Make boss encounter more dynamic

surface/BossSurfaceProfile.tres

@@ -13,6 +13,7 @@ editor_visible = false
 show_capture_status = false
 background_shader = ExtResource("2")
 background_field_texture = ExtResource("4")
+background_cell_size = 90.0
 base_color = Color(0.055, 0.008, 0.05, 1)
 crater_color = Color(0.16, 0.018, 0.10, 1)
 highlight_color = Color(0.16, 0.66, 0.72, 1)

surface/PlanetSurfaceProfile.gd

@@ -21,6 +21,9 @@ extends Resource
 # terrain still bakes once; authored surfaces can avoid both that load spike
 # and all per-frame procedural fragment work by shipping their tile directly.
 @export var background_field_texture: Texture2D = null
+# World-space size of one background field cell. Smaller values reveal more
+# of the authored field at once without changing the gameplay camera zoom.
+@export_range(40.0, 440.0, 1.0) var background_cell_size: float = 220.0
 @export var base_color: Color = Color(0.75, 0.75, 0.76, 1.0)
 @export var crater_color: Color = Color(0.44, 0.44, 0.45, 1.0)
 @export var highlight_color: Color = Color(0.89, 0.89, 0.9, 1.0)

surface/SurfaceBackground.gd

@@ -70,6 +70,7 @@ func apply_profile(profile: Resource) -> void:
 	if profile.background_shader != null:
 		material.shader = profile.background_shader
 	_provided_field_texture = profile.background_field_texture
+	material.set_shader_parameter("cell_size", profile.background_cell_size)
 	material.set_shader_parameter("base_color", base_color)
 	material.set_shader_parameter("crater_color", crater_color)
 	material.set_shader_parameter("highlight_color", highlight_color)