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import time
import sys
from curtsies import FullscreenWindow, Input, FSArray, fmtstr, fsarray
from curtsies.fmtfuncs import (
bold,
yellow,
on_blue,
cyan,
on_yellow,
on_red,
black,
)
import curtsies.events
class Cycle:
def __init__(self, attr_dict):
self.appearance = attr_dict["appearance"]
self.x, self.y = attr_dict["x"], attr_dict["y"]
self.keylist = attr_dict["keys"]
self.dir = 0
def move(self, grid):
d = self.dir
if d == 0:
self.x += 1
elif d == 90:
self.y -= 1
elif d == 180:
self.x -= 1
elif d == 270:
self.y += 1
def face(self, newdir):
""" turn to face the given direction """
if not (newdir % 180 == self.dir % 180):
self.dir = newdir
def paint(self, grid):
""" given a grid object, adds self to the grid and returns new grid
"""
grid[self.y, self.x] = self.appearance
return grid
class Bot(Cycle):
""" Dumb bot that only turns right when it's about to crash
"""
def move(self, grid):
a = self.getNextSquareCoords()
if grid[a[0], a[1]] != [" "]:
self.turnLeft()
super().move(grid)
def turnRight(self):
self.dir = (self.dir - 90) % 360
def turnLeft(self):
self.dir = (self.dir + 90) % 360
def getNextSquareCoords(self, n=2):
""" Returns the x, y coords of the box n spots in front of the bot.
"""
if self.dir == 0:
return (self.y, self.x + n)
elif self.dir == 90:
return (self.y - n, self.x)
elif self.dir == 180:
return (self.y, self.x - n)
else:
return (self.y + n, self.x)
class gameboard:
def __init__(self, width, height, players):
self.width = width
self.height = height
self.grid = FSArray(height, width)
self.players = players
self.numplayers = len(self.players)
def draw_border(self):
""" draw outer border """
box = on_yellow(black(bold("!")))
for x in range(1, self.width):
self.grid[1, x] = box
self.grid[self.height - 1, x] = box
for y in range(1, self.height):
self.grid[y, 1] = box
self.grid[y, self.width - 1] = box
def process_event(self, key):
if key == " ":
sys.exit()
for player in self.players:
if key in player.keylist:
player.face(player.keylist[key])
return False
def tick(self):
""" Do one frame of work. Returns the winner if there
is a crash
"""
# list of players alive this frame
temp_players = self.players[:]
for bike in self.players:
bike.move(self.grid)
if self.grid[bike.y, bike.x] == [" "]:
self.grid[bike.y, bike.x] = bike.appearance
else: # crashed
temp_players.remove(bike)
self.grid[bike.y, bike.x] = fmtstr("X", "red", "bold", "on_black")
if len(temp_players) == 0:
return "tie"
elif len(temp_players) < len(self.players):
return temp_players
def winner_msg(self, tick):
if len(tick) != 1:
msg = fmtstr("it's a tie!", "red")
else:
winner = tick[0]
winner_name = winner.appearance
msg = fmtstr("winner:", "yellow")
msg += " " + (winner_name * 5)
return msg
class Frame(curtsies.events.ScheduledEvent):
pass
def do_introduction(window):
h, w = window.height, window.width
messages = [
"two player tron",
fmtstr("player 1:", "on_blue", "cyan") + " wasd",
fmtstr("player 2:", "on_red", "yellow") + " arrow keys",
]
billboard = FSArray(h, w)
msg_row = h // 2 - 2
for msg in messages:
billboard[
msg_row, w // 2 - len(msg) // 2 : w // 2 + len(msg) // 2 + 1
] = fsarray([msg])
msg_row += 1
window.render_to_terminal(billboard)
# countdown msg
for i in range(3, 0, -1):
billboard[msg_row, w // 2] = fmtstr(str(i), "red")
window.render_to_terminal(billboard)
time.sleep(1)
def mainloop(window, p2_bot=False):
p1_attrs = {
"appearance": on_blue(cyan("1")),
"x": window.width // 4,
"y": window.height // 2,
"keys": {"w": 90, "a": 180, "s": 270, "d": 0},
}
p2_attrs = {
"appearance": on_red(yellow("2")),
"x": 3 * window.width // 4,
"y": window.height // 2,
"keys": {"<UP>": 90, "<LEFT>": 180, "<DOWN>": 270, "<RIGHT>": 0},
}
FPS = 15
players = [Cycle(p1_attrs), Cycle(p2_attrs)]
if p2_bot: # make p2 a bot
players[1] = Bot(p2_attrs)
world = gameboard(window.width, window.height, players)
dt = 1 / FPS
world.draw_border()
window.render_to_terminal(world.grid)
reactor = Input()
schedule_next_frame = reactor.scheduled_event_trigger(Frame)
schedule_next_frame(when=time.time())
with reactor:
for c in reactor:
if isinstance(c, Frame):
tick = world.tick()
window.render_to_terminal(world.grid)
if not tick: # if no crashes
when = c.when + dt
while when < time.time():
when += dt
schedule_next_frame(when)
else: # if crashed
world.grid[0:4, 0:25] = fsarray(
[
world.winner_msg(tick),
"r to restart",
"q to quit",
"b to make player 2 a bot",
]
)
window.render_to_terminal(world.grid)
elif c.lower() in ["r", "q", "b"]:
break
else: # common case
world.process_event(c)
if c.lower() == "r":
mainloop(window, p2_bot)
elif c.lower() == "b":
mainloop(window, True)
def main():
with FullscreenWindow(sys.stdout) as window:
do_introduction(window)
mainloop(window)
if __name__ == "__main__":
main()
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