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POMouse lag in pygame
 

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  1. POMouse lag in pygame
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    <p>I am making a graphical interface with pygame. The program is generally running fast, but whenever I make a keypress, the mouse refuses to move for half a second. I am lost for ideas, wondering if anyone could give me some direction.</p> <p>Here's a general sense of how my code works, I do think it's a problem with the top level main loop, the bindings or the infrestructure because the problem arises consistently with every key-bound function:</p> <pre><code> #######PERPETUAL ACTIONS# _perpetual_actions = [] def start_doing(function,insertAt=None): global _perpetual_actions if insertAt==None: insertAt=len(_perpetual_actions) _perpetual_actions.insert(insertAt,function) def stop_doing(function): global _perpetual_actions if _perpetual_actions.count(function): _perpetual_actions.remove(function) def do_perpetual_actions(): global _perpetual_actions for action in _perpetual_actions: action() def print_perpetual_actions(): global _perpetual_actions for action in _perpetual_actions: print action.__name__ ######BINDING INFRASTRUCTURE######## _bindings_dict = { } def get_action(key, mod): try: action = _bindings_dict[(key,mod)] except KeyError: action = None return action def get_binding(action_to_find): for event, action in _bindings_dict.iteritems(): if action == action_to_find: return event return None def bind(event, action): _bindings_dict[event] = action def unbind(event): _bindings_dict.pop(event) def swap_bindings(newBindings): _bindings_dict = newBindings ####MAIN LOOP#### if '-t' in sys.argv: test() while True: for event in pygame.event.get(): if event.type == MOUSEMOTION: mousex, mousey = event.pos mouse.x = mousex mouse.y = mousey elif event.type == KEYDOWN: action = get_action(event.key,event.mod) if not action == None: action() elif event.type == KEYUP: action = get_action(-event.key,event.mod) if not action == None: action() elif event.type == QUIT: quit() do_perpetual_actions() clock.tick(40) </code></pre> <p>The binding dictionary is defined later and at some point in the future, will be modifiable by the user while the program is running. If you have an unrelated recommendation let me know, I'm just starting out and any pygame advice would be appreciated :)</p>
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    1. UShedgehogrider
    1. UShedgehogrider
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    1. COIs the elif on the 3rd line in the main loop in your original code too?
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      1. POMouse lag in pygame
      1. UScerealy
    2. COAh, crap, I removed an if blcok for testing and forgot to add it back in. Thanks cerealy, nice catch.
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      1. POMouse lag in pygame
      1. UShedgehogrider
    3. COone thing that can speed up performance if defining a `main` function and using `if __name__=="__main__": <newline> main()` at the end of your code, this will push your main loop out of global scope and make it run faster, might semi-fix your problem.
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      1. POMouse lag in pygame
      1. USSerdalis
 

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