84 lines
2.8 KiB
Python
84 lines
2.8 KiB
Python
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# Joystick / Gamepad example
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# STOP_FIRE from https://wiki.libsdl.org/SDL_JoyAxisEvent
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from kivy.app import App
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from kivy.clock import Clock
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from kivy.uix.widget import Widget
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from kivy.core.window import Window
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from kivy.properties import ObjectProperty, ListProperty
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class Listener(Widget):
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# fire / trigger axis
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FIRE = (2, 5)
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STOP_FIRE = -32767
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# min value for user to actually trigger axis
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OFFSET = 15000
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# current values + event instance
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VALUES = ListProperty([])
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HOLD = ObjectProperty(None)
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def __init__(self, **kwargs):
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super(Listener, self).__init__(**kwargs)
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# get joystick events first
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Window.bind(on_joy_hat=self.on_joy_hat)
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Window.bind(on_joy_ball=self.on_joy_ball)
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Window.bind(on_joy_axis=self.on_joy_axis)
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Window.bind(on_joy_button_up=self.on_joy_button_up)
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Window.bind(on_joy_button_down=self.on_joy_button_down)
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# show values in console
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def print_values(self, *args):
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print(self.VALUES)
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def joy_motion(self, event, id, axis, value):
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# HAT first, returns max values
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if isinstance(value, tuple):
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if not value[0] and not value[1]:
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Clock.unschedule(self.HOLD)
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else:
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self.VALUES = [event, id, axis, value]
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self.HOLD = Clock.schedule_interval(self.print_values, 0)
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return
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# unschedule if at zero or at minimum (FIRE)
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if axis in self.FIRE and value < self.STOP_FIRE:
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Clock.unschedule(self.HOLD)
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return
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elif abs(value) < self.OFFSET or self.HOLD:
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Clock.unschedule(self.HOLD)
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# schedule if over OFFSET (to prevent accidental event with low value)
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if (axis in self.FIRE and value > self.STOP_FIRE or
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axis not in self.FIRE and abs(value) >= self.OFFSET):
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self.VALUES = [event, id, axis, value]
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self.HOLD = Clock.schedule_interval(self.print_values, 0)
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# replace window instance with identifier
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def on_joy_axis(self, win, stickid, axisid, value):
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self.joy_motion('axis', stickid, axisid, value)
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def on_joy_ball(self, win, stickid, ballid, xvalue, yvalue):
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self.joy_motion('ball', stickid, ballid, (xvalue, yvalue))
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def on_joy_hat(self, win, stickid, hatid, value):
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self.joy_motion('hat', stickid, hatid, value)
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def on_joy_button_down(self, win, stickid, buttonid):
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print('button_down', stickid, buttonid)
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def on_joy_button_up(self, win, stickid, buttonid):
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print('button_up', stickid, buttonid)
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class JoystickApp(App):
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def build(self):
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return Listener()
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if __name__ == '__main__':
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JoystickApp().run()
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