scorpion21211-cmd
69 lines
2.2 KiB
GDScript
69 lines
2.2 KiB
GDScript
extends Node3D
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## Earth impostor — from Luna you are always far; show a disc inside far plane.
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@export var real_earth_path: NodePath = ^".."
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@export var surface_path: NodePath = ^"../EarthSurface"
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@export var impostor_mesh_path: NodePath = ^"ImposterSphere"
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@export var switch_distance: float = 150000.0
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@export var visual_distance: float = 120000.0
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@export var real_radius: float = 637100.0
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var _real: Node3D
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var _surface: Node3D
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var _mesh: MeshInstance3D
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var _base_radius: float = 0.5
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func _ready() -> void:
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_real = get_node_or_null(real_earth_path) as Node3D
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_surface = get_node_or_null(surface_path) as Node3D
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_mesh = get_node_or_null(impostor_mesh_path) as MeshInstance3D
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if _mesh and _mesh.mesh is SphereMesh:
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_base_radius = maxf((_mesh.mesh as SphereMesh).radius, 0.5)
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if _mesh:
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_mesh.visible = false
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# Keep YOUR material/texture; only force unshaded so it reads in space
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var src_mat: Material = _mesh.get_active_material(0)
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if src_mat is StandardMaterial3D:
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var mat: StandardMaterial3D = (src_mat as StandardMaterial3D).duplicate()
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mat.shading_mode = BaseMaterial3D.SHADING_MODE_UNSHADED
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_mesh.material_override = mat
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print("EarthImposter ready | real=", _real, " surface=", _surface, " mesh=", _mesh)
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set_process(true)
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func _process(_delta: float) -> void:
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if _real == null or _mesh == null:
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return
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var viewer: Node3D = FloatingOrigin.focus
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if viewer == null or not is_instance_valid(viewer):
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_mesh.visible = false
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return
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var to_body: Vector3 = _real.global_position - viewer.global_position
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var dist: float = to_body.length()
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if dist < 1.0:
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_mesh.visible = false
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return
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# Close approach only: real surface
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if dist < switch_distance:
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_mesh.visible = false
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if _surface:
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_surface.visible = true
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return
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# Far (normal from Luna): impostor on
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# Leave EarthSurface visible until you confirm the disc — then you can hide it
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var dir: Vector3 = to_body / dist
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_mesh.global_position = viewer.global_position + dir * visual_distance
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var visual_radius: float = real_radius * (visual_distance / dist)
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visual_radius = clampf(visual_radius, 8000.0, 150000.0)
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_mesh.scale = Vector3.ONE * (visual_radius / _base_radius)
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_mesh.visible = true
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