feat(intro): polish loading transition

src/components/ui/SceneLoadingOverlay.tsx

@@ -1,5 +1,13 @@
 import type { SceneLoadingState } from "@/types/world/sceneLoading";
 
+const LOADING_BACKGROUND_PATH = "/assets/bg-site.png";
+const LOADING_LOGO_PATH = "/assets/logo/logo.jpg";
+
+for (const path of [LOADING_BACKGROUND_PATH, LOADING_LOGO_PATH]) {
+  const image = new Image();
+  image.src = path;
+}
+
 interface SceneLoadingOverlayProps {
   state: SceneLoadingState;
 }
@@ -15,11 +23,47 @@ export function SceneLoadingOverlay({
       className={`scene-loading-overlay${isReady ? " scene-loading-overlay--ready" : ""}`}
       aria-live="polite"
     >
-      <div className="scene-loading-overlay__content">
-        <strong>{state.currentStep}</strong>
+      <img
+        alt=""
+        className="scene-loading-overlay__background"
+        src={LOADING_BACKGROUND_PATH}
+      />
+      <div className="scene-loading-overlay__shade" />
+      <img
+        alt="La Fabrik Durable"
+        className="scene-loading-overlay__logo"
+        src={LOADING_LOGO_PATH}
+      />
+      <div className="scene-loading-overlay__footer">
+        <div className="scene-loading-overlay__meta">
+          <div className="scene-loading-overlay__label">
+            <span>Loading...</span>
+            <svg
+              className="scene-loading-overlay__spinner"
+              viewBox="0 0 32 32"
+              aria-hidden="true"
+            >
+              <path
+                d="M16 3a13 13 0 1 1-9.2 3.8"
+                fill="none"
+                stroke="currentColor"
+                strokeLinecap="round"
+                strokeWidth="3.5"
+              />
+              <path
+                d="M6.8 6.8V2.8H2.8"
+                fill="none"
+                stroke="currentColor"
+                strokeLinecap="round"
+                strokeLinejoin="round"
+                strokeWidth="3.5"
+              />
+            </svg>
+          </div>
+          <strong>{progress}%</strong>
+        </div>
         <div className="scene-loading-overlay__track">
           <span style={{ width: `${progress}%` }} />
-          <em>{progress}%</em>
         </div>
       </div>
     </div>

src/components/ui/intro/FadeToVideoOverlay.tsx

@@ -0,0 +1,14 @@
+export function FadeToVideoOverlay(): React.JSX.Element {
+  return (
+    <div
+      aria-hidden="true"
+      style={{
+        position: "fixed",
+        inset: 0,
+        zIndex: 29,
+        background: "#000",
+        pointerEvents: "none",
+      }}
+    />
+  );
+}

src/components/ui/intro/index.ts

@@ -1,3 +1,4 @@
+export { FadeToVideoOverlay } from "./FadeToVideoOverlay";
 export { IntroVideoPlayer } from "./IntroVideoPlayer";
 export { IntroDialogueOverlay } from "./IntroDialogueOverlay";
 export { IntroRevealOverlay } from "./IntroRevealOverlay";

src/data/game/gameStateConfig.ts

@@ -15,6 +15,7 @@ export const SITE_STEPS: readonly SiteStep[] = [
  */
 export const GAME_STEPS: readonly GameStep[] = [
   "loading-map",
+  "fade-to-video",
   "video",
   "dialogue-intro",
   "reveal",

src/index.css

@@ -873,72 +873,113 @@ canvas {
   position: fixed;
   inset: 0;
   z-index: 30;
-  display: grid;
-  place-items: center;
+  display: flex;
+  align-items: center;
+  justify-content: center;
   width: 100vw;
   height: 100vh;
-  background: #ffffff;
+  overflow: hidden;
+  background: #04070d;
   pointer-events: none;
   opacity: 1;
-  transition: opacity 640ms ease;
+  transition: opacity 500ms ease;
 }
 
 .scene-loading-overlay--ready {
   opacity: 0;
 }
 
-.scene-loading-overlay__content {
-  display: grid;
-  justify-items: center;
-  gap: 18px;
-  width: min(360px, calc(100vw - 48px));
-  padding: 28px;
-  background: rgba(255, 255, 255, 0.92);
-  border: 1px solid rgba(15, 23, 42, 0.08);
-  border-radius: 28px;
-  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.12);
+.scene-loading-overlay__background,
+.scene-loading-overlay__shade {
+  position: absolute;
+  inset: 0;
 }
 
