def start(self):
self.screen.fill((0, 0, 0))
self.grid = Grid(self.width, self.height)
self.rows_range = range(self.grid.height)
self.cols_range = range(self.grid.width)
# self._random_populated_cells(self.width, self.height)
self._create_r_pentomino(63, 30)
self._create_r_pentomino(63, 60)
def start(self):
self.screen.fill((0, 0, 0))
self.grid = Grid(self.width, self.height)
self.rows_range = range(self.grid.height)
self.cols_range = range(self.grid.width)
# self._random_populated_cells(self.width, self.height)
self._create_r_pentomino(63, 30)
self._create_r_pentomino(63, 60)
def test_correctly_snapshot_ticks_a_3x3_grid_with_centered_cell_and_2_adjacent_cells():
grid = Grid(width=3, height=3)
grid.populate_cells([(0, 0), (0, 1), (1, 0)])
grid.advance_generation()
assert len(grid.matrix) == 3*3
# space at position (1,1) spawned a cell as it has 3 adjancent
assert grid.matrix == [1, 1, 0, 1, 1, 0, 0, 0, 0]
def test_on_a_2x2_grid_populates_some_positions():
grid = Grid(width=2, height=2)
grid.populate_cells([(0, 1), (1, 1)])
assert grid.get_cell(0, 0) == 0
assert grid.get_cell(0, 1) == 1
assert grid.get_cell(1, 0) == 0
assert grid.get_cell(1, 1) == 1
def test_indexes_swap_when_updating_the_linebuffer():
irrelevant_y_coordinate = 1
grid = Grid(width=4, height=3)
grid._update_linebuffer(irrelevant_y_coordinate)
assert grid.linebuffer_index == 0
assert grid.linebuffer_prev_index == 1
grid._update_linebuffer(irrelevant_y_coordinate)
assert grid.linebuffer_index == 1
assert grid.linebuffer_prev_index == 0
grid._update_linebuffer(irrelevant_y_coordinate)
assert grid.linebuffer_index == 0
assert grid.linebuffer_prev_index == 1
def test_fills_current_index_with_y_coordinate_line():
grid = Grid(width=3, height=3)
setup_grid_cells(grid)
# this also works as edge-detection case
grid._update_linebuffer(0)
assert grid.linebuffer[grid.linebuffer_index] == [1, 0, 0]
# the other line should be empty
grid._update_linebuffer(1)
assert grid.linebuffer[grid.linebuffer_index] == [0, 1, 0]
assert grid.linebuffer[grid.linebuffer_prev_index] == [1, 0, 0]
grid._update_linebuffer(2)
assert grid.linebuffer[grid.linebuffer_index] == [0, 0, 1]
assert grid.linebuffer[grid.linebuffer_prev_index] == [0, 1, 0]
def test_its_data_becomes_invalid_if_updates_are_not_y_coordinate_consecutive(
):
grid = Grid(width=3, height=3)
setup_grid_cells(grid)
# all fine so far
grid._update_linebuffer(0)
assert grid.linebuffer[grid.linebuffer_index] == [1, 0, 0]
grid._update_linebuffer(2)
assert grid.linebuffer[grid.linebuffer_index] == [0, 0, 1]
# this'd be the correct value
assert grid.linebuffer[grid.linebuffer_prev_index] != [0, 1, 0]
# but instead has just the swapped old value, returning wrong data
assert grid.linebuffer[grid.linebuffer_prev_index] == [1, 0, 0]
def test_creates_a_new_grid_filled_with_empty_cells():
grid = Grid(width=3, height=3)
for cell in grid.matrix:
assert cell == 0
def test_linebuffer_indexes_start_with_current_1_and_previous_0():
grid = Grid(width=4, height=3)
assert grid.linebuffer_index == 1
assert grid.linebuffer_prev_index == 0
def test_setups_an_NxM_grid_with_width_N_4_and_height_M_3():
grid = Grid(width=4, height=3)
assert len(grid.matrix) == 3*4
def test_on_a_3x3_grid_a_centered_cell_survives_if_has_2_adjacent_cells():
grid = Grid(width=3, height=3)
grid.populate_cells([(1, 1), (0, 1), (1, 2)])
grid.advance_generation()
assert grid.get_cell(1, 1) == 1
def test_on_a_1x1_grid_evolution_calculations_dont_error():
grid = Grid(width=1, height=1)
