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import re
from font import Font
from game import Game, GameSprite
from sprite import Sprite
class MenuItem(GameSprite):
"""A selectable item in a menu"""
def __init__(self, game: Game, text, callback):
"""Initialise the item
:param game: The game which this belongs to
:type game: Game
:param text: Text to display for this item
:param callback: function to call when this item is selected
"""
image = Font.load_text(game.texture_factory, text)
self.text = text
self.callback = callback
super().__init__(game, image)
def set_text(self, text):
"""Update the text of an entry
:param text:
"""
self.text = text
image = Font.load_text(self.game.texture_factory, text)
self.set_image(image)
class Menu():
"""Menu object with selectable entries"""
def __init__(self, game: Game, title) -> None:
"""Initialise the menu object
:param game: The game which this belongs to
:type game: Game
:param title: The title of this menu
"""
self.game = game
self.title = title
self.padding = 5
self.game.inputs.add_keypress_handler(self.on_key)
self.menu_items = []
self.selection = 0
carret_image = Font.load_text(game.texture_factory, ">")
self.carret = GameSprite(self.game, carret_image)
title_image = Font.load_text(game.texture_factory, title)
position = ((self.game.w - len(title)*Font.FONT_WIDTH)//2, 5*2)
self.title = GameSprite(self.game, title_image)
self.title.set_pos(position)
self.hidden = True
self.alpha = 0
def on_key(self, _):
"""Handle Key press events
:param event: The key press event to handle
"""
if not self.hidden:
inp = self.game.inputs
if inp.k_down or inp.k_right:
self.selection += 1
if inp.k_up or inp.k_left:
self.selection -= 1
self.selection %= len(self.menu_items)
self.update_carret()
if inp.k_action:
self.menu_items[self.selection].callback()
return True
return False
def update_carret(self):
"""Move the carret to the correct location"""
selected = self.menu_items[self.selection]
x = selected.x - Font.FONT_SIZE
y = selected.y
self.carret.set_pos((x, y))
def arrange_items(self):
"""Move the menu items to their correct positions"""
cy = self.game.h // 2
max_height = sum(item.h for item in self.menu_items
) + self.padding*(len(self.menu_items)-1)
top = cy - max_height//2
y = top
for item in self.menu_items:
item_x = (self.game.w - item.w) // 2
item_y = y
y += item.h + self.padding
item.set_pos((item_x, item_y))
self.update_carret()
def add_item(self, text: str, callback, index=-1):
"""Add a menu item
:param text: Label of this item
:type text: str
:param callback: Function to call when it is selected
:param index: Where to insert this item
"""
if index == -1:
index = len(self.menu_items)
self.menu_items.insert(index, MenuItem(self.game, text, callback))
self.arrange_items()
def show(self):
"""Make this object visible"""
if self.hidden:
for m in self.menu_items:
m.show()
m.send_to_front()
self.carret.show()
self.carret.send_to_front()
self.title.show()
self.title.send_to_front()
self.hidden = False
def hide(self):
"""Make this object invisible"""
if not self.hidden:
for m in self.menu_items:
m.hide()
self.carret.hide()
self.title.hide()
self.hidden = True
def tick(self):
"""Update this object"""
self.alpha += 1
if not self.hidden:
if (self.alpha//15) % 2 == 0:
self.carret.show()
else:
self.carret.hide()
else:
self.carret.hide()
def has_item(self, text):
"""Return true if matching item is found
:param text: Label text to match
"""
for entry in self.menu_items:
if entry.text == text:
return True
return False
def get_item(self, regex) -> MenuItem:
"""Return an item that is matched
:param regex: regular expression to match item text to
:rtype: MenuItem
"""
for entry in self.menu_items:
if re.match(regex, entry.text):
return entry
return self.menu_items[0]
def edit_item(self, regex, new_text):
"""Edit the text of a menu item
:param regex: Regular expression to use to match the item's text to
:param new_text: Text to replace to
"""
for entry in self.menu_items:
if re.match(regex, entry.text):
entry.set_text(new_text)
self.arrange_items()
def del_item(self, text):
"""Remove an item
:param text: Label text to match
"""
for entry in self.menu_items:
if entry.text == text:
entry.destroy()
self.menu_items = Sprite.remove_destroyed(self.menu_items)
self.arrange_items()
return False
class KeybindsMenu(Menu):
"""A menu for selecting keybinds on"""
def __init__(self, game: Game, title):
"""Initialise the menu
:param game: The game which this belongs to
:type game: Game
:param title: The title of this menu
"""
super().__init__(game, title)
self.key_selecting = ""
image = Font.load_text(game.texture_factory, "press any key")
self.press_key_sprite = GameSprite(self.game, image)
self.press_key_sprite.set_pos(
((self.game.w - self.press_key_sprite.w) // 2, self.game.h // 2))
def on_key(self, event):
"""Handle Key press events
:param event: The key press event to handle
"""
if self.key_selecting:
key = event.keysym
self.set_keybind(self.key_selecting, key)
self.press_key_sprite.hide()
self.show()
return True
return super().on_key(event)
def set_keybind(self, name, key):
"""set_keybind.
:param name:
:param key:
"""
setattr(self.game.inputs.settings, self.key_selecting, key)
self.game.inputs.settings.save_inputs()
self.key_selecting = ""
self.edit_item(f"{name}\\s*<.*>", self.get_label(name, key))
def select_keybind(self, keyname):
"""Allow the user to press a key to decide their keybind
:param keyname:
"""
self.hide()
self.press_key_sprite.show()
self.key_selecting = keyname
def get_set_keybind(self, keyname):
"""Return a function that sets the keybind of a particular keyname
:param keyname:
"""
return lambda: self.select_keybind(keyname)
def get_label(self, name, value):
"""Get a label for a keybind item
:param name:
:param value:
"""
available_width = (self.game.w - Font.FONT_SIZE*2) // Font.FONT_WIDTH
num_spaces = available_width - (len(name) + len(value) + 2) - 1
spaces = " " * num_spaces
return f"{name} {spaces}<{value}>"
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