将来的にさまざまなイベントキャッチできるであろう。

成果物

GitHub PySDL2.World.201711031440

開発環境

Linux Mint 17.3 MATE 32bit
SDL2 2.0.2
pyenv 1.0.10
- Python 3.6.1
  - PySDL2 0.9.6

最小ソースコード

import sys
import sdl2
import sdl2.ext

WHITE = sdl2.ext.Color(255, 255, 255)

class SoftwareRenderer(sdl2.ext.SoftwareSpriteRenderSystem):
    def __init__(self, window):
        super(SoftwareRenderer, self).__init__(window)
    def render(self, components):
        sdl2.ext.fill(self.surface, sdl2.ext.Color(0, 0, 0))
        super(SoftwareRenderer, self).render(components)

class Player(sdl2.ext.Entity):
    def __init__(self, world, sprite, posx=0, posy=0):
        self.sprite = sprite
        self.sprite.position = posx, posy

def run():
    sdl2.ext.init()
    window = sdl2.ext.Window("こんにちは sdl2.ext.World() !!", size=(800, 600))
    window.show()

    world = sdl2.ext.World()

    spriterenderer = SoftwareRenderer(window)
    world.add_system(spriterenderer)

    factory = sdl2.ext.SpriteFactory(sdl2.ext.SOFTWARE)
    sp_paddle1 = factory.from_color(WHITE, size=(20, 100))
    sp_paddle2 = factory.from_color(WHITE, size=(20, 100))

    player1 = Player(world, sp_paddle1, 0, 250)
    player2 = Player(world, sp_paddle2, 780, 250)

    running = True
    while running:
        events = sdl2.ext.get_events()
        for event in events:
            if event.type == sdl2.SDL_QUIT:
                running = False
                break
        world.process()

if __name__ == "__main__":
    sys.exit(run())