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columns_mechanics.py
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columns_mechanics.py
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# Zhiyuan Liu
class InvalidMoveError(Exception):
'''Raised whenever an invalid move is made'''
pass
class Faller:
def __init__(self,fall_command: str):
self._column = int(fall_command[2])
self._first = fall_command[4]
self._second = fall_command[6]
self._last = fall_command[8]
self._f_pos = -3
self._s_pos = -2
self._l_pos = -1
def first_pos(self) -> int:
'''get the first position'''
return self._f_pos
def second_pos(self) -> int:
'''get the second position'''
return self._s_pos
def last_pos(self) -> int:
'''get the position of the lowest one in a faller'''
return self._l_pos
def rotate(self) -> [str]:
'''make the faller's letter change when the user wants it to rotate'''
first = self._last
second = self._first
last = self._second
self._first = first
self._second = second
self._last = last
return [self._first, self._second, self._last]
def left(self) -> int:
'''change the column num of the faller to one less'''
self._column -= 1
return self._column
def right(self) -> int:
'''add one to the faller's column num'''
self._column += 1
return self._column
def column(self) -> int:
'''return the column num of the faller'''
return self._column
def last_pos(self) -> int:
'''return the lowest element's position in a faller'''
return self._l_pos
def change_last_pos(self) -> int:
'''add one to the faller's lowest element's position'''
self._l_pos += 1
return self._l_pos
def change_second_pos(self) -> int:
'''add one to the second position of a faller'''
self._s_pos += 1
return self._s_pos
def change_first_pos(self) -> int:
'''add one to the first position of a faller'''
self._f_pos += 1
return self._f_pos
def first(self) -> str:
'''return the first element in a faller'''
return self._first
def second(self) -> str:
'''return the faller's second element'''
return self._second
def last(self) -> str:
'''return the faller's lowest element'''
return self._last
class ColumnsState:
def __init__(self):
self._columns = []
def current_state(self) -> list:
'''return the current state of the gameboard'''
return self._columns
def empty_new_game(self, rows: int, columns: int) -> None:
'''make a list of gameboard with no user's inputs'''
for row in range(rows):
self._columns.append([])
for col in range(columns):
self._columns[-1].append(' ')
def contents_new_game(self, rows: int, columns: int, contents: list) -> None:
'''return a list of gameboard that has the elements that the user wants'''
self._columns = self.empty_new_game(rows, columns)
for row in range(rows):
for col in range(columns):
self._columns[row][col] = ' ' + contents[row][col] + ' '
def new_faller(self, fall_command: str) -> Faller:
'''create a new faller givin the user's command'''
if int(fall_command[2]) > len(self._columns[0]) or int(fall_command[2]) < 1:
raise InvalidMoveError()
else:
return Faller(fall_command)
def time_passage(self, faller: Faller) -> None:
'''make change to the list of gameboard as the time passes'''
if faller:
self._handle_faller_down(faller)
def rotate(self, faller: Faller) -> None:
'''make change to the list of gameboard as the faller in the list rotates'''
if self._columns[faller.last_pos()][faller.column()-1][0] == '[':
list_of_color = faller.rotate()
first = list_of_color[0]
second = list_of_color[1]
last = list_of_color[2]
if faller.last_pos() >= 0:
self._columns[faller.last_pos()][faller.column()-1] = '[' + last + ']'
if faller.second_pos() >= 0:
self._columns[faller.second_pos()][faller.column()-1] = '[' + second + ']'
if faller.first_pos() == 0:
self._columns[faller.first_pos()][faller.column()-1] = '[' + first + ']'
if faller.first_pos() > 0:
self._columns[faller.first_pos()][faller.column()-1] = '[' + first + ']'
self._columns[faller.first_pos()-1][faller.column()-1] = ' '
def move_right(self, faller: Faller) -> None:
'''change the gameboard as the faller moves to the right'''
f_move = False
s_move = False
l_move = False
if faller.last_pos() >= 0 and faller.column() < (len(self._columns[0])):
if self._columns[faller.last_pos()][faller.column()] == ' ':
l_move = True
if faller.second_pos() < 0:
s_move = l_move
if faller.first_pos() < 0:
f_move = l_move
if faller.second_pos() >= 0 and faller.column() < (len(self._columns[0])):
