410 lines
12 KiB
Python
410 lines
12 KiB
Python
"""
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Threaded bouncing boxes with frame buffer
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Uses a single shot function for second core SPI handler.
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This cleans itself when the function exits removing the
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need for a garbage collection call.
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"""
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from gc import collect
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collect()
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# import libraries
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import math
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import array
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from machine import Pin, SPI
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import framebuf
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from random import random, seed, randint
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from utime import sleep_us, ticks_cpu, ticks_us
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import _thread
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import st7789 as st7789
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from joystick import Joystick
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# ============================
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# Helper Functions
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# ============================
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def color565(r, g, b):
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"""Convert RGB888 to RGB565."""
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return (((g & 0b00011100) << 3) + ((r & 0b11111000) >> 3) << 8) + (b & 0b11111000) + ((g & 0b11100000) >> 5)
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RED = color565(0, 0, 255)
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GREEN = color565(0, 255, 0)
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YELLOW = color565(0, 255, 255)
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BLACK = color565(0, 0, 0)
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WHITE = color565(255, 255, 255)
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def clear_display():
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"""Clear the display."""
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global fbuf, display, buffer, buffer_width, buffer_height
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fbuf.fill(BLACK)
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display.blit_buffer(buffer, 0, 0, buffer_width, buffer_height)
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# ============================
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# Constants and Configuration
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# ============================
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SCREEN_WIDTH = 135
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SCREEN_HEIGHT = 240
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SCREEN_ROTATION = 1
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PADDLE_WIDTH = 70
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PADDLE_HEIGHT = 10
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PADDLE_COLOR = WHITE
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PADDLE_SPEED = 10
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BRICK_WIDTH = 30
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BRICK_HEIGHT = 8
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BRICK_PADDING = 4
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BRICKS_PER_ROW = 7
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ROWS = 4
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BALL_SPEED = 3
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SPLASH_WIDTH = 8
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SPLASH_HEIGHT = 5
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SPLASH_PADDING = 2
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# ============================
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# set up SPI and display
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spi = SPI(1,
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baudrate=31250000,
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polarity=1,
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phase=1,
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bits=8,
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firstbit=SPI.MSB,
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sck=Pin(10),
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mosi=Pin(11))
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display = st7789.ST7789(
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spi,
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SCREEN_WIDTH,
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SCREEN_HEIGHT,
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reset=Pin(12, Pin.OUT),
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cs=Pin(9, Pin.OUT),
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dc=Pin(8, Pin.OUT),
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backlight=Pin(13, Pin.OUT),
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rotation=SCREEN_ROTATION)
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# FrameBuffer needs 2 bytes for every RGB565 pixel
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buffer_width = SCREEN_HEIGHT
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buffer_height = SCREEN_WIDTH + 1
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buffer_height = 136
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buffer = bytearray(buffer_width * buffer_height * 2)
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fbuf = framebuf.FrameBuffer(buffer, buffer_width, buffer_height, framebuf.RGB565)
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render_frame = False
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# ============================
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# CLASSES
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# ============================
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class Paddle:
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def __init__(self):
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self.x = (SCREEN_HEIGHT - PADDLE_WIDTH) // 2
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self.y = SCREEN_WIDTH - PADDLE_HEIGHT - 5
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self.width = PADDLE_WIDTH
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self.height = PADDLE_HEIGHT
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self.speed = PADDLE_SPEED
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def move(self, direction: int):
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"""
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Move paddle left or right.
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Args: direction: -1 for left, 1 for right
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"""
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self.x += self.speed * direction
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if self.x < 0:
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self.x = 0
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elif self.x > SCREEN_HEIGHT - self.width:
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self.x = SCREEN_HEIGHT - self.width
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def draw(self):
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"""Draw paddle."""
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global fbuf
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fbuf.fill_rect(self.x, self.y, self.width, self.height, PADDLE_COLOR)
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def update(self):
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"""Update paddle position."""
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global joystick
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if joystick.joy_left() == 0:
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self.move(-1)
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elif joystick.joy_right() == 0:
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self.move(1)
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self.draw()
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def hit(self, ball: Ball) -> bool:
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"""Check if the ball hits the paddle."""
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return (
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self.x < ball.x < self.x + self.width
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and self.y < ball.y < self.y + self.height)
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class Ball:
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def __init__(self, paddle: Paddle, radius: int, color: int):
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"""
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Initialize the ball.
