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The review lands: twelve sprites get their motion stories

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The outside review's diagnosis was right — the weak sprites had one
element doing one motion. Now each tells its story: the whiff is
three air streaks sweeping past a dodger with a wobble; the hit is a
contact flash, a compressed ring punched outward, and flying debris;
the streak's head visibly travels, drawing a tapered trail that
collapses into the destination; the sparkle snaps white-hot between
counter-rotating glints and sheds motes; the tacks are drawn
silhouettes now, points up as a tack on the floor menaces, hopping in
sequence; the claw slashes reveal one by one along their length with
a bright leading edge while the whole strike rakes sideways.

The sector ghosts keep their dashed frames but earn motion arcs,
directional chevrons, corner dust, and a grinding shudder as they
settle. The portal opens wide, ripples along its length, and pinches
shut; cell mouths collapse rings of energy inward. The thornbush
springs actual branches with thorn spurs. The slime is an asymmetric
blob that grips, with elastic strands snapping toward the caught.
Dust gains contrast, varied grain, and blows perpendicular to the
wall that shed it.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Eric Wagoner
2026-08-17 10:30:48 -04:00
co-authored by Claude Fable 5
parent a88cae3a0e
commit bcaa06251a
11 changed files with 474 additions and 169 deletions
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packages/web/src/fx-sprites/Streak.svelte
+24 -25
View File
@@ -3,42 +3,41 @@
import { center } from "./geom";
let { fx }: { fx: FxOf<"streak"> } = $props();
const uid = $props.id();
const a = $derived(center(fx.from));
const b = $derived(center(fx.to));
const d = $derived(`M ${a.x} ${a.y} L ${b.x} ${b.y}`);
</script>
<defs>
<linearGradient id={`streak-trail-${uid}`}
x1={a.x} y1={a.y} x2={b.x} y2={b.y} gradientUnits="userSpaceOnUse">
<stop offset="0" stop-color="#e9e1cb" stop-opacity="0" />
<stop offset="0.7" stop-color="#e9e1cb" stop-opacity="0.6" />
<stop offset="1" stop-color="#fffdf0" stop-opacity="0.95" />
</linearGradient>
</defs>
<line x1={a.x} y1={a.y} x2={b.x} y2={b.y} stroke={`url(#streak-trail-${uid})`} class="trail" />
<circle cx={b.x} cy={b.y} r="5" class="head" />
<path {d} pathLength="100" class="trail wide" />
<path {d} pathLength="100" class="trail bright" />
<circle r="4.5" class="head" cx="0" cy="0">
<animateMotion dur="0.26s" fill="freeze" path={d} calcMode="spline"
keySplines="0.3 0 0.4 1" keyTimes="0;1" keyPoints="0;1" />
</circle>
<style>
.trail {
stroke-width: 6;
fill: none;
stroke-linecap: round;
animation: trail-fade 0.55s ease-out forwards;
stroke-dasharray: 100 100;
animation: draw-collapse 0.55s ease-out forwards;
}
.trail.wide { stroke: rgba(233, 225, 203, 0.4); stroke-width: 7; }
.trail.bright { stroke: rgba(255, 253, 240, 0.9); stroke-width: 3; }
.head {
transform-box: fill-box;
transform-origin: center;
fill: rgba(255, 253, 240, 0.9);
animation: head-land 0.45s ease-out forwards;
fill: #fffdf0;
animation: head-life 0.5s ease-out forwards;
}
@keyframes trail-fade {
0% { opacity: 0.95; }
/* Draw from source to head, then the tail chases it into the destination. */
@keyframes draw-collapse {
0% { stroke-dashoffset: 100; opacity: 0.95; }
47% { stroke-dashoffset: 0; opacity: 0.95; }
100% { stroke-dashoffset: -100; opacity: 0; }
}
@keyframes head-life {
0% { opacity: 0; }
12% { opacity: 1; }
60% { opacity: 1; }
100% { opacity: 0; }
}
@keyframes head-land {
0% { opacity: 0; transform: scale(0.4); }
35% { opacity: 1; transform: scale(1.3); }
100% { opacity: 0; transform: scale(0.9); }
}
</style>