if self._columns[faller.second_pos()][faller.column()] == ' ':
s_move = True
if faller.first_pos() >= 0 and faller.column() < (len(self._columns[0])):
if self._columns[faller.first_pos()][faller.column()] == ' ':
f_move = True
if l_move and s_move and f_move and self._columns[faller.last_pos()][
faller.column()-1].startswith('['):
column = faller.right()
if faller.last_pos() >= 0:
self._columns[faller.last_pos()][column-1] = '[' + faller.last() + ']'
self._columns[faller.last_pos()][column-2] = ' '
if faller.second_pos() >= 0:
self._columns[faller.second_pos()][column-1] = '[' + faller.second() + ']'
self._columns[faller.second_pos()][column-2] = ' '
if faller.first_pos() == 0:
self._columns[faller.first_pos()][column-1] = '[' + faller.first() + ']'
self._columns[faller.first_pos()][column-2] = ' '
if faller.first_pos() > 0:
self._columns[faller.first_pos()][column-1] = '[' + faller.first() + ']'
self._columns[faller.first_pos()-1][column-1] = ' '
self._columns[faller.first_pos()][column-2] = ' '
def move_left(self, faller: Faller) -> None:
'''change the gameboard as the faller moves to the left'''
f_move = False
s_move = False
l_move = False
if faller.last_pos() >= 0 and faller.column() > 1:
if self._columns[faller.last_pos()][faller.column()-2] == ' ':
l_move = True
if faller.second_pos() < 0:
s_move = l_move
if faller.first_pos() < 0:
f_move = l_move
if faller.second_pos() >= 0 and faller.column() > 1:
if self._columns[faller.second_pos()][faller.column()-2] == ' ':
s_move = True
if faller.first_pos() >= 0 and faller.column() > 1:
if self._columns[faller.first_pos()][faller.column()-2] == ' ':
f_move = True
if l_move and s_move and f_move and self._columns[faller.last_pos()][
faller.column()-1].startswith('['):
column = faller.left()
if faller.last_pos() >= 0:
self._columns[faller.last_pos()][column-1] = '[' + faller.last() + ']'
self._columns[faller.last_pos()][column] = ' '
if faller.second_pos() >= 0:
self._columns[faller.second_pos()][column-1] = '[' + faller.second() + ']'
self._columns[faller.second_pos()][column] = ' '
if faller.first_pos() == 0:
self._columns[faller.first_pos()][column-1] = '[' + faller.first() + ']'
self._columns[faller.first_pos()][column] = ' '
if faller.first_pos() > 0:
self._columns[faller.first_pos()][column-1] = '[' + faller.first() + ']'
self._columns[faller.first_pos()-1][column-1] = ' '
self._columns[faller.first_pos()][column] = ' '
def _handle_faller_down(self, faller: Faller) -> None:
'''
This method will handle everything that could happen to the gameboard
when the user wants the time to pass.
'''
faller_col = faller.column()
faller_last = faller.last()
faller_second = faller.second()
faller_first = faller.first()
next_in_col = faller.last_pos() + 1
if (next_in_col == len(self._columns) or self._columns[
next_in_col][faller_col - 1] != ' ') and self._columns[faller.last_pos()][
faller_col-1].startswith('['):
if faller.last_pos() >= 0:
self._columns[faller.last_pos()][faller_col-1] = '|' + faller_last + '|'
if faller.second_pos() >= 0:
self._columns[faller.second_pos()][faller_col-1] = '|' + faller_second + '|'
if faller.first_pos() >= 0:
self._columns[faller.first_pos()][faller_col-1] = '|' + faller_first + '|'
elif (next_in_col != len(self._columns)) and self._columns[next_in_col][faller_col - 1] == ' ':
faller_last_pos = faller.change_last_pos()
faller_second_pos = faller.change_second_pos()
faller_first_pos = faller.change_first_pos()
if faller_last_pos >= 0:
self._columns[faller_last_pos][faller_col-1] = '[' + faller_last + ']'
if faller_second_pos >= 0:
self._columns[faller_second_pos][faller_col-1] = '[' + faller_second + ']'
if faller_first_pos == 0:
self._columns[faller_first_pos][faller_col-1] = '[' + faller_first + ']'
if faller_first_pos > 0:
self._columns[faller_first_pos][faller_col-1] = '[' + faller_first + ']'
self._columns[faller_first_pos-1][faller_col-1] = ' '
else:
for row in range(len(self._columns)):
for col in range(len(self._columns[0])):
if self._columns[row][col].startswith('|'):
self._columns[row][col] = ' ' + self._columns[row][col][1] + ' '
def game_over(self, faller: Faller) -> bool:
'''This method will check whether the game is over or not'''
over = True
if self._columns[faller.last_pos()][faller.column()-1].startswith('|'):
if faller.first_pos() < 0 or faller.second_pos() < 0:
over = False
return over