def drawMower(x, y, direction):
bext.fg('red')
if direction == 'right':
mowerText = MOWER_RIGHT
elif direction == 'left':
mowerText = MOWER_LEFT
for i in range(MOWER_LEN):
if 0 <= mowerx + i < WIDTH:
bext.goto(x + i, mowery)
print(mowerText[i], end='')
def drawMower(mowerx, mowery, direction):
"""Draw the lawn mower with its left edge at mowerx, mowery."""
bext.fg('red')
if direction == 'right':
mowerText = MOWER_RIGHT
elif direction == 'left':
mowerText = MOWER_LEFT
for i in range(MOWER_LEN):
if 0 <= mowerx + i < WIDTH:
bext.goto(mowerx + i, mowery)
print(mowerText[i], end='')
def drawLinesBetweenPoints(points, character):
"""Prints a line of characters between the specified points."""
for i, point in enumerate(points):
pointA = point
if i == len(points) - 1:
# The last point draws a line to the first point:
pointB = points[0]
else:
# Draw the line to the next point:
pointB = points[i + 1]
# Loop over every x, y point from pointA to pointB:
for x, y in line(pointA[X], pointA[Y], pointB[X], pointB[Y]):
bext.goto(x, y)
print(character, end='')
def displayForest(forest):
"""Display the forest data structure on the screen."""
bext.goto(0, 0)
for y in range(forest['height']):
for x in range(forest['width']):
if forest[(x, y)] == TREE:
bext.fg('green')
print(TREE, end='')
elif forest[(x, y)] == FIRE:
bext.fg('red')
print(FIRE, end='')
elif forest[(x, y)] == EMPTY:
print(EMPTY, end='')
print()
bext.fg('reset') # Use the default font color.
print('Grow chance: {}% '.format(GROW_CHANCE * 100), end='')
print('Lightning chance: {}% '.format(FIRE_CHANCE * 100), end='')
print('Press Ctrl-C to quit.')
def main():
# Generate snake data structures:
snakes = []
for i in range(NUMBER_OF_SNAKES):
snakes.append(Snake())
bext.clear()
while True: # Main simulation loop.
# Draw quit message.
bext.fg('white')
bext.goto(0, 0)
print('Ctrl-C to quit.', end='')
for snake in snakes:
snake.display()
for snake in snakes:
snake.moveRandom()
sys.stdout.flush()
time.sleep(PAUSE_LENGTH)
def main():
# Generate worm data structures:
worms = []
for i in range(NUMBER_OF_WORMS):
worms.append(Worm())
bext.clear()
while True: # Main simulation loop.
# Draw quit message.
bext.fg('white')
bext.goto(0, 0)
print('Ctrl-C to quit.', end='')
for worm in worms:
worm.display()
for worm in worms:
worm.moveRandom()
sys.stdout.flush()
time.sleep(PAUSE_LENGTH)
def main():
theFloor = getNewFloor()
# Generate painters:
painters = []
for color in THE_PAINTERS:
painters.append(Painter(color, theFloor))
bext.fg('black')
bext.clear()
while True: # Main simulation loop.
# Draw quit message.
bext.bg('white')
bext.goto(0, 0)
print('Ctrl-C to quit.', end='')
for painter in painters:
painter.move()
sys.stdout.flush()
time.sleep(PAUSE_LENGTH)
def displayBoard(board, ants, changedTiles):
"""Displays the board and ants on the screen. The changedTiles
argument is a list of (x, y) tuples for tiles on the screen that
have changed and need to be redrawn."""
# Draw the board data structure:
for x, y in changedTiles:
bext.goto(x, y)
if board.get((x, y), False):
bext.bg(BLACK_TILE)
else:
bext.bg(WHITE_TILE)
antIsHere = False
for ant in ants:
if (x, y) == (ant['x'], ant['y']):
antIsHere = True
if ant['direction'] == NORTH:
print(ANT_UP, end='')
elif ant['direction'] == SOUTH:
print(ANT_DOWN, end='')
elif ant['direction'] == EAST:
print(ANT_LEFT, end='')
elif ant['direction'] == WEST:
print(ANT_RIGHT, end='')
break
if not antIsHere:
print(' ', end='')
# Display the quit message at the bottom of the screen:
bext.goto(0, HEIGHT)
bext.bg(WHITE_TILE)
print('Press Ctrl-C to quit.', end='')
sys.stdout.flush() # (Required for bext-using programs.)
time.sleep(PAUSE_AMOUNT)
def main():
bext.fg('yellow')
bext.clear()
# Draw the quit message:
bext.goto(0, 0)
print('Ctrl-C to quit.', end='')
# Display the walls of the hourglass:
for wall in HOURGLASS:
bext.goto(wall[X], wall[Y])
print(WALL, end='')
while True: # Main program loop.
