2 files changed, 214 insertions, 7 deletions
diff --git a/static/main.js b/static/main.js
index 144254f..183b117 100644
--- a/static/main.js
+++ b/static/main.js
@@ -6,10 +6,10 @@ function getContext() {
   return _context;
 }
 
-function loadSample(url) {
-  return fetch(url)
-    .then((response) => response.arrayBuffer())
-    .then((buffer) => getContext().decodeAudioData(buffer));
+async function loadSample(url) {
+  const res = await fetch(url);
+  const buffer = res.arrayBuffer();
+  return getContext().decodeAudioData(buffer);
 }
 
 function playSoundSample(sample, sampleNote, noteToPlay) {
@@ -20,3 +20,56 @@ function playSoundSample(sample, sampleNote, noteToPlay) {
   source.connect(ctx.destination);
   source.start(0);
 }
+
+function sigmoid(x) {
+  return 1 / (1 + Math.exp(-x));
+}
+
+function drawNoteLines(canvas) {
+  const ctx = canvas.getContext("2d");
+
+  let clicks = [];
+
+  function render() {
+    const W = 256;
+    const H = 512;
+    ctx.clearRect(0, 0, W, H);
+
+    const L = 1.0;
+    ctx.lineWidth = L;
+    ctx.strokeStyle = "#ccc";
+
+    for (let note = 0; note <= 12; note++) {
+      ctx.beginPath();
+      const y = (note / 12) * (H - L) + L / 2;
+      ctx.moveTo(0, y);
+      ctx.lineTo(W, y);
+      ctx.stroke();
+    }
+
+    let now = Date.now();
+    const R = 10.0;
+    for (const [x, y, t] of clicks) {
+      ctx.beginPath();
+      ctx.arc(x - R, y - R, 10, 0, 2 * Math.PI);
+      const tt = (now - t) / 1000; // [0, 1]
+      const alpha = sigmoid(5 - 10 * tt);
+      ctx.fillStyle = `rgb(0, 99, 228, ${alpha})`;
+      ctx.fill();
+    }
+
+    clicks = clicks.filter((o) => now < o[2] + 1_000);
+    if (clicks.length > 0) {
+      requestAnimationFrame(render);
+    }
+  }
+  render();
+
+  canvas.addEventListener("mousedown", (e) => {
+    const { layerX, layerY } = e;
+    clicks.push([layerX, layerY, Date.now()]);
+    render();
+  });
+}
+
+window.drawNoteLines = drawNoteLines;
diff --git a/static/style.css b/static/style.css
index 3b9ba9d..3dac7a4 100644
--- a/static/style.css
+++ b/static/style.css
@@ -1,18 +1,172 @@
+@import url("https://fonts.googleapis.com/css2?family=Chakra+Petch:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400;1,500;1,600;1,700&display=swap");
+
 :root {
+    font-family: "Chakra Petch", serif;
+}
+
+* {
+    font-family: "Chakra Petch", serif;
+    padding: 0;
+    margin: 0;
 }
 
 body {
+    background: hsl(214 100% 44.7%);
+    color: white;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+}
+
+h1 {
+    font-size: 48px;
+    text-align: center;
+}
+
+button {
+    background: hsl(214 100% 100%);
+    color: hsl(214 100% 15%);
+    padding: 12px 24px;
+    border: none;
+    border-radius: 4px;
+    font-size: 16px;
+
+    &:hover {
+        background: hsl(214 100% 95%);
+        cursor: pointer;
+    }
+}
+
+form {
+    display: flex;
+    flex-direction: row;
+    gap: 10px;
+}
+
+input:not([type]) {
+    padding: 4px 8px;
+    border: none;
+    border-radius: 4px;
+    font-size: 16px;
+
+    &:focus {
+        outline: none;
+    }
+}
+
+input[type="submit"] {
+    background: white;
+    padding: 4px 8px;
+    border: none;
+    border-radius: 4px;
+    font-size: 16px;
+
+    &:hover {
+        background: #f0f0f0;
+        cursor: pointer;
+    }
+}
+
+body > section {
+    padding: 48px 24px;
+    display: flex;
+    flex-direction: column;
+    gap: 10px;
+
+    align-items: center;
+}
+
+canvas {
+    background: white;
+    box-shadow: 0 0 10px 4px #00000080;
+    padding: 10px;
+    border-radius: 5px;
+}
+
+footer {
+    border-top: 1px solid #00000020;
+    padding: 24px;
+    text-align: center;
+}
+
+a {
+    color: #e1edfe;
+    &:visited {
+        color: #e1edfe;
+    }
+}
+
+.main-page {
+    min-width: 30rem;
+    max-width: 50vw;
+}
+
+.games-list {
+    list-style: none;
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+
+    padding-bottom: 24px;
+
+    li {
+        display: flex;
+        a {
+            flex: 1;
+            border-radius: 20px;
+            padding: 4px 16px;
+            background: #ffffff;
+            text-decoration: none;
+            &:hover {
+                background: #f0f8ff;
+            }
+            color: #333;
+            &:visited {
+                color: #333;
+            }
+        }
+    }
+}
+
+.leaderboard {
+    font-size: 20px;
+    li {
+        margin-left: 20px;
+    }
+    padding-bottom: 36px;
 }
 
 #guesslist {
     list-style: none;
+    display: flex;
+    flex-direction: row;
+    gap: 10px;
+    min-width: 50vw;
+    flex-wrap: wrap;
+
+    li {
+        border-radius: 4px;
+        padding: 4px 8px;
+
+        background: white;
+        color: black;
+    }
+
     [data-accept="none"] {
-        background: #aaa;
+        &::before {
+            content: "❓ ";
+        }
     }
     [data-accept="true"] {
-        background: #00ff00;
+        background: #d9ffd9;
+        &::before {
+            content: "✅ ";
+        }
     }
     [data-accept="false"] {
-        background: #ff0000;
+        background: #ffc0c0;
+        &::before {
+            content: "❌ ";
+        }
     }
 }