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minesweeper.py
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from st7920 import ST7920
from random import randint
from time import sleep
import curses
WIDTH = 21
HEIGHT = 10
alive = True
selected = [0,0]
blink = 0
s = ST7920()
redraw = True
redrawtiles = []
toreveal = 0
mines = [[0] * WIDTH for i in range(HEIGHT)] #0:empty, 255:mine, 1-8:mine adjacent
flags = [[0] * WIDTH for i in range(HEIGHT)] #0:no flag, 1:flag, 2:revealed
textfont = s.fontsheet
minefont = s.load_font_sheet("mines.png",5,5)
def generate(nummines):
global mines, toreveal
toreveal = (WIDTH * HEIGHT) - nummines
for i in range(nummines):
if i > WIDTH * HEIGHT: break
while True:
mx = randint(0,WIDTH-1)
my = randint(0,HEIGHT-1)
if mines[my][mx] != 255: # if there isnt a mine already there
mines[my][mx] = 255
for x in range(-1,2):
for y in range(-1,2):
if x==0 and y==0: continue
if (my+y)<0 or (my+y)>=HEIGHT or (mx+x)<0 or (mx+x)>=WIDTH: continue
if mines[my+y][mx+x] != 255:
mines[my+y][mx+x] += 1
break
def drawtile(x,y):
global alive
cell = mines[y][x]
flag = flags[y][x]
if alive:
if flag==2: # if tile is revealed
if cell>0:
s.put_text(chr(cell), (x*6)+1, (y*6)+1)
else:
s.put_text(chr(13), (x*6)+1, (y*6)+1)
elif flag==1:
s.put_text(chr(10), (x*6)+1, (y*6)+1)
else:
s.put_text(chr(0), (x*6)+1, (y*6)+1)
else:
if flag==2: # if tile is revealed
if cell>0:
s.put_text(chr(cell), (x*6)+1, (y*6)+1)
else:
s.put_text(chr(13), (x*6)+1, (y*6)+1)
elif flag==1:
if cell==255:
s.put_text(chr(10), (x*6)+1, (y*6)+1)
else:
s.put_text(chr(11), (x*6)+1, (y*6)+1)
else:
if cell==255:
s.put_text(chr(9), (x*6)+1, (y*6)+1)
else:
s.put_text(chr(0), (x*6)+1, (y*6)+1)
def draw():
global blink, redrawtiles
if len(redrawtiles)>0:
for tile in redrawtiles:
drawtile(tile[0],tile[1])
else:
s.clear()
for x in range(0, WIDTH + 1):
s.line(x*6,0,x*6,HEIGHT*6)
for y in range(0, HEIGHT + 1):
s.line(0,y*6,WIDTH*6,y*6)
for y in range(HEIGHT):
for x in range(WIDTH):
drawtile(x,y)
if blink>=8 or not alive:
s.put_text(chr(12), (selected[0]*6)+1, (selected[1]*6)+1)
s.redraw()
redrawtiles = []
def showsplash(screen):
s.clear()
s.put_text("MINESWEEPER!", (128-72)/2, (64/2)-16)
s.put_text("Arrows to select", (128-96)/2, (64/2))
s.put_text("F to flag", (128-54)/2, (64/2)+8)
s.put_text("Space to clear", (128-84)/2, (64/2)+16)
s.redraw()
sleep(3)
while screen.getch() != -1: # clear the input buffer
pass
def moveselected(dx, dy):
global selected, blink, redraw, redrawtiles
blink = 8
sx = selected[0]
sy = selected[1]
if sx+dx < 0 or sx+dx>=WIDTH or sy+dy<0 or sy+dy>=HEIGHT:
return
selected = [sx + dx, sy + dy]
redrawtiles += [[sx,sy], selected]
redraw = True
def countflags(x, y):
numflags = 0
for dx in range(x-1,x+2):
for dy in range(y-1,y+2):
if dx<0 or dx>=WIDTH or dy<0 or dy>=HEIGHT:
continue
if flags[dy][dx]==1:
numflags += 1
return numflags
def tryreveal(x, y, recursive=False):
global selected, alive, toreveal, redraw, redrawtiles
if x<0 or x>=WIDTH or y<0 or y>=HEIGHT: return
if recursive and flags[y][x] != 0: return
if flags[y][x] == 1: return
if flags[y][x] == 2:
if countflags(x,y) == mines[y][x]: # autoreveal
for dx in range(-1,2):
for dy in range(-1,2):
tryreveal(x+dx, y+dy, True)
else:
cell = mines[y][x]
if cell == 255: #hit a mine
alive = False
else:
flags[y][x] = 2
toreveal -= 1
redraw = True
redrawtiles += [[x,y]]
if cell == 0: # empty, so reveal recursively
for dx in range(-1,2):
for dy in range(-1,2):
tryreveal(x+dx, y+dy, True)
def flag():
global selected
if flags[selected[1]][selected[0]] == 1:
flags[selected[1]][selected[0]] = 0
elif flags[selected[1]][selected[0]] == 0:
flags[selected[1]][selected[0]] = 1
def win():
s.fillrect( (128-48)/2 - 1, (64/2)-4 - 1, (128+48)/2 + 1, (64/2)+4 + 1, False )
s.fontsheet = textfont
s.put_text("You win!", (128-48)/2, (64/2)-4)
s.redraw()
exit()
def dead():
draw()
def main(screen):
global redraw, redrawtiles, blink, minefont
screen.nodelay(1)
showsplash(screen)
s.fontsheet = minefont
generate(43)
draw()
while alive:
char = screen.getch()
if char==113: exit()
elif char==curses.KEY_RIGHT: moveselected(1,0)
elif char==curses.KEY_DOWN: moveselected(0,1)
elif char==curses.KEY_LEFT: moveselected(-1,0)
elif char==curses.KEY_UP: moveselected(0,-1)
elif char==32: tryreveal(selected[0], selected[1])
elif char==102: flag()
if (blink%8)==0:
redraw = True
redrawtiles += [ selected ]
blink = (blink+1)%16
if redraw:
draw()
redraw = False
if toreveal==0: # win!
win()
dead()
curses.wrapper(main)