from __future__ import division
+import math
+
from xml.etree.ElementTree import ElementTree
try:
class ParamList(object):
"""List of parameter definitions."""
- def __init__(self, element):
- self.params = []
- if element:
- for subelem in element:
- if realtag(subelem) == "param":
- self.params.append(NumberDef(subelem.text))
+
+ def __init__(self, params=[]):
+ self.params = list(params)
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ return cls([NumberDef(subelem.text) for subelem in element
+ if realtag(subelem) == "param"])
def __call__(self, params, rank):
return [param(params, rank) for param in self.params]
class Direction(object):
"""Raw direction value."""
- def __init__(self, doc, element, type="absolute"):
- self.type = element.get("type", type)
- self.value = NumberDef(element.text)
+ VALID_TYPES = ["relative", "absolute", "aim", "sequence"]
+
+ def __init__(self, type, value):
+ if type not in self.VALID_TYPES:
+ raise ValueError("invalid type %r" % type)
+ self.type = type
+ self.value = value
+
+ @classmethod
+ def FromElement(cls, doc, element, default="absolute"):
+ """Construct using an ElementTree-style element."""
+ return cls(element.get("type", default), NumberDef(element.text))
def __call__(self, params, rank):
- return (self.value(params, rank), self.type)
+ return (math.radians(self.value(params, rank)), self.type)
def __repr__(self):
return "%s(%r, type=%r)" % (
class ChangeDirection(object):
"""Direction change over time."""
- def __init__(self, doc, element):
+ def __init__(self, term, direction):
+ self.term = term
+ self.direction = direction
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
for subelem in element.getchildren():
tag = realtag(subelem)
if tag == "direction":
- self.direction = Direction(doc, subelem)
+ direction = Direction.FromElement(doc, subelem)
elif tag == "term":
- self.term = INumberDef(subelem.text)
+ term = INumberDef(subelem.text)
try:
- self.term, self.direction
- except AttributeError:
- raise ParseError
+ return cls(term, direction)
+ except UnboundLocalError as exc:
+ raise ParseError(str(exc))
def __call__(self, params, rank):
return self.term(params, rank), self.direction(params, rank)
class Speed(object):
"""Raw speed value."""
- def __init__(self, doc, element, type="absolute"):
- self.type = element.get("type", type)
- self.value = NumberDef(element.text)
+ VALID_TYPES = ["relative", "absolute", "sequence"]
+
+ def __init__(self, type, value):
+ if type not in self.VALID_TYPES:
+ raise ValueError("invalid type %r" % type)
+ self.type = type
+ self.value = value
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ return cls(element.get("type", "absolute"), NumberDef(element.text))
def __call__(self, params, rank):
return (self.value(params, rank), self.type)
class ChangeSpeed(object):
"""Speed change over time."""
- def __init__(self, doc, element):
+ def __init__(self, term, speed):
+ self.term = term
+ self.speed = speed
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
for subelem in element.getchildren():
tag = realtag(subelem)
if tag == "speed":
- self.speed = Speed(doc, subelem)
+ speed = Speed.FromElement(doc, subelem)
elif tag == "term":
- self.term = INumberDef(subelem.text)
+ term = INumberDef(subelem.text)
try:
- self.term, self.speed
- except AttributeError:
- raise ParseError
+ return cls(term, speed)
+ except UnboundLocalError as exc:
+ raise ParseError(str(exc))
def __call__(self, params, rank):
return self.term(params, rank), self.speed(params, rank)
class Wait(object):
"""Wait for some frames."""
- def __init__(self, doc, element):
- self.frames = INumberDef(element.text)
+
+ def __init__(self, frames):
+ self.frames = frames
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ return cls(INumberDef(element.text))
def __call__(self, params, rank):
return self.frames(params, rank)
class Vanish(object):
"""Make the owner disappear."""
- def __init__(self, doc, element):
+
+ def __init__(self):
pass
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ return cls()
+
def __repr__(self):
return "%s()" % (type(self).__name__)
class Repeat(object):
"""Repeat an action definition."""
