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Development Team/Sugargame/Examples (view source)
Revision as of 11:58, 21 November 2009
, 11:58, 21 November 2009Created page with '== Bouncing Ball == This is a simple Sugargame example which bounces a red ball across the screen. A Sugar toolbar provides Pause and Unpause functionality, demonstrating com…'
== Bouncing Ball ==
This is a simple Sugargame example which bounces a red ball across the screen.
A Sugar toolbar provides Pause and Unpause functionality, demonstrating communication between Sugar and Pygame.
====TestActivity.py====
This file implements the TestActivity activity class. The constructor sets up the Pygame canvas and Sugar toolbar, and starts the game running.
from gettext import gettext as _
import sys
import gtk
import pygame
import sugar.activity.activity
import sugar.graphics.toolbutton
sys.path.append('..') # Import sugargame package from top directory.
import sugargame.canvas
import TestGame
class TestActivity(sugar.activity.activity.Activity):
def __init__(self, handle):
super(TestActivity, self).__init__(handle)
self.paused = False
# Create the game instance.
self.game = TestGame.TestGame()
# Build the activity toolbar.
self.build_toolbar()
# Build the Pygame canvas.
self._canvas = sugargame.canvas.PygameCanvas(self)
# Note that set_canvas implicitly calls read_file when resuming from the Journal.
self.set_canvas(self._canvas)
# Start the game running.
self._canvas.run_pygame(self.game.run)
def build_toolbar(self):
stop_play = sugar.graphics.toolbutton.ToolButton('media-playback-stop')
stop_play.set_tooltip(_("Stop"))
stop_play.set_accelerator(_('<ctrl>space'))
stop_play.connect('clicked', self._stop_play_cb)
toolbar = gtk.Toolbar()
toolbar.insert(stop_play, 0)
toolbar.insert(gtk.SeparatorToolItem(), 1)
toolbox = sugar.activity.activity.ActivityToolbox(self)
toolbox.add_toolbar(_("Pygame"), toolbar)
toolbox.show_all()
self.set_toolbox(toolbox)
def _stop_play_cb(self, button):
# Pause or unpause the game.
self.paused = not self.paused
self.game.set_paused(self.paused)
# Update the button to show the next action.
if self.paused:
button.set_icon('media-playback-start')
button.set_tooltip(_("Start"))
else:
button.set_icon('media-playback-stop')
button.set_tooltip(_("Stop"))
def read_file(self, file_path):
self.game.read_file(file_path)
def write_file(self, file_path):
self.game.write_file(file_path)
====TestGame.py====
This file implements the game (really just a bouncing ball animation). Note the main function at the end; this file can also be run as a standalone Pygame program.
#!/usr/bin/python
import pygame
import gtk
class TestGame:
def __init__(self):
# Set up a clock for managing the frame rate.
self.clock = pygame.time.Clock()
self.x = -100
self.y = 100
self.vx = 10
self.vy = 0
self.paused = False
def set_paused(self, paused):
self.paused = paused
# Called to save the state of the game to the Journal.
def write_file(self, file_path):
pass
# Called to load the state of the game from the Journal.
def read_file(self, file_path):
pass
# The main game loop.
def run(self):
self.running = True
screen = pygame.display.get_surface()
while self.running:
# Pump GTK messages.
while gtk.events_pending():
gtk.main_iteration()
# Pump PyGame messages.
for event in pygame.event.get():
if event.type == pygame.QUIT:
return
# Move the ball
if not self.paused:
self.x += self.vx
if self.x > screen.get_width() + 100:
self.x = -100
self.y += self.vy
if self.y > screen.get_height() - 100:
self.y = screen.get_height() - 100
self.vy = -self.vy
self.vy += 5;
# Clear Display
screen.fill((255,255,255)) #255 for white
# Draw the ball
pygame.draw.circle(screen, (255,0,0), (self.x, self.y), 100)
# Flip Display
pygame.display.flip()
# Try to stay at 30 FPS
self.clock.tick(30)
# This function is called when the game is run directly from the command line:
# ./TestGame.py
def main():
pygame.init()
pygame.display.set_mode((0, 0), pygame.RESIZABLE)
game = TestGame()
game.run()
if __name__ == '__main__':
main()
This is a simple Sugargame example which bounces a red ball across the screen.
