def run():
sdl2ext.init()
window = sdl2ext.Window("The Pong Game", size=(800, 600))
window.show()
if "-hardware" in sys.argv:
print("Using hardware acceleration")
renderer = sdl2ext.RenderContext(window)
factory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
else:
print("Using software rendering")
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
# Create the paddles - we want white ones. To keep it easy enough for us,
# we create a set of surfaces that can be used for Texture- and
# Software-based sprites.
sp_paddle1 = factory.from_color(WHITE, size=(20, 100))
sp_paddle2 = factory.from_color(WHITE, size=(20, 100))
sp_ball = factory.from_color(WHITE, size=(20, 20))
world = World()
movement = MovementSystem(0, 0, 800, 600)
collision = CollisionSystem(0, 0, 800, 600)
aicontroller = TrackingAIController(0, 600)
if factory.sprite_type == sdl2ext.SOFTWARE:
spriterenderer = SoftwareRenderer(window)
else:
spriterenderer = TextureRenderer(renderer)
world.add_system(aicontroller)
world.add_system(movement)
world.add_system(collision)
world.add_system(spriterenderer)
player1 = Player(world, sp_paddle1, 0, 250)
player2 = Player(world, sp_paddle2, 780, 250, True)
ball = Ball(world, sp_ball, 390, 290)
ball.velocity.vx = -BALL_SPEED
collision.ball = ball
aicontroller.ball = ball
running = True
while running:
for event in sdl2ext.get_events():
if event.type == sdlevents.SDL_QUIT:
running = False
break
if event.type == sdlevents.SDL_KEYDOWN:
if event.key.keysym.sym == sdlkc.SDLK_UP:
player1.velocity.vy = -PADDLE_SPEED
elif event.key.keysym.sym == sdlkc.SDLK_DOWN:
player1.velocity.vy = PADDLE_SPEED
elif event.type == sdlevents.SDL_KEYUP:
if event.key.keysym.sym in (sdlkc.SDLK_UP, sdlkc.SDLK_DOWN):
player1.velocity.vy = 0
sdltimer.SDL_Delay(10)
world.process()
def test_SpriteFactory(self):
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
assert isinstance(factory, sdl2ext.SpriteFactory)
assert factory.default_args == {}
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE, bananas="tasty")
assert isinstance(factory, sdl2ext.SpriteFactory)
assert factory.default_args == {"bananas": "tasty"}
window = sdl2ext.Window("Test", size=(1, 1))
renderer = sdl2ext.Renderer(window)
factory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
assert isinstance(factory, sdl2ext.SpriteFactory)
factory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
assert isinstance(factory, sdl2ext.SpriteFactory)
assert factory.default_args == {"renderer": renderer}
with pytest.raises(ValueError):
sdl2ext.SpriteFactory("Test")
with pytest.raises(ValueError):
sdl2ext.SpriteFactory(-456)
with pytest.raises(ValueError):
sdl2ext.SpriteFactory(123)
with pytest.raises(ValueError):
sdl2ext.SpriteFactory(sdl2ext.TEXTURE)
dogc()
def main():
#cause I don't want to pass these around
global WINDOW, REN, SPRITE_FACTORY, SPRITE_RENDERER, MUSIC
SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO)
WINDOW = ext.Window("Tetromino", size=(WINDOWWIDTH, WINDOWHEIGHT))
REN = ext.Renderer(WINDOW)
WINDOW.show()
font_file = sysfont.get_font("freesans", sysfont.STYLE_BOLD)
font_manager = ext.FontManager(font_file, size=18)
#fontmanager=font_manager will be default_args passed to every sprite creation method
SPRITE_FACTORY = ext.SpriteFactory(renderer=REN,
fontmanager=font_manager,
free=True)
SPRITE_RENDERER = SPRITE_FACTORY.create_sprite_render_system(WINDOW)
sdlmixer.Mix_Init(sdlmixer.MIX_INIT_OGG)
sdlmixer.Mix_OpenAudio(22050, sdlmixer.MIX_DEFAULT_FORMAT, 2, 1024)
#BEEP1 = sdlmixer.Mix_LoadWAV(b"beep1.ogg")
showTextScreen("Tetromino")
while True:
if random.randint(0, 1) == 0:
