def dump_to_file(self, tiled_map, file_path):
""" 将tiled_map保存在给定的文件中 """
tiled_map_stream = StringIO()
self.dump_to_stream(tiled_map, tiled_map_stream)
tiled_map_stream.seek(0)
compressed_bin = zlib.compress(tiled_map_stream.read())
with open(file_path, 'wb') as f:
f.write(compressed_bin)
def get_png(self, fobj):
output = StringIO()
if isinstance(fobj, basestring):
path = fobj
if not path.startswith('/'):
path = os.path.join(settings.MEDIA_ROOT, path)
fobj = open(fobj)
img = Image.open(fobj)
img.save(output, format="PNG")
output.seek(0)
return output
def read_from_file(self, file_path):
""" 读取并解析map文件 """
with open(file_path, 'rb') as f:
compressed_bin = f.read()
raw_binary = zlib.decompress(compressed_bin)
tiled_map_stream = StringIO(raw_binary)
tiled_map = TiledMap()
# 读取Header部分
header_stream = StringIO(tiled_map_stream.read(104))
header_fields = self.parse_fields(
header_stream, self.header_fields_desc)
tiled_map.update_fields(**header_fields)
# 读取tiles部分
tiles = []
tile_length = tiled_map.tile_row * tiled_map.tile_col
tile_stream = StringIO(tiled_map_stream.read(tile_length))
for i in xrange(0, tiled_map.tile_row * tiled_map.tile_col):
tile_byte = struct.unpack('b', tile_stream.read(1))[0]
tile = MapTile.from_byte(tile_byte)
tiles.append(tile)
tiled_map.tiles = tiles
# 读取elements部分
for i in xrange(0, tiled_map.element_num):
element = MapElement()
element_header_stream = StringIO(tiled_map_stream.read(20))
element_fields = self.parse_fields(
element_header_stream,
self.element_header_fields_desc)
element.update_fields(**element_fields)
if element.data_length > 0:
element.data = tiled_map_stream.read(element.data_length)
else:
element.data = ''
tiled_map.elements.append(element)
# 读取jump elements部分
for i in xrange(0, tiled_map.jump_point_num):
jump_point = MapJumpPoint()
jump_point_header_stream = StringIO(tiled_map_stream.read(48))
jump_point_fields = self.parse_fields(
jump_point_header_stream,
self.jump_point_header_fields_desc)
jump_point.update_fields(**jump_point_fields)
if jump_point.data_length > 0:
jump_point.data = tiled_map_stream.read(jump_point.data_length)
tiled_map.jump_points.append(jump_point)
return tiled_map
