Tetris#
tetris.py#
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Tetris
Tetris clone, with some ideas from silvasur's code:
https://gist.github.com/silvasur/565419/d9de6a84e7da000797ac681976442073045c74a4
If Python and Arcade are installed, this example can be run from the command line with:
python -m arcade.examples.tetris
"""
# flake8: noqa: E241
import arcade
import random
import PIL
# Set how many rows and columns we will have
ROW_COUNT = 24
COLUMN_COUNT = 10
# This sets the WIDTH and HEIGHT of each grid location
WIDTH = 30
HEIGHT = 30
# This sets the margin between each cell
# and on the edges of the screen.
MARGIN = 5
# Do the math to figure out our screen dimensions
SCREEN_WIDTH = (WIDTH + MARGIN) * COLUMN_COUNT + MARGIN
SCREEN_HEIGHT = (HEIGHT + MARGIN) * ROW_COUNT + MARGIN
SCREEN_TITLE = "Tetris"
colors = [
(0, 0, 0, 255),
(255, 0, 0, 255),
(0, 150, 0, 255),
(0, 0, 255, 255),
(255, 120, 0, 255),
(255, 255, 0, 255),
(180, 0, 255, 255),
(0, 220, 220, 255)
]
# Define the shapes of the single parts
tetris_shapes = [
[[1, 1, 1],
[0, 1, 0]],
[[0, 2, 2],
[2, 2, 0]],
[[3, 3, 0],
[0, 3, 3]],
[[4, 0, 0],
[4, 4, 4]],
[[0, 0, 5],
[5, 5, 5]],
[[6, 6, 6, 6]],
[[7, 7],
[7, 7]]
]
def create_textures():
""" Create a list of images for sprites based on the global colors. """
new_textures = []
for color in colors:
# noinspection PyUnresolvedReferences
image = PIL.Image.new('RGBA', (WIDTH, HEIGHT), color)
new_textures.append(arcade.Texture(str(color), image=image))
return new_textures
texture_list = create_textures()
def rotate_counterclockwise(shape):
""" Rotates a matrix clockwise """
return [[shape[y][x] for y in range(len(shape))]
for x in range(len(shape[0]) - 1, -1, -1)]
def check_collision(board, shape, offset):
"""
See if the matrix stored in the shape will intersect anything
on the board based on the offset. Offset is an (x, y) coordinate.
"""
off_x, off_y = offset
for cy, row in enumerate(shape):
for cx, cell in enumerate(row):
if cell and board[cy + off_y][cx + off_x]:
return True
return False
def remove_row(board, row):
""" Remove a row from the board, add a blank row on top. """
del board[row]
return [[0 for _ in range(COLUMN_COUNT)]] + board
def join_matrixes(matrix_1, matrix_2, matrix_2_offset):
""" Copy matrix 2 onto matrix 1 based on the passed in x, y offset coordinate """
offset_x, offset_y = matrix_2_offset
for cy, row in enumerate(matrix_2):
for cx, val in enumerate(row):
matrix_1[cy + offset_y - 1][cx + offset_x] += val
return matrix_1
def new_board():
""" Create a grid of 0's. Add 1's to the bottom for easier collision detection. """
# Create the main board of 0's
board = [[0 for _x in range(COLUMN_COUNT)] for _y in range(ROW_COUNT)]
# Add a bottom border of 1's
board += [[1 for _x in range(COLUMN_COUNT)]]
return board
class MyGame(arcade.Window):
""" Main application class. """
def __init__(self, width, height, title):
""" Set up the application. """
super().__init__(width, height, title)
arcade.set_background_color(arcade.color.WHITE)
self.board = None
self.frame_count = 0
self.game_over = False
self.paused = False
self.board_sprite_list = None
self.stone = None
self.stone_x = 0
self.stone_y = 0
def new_stone(self):
"""
Randomly grab a new stone and set the stone location to the top.
If we immediately collide, then game-over.
