add game menu

core/game_menu/arrow_button.gd

@@ -0,0 +1,29 @@
+@tool
+extends Control
+
+class_name ArrowButton
+
+signal on_pressed
+
+@export var image: Texture:
+	set(value):
+		image = value
+		if is_inside_tree() and has_node("%Texture"):
+			$%Texture.texture = image
+
+@export var flip_h: bool = false:
+	set(value):
+		flip_h = value
+		if is_inside_tree() and has_node("%Texture"):
+			if $%Texture != null:
+				$%Texture.flip_h = flip_h
+
+func _ready():
+	if image != null and has_node("%Texture"):
+		$%Texture.texture = image
+		$%Texture.flip_h = flip_h
+		
+
+func _on_gui_input(event: InputEvent) -> void:
+	if event is InputEventMouseButton and event.button_index == MOUSE_BUTTON_LEFT and event.pressed:
+		on_pressed.emit()