-.scene-loading-overlay strong {
-  color: #1e293b;
-  font-size: 15px;
-  font-weight: 600;
-  letter-spacing: 0.02em;
-  line-height: 1.45;
-  text-align: center;
+.scene-loading-overlay__background {
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+}
+
+.scene-loading-overlay__shade {
+  background: rgba(4, 7, 13, 0.12);
+}
+
+.scene-loading-overlay__logo {
+  position: relative;
+  z-index: 1;
+  width: clamp(180px, 28vw, 320px);
+  max-height: min(38vh, 320px);
+  border-radius: 16px;
+  object-fit: cover;
+  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.28);
+}
+
+.scene-loading-overlay__footer {
+  position: absolute;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  z-index: 1;
+  display: grid;
+  gap: 12px;
+  padding: 0 clamp(18px, 4vw, 56px) clamp(22px, 5vh, 48px);
+}
+
+.scene-loading-overlay__meta {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 18px;
+  color: #ffffff;
+  font-family: "Nersans One", "Helvetica Neue", Helvetica, Arial, sans-serif;
+  font-size: clamp(16px, 2.3vw, 30px);
+  line-height: 1;
+  letter-spacing: 0.12em;
+  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.45);
   text-transform: uppercase;
 }
 
+.scene-loading-overlay__label {
+  display: flex;
+  align-items: center;
+  gap: clamp(8px, 1.2vw, 14px);
+  min-width: 0;
+}
+
+.scene-loading-overlay__spinner {
+  flex: 0 0 auto;
+  width: clamp(18px, 2.2vw, 30px);
+  height: clamp(18px, 2.2vw, 30px);
+  color: #ffffff;
+  animation: scene-loading-spin 900ms linear infinite;
+}
+
+.scene-loading-overlay__meta strong {
+  color: inherit;
+  font: inherit;
+}
+
 .scene-loading-overlay__track {
   position: relative;
   overflow: hidden;
   width: 100%;
-  height: 18px;
-  background: #e2e8f0;
-  border-radius: 999px;
-  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.04);
+  height: clamp(7px, 1vw, 12px);
+  background: rgba(255, 255, 255, 0.22);
+  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.22);
 }
 
 .scene-loading-overlay__track span {
   display: block;
   height: 100%;
-  background: linear-gradient(90deg, #2563eb, #38bdf8);
-  border-radius: inherit;
+  background: #3b82f6;
   transition: width 180ms ease;
 }
 
-.scene-loading-overlay__track em {
-  position: absolute;
-  inset: 0;
-  display: grid;
-  place-items: center;
-  color: #ffffff;
-  font-size: 11px;
-  font-style: normal;
-  font-weight: 700;
-  letter-spacing: 0.04em;
-  line-height: 1;
-  text-shadow: 0 1px 4px rgba(15, 23, 42, 0.35);
+@keyframes scene-loading-spin {
+  to {
+    transform: rotate(360deg);
+  }
 }
 
 /* Subtitles */

src/pages/page.tsx

@@ -6,12 +6,14 @@ import { DebugPerf } from "@/components/debug/DebugPerf";
 import { DialogMessage } from "@/components/ui/DialogMessage";
 import { GameUI } from "@/components/ui/GameUI";
 import {
+  FadeToVideoOverlay,
   IntroDialogueOverlay,
   IntroRevealOverlay,
   IntroVideoPlayer,
 } from "@/components/ui/intro";
 import { SceneLoadingOverlay } from "@/components/ui/SceneLoadingOverlay";
 import { INITIAL_SCENE_LOADING_STATE } from "@/data/world/sceneLoadingConfig";
+import { AudioManager } from "@/managers/AudioManager";
 import { useGameStore } from "@/managers/stores/useGameStore";
 import { HandTrackingProvider } from "@/providers/gameplay/HandTrackingProvider";
 import type { SceneLoadingState } from "@/types/world/sceneLoading";
@@ -19,6 +21,8 @@ import { hasSiteBeenVisitedToday } from "@/utils/cookies/siteVisitCookie";
 import { logger } from "@/utils/core/Logger";
 import { World } from "@/world/World";
 
+const LOADING_TO_VIDEO_FADE_MS = 500;
+
 export function HomePage(): React.JSX.Element | null {
   const navigate = useNavigate();
   const introStep = useGameStore((state) => state.intro.currentStep);
@@ -67,10 +71,23 @@ export function HomePage(): React.JSX.Element | null {
 
   useEffect(() => {
     if (introStep === "loading-map" && sceneLoadingState.status === "ready") {
-      setIntroStep("video");
+      AudioManager.getInstance().stopMusic();
+      setIntroStep("fade-to-video");
     }
   }, [introStep, sceneLoadingState.status, setIntroStep]);
 
