213 lines
7.6 KiB
Python
213 lines
7.6 KiB
Python
# SPDX-License-Identifier: LGPL-3.0-or-later
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# Copyright (C) 2020 Johannes Wache
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"""
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Snake Game
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~~~~~~~~~~
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This is a classic arcade game called snake.
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.. figure:: res/SnakeApp.png
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:width: 179
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Screenshot of the snake game
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You have to direct the white snake to the food block (blue dot) by swiping in the desired direction. You must not hit the border or the snake's body itself.
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Every time the snake eats the food, its length increases by 1. (In the current version there is an error that the length of the snake is not increased by 1 when the snake gets the food for the first time. This has to be fixed).
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Once the game is over, you can try again by tapping on the screen and then swipe in the direction you want to move. If you want to leave the game, simply wipe in any direction once the game is over.
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And now: Have fun playing! :)
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"""
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# 2-bit RLE, generated from res/snake_icon.png, 856 bytes
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snake_game = (
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b'\x02'
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b'`.'
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b'\x19\x01\x16\x01?\n\x01@\x02AAQA\x80\x01\x81'
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b'\x14\x015\x81\xc0\x07\xc1@\x03R\xc1\x80\x02\x81\x01\xc0'
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b'$\xc1@IA\xceA\xc1\x016\x80\x01\x81\xc0\x03\xc1'
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b'\xc1\xd1\xc1@\x02A\x01\x80\xff\x81\x81\x8e\x81\x81\xc0$'
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b'\xc16@\x01A\x80\x03\x81\x81\x91\x81\xc0\x02\xc1\x01@'
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b'\xffAQ\x80$\x816\xc0\x01\xc1@\x03AAQA'
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b'\x80\x02\x81\x01\xc0\xdf\xc1@\xffANAA\x80$\x81'
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b'6\xc0\x01\xc1@\x03AAQA\x80\x02\x81\x01\xc0\xdf'
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b'\xc1@\xffANAA\x80$\x816\xc0\x01\xc1@\x03'
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b'AAQA\x80\x02\x81\x01\xc0\xdf\xc1@\xffANA'
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b'A\x80$\x816\xc0\x01\xc1@\x03AAQA\x80\x02'
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b'\x81\x01\xc0\xdf\xc1@\xffANAA\x80$\x816\xc0'
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b'\x01\xc1@\x03AAQA\x80\x02\x81\x01\xc0\xdf\xc1@'
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b'\xffANAA\x80$\x816\xc0\x01\xc1@\x03AA'
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b'QA\x80\x02\x81\x01\xc0\xdf\xc1@\xffANAA\x80'
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b'$\x816\xc0\x01\xc1@\x03AAQA\x80\x02\x81\x01'
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b'\xc0\xdf\xc1@\xffANAA\x80$\x816\xc0\x01\xc1'
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b'@\x03AAQA\x80\x02\x81\x01\xc0\xdf\xc1@\xffA'
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b'NAA\x80$\x816\xc0\x01\xc1@\x03AAQA'
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b'\x80\x02\x81\x01\xc0\xdf\xc1@\xffANAA\x80$\x81'
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b'6\xc0\x01\xc1@\x03AAQA\x80\x02\x81\x01\xc0\xdf'
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b'\xc1@\xffANAA\x80$\x816\xc0\x01\xc1@\x03'
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b'AAQA\x80\x02\x81\x01\xc0\xdf\xc1@\xffANA'
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b'A\x80$\x816\xc0\x01\xc1@\x03AAQA\x80\x02'
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b'\x81\x01\xc0\xdf\xc1@\xffANAA\x80$\x816\xc0'
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b'\x01\xc1@\x03AAQA\x80\x02\x81\x01\xc0\xdf\xc1@'
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b'\xffANAA\x80$\x816\xc0\x01\xc1@\x03AA'
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b'QA\x80\x02\x81\x01\xc0\xdf\xc1@\xffANAA\x80'
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b'$\x816\xc0\x01\xc1@\x03AAQA\x80\x02\x81\x01'
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b'\xc0\xff\xc1\xd1@IA6\x80\x01\x81\xc0\x03\xc1\xc1\xd1'
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b'\xc1@\x02A\x01\x80\xb6\x81\xc0\xdb\xc1\xce\xc1\xc1@$'
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b'A6\x80\x01\x81\xc0\x03\xc1\xd2\xc1@\x02A\x01\x01\x01'
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b'\x0e\x01\x01\x016\x01\x81\x81\x01\x0e\x01\x01\x81\x01\x14\x01'
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b'4\x01\x01\x01\x80H\x81\xc0I\xc1\x8e\xc1\x81\x01\x01\x01'
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b'\xc1\xc1\xce\xc1\xc1\x017\x01@\xffAQ\x80$\x81\x01'
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b'\x01AQ\x817\x01AANAA\x81\x01\x01AA'
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b'NAA\x817\x01\xc0\xdf\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01\xc1ANAA\x81\x01\x01'
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b'\xc1ANAA\x817\x01AQ@IA\x01\x01\x80'
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b'\xff\x81\x91A7\x01\xc0\xb6\xc1@\xdbANAA\x80'
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b'$\x81\x01\x01\xc1ANAA\x818\x12\x03\x12?\r'
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b'\x01\x14\x01?\x9c'
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)
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import wasp, time
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from random import randint
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class SnakeGameApp():
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NAME = 'Snake'
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ICON = snake_game
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def __init__(self):
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self.running = True
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self.snake = Snake()
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self.food_location()
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self.highscore = 1
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def foreground(self):
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"""Activate the application."""
