src/App.svelte

@@ -3,6 +3,7 @@
   import { fetchDialogSet } from "./utils";
   import Debugger from "./Debugger.svelte";
   import type { Dialog } from "./types";
+  import SavingComponent from "./SavingComponent.svelte";
 
   const dialogSetPromise = fetchDialogSet();
   let currentDialog: Dialog;
@@ -10,10 +11,13 @@
 
 <main>
   {#await dialogSetPromise then dialogSet}
+    <SavingComponent />
+    <br />
     <DialogSetComponent bind:currentDialog {...dialogSet} />
-
     <br />
-    <Debugger {dialogSet} bind:currentDialog />
+    {#if window.location.hostname.includes("localhost")}
+      <Debugger {dialogSet} bind:currentDialog />
+    {/if}
   {:catch _error}
     <h3>Oh no :(</h3>
     <p>

src/Debugger.svelte

 <script lang="ts">
   import {
-    gameFactsStore,
+    gameFacts,
     addGameFactToFactArray,
     toggleFactInFactArray,
-  } from "./gameFacts";
+  } from "./gameStateStore";
   import type { Dialog, DialogMap, DialogSet } from "./types";
   import { findDialogSetProblems } from "./utils";
 
   export let currentDialog: Dialog;
   export let dialogSet: DialogSet;
   $: dialogNames = Object.keys(dialogSet.dialogs);
-  export let selectedDialogName: string;
+  let selectedDialogName: string;
 
   /**
    * Collect all facts referenced in these dialogs
@@ -32,7 +32,7 @@
   }
 
   let seenFactIds = new Set<String>([
-    ...$gameFactsStore,
+    ...$gameFacts,
     ...getDialogFacts(dialogSet.dialogs),
   ]);
   $: seenFactIdsArray = Array.from(seenFactIds);
@@ -41,63 +41,59 @@
 
 <div>
   <details>
-      <summary>Show debug tools</summary>
-      <h3>Dialog-Debugger</h3>
-  Jump to dialog:
-  <!-- svelte-ignore a11y-no-onchange -->
-  <select
-    bind:value={selectedDialogName}
-    on:change={() => (currentDialog = dialogSet.dialogs[selectedDialogName])}
-  >
-    {#each dialogNames as dialogName}
-      <option value={dialogName} selected={dialogName === selectedDialogName}>
-        {dialogName}
-      </option>
-    {/each}
-  </select>
-  <br />
-  <ol>
-    {#each findDialogSetProblems(dialogSet) as { sourceDialog, text }}
-      <li>
-        {sourceDialog}: <code style="color: orange">{text}</code>
-      </li>
-    {/each}
-  </ol>
+    <summary>Show debug tools</summary>
+    <h3>Dialog-Debugger</h3>
+    Jump to dialog:
+    <!-- svelte-ignore a11y-no-onchange -->
+    <select
+      bind:value={selectedDialogName}
+      on:change={() => (currentDialog = dialogSet.dialogs[selectedDialogName])}
+    >
+      {#each dialogNames as dialogName}
+        <option value={dialogName} selected={dialogName === selectedDialogName}>
+          {dialogName}
+        </option>
+      {/each}
+    </select>
+    <br />
+    <ol>
+      {#each findDialogSetProblems(dialogSet) as { sourceDialog, text }}
+        <li>
+          {sourceDialog}: <code style="color: orange">{text}</code>
+        </li>
+      {/each}
+    </ol>
 
