89 lines
2.6 KiB
GDScript
89 lines
2.6 KiB
GDScript
extends Node
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## Methods of scaling the game viewport.
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enum ScaleMode {
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## Maintain aspect ratio and scale by highest whole number that will fit within the screen.
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INTEGER,
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## Maintain aspect ratio and scale to fill at least one axis.
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ASPECT,
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## Stretch to fill screen, ignoring aspect ratio.
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STRETCH,
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}
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## The [enum ScaleMode] currently in use.
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@export var scale_mode: ScaleMode = ScaleMode.INTEGER
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@export_group("Internal References")
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## Viewport the game is rendered in.
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@export var viewport: SubViewport
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## Control that holds the viewport. Resized according to [member scale_mode].
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@export var viewport_holder: Control
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## Design/native resolution of the game.
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@onready var resolution: Vector2 = Vector2(
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ProjectSettings.get_setting("display/window/size/viewport_width"),
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ProjectSettings.get_setting("display/window/size/viewport_height")
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)
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@onready var win_sound = $WinSound
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## The currently active scene.
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##
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## Setting this will remove and free the previously active scene if it exists.
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var current_scene: Node:
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set(new_scene):
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# do nothing if already current scene
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if current_scene == new_scene:
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return
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# remove current scene
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if current_scene:
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viewport.remove_child(current_scene)
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current_scene.queue_free()
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# add new scene
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if new_scene.is_inside_tree():
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new_scene.get_parent().remove_child(new_scene)
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viewport.add_child(new_scene)
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current_scene = new_scene
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func _ready() -> void:
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var tree := get_tree()
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await tree.process_frame
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# capture the main scene
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if tree.current_scene != self:
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current_scene = tree.current_scene
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tree.current_scene = self
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# gather screen_overlay references
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for child in tree.root.get_children():
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if child is Control:#and child.is_in_group(&"screen_overlay")
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child.get_parent().remove_child(child)
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viewport_holder.add_child(child)
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child.set_anchors_preset(Control.PRESET_CENTER, false)
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child.size = resolution
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child.pivot_offset = resolution * 0.5
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# set up viewport display
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viewport.size = resolution
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viewport_holder.size = resolution
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viewport_holder.pivot_offset = resolution * 0.5
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_on_window_size_changed()
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tree.root.size_changed.connect(_on_window_size_changed)
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func _on_window_size_changed() -> void:
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# gather resolution information
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var screen_size := Vector2(get_tree().root.size)
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var scale_delta := screen_size / resolution
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# apply scale mode
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match scale_mode:
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ScaleMode.INTEGER:
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var scale = floorf(minf(scale_delta.x, scale_delta.y))
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viewport_holder.scale = Vector2(scale, scale)
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ScaleMode.ASPECT:
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var scale = minf(scale_delta.x, scale_delta.y)
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viewport_holder.scale = Vector2(scale, scale)
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ScaleMode.STRETCH:
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viewport_holder.scale = scale_delta
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