Python Homework Solution on Missile Crisis

# Missile Crisis

def dice():
  # Value returned is throw of dice
  import random
  score = 7
  while (score > 6):
    N = random.random()
    score = int( N * 10) + 1
  return score

def move(A, B, C):
  # Values pased to local variables:
  # A is game level
  # B is current player position
  # C is direction chosen
  # Value returned is new player position
  D = 0
  IR = A * 2 + 1
  SV = 2 * A  + 3
  N = 0
  for i in range(IR):
    MP = int (IR / 2)
    DEC = -2 * i    
    INC = 4 * (i - MP) * (i > MP)    
    JR = SV + DEC + INC    
    for j in range(JR):
      N = N + 1
      if (N == B):
        D = i
  D = D + (C == "D")
  IR = A * 2 + 1
  MP = int (IR / 2)
  FVAL = - 2 * A 
  DVAL = 2 * (D - 2)
  IVAL = ((D - MP) * 4 - 2) * (D > MP)
  U = FVAL + DVAL - IVAL
  if (C == "D"):
    U = -U
  if (C == "U"):
    E = B + U
  if (C == "D"):
    E = B + U
  if (C == "L"):
    E = B - 1
  if (C == "R"):
    E = B + 1
  return E

def board(A, B):
  # Values passed to local variables:
  # A is game level
  # B is sea array
  IR = A * 2 + 1
  SV = 2 * A  + 3
  C = 0
  for i in range(IR):
    MP = int (IR / 2)
    DEC = -2 * i    
    INC = 4 * (i - MP) * (i > MP)    
    IND = i - 2 * (i - MP) * (i > MP)
    JR = SV + DEC + INC    
    for j in range(IND):
      print chr(32),
    for j in range(JR):
      C = C + 1
      if (i == 0 or i == IR - 1):
          B[C] = 35
      if (j == 0 or j == JR - 1):
          B[C] = 35
      print chr(B[C]),
    print

def print_lines():
  print("-------------------------------")
  print("\n\n\n")

def get_direction(s):
  D = 'm'
  while(D not in "URLD"):
    D = raw_input(s)
  return D

def main():
  sea = [126] * 717
  # This section lets you test board() function
  # L = input("Enter level ")
  # board(L, sea)

  # This section lets you test dice() function
  # print("You threw a "),
  # print dice()

  # This section lets you test move() function
  current_level = input("Enter beginning level : ")
  end_level = input("Enter end level : ")

  if(current_level>end_level):
    print("Current level cannot be greater than end level")
    return

  scoreA = 0
  scoreB = 0

  while(current_level<=end_level):
    print("GAME : LEVEL " + str(current_level))
    print("---------------------------")

    a_got_6 = False
    b_got_6 = False 
    game_over = False
    i = 0

    posA = (2*current_level)+5
    target = (current_level*current_level)+(4*current_level)+2      
    posB =  (2*target)-posA 

    sea = [126] * 717
    sea[posA] = 65
    sea[posB] = 66

    while(not game_over):
      
      if(i%2==0):
        board(current_level,sea)
      if(i%2==0):
        print_lines()
        print("Player A's turn")
        if(not a_got_6):
          raw_input("You haven't got a 6 yet. Press ENTER key to roll the dice: ")
          a = dice()
          print("A threw " + str(a))
          if(a==6):
            print("YAY! You got a 6.")
            a_got_6 = True
        
        if(a_got_6):
          D = get_direction("Player A, Enter direction (U/D/L/R): ")
          sea[posA] = 126
          posA = move(current_level, posA, D)
          sea[posA] = 65
          if(posA==target):
            print("Player A wins level " + str(current_level))
            scoreA+=1
            game_over = True
          
      else:
        print_lines()
        print("Player B's turn")
        if(not b_got_6):
          raw_input("You haven't got a 6 yet. Press ENTER key to roll the dice: ")
          b = dice()
          print("B threw " + str(b))
          if(b==6):
            print("YAY! You got a 6.")
            b_got_6 = True
        
        if(b_got_6):
          D = get_direction("Player B, Enter direction (U/D/L/R): ")
          sea[posB] = 126
          posB = move(current_level, posB, D)
          sea[posB] = 66
          if(posB==target):
            print("Player B wins level " + str(current_level))
            scoreB+=1
            game_over = True
      i+=1

    print("End of level " + str(current_level))
    print("Scores: A - " + str(scoreA) + ", B - " + str(scoreB))
    current_level+=1
    

  print("--------------GAME OVER--------------")

main()