allSand = list(INITIAL_SAND)
# Draw the initial sand:
for sand in allSand:
bext.goto(sand[X], sand[Y])
print(SAND, end='')
runHourglassSimulation(allSand)
def clearAquarium():
global FISHES, BUBBLERS, BUBBLES, KELP
# Draw the bubbles:
for bubble in BUBBLES:
bext.goto(bubble['x'], bubble['y'])
print(' ', end='')
# Draw the fish:
for fish in FISHES:
bext.goto(fish['location']['x'], fish['location']['y'])
# Draw each character of the fish text in the right color.
print(' ' * len(fish['left'][0]), end='')
# Draw the kelp:
for kelp in KELPS:
for i, kelpSegment in enumerate(kelp['segments']):
bext.goto(kelp['x'], HEIGHT - 2 - i)
print(' ', end='')
sys.stdout.flush() # (Required for bext-using programs.)
def drawAquarium(step):
global FISHES, BUBBLERS, BUBBLES, KELP
# Simulate the fish for one step:
for fish in FISHES:
# Move the fish horizontally:
if step % fish['hspeed'] == 0:
if fish['goingRight']:
if fish['location']['x'] != WIDTH - 1 - LONGEST_FISH_LENGTH:
fish['location']['x'] += 1 # Move the fish left.
else:
fish['goingRight'] = not fish[
'goingRight'] # Turn the fish around.
fish['colors'].reverse() # Turn the colors around too.
elif not fish['goingRight']:
if fish['location']['x'] != 0:
fish['location']['x'] -= 1 # Move the fish right.
else:
fish['goingRight'] = not fish[
'goingRight'] # Turn the fish around.
fish['colors'].reverse() # Turn the colors around too.
# Fish can randomly change their horizontal direction:
fish['hchange'] -= 1
if fish['hchange'] == 0:
fish['hchange'] = random.randint(10, 60)
fish['goingRight'] = not fish[
'goingRight'] # Turn the fish around.
# Move the fish vertically:
if step % fish['vspeed'] == 0:
if fish['goingDown']:
if fish['location']['y'] != HEIGHT - 2:
fish['location']['y'] += 1 # Move the fish down.
else:
fish['goingDown'] = not fish[
'goingDown'] # Turn the fish around.
elif not fish['goingDown']:
if fish['location']['y'] != 0:
fish['location']['y'] -= 1 # Move the fish up.
else:
fish['goingDown'] = not fish[
'goingDown'] # Turn the fish around.
# Fish can randomly change their vertical direction:
fish['vchange'] -= 1
if fish['vchange'] == 0:
fish['vchange'] = random.randint(2, 20)
fish['goingDown'] = not fish['goingDown'] # Turn the fish around.
# Generate bubbles from bubblers:
for bubbler in BUBBLERS:
if random.randint(0, 5) == 0:
BUBBLES.append({'x': bubbler, 'y': HEIGHT - 2})
# Simulate the bubbles for one step:
for bubble in BUBBLES:
r = random.randint(1, 5)
if (r == 1) and (bubble['x'] != 0):
bubble['x'] -= 1 # Bubble goes left.
elif (r == 2) and (bubble['x'] != WIDTH - 1):
bubble['x'] += 1 # Bubble goes right.
bubble['y'] -= 1 # The bubble always goes up.
# Iterate over BUBBLES in reverse because I'm modifying BUBBLES while iterating over it.
for i in range(len(BUBBLES) - 1, -1, -1):
if BUBBLES[i]['y'] == 0: # Delete bubbles that reach the top.
del BUBBLES[i]
# Simulate the kelp waving for one step:
for kelp in KELPS:
for i, kelpSegment in enumerate(kelp['segments']):
if random.randint(1, 20) == 1: # 1 in 20 chance to change waving.
if kelpSegment == '(':
kelp['segments'][i] = ')'
elif kelpSegment == ')':
kelp['segments'][i] = '('
# Draw the bubbles:
bext.fg('white')
for bubble in BUBBLES:
bext.goto(bubble['x'], bubble['y'])
print(random.choice(('o', 'O', chr(176))), end='') # 176 is '°'
# Draw the fish:
for fish in FISHES:
bext.goto(fish['location']['x'], fish['location']['y'])
# Get the correct right- or left-facing fish text.
if fish['goingRight']:
fishText = fish['right'][step % len(fish['right'])]
elif not fish['goingRight']:
fishText = fish['left'][step % len(fish['left'])]
# Draw each character of the fish text in the right color.
for i, fishPart in enumerate(fishText):
bext.fg(fish['colors'][i])
print(fishPart, end='')
# Draw the kelp:
bext.fg('green')
for kelp in KELPS:
for i, kelpSegment in enumerate(kelp['segments']):
if i == 0:
# Bottom segment is always (.
kelp['segments'][i] = '('
if kelpSegment == '(':
bext.goto(kelp['x'], HEIGHT - 2 - i)
elif kelpSegment == ')':
bext.goto(kelp['x'] + 1, HEIGHT - 2 - i)
print(kelpSegment, end='')
# Draw quit message.
bext.fg('white')
bext.goto(0, 0)
print('Ctrl-C to quit.', end='')
# Draw the sand on the bottom:
bext.fg('yellow')
bext.goto(0, HEIGHT - 1)
print(chr(9608) * (WIDTH - 1), end='') # Draws '█' characters.
bext.clear()
try:
while True: # Main program loop.