+  useEffect(() => {
+    if (introStep !== "fade-to-video") return undefined;
+
+    const timeoutId = window.setTimeout(() => {
+      setIntroStep("video");
+    }, LOADING_TO_VIDEO_FADE_MS);
+
+    return () => {
+      window.clearTimeout(timeoutId);
+    };
+  }, [introStep, setIntroStep]);
+
   const handleCanvasCreated = useCallback(
     ({ gl }: { gl: THREE.WebGLRenderer }) => {
       const canvas = gl.domElement;
@@ -106,6 +123,8 @@ export function HomePage(): React.JSX.Element | null {
 
   const renderIntroOverlay = () => {
     switch (introStep) {
+      case "fade-to-video":
+        return <FadeToVideoOverlay />;
       case "video":
         return <IntroVideoPlayer />;
       case "dialogue-intro":
@@ -142,7 +161,7 @@ export function HomePage(): React.JSX.Element | null {
           onClose={hideDialog}
         />
       ) : null}
-      {introStep === "loading-map" && (
+      {(introStep === "loading-map" || introStep === "fade-to-video") && (
         <SceneLoadingOverlay state={sceneLoadingState} />
       )}
       {renderIntroOverlay()}

src/types/game.ts

@@ -15,6 +15,7 @@ export type SiteStep =
  */
 export type GameStep =
   | "loading-map" // Chargement des assets
+  | "fade-to-video" // Fondu noir entre chargement et vidéo
   | "video" // Vidéo intro.mp4
   | "dialogue-intro" // Dialogues post-vidéo (écran noir)
   | "reveal" // Fondu noir → jeu visible

src/utils/map/loadMapSceneData.ts

@@ -20,6 +20,7 @@ type ModelEntry = [modelName: string, modelUrl: string];
 
 let cachedSceneData: SceneData | null = null;
 let loadingPromise: Promise<SceneData | null> | null = null;
+const modelEntryCache = new Map<string, ModelEntry | null>();
 
 export async function loadMapSceneData(): Promise<SceneData | null> {
   if (cachedSceneData) {
@@ -223,24 +224,34 @@ async function loadMapModelUrls(
 }
 
 async function loadModelEntry(modelName: string): Promise<ModelEntry | null> {
-  for (const fileName of [...MODEL_FILE_NAMES, `${modelName}.gltf`]) {
-    const modelUrl = `/models/${modelName}/${fileName}`;
-
-    try {
-      const response = await fetch(modelUrl, { method: "HEAD" });
-      const contentType = response.headers.get("content-type") ?? "";
-      if (response.ok && !contentType.includes(HTML_CONTENT_TYPE)) {
-        return [modelName, modelUrl];
-      }
-    } catch (error) {
-      logger.warn("MapSceneData", "Failed to probe map model URL", {
-        modelName,
-        modelUrl,
-        error: error instanceof Error ? error : String(error),
-      });
-      continue;
-    }
+  if (modelEntryCache.has(modelName)) {
+    return modelEntryCache.get(modelName) ?? null;
   }
 
-  return null;
+  const modelUrls = [...MODEL_FILE_NAMES, `${modelName}.gltf`].map(
+    (fileName) => `/models/${modelName}/${fileName}`,
+  );
+
+  const results = await Promise.all(
+    modelUrls.map(async (modelUrl) => {
+      try {
+        const response = await fetch(modelUrl, { method: "HEAD" });
+        const contentType = response.headers.get("content-type") ?? "";
+        return response.ok && !contentType.includes(HTML_CONTENT_TYPE);
+      } catch (error) {
+        logger.warn("MapSceneData", "Failed to probe map model URL", {
+          modelName,
+          modelUrl,
+          error: error instanceof Error ? error : String(error),
+        });
+        return false;
+      }
+    }),
+  );
+
+  const modelUrl = modelUrls[results.findIndex(Boolean)] ?? null;
+  const entry = modelUrl ? ([modelName, modelUrl] satisfies ModelEntry) : null;
+
+  modelEntryCache.set(modelName, entry);
+  return entry;
 }

src/world/GameMusic.tsx

@@ -1,7 +1,7 @@
 import { useEffect } from "react";
 import { AudioManager } from "@/managers/AudioManager";
 
-const GAME_MUSIC_PATH = "/sounds/musique/test.mp3";
+const GAME_MUSIC_PATH = "/sounds/musique/musique-jeu.mp3";
 const GAME_MUSIC_VOLUME = 0.33;
 
 export function GameMusic(): null {