Implement the first bits of bytecode processing, including the ability to go to an animation frame.
This commit is contained in:
Jennifer Taylor
parent
0a6635d993
commit
14c8ac9347
@ -1,9 +1,10 @@
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from typing import Dict, List, Tuple, Optional, Union
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from typing import Any, Dict, List, Tuple, Optional, Union
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from PIL import Image # type: ignore
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from .blend import affine_composite
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from .swf import SWF, Frame, Tag, AP2ShapeTag, AP2DefineSpriteTag, AP2PlaceObjectTag, AP2RemoveObjectTag, AP2DoActionTag, AP2DefineFontTag, AP2DefineEditTextTag, AP2PlaceCameraTag
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from .types import Color, Matrix, Point, Rectangle
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from .decompile import ByteCode
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from .types import Color, Matrix, Point, Rectangle, AP2Trigger, AP2Action, PushAction, StoreRegisterAction, StringConstant, Register, THIS, UNDEFINED
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from .geo import Shape, DrawParams
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from .util import VerboseOutput
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@ -47,7 +48,7 @@ class RegisteredDummy:
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class PlacedObject:
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# An object that occupies the screen at some depth.
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def __init__(self, object_id: int, depth: int, rotation_offset: Point, transform: Matrix, mult_color: Color, add_color: Color, blend: int) -> None:
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def __init__(self, object_id: int, depth: int, rotation_offset: Point, transform: Matrix, mult_color: Color, add_color: Color, blend: int, mask: Optional[Rectangle]) -> None:
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self.__object_id = object_id
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self.__depth = depth
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self.rotation_offset = rotation_offset
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@ -55,6 +56,7 @@ class PlacedObject:
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self.mult_color = mult_color
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self.add_color = add_color
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self.blend = blend
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self.mask = mask
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@property
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def source(self) -> Union[RegisteredClip, RegisteredShape, RegisteredDummy]:
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@ -75,8 +77,19 @@ class PlacedObject:
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class PlacedShape(PlacedObject):
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# A shape that occupies its parent clip at some depth. Placed by an AP2PlaceObjectTag
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# referencing an AP2ShapeTag.
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def __init__(self, object_id: int, depth: int, rotation_offset: Point, transform: Matrix, mult_color: Color, add_color: Color, blend: int, source: RegisteredShape) -> None:
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super().__init__(object_id, depth, rotation_offset, transform, mult_color, add_color, blend)
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def __init__(
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self,
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object_id: int,
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depth: int,
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rotation_offset: Point,
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transform: Matrix,
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mult_color: Color,
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add_color: Color,
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blend: int,
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mask: Optional[Rectangle],
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source: RegisteredShape,
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) -> None:
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super().__init__(object_id, depth, rotation_offset, transform, mult_color, add_color, blend, mask)
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self.__source = source
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@property
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@ -90,11 +103,24 @@ class PlacedShape(PlacedObject):
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class PlacedClip(PlacedObject):
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# A movieclip that occupies its parent clip at some depth. Placed by an AP2PlaceObjectTag
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# referencing an AP2DefineSpriteTag. Essentially an embedded movie clip.
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def __init__(self, object_id: int, depth: int, rotation_offset: Point, transform: Matrix, mult_color: Color, add_color: Color, blend: int, source: RegisteredClip) -> None:
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super().__init__(object_id, depth, rotation_offset, transform, mult_color, add_color, blend)
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def __init__(
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self,
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object_id: int,
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depth: int,
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rotation_offset: Point,
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transform: Matrix,
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mult_color: Color,
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add_color: Color,
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blend: int,
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mask: Optional[Rectangle],
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source: RegisteredClip,
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) -> None:
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super().__init__(object_id, depth, rotation_offset, transform, mult_color, add_color, blend, mask)
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self.placed_objects: List[PlacedObject] = []
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self.frame: int = 0
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self.__source = source
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self.playing: bool = True
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self.requested_frame: Optional[int] = None
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@property
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def source(self) -> RegisteredClip:
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@ -111,11 +137,49 @@ class PlacedClip(PlacedObject):
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def __repr__(self) -> str:
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return f"PlacedClip(object_id={self.object_id}, depth={self.depth}, source={self.source}, frame={self.frame}, total_frames={len(self.source.frames)}, finished={self.finished})"
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# The following are attributes and functions necessary to support some simple bytecode.
