def create_widgets(self):
"""Fills the frame with various buttons."""
# Fill grid (dictionary) with cell buttons.
grid = {}
for i in range(BOARDSIZE):
for j in range(BOARDSIZE):
grid[(i, j)] = Cell(False)
cell_btn = Button(self, text="", relief=GROOVE, width=2)
cell_btn.bind("<Button-1>", self.click_cell_btn)
cell_btn.grid(row=i, column=j)
# Store buttons and their coordinates in a dictionary.
self.cell_btns[i, j] = cell_btn
# Initialize Board with dead cells.
self.board = Board(grid, BOARDSIZE)
# Place error label.
self.error_lbl = Label(self, text="", foreground="red")
self.error_lbl.grid(columnspan=15, column=2, row=(BOARDSIZE + 1))
# Place reset button.
reset_btn = Button(self, text="Reset", command=self.click_reset_btn)
reset_btn.grid(columnspan=2, pady=10, column=5, row=(BOARDSIZE + 2))
# Place load file button.
loadfile_btn = Button(self, text="Load File...", command=self.click_loadfile_btn)
loadfile_btn.grid(columnspan=4, column=4, row=(BOARDSIZE + 3))
# Place generation step button.
step_btn = Button(self, text="Step for one Generation", command=self.click_step_btn)
step_btn.grid(columnspan=6, column=10, row=(BOARDSIZE + 2))
# Place save file button.
savefile_btn = Button(self, text="Save to File...", command=self.click_savefile_btn)
savefile_btn.grid(columnspan=4, column=10, row=(BOARDSIZE + 3))
# Place number of generations label.
num_of_gens_lbl = Label(self, text="# of Generations:")
num_of_gens_lbl.grid(columnspan=4, column=4, row=(BOARDSIZE + 4))
# Place number of generations entry box.
self.counter = StringVar(value="<#>")
self.num_of_gens_box = Entry(self, width=4, textvariable=self.counter)
self.num_of_gens_box.grid(columnspan=4, column=7, row=(BOARDSIZE + 4))
# Place go button for multiple generation advancement.
go_btn = Button(self, text="Go!", command=self.click_go_btn)
go_btn.grid(columnspan=2, pady=10, column=10, row=(BOARDSIZE + 4))
def click_step_btn(self):
"""Registers step_btn clicks
Checks whether each cell on the Board will live in the "next
generation" based on Board.would_cell_live(). Creates new Board
filled with next generation Cells and displays the new Board.
"""
# Clear any previous error messages on action.
self.clear_error_lbl()
# Need to store future cell states in new dictionary so as not to base
# would_cell_live on updated values during iterations.
new_board = {}
for i in range(BOARDSIZE):
for j in range(BOARDSIZE):
if self.board.would_cell_live(i, j):
new_board[(i, j)] = Cell(True)
self.cell_btns[(i, j)].configure(text="X", background="medium sea green")
else:
new_board[(i, j)] = Cell(False)
self.cell_btns[(i, j)].configure(text="", background="SystemButtonFace")
# Construct new board reflecting new generation of cells.
self.board = Board(new_board, BOARDSIZE)
class GameFrame (Frame):
"""GUI representation of Game of Life."""
def __init__(self, parent):
"""Initialize frame."""
# Initialize parent Frame.
Frame.__init__(self, parent)
self.cell_btns = {}
self.grid()
self.create_widgets()
def create_widgets(self):
"""Fills the frame with various buttons."""
# Fill grid (dictionary) with cell buttons.
grid = {}
for i in range(BOARDSIZE):
for j in range(BOARDSIZE):
grid[(i, j)] = Cell(False)
cell_btn = Button(self, text="", relief=GROOVE, width=2)
cell_btn.bind("<Button-1>", self.click_cell_btn)
cell_btn.grid(row=i, column=j)
# Store buttons and their coordinates in a dictionary.
self.cell_btns[i, j] = cell_btn
# Initialize Board with dead cells.
self.board = Board(grid, BOARDSIZE)
# Place error label.
self.error_lbl = Label(self, text="", foreground="red")
self.error_lbl.grid(columnspan=15, column=2, row=(BOARDSIZE + 1))
# Place reset button.
reset_btn = Button(self, text="Reset", command=self.click_reset_btn)
reset_btn.grid(columnspan=2, pady=10, column=5, row=(BOARDSIZE + 2))
# Place load file button.
loadfile_btn = Button(self, text="Load File...", command=self.click_loadfile_btn)
loadfile_btn.grid(columnspan=4, column=4, row=(BOARDSIZE + 3))
# Place generation step button.
step_btn = Button(self, text="Step for one Generation", command=self.click_step_btn)
step_btn.grid(columnspan=6, column=10, row=(BOARDSIZE + 2))
# Place save file button.
savefile_btn = Button(self, text="Save to File...", command=self.click_savefile_btn)
savefile_btn.grid(columnspan=4, column=10, row=(BOARDSIZE + 3))
