def test_missing_package(clean_assets):
a = Asset('does/not/exist')
engine = GameEngine(
AssetTestScene, basic_systems=[AssetLoadingSystem, Failer],
fail=lambda e: False, message=None, run_time=1,
)
with engine:
engine.start()
with pytest.raises(FileNotFoundError):
assert a.load()
def test_missing_resource(clean_assets):
a = Asset('ppb/dont.touch.this')
engine = GameEngine(
AssetTestScene, basic_systems=[AssetLoadingSystem, Failer],
fail=lambda e: False, message=None, run_time=1,
)
with engine:
engine.start()
with pytest.raises(FileNotFoundError):
assert a.load()
def test_loading(clean_assets):
a = Asset('ppb/engine.py')
engine = GameEngine(
AssetTestScene, basic_systems=[AssetLoadingSystem, Failer],
fail=lambda e: False, message=None, run_time=1,
)
with engine:
engine.start()
ats = engine.current_scene
engine.main_loop()
assert a.load()
print(vars(ats))
assert ats.ale.asset is a
assert ats.ale.total_loaded == 1
assert ats.ale.total_queued == 0
class Font(ChainingMixin, FreeingMixin, AbstractAsset):
"""
A TrueType/OpenType Font
"""
def __init__(self, name, *, size, index=None):
"""
:param name: the filename to load
:param size: the size in points
:param index: the index of the font in a multi-font file (rare)
"""
# We do it this way so that the raw data can be cached between multiple
# invocations, even though we have to reparse it every time.
self._data = Asset(name)
self.size = size
self.index = index
self._start(self._data)
def _background(self):
self._file = rw_from_object(io.BytesIO(self._data.load()))
# We have to keep the file around because freetype doesn't load
# everything at once, resulting in segfaults.
with _freetype_lock:
# Doing this so that we "refcount" the FT_Library internal to SDL_ttf
# (TTF_CloseFont is often called after system cleanup)
ttf_call(TTF_Init, _check_error=lambda rv: rv == -1)
if self.index is None:
return ttf_call(
TTF_OpenFontRW, self._file, False, self.size,
_check_error=lambda rv: not rv
)
else:
return ttf_call(
TTF_OpenFontIndexRW, self._file, False, self.size, self.index,
_check_error=lambda rv: not rv
)
def free(self, data, _TTF_CloseFont=TTF_CloseFont, _lock=_freetype_lock,
_TTF_Quit=TTF_Quit):
# ^^^ is a way to keep required functions during interpreter cleanup
with _lock:
_TTF_CloseFont(data) # Can't fail
_TTF_Quit()
def __repr__(self):
return f"<{type(self).__name__} name={self.name!r} size={self.size!r}{' loaded' if self.is_loaded() else ''} at {id(self):x}>"
@property
def name(self):
return self._data.name
def resize(self, size):
"""
Returns a new copy of this font in a different size
"""
return type(self)(self._data.name, size=size, index=self._index)
@property
def _is_fixed_width(self):
return bool(TTF_FontFaceIsFixedWidth(self.load()))
@property
def _family_name(self):
return TTF_FontFaceFamilyName(self.load())
@property
def _style_name(self):
return TTF_FontFaceStyleName(self.load())