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def gotoAndPlay(self, frame: Any) -> None:
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if not isinstance(frame, int):
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# TODO: Technically this should also allow string labels to frames as identified in the
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# SWF specification, but we don't support that here.
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print(f"WARNING: Non-integer frame {frame} to gotoAndPlay function!")
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return
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if frame <= 0 or frame > len(self.source.frames):
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return
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self.requested_frame = frame
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self.playing = True
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@property
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def frameOffset(self) -> int:
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return self.requested_frame or self.frame
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@frameOffset.setter
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def frameOffset(self, val: Any) -> None:
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if not isinstance(val, int):
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# TODO: Technically this should also allow string labels to frames as identified in the
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# SWF specification, but we don't support that here.
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print(f"WARNING: Non-integer frameOffset {val} to frameOffset attribute!")
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return
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if val < 0 or val >= len(self.source.frames):
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return
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self.requested_frame = val + 1
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class PlacedDummy(PlacedObject):
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# A reference to an object we can't find because we're missing the import.
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def __init__(self, object_id: int, depth: int, rotation_offset: Point, transform: Matrix, mult_color: Color, add_color: Color, blend: int, source: RegisteredDummy) -> None:
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super().__init__(object_id, depth, rotation_offset, transform, mult_color, add_color, blend)
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def __init__(
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self,
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object_id: int,
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depth: int,
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rotation_offset: Point,
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transform: Matrix,
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mult_color: Color,
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add_color: Color,
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blend: int,
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mask: Optional[Rectangle],
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source: RegisteredDummy,
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) -> None:
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super().__init__(object_id, depth, rotation_offset, transform, mult_color, add_color, blend, mask)
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self.__source = source
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@property
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@ -123,6 +187,50 @@ class PlacedDummy(PlacedObject):
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return self.__source
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class Movie:
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def __init__(self, root: PlacedClip) -> None:
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self.__root = root
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def getInstanceAtDepth(self, depth: Any) -> Any:
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if not isinstance(depth, int):
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return UNDEFINED
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# For some reason, it looks like internally the depth of all objects is
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# stored added to -0x4000, so let's reverse that.
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depth = depth + 0x4000
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for obj in self.__root.placed_objects:
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if obj.depth == depth:
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return obj
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print(f"WARNING: Could not find object at depth {depth}!")
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return UNDEFINED
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class AEPLib:
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def __init__(self, this: PlacedObject, movie: Movie) -> None:
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self.__this = this
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self.__movie = movie
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def aep_set_rect_mask(self, thisptr: Any, left: Any, right: Any, top: Any, bottom: Any) -> None:
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if not isinstance(left, (int, float)) or not isinstance(right, (int, float)) or not isinstance(top, (int, float)) or not isinstance(bottom, (int, float)):
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print("WARNING: Ignoring aeplib.aep_set_rect_mask call with invalid parameters!")
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return
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if thisptr is THIS:
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self.__this.mask = Rectangle(
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left=float(left),
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right=float(right),
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top=float(top),
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bottom=float(bottom),
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)
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else:
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print("WARNING: Ignoring aeplib.aep_set_rect_mask call with unrecognized target!")
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def aep_set_set_frame(self, thisptr: Any, frame: Any) -> None:
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# I have no idea what this should do, so let's ignore it.
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pass
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class AFPRenderer(VerboseOutput):
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def __init__(self, shapes: Dict[str, Shape] = {}, textures: Dict[str, Image.Image] = {}, swfs: Dict[str, SWF] = {}, single_threaded: bool = False) -> None:
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super().__init__()
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@ -137,6 +245,7 @@ class AFPRenderer(VerboseOutput):
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# Internal render parameters.
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self.__registered_objects: Dict[int, Union[RegisteredShape, RegisteredClip, RegisteredDummy]] = {}
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self.__movie: Optional[Movie] = None
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def add_shape(self, name: str, data: Shape) -> None:
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# Register a named shape with the renderer.
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@ -193,6 +302,119 @@ class AFPRenderer(VerboseOutput):
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return paths
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def __execute_bytecode(self, bytecode: ByteCode, clip: PlacedClip) -> None:
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if self.__movie is None:
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raise Exception("Logic error, executing bytecode outside of a rendering movie clip!")