grid.advance_generation()
assert grid.get_cell(0, 0) == 0
class GameOfLife():
def __init__(self, width, height, fullscreen=False):
self.width = width
self.height = height
self.screen = pygame.display.set_mode((width, height))
self.paused = True
if fullscreen:
pygame.display.toggle_fullscreen()
def start(self):
self.screen.fill((0, 0, 0))
self.grid = Grid(self.width, self.height)
self.rows_range = range(self.grid.height)
self.cols_range = range(self.grid.width)
# self._random_populated_cells(self.width, self.height)
self._create_r_pentomino(63, 30)
self._create_r_pentomino(63, 60)
def run(self):
clock = pygame.time.Clock()
self.screen.fill((0, 0, 0))
self._draw_grid()
pygame.display.flip()
while True:
for event in pygame.event.get():
if event.type == QUIT:
sys.exit()
self._check_keyboard()
if not self.paused:
self._update_grid()
clock.tick(30)
def _draw_grid(self):
for y in self.rows_range:
for x in self.cols_range:
if self.grid.get_cell(x, y) == 1:
self.screen.set_at((x, y), (0, 255, 0))
def _update_grid(self):
self.grid.advance_generation()
self.screen.fill((0, 0, 0))
self._draw_grid()
pygame.display.flip()
def _check_keyboard(self):
key = pygame.key.get_pressed()
if key[K_ESCAPE]:
sys.exit()
elif key[K_SPACE]:
self.paused = False
def _random_populated_cells(self, grid_width, grid_height, num_cells=None):
cells = []
if num_cells is None:
min_cells = grid_width + grid_height - 1
max_cells = ((grid_width - 1) * (grid_height - 1)) // 4
num_cells = random.randint(min_cells, max_cells)
for index in range(num_cells):
cells.append((random.randint(0, grid_width - 1), random.randint(0, grid_height - 1)))
self.grid.populate_cells(cells)
# More patterns here: https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life#Examples_of_patterns
def _create_r_pentomino(self, start_x, start_y):
cells = []
cells.append((start_x + 1, start_y))
cells.append((start_x + 2, start_y))
cells.append((start_x, start_y + 1))
cells.append((start_x + 1, start_y + 1))
cells.append((start_x + 1, start_y + 2))
self.grid.populate_cells(cells)
Populates top-left corner of grid (X means "previous value"):
1 X X
X 1 X
X X 1
"""
cells = []
cells.append((0, 0))
cells.append((1, 1))
cells.append((2, 2))
grid.populate_cells(cells)
with description("Tests related to line buffer optimized grid"):
with context("grid setup"):
with it("linebuffer is created with appropiate width and always 2 lines"):
grid = Grid(width=4, height=3)
expect(len(grid.linebuffer)).to(equal(2))
expect(len(grid.linebuffer[0])).to(equal(grid.width))
with it("linebuffer indexes start with current=1, previous=0"):
grid = Grid(width=4, height=3)
expect(grid.linebuffer_index).to(equal(1))
expect(grid.linebuffer_prev_index).to(equal(0))
with it("when updating the linebuffer, indexes swap"):
irrelevant_y_coordinate = 1
grid = Grid(width=4, height=3)
grid._update_linebuffer(irrelevant_y_coordinate)
expect(grid.linebuffer_index).to(equal(0))
expect(grid.linebuffer_prev_index).to(equal(1))
def test_on_a_1x1_grid_populates_the_position():
grid = Grid(width=1, height=1)
assert grid.get_cell(0, 0) == 0
grid.populate_cells([(0, 0)])
assert grid.get_cell(0, 0) == 1
def test_on_a_3x3_grid_a_topleft_cell_survives_if_has_exactly_2_adjacent_cells():
grid = Grid(width=3, height=3)
grid.populate_cells([(0, 0), (0, 1), (1, 0)])
grid.advance_generation()
assert grid.get_cell(0, 0) == 1
def test_on_a_3x3_grid_a_topleft_cell_dies_if_has_no_adjacent_cells():
grid = Grid(width=3, height=3)
grid.populate_cells([(0, 0)])