# Print the cells:
previousCells = currentCells # Previous cells exists so we know which cells have changed, so we minimize flicker.
currentCells = nextCells
for y in range(0, HEIGHT, 2): # Skip every other row.
for x in range(WIDTH):
top = (x, y) in currentCells
bottom = (x, y + 1) in currentCells
if (previousCells.get((x, y), False) != currentCells.get(
(x, y), False)) or (previousCells.get(
(x, y + 1), False) != currentCells.get(
(x, y + 1), False)):
bext.goto(x, y // 2)
if top and bottom:
print(FULL_BLOCK, end='') # Fill in both halves.
elif top and not bottom:
print(TOP_BLOCK, end='') # Fill in top half.
elif not top and bottom:
print(BOTTOM_BLOCK, end='') # Fill in bottom half.
elif not top and not bottom:
print(' ', end='') # Fill in nothing.
print('') # Print a newline at the end of the row.
print('Press Ctrl-C to quit.', end='', flush=True)
# Calculate next cells based on current cells:
nextCells = {}
for x in range(WIDTH):
screenPoints.extend(
line(*transformPoint(rotatedPoints[4], rotatedPoints[5])))
screenPoints.extend(
line(*transformPoint(rotatedPoints[5], rotatedPoints[7])))
screenPoints.extend(
line(*transformPoint(rotatedPoints[7], rotatedPoints[6])))
screenPoints.extend(
line(*transformPoint(rotatedPoints[6], rotatedPoints[4])))
screenPoints = tuple(
frozenset(screenPoints)) # Get rid of duplicate points.
# Draw cube:
for x, y in screenPoints:
# (Writing to the terminal will by far be the slowest part of this program.)
bext.goto(x, y)
print(BLOCK, end='')
time.sleep(0.2) # Pause for a bit.
# Erase cube:
for x, y in screenPoints:
bext.goto(x, y)
print(' ', end='')
# Print quit message:
bext.goto(0, HEIGHT - 1)
print('Press Ctrl-C to quit.', end='')
except KeyboardInterrupt:
pass
def main():
bext.clear()
#generate some logos
logos = []
for i in range(NUMBER_OF_LOGOS):
logos.append({COLOR: random.choice(COLORS),
X: random.randint(1, (WIDTH - 4)),
Y: random.randint(1, HEIGHT - 1),
DIR: random.choice(DIRECTIONS)})
if logos[-1][X] % 2 == 1:
#make sure X is even so it can hit the corner
logos[-1][X] -= 1
cornerBounces = 0
while True:
for logo in logos:
#erase the logo's current position
bext.goto(logo[X], logo[Y])
print(' ', end='')
original_direction = logo[DIR]
#see if the logo bounces off the corners
if logo[X] == 0 and logo[Y] == 0:
logo[DIR] = DOWN_RIGHT
cornerBounces += 1
elif logo[X] == 0 and logo[Y] == HEIGHT - 1:
logo[DIR] = UP_RIGHT
cornerBounces += 1
elif logo[X] == WIDTH - 3 and logo[Y] == 0:
logo[DIR] == DOWN_LEFT
cornerBounces += 1
elif logo[X] == WIDTH - 3 and logo[Y] == HEIGHT - 1:
logo[DIR] == UP_LEFT
cornerBounces += 1
# See if the logo bounces off the left edge:
elif logo[X] == 0 and logo[DIR] == UP_LEFT:
logo[DIR] = UP_RIGHT
elif logo[X] == 0 and logo[DIR] == DOWN_LEFT:
logo[DIR] = DOWN_RIGHT
# See if the logo bounces off the right edge:
# (WIDTH - 3 because 'DVD' has 3 letters.)
elif logo[X] == WIDTH - 3 and logo[DIR] == UP_RIGHT:
logo[DIR] = UP_LEFT
elif logo[X] == WIDTH - 3 and logo[DIR] == DOWN_RIGHT:
logo[DIR] = DOWN_LEFT
# See if the logo bounces off the top edge:
elif logo[Y] == 0 and logo[DIR] == UP_LEFT:
logo[DIR] = DOWN_LEFT
elif logo[Y] == 0 and logo[DIR] == UP_RIGHT:
logo[DIR] = DOWN_RIGHT
# See if the logo bounces off the bottom edge:
elif logo[Y] == HEIGHT - 1 and logo[DIR] == DOWN_LEFT:
logo[DIR] = UP_LEFT
elif logo[Y] == HEIGHT - 1 and logo[DIR] == DOWN_RIGHT:
logo[DIR] = UP_RIGHT
if logo[DIR] != original_direction:
# Change color when the logo bounces:
logo[COLOR] = random.choice(COLORS)
#move the logo. (X moves by 2 because the terminal
#vharacers are twice as tall as they are wide)
if logo[DIR] == UP_RIGHT:
logo[X] += 2
logo[Y] -= 1
elif logo[DIR] == UP_LEFT:
logo[X] -= 2
logo[Y] -= 1
elif logo[DIR] == DOWN_RIGHT:
logo[X] += 2
logo[Y] += 1
elif logo[DIR] == DOWN_LEFT:
logo[X] -= 2
logo[Y] += 1
#display the number of corner bounces
bext.goto(5,0)
bext.fg('white')
print('Corner bounces:', cornerBounces, end='')
for logo in logos:
#draw the logos at their new location
bext.goto(logo[X], logo[Y])
bext.fg(logo[COLOR])
print('DVD', end='')
bext.goto(0,0)
sys.stdout.flush()
time.sleep(PAUSE_AMOUNT)
def main():
print('Conway\'s Game of Life')
print('By Al Sweigart [email protected]')
print('Press Ctrl-C to quit...')
time.sleep(3)
# Create random cells:
currentCells = {}
nextCells = {}
previousCells = {}
for x in range(WIDTH):
for y in range(HEIGHT):
if random.randint(0, 1) == 0:
nextCells[x, y] = True
bext.clear()
while True: # Main program loop.
previousCells = currentCells
currentCells = nextCells
# Print the cells:
for y in range(0, HEIGHT, 2): # Skip every other row.
for x in range(WIDTH):
prevTopHalf = previousCells.get((x, y), False)
curTopHalf = currentCells.get((x, y), False)
topHalfHasChanged = prevTopHalf != curTopHalf
prevBottomHalf = previousCells.get((x, y + 1), False)
curBottomHalf = currentCells.get((x, y + 1), False)
bottomHalfHasChanged = prevBottomHalf != curBottomHalf
if topHalfHasChanged or bottomHalfHasChanged:
bext.goto(x, y // 2)
if curTopHalf and curBottomHalf:
# Fill in both halves:
print(FULL_BLOCK, end='')
elif curTopHalf and not curBottomHalf:
# Fill in top half:
print(TOP_BLOCK, end='')
elif not curTopHalf and curBottomHalf:
# Fill in bottom half:
print(BOTTOM_BLOCK, end='')
elif not curTopHalf and not curBottomHalf:
# Fill in nothing:
print(' ', end='')
print() # Print a newline at the end of the row.
print('Press Ctrl-C to quit.', end='', flush=True)
# Calculate next cells based on current cells:
nextCells = {}
for x in range(WIDTH):
for y in range(HEIGHT):
# Get neighboring coordinates:
leftCoord = (x - 1) % WIDTH
rightCoord = (x + 1) % WIDTH
topCoord = (y - 1) % HEIGHT
bottomCoord = (y + 1) % HEIGHT
# Count number of living neighbors:
numNeighbors = 0
if (leftCoord, topCoord) in currentCells:
numNeighbors += 1
if (x, topCoord) in currentCells:
numNeighbors += 1
if (rightCoord, topCoord) in currentCells:
numNeighbors += 1
if (leftCoord, y) in currentCells:
numNeighbors += 1
if (rightCoord, y) in currentCells:
numNeighbors += 1
if (leftCoord, bottomCoord) in currentCells:
numNeighbors += 1
if (x, bottomCoord) in currentCells:
numNeighbors += 1
if (rightCoord, bottomCoord) in currentCells:
numNeighbors += 1
# Set cell based on Conway's Game of Life rules:
if currentCells.get((x, y), False):
if numNeighbors in (2, 3):
nextCells[x, y] = True
else:
if numNeighbors == 3:
nextCells[x, y] = True
time.sleep(PAUSE_LENGTH) # Pause to reduce flickering.
def display(self):
for i, (x, y) in enumerate(self.body):
bext.goto(x * 2, y)
bext.fg(self.colors[i])
print(BLOCK + BLOCK, end='')
def _eraseLastBodySegment(self):
# Erase the last body segment:
bext.goto(self.body[-1][0] * 2, self.body[-1][1])
print(' ', end='')
self.body.pop() # Delete the last (x, y) tuple in self.body.
def main():
bext.clear()
# Generate some dots.
dots = []
for i in range(NUMBER_OF_DOTS):
dots.append({
COLOR: random.choice(COLORS),
X: random.randint(1, WIDTH - 2),
Y: random.randint(1, HEIGHT - 2),
DIR: random.choice(DIRECTIONS)
})
while True: # Main program loop.
for dot in dots: # Handle each dot in the dots list.
