diff --git a/19 Bunny/python/bunny.py b/19 Bunny/python/bunny.py new file mode 100755 index 00000000..c1c9a697 --- /dev/null +++ b/19 Bunny/python/bunny.py @@ -0,0 +1,81 @@ +#!/usr/bin/env python3 + + +# This data is meant to be read-only, so we are storing it in a tuple +DATA = (2,21,14,14,25, + 1,2,-1,0,2,45,50,-1,0,5,43,52,-1,0,7,41,52,-1, + 1,9,37,50,-1,2,11,36,50,-1,3,13,34,49,-1,4,14,32,48,-1, + 5,15,31,47,-1,6,16,30,45,-1,7,17,29,44,-1,8,19,28,43,-1, + 9,20,27,41,-1,10,21,26,40,-1,11,22,25,38,-1,12,22,24,36,-1, + 13,34,-1,14,33,-1,15,31,-1,17,29,-1,18,27,-1, + 19,26,-1,16,28,-1,13,30,-1,11,31,-1,10,32,-1, + 8,33,-1,7,34,-1,6,13,16,34,-1,5,12,16,35,-1, + 4,12,16,35,-1,3,12,15,35,-1,2,35,-1,1,35,-1, + 2,34,-1,3,34,-1,4,33,-1,6,33,-1,10,32,34,34,-1, + 14,17,19,25,28,31,35,35,-1,15,19,23,30,36,36,-1, + 14,18,21,21,24,30,37,37,-1,13,18,23,29,33,38,-1, + 12,29,31,33,-1,11,13,17,17,19,19,22,22,24,31,-1, + 10,11,17,18,22,22,24,24,29,29,-1, + 22,23,26,29,-1,27,29,-1,28,29,-1,4096) + + +def display_intro(): + print(tab(33) + "BUNNY") + print(tab(15) + "CREATIVE COMPUTING MORRISTOWN, NEW JERSEY") + print("\n\n") + + +def tab(column): + """ Emulates the TAB command in BASIC. Returns a string with ASCII + codes for setting the cursor to the specified column. """ + return "\r\33[{}C".format(column) + + +def play(): + display_intro() + + # Using an iterator will give us a similar interface to BASIC's READ + # command. Instead of READ, we will call 'next(data)' to fetch the next element. + data = iter(DATA) + + # Read the first 5 numbers. These correspond to letters of the alphabet. + # B=2, U=21, N=14, N=14, Y=25 + + # Usually, list comprehensions are good for transforming each element in a sequence. + # In this case, we are using range to repeat the call to next(data) 5 times. The underscore (_) + # indicates that the values from range are discarded. + bunny = [next(data) for _ in range(5)] + L = 64 + + # Interpretting a stream of data is a very common software task. We've already intepretted + # the first 5 numbers as letters of the alphabet (with A being 1). Now, we are going to + # combine this with a different interpretation of the following data to draw on the screen. + # The drawing data is essentially a series of horizontal line segments given as begin and end + # offsets. + while True: + command = next(data) + + if command < 0: + print() + continue + + if command > 128: + break + + # If we've reached this portion of the code, 'command' indicates the 'start' + # position of a line segment. + start = command + # Position cursor at start + print(tab(start), end="") + + # The following number, indicates the end of the segment. + end = next(data) + # Unlike FOR I=X TO Y, the 'stop' argument of 'range' is non-inclusive, so we must add 1 + for i in range(start, end+1, 1): + # Cycle through the letters in "BUNNY" as we draw line + j = i - 5 * int(i / 5) + print(chr(L + bunny[j]), end="") + + +if __name__ == "__main__": + play()