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28 changes: 28 additions & 0 deletions submissions/terminal_aquarium/README.md
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This is a project I made for the Terminalcraft YSWS

It has small fish drawn in ASCII art floating around at random through the tank, and will shape itself to the size of your terminal window.

Instructions:

### 1) Make sure you install Python 3

### 2) Clone the repo from GitHub

### 3) Extract the repository file

### 4) Go to the location of the extracted repository in your terminal

### 5) Enter the following command:


```
python3 main.py
```


### 6) Enjoy the aquarium

I chose this project specifically because I love fishtank screen savers. Fish swimming around is just calming to me. So why not make one inside the terminal?

Demo Video: https://youtu.be/bU37wko4UA8
171 changes: 171 additions & 0 deletions submissions/terminal_aquarium/main.py
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import random
import time
import shutil


class Colors:
RESET = "\033[0m"
BLUE = "\033[94m"
CYAN = "\033[96m"
GREEN = "\033[92m"
YELLOW = "\033[93m"
WHITE = "\033[97m"
MAGENTA = "\033[95m"


fish_types = [
{"art": "><((('>", "color": Colors.BLUE},
{"art": "><> ", "color": Colors.MAGENTA},
{"art": "><(((º>", "color": Colors.YELLOW},
{"art": "><> ", "color": Colors.CYAN},
{"art": "><((°> ", "color": Colors.GREEN},
{"art": "<°)))>< ", "color": Colors.BLUE},
]

background_art = [
# Rocks
{"art": [" _/\\_", " / \\", "/_/\\/\\_\\"], "min_width": 10, "color": Colors.WHITE},
{"art": [" __", " _/ \\", "/ \\", "\\_/\\_/"], "min_width": 8, "color": Colors.WHITE},
{"art": [" ___", " / \\", " / \\", "/_/\\_/\\_"], "min_width": 9, "color": Colors.WHITE},
# Coral
{"art": [" |", " /|\\", "/_|_\\"], "min_width": 5, "color": Colors.MAGENTA},
{"art": [" |", " /|", "/ |"], "min_width": 4, "color": Colors.MAGENTA},
# Seaweed
{"art": [" /\\", " / \\", " /_/\\_\\"], "min_width": 7, "color": Colors.GREEN},
{"art": [" |", " /|", "/ |"], "min_width": 4, "color": Colors.GREEN},
{"art": [" |", " |/", " /|"], "min_width": 3, "color": Colors.GREEN},
# Starfish
{"art": [" *", " /|\\", "<-O->", " \\|/"], "min_width": 5, "color": Colors.YELLOW},
# Pebbles
{"art": [" . .", " ..", " ."], "min_width": 4, "color": Colors.WHITE},
]

class Fish:

def __init__(self, y, x, direction, art, color):
self.y = y
self.x = x
self.direction = direction # 1 for right, -1 for left
self.art = art if direction == 1 else art[::-1]
self.color = color

def move(self, width, height):
self.x += self.direction
# Bounce off walls
if self.x < 0:
self.direction = 1
self.art = self.art[::-1]
self.x = 0
elif self.x + len(self.art) > width:
self.direction = -1
self.art = self.art[::-1]
self.x = width - len(self.art)
# Randomly move up/down
if random.random() < 0.1:
self.y += random.choice([-1, 1])
self.y = max(0, min(height - 1, self.y))

class Bubble:
def __init__(self, x, y):
self.x = x
self.y = y
# --- New: Bubbles are now cyan ---
self.color = Colors.CYAN

def move(self):
self.y -= 1

def clear():

print("\033[H", end="")

def place_background(width, height):

bg_map = [[(" ", Colors.RESET) for _ in range(width)] for _ in range(height)]
num_items = random.randint(3, 5)
for _ in range(num_items):
art_obj = random.choice(background_art)
art = art_obj["art"]
color = art_obj["color"]
art_height = len(art)
art_width = max(len(line) for line in art)
if art_width > width:
continue
x = random.randint(0, width - art_width)
y = height - art_height
for dy, line in enumerate(art):
for dx, ch in enumerate(line):
if ch != " ":
bg_map[y + dy][x + dx] = (ch, color)
return bg_map

def draw_aquarium(fishes, bubbles, bg_map, width, height):
aquarium = [row[:] for row in bg_map]

for bubble in bubbles:
if 0 <= bubble.y < height and 0 <= bubble.x < width:
aquarium[bubble.y][bubble.x] = ("o", bubble.color)

for fish in fishes:
for i, ch in enumerate(fish.art):
fx = fish.x + i
if 0 <= fx < width and 0 <= fish.y < height:
aquarium[fish.y][fx] = (ch, fish.color)

output_str = []
output_str.append(Colors.BLUE + "+" + "-" * width + "+" + Colors.RESET)
for row in aquarium:
line_str = [Colors.BLUE + "|" + Colors.RESET]
current_color = Colors.RESET
for char, color in row:
if color != current_color:
line_str.append(color)
current_color = color
line_str.append(char)

if current_color != Colors.RESET:
line_str.append(Colors.RESET)
line_str.append(Colors.BLUE + "|" + Colors.RESET)
output_str.append("".join(line_str))
output_str.append(Colors.BLUE + "+" + "-" * width + "+" + Colors.RESET)

print("\n".join(output_str))

def main():
width, height = shutil.get_terminal_size((80, 24))
width -= 2
height -= 2
num_fish = min(8, height // 2)
fishes = []
for _ in range(num_fish):
y = random.randint(0, height - 4)
x = random.randint(0, width - 10)
direction = random.choice([1, -1])
fish_obj = random.choice(fish_types)
fishes.append(Fish(y, x, direction, fish_obj["art"], fish_obj["color"]))

bg_map = place_background(width, height)
bubbles = []
try:
while True:
if random.random() < 0.15:
bx = random.randint(1, width - 2)
bubbles.append(Bubble(bx, height - 1))

for bubble in bubbles:
bubble.move()
bubbles = [b for b in bubbles if b.y >= 0]

clear()
draw_aquarium(fishes, bubbles, bg_map, width, height)

for fish in fishes:
fish.move(width, height)

time.sleep(0.2)
except KeyboardInterrupt:

print(f"\n{Colors.RESET}Aquarium closed.")

if __name__ == "__main__":
main()