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location: int = 0
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stack: List[Any] = []
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variables: Dict[str, Any] = {
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'aeplib': AEPLib(clip, self.__movie),
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'GLOBAL': self.__movie,
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}
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registers: List[Any] = [UNDEFINED] * 256
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while location < len(bytecode.actions):
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action = bytecode.actions[location]
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if action.opcode == AP2Action.END:
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# End the execution.
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self.vprint("Ending bytecode execution.")
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break
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elif action.opcode == AP2Action.GET_VARIABLE:
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varname = stack.pop()
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# Look up the variable, put it on the stack.
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if varname in variables:
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stack.append(variables[varname])
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else:
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stack.append(UNDEFINED)
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elif action.opcode == AP2Action.SET_MEMBER:
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# Grab what we're about to do.
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set_value = stack.pop()
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attribute = stack.pop()
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obj = stack.pop()
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if not hasattr(obj, attribute):
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print(f"WARNING: Tried to set attribute {attribute} on {obj} but that attribute doesn't exist!")
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else:
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setattr(obj, attribute, set_value)
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elif action.opcode == AP2Action.CALL_METHOD:
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# Grab the method name.
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methname = stack.pop()
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# Grab the object to perform the call on.
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obj = stack.pop()
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# Grab the parameters to pass to the function.
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num_params = stack.pop()
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if not isinstance(num_params, int):
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raise Exception("Logic error, cannot get number of parameters to method call!")
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params = []
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for _ in range(num_params):
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params.append(stack.pop())
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# Look up the python function we're calling.
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try:
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meth = getattr(obj, methname)
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# Call it, set the return on the stack.
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stack.append(meth(*params))
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except AttributeError:
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# Function does not exist!
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print(f"WARNING: Tried to call {methname}({', '.join(repr(s) for s in params)}) on {obj} but that method doesn't exist!")
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stack.append(UNDEFINED)
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elif action.opcode == AP2Action.CALL_FUNCTION:
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# Grab the method name.
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funcname = stack.pop()
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# Grab the object to perform the call on.
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obj = variables['GLOBAL']
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# Grab the parameters to pass to the function.
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num_params = stack.pop()
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if not isinstance(num_params, int):
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raise Exception("Logic error, cannot get number of parameters to function call!")
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params = []
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for _ in range(num_params):
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params.append(stack.pop())
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# Look up the python function we're calling.
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try:
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func = getattr(obj, funcname)
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# Call it, set the return on the stack.
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stack.append(func(*params))
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except AttributeError:
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# Function does not exist!
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print(f"WARNING: Tried to call {funcname}({', '.join(repr(s) for s in params)}) on {obj} but that function doesn't exist!")
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stack.append(UNDEFINED)
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elif isinstance(action, PushAction):
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for obj in action.objects:
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if isinstance(obj, Register):
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stack.append(registers[obj.no])
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elif isinstance(obj, StringConstant):
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if obj.alias:
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stack.append(obj.alias)
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else:
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stack.append(StringConstant.property_to_name(obj.const))
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else:
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stack.append(obj)
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elif isinstance(action, StoreRegisterAction):
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set_value = stack.pop()
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if action.preserve_stack:
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stack.append(set_value)
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for reg in action.registers:
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registers[reg.no] = set_value
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elif action.opcode == AP2Action.POP:
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stack.pop()
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else:
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print(f"WARNING: Unhandled opcode {action} with stack {stack}")
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# Next opcode!
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location += 1
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def __place(self, tag: Tag, operating_clip: PlacedClip, prefix: str = "") -> Tuple[Optional[PlacedClip], bool]:
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# "Place" a tag on the screen. Most of the time, this means performing the action of the tag,
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# such as defining a shape (registering it with our shape list) or adding/removing an object.
