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187 | """
Move Sprite with Joystick
Simple program to show basic sprite usage.
Artwork from https://kenney.nl
If Python and Arcade are installed, this example can be run from the command line with:
python -m arcade.examples.sprite_move_joystick
"""
import arcade
import os
SPRITE_SCALING = 0.5
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
SCREEN_TITLE = "Move Sprite with Joystick Example"
MOVEMENT_SPEED = 5
DEAD_ZONE = 0.05
class Player(arcade.Sprite):
""" Player sprite """
def __init__(self, filename, scale):
super().__init__(filename, scale)
# Get list of game controllers that are available
joysticks = arcade.get_joysticks()
# If we have any...
if joysticks:
# Grab the first one in the list
self.joystick = joysticks[0]
# Open it for input
self.joystick.open()
# Push this object as a handler for joystick events.
# Required for the on_joy* events to be called.
self.joystick.push_handlers(self)
else:
# Handle if there are no joysticks.
print("There are no joysticks, plug in a joystick and run again.")
self.joystick = None
def update(self):
""" Move the player """
# If there is a joystick, grab the speed.
if self.joystick:
# x-axis
self.change_x = self.joystick.x * MOVEMENT_SPEED
# Set a "dead zone" to prevent drive from a centered joystick
if abs(self.change_x) < DEAD_ZONE:
self.change_x = 0
# y-axis
self.change_y = -self.joystick.y * MOVEMENT_SPEED
# Set a "dead zone" to prevent drive from a centered joystick
if abs(self.change_y) < DEAD_ZONE:
self.change_y = 0
# Move the player
self.center_x += self.change_x
self.center_y += self.change_y
# Keep from moving off-screen
if self.left < 0:
self.left = 0
elif self.right > SCREEN_WIDTH - 1:
self.right = SCREEN_WIDTH - 1
if self.bottom < 0:
self.bottom = 0
elif self.top > SCREEN_HEIGHT - 1:
self.top = SCREEN_HEIGHT - 1
# noinspection PyMethodMayBeStatic
def on_joybutton_press(self, _joystick, button):
""" Handle button-down event for the joystick """
print("Button {} down".format(button))
# noinspection PyMethodMayBeStatic
def on_joybutton_release(self, _joystick, button):
""" Handle button-up event for the joystick """
print("Button {} up".format(button))
# noinspection PyMethodMayBeStatic
def on_joyhat_motion(self, _joystick, hat_x, hat_y):
""" Handle hat events """
print("Hat ({}, {})".format(hat_x, hat_y))
class MyGame(arcade.Window):
"""
Main application class.
"""
def __init__(self, width, height, title):
"""
Initializer
"""
# Set the working directory (where we expect to find files) to the same
# directory this .py file is in. You can leave this out of your own
# code, but it is needed to easily run the examples using "python -m"
# as mentioned at the top of this program.
file_path = os.path.dirname(os.path.abspath(__file__))
os.chdir(file_path)
# Call the parent class initializer
super().__init__(width, height, title)
# Variables that will hold sprite lists
self.all_sprites_list = None
# Set up the player info
self.player_sprite = None
# Set the background color
arcade.set_background_color(arcade.color.AMAZON)
def setup(self):
""" Set up the game and initialize the variables. """
# Sprite lists
self.all_sprites_list = arcade.SpriteList()
# Set up the player
self.player_sprite = Player(":resources:images/animated_characters/female_person/"
"femalePerson_idle.png", SPRITE_SCALING)
self.player_sprite.center_x = 50
self.player_sprite.center_y = 50
self.all_sprites_list.append(self.player_sprite)
def on_draw(self):
"""
Render the screen.
"""
# This command has to happen before we start drawing
self.clear()
# Draw all the sprites.
self.all_sprites_list.draw()
def on_update(self, delta_time):
""" Movement and game logic """
# Call update on all sprites (The sprites don't do much in this
# example though.)
self.all_sprites_list.update()
def on_key_press(self, key, modifiers):
"""Called whenever a key is pressed. """
if key == arcade.key.UP:
self.player_sprite.change_y = MOVEMENT_SPEED
elif key == arcade.key.DOWN:
self.player_sprite.change_y = -MOVEMENT_SPEED
elif key == arcade.key.LEFT:
self.player_sprite.change_x = -MOVEMENT_SPEED
elif key == arcade.key.RIGHT:
self.player_sprite.change_x = MOVEMENT_SPEED
def on_key_release(self, key, modifiers):
"""Called when the user releases a key. """
if key == arcade.key.UP or key == arcade.key.DOWN:
self.player_sprite.change_y = 0
elif key == arcade.key.LEFT or key == arcade.key.RIGHT:
self.player_sprite.change_x = 0
def main():
""" Main function """
window = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
window.setup()
arcade.run()
if __name__ == "__main__":
main()
|