# Place number of generations label.
num_of_gens_lbl = Label(self, text="# of Generations:")
num_of_gens_lbl.grid(columnspan=4, column=4, row=(BOARDSIZE + 4))
# Place number of generations entry box.
self.counter = StringVar(value="<#>")
self.num_of_gens_box = Entry(self, width=4, textvariable=self.counter)
self.num_of_gens_box.grid(columnspan=4, column=7, row=(BOARDSIZE + 4))
# Place go button for multiple generation advancement.
go_btn = Button(self, text="Go!", command=self.click_go_btn)
go_btn.grid(columnspan=2, pady=10, column=10, row=(BOARDSIZE + 4))
def click_cell_btn(self, event):
"""Registers a right-mouse click on a particular cell button
Registers a right-mouse click on a particular cell button and
alternates the cell's internal and displayed states.
"""
# Clear any previous error messages on action.
self.clear_error_lbl()
cell = event.widget
# Store grid coordinates (dictionary)
info = cell.grid_info()
# If cell is alive, kill it and update display...
if cell["text"] == "X":
self.board.set_cell(Cell(False), int(info["row"]), int(info["column"]))
cell.configure(text="", background="SystemButtonFace")
# ...otherwise set cell to alive and update display.
else:
self.board.set_cell(Cell(True), int(info["row"]), int(info["column"]))
cell.configure(text="X", background="medium sea green")
def click_reset_btn(self):
"""Registers reset_btn clicks
Resets the board to all False (dead) cells.
"""
# Clear any previous error messages on action.
self.clear_error_lbl()
for i in range(BOARDSIZE):
for j in range(BOARDSIZE):
self.board.set_cell(Cell(False), i, j)
self.cell_btns[(i, j)].configure(text="", background="SystemButtonFace")
def click_loadfile_btn(self):
"""Registers loadfile_btn clicks
Prompts user for file and displays reads contents into internal
board and displays cell states.
"""
# Clear any previous error messages on action.
self.clear_error_lbl()
f = askopenfile(filetypes=[("TXT Files", "*.txt")], mode="rU")
read = f.readlines()
# Pass list to Validation object. Returns True if valid, False otherwise.
if not Validation(read).validate_lines():
self.error_lbl.config(text="Invalid file.")
return
# File is valid. Sore in 2-dim list representing board.
grid = []
for i in range (len(read)):
lines = read[i].rstrip()
grid.append(list(lines))
f.close()
# This block determines what type of Cell to place based on file text
for i in range(BOARDSIZE):
for j in range(BOARDSIZE):
# Swap "X" with living Cell object and update display.
if grid[i][j] == 'X':
self.board.set_cell(Cell(True), i, j)
self.cell_btns[(i, j)].configure(text="X", background="medium sea green")
# Swap "." with dead Cell object and update display.
else:
self.board.set_cell(Cell(False), i, j)
self.cell_btns[(i, j)].configure(text="", background="SystemButtonFace")
def click_savefile_btn(self):
"""Registers savefile_btn clicks
Prompts user for filename and writes internal Board to said file.
"""
f = open(asksaveasfilename(filetypes=[("TXT Files", "*.txt")], defaultextension=".txt"), "w")
build_string = ""
for i in range(BOARDSIZE):
if i > 0:
build_string += "\n"
for j in range(BOARDSIZE):
build_string += (str(self.board.get_cell(i, j)))
# Last character of last line must be "\n".
build_string += "\n"
f.writelines(build_string)
f.close()
def click_step_btn(self):
"""Registers step_btn clicks
Checks whether each cell on the Board will live in the "next
generation" based on Board.would_cell_live(). Creates new Board
filled with next generation Cells and displays the new Board.
"""
# Clear any previous error messages on action.
self.clear_error_lbl()
# Need to store future cell states in new dictionary so as not to base
# would_cell_live on updated values during iterations.
new_board = {}
for i in range(BOARDSIZE):
for j in range(BOARDSIZE):
if self.board.would_cell_live(i, j):
new_board[(i, j)] = Cell(True)
self.cell_btns[(i, j)].configure(text="X", background="medium sea green")
else:
new_board[(i, j)] = Cell(False)
self.cell_btns[(i, j)].configure(text="", background="SystemButtonFace")
# Construct new board reflecting new generation of cells.
self.board = Board(new_board, BOARDSIZE)
def click_go_btn(self):
"""Registers go_btn clicks
Executes the click_step_btn method a number of times equal to
self.counter value entered in self.num_of_gens_box. This means
the cells/board iterate through the number of next generations
provided by the user.
"""
# Clear any previous error messages on action.
self.clear_error_lbl()
try:
# Get the number of iterations to execute.
count = int(self.counter.get())
except ValueError as error:
self.error_lbl.config(text=error)
# Input is valid.
else:
self.clear_error_lbl()
while count > 0:
count -= 1
self.click_step_btn()
# Decrement displayed counter in self.num_of_gens_box.
self.counter.set(str(count))
# Flush buffer to show countdown.
self.master._root().update_idletasks()
def clear_error_lbl(self):
self.error_lbl.config(text="")