- def __init__(self, doc, element):
+ def __init__(self, times, action):
+ self.times = times
+ self.action = action
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
for subelem in element.getchildren():
tag = realtag(subelem)
if tag == "times":
- self.times = INumberDef(subelem.text)
+ times = INumberDef(subelem.text)
elif tag == "action":
- self.action = ActionDef(doc, subelem)
+ action = ActionDef.FromElement(doc, subelem)
elif tag == "actionRef":
- self.action = ActionRef(doc, subelem)
-
+ action = ActionRef.FromElement(doc, subelem)
try:
- self.times, self.action
- except AttributeError:
- raise ParseError
+ return cls(times, action)
+ except UnboundLocalError as exc:
+ raise ParseError(str(exc))
def __call__(self, params, rank):
return self.times(params, rank), self.action(params, rank)
horizontal = None
vertical = None
- def __init__(self, doc, element):
+ def __init__(self, term, horizontal=None, vertical=None):
+ self.term = term
+ self.horizontal = horizontal
+ self.vertical = vertical
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ horizontal = None
+ vertical = None
+
for subelem in element.getchildren():
tag = realtag(subelem)
if tag == "term":
- self.term = INumberDef(subelem.text)
+ term = INumberDef(subelem.text)
elif tag == "horizontal":
- self.horizontal = Speed(doc, subelem)
+ horizontal = Speed.FromElement(doc, subelem)
elif tag == "vertical":
- self.vertical = Speed(doc, subelem)
+ vertical = Speed.FromElement(doc, subelem)
try:
- self.term
+ return cls(term, horizontal, vertical)
except AttributeError:
raise ParseError
direction = None
speed = None
- def __init__(self, doc, element):
- self.actions = []
- doc.bullets[element.get("label")] = self
+ def __init__(self, actions=[], direction=None, speed=None):
+ self.direction = direction
+ self.speed = speed
+ self.actions = list(actions)
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ actions = []
+ speed = None
+ direction = None
for subelem in element.getchildren():
tag = realtag(subelem)
if tag == "direction":
- self.direction = Direction(doc, subelem)
+ direction = Direction.FromElement(doc, subelem)
elif tag == "speed":
- self.speed = Speed(doc, subelem)
+ speed = Speed.FromElement(doc, subelem)
elif tag == "action":
- self.actions.append(ActionDef(doc, subelem))
+ actions.append(ActionDef.FromElement(doc, subelem))
elif tag == "actionRef":
- self.actions.append(ActionRef(doc, subelem))
+ actions.append(ActionRef.FromElement(doc, subelem))
+ dfn = cls(actions, direction, speed)
+ doc.bullets[element.get("label")] = dfn
+ return dfn
def __call__(self, params, rank):
actions = [action(params, rank) for action in self.actions]
class BulletRef(object):
"""Create a bullet by name with parameters."""
- def __init__(self, doc, element):
- self.bullet = element.get("label")
- self.params = ParamList(element)
- doc._bullet_refs.append(self)
+ def __init__(self, bullet, params=None):
+ self.bullet = bullet
+ self.params = params or ParamList()
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ bullet = cls(element.get("label"), ParamList.FromElement(doc, element))
+ doc._bullet_refs.append(bullet)
+ return bullet
def __call__(self, params, rank):
return self.bullet(self.params(params, rank), rank)
class ActionDef(object):
"""Action definition."""
- def __init__(self, doc, element):
- doc.actions[element.get("label")] = self
- self.actions = []
+ # This is self-referential, so it's filled in later.