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Args:
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paddle (Paddle): The paddle object to position the ball on.
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radius (int): Radius of the ball.
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color (int): RGB565 color value of the ball.
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"""
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self.radius = radius
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self.color = color
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self.reset_pos(paddle)
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self.x_speed = BALL_SPEED
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self.y_speed = -BALL_SPEED
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# Position the ball in the middle of the paddle
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self.x = paddle.x + (paddle.width // 2)
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self.y = paddle.y - radius - 2 # Place the ball just above the paddle
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def reset_pos(self, paddle: Paddle):
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"""Reset ball position to the center of the screen.
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Args: Paddle: The paddle object to position the ball on.
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"""
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self.x = SCREEN_HEIGHT // 2
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self.y = SCREEN_WIDTH // 2
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self.x_speed = BALL_SPEED
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self.y_speed = -BALL_SPEED
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def update_pos(self):
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"""Update ball position."""
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self.x += self.x_speed
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self.y += self.y_speed
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# Bounce off left or right screen edge
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if self.x < 0:
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self.x = 0
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self.x_speed = -self.x_speed
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elif self.x > SCREEN_HEIGHT:
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self.x = SCREEN_HEIGHT
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self.x_speed = -self.x_speed
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# Bounce off top screen edge
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if self.y < BRICK_PADDING + self.radius:
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self.y = BRICK_PADDING + self.radius
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self.y_speed = -self.y_speed
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# Drop through bottom screen edge & return True to indicate we lose a life
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if self.y > SCREEN_WIDTH:
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self.y = SCREEN_WIDTH
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self.y_speed = -self.y_speed
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return True
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def draw(self):
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"""Draw ball."""
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global fbuf
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fbuf.ellipse(self.x, self.y, self.radius, self.radius, self.color, True)
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class Brick:
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def __init__(self, x: int, y: int, width: int, height: int, color: int):
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"""
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Initialize a brick.
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Args: x (int): x-coordinate of the brick.
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y (int): y-coordinate of the brick.
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width (int): width of the brick.
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height (int): height of the brick.
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color (int): color of the brick."""
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self.x = x
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self.y = y
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self.width = width
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self.height = height
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self.color = color
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def draw(self):
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"""Draw brick."""
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global fbuf
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fbuf.fill_rect(self.x, self.y, self.width, self.height, self.color)
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class BrickRow:
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def __init__(self, brick_width: int, brick_height: int, padding:int, offset_top: int, color: int):
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"""
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Initialize a row of bricks.
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Args: brick_width (int): width of each brick.
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brick_height (int): height of each brick.
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padding (int): padding between bricks.
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offset_top (int): y-coordinate of the top of the row.
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color (int): color of the bricks.
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"""
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self.brick_width = brick_width
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self.brick_height = brick_height
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self.color = color
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self.padding = padding
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self.offset_top = offset_top
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self.bricks = [Brick(padding + i * (brick_width + padding), offset_top, brick_width, brick_height, color) for i in range(BRICKS_PER_ROW)]
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self.brick_x = [padding + i * (brick_width + padding) for i in range(BRICKS_PER_ROW)]
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self.brick_y = [offset_top] * BRICKS_PER_ROW
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def draw(self):
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global fbuf
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for brick in self.bricks:
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if brick is not None:
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brick.draw()
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def hit(self, ball: Ball) -> bool:
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"""
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Check if the ball hits any brick in the row and remove it if hit.
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Args: ball (Ball): The ball object to check for collision.
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Returns: bool: True if the ball hits a brick, False otherwise.
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"""
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for i, brick in enumerate(self.bricks):
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if brick is not None:
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if (brick.x < ball.x < brick.x + brick.width) and (brick.y < ball.y < brick.y + brick.height):
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# Remove the brick by setting it to None
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self.bricks[i] = None
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return True
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return False
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def splash_screen(data_rows: list[int]):
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"""
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Display a splash screen using the bits in the data_rows.
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Args: data_rows (list[int]): List of hex values to display as blocks.
