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@@ -1,4 +1,3 @@
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-
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extends Control
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# Note for the reader:
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@@ -12,45 +11,91 @@ extends Control
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# action and the node, e.g.:
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# button.connect("pressed", self, "wait_for_input", [ button, action ])
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+# Constants
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+const INPUT_ACTIONS = [ "move_up", "move_down", "move_left", "move_right", "jump" ]
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+const CONFIG_FILE = "user://input.cfg"
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+
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# Member variables
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-var player_actions = [ "move_up", "move_down", "move_left", "move_right", "jump" ]
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var action # To register the action the UI is currently handling
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var button # Button node corresponding to the above action
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+# Load/save input mapping to a config file
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+# Changes done while testing the demo will be persistent, saved to CONFIG_FILE
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+
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+func load_config():
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+ var config = ConfigFile.new()
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+ var err = config.load(CONFIG_FILE)
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+ if err: # Assuming that file is missing, generate default config
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+ for action_name in INPUT_ACTIONS:
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+ var action_list = InputMap.get_action_list(action_name)
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+ # There could be multiple actions in the list, but we save the first one by default
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+ var scancode = OS.get_scancode_string(action_list[0].scancode)
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+ config.set_value("input", action_name, scancode)
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+ config.save(CONFIG_FILE)
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+ else: # ConfigFile was properly loaded, initialize InputMap
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+ for action_name in config.get_section_keys("input"):
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+ # Get the key scancode corresponding to the saved human-readable string
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+ var scancode = OS.find_scancode_from_string(config.get_value("input", action_name))
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+ # Create a new event object based on the saved scancode
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+ var event = InputEventKey.new()
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+ event.scancode = scancode
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+ # Replace old action (key) events by the new one
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+ for old_event in InputMap.get_action_list(action_name):
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+ if old_event is InputEventKey:
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+ InputMap.action_erase_event(action_name, old_event)
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+ InputMap.action_add_event(action_name, event)
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+
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+
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+func save_to_config(section, key, value):
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+ """Helper function to redefine a parameter in the settings file"""
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+ var config = ConfigFile.new()
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+ var err = config.load(CONFIG_FILE)
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+ if err:
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+ print("Error code when loading config file: ", err)
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+ else:
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+ config.set_value(section, key, value)
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+ config.save(CONFIG_FILE)
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+
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+
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+# Input management
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+
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func wait_for_input(action_bind):
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action = action_bind
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# See note at the beginning of the script
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button = get_node("bindings").get_node(action).get_node("Button")
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- get_node("contextual_help").text="Press a key to assign to the '" + action + "' action."
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+ get_node("contextual_help").text = "Press a key to assign to the '" + action + "' action."
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set_process_input(true)
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func _input(event):
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# Handle the first pressed key
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- if (event is InputEventKey):
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+ if event is InputEventKey:
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# Register the event as handled and stop polling
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get_tree().set_input_as_handled()
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set_process_input(false)
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# Reinitialise the contextual help label
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- get_node("contextual_help").text="Click a key binding to reassign it, or press the Cancel action."
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- if (not event.is_action("ui_cancel")):
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+ get_node("contextual_help").text = "Click a key binding to reassign it, or press the Cancel action."
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+ if not event.is_action("ui_cancel"):
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# Display the string corresponding to the pressed key
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- button.text=OS.get_scancode_string(event.scancode)
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+ var scancode = OS.get_scancode_string(event.scancode)
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+ button.text = scancode
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# Start by removing previously key binding(s)
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for old_event in InputMap.get_action_list(action):
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InputMap.action_erase_event(action, old_event)
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# Add the new key binding
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InputMap.action_add_event(action, event)
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+ save_to_config("input", action, scancode)
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func _ready():
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+ # Load config if existing, if not it will be generated with default values
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+ load_config()
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# Initialise each button with the default key binding from InputMap
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- var input_event
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- for action in player_actions:
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+ for action in INPUT_ACTIONS:
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# We assume that the key binding that we want is the first one (0), if there are several
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- input_event = InputMap.get_action_list(action)[0]
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+ var input_event = InputMap.get_action_list(action)[0]
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# See note at the beginning of the script
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var button = get_node("bindings").get_node(action).get_node("Button")
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- button.text=OS.get_scancode_string(input_event.scancode)
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+ button.text = OS.get_scancode_string(input_event.scancode)
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button.connect("pressed", self, "wait_for_input", [action])
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Rémi Verschelde