# Erase the dot's current location:
bext.goto(dot[X], dot[Y])
print(' ', end='')
# Move the dot:
if dot[DIR] == UP_RIGHT:
dot[X] += 1
dot[Y] -= 1
elif dot[DIR] == UP_LEFT:
dot[X] -= 1
dot[Y] -= 1
elif dot[DIR] == DOWN_RIGHT:
dot[X] += 1
dot[Y] += 1
elif dot[DIR] == DOWN_LEFT:
dot[X] -= 1
dot[Y] += 1
# Draw the dots at their new location:
bext.goto(dot[X], dot[Y])
bext.fg(dot[COLOR])
print(DOT_CHAR, end='')
# See if the dot bounces off the corners:
if dot[X] == 0 and dot[Y] == 0:
dot[DIR] = DOWN_RIGHT
elif dot[X] == 0 and dot[Y] == HEIGHT - 1:
dot[DIR] = UP_RIGHT
elif dot[X] == WIDTH - 1 and dot[Y] == 0:
dot[DIR] = DOWN_LEFT
elif dot[X] == WIDTH - 1 and dot[Y] == HEIGHT - 1:
dot[DIR] = UP_LEFT
# See if the dot bounces off the left edge:
elif dot[X] == 0 and dot[DIR] == UP_LEFT:
dot[DIR] = UP_RIGHT
elif dot[X] == 0 and dot[DIR] == DOWN_LEFT:
dot[DIR] = DOWN_RIGHT
# See if the dot bounces off the right edge:
elif dot[X] == WIDTH - 1 and dot[DIR] == UP_RIGHT:
dot[DIR] = UP_LEFT
elif dot[X] == WIDTH - 1 and dot[DIR] == DOWN_RIGHT:
dot[DIR] = DOWN_LEFT
# See if the dot bounces off the top edge:
elif dot[Y] == 0 and dot[DIR] == UP_LEFT:
dot[DIR] = DOWN_LEFT
elif dot[Y] == 0 and dot[DIR] == UP_RIGHT:
dot[DIR] = DOWN_RIGHT
# See if the dot bounces off the bottom edge:
elif dot[Y] == HEIGHT - 1 and dot[DIR] == DOWN_LEFT:
dot[DIR] = UP_LEFT
elif dot[Y] == HEIGHT - 1 and dot[DIR] == DOWN_RIGHT:
dot[DIR] = UP_RIGHT
sys.stdout.flush() # (Required for bext-using programs.)
time.sleep(PAUSE_AMOUNT)
def runSimulationStep(self):
random.shuffle(self.zombies)
bittenZombies = []
newZombies = []
for zombie in self.zombies:
action = zombie.getAction()
if action == RIGHT:
if zombie.direction == NORTH:
zombie.direction = EAST
elif zombie.direction == SOUTH:
zombie.direction = WEST
elif zombie.direction == EAST:
zombie.direction = SOUTH
elif zombie.direction == WEST:
zombie.direction = NORTH
elif action == LEFT:
if zombie.direction == NORTH:
zombie.direction = WEST
elif zombie.direction == SOUTH:
zombie.direction = EAST
elif zombie.direction == EAST:
zombie.direction = NORTH
elif zombie.direction == WEST:
zombie.direction = SOUTH
elif action == FORWARD:
if zombie.direction == NORTH:
onTopRow = zombie._y == 0
zombieToTheNorth = self.getZombieAt(zombie._x, zombie._y - 1)
if not onTopRow and zombieToTheNorth == None:
bext.goto(zombie._x, zombie._y)
print(' ', end='')
# Move north.
zombie._y -= 1
elif zombie.direction == SOUTH:
onBottomRow = zombie._y == HEIGHT - 1
zombieToTheSouth = self.getZombieAt(zombie._x, zombie._y + 1)
if not onBottomRow and zombieToTheSouth == None:
bext.goto(zombie._x, zombie._y)
print(' ', end='')
# Move south.
zombie._y += 1
elif zombie.direction == EAST:
onRightColumn = zombie._x == WIDTH - 1
zombieToTheEast = self.getZombieAt(zombie._x + 1, zombie._y)
if not onRightColumn and zombieToTheEast == None:
bext.goto(zombie._x, zombie._y)
print(' ', end='')
# Move east.
zombie._x += 1
elif zombie.direction == WEST:
onLeftColumn = zombie._x == 0
zombieToTheWest = self.getZombieAt(zombie._x - 1, zombie._y)
if not onLeftColumn and zombieToTheWest == None:
bext.goto(zombie._x, zombie._y)
print(' ', end='')
# Move west.
zombie._x -= 1
elif action == STAY:
pass # Do nothing because the zombie is staying still.