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@ -253,6 +475,7 @@ class AFPRenderer(VerboseOutput):
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new_mult_color,
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new_add_color,
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new_blend,
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obj.mask,
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newobj,
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)
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@ -267,6 +490,7 @@ class AFPRenderer(VerboseOutput):
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new_mult_color,
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new_add_color,
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new_blend,
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obj.mask,
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newobj,
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)
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operating_clip.placed_objects[i] = new_clip
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@ -282,6 +506,7 @@ class AFPRenderer(VerboseOutput):
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new_mult_color,
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new_add_color,
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new_blend,
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obj.mask,
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newobj,
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)
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@ -320,6 +545,7 @@ class AFPRenderer(VerboseOutput):
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tag.mult_color or Color(1.0, 1.0, 1.0, 1.0),
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tag.add_color or Color(0.0, 0.0, 0.0, 0.0),
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tag.blend or 0,
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None,
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newobj,
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)
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)
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@ -327,14 +553,6 @@ class AFPRenderer(VerboseOutput):
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# Didn't place a new clip, changed the parent clip.
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return None, True
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elif isinstance(newobj, RegisteredClip):
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# TODO: Handle ON_LOAD triggers for this object. Many of these are just calls into
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# the game to set the current frame that we're on, but sometimes its important.
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for flags, code in tag.triggers.items():
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for bytecode in code:
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print("WARNING: Unhandled PLACE_OBJECT trigger!")
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if self.verbose:
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print(bytecode.decompile())
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placed_clip = PlacedClip(
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tag.object_id,
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tag.depth,
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@ -343,10 +561,18 @@ class AFPRenderer(VerboseOutput):
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tag.mult_color or Color(1.0, 1.0, 1.0, 1.0),
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tag.add_color or Color(0.0, 0.0, 0.0, 0.0),
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tag.blend or 0,
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None,
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newobj,
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)
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operating_clip.placed_objects.append(placed_clip)
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for flags, code in tag.triggers.items():
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if flags & AP2Trigger.ON_LOAD:
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for bytecode in code:
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self.__execute_bytecode(bytecode, placed_clip)
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else:
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print("WARNING: Unhandled PLACE_OBJECT trigger with flags {flags}!")
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# Placed a new clip, changed the parent.
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return placed_clip, True
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elif isinstance(newobj, RegisteredDummy):
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@ -359,6 +585,7 @@ class AFPRenderer(VerboseOutput):
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tag.mult_color or Color(1.0, 1.0, 1.0, 1.0),
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tag.add_color or Color(0.0, 0.0, 0.0, 0.0),
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tag.blend or 0,
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None,
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newobj,
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)
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)
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@ -402,13 +629,14 @@ class AFPRenderer(VerboseOutput):
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if not removed_objects:
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print(f"WARNING: Couldn't find object to remove by ID {tag.object_id} and depth {tag.depth}!")
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# TODO: Handle ON_UNLOAD triggers for this object. I don't think I've ever seen one
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# on any object so this might be a pedantic request.
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# Didn't place a new clip, changed parent clip.
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return None, True
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elif isinstance(tag, AP2DoActionTag):
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print("WARNING: Unhandled DO_ACTION tag!")
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if self.verbose:
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print(tag.bytecode.decompile())
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self.__execute_bytecode(tag.bytecode, operating_clip)
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# Didn't place a new clip.
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return None, False
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@ -457,6 +685,9 @@ class AFPRenderer(VerboseOutput):
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if parent_blend not in {0, 1, 2} and blend in {0, 1, 2}:
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blend = parent_blend
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if renderable.mask:
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print(f"WARNING: Unsupported mask Rectangle({renderable.mask})!")
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# Render individual shapes if this is a sprite.
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if isinstance(renderable, PlacedClip):
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if only_depths is not None:
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@ -553,30 +784,50 @@ class AFPRenderer(VerboseOutput):
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# Track whether anything in ourselves or our children changes during this processing.
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changed = False
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# Clips that are part of our own placed objects which we should handle.
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child_clips = [c for c in clip.placed_objects if isinstance(c, PlacedClip)]
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while True:
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# See if this clip should actually be played.
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if clip.requested_frame is None and not clip.playing:
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break
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# Execute each tag in the frame.
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if not clip.finished:
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frame = clip.source.frames[clip.frame]
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tags = clip.source.tags[frame.start_tag_offset:(frame.start_tag_offset + frame.num_tags)]
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# See if we need to fast forward to a frame.
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if clip.requested_frame is not None:
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if clip.frame > clip.requested_frame:
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# Rewind this clip to the beginning so we can replay until the requested frame.
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clip.placed_objects = []
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clip.frame = 0
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elif clip.frame == clip.requested_frame:
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# We played up through the requested frame, we're done!
