fix

Author: おんJ民

src/lib/anime.ts

@@ -29,12 +29,14 @@ export const init = (
 	layersByI.clear();
 	canvasByI.clear();
 	dataURLByI.clear();
+	activatedByI.clear();
 };
 
 export const iByWay = new Map<Way, number>();
 export const layersByI = new Map<number, oekaki.LayeredCanvas[]>();
 export const canvasByI = new Map<number, HTMLCanvasElement>();
 export const dataURLByI = new Map<number, string>();
+export const activatedByI = new Map<number, oekaki.LayeredCanvas>();
 
 type Way = {
 	key: string;

src/lib/components/CharaChipPanelPart.svelte

@@ -29,13 +29,24 @@
 		const now = anime.layersByI.get($activeIndex);
 		if (now) {
 			oekaki.setLayers(now);
-			activeLayer = now[now.length - 1];
 		} else {
 			oekaki.setLayers([]);
 			activeLayer = new oekaki.LayeredCanvas("レイヤー #1");
 		}
 	});
 
+	// キャラチップ切り替え時に元のレイヤーを選び直す実装
+	// TODO: レイヤーが1枚しかないときの新規レイヤー追加時にバグあり
+	$effect(() => {
+		const activatedLayer = anime.activatedByI.get($activeIndex);
+		if (!activatedLayer || $activeIndex === prevIndex) {
+			anime.activatedByI.set($activeIndex, activeLayer);
+		} else {
+			activeLayer = activatedLayer;
+			prevIndex = $activeIndex;
+		}
+	});
+
 	let pointerupTimestampAfter = $state(0);
 	$effect(() => {
 		if (!initTimestamp || !pointerupTimestamp) return;