83 lines
3.3 KiB
Python
83 lines
3.3 KiB
Python
import pygame
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import importlib.util
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import pocket_friends.game_files.io.gpio_handler as gpio_handler
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class InputHandler:
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"""
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Class that is implemented into surfaces in order to control the
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pressing of buttons on both the real hardware and on a keyboard.
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"""
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def __init__(self, pygame_clock):
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self.clock = pygame_clock
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# If not on actual hardware, fake the GPIO in order to get it working correctly.
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try:
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importlib.util.find_spec('RPi.GPIO')
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import RPi.GPIO as GPIO
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self.on_hardware = True
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except ImportError:
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import pocket_friends.game_files.io.fake_gpio as GPIO
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self.on_hardware = False
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self.last_input_tick = 0
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def create_event(self, pressed_button):
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"""
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Creates a pygame event with a given keyboard code
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:param pressed_button:
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"""
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# Register a button click so long as the last button click happened no less than two frames ago
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if pygame.time.get_ticks() - self.last_input_tick > self.clock.get_time() * 2 or not self.on_hardware:
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pygame.event.post(pygame.event.Event(pygame.KEYDOWN, {'key': pressed_button}))
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pygame.event.post(pygame.event.Event(pygame.KEYUP, {'key': pressed_button}))
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self.last_input_tick = pygame.time.get_ticks()
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def handle_gpio(self):
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"""
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Handles getting GPIO button presses and making a pygame event when a press is detected.
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"""
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for pressed_button in gpio_handler.BUTTONS:
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code = gpio_handler.BUTTONS.get(pressed_button)
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# Check if a button has been pressed. If it has, create a pygame event for it.
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if gpio_handler.get_press(code):
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self.create_event(code)
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def keyboard_handler(self):
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"""
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Simulates key presses to GPIO button presses. Also handles quitting the game.
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"""
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# Checks if a corresponding keyboard key has been pressed. If it has, emulate a button press.
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for keyboard_event in pygame.event.get():
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if keyboard_event.type == pygame.QUIT:
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running = False
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if keyboard_event.type == pygame.KEYDOWN:
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if keyboard_event.key == pygame.K_a:
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self.create_event(gpio_handler.BUTTONS.get('a'))
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if keyboard_event.key == pygame.K_b:
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self.create_event(gpio_handler.BUTTONS.get('b'))
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if keyboard_event.key == pygame.K_PERIOD:
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self.create_event(gpio_handler.BUTTONS.get('j_i'))
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if keyboard_event.key == pygame.K_RIGHT:
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self.create_event(gpio_handler.BUTTONS.get('j_r'))
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if keyboard_event.key == pygame.K_LEFT:
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self.create_event(gpio_handler.BUTTONS.get('j_l'))
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if keyboard_event.key == pygame.K_DOWN:
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self.create_event(gpio_handler.BUTTONS.get('j_d'))
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if keyboard_event.key == pygame.K_UP:
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self.create_event(gpio_handler.BUTTONS.get('j_u'))
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if keyboard_event.key == pygame.K_ESCAPE:
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running = False
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def update(self):
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"""
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Run the input handler and check for inputs.
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"""
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if self.on_hardware:
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self.handle_gpio()
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else:
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self.keyboard_handler()
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