grid.advance_generation()
assert grid.get_cell(0, 0) == 0
def test_on_a_2x2_grid_evolution_calculations_dont_error():
grid = Grid(width=2, height=2)
grid.populate_cells([(0, 1)])
grid.advance_generation()
assert grid.get_cell(0, 1) == 0
def test_setups_an_square_3x3_grid():
grid = Grid(width=3, height=3)
assert len(grid.matrix) == 3*3
def test_on_a_3x3_grid_a_centered_cell_dies_if_has_more_than_3_adjacent_cells():
grid = Grid(width=3, height=3)
grid.populate_cells([(1, 0), (1, 1), (2, 0), (2, 1), (2, 2)])
grid.advance_generation()
assert grid.get_cell(1, 1) == 0
def test_on_a_3x3_grid_a_topleft_cell_space_doesnt_reproduces_if_has_less_than_3_adjacent_cells():
grid = Grid(width=3, height=3)
grid.populate_cells([(0, 1), (1, 0)])
grid.advance_generation()
assert grid.get_cell(0, 0) == 0
def test_on_a_3x3_grid_a_centered_cell_space_reproduces_if_has_exactly_3_adjacent_cells():
grid = Grid(width=3, height=3)
grid.populate_cells([(0, 1), (1, 2), (2, 2)])
grid.advance_generation()
assert grid.get_cell(1, 1) == 1
def test_given_a_1x1_grid_a_full_snapshot_tick_returns_another_1x1_grid():
grid = Grid(width=1, height=1)
grid.populate_cells([(0, 0)])
grid.advance_generation()
assert len(grid.matrix) == 1
assert grid.matrix[0] == 0
class GameOfLife():
def __init__(self, width, height, fullscreen=False):
self.width = width
self.height = height
self.screen = pygame.display.set_mode((width, height))
self.paused = True
if fullscreen:
pygame.display.toggle_fullscreen()
def start(self):
self.screen.fill((0, 0, 0))
self.grid = Grid(self.width, self.height)
self.rows_range = range(self.grid.height)
self.cols_range = range(self.grid.width)
# self._random_populated_cells(self.width, self.height)
self._create_r_pentomino(63, 30)
self._create_r_pentomino(63, 60)
def run(self):
clock = pygame.time.Clock()
self.screen.fill((0, 0, 0))
self._draw_grid()
pygame.display.flip()
while self.paused:
for event in pygame.event.get():
if event.type == QUIT:
sys.exit()
self._check_keyboard()
while True:
for event in pygame.event.get():
if event.type == QUIT:
sys.exit()
self._check_keyboard()
self._update_grid()
clock.tick(30)
def _draw_grid(self):
for y in self.rows_range:
for x in self.cols_range:
if self.grid.get_cell(x, y) == 1:
self.screen.set_at((x, y), (0, 255, 0))
def _update_grid(self):
self.grid.advance_generation()
self.screen.fill((0, 0, 0))
self._draw_grid()
pygame.display.flip()
def _check_keyboard(self):
key = pygame.key.get_pressed()
if key[K_ESCAPE]:
sys.exit()
elif key[K_SPACE]:
self.paused = False
def _random_populated_cells(self, grid_width, grid_height, num_cells=None):
cells = []
if num_cells is None:
min_cells = grid_width + grid_height - 1
max_cells = ((grid_width - 1) * (grid_height - 1)) // 4
num_cells = random.randint(min_cells, max_cells)
for index in range(num_cells):
cells.append((random.randint(0, grid_width - 1),
random.randint(0, grid_height - 1)))
self.grid.populate_cells(cells)
# More patterns here: https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life#Examples_of_patterns
def _create_r_pentomino(self, start_x, start_y):
cells = []
cells.append((start_x + 1, start_y))
cells.append((start_x + 2, start_y))
cells.append((start_x, start_y + 1))
cells.append((start_x + 1, start_y + 1))
cells.append((start_x + 1, start_y + 2))
self.grid.populate_cells(cells)
def test_linebuffer_is_created_with_appropiate_width_and_always_2_lines():
grid = Grid(width=4, height=3)
assert len(grid.linebuffer) == 2
assert len(grid.linebuffer[0]) == grid.width