it works again

dev/ItemList.tsx

@@ -19,17 +19,19 @@ import {
 
 export type ListItem = { label: string; isActive: boolean };
 
-export type ItemHandler = (list: Array<ListItem>, index: number) => void;
+export type ItemsRef = Array<{ item: ListItem; index: number }>;
+
+export type ItemHandler = (items: ItemsRef) => void;
 
 export type Direction = "default" | "asc" | "desc";
 
-export function mapActiveItem(
+function mapActiveItem(items: ItemsRef, index: number): ItemsRef {
-	items: Array<ListItem>,
+	return items.map((ref, idx) => ({
-	index: number,
+		item: {
-): Array<ListItem> {
+			...ref.item,
-	return items.map((item, idx) => ({
-		...item,
 			isActive: idx === index,
+		},
+		index: ref.index,
 	}));
 }
 
@@ -65,31 +67,44 @@ function useDirection(
 	];
 }
 
+function createItemsRef(items: Array<ListItem>): ItemsRef {
+	return items.map((item, index) => ({
+		item,
+		index,
+	}));
+}
+
 export const ItemList: Component<{
 	name: string;
-	items: Accessor<Array<ListItem>>;
+	items: Accessor<string[]>;
 	handler: ItemHandler;
 }> = (props) => {
 	const [showList, setShowList] = createSignal(true);
-	const [items, setItems] = createSignal([...props.items()]);
+	const [items, setItems] = createSignal(
+		createItemsRef(props.items().map((i) => ({ label: i, isActive: false }))),
+	);
 	const [direction, toggleDirection] = useDirection(
 		createSignal<Direction>("default"),
 	);
 
 	createEffect(() => {
-		sortItems(props.items(), direction());
+		sortItems(
+			createItemsRef(props.items().map((i) => ({ label: i, isActive: false }))),
+			direction(),
+		);
 	});
 
-	const sortItems = (items: Array<ListItem>, direction: Direction) => {
+	const sortItems = (items: ItemsRef, direction: Direction) => {
+		const newItems = [...items];
 		if (direction === "default") {
-			setItems([...props.items()]);
+			newItems.sort((a, b) => a.index - b.index);
+			setItems(newItems);
 			return;
 		}
 
-		const newItems = [...items];
 		newItems.sort((a, b) => {
-			const labelA = a.label.toLocaleLowerCase();
+			const labelA = a.item.label.toLocaleLowerCase();
-			const labelB = b.label.toLocaleLowerCase();
+			const labelB = b.item.label.toLocaleLowerCase();
 
 			if (labelA < labelB) {
 				return direction === "asc" ? -1 : 1;
@@ -101,7 +116,6 @@ export const ItemList: Component<{
 
 			return 0;
 		});
-
 		setItems(newItems);
 	};
 
@@ -140,17 +154,19 @@ export const ItemList: Component<{
 			<Show when={showList()}>
 				<ul>
 					<For each={items()}>
-						{(item, index) => {
+						{(ref, index) => {
 							return (
 								<li
 									classList={{
-										active: item.isActive,
+										active: ref.item.isActive,
 									}}
 									onClick={() => {
-										props.handler(items(), index());
+										const newItems = mapActiveItem(items(), index());
+										setItems(newItems);
+										props.handler(newItems);
 									}}
 								>
-									{item.label}
+									{ref.item.label}
 								</li>
 							);
 						}}

dev/main.tsx

@@ -3,7 +3,7 @@ import { type Component, createSignal, onMount } from "solid-js";
 import { render } from "solid-js/web";
 import { InputField } from "#/dev/controls/InputField.tsx";
 import { RangeSlider } from "#/dev/controls/RangeSlider.tsx";
-import { ItemList, type ListItem, mapActiveItem } from "#/dev/ItemList.tsx";
+import { ItemList, type ItemsRef } from "#/dev/ItemList.tsx";
 import {
 	ArrowAutofitHeightIcon,
 	ArrowAutofitWidthIcon,
@@ -13,27 +13,15 @@ import {
 import { currentScene, loadScene, type SceneData } from "#/engine/Scene.ts";
 import { setScale, viewport } from "#/engine/Viewport.ts";
 
-async function fetchScenes(): Promise<Array<ListItem>> {
+async function fetchScenes(): Promise<string[]> {
 	const indexRef: string[] = await (await fetch(`/api/scenes`)).json();
 	const items = indexRef.filter((value) => value.includes("index"));
 
-	return items.map((value) => {
+	return items.map((i) => i.substring(1).split("/")[0]);
-		const [label] = value.substring(1).split("/");
-		return { label, isActive: false };
-	});
 }
 
-function mapSceneEntities(sceneData: SceneData): Array<ListItem> {
+function mapSceneEntities(sceneData: SceneData): string[] {
-	const sets: Record<string, number> = {};
+	return sceneData.entities.map((entity) => entity.name);
-	return sceneData.entities.map((entity, index) => {
-		sets[entity.name] =
-			sets[entity.name] === undefined ? 0 : sets[entity.name] + 1;
-		return {
-			label: entity.name,
-			isActive: false,
-			index,
-		};
-	});
 }
 
 function adjustGameContainer(gameContainer: HTMLElement, width: number): void {
@@ -65,45 +53,30 @@ const DevTools: Component<{ gameContainer: HTMLElement }> = ({
 
 	adjustGameContainer(gameContainer, width());
 
-	const [scenes, setScenes] = createSignal(
+	const [scenes] = createSignal(scenesRaw);
-		scenesRaw.map((scene) => ({
-			...scene,
-			isActive: scene.label === currentScene.data.name,
-		})),
-	);
 	const [entities, setEntities] = createSignal(
 		mapSceneEntities(currentScene.data),
 	);
 
-	const setCurrentScene = async (
+	const setCurrentScene = async (items: ItemsRef): Promise<void> => {
-		items: Array<ListItem>,
+		const name = items.find((ref) => ref.item.isActive)!.item.label;
-		index: number,
+		await loadScene(name);
-	): Promise<void> => {
-		setScenes(mapActiveItem(items, index));
-
-		await loadScene(items[index].label);
 		setEntities(mapSceneEntities(currentScene.data));
 	};
 
-	const setActiveEntity = (items: Array<ListItem>, index: number): void => {
+	const setActiveEntity = (items: ItemsRef): void => {
-		const entities = mapActiveItem(items, index);
+		const activeRef = items.find((ref) => ref.item.isActive)!;
-		setEntities(entities);
+		const instances = currentScene.entityInstanceMap.get(
+			activeRef.item.label,
+		)!.instances;
 
-		const entityName = items[index].label;
+		const entityRefs = items.filter(
-		const instances = currentScene.entityInstanceMap.get(entityName)!.instances;
+			(ref) => ref.item.label === activeRef.item.label,
+		);
+		const instance =
+			instances[entityRefs.findIndex((ref) => ref.item.isActive)];
 
-		let instanceIndex = 0;
+		console.log(instance.position);
-		let indexCount = 0;
-		for (const item of entities) {
-			if (item.label === entityName) {
-				if (item.isActive) {
-					instanceIndex = indexCount;
-				}
-				indexCount += 1;
-			}
-		}
-
-		console.log(instances[instanceIndex].position);
 	};
 
 	onMount(() => {