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clip.requested_frame = None
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break
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for tagno, tag in enumerate(tags):
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# Perform the action of this tag.
|
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self.vprint(f"{prefix} Sprite Tag ID: {clip.source.tag_id}, Current Tag: {frame.start_tag_offset + tagno}, Num Tags: {frame.num_tags}")
|
||||
new_clip, clip_changed = self.__place(tag, clip, prefix=prefix)
|
||||
changed = changed or clip_changed
|
||||
# Clips that are part of our own placed objects which we should handle.
|
||||
child_clips = [c for c in clip.placed_objects if isinstance(c, PlacedClip)]
|
||||
|
||||
# If we create a new movie clip, process it as well for this frame.
|
||||
if new_clip:
|
||||
changed = self.__process_tags(new_clip, prefix=prefix + " ") or changed
|
||||
# Execute each tag in the frame.
|
||||
if not clip.finished:
|
||||
frame = clip.source.frames[clip.frame]
|
||||
tags = clip.source.tags[frame.start_tag_offset:(frame.start_tag_offset + frame.num_tags)]
|
||||
|
||||
# Now, handle each of the existing clips.
|
||||
for child in child_clips:
|
||||
changed = self.__process_tags(child, prefix=prefix + " ") or changed
|
||||
for tagno, tag in enumerate(tags):
|
||||
# Perform the action of this tag.
|
||||
self.vprint(f"{prefix} Sprite Tag ID: {clip.source.tag_id}, Current Tag: {frame.start_tag_offset + tagno}, Num Tags: {frame.num_tags}")
|
||||
new_clip, clip_changed = self.__place(tag, clip, prefix=prefix)
|
||||
changed = changed or clip_changed
|
||||
|
||||
# Now, advance the frame for this clip.
|
||||
clip.advance()
|
||||
# If we create a new movie clip, process it as well for this frame.
|
||||
if new_clip:
|
||||
changed = self.__process_tags(new_clip, prefix=prefix + " ") or changed
|
||||
|
||||
# Now, handle each of the existing clips.
|
||||
for child in child_clips:
|
||||
changed = self.__process_tags(child, prefix=prefix + " ") or changed
|
||||
|
||||
# Now, advance the frame for this clip.
|
||||
clip.advance()
|
||||
|
||||
# See if we should bail.
|
||||
if clip.requested_frame is None:
|
||||
break
|
||||
|
||||
self.vprint(f"{prefix}Finished handling placed clip {clip.object_id} at depth {clip.depth}")
|
||||
|
||||
@ -687,12 +938,14 @@ class AFPRenderer(VerboseOutput):
|
||||
Color(1.0, 1.0, 1.0, 1.0),
|
||||
Color(0.0, 0.0, 0.0, 0.0),
|
||||
0,
|
||||
None,
|
||||
RegisteredClip(
|
||||
None,
|
||||
swf.frames,
|
||||
swf.tags,
|
||||
),
|
||||
)
|
||||
self.__movie = Movie(root_clip)
|
||||
|
||||
# These could possibly be overwritten from an external source of we wanted.
|
||||
actual_mult_color = Color(1.0, 1.0, 1.0, 1.0)
|
||||
@ -726,4 +979,7 @@ class AFPRenderer(VerboseOutput):
|
||||
# Allow ctrl-c to end early and render a partial animation.
|
||||
print(f"WARNING: Interrupted early, will render only {len(frames)}/{len(root_clip.source.frames)} frames of animation!")