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"""
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global fbuf, buffer, buffer_width, buffer_height, joystick, render_frame
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fbuf.fill(BLACK)
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start_x = 5
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start_y = 20
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for row_index, hex_value in enumerate(data_rows):
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binary = bin(hex_value)[2:] # Convert to binary
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binary = '{:0>22}'.format(binary) # Pad to 22 columns
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if 0 <= row_index <= 1:
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color = RED
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elif 2 <= row_index <= 4:
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color = YELLOW
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else:
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color = GREEN
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for bit_index, bit in enumerate(binary):
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if bit == '1': # Only draw a block for '1'
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x = start_x + bit_index * (SPLASH_WIDTH + SPLASH_PADDING)
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y = start_y + row_index * (SPLASH_WIDTH + SPLASH_PADDING)
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fbuf.fill_rect(x, y, SPLASH_WIDTH, SPLASH_HEIGHT, color)
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fbuf.text("Press A to start", 5, 100, WHITE)
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fbuf.text("Press B to exit", 5, 120, WHITE)
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# Wait for the frame to be rendered & update the display
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while render_frame:
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pass
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display.blit_buffer(buffer, 0, 0, buffer_width, buffer_height)
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def main_loop():
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global fbuf, buffer, buffer_width, buffer_height, joystick
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global render_frame
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bricks = []
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for row in range(ROWS):
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if row == 0:
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color = RED
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elif row == 1:
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color = YELLOW
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else:
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color = GREEN
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bricks.append(
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BrickRow(BRICK_WIDTH,
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BRICK_HEIGHT,
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BRICK_PADDING,
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10 + row * (BRICK_HEIGHT + BRICK_PADDING),
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color))
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score = 0
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lives = 3
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paddle = Paddle()
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ball = Ball(paddle, radius=5, color=WHITE)
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# Create a list of small balls to represent lives
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lives_balls = []
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for i in range(0, lives):
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life_ball = Ball(paddle, radius=3, color=WHITE)
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life_ball.x = 5 + (i - 1) * 7
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life_ball.y = 7
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life_ball.x_speed = 0
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lives_balls.append(life_ball)
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render_frame = False
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state = 0 # 0 = start screen, 1 = game, 2 = game over, 3 = game win
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try:
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while True:
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if state == 0: # Startup screen
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splash_screen([0x060046, 0x056B54, 0x054A64, 0x064A46, 0x054A62, 0x054A52, 0x074B56])
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if joystick.button_a() == 0: # Transition to game state when A is pressed
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state = 1
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lives = 3
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score = 0
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elif state == 1 and lives > 0 and score < 28: # Game state
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paddle.update()
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if ball.update_pos(): # If ball is out of bounds, lose a life and reset ball position
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lives -= 1
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lives_balls.pop()
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ball.reset_pos(paddle) # Reset ball position to the center of the screen
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if paddle.hit(ball):
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ball.y_speed = -ball.y_speed
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for row in bricks:
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if row.hit(ball):
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ball.y_speed = -ball.y_speed
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score += 1
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break
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for i in range(1, len(lives_balls)):
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lives_balls[i].draw()
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for row in bricks:
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row.draw()
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ball.draw()
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paddle.draw()
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while render_frame:
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pass
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render_frame = True
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# Start SPI handler on core 1
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spi_thread = _thread.start_new_thread(render_thread, ())
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if state == 1 and (lives == 0 or score == 28): # Game over or win:
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if lives > 0:
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state= 3 # Winning state
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else:
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state = 2 # Losing state
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if state == 2: # Game over screen
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splash_screen([0x0276DC, 0x025490, 0x025494, 0x0256DC, 0x025298, 0x025294, 0x0376D4])
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if state == 3: # Game win screen
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splash_screen([0x04548, 0x04548, 0x04568, 0x05578, 0x05558, 0x05548, 0x03948])
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if state != 1 and joystick.button_a() == 0: # Transition to start state when A is pressed
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state = 0
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sleep_us(1_000_000) # Debounce delay
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if joystick.button_b() == 0: # Exit game when B is pressed
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break
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except KeyboardInterrupt:
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pass
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def render_thread():
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global fbuf, buffer, buffer_width, buffer_height, render_frame, spi
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global display, SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_ROTATION
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display.blit_buffer(buffer, 0, 0, buffer_width, buffer_height)
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fbuf.fill(0)
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render_frame = False
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# thread will exit and self clean removing need for garbage collection
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if __name__ == "__main__":
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joystick = Joystick()
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main_loop()
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# Clean up
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clear_display()
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buffer = None
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fbuf = None
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