The main code.py for the project is fairly small and simple. The bulk of the game logic and functionality is handled in the helper classes, which you can learn about over on their own page.
The code.py script initializes the ChomperGame helper class and Qualia display driver library, as well as the digitalio input on pin A0.
In the main loop of the code, it calls game_tick() on the ChomperGame process a tick of action within the game. Lastly, it polls the button digitalio input, and when pressed, accesses the Player object via the ChomperGame and changes its direction to the opposite of whichever way it was headed. If the Player had already been nabbed by a Ghost and the game was over, then the button press will start up a new round to play again.
# SPDX-FileCopyrightText: 2024 Tim Cocks
#
# SPDX-License-Identifier: MIT
"""
1D Chomper
Circuitpython based 1 dimensional pacman style game inspired by Paku Paku.
"""
import board
from adafruit_qualia import Qualia
from adafruit_qualia.graphics import Displays
from chomper_1d_lib import ChomperGame, Entity
from digitalio import DigitalInOut, Direction, Pull
# initialize the physical button on A0
btn = DigitalInOut(board.A0)
btn.direction = Direction.INPUT
btn.pull = Pull.DOWN
btn_prev_val = btn.value
# Create the Qualia object for the 240x960 display PID 5799
qualia = Qualia(Displays.BAR240X960)
# OR create the Qualia object for the 320x960 display PID 5805
# qualia = Qualia(Displays.BAR320X960)
display = qualia.display
# Landscape orientation, mounted with ribbon cable coming off the left side of display.
display.rotation = 270
# Create the Game object, passing in the display size
game_obj = ChomperGame((display.width, display.height))
# set the Group scaling to 3x
game_obj.scale = 3
# down a little bit from top of display
game_obj.y = 10
# start the player moving to the right
game_obj.player_entity.direction = Entity.DIRECTION_RIGHT
# set game_obj as the root_group to show it on the Display.
display.root_group = game_obj
# main loop
while True:
game_obj.game_tick()
btn_cur_value = btn.value
# if the button was pressed
if btn_cur_value and not btn_prev_val:
# If the game is currently playing
if not game_obj.game_over:
# change the Player to the opposite direction
if game_obj.player_entity.direction == Entity.DIRECTION_LEFT:
game_obj.player_entity.direction = Entity.DIRECTION_RIGHT
else:
game_obj.player_entity.direction = Entity.DIRECTION_LEFT
# If the game is over
else:
# Restart to play again
game_obj.restart()
# update button variable for debouncing
btn_prev_val = btn_cur_value
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