fix(world): warm up map shadows from environment

src/hooks/world/useWorldSceneLoading.ts

@@ -11,10 +11,13 @@ interface UseWorldSceneLoadingOptions {
 interface UseWorldSceneLoadingResult {
   octree: Octree | null;
   gameplayReady: boolean;
+  shouldWarmUpShadows: boolean;
   showGameStage: boolean;
   handleGameStageLoaded: () => void;
   handleGameMapLoaded: () => void;
   handleOctreeReady: (octree: Octree) => void;
+  handleShadowWarmupReady: () => void;
+  handleShadowWarmupStarted: () => void;
 }
 
 export function useWorldSceneLoading({
@@ -24,13 +27,19 @@ export function useWorldSceneLoading({
   const [octree, setOctree] = useState<Octree | null>(null);
   const [gameMapLoaded, setGameMapLoaded] = useState(false);
   const [gameStageLoaded, setGameStageLoaded] = useState(false);
+  const [shadowsReady, setShadowsReady] = useState(false);
   const showGameStage = sceneMode === "game" && gameMapLoaded;
-  const gameplayReady = showGameStage && gameStageLoaded && octree !== null;
+  const gameSceneReadyForShadows =
+    showGameStage && gameStageLoaded && octree !== null;
+  const shadowWarmupReady = sceneMode === "game" && gameSceneReadyForShadows;
+  const shouldWarmUpShadows = shadowWarmupReady && !shadowsReady;
+  const gameplayReady = gameSceneReadyForShadows && shadowsReady;
   const sceneReady =
     (sceneMode === "game" && gameplayReady) ||
     (sceneMode === "physics" && octree !== null);
 
   const handleGameMapLoaded = useCallback(() => {
+    setShadowsReady(false);
     setGameMapLoaded(true);
   }, []);
 
@@ -45,6 +54,7 @@ export function useWorldSceneLoading({
 
   const handleOctreeReady = useCallback(
     (nextOctree: Octree) => {
+      setShadowsReady(false);
       setOctree(nextOctree);
       onLoadingStateChange?.({
         currentStep: "Collision prête",
@@ -55,6 +65,23 @@ export function useWorldSceneLoading({
     [onLoadingStateChange],
   );
 
+  const handleShadowWarmupStarted = useCallback(() => {
+    onLoadingStateChange?.({
+      currentStep: "Activation des ombres",
+      progress: 0.97,
+      status: "loading",
+    });
+  }, [onLoadingStateChange]);
+
+  const handleShadowWarmupReady = useCallback(() => {
+    setShadowsReady(true);
+    onLoadingStateChange?.({
+      currentStep: "Ombres prêtes",
+      progress: 0.99,
+      status: "loading",
+    });
+  }, [onLoadingStateChange]);
+
   useEffect(() => {
     onLoadingStateChange?.({
       currentStep: "Initialisation du jeu",
@@ -88,9 +115,12 @@ export function useWorldSceneLoading({
   return {
     octree,
     gameplayReady,
+    shouldWarmUpShadows,
     showGameStage,
     handleGameStageLoaded,
     handleGameMapLoaded,
     handleOctreeReady,
+    handleShadowWarmupReady,
+    handleShadowWarmupStarted,
   };
 }