19 lines
811 B
GDScript3
19 lines
811 B
GDScript3
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extends ColorRect
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# Feeds the lunar shader the camera's position split into a CELL INDEX plus
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# a fraction within that cell, rather than a raw world position. See the
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# long note in Starfield.gd for why - identical reasoning, identical split.
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@onready var camera: Camera2D = get_node("../../Camera2D")
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func _process(_delta: float) -> void:
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var viewport_size: Vector2 = get_viewport_rect().size
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var cell_size: float = material.get_shader_parameter("cell_size")
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var p: Vector2 = camera.global_position / cell_size
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var cell: Vector2 = Vector2(floor(p.x), floor(p.y))
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material.set_shader_parameter("camera_cell", cell)
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material.set_shader_parameter("camera_frac", p - cell)
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material.set_shader_parameter("camera_zoom", 1.0 / camera.zoom.x)
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material.set_shader_parameter("viewport_size", viewport_size)
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