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main.py
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main.py
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from kivy.app import App
from kivy.uix.widget import Widget
from kivy.graphics import BorderImage, Color
from kivy.core.window import Window, Keyboard
from kivy.utils import get_color_from_hex
from kivy.properties import ListProperty, NumericProperty
import random
from kivy.animation import Animation
from kivy.vector import Vector
spacing = 15
key_vectors = {Keyboard.keycodes['up']: (0, 1), Keyboard.keycodes['right']: (1, 0), Keyboard.keycodes['down']: (0, -1), Keyboard.keycodes['left']: (-1, 0)}
colors = ['EEE4DA', 'EDE0C8', 'F2B179', 'F59563', 'F67C5F', 'F65E3B', 'EDCF72', 'EDCC61', 'EDC850', 'EDC53F', 'EDC22E']
tile_colors = {2**i: color for i, color in enumerate(colors, start=1)}
def all_cells(flip_x=False, flip_y=False):
for x in (reversed(range(4)) if flip_x else range(4)):
for y in (reversed(range(4)) if flip_y else range(4)):
yield (x, y)
class Tile(Widget):
font_size = NumericProperty(24)
number = NumericProperty(2)
color = ListProperty(get_color_from_hex(tile_colors[2]))
number_color = ListProperty(get_color_from_hex('776E65'))
def __init__(self, number=2, **kwargs):
super(Tile, self).__init__(**kwargs)
self.font_size = 0.5 * self.width
self.number = number
self.update_colors()
def update_colors(self):
self.color = get_color_from_hex(tile_colors[self.number])
if self.number > 4:
self.number_color = get_color_from_hex('F9F6F2')
def resize(self, pos, size):
self.pos = pos
self.size = size
self.font_size = 0.5 * self.width
class Board(Widget):
b = None
moving = False
def valid_cell(self, board_x, board_y):
return (board_x >= 0 and board_y >= 0 and board_x <= 3 and board_y <= 3)
def can_move(self, board_x, board_y):
return (self.valid_cell(board_x, board_y) and self.b[board_x][board_y] is None)
def is_deadlocked(self):
for x, y in all_cells():
if self.b[x][y] is None:
return False
number = self.b[x][y].number
if self.can_merge(x + 1, y, number) or self.can_merge(x, y + 1, number):
return False
return True
def new_tile(self, *args):
empty_cells = [(x, y) for x, y in all_cells() if self.b[x][y] is None]
x, y = random.choice(empty_cells)
tile = Tile(pos=self.cell_pos(x, y), size=self.cell_size)
self.b[x][y] = tile
self.add_widget(tile)
if len(empty_cells) == 1 and self.is_deadlocked():
print('Game Over(board is deadlocked)')
self.moving = False
def reset(self):
self.b = [[None for i in range(4)] for j in range(4)]
self.new_tile()
self.new_tile()
def __init__(self, **kwargs):
super(Board, self).__init__(**kwargs)
self.resize()
def cell_pos(self, board_x, board_y):
return (self.x + spacing + board_x * (self.cell_size[0] + spacing), self.y + spacing + board_y * (self.cell_size[1] + spacing))
def can_merge(self, board_x, board_y, number):
return (self.valid_cell(board_x, board_y) and self.b[board_x][board_y] is not None and self.b[board_x][board_y].number == number)
def move(self, dir_x, dir_y):
if self.moving:
return
for board_x, board_y in all_cells(dir_x > 0, dir_y > 0):
tile = self.b[board_x][board_y]
if not tile:
continue
x, y = board_x, board_y
while self.can_move(x + dir_x, y + dir_y):
self.b[x][y] = None
x += dir_x
y += dir_y
self.b[x][y] = tile
if self.can_merge(x + dir_x, y + dir_y, tile.number):
self.b[x][y] = None
x += dir_x
y += dir_y
self.remove_widget(self.b[x][y])
self.b[x][y] = tile
tile.number *= 2
if tile.number == 2048:
print('You win the game.')
tile.update_colors()
if x == board_x and y == board_y:
continue
anim = Animation(pos=self.cell_pos(x, y), duration=0.25, transition='linear')
if not self.moving:
anim.on_complete = self.new_tile
self.moving = True
anim.start(tile)
def resize(self, *args):
self.cell_size = (.25 * (self.width - 5 * spacing),) * 2
self.canvas.before.clear()
with self.canvas.before:
BorderImage(pos=self.pos, size=self.size, source='board.png')
Color(*get_color_from_hex('ccc0b4'))
for board_x, board_y in all_cells():
BorderImage(pos=self.cell_pos(board_x, board_y), size=self.cell_size, source='cell.png')
if not self.b:
return
for board_x, board_y in all_cells():
tile = self.b[board_x][board_y]
if tile:
tile.resize(pos=self.cell_pos(board_x, board_y), size=self.cell_size)
on_pos = resize
on_size = resize
def on_key_down(self, window, key, *args):
if key in key_vectors:
self.move(*key_vectors[key])
def on_touch_up(self, touch):
v = Vector(touch.pos) - Vector(touch.opos)
if v.length < 20:
return
if abs(v.x) > abs(v.y):
v.y = 0
else:
v.x = 0
self.move(*v.normalize())
class GameApp(App):
def on_start(self):
board = self.root.ids.board
board.reset()
Window.bind(on_key_down=board.on_key_down)
if __name__ == '__main__':
Window.clearcolor = get_color_from_hex('faf8ef')
GameApp().run()