MUSIC = sdlmixer.Mix_LoadMUS(b"tetrisb.mid")
else:
MUSIC = sdlmixer.Mix_LoadMUS(b"tetrisc.mid")
sdlmixer.Mix_PlayMusic(MUSIC, -1)
runGame()
sdlmixer.Mix_HaltMusic()
showTextScreen("Game Over")
def test_SpriteFactory_create_software_sprite(self):
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
for w in range(0, 100):
for h in range(0, 100):
for bpp in (1, 4, 8, 12, 15, 16, 24, 32):
sprite = factory.create_software_sprite((w, h), bpp)
self.assertIsInstance(sprite, sdl2ext.SoftwareSprite)
#self.assertRaises(ValueError, factory.create_software_sprite, (-1,-1))
#self.assertRaises(ValueError, factory.create_software_sprite, (-10,5))
#self.assertRaises(ValueError, factory.create_software_sprite, (10,-5))
self.assertRaises(TypeError, factory.create_software_sprite, size=None)
self.assertRaises(sdl2ext.SDLError,
factory.create_software_sprite,
size=(10, 10),
bpp=-1)
self.assertRaises(TypeError, factory.create_software_sprite, masks=5)
self.assertRaises((ArgumentError, TypeError),
factory.create_software_sprite,
size=(10, 10),
masks=(None, None, None, None))
self.assertRaises((ArgumentError, TypeError),
factory.create_software_sprite,
size=(10, 10),
masks=("Test", 1, 2, 3))
dogc()
def run():
# init sdl and get window up
sdl2ext.init()
window = sdl2ext.Window("Traction Edge RL", size=(800, 600))
window.show()
#create hardware accelerated context for drawing on
context = sdl2ext.RenderContext(window, index=-1, flags=SDL_RENDERER_ACCELERATED)
#create our custom renderer with the context
renderer = systems.Renderer(context)
# init world
world = sdl2ext.World()
world.add_system(renderer)
# create our sprites
factory = sdl2ext.SpriteFactory(sprite_type=sdl2ext.TEXTURE, renderer=context)
sp_player = factory.from_color(WHITE, size=(32,32))
#create player
player = entities.Creature(world, sp_player, 100, 400)
#main loop
running = True
while running:
events = sdl2ext.get_events()
for event in events:
if event.type == SDL_QUIT:
running = False
break
SDL_Delay(10)
world.process()
return
def test_fill(self):
# TODO: add exceptions and more bounding tests.
rects = ((0, 0, 3, 2),
(2, 3, 4, 2),
(5, -1, 2, 2),
(1, 7, 4, 8)
)
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
sprite = factory.create_sprite(size=(10, 10), bpp=32)
view = sdl2ext.PixelView(sprite)
for rect in rects:
sdl2ext.fill(sprite, 0)
colorval = sdl2ext.prepare_color(0xAABBCCDD, sprite)
sdl2ext.fill(sprite, 0xAABBCCDD, rect)
for y, row in enumerate(view):
for x, col in enumerate(row):
if y >= rect[1] and y < (rect[1] + rect[3]):
if x >= rect[0] and x < (rect[0] + rect[2]):
self.assertEqual(col, colorval,
"color mismatch at (x, y)")
else:
self.assertEqual(col, 0,
"color mismatch at (x, y)")
else:
self.assertEqual(col, 0, "color mismatch at (x, y)")
def test_pixels2d(self):
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
sprite = factory.create_sprite(size=(5, 10), bpp=32,
masks=(0xFF000000, 0x00FF0000,
0x0000FF00, 0x000000FF))
sdl2ext.fill(sprite, 0x01, (2, 2, 2, 2))
nparray = sdl2ext.pixels2d(sprite)
def test_prepare_color(self):
rcolors = (
Color(0, 0, 0, 0),
Color(255, 255, 255, 255),
Color(8, 55, 110, 220),
)
icolors = (
0x00000000,
0xFFFFFFFF,
0xAABBCCDD,
)
scolors = (
"#000",
"#FFF",
"#AABBCCDD",
)
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
sprite = factory.create_sprite(size=(10, 10),
bpp=32,
masks=(0xFF000000, 0x00FF0000,
0x0000FF00, 0x000000FF))
for color in rcolors:
c = sdl2ext.prepare_color(color, sprite)
self.assertEqual(c, int(color))
for color in icolors:
c = sdl2ext.prepare_color(color, sprite)
cc = COLOR(color)
self.assertEqual(c, int(cc))
