def render(self, sprites, x=None, y=None):
"""Overrides the render method of sdl2.ext.TextureSpriteRenderSystem to
use "SDL_RenderCopyEx" instead of "SDL_RenderCopy" to allow sprite
rotation:
http://wiki.libsdl.org/SDL_RenderCopyEx
"""
r = SDL_Rect(0, 0, 0, 0)
if isiterable(sprites):
rcopy = SDL_RenderCopyEx
renderer = self.sdlrenderer
x = x or 0
y = y or 0
for sp in sprites:
r.x = x + sp.x
r.y = y + sp.y
r.w, r.h = sp.size
if rcopy(renderer, sp.texture, None, r, sp.angle, None,
SDL_FLIP_NONE) == -1:
raise SDLError()
else:
r.x = sprites.x
r.y = sprites.y
r.w, r.h = sprites.size
if x is not None and y is not None:
r.x = x
r.y = y
SDL_RenderCopyEx(self.sdlrenderer, sprites.texture, None, r,
sprites.angle, None, SDL_FLIP_NONE)
SDL_RenderPresent(self.sdlrenderer)
def drawAnimation(self, x, y):
if self._visible:
dest_rect = SDL_Rect()
src_rect = None
dest_rect.x = int(x + self._offsets[self._current_animation].x)
dest_rect.y = int(y + self._offsets[self._current_animation].y)
dest_rect.w = int(self._src_rect.w * game_globals.SPRITE_SCALE)
dest_rect.h = int(self._src_rect.h * game_globals.SPRITE_SCALE)
src_rect = self._animations[self._current_animation][
self._frame_index]
self._graphics.blitSurface(self._sprite_sheet, src_rect, dest_rect)
def process(self, world, components):
# Processing code that will render all existing CParticle
# components that currently exist in the world. We have a 1:1
# mapping between the created particle entities and associated
# particle components; that said, we render all created
# particles here.
# We deal with quite a set of items, so we create some shortcuts
# to save Python the time to look things up.
#
# The SDL_Rect is used for the blit operation below and is used
# as destination position for rendering the particle.
r = SDL_Rect()
# The SDL2 blit function to use. This will take an image
# (SDL_Texture) as source and copies it on the target.
dorender = SDL_RenderCopy
# And some more shortcuts.
sdlrenderer = self.renderer.renderer
images = self.images
# Before rendering all particles, make sure the old ones are
# removed from the window by filling it with a black color.
self.renderer.clear(0x0)
# Render all particles.
for particle in components:
# Set the correct destination position for the particle
r.x = int(particle.x)
r.y = int(particle.y)
# Select the correct image for the particle.
img = images[particle.type]
r.w, r.h = img.size
# Render (or blit) the particle by using the designated image.
dorender(sdlrenderer, img.texture, None, r)
self.renderer.present()