Within a clearing round the matched gems no longer all explode at once: each
gem's pop (and its burst) START is offset by a bounded per-gem delay so the
cells detonate as a ripple.
- board_anim.sx: clear_ripple_t(t,u) mirrors fall_stagger_t's (t-delay)/window,
delaying a gem's pop START by CLEAR_STAGGER_MAX*u (0.45 of the clear window).
Bounded: every gem still reaches local 1 (scale 0) by t==1, so none is left
mid-pop at the seam to the fall. clear_diag_span/clear_rank rank each matched
gem 0..1 by diagonal (col+row) PER ROUND, so even a 3-match ripples across the
full budget.
- board_view.sx render_clear: feed each matched gem's ranked, staggered local t
through the P18.1 clear_pop_scale (locked endpoints unchanged).
- board_fx.sx: bursts carry the same per-gem delay so they ripple in lockstep
with the pops. Per-round audio cue (P10.10) still fires once at t0, not per gem.
- Model untouched (same cells cleared, same final board); CLEAR_ANIM_DUR fixed,
so cascade-cue snapshots don't churn and M3TE_ANIM_TIME=0 still rests.
- tests/easing.sx: pin clear_ripple_t endpoints, bounded completion by t==1,
monotonicity, ripple ordering, and the diagonal rank.
- goldens: add p18_stagger (M3TE_FX=3 @ 0.22); refresh p18_pop, p6_fx_match,
p11_combo_deep (all pinned mid-clear, now showing the ripple).
Sharpen clear_pop_scale from a plain pop-then-shrink into a candy pop in
three beats over its local 0..1: a tiny anticipation squash dip (~8% below
rest), a snappy overshoot to ~1.40x via P15.1's ease_out_back, then an
accelerating collapse to nothing (ease_in_quad). Endpoints stay locked
(t=0 -> 1.0 rest, t=1 -> 0.0 gone), so the seam to the model board is clean
and M3TE_ANIM_TIME=0 still reproduces the rest board; the particle burst /
score popup compose on top unchanged. render_clear and CLEAR_ANIM_DUR are
untouched, so cascade-cue timing snapshots don't churn and the model is
unchanged.
tests/gem_pose.sx now pins the new envelope (locked rest endpoints, the
anticipation dip, the overshoot, the monotonic post-peak collapse) with its
expected snapshot updated.
goldens/p18_pop.png: new mid-clear pop golden at the overshoot peak
(M3TE_FX=3 M3TE_ANIM_TIME=0.21). goldens/p6_fx_match.png refreshed for the
new pop shape (same scene at its documented 0.22). README documents P18.1.
