feat: add AtmospherePanel component with toggles and intensity sliders

client/src/components/AtmospherePanel.tsx

@@ -0,0 +1,141 @@
+import { useEffect, useRef, useState } from "react";
+import type { AtmosphereState } from "../lib/atmosphereTypes";
+import styles from "./AtmospherePanel.module.css";
+
+type EffectKey = keyof AtmosphereState;
+
+const EFFECTS: { key: EffectKey; emoji: string; label: string }[] = [
+  { key: "fog",    emoji: "🌫",  label: "Fog"    },
+  { key: "fire",   emoji: "🔥",  label: "Fire"   },
+  { key: "rain",   emoji: "🌧",  label: "Rain"   },
+  { key: "embers", emoji: "✨", label: "Embers" },
+];
+
+interface AtmospherePanelProps {
+  atmosphere: AtmosphereState;
+  onAtmosphereChange: (next: AtmosphereState) => void;
+}
+
+export default function AtmospherePanel({
+  atmosphere,
+  onAtmosphereChange,
+}: AtmospherePanelProps) {
+  const [open, setOpen] = useState(false);
+  // Local slider values so the label updates while dragging without triggering remounts
+  const [localIntensity, setLocalIntensity] = useState({
+    fog:    atmosphere.fog.intensity,
+    fire:   atmosphere.fire.intensity,
+    rain:   atmosphere.rain.intensity,
+    embers: atmosphere.embers.intensity,
+  });
+  const containerRef = useRef<HTMLDivElement>(null);
+
+  // Close panel on outside click
+  useEffect(() => {
+    if (!open) return;
+    function onMouseDown(e: MouseEvent) {
+      if (containerRef.current && !containerRef.current.contains(e.target as Node)) {
+        setOpen(false);
+      }
+    }
+    document.addEventListener("mousedown", onMouseDown);
+    return () => document.removeEventListener("mousedown", onMouseDown);
+  }, [open]);
+
+  // Sync local intensity when atmosphere changes from socket
+  useEffect(() => {
+    setLocalIntensity({
+      fog:    atmosphere.fog.intensity,
+      fire:   atmosphere.fire.intensity,
+      rain:   atmosphere.rain.intensity,
+      embers: atmosphere.embers.intensity,
+    });
+  }, [atmosphere]);
+
+  const activeEmojis = EFFECTS
+    .filter(({ key }) => atmosphere[key].active)
+    .map(({ emoji }) => emoji)
+    .join("");
+
+  function toggleEffect(key: EffectKey) {
+    onAtmosphereChange({
+      ...atmosphere,
+      [key]: { ...atmosphere[key], active: !atmosphere[key].active },
+    });
+  }
+
+  function handleSliderChange(key: EffectKey, value: number) {
+    // Update label only — no socket emit yet
+    setLocalIntensity((prev) => ({ ...prev, [key]: value }));
+  }
+
+  function handleSliderCommit(key: EffectKey, value: number) {
+    // Emit on mouse/touch release
+    onAtmosphereChange({
+      ...atmosphere,
+      [key]: { ...atmosphere[key], intensity: value },
+    });
+  }
+
+  return (
+    <div className={styles.container} ref={containerRef}>
+      <button
+        className={`${styles.trigger} ${activeEmojis ? styles.triggerActive : ""}`}
+        onClick={() => setOpen((o) => !o)}
+        title="Atmosphere effects"
+      >
+        {activeEmojis || "🌫"} ▾
+      </button>
+
+      {open && (
+        <div className={styles.panel}>
+          <div className={styles.panelTitle}>Atmosphere</div>
+          {EFFECTS.map(({ key, emoji, label }) => (
+            <div key={key} className={styles.effectRow}>
+              <div className={styles.effectTop}>
+                <span className={styles.effectLabel}>{emoji} {label}</span>
+                <button
+                  className={`${styles.toggle} ${atmosphere[key].active ? styles.toggleOn : ""}`}
+                  onClick={() => toggleEffect(key)}
+                  aria-label={`Toggle ${label}`}
+                />
+              </div>
+              <div
+                className={`${styles.intensityRow} ${
+                  atmosphere[key].active ? styles.intensityActive : ""
+                }`}
+              >
+                <span className={styles.intensityLabel}>
+                  {localIntensity[key]}%
+                </span>
+                <input
+                  type="range"
+                  min={0}
+                  max={100}
+                  value={localIntensity[key]}
+                  disabled={!atmosphere[key].active}
+                  className={styles.slider}
+                  onChange={(e) =>
+                    handleSliderChange(key, Number(e.target.value))
+                  }
+                  onMouseUp={(e) =>
+                    handleSliderCommit(
+                      key,
+                      Number((e.target as HTMLInputElement).value),
+                    )
+                  }
+                  onTouchEnd={(e) =>
+                    handleSliderCommit(
+                      key,
+                      Number((e.currentTarget as HTMLInputElement).value),
+                    )
+                  }
+                />
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}