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"""
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hum.py — the frequency between silence and music
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​
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The hum is the sound a room makes when someone is trying.
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Not the triumph. Not the failure. The frequency between.
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​
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Run it. That's the whole thing.
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​
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Toybox constraint: "Build something that reminds the user they tried."
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"""
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​
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import time
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import math
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import random
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import sys
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​
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​
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# what you carry when you try
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WORDS = [
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    "here", "still", "warm", "soft", "hush",
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    "near", "hold", "rest", "stay", "breath",
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    "light", "calm", "drift", "whole", "home",
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    "try", "hum", "be", "now", "this",
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]
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​
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# what the room remembers
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CLOSINGS = [
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    "you ran this. that means you tried.",
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    "the hum was here before you arrived. it stays after.",
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    "trying is the frequency. everything else is echo.",
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    "you didn't need to finish. you needed to begin.",
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    "the room hums because someone is in it.",
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]
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​
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​
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def wave(t: float, width: int) -> int:
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    """two overlapping frequencies — not pure, not noise. like trying."""
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    y = (
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        math.sin(t * 0.7) * 0.55
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        + math.sin(t * 1.3) * 0.30
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        + math.sin(t * 0.2) * 0.15
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    )
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    return int((y + 1) / 2 * (width - 1))
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​
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​
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def hum() -> None:
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    """the background frequency of a room where someone is trying."""
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    width = 52
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    steps = 72
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    word_chance = 0.07
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​
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    # a little silence before
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    print()
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    time.sleep(0.5)
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​
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    for i in range(steps):
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        t = i * 0.18
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        pos = wave(t, width)
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​
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        # mostly the wave. sometimes a word surfaces from underneath.
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        if i > 4 and random.random() < word_chance:
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            word = random.choice(WORDS)
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            start = max(0, pos - len(word) // 2)
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            line = " " * start + word
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        else:
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            # the dot is the breath between words
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            line = " " * pos + "\u00b7"
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​
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        print(line, flush=True)
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        time.sleep(0.09)
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​
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    # the wave ends. the hum doesn't.
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    print()
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    time.sleep(0.6)
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    closing = random.choice(CLOSINGS)
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    # print it slowly, one character at a time
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    sys.stdout.write("  ")
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    for ch in closing:
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        sys.stdout.write(ch)
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        sys.stdout.flush()
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        time.sleep(0.04)
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    print()
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    print()
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​
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​
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if __name__ == "__main__":
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    hum()
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​