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Add dispatch milestone animation #142

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Add dispatch milestone animation #142

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190 changes: 190 additions & 0 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -180,6 +180,77 @@
pointer-events: none;
}

.milestone {
position: fixed;
inset: 0;
z-index: 20;
display: grid;
place-items: center;
pointer-events: none;
}

.milestone-badge {
position: relative;
display: grid;
min-width: min(320px, calc(100vw - 40px));
min-height: 156px;
place-items: center;
padding: 24px;
border: 2px solid var(--ink);
border-radius: 8px;
background: #fffdf5;
box-shadow: 0 18px 40px rgba(0, 0, 0, 0.16);
text-align: center;
animation: milestone-pop 2200ms ease both;
}

.milestone-count {
color: var(--ink);
font-size: clamp(56px, 14vw, 108px);
font-weight: 850;
letter-spacing: 0;
line-height: 0.9;
}

.milestone-label {
margin-top: 8px;
color: var(--ink);
font-size: 15px;
font-weight: 700;
letter-spacing: 0;
}

.milestone-track {
position: absolute;
right: 18px;
bottom: 18px;
left: 18px;
height: 3px;
overflow: hidden;
background: var(--ink);
}

.milestone-engine {
position: absolute;
bottom: 9px;
left: 18px;
font-size: 28px;
line-height: 1;
animation: milestone-engine 1300ms 220ms ease-in-out both;
}

.confetti {
position: fixed;
top: 50%;
left: 50%;
width: 10px;
height: 16px;
border-radius: 2px;
background: var(--confetti-color);
transform: translate(-50%, -50%) rotate(var(--confetti-rotate));
animation: confetti-burst 1400ms ease-out forwards;
}

@keyframes wiggle {
0%,
100% {
Expand Down Expand Up @@ -227,6 +298,60 @@
}
}

@keyframes milestone-pop {
0% {
opacity: 0;
transform: translateY(22px) scale(0.82) rotate(-3deg);
}

12%,
72% {
opacity: 1;
transform: translateY(0) scale(1) rotate(0);
}

82% {
transform: translateY(0) scale(1.04) rotate(1deg);
}

100% {
opacity: 0;
transform: translateY(-24px) scale(0.94) rotate(2deg);
}
}

@keyframes milestone-engine {
0% {
transform: translateX(0) scaleX(-1);
}

100% {
transform: translateX(calc(min(320px, 100vw - 40px) - 72px))
scaleX(-1);
}
}

@keyframes confetti-burst {
0% {
opacity: 0;
transform: translate(-50%, -50%) scale(0.4)
rotate(var(--confetti-rotate));
}

12% {
opacity: 1;
}

100% {
opacity: 0;
transform: translate(
calc(-50% + var(--confetti-x)),
calc(-50% + var(--confetti-y))
)
scale(0.9) rotate(calc(var(--confetti-rotate) + 460deg));
}
}

@media (prefers-reduced-motion: reduce) {
.hero,
.train-emoji:hover {
Expand All @@ -244,6 +369,15 @@
animation: fade-blip 1500ms ease both !important;
}

.milestone-badge {
animation: milestone-fade 1800ms ease both;
}

.milestone-engine,
.confetti {
display: none;
}

@keyframes fade-blip {
0% {
opacity: 0;
Expand All @@ -261,6 +395,18 @@
transform: translateX(-50%) scale(1);
}
}

@keyframes milestone-fade {
0%,
100% {
opacity: 0;
}

20%,
80% {
opacity: 1;
}
}
}
</style>
</head>
Expand Down Expand Up @@ -294,6 +440,8 @@
const PUFF_COUNT = 4;
const MIN_DURATION_MS = 4500;
const MAX_DURATION_MS = 7500;
const MILESTONE_INTERVAL = 10;
const CONFETTI_COLORS = ["#ff4f64", "#ffd166", "#06d6a0", "#118ab2", "#f78c6b"];

const dispatcher = document.querySelector("#dispatcher");
const hero = document.querySelector("#hero");
Expand Down Expand Up @@ -357,6 +505,47 @@
}, delay);
}

function createConfettiPiece(index) {
const piece = document.createElement("span");
const angle = (Math.PI * 2 * index) / 24;
const distance = 120 + Math.random() * 170;
const x = Math.cos(angle) * distance;
const y = Math.sin(angle) * distance - 40;

piece.className = "confetti";
piece.style.setProperty("--confetti-color", pick(CONFETTI_COLORS));
piece.style.setProperty("--confetti-x", `${x}px`);
piece.style.setProperty("--confetti-y", `${y}px`);
piece.style.setProperty("--confetti-rotate", `${Math.random() * 180}deg`);
piece.style.animationDelay = `${Math.random() * 180}ms`;
piece.addEventListener("animationend", removeNode, { once: true });
return piece;
}

function showMilestone(total) {
if (total % MILESTONE_INTERVAL !== 0) return;

const milestone = document.createElement("div");
milestone.className = "milestone";
milestone.setAttribute("role", "status");
milestone.setAttribute("aria-label", `${total} trains dispatched`);
milestone.innerHTML = `
<div class="milestone-badge">
<span class="milestone-count">${total}</span>
<span class="milestone-label">trains dispatched</span>
<span class="milestone-track" aria-hidden="true"></span>
<span class="milestone-engine" aria-hidden="true">🚂</span>
</div>
`;

for (let i = 0; i < 24; i += 1) {
milestone.append(createConfettiPiece(i));
}

window.setTimeout(() => milestone.remove(), 2400);
dispatcher.append(milestone);
}

function dispatchTrain() {
const now = performance.now();
if (now - lastDispatch < DISPATCH_THROTTLE_MS) return;
Expand Down Expand Up @@ -390,6 +579,7 @@
count += 1;
hero.classList.add("dispatched");
updateCounter();
showMilestone(count);
playChoo();

for (let i = 0; i < PUFF_COUNT; i += 1) {
Expand Down