Add support for main menu & classes creation

src/commands/switch_game_state.js

@@ -3,7 +3,7 @@ import { client_chat_msg, Formats } from '../core/chat.js'
 import { write_error } from './commands.js'
 import { literal } from './declare_options.js'
 
-const GameStates = ['GAME_ALIVE', 'GAME_GHOST']
+const GameStates = ['GAME_ALIVE', 'GAME_GHOST', 'MAIN_MENU']
 
 export const switch_game_state_nodes = [
   literal({

src/core/attribute.js

@@ -61,3 +61,26 @@ export function send_movement_speed(client, speed) {
     ],
   })
 }
+
+function abilities_flags({
+  invulnerable = false,
+  flying = false,
+  allow_flying = false,
+  creative_mode = false,
+}) {
+  return (
+    (invulnerable ? 0x01 : 0) |
+    (flying ? 0x02 : 0) |
+    (allow_flying ? 0x04 : 0) |
+    (creative_mode ? 0x08 : 0)
+  )
+}
+
+export function set_flying(client, flying) {
+  log.info({ flying, username: client.username }, 'send flying')
+  client.write('abilities', {
+    flags: abilities_flags({ flying }),
+    flyingSpeed: 0.05,
+    walkingSpeed: 0.1,
+  })
+}

src/core/sound.js

@@ -14,6 +14,7 @@ export const CATEGORY = {
 export const Sound = {
   SWITCH_SPELL: 'aresrpg:ui_spell_switch',
   SPELL_FAILED: 'aresrpg:ui_spell_failed',
+  MUSIC_MANRACNI: 'aresrpg:music_manracni',
 }
 
 export function play_sound({

src/modules/player_main_menu.js

@@ -0,0 +1,53 @@
+import { setInterval } from 'timers/promises'
+
+import { aiter } from 'iterator-helper'
+
+import { set_flying } from '../core/attribute.js'
+import { write_inventory } from '../core/inventory.js'
+import { Sound, play_sound } from '../core/sound.js'
+import { PLAYER_INVENTORY_ID } from '../settings.js'
+import { abortable } from '../core/iterator.js'
+
+const MANRACNI_DURATION = 67000
+
+function reset_player_inventory(client) {
+  write_inventory(client, { inventory: {} }) // clear inventory
+  // set overlay
+  client.write('set_slot', {
+    windowId: PLAYER_INVENTORY_ID,
+    slot: 5, // head slot
+    item: { present: true, itemId: 217 /* carved_pumpkin */, itemCount: 1 },
+  })
+}
+
+/** @type {import("../server").Module} */
+export default {
+  name: 'player_main_menu',
+  observe({ client, events, signal }) {
+    client.on('window_click', () => reset_player_inventory(client))
+
+    events.once('STATE_UPDATED', state => {
+      reset_player_inventory(client)
+      set_flying(client, true)
+
+      play_sound({ client, sound: Sound.MUSIC_MANRACNI, ...state.position })
+
+      aiter(
+        abortable(setInterval(MANRACNI_DURATION, null, { signal })),
+      ).forEach(() =>
+        play_sound({ client, sound: Sound.MUSIC_MANRACNI, ...state.position }),
+      )
+    })
+
+    signal.addEventListener(
+      'abort',
+      () => {
+        set_flying(client, false)
+        client.write('stop_sound', {
+          flags: 0 /* https://wiki.vg/index.php?title=Protocol&oldid=16907#Stop_Sound MASTER category */,
+        })
+      },
+      { once: true },
+    )
+  },
+}

src/server.js

@@ -59,6 +59,7 @@ import player_resource_pack from './modules/player_resource_pack.js'
 import player_login from './modules/player_login.js'
 import player_statistics from './modules/player_statistics.js'
 import { create_client_handler } from './player.js'
+import player_main_menu from './modules/player_main_menu.js'
 
 /** @template U
  * @typedef {import('./types').UnionToIntersection<U>} UnionToIntersection */
@@ -113,16 +114,23 @@ const world = await Promise.resolve(entity_modules)
 const observables = {
   /** @type {import("./player").Observables} */
   optional_modules: {
+    'MAIN:MENU': [player_main_menu],
     'GAME:GHOST': [
       player_attributes,
+      player_bells,
       player_block_placement,
-      player_inventory,
+      player_position,
+      player_soul,
+      player_sync,
+      player_tablist,
+      player_ui,
       player_chunk,
     ],
     'GAME:ALIVE': [
       player_attributes,
       player_bells,
       player_block_placement,
+      player_position,
       player_damage,
       player_environmental_damage,
       player_experience,
@@ -153,7 +161,6 @@ const observables = {
     ...(USE_RESOURCE_PACK ? [player_resource_pack] : []),
     player_login,
     player_statistics,
-    player_position,
     player_commands,
     player_chat,
   ],

src/types.d.ts

@@ -283,4 +283,4 @@ type MobAction = {
   [K in keyof MobActions]: { type: K; payload: MobActions[K]; time: number }
 }[keyof MobActions]
 
-type GameState = 'GAME:ALIVE' | 'GAME:GHOST'
+type GameState = 'GAME:ALIVE' | 'GAME:GHOST' | 'MAIN:MENU'