"""
self.stone = random.choice(tetris_shapes)
self.stone_x = int(COLUMN_COUNT / 2 - len(self.stone[0]) / 2)
self.stone_y = 0
if check_collision(self.board, self.stone, (self.stone_x, self.stone_y)):
self.game_over = True
def setup(self):
self.board = new_board()
self.board_sprite_list = arcade.SpriteList()
for row in range(len(self.board)):
for column in range(len(self.board[0])):
sprite = arcade.Sprite()
for texture in texture_list:
sprite.append_texture(texture)
sprite.set_texture(0)
sprite.center_x = (MARGIN + WIDTH) * column + MARGIN + WIDTH // 2
sprite.center_y = SCREEN_HEIGHT - (MARGIN + HEIGHT) * row + MARGIN + HEIGHT // 2
self.board_sprite_list.append(sprite)
self.new_stone()
self.update_board()
def drop(self):
"""
Drop the stone down one place.
Check for collision.
If collided, then
join matrixes
Check for rows we can remove
Update sprite list with stones
Create a new stone
"""
if not self.game_over and not self.paused:
self.stone_y += 1
if check_collision(self.board, self.stone, (self.stone_x, self.stone_y)):
self.board = join_matrixes(self.board, self.stone, (self.stone_x, self.stone_y))
while True:
for i, row in enumerate(self.board[:-1]):
if 0 not in row:
self.board = remove_row(self.board, i)
break
else:
break
self.update_board()
self.new_stone()
def rotate_stone(self):
""" Rotate the stone, check collision. """
if not self.game_over and not self.paused:
new_stone = rotate_counterclockwise(self.stone)
if self.stone_x + len(new_stone[0]) >= COLUMN_COUNT:
self.stone_x = COLUMN_COUNT - len(new_stone[0])
if not check_collision(self.board, new_stone, (self.stone_x, self.stone_y)):
self.stone = new_stone
def on_update(self, dt):
""" Update, drop stone if warrented """
self.frame_count += 1
if self.frame_count % 10 == 0:
self.drop()
def move(self, delta_x):
""" Move the stone back and forth based on delta x. """
if not self.game_over and not self.paused:
new_x = self.stone_x + delta_x
if new_x < 0:
new_x = 0
if new_x > COLUMN_COUNT - len(self.stone[0]):
new_x = COLUMN_COUNT - len(self.stone[0])
if not check_collision(self.board, self.stone, (new_x, self.stone_y)):
self.stone_x = new_x
def on_key_press(self, key, modifiers):
"""
Handle user key presses
User goes left, move -1
User goes right, move 1
Rotate stone,
or drop down
"""
if key == arcade.key.LEFT:
self.move(-1)
elif key == arcade.key.RIGHT:
self.move(1)
elif key == arcade.key.UP:
self.rotate_stone()
elif key == arcade.key.DOWN:
self.drop()
# noinspection PyMethodMayBeStatic
def draw_grid(self, grid, offset_x, offset_y):
"""
Draw the grid. Used to draw the falling stones. The board is drawn
by the sprite list.
"""
# Draw the grid
for row in range(len(grid)):
for column in range(len(grid[0])):
# Figure out what color to draw the box
if grid[row][column]:
color = colors[grid[row][column]]
# Do the math to figure out where the box is
x = (MARGIN + WIDTH) * (column + offset_x) + MARGIN + WIDTH // 2
y = SCREEN_HEIGHT - (MARGIN + HEIGHT) * (row + offset_y) + MARGIN + HEIGHT // 2
# Draw the box
arcade.draw_rectangle_filled(x, y, WIDTH, HEIGHT, color)
def update_board(self):
"""
Update the sprite list to reflect the contents of the 2d grid
"""
for row in range(len(self.board)):
for column in range(len(self.board[0])):
v = self.board[row][column]
i = row * COLUMN_COUNT + column
self.board_sprite_list[i].set_texture(v)
def on_draw(self):
""" Render the screen. """
# This command has to happen before we start drawing
self.clear()
self.board_sprite_list.draw()
self.draw_grid(self.stone, self.stone_x, self.stone_y)
def main():
""" Create the game window, setup, run """
my_game = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
my_game.setup()
arcade.run()
if __name__ == "__main__":
main()
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