for color in scolors:
c = sdl2ext.prepare_color(color, sprite)
cc = COLOR(color)
self.assertEqual(c, int(cc))
def test_SpriteFactory_create_sprite(self):
window = sdl2ext.Window("Test", size=(1, 1))
renderer = sdl2ext.Renderer(window)
tfactory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
sfactory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
for w in range(0, 100):
for h in range(0, 100):
for bpp in (1, 4, 8, 12, 15, 16, 24, 32):
sprite = sfactory.create_sprite(size=(w, h), bpp=bpp)
assert isinstance(sprite, sdl2ext.SoftwareSprite)
if w == 0 or h == 0:
with pytest.raises(sdl2ext.SDLError):
tfactory.create_sprite(size=(w, h))
continue
sprite = tfactory.create_sprite(size=(w, h))
assert isinstance(sprite, sdl2ext.TextureSprite)
dogc()
def run():
# print sdl2ext.get_image_formats()
# return
sdl2ext.init()
window = sdl2ext.Window("The Pong Game", size=(800, 600))
window.show()
world = sdl2ext.World()
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
sp_ball = factory.from_color(WHITE, size=(20, 20))
sp_paddle1 = factory.from_color(WHITE, size=(20, 100))
sp_paddle2 = factory.from_color(WHITE, size=(20, 100))
movement = MovementSystem(0, 0, 800, 600)
collision = CollisionSystem(0, 0, 800, 600, 390, 290)
aicontroller = TrackingAIController(0, 600)
spriterenderer = SoftwareRenderer(window)
world.add_system(aicontroller)
world.add_system(movement)
world.add_system(collision)
world.add_system(spriterenderer)
player1 = Player(world, sp_paddle1, 0, 250)
player2 = Player(world, sp_paddle2, 780, 250, True)
ball = Ball(world, sp_ball, 390, 290)
ball.velocity.vx = -3
collision.ball = ball
aicontroller.ball = ball
collision.player1 = player1
collision.player2 = player2
running = True
while running:
events = sdl2ext.get_events()
for event in events:
if event.type == SDL_QUIT:
running = False
break
if event.type == SDL_KEYDOWN:
if event.key.keysym.sym == SDLK_UP:
player1.velocity.vy = -3
elif event.key.keysym.sym == SDLK_DOWN:
player1.velocity.vy = 3
elif event.type == SDL_KEYUP:
if event.key.keysym.sym in (SDLK_UP, SDLK_DOWN):
player1.velocity.vy = 0
SDL_Delay(10)
world.process()
return 0
def test_SpriteFactory_from_image(self):
window = sdl2ext.Window("Test", size=(1, 1))
renderer = sdl2ext.Renderer(window)
tfactory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
sfactory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
for suffix in ("tif", "png", "jpg"):
imgname = RESOURCES.get_path("surfacetest.%s" % suffix)
tsprite = tfactory.from_image(imgname)
self.assertIsInstance(tsprite, sdl2ext.TextureSprite)
ssprite = sfactory.from_image(imgname)
self.assertIsInstance(ssprite, sdl2ext.SoftwareSprite)
for factory in (tfactory, sfactory):
self.assertRaises((ArgumentError, ValueError), factory.from_image,
None)
#self.assertRaises((IOError, SDLError),
# factory.from_image, "banana")
if not _ISPYPY:
self.assertRaises(ArgumentError, factory.from_image, 12345)
dogc()
def test_Renderer_copy(self):
surface = SDL_CreateRGBSurface(0, 128, 128, 32, 0, 0, 0, 0).contents
sdl2ext.fill(surface, 0x0)
renderer = sdl2ext.Renderer(surface)
factory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
w, h = 32, 32
sp = factory.from_color(0xFF0000, (w, h))
sp.x, sp.y = 40, 50
renderer.copy(sp, (0, 0, w, h), (sp.x, sp.y, w, h))
view = sdl2ext.PixelView(surface)
self.check_pixels(view, 128, 128, sp, 0xFF0000, (0x0, ))
del view
def test_SpriteFactory_from_surface(self):
window = sdl2ext.Window("Test", size=(1, 1))
renderer = sdl2ext.Renderer(window)
tfactory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
sfactory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
