0, 0.95, 0.8)  # Warm sunlight
sun.light_energy = 1.0

# Enable shadows
sun.shadow_enabled = true

# Shadow quality modes
sun.directional_shadow_mode = DirectionalLight3D.SHADOW_PARALLEL_4_SPLITS

# Shadow distance
sun.directional_shadow_max_distance = 200.0
sun.directional_shadow_fade_start = 0.8

# Control if light affects scene, sky, or both
sun.sky_mode = DirectionalLight3D.SKY_MODE_LIGHT_AND_SKY

var bulb = OmniLight3D.new()
add_child(bulb)
bulb.position = Vector3(0, 3, 0)

# Configure range and attenuation
bulb.omni_range = 10.0
bulb.omni_attenuation = 2.0  # Physically accurate inverse square

# Light properties
bulb.light_color = Color(1.0, 0.8, 0.6)  # Warm white
bulb.light_energy = 1.5

# Linear falloff (constant brightness, smooth edge)
bulb.omni_attenuation = 0.0

# Realistic inverse square (physically accurate)
bulb.omni_attenuation = 2.0

# Custom curve
bulb.omni_attenuation = 1.5

# Enable shadows
bulb.shadow_enabled = true

# Shadow quality
bulb.omni_shadow_mode = OmniLight3D.SHADOW_CUBE  # Higher quality
# or
bulb.omni_shadow_mode = OmniLight3D.SHADOW_DUAL_PARABOLOID  # Faster

var spotlight = SpotLight3D.new()
add_child(spotlight)
spotlight.position = Vector3(0, 5, 0)
spotlight.rotation_degrees = Vector3(-90, 0, 0)  # Point down

# Cone configuration
spotlight.spot_angle = 45.0  # Angular radius in degrees
spotlight.spot_range = 15.0
spotlight.spot_attenuation = 1.0
spotlight.spot_angle_attenuation = 1.0

# Wide cone (like a lantern)
spotlight.spot_angle = 60.0

# Narrow cone (like a laser pointer)
spotlight.spot_angle = 15.0

# Adjust range
spotlight.spot_range = 20.0

# Distance attenuation (how light fades with distance)
spotlight.spot_attenuation = 2.0  # Inverse square

# Angular attenuation (how light fades toward cone edge)
spotlight.spot_angle_attenuation = 1.0  # Linear falloff

# Light intensity multiplier
light.light_energy = 1.0

# Light color in sRGB
light.light_color = Color(1.0, 1.0, 1.0)

# Specular contribution (shiny highlights)
light.light_specular = 1.0

# For DirectionalLight3D (Lux)
sun.light_intensity_lux = 100000  # Clear sunny day

# For OmniLight3D and SpotLight3D (Lumens)
bulb.light_intensity_lumens = 800  # ~60W light bulb

# Simulate real-world light temperatures (Kelvin)
light.light_temperature = 6500  # Daylight
light.light_temperature = 2700  # Warm incandescent
light.light_temperature = 5500  # Camera flash

light.light_negative = true
light.light_energy = 0.5  # Darkness intensity

# Secondary multiplier for GI
light.light_indirect_energy = 1.0

# Volumetric fog contribution
light.light_volumetric_fog_energy = 1.0

light.shadow_enabled = true

# Reduce shadow acne (self-shadowing artifacts)
light.shadow_bias = 0.1

# Reduce peter-panning (shadows separated from casters)
light.shadow_normal_bias = 2.0

# Shadow softness
light.shadow_blur = 1.0

# Shadow opacity
light.shadow_opacity = 1.0

# For DirectionalLight3D
sun.light_angular_distance = 0.5  # Sun's angular size

# For OmniLight3D and SpotLight3D
bulb.light_size = 0.2  # Light source size in Godot units

# Only cast shadows from specific layers
light.shadow_caster_mask = 0b00000001  # Only layer 1

light.distance_fade_enabled = true
light.distance_fade_begin = 40.0
light.distance_fade_length = 10.0
light.distance_fade_shadow = 50.0

light.light_projector = preload("res://textures/window_gobo.png")
light.shadow_enabled = true  # Required for projectors

# Light doesn't affect GI (fastest)
light.light_bake_mode = Light3D.BAKE_DISABLED

# Static GI (baked, no real-time updates)
light.light_bake_mode = Light3D.BAKE_STATIC

# Dynamic GI (real-time updates)
light.light_bake_mode = Light3D.BAKE_DYNAMIC

var voxel_gi = VoxelGI.new()
add_child(voxel_gi)
voxel_gi.extents = Vector3(20, 10, 20)

# Bake the GI volume
voxel_gi.bake()

# Set light to dynamic mode for real-time updates
sun.light_bake_mode = Light3D.BAKE_DYNAMIC

var env = Environment.new()
env.sdfgi_enabled = true
world_environment.environment = env

# Lights contribute automatically if bake mode allows
sun.light_bake_mode = Light3D.BAKE_DYNAMIC

var sun = DirectionalLight3D.new()
sun.light_color = Color(1.0, 0.98, 0.95)
sun.light_energy = 1.0
sun.rotation_degrees = Vector3(-50, 20, 0)
sun.shadow_enabled = true
sun.directional_shadow_mode = DirectionalLight3D.SHADOW_PARALLEL_4_SPLITS

# Sunlight through window
var sun = DirectionalLight3D.new()
sun.light_energy = 0.3  # Dimmer indoors
sun.light_color = Color(1.0, 0.95, 0.9)

# Ceiling light
var ceiling_light = OmniLight3D.new()
ceiling_light.position = Vector3(0, 3, 0)
ceiling_light.omni_range = 8.0
ceiling_light.light_energy = 2.0
ceiling_light.light_color = Color(1.0, 0.9, 0.8)

var moon = DirectionalLight3D.new()
moon.light_color = Color(0.7, 0.8, 1.0)  # Cool blue tint
moon.light_energy = 0.2  # Dim
moon.rotation_degrees = Vector3(-60, 0, 0)
moon.shadow_enabled = true

var torch = SpotLight3D.new()
torch.spot_angle = 30.0
torch.spot_range = 10.0
torch.spot_attenuation = 2.0
torch.light_color = Color(1.0, 0.7, 0.4)  # Warm fire glow
torch.light_energy = 3.0

# Check if light is in the tree
if light.is_inside_tree():
    print("Light active")

# Print light properties
print("Energy: ", light.light_energy)
print("Color: ", light.light_color)
print("Shadows: ", light.shadow_enabled)

# Editor-only lights
light.editor_only = true  # Not visible at runtime

# Disable lights that are too far
func _process(_delta):
    var camera_pos = get_viewport().get_camera_3d().global_position
    var distance = global_position.distance_to(camera_pos)
    
    if distance > 50.0:
        visible = false
    else:
        visible = true