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comparison engine/extensions/serializers/xmlobject.py @ 0:4a0efb7baf70

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* Datasets becomes the new trunk and retires after that :-)
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 29 Jun 2008 18:44:17 +0000
parents
children 9a1529f9625e
comparison
equal deleted inserted replaced
-1:000000000000 0:4a0efb7baf70
1 import fife
2 from serializers import *
3 from fife_utils import *
4 from serializers import *
5
6 class ObjectLocation(fife.ResourceLocation):
7 def __init__(self, file, node=None):
8 fife.ResourceLocation.__init__(self, file)
9 self.node = node
10
11 class XMLObjectLoader(fife.ResourceLoader):
12 def __init__(self, image_pool, anim_pool, model, vfs=None):
13 self.image_pool = image_pool
14 self.anim_pool = anim_pool
15 self.model = model
16 self.vfs = vfs
17 self.source = None
18 self.filename = ''
19
20 def loadResource(self, location):
21 self.source = location
22 self.filename = self.source.getFilename()
23 self.node = None
24 self.file = None
25 if hasattr(location, 'node'):
26 self.node = location.node
27 else:
28 isobjectfile = True
29 f = self.vfs.open(self.filename)
30 f.thisown = 1
31
32 obj_identifier = '<?fife type="object"?>'
33 try:
34 s = f.readString(len(obj_identifier))
35 except fife.IndexOverflow:
36 isobjectfile = False
37
38 if isobjectfile and s != obj_identifier:
39 isobjectfile = False
40
41 if not isobjectfile:
42 raise WrongFileType('Tried to open non-object file %s with XMLObjectLoader.' % self.filename)
43 self.do_load_resource(f)
44
45 def do_load_resource(self, file):
46 if file:
47 tree = ET.parse(file)
48 self.node = tree.getroot()
49 self.parse_object(self.node)
50
51 def parse_object(self, object):
52 if self.node.tag != 'object':
53 raise InvalidFormat('Expected <object> tag, but found <%s>.' % self.node.tag)
54
55 id = object.get('id')
56 if not id:
57 raise InvalidFormat('<object> declared without an id attribute.')
58
59 nspace = object.get('namespace')
60 if not nspace:
61 raise InvalidFormat('<object> %s declared without a namespace attribute.' % str(id))
62
63 obj = None
64 parent = object.get('parent', None)
65 if parent:
66 query = self.metamodel.getObjects('id', str(parent))
67 if len(query) == 0:
68 raise NotFound('No objects found with identifier %s.' % str(parent))
69 elif len(query) > 1:
70 raise NameClash('%d objects found with identifier %s.' % (len(query), str(parent)))
71 parent = query[0]
72
73 try:
74 obj = self.model.createObject(str(id), str(nspace), parent)
75 except RuntimeError, e:
76 if is_fife_exc(fife.NameClash, e):
77 raise NameClash('Tried to create already existing object, ignoring')
78 raise
79
80 obj.setResourceLocation(self.source)
81 fife.ObjectVisual.create(obj)
82 obj.setBlocking(bool( object.get('blocking', False) ))
83 obj.setStatic(bool( object.get('static', False) ))
84
85 pather = object.get('pather', 'RoutePather')
86 obj.setPather( self.model.getPather(pather) )
87
88 self.parse_images(object, obj)
89 self.parse_actions(object, obj)
90
91 def parse_images(self, objelt, object):
92 for image in objelt.findall('image'):
93 source = image.get('source')
94 if not source:
95 raise InvalidFormat('<image> declared without a source attribute.')
96
97 # paths are relative to this resource's path
98 path = self.filename.split('/')
99 path.pop()
100 path.append(str(source))
101
102 id = self.image_pool.addResourceFromFile('/'.join(path))
103 object.get2dGfxVisual().addStaticImage(int( image.get('direction', 0) ), id)
104 img = self.image_pool.getImage(id)
105 img.setXShift(int( image.get('x_offset', 0) ))
106 img.setYShift(int( image.get('y_offset', 0) ))
107
108 def parse_actions(self, objelt, object):
109 for action in objelt.findall('action'):
110 id = action.get('id')
111 if not id:
112 raise InvalidFormat('<action> declared without an id attribute.')
113
114 act_obj = object.createAction(str(id))
115 fife.ActionVisual.create(act_obj)
116 self.parse_animations(action, act_obj)
117
118 def parse_animations(self, actelt, action):
119 for anim in actelt.findall('animation'):
120 source = anim.get('source')
121 if not source:
122 raise InvalidFormat('Animation declared with no source location.')
123
124 # animation paths are relative to this resource's path
125 path = self.filename.split('/')
126 path.pop()
127 path.append(str(source))
128
129 anim_id = self.anim_pool.addResourceFromFile('/'.join(path))
130 animation = self.anim_pool.getAnimation(anim_id)
131 action.get2dGfxVisual().addAnimation(int( anim.get('direction', 0) ), anim_id)
132 action.setDuration(animation.getDuration())
133