sf = SDL_CreateRGBSurface(0, 10, 10, 32, 0, 0, 0, 0)
tsprite = tfactory.from_surface(sf.contents)
self.assertIsInstance(tsprite, sdl2ext.TextureSprite)
ssprite = sfactory.from_surface(sf.contents)
self.assertIsInstance(ssprite, sdl2ext.SoftwareSprite)
SDL_FreeSurface(sf)
for factory in (tfactory, sfactory):
self.assertRaises((sdl2ext.SDLError, AttributeError, ArgumentError,
TypeError), factory.from_surface, None)
self.assertRaises((AttributeError, ArgumentError, TypeError),
factory.from_surface, "test")
# TODO: crashes pypy 2.0
#self.assertRaises((AttributeError, ArgumentError, TypeError),
# factory.from_surface, 1234)
dogc()
def test_PixelView(self):
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
sprite = factory.create_sprite(size=(10, 10), bpp=32)
view = sdl2ext.PixelView(sprite)
view[1] = (0xAABBCCDD, ) * 10
rcolor = sdl2ext.prepare_color(0xAABBCCDD, sprite)
for index, row in enumerate(view):
if index == 1:
for col in row:
assert col == rcolor
else:
for col in row:
assert col == 0x0
def test_SpriteFactory_from_text(self):
sfactory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
fm = sdl2ext.FontManager(RESOURCES.get_path("tuffy.ttf"))
# No Fontmanager passed
self.assertRaises(KeyError, sfactory.from_text, "Test")
# Passing various keywords arguments
sprite = sfactory.from_text("Test", fontmanager=fm)
self.assertIsInstance(sprite, sdl2ext.SoftwareSprite)
sprite = sfactory.from_text("Test", fontmanager=fm, alias="tuffy")
self.assertIsInstance(sprite, sdl2ext.SoftwareSprite)
# Get text from a texture sprite factory
window = sdl2ext.Window("Test", size=(1, 1))
renderer = sdl2ext.Renderer(window)
tfactory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE,
renderer=renderer,
fontmanager=fm)
sprite = tfactory.from_text("Test", alias="tuffy")
self.assertIsInstance(sprite, sdl2ext.TextureSprite)
dogc()
def test_SpriteFactory(self):
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
self.assertIsInstance(factory, sdl2ext.SpriteFactory)
self.assertEqual(factory.default_args, {})
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE, bananas="tasty")
self.assertIsInstance(factory, sdl2ext.SpriteFactory)
self.assertEqual(factory.default_args, {"bananas": "tasty"})
window = sdl2ext.Window("Test", size=(1, 1))
renderer = sdl2ext.Renderer(window)
factory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
self.assertIsInstance(factory, sdl2ext.SpriteFactory)
factory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
self.assertIsInstance(factory, sdl2ext.SpriteFactory)
self.assertEqual(factory.default_args, {"renderer": renderer})
self.assertRaises(ValueError, sdl2ext.SpriteFactory, "Test")
self.assertRaises(ValueError, sdl2ext.SpriteFactory, -456)
self.assertRaises(ValueError, sdl2ext.SpriteFactory, 123)
self.assertRaises(ValueError, sdl2ext.SpriteFactory, sdl2ext.TEXTURE)
dogc()
def test_pixels3d(self):
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
sprite = factory.create_sprite(size=(5, 10), bpp=32,
masks=(0xFF000000, 0x00FF0000,
0x0000FF00, 0x000000FF))
sdl2ext.fill(sprite, 0xAABBCCDD, (1, 2, 3, 4))
nparray = sdl2ext.pixels3d(sprite)
for x in range(1, 4):
for y in range(2, 6):
self.assertTrue(numpy.all([nparray[x, y],
[0xAA, 0xBB, 0xCC, 0xDD]]))
self.assertFalse(numpy.all([nparray[0, 0], [0xAA, 0xBB, 0xCC, 0xDD]]))
self.assertFalse(numpy.all([nparray[1, 0], [0xAA, 0xBB, 0xCC, 0xDD]]))
self.assertFalse(numpy.all([nparray[0, 1], [0xAA, 0xBB, 0xCC, 0xDD]]))
self.assertFalse(numpy.all([nparray[3, 6], [0xAA, 0xBB, 0xCC, 0xDD]]))
self.assertFalse(numpy.all([nparray[4, 6], [0xAA, 0xBB, 0xCC, 0xDD]]))
