diff --git a/public/libs/events.js b/public/libs/events.js
index f3a57b7..9c15700 100644
--- a/public/libs/events.js
+++ b/public/libs/events.js
@@ -4425,19 +4425,19 @@ events.prototype.tryUseItem = function (itemId, noRoute, callback) {
     if (itemId == 'book') {
         core.ui.closePanel();
         core.openBook(false);
-        callback();
+        callback?.();
         return;
     }
     if (itemId == 'fly') {
         core.ui.closePanel();
         core.useFly(false);
-        callback();
+        callback?.();
         return;
     }
     if (itemId == 'centerFly') {
         core.ui.closePanel();
         core.ui._drawCenterFly();
-        callback();
+        callback?.();
         return;
     }
     if (core.canUseItem(itemId)) {
@@ -4446,5 +4446,5 @@ events.prototype.tryUseItem = function (itemId, noRoute, callback) {
         core.playSound('操作失败');
         core.drawTip('当前无法使用' + core.material.items[itemId].name, itemId);
     }
-    callback();
+    callback?.();
 };
diff --git a/public/project/functions.js b/public/project/functions.js
index d7fe8a4..e0580fd 100644
--- a/public/project/functions.js
+++ b/public/project/functions.js
@@ -568,6 +568,12 @@ var functions_d6ad677b_427a_4623_b50f_a445a3b0ef8a = {
 
             // 如需强行终止行走可以在这里条件判定：
             // core.stopAutomaticRoute();
+            Mota.require('var', 'hook').emit(
+                'moveOneStep',
+                nowx,
+                nowy,
+                core.status.floorId
+            );
         },
         moveDirectly: function (x, y, ignoreSteps) {
             // 瞬间移动；x,y为要瞬间移动的点；ignoreSteps为减少的步数，可能之前已经被计算过
diff --git a/src/core/main/custom/danmaku.ts b/src/core/main/custom/danmaku.ts
index f58d21b..e13b0ed 100644
--- a/src/core/main/custom/danmaku.ts
+++ b/src/core/main/custom/danmaku.ts
@@ -6,6 +6,7 @@ import { deleteWith, ensureArray, parseCss, tip } from '@/plugin/utils';
 import axios, { toFormData } from 'axios';
 import { Component, VNode, h, ref, shallowReactive } from 'vue';
 /* @__PURE__ */ import { id, password } from '../../../../user';
+import { mainSetting } from '../setting';
 
 type CSSObj = Partial<Record<CanParseCss, string>>;
 
@@ -97,15 +98,26 @@ export class Danmaku extends EventEmitter<DanmakuEvent> {
         const form = toFormData(data);
         /* @__PURE__ */ form.append('userid', id);
         /* @__PURE__ */ form.append('password', password);
-        const res = await axios.post<PostDanmakuResponse>(
-            Danmaku.backend,
-            form
-        );
 
-        this.id = res.data.id;
-        this.posting = false;
+        try {
+            const res = await axios.post<PostDanmakuResponse>(
+                Danmaku.backend,
+                form
+            );
 
-        return res;
+            this.id = res.data.id;
+            this.posting = false;
+
+            return res;
+        } catch (e) {
+            this.posted = false;
+            this.posting = false;
+            logger.error(
+                3,
+                `Unexpected error when posting danmaku. Error info: ${e}`
+            );
+            return Promise.resolve();
+        }
     }
 
     /**
@@ -425,6 +437,20 @@ Danmaku.registerSpecContent('i', content => {
 });
 
 /* @__PURE__ */ Danmaku.backend = `/danmaku`;
+
 Mota.require('var', 'hook').once('reset', () => {
     Danmaku.fetch();
 });
+
+// 勇士移动后显示弹幕
+Mota.require('var', 'hook').on('moveOneStep', (x, y, floor) => {
+    const enabled = mainSetting.getValue('ui.danmaku', true);
+    if (!enabled) return;
+    const f = Danmaku.allInPos[floor];
+    if (f) {
+        const danmaku = f[`${x},${y}`];
+        if (danmaku) {
+            danmaku.show();
+        }
+    }
+});
diff --git a/src/core/main/setting.ts b/src/core/main/setting.ts
index 84ff36e..5d3cee0 100644
--- a/src/core/main/setting.ts
+++ b/src/core/main/setting.ts
@@ -486,7 +486,7 @@ mainSetting
             .register('bookScale', '怪物手册缩放', 100, COM.Number, [10, 500, 10])
             .setDisplayFunc('bookScale', value => `${value}%`)
             .register('danmaku', '显示弹幕', true, COM.Boolean)
-            .register('danmakuSpeed', '弹幕速度', 60, COM.Number, [10, 200, 5])
+            .register('danmakuSpeed', '弹幕速度', 60, COM.Number, [10, 1000, 5])
     );
 
 const loading = Mota.require('var', 'loading');
@@ -521,7 +521,10 @@ loading.once('coreInit', () => {
         ),
         'ui.bookScale': storage.getValue('ui.bookScale', isMobile ? 100 : 80),
         'ui.danmaku': storage.getValue('ui.danmaku', true),
-        'ui.danmakuSpeed': storage.getValue('ui.danmakuSpeed', 60),
+        'ui.danmakuSpeed': storage.getValue(
+            'ui.danmakuSpeed', 
+            Math.floor(window.innerWidth / 25) * 5
+        ),
     });
 });
 
diff --git a/src/game/game.ts b/src/game/game.ts
index aa9ab0c..eb24186 100644
--- a/src/game/game.ts
+++ b/src/game/game.ts
@@ -91,6 +91,7 @@ export interface GameEvent extends EmitableEvent {
     ) => void;
     afterOpenDoor: (doorId: AllIdsOf<'animates'>, x: number, y: number) => void;
     afterChangeFloor: (floorId: FloorIds) => void;
+    moveOneStep: (x: number, y: number, floorId: FloorIds) => void;
 }
 
 export const hook = new EventEmitter<GameEvent>();