This is based on the format described at
http://www.asahi-net.or.jp/~cs8k-cyu/bulletml/bulletml_ref_e.html.
-Unless you are adding support for new tags, the only class you should
-care about in here is BulletML.
+Unless you are adding support for new actions, the only class you
+should care about in here is BulletML.
"""
from __future__ import division
-import math
+from math import sin, cos, radians, pi as PI
from xml.etree.ElementTree import ElementTree
__all__ = ["ParseError", "BulletML"]
+PI_2 = PI * 2
+
class ParseError(Error):
"""Raised when an error occurs parsing the XML structure."""
pass
return cls(element.get("type", default), NumberDef(element.text))
def __call__(self, params, rank):
- return (math.radians(self.value(params, rank)), self.type)
+ return (radians(self.value(params, rank)), self.type)
def __repr__(self):
return "%s(%r, type=%r)" % (
except UnboundLocalError as exc:
raise ParseError(str(exc))
- def __call__(self, params, rank):
- return self.term(params, rank), self.direction(params, rank)
+ def __call__(self, owner, action, params, rank, created):
+ frames = self.term(params, rank)
+ direction, type = self.direction(params, rank)
+ action.direction_frames = frames
+ action.aiming = False
+ if type == "sequence":
+ action.direction = direction
+ else:
+ if type == "absolute":
+ direction -= owner.direction
+ elif type != "relative": # aim or default
+ action.aiming = True
+ direction += owner.aim - owner.direction
+
+ # Normalize to [-pi, pi).
+ direction = (direction + PI) % PI_2 - PI
+ if frames <= 0:
+ owner.direction += direction
+ else:
+ action.direction = direction / frames
def __repr__(self):
return "%s(term=%r, direction=%r)" % (
except UnboundLocalError as exc:
raise ParseError(str(exc))
- def __call__(self, params, rank):
- return self.term(params, rank), self.speed(params, rank)
+ def __call__(self, owner, action, params, rank, created):
+ frames = self.term(params, rank)
+ speed, type = self.speed(params, rank)
+ action.speed_frames = frames
+ if frames <= 0:
+ if type == "absolute":
+ owner.speed = speed
+ elif type == "relative":
+ owner.speed += speed
+ elif type == "sequence":
+ action.speed = speed
+ elif type == "relative":
+ action.speed = speed / frames
+ else:
+ action.speed = (speed - owner.speed) / frames
def __repr__(self):
return "%s(term=%r, speed=%r)" % (
"""Construct using an ElementTree-style element."""
return cls(INumberDef(element.text))
- def __call__(self, params, rank):
- return self.frames(params, rank)
+ def __call__(self, owner, action, params, rank, created):
+ action.wait_frames = self.frames(params, rank)
+ return True
def __repr__(self):
return "%s(%r)" % (type(self).__name__, self.frames)
"""Construct using an ElementTree-style element."""
return cls(element.text)
+ def __call__(self, owner, action, params, rank, created):
+ owner.tags.add(self.tag)
+
class Untag(object):
"""Unset a bullet tag."""
"""Construct using an ElementTree-style element."""
return cls(element.text)
+ def __call__(self, owner, action, params, rank, created):
+ try:
+ owner.tags.remove(self.tag)
+ except KeyError:
+ pass
+
+class Appearance(object):
+ """Set a bullet appearance."""
+
+ def __init__(self, appearance):
+ self.appearance = appearance
+
+ def __getstate__(self):
+ return dict(appearance=self.appearance)
+
+ def __setstate__(self, state):
+ self.__init__(state["appearance"])
+
+ @classmethod
+ def FromXML(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ return cls(element.text)
+
+ def __call__(self, owner, action, params, rank, created):
+ owner.apearance = self.appearance
+
class Vanish(object):
"""Make the owner disappear."""
def __repr__(self):
return "%s()" % (type(self).__name__)
+ def __call__(self, owner, action, params, rank, created):
+ owner.vanish()
+ return True
+
class Repeat(object):
"""Repeat an action definition."""