+ CONSTRUCTORS = dict()
+
+ def __init__(self, actions):
+ self.actions = list(actions)
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ actions = []
for subelem in element.getchildren():
tag = realtag(subelem)
try:
- ctr = dict(
- repeat=Repeat,
- fire=FireDef,
- fireRef=FireRef,
- changeSpeed=ChangeSpeed,
- changeDirection=ChangeDirection,
- accel=Accel,
- wait=Wait,
- vanish=Vanish,
- action=ActionDef,
- actionRef=ActionRef)[tag]
+ ctr = cls.CONSTRUCTORS[tag]
except KeyError:
continue
else:
- self.actions.append(ctr(doc, subelem))
+ actions.append(ctr.FromElement(doc, subelem))
+ dfn = cls(actions)
+ doc.actions[element.get("label")] = dfn
+ return dfn
def __call__(self, params, rank):
return self.actions, params
class ActionRef(object):
"""Run an action by name with parameters."""
- def __init__(self, doc, element):
- self.action = element.get("label")
- self.params = ParamList(element)
- doc._action_refs.append(self)
+ def __init__(self, action, params=None):
+ self.action = action
+ self.params = params or ParamList()
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ action = cls(element.get("label"), ParamList.FromElement(doc, element))
+ doc._action_refs.append(action)
+ return action
def __call__(self, params, rank):
return self.action(self.params(params, rank), rank)
class FireDef(object):
"""Fire definition (creates a bullet)."""
- direction = None
- speed = None
+ def __init__(self, bullet, direction=None, speed=None):
+ self.bullet = bullet
+ self.direction = direction
+ self.speed = speed
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ direction = None
+ speed = None
- def __init__(self, doc, element):
- doc.fires[element.get("label")] = self
for subelem in element.getchildren():
tag = realtag(subelem)
if tag == "direction":
- self.direction = Direction(doc, subelem, "aim")
+ direction = Direction.FromElement(doc, subelem, "aim")
elif tag == "speed":
- self.speed = Speed(doc, subelem)
+ speed = Speed.FromElement(doc, subelem)
elif tag == "bullet":
- self.bullet = BulletDef(doc, subelem)
+ bullet = BulletDef.FromElement(doc, subelem)
elif tag == "bulletRef":
- self.bullet = BulletRef(doc, subelem)
+ bullet = BulletRef.FromElement(doc, subelem)
+
try:
- self.bullet
- except AttributeError:
- raise ParseError
+ fire = cls(bullet, direction, speed)
+ except UnboundLocalError as exc:
+ raise ParseError(str(exc))
+ else:
+ doc.fires[element.get("label")] = fire
+ return fire
def __call__(self, params, rank):
direction, speed, actions = self.bullet(params, rank)
class FireRef(object):
"""Fire a bullet by name with parameters."""
- def __init__(self, doc, element):
- self.fire = element.get("label")
- self.params = ParamList(element)
- doc._fire_refs.append(self)
+ def __init__(self, fire, params=None):
+ self.fire = fire
+ self.params = params or ParamList()
+
+ @classmethod
+ def FromElement(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ fired = cls(element.get("label"), ParamList.FromElement(doc, element))
+ doc._fire_refs.append(fired)
+ return fired
def __call__(self, params, rank):
"""Generate a Bullet from the FireDef and params."""
for element in root.getchildren():
tag = realtag(element)
if tag in self.CONSTRUCTORS:
- self.CONSTRUCTORS[tag](self, element)
+ self.CONSTRUCTORS[tag].FromElement(self, element)
try:
for ref in self._bullet_refs:
del(self._action_refs)
del(self._fire_refs)
+ self.bullets.pop(None, None)
+ self.actions.pop(None, None)
+ self.fires.pop(None, None)
+
@property
def top(self):
"""Get a list of all top-level actions."""
return "%s(type=%r, bullets=%r, actions=%r, fires=%r)" % (
type(self).__name__, self.type, self.bullets, self.actions,
self.fires)
+
+ActionDef.CONSTRUCTORS = dict(
+ repeat=Repeat,
+ fire=FireDef,
+ fireRef=FireRef,
+ changeSpeed=ChangeSpeed,
+ changeDirection=ChangeDirection,
+ accel=Accel,
+ wait=Wait,
+ vanish=Vanish,
+ action=ActionDef,
+ actionRef=ActionRef)
projects / python-bulletml.git / blobdiff