-  <hr />
+    <hr />
 
-  <h3>Quest-Debugger</h3>
-  <b>GameFacts:</b>
-  <ul>
-    {#each seenFactIdsArray as gameFact}
-      <li>
-        <input
-          type="checkbox"
-          checked={$gameFactsStore.includes(gameFact)}
-          on:change={() =>
-            gameFactsStore.set(
-              toggleFactInFactArray(gameFact, $gameFactsStore)
-            )}
-        />
-        {gameFact}
-      </li>
-    {/each}
-  </ul>
-  Add fact:
-  <input type="text" bind:value={addFactInputValue} />
-  <button
-    style="width: 3rem;"
-    on:click={() => {
-      gameFactsStore.set(
-        addGameFactToFactArray(addFactInputValue, $gameFactsStore)
-      );
-      seenFactIds = seenFactIds.add(addFactInputValue);
-      addFactInputValue = "";
-    }}>Add</button
-  >
-  <button style="width: 13rem;" on:click={() => gameFactsStore.set([])}
-    >Reset facts</button
-  >
+    <h3>Quest-Debugger</h3>
+    <b>GameFacts:</b>
+    <ul>
+      {#each seenFactIdsArray as gameFact}
+        <li>
+          <input
+            type="checkbox"
+            checked={$gameFacts.includes(gameFact)}
+            on:change={() =>
+              gameFacts.set(toggleFactInFactArray(gameFact, $gameFacts))}
+          />
+          {gameFact}
+        </li>
+      {/each}
+    </ul>
+    Add fact:
+    <input type="text" bind:value={addFactInputValue} />
+    <button
+      style="width: 3rem;"
+      on:click={() => {
+        gameFacts.set(addGameFactToFactArray(addFactInputValue, $gameFacts));
+        seenFactIds = seenFactIds.add(addFactInputValue);
+        addFactInputValue = "";
+      }}>Add</button
+    >
+    <button style="width: 13rem;" on:click={() => gameFacts.set([])}
+      >Reset facts</button
+    >
   </details>
 </div>
 

src/SavingComponent.svelte

+<script lang="ts">
+  import { gameStateId, syncConnected, setupSyncing } from "./gameStateStore";
+
+  async function handleSyncState(): Promise<void> {
+    const success = await setupSyncing();
+    if (!success) {
+      alert(
+        "Herrgott, wie schwer kann es sein, eine gültige ID einzugeben? Nochmal!"
+      );
+    }
+  }
+</script>
+
+{#if !$syncConnected}
+  <div>
+    <p>
+      Dein Spielstand wird aktuell noch nicht synchronisiert, d.h. wenn du den
+      Browser schließt, kann es sein, dass du von vorne anfängst. Zum Speichern
+      gib bitte deine Bestellnummer ein. Deine Bestellnummer findest du in den
+      E-Mails, die wir dir zur O-Phase gesendet haben.
+    </p>
+    <br />
+    <input
+      type="text"
+      placeholder="Bsp: A1B2C3"
+      maxlength="5"
+      minlength="5"
+      bind:value={$gameStateId}
+    />
+    <button style="width: 20rem;" on:click|preventDefault={handleSyncState}>
+      Spielstand synchronisieren
+    </button>
+  </div>
+{/if}
+
+<style>
+  div {
+    border: 1px solid;
+    padding: 10px;
+    padding-bottom: 0px;
+    margin: 5px;
+  }
+</style>

src/SingleDialogComponent.svelte

 <script lang="ts">
   import type { DialogOption } from "./types";
   import { createEventDispatcher } from "svelte";
-  import { gameFactsStore, addGameFactToFactArray } from "./gameFacts";
+  import { gameFacts, addGameFactToFactArray } from "./gameStateStore";
   import Typewriter from "svelte-typewriter";
 
   const dispatch = createEventDispatcher();
 
   export let imageUrl: string;
+  export let peertubeVideoId: string | undefined;
   export let title: string | undefined;
   export let text: string;
   export let options: DialogOption[] = [];
   $: usableOptions = options.filter((option) =>
-    isDialogOptionAllowedByGameFacts(option, $gameFactsStore)
+    isDialogOptionAllowedByGameFacts(option, $gameFacts)
   );
   export let addFacts: String[] = [];
   $: {
     if (Array.isArray(addFacts)) {
       const gameFactsAfterAddedFacts = addFacts.reduce(
         (accFacts, factToAdd) => addGameFactToFactArray(factToAdd, accFacts),
-        $gameFactsStore
+        $gameFacts
       );
-      $gameFactsStore = gameFactsAfterAddedFacts;
+      $gameFacts = gameFactsAfterAddedFacts;
     }
   }
   export let removeFacts: String[] = [];
@@ -28,9 +29,9 @@
     if (Array.isArray(removeFacts)) {
       const gameFactsAfterRemovedFacts = removeFacts.reduce(
         (accFacts, factToRemove) => accFacts.filter((f) => f !== factToRemove),
-        $gameFactsStore
+        $gameFacts
       );
-      $gameFactsStore = gameFactsAfterRemovedFacts;
+      $gameFacts = gameFactsAfterRemovedFacts;
     }
   }
 