except UnboundLocalError as exc:
raise ParseError(str(exc))
- def __call__(self, params, rank):
- return self.times(params, rank), self.action(params, rank)
+ def __call__(self, owner, action, params, rank, created):
+ repeat = self.times(params, rank)
+ actions, params = self.action(params, rank)
+ child = action.Child(actions, params, rank, repeat)
+ owner.replace(action, child)
+ child.step(owner, created)
+ return True
def __repr__(self):
return "%s(%r, %r)" % (type(self).__name__, self.times, self.action)
+class If(object):
+ """Conditional actions."""
+
+ def __init__(self, cond, then, else_=None):
+ self.cond = cond
+ self.then = then
+ self.else_ = else_
+
+ def __getstate__(self):
+ if self.else_:
+ return [('cond', self.cond.expr),
+ ('then', self.then),
+ ('else', self.else_)]
+ else:
+ return [('cond', self.cond.expr), ('then', self.then)]
+
+ def __setstate__(self, state):
+ state = dict(state)
+ state["else_"] = state.pop("else", None)
+ state["cond"] = INumberDef(state["cond"])
+ self.__init__(**state)
+
+ @classmethod
+ def FromXML(cls, doc, element):
+ """Construct using an ElementTree-style element."""
+ else_ = None
+ for subelem in element.getchildren():
+ tag = realtag(subelem)
+ if tag == "cond":
+ cond = INumberDef(subelem.text)
+ elif tag == "then":
+ then = ActionDef.FromXML(doc, subelem)
+ elif tag == "else":
+ else_ = ActionDef.FromXML(doc, subelem)
+ try:
+ return cls(cond, then, else_)
+ except UnboundLocalError as exc:
+ raise ParseError(str(exc))
+
+ def __call__(self, owner, action, params, rank, created):
+ if self.cond(params, rank):
+ branch = self.then
+ else:
+ branch = self.else_
+
+ if branch:
+ actions, params = branch(params, rank)
+ child = action.Child(actions, params, rank)
+ owner.replace(action, child)
+ child.step(owner, created)
+ return True
+
class Accel(object):
"""Accelerate over some time."""
except AttributeError:
raise ParseError
- def __call__(self, params, rank):
+ def __call__(self, owner, action, params, rank, created):
frames = self.term(params, rank)
horizontal = self.horizontal and self.horizontal(params, rank)
vertical = self.vertical and self.vertical(params, rank)
- return frames, horizontal, vertical
+ action.accel_frames = frames
+ if horizontal:
+ mx, type = horizontal
+ if frames <= 0:
+ if type == "absolute":
+ owner.mx = mx
+ elif type == "relative":
+ owner.mx += mx
+ elif type == "sequence":
+ action.mx = mx
+ elif type == "absolute":
+ action.mx = (mx - owner.mx) / frames
+ elif type == "relative":
+ action.mx = mx / frames
+ if vertical:
+ my, type = vertical
+ if frames <= 0:
+ if type == "absolute":
+ owner.my = my
+ elif type == "relative":
+ owner.my += my
+ elif type == "sequence":
+ action.my = my
+ elif type == "absolute":
+ action.my = (my - owner.my) / frames
+ elif type == "relative":
+ action.my = my / frames
def __repr__(self):
return "%s(%r, horizontal=%r, vertical=%r)" % (
class BulletDef(object):
"""Bullet definition."""
- def __init__(self, actions=(), direction=None, speed=None, tags=()):
+ def __init__(self, actions=(), direction=None, speed=None, tags=(),
+ appearance=None):
self.direction = direction
self.speed = speed
self.actions = list(actions)
self.tags = set(tags)
+ self.appearance = appearance
def __getstate__(self):
state = []
state.append(("actions", self.actions))
if self.tags:
state.append(("tags", list(self.tags)))
+ if self.appearance:
+ state.append(("appearance", self.appearance))
return state
def __setstate__(self, state):
self.direction and self.direction(params, rank),
self.speed and self.speed(params, rank),
self.tags,
+ self.appearance,
actions)
def __repr__(self):
class FireDef(object):
"""Fire definition (creates a bullet)."""