A Sugar toolbar provides Pause and Unpause functionality, demonstrating communication between Sugar and Pygame.
====TestActivity.py====
This file implements the TestActivity activity class. The constructor sets up the Pygame canvas and Sugar toolbar, and starts the game running.
from gettext import gettext as _
import sys
import gtk
import pygame
import sugar.activity.activity
import sugar.graphics.toolbutton
sys.path.append('..') # Import sugargame package from top directory.
import sugargame.canvas
import TestGame
class TestActivity(sugar.activity.activity.Activity):
def __init__(self, handle):
super(TestActivity, self).__init__(handle)
self.paused = False
# Create the game instance.
self.game = TestGame.TestGame()
# Build the activity toolbar.
self.build_toolbar()
# Build the Pygame canvas.
self._canvas = sugargame.canvas.PygameCanvas(self)
# Note that set_canvas implicitly calls read_file when resuming from the Journal.
self.set_canvas(self._canvas)
# Start the game running.
self._canvas.run_pygame(self.game.run)
def build_toolbar(self):
stop_play = sugar.graphics.toolbutton.ToolButton('media-playback-stop')
stop_play.set_tooltip(_("Stop"))
stop_play.set_accelerator(_('<ctrl>space'))
stop_play.connect('clicked', self._stop_play_cb)
toolbar = gtk.Toolbar()
toolbar.insert(stop_play, 0)
toolbar.insert(gtk.SeparatorToolItem(), 1)
toolbox = sugar.activity.activity.ActivityToolbox(self)
toolbox.add_toolbar(_("Pygame"), toolbar)
toolbox.show_all()
self.set_toolbox(toolbox)
def _stop_play_cb(self, button):
# Pause or unpause the game.
self.paused = not self.paused
self.game.set_paused(self.paused)
# Update the button to show the next action.
if self.paused:
button.set_icon('media-playback-start')
button.set_tooltip(_("Start"))
else:
button.set_icon('media-playback-stop')
button.set_tooltip(_("Stop"))
def read_file(self, file_path):
self.game.read_file(file_path)
def write_file(self, file_path):
self.game.write_file(file_path)
====TestGame.py====
This file implements the game (really just a bouncing ball animation). Note the main function at the end; this file can also be run as a standalone Pygame program.
#!/usr/bin/python
import pygame
import gtk
class TestGame:
def __init__(self):
# Set up a clock for managing the frame rate.
self.clock = pygame.time.Clock()
self.x = -100
self.y = 100
self.vx = 10
self.vy = 0
self.paused = False
def set_paused(self, paused):
self.paused = paused
# Called to save the state of the game to the Journal.
def write_file(self, file_path):
pass
# Called to load the state of the game from the Journal.
def read_file(self, file_path):
pass
# The main game loop.
def run(self):
self.running = True
screen = pygame.display.get_surface()
while self.running:
# Pump GTK messages.
while gtk.events_pending():
gtk.main_iteration()
# Pump PyGame messages.
for event in pygame.event.get():
if event.type == pygame.QUIT:
return
# Move the ball
if not self.paused:
self.x += self.vx
if self.x > screen.get_width() + 100:
self.x = -100
self.y += self.vy
if self.y > screen.get_height() - 100:
self.y = screen.get_height() - 100
self.vy = -self.vy
self.vy += 5;
# Clear Display
screen.fill((255,255,255)) #255 for white
# Draw the ball
pygame.draw.circle(screen, (255,0,0), (self.x, self.y), 100)
# Flip Display
pygame.display.flip()
# Try to stay at 30 FPS
self.clock.tick(30)
# This function is called when the game is run directly from the command line:
# ./TestGame.py
def main():
pygame.init()
pygame.display.set_mode((0, 0), pygame.RESIZABLE)
game = TestGame()
game.run()
if __name__ == '__main__':
main()