Jared Miller
9844749edd
fly <direction> moves the player 5 tiles, ignoring terrain. Leaves a trail of bright white ~ clouds that fade after 2 seconds. Effects system supports arbitrary timed visual overlays on the viewport. TinTin aliases: fn/fs/fe/fw/fne/fnw/fse/fsw.
46 lines
1.2 KiB
Python
46 lines
1.2 KiB
Python
"""Temporary visual effects that appear on the map and fade over time."""
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import time
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from dataclasses import dataclass
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@dataclass
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class Effect:
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"""A temporary visual overlay on the world map."""
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x: int
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y: int
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char: str
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color: str # ANSI color code
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expires_at: float # monotonic time when this effect disappears
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# Global list of active effects
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active_effects: list[Effect] = []
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def add_effect(x: int, y: int, char: str, color: str, ttl: float) -> None:
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"""Add a temporary visual effect at (x, y).
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Args:
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x: World X coordinate
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y: World Y coordinate
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char: Character to display
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color: ANSI color code for rendering
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ttl: Time to live in seconds
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"""
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active_effects.append(
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Effect(x=x, y=y, char=char, color=color, expires_at=time.monotonic() + ttl)
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)
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def get_effects_at(x: int, y: int) -> list[Effect]:
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"""Get all non-expired effects at a given position."""
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now = time.monotonic()
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return [e for e in active_effects if e.x == x and e.y == y and e.expires_at > now]
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def clear_expired() -> None:
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"""Remove all expired effects from the active list."""
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now = time.monotonic()
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active_effects[:] = [e for e in active_effects if e.expires_at > now]
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