I am writing a game (frogger clone) where the main character class (inspired
by "astraea.py") inherits from key.KeyStateHandler, and deals with key
events itself. However, in doing so, I find that the key event is not
"consumed" i.e. if I press on a key to move a character, it keeps moving.
This was not the case when the key handling was all done from a window
object. I looked at the astraea.py code and can not see what I am doing
different. I did find a work around ... but I get the feeling I am missing
something obvious. Here's a brief summary of the relevant parts of the
code.
# main script; lots of stuff left out
frog = Frog(world)
@win.event
def on_key_press(symbol, modifiers):
## if symbol == key.LEFT: # this used to work as is
## frog.step(dx = -STEP)
## elif symbol == key.RIGHT:
## frog.step(dx = STEP)
## elif symbol == key.UP:
## frog.jump(dy = JUMP)
## elif symbol == key.DOWN:
## frog.jump(dy = -JUMP)
if symbol == key.ESCAPE:
win.has_exit = True
# new code to shift the relevant key handling to the main character
win.push_handlers(frog)
while not win.has_exit:
win.dispatch_events()
win.clear()
for f in frogs:
f.update()
win.flip()
#########
# code from the script where Frog is defined and updated
class Frog(key.KeyStateHandler):
'''Our hero'''
def __init__(self, world):
super(Frog, self).__init__()
self.world = world
# much stuff deleted
def update(self):
'''simplest case is just drawing == blitting; animation will
follow'''
if self[key.LEFT]:
self.step(dx = -STEP)
self[key.LEFT] = False # this is a workaround
elif self[key.RIGHT]:
self.step(dx = STEP)
elif self[key.UP]:
self.jump(dy = JUMP)
elif self[key.DOWN]:
self.jump(dy = -JUMP)
self.at_rest.blit(self.x, self.y)
#######
Any suggestion would be appreciated.
André
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