|
||||
|
||||
# Clean up
|
||||
self.movie = None
|
||||
|
||||
return int(spf * 1000.0), frames
|
||||
|
||||
@ -8,6 +8,7 @@ from .types import Matrix, Color, Point, Rectangle
|
||||
from .types import (
|
||||
AP2Action,
|
||||
AP2Tag,
|
||||
AP2Trigger,
|
||||
DefineFunction2Action,
|
||||
InitRegisterAction,
|
||||
StoreRegisterAction,
|
||||
@ -1235,33 +1236,33 @@ class SWF(TrackedCoverage, VerboseOutput):
|
||||
self.add_coverage(dataoffset + evt_offset, 8)
|
||||
|
||||
events: List[str] = []
|
||||
if evt_flags & 0x1:
|
||||
if evt_flags & AP2Trigger.ON_LOAD:
|
||||
events.append("ON_LOAD")
|
||||
if evt_flags & 0x2:
|
||||
if evt_flags & AP2Trigger.ON_ENTER_FRAME:
|
||||
events.append("ON_ENTER_FRAME")
|
||||
if evt_flags & 0x4:
|
||||
if evt_flags & AP2Trigger.ON_UNLOAD:
|
||||
events.append("ON_UNLOAD")
|
||||
if evt_flags & 0x8:
|
||||
if evt_flags & AP2Trigger.ON_MOUSE_MOVE:
|
||||
events.append("ON_MOUSE_MOVE")
|
||||
if evt_flags & 0x10:
|
||||
if evt_flags & AP2Trigger.ON_MOUSE_DOWN:
|
||||
events.append("ON_MOUSE_DOWN")
|
||||
if evt_flags & 0x20:
|
||||
if evt_flags & AP2Trigger.ON_MOUSE_UP:
|
||||
events.append("ON_MOUSE_UP")
|
||||
if evt_flags & 0x40:
|
||||
if evt_flags & AP2Trigger.ON_KEY_DOWN:
|
||||
events.append("ON_KEY_DOWN")
|
||||
if evt_flags & 0x80:
|
||||
if evt_flags & AP2Trigger.ON_KEY_UP:
|
||||
events.append("ON_KEY_UP")
|
||||
if evt_flags & 0x100:
|
||||
if evt_flags & AP2Trigger.ON_DATA:
|
||||
events.append("ON_DATA")
|
||||
if evt_flags & 0x400:
|
||||
if evt_flags & AP2Trigger.ON_PRESS:
|
||||
events.append("ON_PRESS")
|
||||
if evt_flags & 0x800:
|
||||
if evt_flags & AP2Trigger.ON_RELEASE:
|
||||
events.append("ON_RELEASE")
|
||||
if evt_flags & 0x1000:
|
||||
if evt_flags & AP2Trigger.ON_RELEASE_OUTSIDE:
|
||||
events.append("ON_RELEASE_OUTSIDE")
|
||||
if evt_flags & 0x2000:
|
||||
if evt_flags & AP2Trigger.ON_ROLL_OVER:
|
||||
events.append("ON_ROLL_OVER")
|
||||
if evt_flags & 0x4000:
|
||||
if evt_flags & AP2Trigger.ON_ROLL_OUT:
|
||||
events.append("ON_ROLL_OUT")
|
||||
|
||||
bytecode_offset += evt_offset
|
||||
|
||||
@ -4,6 +4,7 @@ from .ap2 import (
|
||||
AP2Action,
|
||||
AP2Object,
|
||||
AP2Pointer,
|
||||
AP2Trigger,
|
||||
DefineFunction2Action,
|
||||
Expression,
|
||||
GenericObject,
|
||||
@ -39,6 +40,7 @@ __all__ = [
|
||||
'AP2Action',
|
||||
'AP2Object',
|
||||
'AP2Pointer',
|
||||
'AP2Trigger',
|
||||
'DefineFunction2Action',
|
||||
'Expression',
|
||||
'GenericObject',
|
||||
|
||||
@ -2935,3 +2935,20 @@ class AP2Pointer:
|
||||
display_P = 0xb4
|
||||
geom_P = 0xb5
|
||||
filtesr_P = 0xb6
|
||||
|
||||
|
||||
class AP2Trigger:
|
||||
ON_LOAD = 0x1
|
||||
ON_ENTER_FRAME = 0x2
|
||||
ON_UNLOAD = 0x4
|
||||
ON_MOUSE_MOVE = 0x8
|
||||
ON_MOUSE_DOWN = 0x10
|
||||
ON_MOUSE_UP = 0x20
|
||||
ON_KEY_DOWN = 0x40
|
||||
ON_KEY_UP = 0x80
|
||||
ON_DATA = 0x100
|
||||
ON_PRESS = 0x400
|
||||
ON_RELEASE = 0x800
|
||||
ON_RELEASE_OUTSIDE = 0x1000
|
||||
ON_ROLL_OVER = 0x2000
|
||||
ON_ROLL_OUT = 0x4000
|
||||
|
||||
Loading…
Reference in New Issue
Block a user