Add UI scaling through menu option

1 files changed, 65 insertions, 0 deletions

diff --git a/game/src/Autoload/GuiScale.gd b/game/src/Autoload/GuiScale.gd
new file mode 100644
index 0000000..d134f5b
--- /dev/null
+++ b/game/src/Autoload/GuiScale.gd
@@ -0,0 +1,65 @@
+extends Node
+
+#the default value
+const error_guiscale : float = 1
+
+@export
+var minimum_guiscale : float = 0.1
+
+const _starting_guiscales : Dictionary = {
+	float(0.5): &"0.5x",
+	float(0.75): &"0.75x",
+	float(1): &"1x",
+	float(1.5): &"1.5x",
+	float(2): &"2x",
+}
+
+var _guiscales: Dictionary
+
+#Similar to Resolution.gd, but we don't bother checking for strings from files
+#and we have floats instead of vector2 integers
+
+func _ready():
+	assert(minimum_guiscale > 0, "Minimum gui scale must be positive")
+	for guiscale_value in _starting_guiscales:
+		add_guiscale(guiscale_value, _starting_guiscales[guiscale_value])
+	assert(not _guiscales.is_empty(), "No valid starting gui scales!")
+
+func has_guiscale(guiscale_value : float) -> bool:
+	return guiscale_value in _guiscales
+	
+func add_guiscale(guiscale_value: float, guiscale_name: StringName=&"") -> bool:
+	if has_guiscale(guiscale_value): return true
+	var scale_dict := { value = guiscale_value }
+	var display_name := "%sx" % [guiscale_value]
+	if not guiscale_name.is_empty():
+		scale_dict.name = guiscale_name
+		#don't need to change the display name
+	scale_dict.display_name = StringName(display_name)
+	if guiscale_value < minimum_guiscale:
+		push_error("GUI scale %s is smaller than the minimum %s" % [scale_dict.display_name,minimum_guiscale])
+		return false
+	_guiscales[guiscale_value] = scale_dict
+	return true
+	
+#returns floats
+func get_guiscale_value_list() -> Array:
+	var list := _guiscales.keys()
+	list.sort_custom(func(a, b): return a > b)
+	return list
+	
+func get_guiscale_display_name(guiscale_value : float) -> StringName:
+	return _guiscales.get(guiscale_value, {display_name = &"unknown gui scale"}).display_name
+
+func get_current_guiscale() -> float:
+	return get_tree().root.content_scale_factor
+	
+func set_guiscale(guiscale:float) -> void:
+	print("New GUI scale: %f" % guiscale)
+	if not has_guiscale(guiscale):
+		push_warning("Setting GUI Scale to non-standard value %sx" % [guiscale])
+	get_tree().root.content_scale_factor = guiscale
+	
+func reset_guiscale() -> void:
+	set_guiscale(get_current_guiscale())
+