class_name InputSetup
extends RefCounted
## Registers the game's input actions in code, so that project.godot holds no
## serialized input events. Keys are physical positions, so WASD stays in
## place on German keyboards too.


static func install() -> void:
	_add_keys("move_up", [KEY_W, KEY_UP])
	_add_keys("move_down", [KEY_S, KEY_DOWN])
	_add_keys("move_left", [KEY_A, KEY_LEFT])
	_add_keys("move_right", [KEY_D, KEY_RIGHT])
	_add_keys("save_game", [KEY_F5])
	_add_keys("load_game", [KEY_F9])
	_add_keys("toggle_pause", [KEY_ESCAPE])
	_add_keys("next_style", [KEY_F2])
	_add_keys("back", [KEY_ESCAPE])
	_add_keys("style_1", [KEY_1])
	_add_keys("style_2", [KEY_2])
	_add_keys("style_3", [KEY_3])
	_add_mouse_button("dig", MOUSE_BUTTON_LEFT)


static func _add_keys(action: StringName, keys: Array[Key]) -> void:
	if InputMap.has_action(action):
		return
	InputMap.add_action(action)
	for key in keys:
		var event := InputEventKey.new()
		event.physical_keycode = key
		InputMap.action_add_event(action, event)


static func _add_mouse_button(action: StringName, button: MouseButton) -> void:
	if InputMap.has_action(action):
		return
	InputMap.add_action(action)
	var event := InputEventMouseButton.new()
	event.button_index = button
	InputMap.action_add_event(action, event)