def test_SpriteFactory_create_texture_sprite(self):
window = sdl2ext.Window("Test", size=(1, 1))
renderer = sdl2ext.Renderer(window)
factory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
for w in range(1, 100):
for h in range(1, 100):
sprite = factory.create_texture_sprite(renderer, size=(w, h))
self.assertIsInstance(sprite, sdl2ext.TextureSprite)
del sprite
# Test different access flags
for flag in (SDL_TEXTUREACCESS_STATIC, SDL_TEXTUREACCESS_STREAMING,
SDL_TEXTUREACCESS_TARGET):
sprite = factory.create_texture_sprite(renderer, size=(64, 64),
access=flag)
self.assertIsInstance(sprite, sdl2ext.TextureSprite)
del sprite
dogc()
def main():
sdl2ext.init()
TTF_Init()
window = sdl2ext.Window("Text display", size=(800, 600))
window.show()
renderer = sdl2ext.RenderContext(window)
factory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
world = sdl2ext.World()
fps = FPSCounter(world, renderer=renderer)
spriteRenderer = factory.create_sprite_renderer()
fpsController = FPSController()
world.add_system(fpsController)
world.add_system(spriteRenderer)
running = True
while running:
for event in sdl2ext.get_events():
if event.type == sdlevents.SDL_QUIT:
running = False
break
elif event.type == sdlevents.SDL_USEREVENT:
entity = cast(event.user.data1,
POINTER(py_object)).contents.value
entity.textsprite.text = "FPS: " + str(entity.fps.counter)
entity.fps.counter = 0
renderer.clear()
world.process()
TTF_Quit()
sdl2ext.quit()
return 0
def run():
# Create the environment, in which our particles will exist.
world = sdl2ext.World()
# Set up the globally available information about the current mouse
# position. We use that information to determine the emitter
# location for new particles.
world.mousex = 400
world.mousey = 300
# Create the particle engine. It is just a simple System that uses
# callback functions to update a set of components.
engine = particles.ParticleEngine()
# Bind the callback functions to the particle engine. The engine
# does the following on processing:
# 1) reduce the life time of each particle by one
# 2) create a list of particles, which's life time is 0 or below.
# 3) call createfunc() with the world passed to process() and
# the list of dead particles
# 4) call updatefunc() with the world passed to process() and the
# set of particles, which still are alive.
# 5) call deletefunc() with the world passed to process() and the
# list of dead particles. deletefunc() is respsonible for
# removing the dead particles from the world.
engine.createfunc = createparticles
engine.updatefunc = updateparticles
engine.deletefunc = deleteparticles
world.add_system(engine)
# We create all particles at once before starting the processing.
# We also could create them in chunks to have a visually more
# appealing effect, but let's keep it simple.
createparticles(world, None, 300)
# Initialize the video subsystem, create a window and make it visible.
sdl2ext.init()
window = sdl2ext.Window("Particles", size=(800, 600))
window.show()
# Create a hardware-accelerated sprite factory. The sprite factory requires
# a rendering context, which enables it to create the underlying textures
# that serve as the visual parts for the sprites.
renderer = sdl2ext.RenderContext(window)
factory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
# Create a set of images to be used as particles on rendering. The
# images are used by the ParticleRenderer created below.
images = (factory.from_image(RESOURCES.get_path("circle.png")),
factory.from_image(RESOURCES.get_path("square.png")),
factory.from_image(RESOURCES.get_path("star.png")))