# Have the zombie bite the zombie in front of it:
if zombie.direction == NORTH:
zombieInFront = self.getZombieAt(zombie._x, zombie._y - 1)
elif zombie.direction == SOUTH:
zombieInFront = self.getZombieAt(zombie._x, zombie._y + 1)
elif zombie.direction == EAST:
zombieInFront = self.getZombieAt(zombie._x + 1, zombie._y)
elif zombie.direction == WEST:
zombieInFront = self.getZombieAt(zombie._x - 1, zombie._y)
if zombieInFront != None and zombieInFront.__class__ != zombie.__class__:
bittenZombieIndex = self.zombies.index(zombieInFront)
newZombie = zombie.__class__(zombie.color)
newZombie._x = zombieInFront._x
newZombie._y = zombieInFront._y
newZombie.direction = zombieInFront.direction
self.zombies[bittenZombieIndex] = newZombie
self.display()
time.sleep(PAUSE_LENGTH)
def drawAquarium():
"""Draw the aquarium on the screen."""
global FISHES, BUBBLERS, BUBBLES, KELP, STEP
# Draw quit message.
bext.fg('white')
bext.goto(0, 0)
print('Fish Tank, by Al Sweigart Ctrl-C to quit.', end='')
# Draw the bubbles:
bext.fg('white')
for bubble in BUBBLES:
bext.goto(bubble['x'], bubble['y'])
print(random.choice(('o', 'O')), end='')
# Draw the fish:
for fish in FISHES:
bext.goto(fish['x'], fish['y'])
# Get the correct right- or left-facing fish text.
if fish['goingRight']:
fishText = fish['right'][STEP % len(fish['right'])]
else:
fishText = fish['left'][STEP % len(fish['left'])]
# Draw each character of the fish text in the right color.
for i, fishPart in enumerate(fishText):
bext.fg(fish['colors'][i])
print(fishPart, end='')
# Draw the kelp:
bext.fg('green')
for kelp in KELPS:
for i, kelpSegment in enumerate(kelp['segments']):
if kelpSegment == '(':
bext.goto(kelp['x'], BOTTOM_EDGE - i)
elif kelpSegment == ')':
bext.goto(kelp['x'] + 1, BOTTOM_EDGE - i)
print(kelpSegment, end='')
# Draw the sand on the bottom:
bext.fg('yellow')
bext.goto(0, HEIGHT - 1)
print(chr(9617) * (WIDTH - 1), end='') # Draws '░' characters.
sys.stdout.flush() # (Required for bext-using programs.)
screenPoints.extend(
line(*transformPoint(rotatedPoints[4], rotatedPoints[5])))
screenPoints.extend(
line(*transformPoint(rotatedPoints[5], rotatedPoints[7])))
screenPoints.extend(
line(*transformPoint(rotatedPoints[7], rotatedPoints[6])))
screenPoints.extend(
line(*transformPoint(rotatedPoints[6], rotatedPoints[4])))
screenPoints = tuple(
frozenset(screenPoints)) # Get rid of duplicate points.
# Draw cube:
for x, y in screenPoints:
# (Writing to the terminal will by far be the slowest part of this program.)
bext.goto(x, y)
print(BLOCK, end='')
time.sleep(0.2) # Pause for a bit.
# Erase cube:
for x, y in screenPoints:
bext.goto(x, y)
print(' ', end='')
# Print quit message:
bext.goto(0, height - 1)
print('Press Ctrl-C to quit.', end='')
except KeyboardInterrupt:
pass
while True:
print('Move (F)ast or (S)low?')
speed = input().upper()
if speed == 'F' or speed == 'S':
break
width, height = bext.size()
bext.clear()
try:
while True:
bext.fg('random') # Set to a random color.
x, y = width // 2, height // 2 # Start in the middle of the screen.
# Display quit instructions:
bext.goto(0, height - 2)
print('Press Ctrl-C to quit.', end='')
while (0 <= x < width) and (0 <= y < height):
# Print the block at it's current location:
bext.goto(x, y)
print(BLOCK, end='')
# Move the block:
direction = random.randint(0, 3)
if direction == 0:
x += 1
elif direction == 1:
x -= 1
elif direction == 2:
y += 1
if random.randint(1, 50) == 1:
bext.fg('random')
for i, point in enumerate(points):
# Draw our lines:
if i == len(points) - 1:
# The last point connects to the first point.
pointA = point
pointB = points[0]
else:
pointA = point
pointB = points[i + 1]
for x, y in line(pointA['x'], pointA['y'], pointB['x'], pointB['y']):
bext.goto(x, y)
print(LINE_CHAR, end='')
oldpointPositions.append((x, y))
sys.stdout.flush() # (Required for bext-using programs.)
time.sleep(0.1)
for point in points:
# Move our points:
if point['direction'] == 'upright':
point['x'] += 1
point['y'] -= 1
elif point['direction'] == 'upleft':
point['x'] -= 1
point['y'] -= 1
elif point['direction'] == 'downright':
screenPoints.extend(
line(*screenCoord(rotatedPoints[3], rotatedPoints[7])))
screenPoints.extend(
line(*screenCoord(rotatedPoints[4], rotatedPoints[5])))
screenPoints.extend(
line(*screenCoord(rotatedPoints[5], rotatedPoints[7])))
screenPoints.extend(
line(*screenCoord(rotatedPoints[7], rotatedPoints[6])))
screenPoints.extend(
line(*screenCoord(rotatedPoints[6], rotatedPoints[4])))
screenPoints = tuple(
frozenset(screenPoints)) # Get rid of duplicate points.
