Function getComputerMemoryString

src/gamesbyexample/hacking.py:117–162

Return a string representing the "computer memory".

(words)

def getComputerMemoryString(words):
    """Return a string representing the "computer memory"."""

    # Pick one line per word to contain a word. There are 16 lines, but
    # they are split into two halves.
    linesWithWords = random.sample(range(16 * 2), len(words))
    # The starting memory address (this is also cosmetic).
    memoryAddress = 16 * random.randint(0, 4000)

    # Create the "computer memory" string.
    computerMemory = []  # Will contain 16 strings, one for each line.
    nextWord = 0  # The index in words of the word to put into a line.
    for lineNum in range(16):  # The "computer memory" has 16 lines.
        # Create a half line of garbage characters:
        leftHalf = ''
        rightHalf = ''
        for j in range(16):  # Each half line has 16 characters.
            leftHalf += random.choice(GARBAGE_CHARS)
            rightHalf += random.choice(GARBAGE_CHARS)

        # Fill in the password from words:
        if lineNum in linesWithWords:
            # Find a random place in the half line to insert the word:
            insertionIndex = random.randint(0, 9)
            # Insert the word:
            leftHalf = (leftHalf[:insertionIndex] + words[nextWord]
                + leftHalf[insertionIndex + 7:])
            nextWord += 1  # Update the word to put in the half line.
        if lineNum + 16 in linesWithWords:
            # Find a random place in the half line to insert the word:
            insertionIndex = random.randint(0, 9)
            # Insert the word:
            rightHalf = (rightHalf[:insertionIndex] + words[nextWord]
                + rightHalf[insertionIndex + 7:])
            nextWord += 1  # Update the word to put in the half line.

        computerMemory.append('0x' + hex(memoryAddress)[2:].zfill(4)
                     + '  ' + leftHalf + '    '
                     + '0x' + hex(memoryAddress + (16*16))[2:].zfill(4)
                     + '  ' + rightHalf)

        memoryAddress += 16  # Jump from, say, 0xe680 to 0xe690.

    # Each string in the computerMemory list is joined into one large
    # string to return:
    return '\n'.join(computerMemory)


def askForPlayerGuess(words, tries):