# Center the mouse on the window. We use the SDL2 functions directly
# here. Since the SDL2 functions do not know anything about the
# sdl2.ext.Window class, we have to pass the window's SDL_Window to it.
SDL_WarpMouseInWindow(window.window, world.mousex, world.mousey)
# Hide the mouse cursor, so it does not show up - just show the
# particles.
SDL_ShowCursor(0)
# Create the rendering system for the particles. This is somewhat
# similar to the SoftSpriteRenderer, but since we only operate with
# hundreds of particles (and not sprites with all their overhead),
# we need an own rendering system.
particlerenderer = ParticleRenderer(renderer, images)
world.add_system(particlerenderer)
# The almighty event loop. You already know several parts of it.
running = True
while running:
for event in sdl2ext.get_events():
if event.type == SDL_QUIT:
running = False
break
if event.type == SDL_MOUSEMOTION:
# Take care of the mouse motions here. Every time the
# mouse is moved, we will make that information globally
# available to our application environment by updating
# the world attributes created earlier.
world.mousex = event.motion.x
world.mousey = event.motion.y
# We updated the mouse coordinates once, ditch all the
# other ones. Since world.process() might take several
# milliseconds, new motion events can occur on the event
# queue (10ths to 100ths!), and we do not want to handle
# each of them. For this example, it is enough to handle
# one per update cycle.
SDL_FlushEvent(SDL_MOUSEMOTION)
break
world.process()
SDL_Delay(1)
sdl2ext.quit()
return 0
def test_SpriteFactory_from_object(self):
window = sdl2ext.Window("Test", size=(1, 1))
renderer = sdl2ext.Renderer(window)
tfactory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
sfactory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
def run():
# Initialize the video system - this implicitly initializes some
# necessary parts within the SDL2 DLL used by the video module.
#
# You SHOULD call this before using any video related methods or
# classes.
sdl2ext.init()
# Create a new window (like your browser window or editor window,
# etc.) and give it a meaningful title and size. We definitely need
# this, if we want to present something to the user.
window = sdl2ext.Window("Hello World!", size=(592, 460))
# By default, every Window is hidden, not shown on the screen right
# after creation. Thus we need to tell it to be shown now.
window.show()
# Create a sprite factory that allows us to create visible 2D elements
# easily. Depending on what the user chosses, we either create a factory
# that supports hardware-accelerated sprites or software-based ones.
# The hardware-accelerated SpriteFactory requres a rendering context
# (or SDL_Renderer), which will create the underlying textures for us.
if "-hardware" in sys.argv:
print("Using hardware acceleration")
renderer = sdl2ext.RenderContext(window)
factory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
else:
print("Using software rendering")
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
# Creates a simple rendering system for the Window. The
# SpriteRenderer can draw Sprite objects on the window.
spriterenderer = factory.create_sprite_renderer(window)
# Creates a new 2D pixel-based surface to be displayed, processed or
# manipulated. We will use the one of the shipped example images
# from the resource package to display.
sprite = factory.from_image(RESOURCES.get_path("hello.bmp"))
# Display the surface on the window. This will copy the contents
# (pixels) of the surface to the window. The surface will be
# displayed at surface.position on the window. Play around with the
# surface.x and surface.y values or surface.position (which is just
# surface.x and surface.y grouped as tuple)!
spriterenderer.render(sprite)
# Set up an example event loop processing system. This is a necessity,
# so the application can exit correctly, mouse movements, etc. are
# recognised and so on. The TestEventProcessor class is just for
# testing purposes and does not do anything meaningful. Take a look
# at its code to better understand how the event processing can be
# done and customized!
processor = sdl2ext.TestEventProcessor()
# Start the event processing. This will run in an endless loop, so
# everything following after processor.run() will not be executed
# before some quitting event is raised.
processor.run(window)
# We called video.init(), so we have to call video.quit() as well to
# release the resources hold by the SDL DLL.
sdl2ext.quit()
def run():
