From b0d2657d8978bd03a8d016b1afdb8ecbfdabc9b5 Mon Sep 17 00:00:00 2001
From: Ben Winston
Date: Sat, 15 Dec 2018 21:32:32 -0500
Subject: initial commit

---
 fifteen.py | 170 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 170 insertions(+)
 create mode 100644 fifteen.py

diff --git a/fifteen.py b/fifteen.py
new file mode 100644
index 0000000..070494d
--- /dev/null
+++ b/fifteen.py
@@ -0,0 +1,170 @@
+import curses
+from curses import wrapper
+import random
+
+board = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]
+winning_board = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]
+moves = ['u', 'd', 'l', 'r']
+
+def init_board(rand_moves):
+    # make a number of random moves
+    for i in range(0,rand_moves):
+        r = random.choice(moves)
+        if r is 'u':
+            do_up()
+        elif r is 'd':
+            do_down()
+        elif r is 'l':
+            do_left()
+        elif r is 'r':
+            do_right()
+
+# True if we've won, False if not
+def has_won():
+    if board == winning_board:
+        return True
+    return False
+
+# returns the index of the blank tile
+def blank():
+    return board.index(16)
+
+# Move validity
+def can_down():
+    return blank() // 4 != 0
+def can_up():
+    return blank() // 4 != 3
+def can_right():
+    return blank() % 4 != 0
+def can_left():
+    return blank() % 4 != 3
+
+# perform a move
+def move(offset):
+    oc = blank()
+    ov = board[oc]
+    tc = blank() + offset
+    tv = board[tc]
+    board[oc] = tv
+    board[tc] = ov
+def do_right():
+    if can_right():
+        move(-1)
+        return True
+    return False
+def do_left():
+    if can_left():
+        move(1)
+        return True
+    return False
+def do_down():
+    if can_down():
+        move(-4)
+        return True
+    return False
+def do_up():
+    if can_up():
+        move(4)
+        return True
+    return False
+
+# main method
+def main(stdscr):
+
+    # set up a board with 400 random moves
+    init_board(400)
+    mvs = 0
+    print_board(stdscr, mvs)
+
+    # loop until someone presses "q"
+    while 1:
+
+        # move based on input
+        c = stdscr.getch()
+        if c == curses.KEY_LEFT:
+            if do_left():
+                mvs = mvs + 1
+        elif c == curses.KEY_RIGHT:
+            if do_right():
+                mvs = mvs + 1
+        elif c == curses.KEY_UP:
+            if do_up():
+                mvs = mvs + 1
+        elif c == curses.KEY_DOWN:
+            if do_down():
+                mvs = mvs + 1
+        elif c == ord('q'):
+            break
+
+        # print the new board
+        print_board(stdscr, mvs)
+
+# print an empty board
+def print_empty_board(stdscr, y, x):
+    # print the first line of dashes
+    stdscr.addstr(y,x*5,"{:-^21}".format(""), curses.A_BOLD)
+
+    # empty squares
+    for i in range(1,5):
+        for j in range(0,5):
+            stdscr.addstr((i+y), (j+x)*5, "|", curses.A_BOLD)
+
+    # print the last line of dashes
+    stdscr.addstr((5+y), x*5,"{:-^21}".format(""), curses.A_BOLD)
+
+# print the tiles of a board
+def print_board_tiles(stdscr, b, y, x):
+
+    # create the color pairs
+    curses.init_pair(1, curses.COLOR_RED, curses.COLOR_WHITE)
+    curses.init_pair(2, curses.COLOR_WHITE, curses.COLOR_RED)
+
+    # put in numbers
+    ocnt = y+1
+    icnt = (x*5)+1
+    for i,v in enumerate(b):
+        # odds get one color, evens the other
+        if v % 2 == 1:
+            stdscr.addstr(ocnt,icnt,"{:^4}".format(v), curses.color_pair(1))
+        elif v == 16:
+            # blank tile gets no coloring
+            stdscr.addstr(ocnt,icnt,"{:^4}".format(""))
+        else:
+            stdscr.addstr(ocnt,icnt,"{:^4}".format(v), curses.color_pair(2))
+
+        # update counts
+        if (i+1) % 4 == 0:
+            ocnt = ocnt + 1
+            icnt = (x*5) + 1
+        else:
+            icnt = icnt + 5
+
+
+def print_board(stdscr, mvs):
+    # clear screen
+    stdscr.clear()
+
+    # headers
+    stdscr.addstr(0, 0, "{:~^56}".format("Fifteen Puzzle"), curses.A_BOLD)
+    stdscr.addstr(2, 0, "{:^21}".format("Play"))
+    stdscr.addstr(2, 35, "{:^21}".format("Target"))
+
+    # print play board
+    print_empty_board(stdscr, 3, 0)
+    print_board_tiles(stdscr, board, 3, 0)
+
+    # print target board
+    print_empty_board(stdscr, 3, 7)
+    print_board_tiles(stdscr, winning_board, 3, 7)
+
+    # print the moves
+    stdscr.addstr(9, 0, "{} moves".format(str(mvs)))
+
+    # print if we won
+    stdscr.addstr(9, 35, "Have we won? {}".format(str(has_won())))
+
+    # refresh the screen
+    stdscr.refresh()
+
+# wrap the main method in the curses wrapper
+wrapper(main)
-- 
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