@@ -72,15 +73,27 @@
   </h3>
 {/if}
 
+<!-- svelte-ignore a11y-missing-attribute -->
 <img src={imageUrl} />
+{#if typeof peertubeVideoId === "string" && peertubeVideoId.length > 0}
+  <iframe
+    title="Embedded video"
+    height="400"
+    sandbox="allow-same-origin allow-scripts allow-popups"
+    src="https://video.oh14.de/videos/embed/{peertubeVideoId}?autoplay=1&title=0&warningTitle=0&peertubeLink=0"
+    frameborder="0"
+  />
+{/if}
+{#if typeof text === "string" && text.length > 0}
+  <div>
+    <Typewriter cascade interval={10} cursor={false}>
+      {#each text.split("\n") as para}
+        <p>{para}</p>
+      {/each}
+    </Typewriter>
+  </div>
+{/if}
 
-<div>
-  <Typewriter cascade interval={10} cursor={false}>
-    {#each text.split("\n") as para}
-      <p>{para}</p>
-    {/each}
-  </Typewriter>
-</div>
 <hr />
 <div>
   {#each usableOptions as option}

src/dialogSet.schema.json

@@ -18,6 +18,10 @@
           },
           "type": "array"
         },
+        "peertubeVideoId": {
+          "description": "Embeds a peerTube-Video into this dialog and plays it when the dialog is opened.",
+          "type": "string"
+        },
         "imageUrl": {
           "description": "Can be used to overwrite imageUrl from DialogSet.\nE.g. when a different emotion should be shown for this dialog,",
           "type": "string"

src/gameFacts.ts

-import { writable } from "svelte-local-storage-store";
-import type { Writable } from "svelte/store";
-
-export const gameFactsStore: Writable<String[]> = writable("gameFacts", []);
-
-export function addGameFactToFactArray(
-  gameFact: String,
-  factArray: String[]
-): String[] {
-  if (!factArray.includes(gameFact)) {
-    return [...factArray, gameFact];
-  } else {
-    return factArray;
-  }
-}
-
-export function toggleFactInFactArray(
-  gameFact: String,
-  factArray: String[]
-): String[] {
-  if (!factArray.includes(gameFact)) {
-    return [...factArray, gameFact];
-  } else {
-    return factArray.filter((f) => f !== gameFact);
-  }
-}

src/gameStateServerClient.ts

+import { GameState, isValidGameState } from "./types";
+
+export class GameStateServerClient {
+  _apiBaseUrl: string;
+  constructor(apiBaseUrl: string) {
+    this._apiBaseUrl = apiBaseUrl;
+  }
+
+  async saveState(id: string, gameState: GameState): Promise<boolean> {
+    try {
+      await fetch(this._apiBaseUrl + "/game/state/" + id, {
+        method: "POST",
+        mode: "cors",
+        cache: "no-cache",
+        credentials: "omit",
+        headers: {
+          "Content-Type": "application/json",
+        },
+        referrerPolicy: "no-referrer",
+        body: JSON.stringify(gameState),
+      });
+      return true;
+    } catch (saveStateToServerError) {
+      console.error(
+        "Failed to save state to server. The following info may help to solve this problem:",
+        saveStateToServerError
+      );
+      return false;
+    }
+  }
+
+  async loadState(id: string): Promise<GameState | null> {
+    try {
+      const rawResponse = await fetch(this._apiBaseUrl + "/game/state/" + id, {
+        method: "GET",
+        mode: "cors",
+        cache: "no-cache",
+        credentials: "omit",
+        referrerPolicy: "no-referrer",
+      });
+      if (rawResponse.status === 400) {
+        return null;
+      }
+      const decodedResponse = await rawResponse.json();
+      if (!isValidGameState(decodedResponse)) {
+        throw new TypeError("State from server is not a valid gameState");
+      }
+      return decodedResponse;
+    } catch (loadGameStateFromServerError) {}
+  }
+}

