23 lines
667 B
GDScript
23 lines
667 B
GDScript
extends Node3D
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@export var day_length := 120.0 # seconds for full rotation
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@export var start_light_angle := -90.0
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var end_light_angle = start_light_angle + 360.0
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var start_radians = start_light_angle * PI / 180
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var time := 0.0
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@onready var sun := $DirectionalLight3D
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func _process(delta):
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time = fmod((time + delta), day_length)
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var t = time / day_length
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# Rotate sun around X axis
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var angle = lerp(start_light_angle, end_light_angle, t) # sunrise → sunset → night → sunrise
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sun.rotation_degrees.x = angle
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# Adjust intensity
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var curSin = -sin((t * TAU) + start_radians)
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var energy = clamp((curSin * 1.0) + 0.2, 0.0, 1.2)
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sun.light_energy = energy
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