- def __init__(
- self, bullet, direction=None, speed=None, offset=None, tags=()):
+ def __init__(self, bullet, direction=None, speed=None, offset=None,
+ tags=(), appearance=None):
self.bullet = bullet
self.direction = direction
self.speed = speed
self.offset = offset
self.tags = set(tags)
+ self.appearance = appearance
def __getstate__(self):
state = []
state.append(("offset", self.offset))
if self.tags:
state.append(("tags", list(self.tags)))
+ if self.appearance:
+ state.append(("appearance", self.appearance))
try:
params = self.bullet.params
except AttributeError:
speed = None
offset = None
tags = set()
+ appearance = None
for subelem in element.getchildren():
tag = realtag(subelem)
offset = Offset.FromXML(doc, subelem)
elif tag == "tag":
tags.add(subelem.text)
+ elif tag == "appearance":
+ appearance = subelem.text
try:
- fire = cls(bullet, direction, speed, offset, tags)
+ fire = cls(bullet, direction, speed, offset, tags, appearance)
except UnboundLocalError as exc:
raise ParseError(str(exc))
else:
doc._fires[element.get("label")] = fire
return fire
- def __call__(self, params, rank):
- direction, speed, tags, actions = self.bullet(params, rank)
+ def __call__(self, owner, action, params, rank, created):
+ direction, speed, tags, appearance, actions = self.bullet(params, rank)
if self.direction:
direction = self.direction(params, rank)
if self.speed:
speed = self.speed(params, rank)
tags = tags.union(self.tags)
- return direction, speed, self.offset, tags, actions
+ if self.appearance:
+ appearance = self.appearance
+
+ if direction:
+ direction, type = direction
+ if type == "aim" or type is None:
+ direction += owner.aim
+ elif type == "sequence":
+ direction += action.previous_fire_direction
+ elif type == "relative":
+ direction += owner.direction
+ else:
+ direction = owner.aim
+ action.previous_fire_direction = direction
+
+ if speed:
+ speed, type = speed
+ if type == "sequence":
+ speed += action.previous_fire_speed
+ elif type == "relative":
+ # The reference Noiz implementation uses
+ # prvFireSpeed here, but the standard is
+ # pretty clear -- "In case of the type is
+ # "relative", ... the speed is relative to the
+ # speed of this bullet."
+ speed += owner.speed
+ else:
+ speed = 1
+ action.previous_fire_speed = speed
+
+ x, y = owner.x, owner.y
+ if self.offset:
+ off_x, off_y = self.offset(params, rank)
+ if self.offset.type == "relative":
+ s = sin(direction)
+ c = cos(direction)
+ x += c * off_x + s * off_y
+ y += s * off_x - c * off_y
+ else:
+ x += off_x
+ y += off_y
+
+ if appearance is None:
+ appearance = owner.appearance
+ bullet = owner.__class__(
+ x=x, y=y, direction=direction, speed=speed,
+ target=owner.target, actions=actions, rank=rank,
+ appearance=appearance, tags=tags, Action=action.__class__)
+ created.append(bullet)
def __repr__(self):
return "%s(direction=%r, speed=%r, bullet=%r)" % (
doc._fire_refs.append(fired)
return fired
- def __call__(self, params, rank):
- return self.fire(self.params(params, rank), rank)
+ def __call__(self, owner, action, params, rank, created):
+ params = self.params(params, rank)
+ return self.fire(owner, action, params, rank, created)
def __repr__(self):
return "%s(params=%r, fire=%r)" % (
wait=Wait,
vanish=Vanish,
tag=Tag,
+ appearance=Appearance,
untag=Untag,
action=ActionDef,
actionRef=ActionRef)
+ActionDef.CONSTRUCTORS["if"] = If
projects / python-bulletml.git / blobdiff