src/gameStateStore.ts

+import { writable } from "svelte-local-storage-store";
+import debounce from "lodash.debounce";
+import type { Writable } from "svelte/store";
+import { GameStateServerClient } from "./gameStateServerClient";
+import type { GameState } from "./types";
+
+export const gameFacts: Writable<String[]> = writable("gameFacts", []);
+const currentGameState: GameState = {
+  gameFacts: [],
+};
+//  Update currentGameState whenever gameFacts change
+gameFacts.subscribe((newValue) => (currentGameState.gameFacts = [...newValue]));
+
+let currentGameStateId = "";
+export const gameStateId: Writable<string> = writable(
+  "gameStateId",
+  currentGameStateId
+);
+gameStateId.subscribe((newValue) => (currentGameStateId = newValue));
+export const syncServerBaseUrl = "https://state.world.oh14.de";
+
+let isSyncConnected = false;
+export const syncConnected: Writable<boolean> = writable(
+  "syncConnected",
+  isSyncConnected
+);
+const syncClient: GameStateServerClient = new GameStateServerClient(
+  syncServerBaseUrl
+);
+
+// Try to sync currentGameState whenever gameFacts change
+gameFacts.subscribe(
+  debounce(
+    async () => {
+      if (isSyncConnected) {
+        await syncClient.saveState(currentGameStateId, currentGameState);
+        try {
+        } catch (error) {
+          // Failed to save state on update via store
+        }
+      }
+    },
+    500,
+    { leading: true }
+  )
+);
+
+export async function setupSyncing(): Promise<boolean> {
+  try {
+    const syncedGameState = await syncClient.loadState(currentGameStateId);
+    if (syncedGameState == null) {
+      // No save game found yet, but id allowed
+      isSyncConnected = true;
+      syncConnected.set(true);
+    } else if (syncedGameState) {
+      gameFacts.set(syncedGameState.gameFacts);
+      isSyncConnected = true;
+      syncConnected.set(true);
+    }
+    return true;
+  } catch (error) {
+    return false;
+  }
+}
+
+export function addGameFactToFactArray(
+  gameFact: String,
+  factArray: String[]
+): String[] {
+  if (!factArray.includes(gameFact)) {
+    return [...factArray, gameFact];
+  } else {
+    return factArray;
+  }
+}
+
+export function toggleFactInFactArray(
+  gameFact: String,
+  factArray: String[]
+): String[] {
+  if (!factArray.includes(gameFact)) {
+    return [...factArray, gameFact];
+  } else {
+    return factArray.filter((f) => f !== gameFact);
+  }
+}

src/types.ts

@@ -45,6 +45,11 @@ export interface Dialog {
    * E.g. when a different emotion should be shown for this dialog,
    */
   imageUrl?: string;
+
+  /**
+   * Embeds a peerTube-Video into this dialog and plays it.
+   */
+  peertubeVideoId?: string;
   /**
    * What the characters says to the player.
    * Line breaks (\n) are rendered as paragraphs.
@@ -97,3 +102,16 @@ export interface DialogOption {
    */
   forbiddenFacts?: String[];
 }
+
+export interface GameState {
+  gameFacts: String[];
+}
+
+export function isValidGameState(input: unknown): input is GameState {
+  if (typeof input !== "object") return false;
+  return (
+    input["gameFacts"] !== undefined &&
+    Array.isArray(input["gameFacts"]) &&
+    input["gameFacts"].every((gameFact) => typeof gameFact === "string")
+  );
+}

src/utils.ts

@@ -18,7 +18,7 @@ function isValidDialogSetName(input: unknown) {
   return !/[^a-zA-Z0-9\-\_]/i.test(input);
 }
 
-function getParamValue(paramName: string): string | null {
+export function getParamValue(paramName: string): string | null {
   return new URLSearchParams(window.location.search).get(paramName);
 }