#Battleships!
import random
import time
#Asigns Playing to True
playing = True
hits = []
comp_hits = []
already = []
values = []
def checkpos(computer_values, values):
    values = computer_values
    if len(computer_values) == 6:
        for i in range(6):
            if int(ord(computer_values[i][0]))-65 > 5:
                computer_values = input('Invalid - Enter 6 positions')
                computer_values = computer_values.split()
                checkpos(computer_values, values)
            elif int(computer_values[i][1]) > 5:
                computer_values = input('Invalid - Enter 6 positions')
                computer_values = computer_values.split()
                checkpos(computer_values, values)
    else:
        computer_values = input('Invalid - Enter 6 positions')
        computer_values = computer_values.split()
        checkpos(computer_values, values)
    return
def compvals(comp_hits, values):
    comp_hits = values
    comptest(comp_hits, values)
    return
def comptest(comp_hits, values):
    for i in range(len(comp_hits)):
        if comp_hits.count(comp_hits[i]) > 1:
            comp_hits.clear()
            pick(comp_hits)
    return
def comp_shot(grid2, comp_hits):
    first = random.randint(65, 69)
    first = chr(first)
    second = random.randint(1,5)
    second = str(second)
    pos = first+second
    if int(pos[1]) > 5:
        pos = input('Guess a Position: ').upper()
        shotpos(pos, grid2)
    row = int(pos[1])
    column = int(ord(pos[0]))-65
    if pos in comp_hits:
        for i in range(len(comp_hits)):
            if pos == comp_hits[i]:
                break
        grid2[column][row] = 'X'
        comp_hits.remove(pos)
    elif pos not in comp_hits:
        grid2[column][row] = 'O'
    for num in range(6):
        for num2 in range(6):
            print('  ', grid[num][num2], end='')
        print('t    ', end='')
        for num2 in range(6):
            print('  ', grid2[num][num2], end='')
        print()
    return
#Determines Row number and Position from coordinates
def shotpos(pos, grid, hits):
    try:
        int(pos[1])
    except:
        pos = input('Invalid - Guess a Position: ').upper()
        shotpos(pos, grid, hits)
    else:
        if int(pos[1]) > 5:
            pos = input('Invalid - Guess a Position: ').upper()
            shotpos(pos, grid, hits)
        row = int(pos[1])
        column = int(ord(pos[0]))-65
        if column > 5:
            pos = input('Invalid - Guess a Position: ').upper()
            shotpos(pos, grid, hits)
        if pos in hits:
            for i in range(len(hits)):
                if pos == hits[i]:
                    break
            grid[column][row] = 'X'
            hits.remove(pos)
        elif pos not in hits:
            grid[column][row] = 'O'
        for num in range(6):
            for num2 in range(6):
                print('  ', grid[num][num2], end='')
            print('t    ', end='')
            for num2 in range(6):
                print('  ', grid2[num][num2], end='')
            print()
    return
def test(hits):
    for i in range(len(hits)):
        if hits.count(hits[i]) > 1:
            hits.clear()
            pick(hits)
def pick(hits):
    for i in range(6):
        first = random.randint(65, 69)
        first = chr(first)
        second = random.randint(1,5)
        second = str(second)
        both = first+second
        hits.append(both)
    test(hits)
def compshot(grid2, comp_hits, already):
    row = random.randint(1,5)
    column = chr(random.randint(65,69))
    pos = column+str(row)
    column = ord(column)-65
    if pos in already:
        compshot(grid2, comp_hits, already)
    elif pos in comp_hits:
        for i in range(len(comp_hits)):
            if pos == comp_hits[i]:
                break
        grid2[column][row] = 'X'
        comp_hits.remove(pos)
        already.append(pos)
    elif pos not in comp_hits:
        grid2[column][row] = 'O'
        already.append(pos)
    for num in range(6):
        for num2 in range(6):
            print('  ', grid[num][num2], end='')
        print('t    ', end='')
        for num2 in range(6):
            print('  ', grid2[num][num2], end='')
        print()
    return
#Takes User name and Capitalize it.
user_name = (input('Please Enter Your Name: ')+'.').capitalize()
#Outputs the user_name and asks if wanting to play.
print('Hello,', user_name, 'Are You ready to play Battleships?')
#Gets User answer and Checks if want to play
if (input('  '))[0].lower() == 'n':
    #If the answer is no, Quit the Game
    print('Ok, That's Fine')
    SystemExit()
#Grid of Asterisks That makes up the Playing Field
grid = [['A ','*','*','*','*','*'],
        ['B ','*','*','*','*','*'],
        ['C ','*','*','*','*','*'],
        ['D ','*','*','*','*','*'],
        ['E ','*','*','*','*','*'],
        ['  ','1','2','3','4','5']]
grid2 = [['A ','*','*','*','*','*'],
        ['B ','*','*','*','*','*'],
        ['C ','*','*','*','*','*'],
        ['D ','*','*','*','*','*'],
        ['E ','*','*','*','*','*'],
        ['  ','1','2','3','4','5']]
computer_values = input('Enter 6 positions')
computer_values = computer_values.split()
values = computer_values
checkpos(computer_values, values)
compvals(comp_hits, values)
#Prints out Grid
for num in range(6):
    for num2 in range(6):
        print('  ', grid[num][num2], end='')
    print('t    ', end='')
    for num2 in range(6):
        print('  ', grid2[num][num2], end='')
    print()
pick(hits)
while hits:
    pos = input('Guess a position: ').upper()
    shotpos(pos, grid, hits)
    print('Computer is thinking...')
    time.sleep(1)
    compshot(grid2, comp_hits, already)