Files
Mainline/engine/display/backends/replay.py
David Gwilliam 238bac1bb2 feat: Complete pipeline hot-rebuild implementation with acceptance tests
- Implements pipeline hot-rebuild with state preservation (issue #43)
- Adds auto-injection of MVP stages for missing capabilities
- Adds radial camera mode for polar coordinate scanning
- Adds afterimage and motionblur effects using framebuffer history
- Adds comprehensive acceptance tests for camera modes and pipeline rebuild
- Updates presets.toml with new effect configurations

Related to: #35 (Pipeline Mutation API epic)
Closes: #43, #44, #45
2026-03-19 03:34:06 -07:00

123 lines
3.2 KiB
Python

"""
Replay display backend - plays back recorded frames.
"""
from typing import Any
class ReplayDisplay:
"""Replay display - plays back recorded frames.
This display reads frames from a recording (list of frame data)
and yields them sequentially, useful for testing and demo purposes.
"""
width: int = 80
height: int = 24
def __init__(self):
self._frames: list[dict[str, Any]] = []
self._current_frame = 0
self._playback_index = 0
self._loop = False
def init(self, width: int, height: int, reuse: bool = False) -> None:
"""Initialize display with dimensions.
Args:
width: Terminal width in characters
height: Terminal height in rows
reuse: Ignored for ReplayDisplay
"""
self.width = width
self.height = height
def set_frames(self, frames: list[dict[str, Any]]) -> None:
"""Set frames to replay.
Args:
frames: List of frame dicts with 'buffer', 'width', 'height'
"""
self._frames = frames
self._current_frame = 0
self._playback_index = 0
def set_loop(self, loop: bool) -> None:
"""Set loop playback mode.
Args:
loop: True to loop, False to stop at end
"""
self._loop = loop
def show(self, buffer: list[str], border: bool = False) -> None:
"""Display a frame (ignored in replay mode).
Args:
buffer: Buffer to display (ignored)
border: Border flag (ignored)
"""
pass
def get_next_frame(self) -> list[str] | None:
"""Get the next frame in the recording.
Returns:
Buffer list of strings, or None if playback is done
"""
if not self._frames:
return None
if self._playback_index >= len(self._frames):
if self._loop:
self._playback_index = 0
else:
return None
frame = self._frames[self._playback_index]
self._playback_index += 1
return frame.get("buffer")
def reset(self) -> None:
"""Reset playback to the beginning."""
self._playback_index = 0
def seek(self, index: int) -> None:
"""Seek to a specific frame.
Args:
index: Frame index to seek to
"""
if 0 <= index < len(self._frames):
self._playback_index = index
def is_finished(self) -> bool:
"""Check if playback is finished.
Returns:
True if at end of frames and not looping
"""
return not self._loop and self._playback_index >= len(self._frames)
def clear(self) -> None:
pass
def cleanup(self) -> None:
pass
def get_dimensions(self) -> tuple[int, int]:
"""Get current dimensions.
Returns:
(width, height) in character cells
"""
return (self.width, self.height)
def is_quit_requested(self) -> bool:
"""Check if quit was requested (optional protocol method)."""
return False
def clear_quit_request(self) -> None:
"""Clear quit request (optional protocol method)."""
pass