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wasp.watch.drawable.fill()
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if self.running:
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self.update()
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else:
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self.snake.show()
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wasp.watch.drawable.fill(x=self.food[0],y=self.food[1],w=15,h=15,bg=0x00ff)
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wasp.system.request_event(wasp.EventMask.TOUCH |
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wasp.EventMask.SWIPE_UPDOWN |
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wasp.EventMask.SWIPE_LEFTRIGHT)
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wasp.system.request_tick(250)
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def touch(self,event):
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if not self.running:
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self.running = True
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wasp.watch.drawable.fill()
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def swipe(self, event):
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if self.running:
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"""Notify the application of a touchscreen swipe event."""
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if event[0] == wasp.EventType.UP:
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self.snake.set_dir(0,-15)
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elif event[0] == wasp.EventType.DOWN:
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self.snake.set_dir(0,15)
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elif event[0] == wasp.EventType.LEFT:
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self.snake.set_dir(-15,0)
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elif event[0] == wasp.EventType.RIGHT:
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self.snake.set_dir(15,0)
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else:
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return True
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def tick(self, ticks):
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"""Notify the application that its periodic tick is due."""
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self.update()
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def food_location(self):
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x = randint(0,15) * 15
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y = randint(0,15) * 15
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self.food = [x,y]
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def update(self):
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draw = wasp.watch.drawable
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"""Draw the display from scratch."""
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if (self.snake.eat(self.food)):
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self.food_location()
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self.snake.update()
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if (self.snake.end_game()):
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if len(self.snake.body) > self.highscore:
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self.highscore = len(self.snake.body)
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self.running = False
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wasp.watch.vibrator.pulse()
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self.snake = Snake()
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draw.fill()
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draw.set_color(0xf000)
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draw.string('GAME', 0, 60, width=240)
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draw.string('OVER', 0, 98, width=240)
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draw.string('Highscore: '+str(self.highscore-1),0,180,width=240)
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draw.reset()
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return True
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if self.running:
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self.snake.show()
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draw.fill(x=self.food[0],y=self.food[1],w=15,h=15,bg=0x00ff)
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return True
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# Based on https://www.youtube.com/watch?v=OMoVcohRgZA
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class Snake():
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def __init__(self):
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self.body = [[120,120]]
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self.xdir = 0
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self.ydir = 0
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self.justate = False
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self.oldtail = [0,0]
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def set_dir(self,x,y):
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self.xdir = x
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self.ydir = y
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def update(self):
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self.oldtail = self.body[0].copy()
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head = self.body[-1].copy()
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if not self.justate:
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self.body = self.body[1:]
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self.justate = False
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head[0] += self.xdir
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head[1] += self.ydir
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self.body.append(head)
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def eat(self,pos):
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x = self.body[-1][0]
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y = self.body[-1][1]
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if (x == pos[0] and y == pos[1]):
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self.justate = True
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# Color food white so it appears as a body part:
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wasp.watch.drawable.fill(x=(self.body[-1][0]),y=(self.body[-1][1]),w=15,h=15,bg=0x0000)
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wasp.watch.drawable.fill(x=self.body[-1][0]+1,y=self.body[-1][1]+1,w=13,h=13,bg=0xffff)
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return True
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return False
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def end_game(self):
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x = self.body[-1][0]
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y = self.body[-1][1]
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if (x >= 240 or x < 0) or (y >= 240 or y < 0):
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return True
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for i in range(len(self.body)-1):
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part = self.body[i]
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if (part[0] == x and part[1] == y):
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return True
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return False
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def show(self):
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draw = wasp.watch.drawable
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draw.fill(x=self.oldtail[0],y=self.oldtail[1],w=15,h=15,bg=0x0000)
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draw.fill(x=self.body[-1][0]+1,y=self.body[-1][1]+1,w=13,h=13,bg=0xffff)
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