Pygame – Keyboard Events
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Pygame recognizes KEYUP and KEYDOWN events. The pygame.key module defines functions useful for handling keyboard interaction. pygame.KEYDOWN and pygame.KEYUP events are inserted in event queue when the keys are pressed and released. key attribute is an integer ID representing every key on the keyboard.
import pygame, sys
pygame.init()
screen = pygame.display.set_mode((640, 480))
pygame.display.set_caption("Hello World")
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN:
key=pygame.key.name(event.key)
print (key, "Key is pressed")
if event.type == pygame.KEYUP:
key=pygame.key.name(event.key)
print (key, "Key is released")
Run the above code and press various keys while the Pygame window is active. Following is a sample output on Python console.
q Key is pressed q Key is released right shift Key is released 1 Key is pressed 1 Key is released enter Key is pressed enter Key is released backspace Key is pressed backspace Key is released x Key is pressed x Key is released home Key is pressed home Key is released f1 Key is pressed f1 Key is released left Key is pressed left Key is released right Key is pressed right Key is released up Key is pressed up Key is released down Key is pressed down Key is released
As we see, event.key attribute returns a unique identifier associated with each key. The arrow keys left, right, up and down are used very often in a game situation. We can right appropriate logic if a particular key press is detected.
Other useful attributes in pygame.key module are listed below −
| pygame.key.get_pressed | get the state of all keyboard buttons |
| pygame.key.get_mods | determine which modifier keys are being held |
| pygame.key.set_repeat | control how held keys are repeated |
| pygame.key.get_repeat | see how held keys are repeated |
| pygame.key.name | get the name of a key identifier |
| pygame.key.key_code | get the key identifier from a key name |
| pygame.key.start_text_input | start handling Unicode text input events |
| pygame.key.stop_text_input | stop handling Unicode text input events |
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