# You know those from the helloworld.py example.
# Initialize the video subsystem, create a window and make it visible.
sdl2ext.init()
window = sdl2ext.Window("UI Elements", size=(800, 600))
window.show()
# Create a sprite factory that allows us to create visible 2D elements
# easily. Depending on what the user chosses, we either create a factory
# that supports hardware-accelerated sprites or software-based ones.
# The hardware-accelerated SpriteFactory requres a rendering context
# (or SDL_Renderer), which will create the underlying textures for us.
if "-hardware" in sys.argv:
print("Using hardware acceleration")
renderer = sdl2ext.RenderContext(window)
factory = sdl2ext.SpriteFactory(sdl2ext.TEXTURE, renderer=renderer)
else:
print("Using software rendering")
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
# Create a UI factory, which will handle several defaults for
# us. Also, the UIFactory can utilises software-based UI elements as
# well as hardware-accelerated ones; this allows us to keep the UI
# creation code clean.
uifactory = sdl2ext.UIFactory(factory)
# Create a simple Button sprite, which reacts on mouse movements and
# button presses and fill it with a white color. All UI elements
# inherit directly from the TextureSprite (for TEXTURE) or SoftwareSprite
# (for SOFTWARE), so everything you can do with those classes is also
# possible for the UI elements.
button = uifactory.from_image(sdl2ext.BUTTON,
RESOURCES.get_path("button.bmp"))
button.position = 50, 50
# Create a TextEntry sprite, which reacts on keyboard presses and
# text input.
entry = uifactory.from_image(sdl2ext.TEXTENTRY,
RESOURCES.get_path("textentry.bmp"))
entry.position = 50, 200
# Create a CheckButton sprite. The CheckButton is a specialised
# Button, which can switch its state, identified by the 'checked'
# attribute by clicking.
checkbutton = uifactory.from_color(sdl2ext.CHECKBUTTON, RED, size=(50, 50))
checkbutton.position = 200, 50
# Bind some actions to the button's event handlers. Whenever a click
# (combination of a mouse button press and mouse button release), the
# onclick() function will be called.
# Whenever the mouse moves around in the area occupied by the button, the
# onmotion() function will be called.
# The event handlers receive the issuer of the event as first argument
# (the button is the issuer of that event) and the SDL event data as second
# argument for further processing, if necessary.
button.click += onclick
button.motion += onmotion
# Bind some actions to the entry's event handlers. The TextEntry
# receives input events, once it has been activated by a mouse
# button press on its designated area. The UIProcessor class takes
# care of this internally through its activate() method. If the
# TextEntry is activated, SDL_TEXTINPUT events are enabled by the
# relevant SDL2 functions, causing input events to occur, that are
# handled by the TextEntry.
entry.input += oninput
entry.editing += onedit
checkbutton.click += oncheck
checkbutton.factory = factory
# Since all gui elements are sprites, we can use the
# SpriteRenderer class, we learned about in helloworld.py, to
# draw them on the Window.
spriterenderer = factory.create_sprite_renderer(window)
# Create a new UIProcessor, which will handle the user input events
# and pass them on to the relevant user interface elements.
uiprocessor = sdl2ext.UIProcessor()
running = True
while running:
events = sdl2ext.get_events()
for event in events:
if event.type == SDL_QUIT:
running = False
break
# Pass the SDL2 events to the UIProcessor, which takes care of
# the user interface logic.
uiprocessor.dispatch([button, checkbutton, entry], event)
# Render all user interface elements on the window.
spriterenderer.render((button, entry, checkbutton))
sdl2ext.quit()
return 0
import sys
import os
try:
import sdl2.ext as sdl2ext
except ImportError:
import traceback
traceback.print_exc()
sys.exit(1)
from sdl2.ext import Resources
RESOURCES = Resources(os.path.dirname(os.path.abspath(__file__)), "resources")
sdl2ext.init()
window = sdl2ext.Window("Hello World!", size=(640, 480))
window.show()
factory = sdl2ext.SpriteFactory(sdl2ext.SOFTWARE)
sprite = factory.from_image(RESOURCES.get_path("Hello.png"))
sprite_renderer = factory.create_sprite_renderer(window)
sprite_renderer.render(sprite)
processor = sdl2ext.TestEventProcessor()
processor.run(window)
sdl2ext.quit()