# Draw cube
for x, y in screenPoints:
# Writing to the terminal will by far be the slowest part of this program.
bext.goto(x, y)
print(BLOCK, end='')
time.sleep(0.1)
# Erase cube
for x, y in screenPoints:
bext.goto(x, y)
print(' ', end='')
except KeyboardInterrupt:
pass
'x': 30,
'y': 0,
'frequency': random.randint(2, 6),
'next': 1
}]
bext.fg('yellow')
bext.clear()
allSand = []
while True: # Main program loop.
# Generate sand from each source.
for source in sources:
if source['next'] <= 0 and (source['x'], source['y']) not in allSand:
allSand.append((source['x'], source['y']))
bext.goto(source['x'], source['y'])
print(SAND, end='')
source['next'] = source['frequency']
source['next'] -= 1
# Simulate all sand in the sandspace:
for i, sand in enumerate(allSand):
if sand[Y] == HEIGHT - 1:
continue # Sand is on the very bottom, so it won't move at all.
# If nothing is under this sand, move it down:
if (sand[X], sand[Y] + 1) not in allSand:
allSand[i] = (sand[X], sand[Y] + 1)
bext.goto(sand[X], sand[Y])
print(' ', end='')
# Generate some balls.
balls = []
for i in range(NUMBER_OF_BALLS):
balls.append({
'color': random.choice(COLORS),
'x': random.randint(1, WIDTH - 2),
'y': random.randint(1, HEIGHT - 2),
'direction': random.choice(DIRECTIONS)
})
while True: # Main game loop.
oldBallPositions = []
for ball in balls:
# Draw our balls:
bext.goto(ball['x'], ball['y'])
bext.fg(ball['color'])
print(BALL_CHAR, end='')
oldBallPositions.append((ball['x'], ball['y']))
sys.stdout.flush() # (Required for bext-using programs.)
time.sleep(0.1)
for ball in balls:
# Move our balls:
if ball['direction'] == 'upright':
ball['x'] += 1
ball['y'] -= 1
elif ball['direction'] == 'upleft':
ball['x'] -= 1
ball['y'] -= 1
# Create a new board data structure:
board = {'width': WIDTH, 'height': HEIGHT}
# Create ant data structures:
ants = []
for i in range(NUMBER_OF_ANTS):
ant = {'x': random.randint(0, WIDTH - 1),
'y': random.randint(0, HEIGHT - 1),
'direction': random.choice(['N', 'S', 'E', 'W'])}
ants.append(ant)
try:
while len(ants) > 0: # Keep running the simulation as long as we have ants.
# Draw the board data structure:
bext.goto(0, 0)
for y in range(board['height']):
for x in range(board['width']):
if board.get((x, y), False):
print(chr(9608), end='') # Print a solid block.
else:
print(' ', end='') # Print an empty space.
print()
print('Press Ctrl-C to quit.')
# Run a single simulation step for each ant:
nextBoard = copy.copy(board)
for ant in ants:
if board.get((ant['x'], ant['y']), False) == True:
nextBoard[(ant['x'], ant['y'])] = False
# Turn clockwise:
def main():
bext.clear()
# Draw the circle of the clock:
for y, row in enumerate(CLOCKFACE.splitlines()):
for x, char in enumerate(row):
if char != ' ':
bext.goto(x, y)
print(char)
while True: # Main program loop.
# Get the current time from the computer's clock:
currentTime = time.localtime()
h = currentTime.tm_hour % 12 # Use 12-hour clock, not 24.
m = currentTime.tm_min
s = currentTime.tm_sec
# Draw the second hand:
secHandDirection = COMPLETE_ARC * (s / 60) + OFFSET_90_DEGREES
secHandXPos = math.cos(secHandDirection)
secHandYPos = math.sin(secHandDirection)
secHandX = int(secHandXPos * SECOND_HAND_LENGTH + CENTERX)
secHandY = int(secHandYPos * SECOND_HAND_LENGTH + CENTERY)
secHandPoints = line(CENTERX, CENTERY, secHandX, secHandY)
for x, y in secHandPoints:
bext.goto(x, y)
print(SECOND_HAND_CHAR, end='')
# Draw the minute hand:
minHandDirection = COMPLETE_ARC * (m / 60) + OFFSET_90_DEGREES
minHandXPos = math.cos(minHandDirection)
minHandYPos = math.sin(minHandDirection)
minHandX = int(minHandXPos * MINUTE_HAND_LENGTH + CENTERX)
minHandY = int(minHandYPos * MINUTE_HAND_LENGTH + CENTERY)
minHandPoints = line(CENTERX, CENTERY, minHandX, minHandY)
for x, y in minHandPoints:
bext.goto(x, y)
print(MINUTE_HAND_CHAR, end='')
# Draw the hour hand:
hourHandDirection = COMPLETE_ARC * (h / 12) + OFFSET_90_DEGREES
hourHandXPos = math.cos(hourHandDirection)
hourHandYPos = math.sin(hourHandDirection)
hourHandX = int(hourHandXPos * HOUR_HAND_LENGTH + CENTERX)
hourHandY = int(hourHandYPos * HOUR_HAND_LENGTH + CENTERY)
hourHandPoints = line(CENTERX, CENTERY, hourHandX, hourHandY)
for x, y in hourHandPoints:
bext.goto(x, y)
print(HOUR_HAND_CHAR, end='')
sys.stdout.flush() # (Required for bext-using programs.)
