Noise-driven fire light rig with bounce, core, embers and glow

scripts/office_atmosphere.gd

@@ -1,9 +1,8 @@
 extends Node3D
-## Sparse office props and bounded fire animation; Web/Compatibility safe.
-const FIRE_MIN := 1.9
-const FIRE_MAX := 2.8
+## Sparse office props; the fire itself is a reusable rig in scripts/fire_light.gd.
+const FireLight = preload("res://scripts/fire_light.gd")
 var fire_light: OmniLight3D
-var _time := 0.0
+var fire_rig: Node3D
 
 func _ready() -> void:
 	name = "OfficeAtmosphere"
@@ -150,17 +149,11 @@ func _barrel(pos: Vector3) -> void:
 	fire.mesh = quad
 	fire.cast_shadow = GeometryInstance3D.SHADOW_CASTING_SETTING_OFF
 	barrel.add_child(fire)
-	fire_light = OmniLight3D.new()
-	fire_light.name = "BarrelFireLight"
-	fire_light.position = Vector3(0, 1.5, 0)
-	fire_light.light_color = Color(1, 0.36, 0.07)
-	fire_light.light_energy = (FIRE_MIN + FIRE_MAX) * 0.5
-	fire_light.omni_range = 10
-	fire_light.shadow_enabled = true
-	barrel.add_child(fire_light)
-
-func _process(dt: float) -> void:
-	_time += dt
-	# Smooth, deterministic, bounded flicker: no per-frame random flashes.
-	var wave := 0.5 + 0.3 * sin(_time * 7.1) + 0.2 * sin(_time * 11.7 + 1.2)
-	fire_light.light_energy = lerpf(FIRE_MIN, FIRE_MAX, wave)
+	# Rig: noise-driven main light (the only shadow caster), fake-GI bounce light,
+	# hot core light and floating embers. The flame follows the same signal.
+	fire_rig = Node3D.new()
+	fire_rig.set_script(FireLight)
+	fire_rig.position = Vector3(0, 1.5, 0)
+	barrel.add_child(fire_rig)
+	fire_rig.attach_flame(fire)
+	fire_light = fire_rig.main_light