# ── Rewind mechanic (shared across all scripts) ──────────────────────────────
# Where the next rewind lands. Set this to a label string at each checkpoint.
default checkpoint = None

# Optional: a label to `call` for per-checkpoint flag resets, or None.
# Define it like:  label .my_checkpoint_reset:  $ some_flag = False  return
default rewind_reset_label = None

# Plays the shared rewind effect, then returns to `destination` (a label string).
# Uses `call` (not `jump`) so it is re-entrant: rewinding to a label that is
# already on the call stack (e.g. back to a choice mid-spar) returns cleanly
# to the caller instead of corrupting the stack.
# Call as:  call rewind_to ".some_label"
label rewind_to:
    scene black
    with dissolve
    show screen teal_wash
    "The world pulls back."
    "Colour drains to teal. Sound slows to nothing."
    hide screen teal_wash
    scene black
    with dissolve
    # Run any per-checkpoint reset statements (e.g. $ rewind_used = False)
    if rewind_reset_label is not None:
        call expression rewind_reset_label
    call expression checkpoint

screen teal_wash():
    zorder 20
    add Solid("#1a4a4a") alpha 0.7