# Keep looping until the second changes:
while True:
time.sleep(0.01)
if time.localtime().tm_sec != currentTime.tm_sec:
break
# Erase the clock hands:
for x, y in secHandPoints:
bext.goto(x, y)
print(' ', end='')
for x, y in minHandPoints:
bext.goto(x, y)
print(' ', end='')
for x, y in hourHandPoints:
bext.goto(x, y)
print(' ', end='')
def main():
# Generate some points.
points = []
for i in range(NUMBER_OF_POINTS):
points.append({
'x': random.randint(1, WIDTH - 2),
'y': random.randint(1, HEIGHT - 2),
'direction': random.choice(DIRECTIONS)
})
while True: # Main game loop.
oldpointPositions = []
if random.randint(1, 50) == 1:
bext.fg('random')
for i, point in enumerate(points):
# Draw our lines:
if i == len(points) - 1:
# The last point connects to the first point.
pointA = point
pointB = points[0]
else:
pointA = point
pointB = points[i + 1]
for x, y in line(pointA['x'], pointA['y'], pointB['x'],
pointB['y']):
bext.goto(x, y)
print(LINE_CHAR, end='')
oldpointPositions.append((x, y))
sys.stdout.flush() # (Required for bext-using programs.)
time.sleep(0.1)
for point in points:
# Move our points:
if point['direction'] == 'upright':
point['x'] += 1
point['y'] -= 1
elif point['direction'] == 'upleft':
point['x'] -= 1
point['y'] -= 1
elif point['direction'] == 'downright':
point['x'] += 1
point['y'] += 1
elif point['direction'] == 'downleft':
point['x'] -= 1
point['y'] += 1
# See if our points bounce off the corners:
if point['x'] == 0 and point['y'] == 0:
point['direction'] = 'downright'
elif point['x'] == 0 and point['y'] == HEIGHT - 1:
point['direction'] = 'upright'
elif point['x'] == WIDTH - 1 and point['y'] == 0:
point['direction'] = 'downleft'
elif point['x'] == WIDTH - 1 and point['y'] == HEIGHT - 1:
point['direction'] = 'upleft'
# See if our points bounce off the walls:
elif point['x'] == 0 and point['direction'] == 'upleft':
point['direction'] = 'upright'
elif point['x'] == 0 and point['direction'] == 'downleft':
point['direction'] = 'downright'
elif point['x'] == WIDTH - 1 and point['direction'] == 'upright':
point['direction'] = 'upleft'
elif point['x'] == WIDTH - 1 and point['direction'] == 'downright':
point['direction'] = 'downleft'
elif point['y'] == 0 and point['direction'] == 'upleft':
point['direction'] = 'downleft'
elif point['y'] == 0 and point['direction'] == 'upright':
point['direction'] = 'downright'
elif point['y'] == HEIGHT - 1 and point['direction'] == 'downleft':
point['direction'] = 'upleft'
elif point['y'] == HEIGHT - 1 and point['direction'] == 'downright':
point['direction'] = 'upright'
for pos in oldpointPositions:
# Erase all of the points.
bext.goto(pos[0], pos[1])
print(' ', end='')
print(';' * WIDTH)
print('Press Ctrl-C to quit.')
# mowerx and mowery refer to the left edge of the lower, despite direction.
mowerx = -MOWER_LEN
mowery = 0
mowerDirection = 'right'
growMode = False
while True:
# Draw the mower:
drawMower(mowerx, mowery, mowerDirection)
# Draw the cut grass:
if (mowerDirection == 'right') and (mowerx - 1 >= 0):
bext.goto(mowerx - 1, mowery)
bext.fg('green')
print(',', end='')
elif (mowerDirection == 'left') and (mowerx < WIDTH - MOWER_LEN):
bext.goto(mowerx + MOWER_LEN, mowery)
bext.fg('green')
print(',', end='')
# Move the mower:
if mowerDirection == 'right':
mowerx += 1 # Move the mower right.
if mowerx > WIDTH:
# After going past the right edge,
# change position and direction.
mowerDirection = 'left'
mowery += 1
