Basic Nation Management Screen frameworknation-management-screens

2 files changed, 29 insertions, 2 deletions

diff --git a/game/src/Game/Autoload/Events.gd b/game/src/Game/Autoload/Events.gd
index 4f38f61..091a122 100644
--- a/game/src/Game/Autoload/Events.gd
+++ b/game/src/Game/Autoload/Events.gd
@@ -1,9 +1,11 @@
 ## Events are exclusively for the purpose of handling global signals
 ## This is to reduce "signal bubbling" which is when a signal callback is used to "bubble" the signal callbacks up the scene tree.
-## It does such by providing a global interface of signals that are connected to and emitted by that are garunteed to exist.
+## It does such by providing a global interface of signals that are connected to and emitted by that are guaranteed to exist.
 extends Node
 
-var Options: OptionsEventsObject
+var Options : OptionsEventsObject
+var NationManagementScreens : NationManagementScreensEventsObject
 
 func _init() -> void:
 	Options = OptionsEventsObject.new()
+	NationManagementScreens = NationManagementScreensEventsObject.new()
diff --git a/game/src/Game/Autoload/Events/NationManagementScreens.gd b/game/src/Game/Autoload/Events/NationManagementScreens.gd
new file mode 100644
index 0000000..4bdca6d
--- /dev/null
+++ b/game/src/Game/Autoload/Events/NationManagementScreens.gd
@@ -0,0 +1,25 @@
+class_name NationManagementScreensEventsObject
+extends RefCounted
+
+signal update_active_nation_management_screen(screen : NationManagement.Screen)
+
+var _current_screen : NationManagement.Screen = NationManagement.Screen.NONE
+
+# Set the current nation management screen. This emits an update signal to force
+# the argument screen to update, even if it was already the current screen.
+# Used by miscellaneous screen opening buttons (e.g. in province overview panel)
+# and by the close and toggle functions below.
+func open_nation_management_screen(screen : NationManagement.Screen) -> void:
+	_current_screen = screen
+	update_active_nation_management_screen.emit(_current_screen)
+
+# Close the screen if it is already open. Used for screens' close buttons.
+func close_nation_management_screen(screen : NationManagement.Screen) -> void:
+	if screen == _current_screen:
+		open_nation_management_screen(NationManagement.Screen.NONE)
+
+# Either switch to the screen or close it if it is already open. Used for topbar's buttons.
+func toggle_nation_management_screen(screen : NationManagement.Screen) -> void:
+	if screen == _current_screen:
+		screen = NationManagement.Screen.NONE
+	open_nation_management_screen(screen)