diff --git a/examples/cocos-creator-multiplayer/backend/src/shared/game/GameSystem.ts b/examples/cocos-creator-multiplayer/backend/src/shared/game/GameSystem.ts
index 6a4621a..805b5ac 100644
--- a/examples/cocos-creator-multiplayer/backend/src/shared/game/GameSystem.ts
+++ b/examples/cocos-creator-multiplayer/backend/src/shared/game/GameSystem.ts
@@ -49,8 +49,8 @@ export class GameSystem {
                     startPos: { ...player.pos },
                     startTime: this._state.now,
                     targetPos: {
-                        x: player.pos.x + input.direction.x * gameConfig.arrowDistance,
-                        y: player.pos.y + input.direction.y * gameConfig.arrowDistance
+                        x: player.pos.x + input.offset.x,
+                        y: player.pos.y + input.offset.y
                     },
                     targetTime: this._state.now + gameConfig.arrowFlyTime
                 });
@@ -75,11 +75,11 @@ export class GameSystem {
                     // 伤害判定
                     let damagedPlayers = this._state.players.filter(v => {
                         // 不能伤害自己
-                        if (v.id === arrow.fromPlayerId) {
-                            return false;
-                        }
+                        // if (v.id === arrow.fromPlayerId) {
+                        //     return false;
+                        // }
 
-                        return (v.pos.x - arrow.targetPos.x) * (v.pos.x - arrow.targetPos.x) + (v.pos.y - arrow.targetPos.y) * (v.pos.y - arrow.targetPos.y) <= gameConfig.arrowDistance * gameConfig.arrowDistance
+                        return (v.pos.x - arrow.targetPos.x) * (v.pos.x - arrow.targetPos.x) + (v.pos.y - arrow.targetPos.y) * (v.pos.y - arrow.targetPos.y) <= gameConfig.arrowAttackRadius * gameConfig.arrowAttackRadius
                     });
                     damagedPlayers.forEach(p => {
                         // 设置击晕状态
@@ -112,7 +112,7 @@ export interface PlayerMove {
 export interface PlayerAttack {
     type: 'PlayerAttack',
     playerId: number,
-    direction: { x: number, y: number },
+    offset: { x: number, y: number },
 }
 export interface PlayerJoin {
     type: 'PlayerJoin',
diff --git a/examples/cocos-creator-multiplayer/backend/src/shared/game/gameConfig.ts b/examples/cocos-creator-multiplayer/backend/src/shared/game/gameConfig.ts
index 9f6b124..7f973d2 100644
--- a/examples/cocos-creator-multiplayer/backend/src/shared/game/gameConfig.ts
+++ b/examples/cocos-creator-multiplayer/backend/src/shared/game/gameConfig.ts
@@ -9,6 +9,7 @@ export const gameConfig = {
     moveSpeed: 10,
 
     arrowFlyTime: 500,
-    arrowDistance: 7,
+    arrowDistance: 8,
+    arrowAttackRadius: 3,
     arrowDizzyTime: 1000
 }
\ No newline at end of file
diff --git a/examples/cocos-creator-multiplayer/backend/src/shared/protocols/serviceProto.ts b/examples/cocos-creator-multiplayer/backend/src/shared/protocols/serviceProto.ts
index cf61964..b9fdcbb 100644
--- a/examples/cocos-creator-multiplayer/backend/src/shared/protocols/serviceProto.ts
+++ b/examples/cocos-creator-multiplayer/backend/src/shared/protocols/serviceProto.ts
@@ -17,7 +17,7 @@ export interface ServiceType {
 }
 
 export const serviceProto: ServiceProto<ServiceType> = {
-    "version": 1,
+    "version": 2,
     "services": [
         {
             "id": 0,
@@ -159,8 +159,8 @@ export const serviceProto: ServiceProto<ServiceType> = {
                     }
                 },
                 {
-                    "id": 2,
-                    "name": "direction",
+                    "id": 3,
+                    "name": "offset",
                     "type": {
                         "type": "Interface",
                         "properties": [
diff --git a/examples/cocos-creator-multiplayer/frontend/assets/prefabs/Arrow/Arrow.ts b/examples/cocos-creator-multiplayer/frontend/assets/prefabs/Arrow/Arrow.ts
index d615b46..6d8b8d7 100644
--- a/examples/cocos-creator-multiplayer/frontend/assets/prefabs/Arrow/Arrow.ts
+++ b/examples/cocos-creator-multiplayer/frontend/assets/prefabs/Arrow/Arrow.ts
@@ -22,7 +22,6 @@ export class Arrow extends Component {
         this._endPos.set(state.targetPos.x, 0, -state.targetPos.y);
     }
 
-
     updateState(state: ArrowState, now: number) {
         let percent = MathUtil.limit((now - state.startTime) / (state.targetTime - state.startTime), 0, 1);
 
diff --git a/examples/cocos-creator-multiplayer/frontend/assets/scenes/GameScene/GameScene.ts b/examples/cocos-creator-multiplayer/frontend/assets/scenes/GameScene/GameScene.ts
index c089af8..39c38a6 100644
--- a/examples/cocos-creator-multiplayer/frontend/assets/scenes/GameScene/GameScene.ts
+++ b/examples/cocos-creator-multiplayer/frontend/assets/scenes/GameScene/GameScene.ts
@@ -143,9 +143,10 @@ export class GameScene extends Component {
     }
 
     onBtnAttack() {
+        let offset = this._playerInstances[this.gameManager.selfPlayerId].node.forward.clone().normalize().multiplyScalar(gameConfig.arrowDistance);
         this.gameManager.sendClientInput({
             type: 'PlayerAttack',
-            direction: this._playerInstances[this.gameManager.selfPlayerId].node.forward
+            offset: { x: offset.x, y: -offset.z }
         })
     }
 
diff --git a/examples/cocos-creator-multiplayer/frontend/assets/scripts/models/GameManager.ts b/examples/cocos-creator-multiplayer/frontend/assets/scripts/models/GameManager.ts
index 6ec3182..926360a 100644
--- a/examples/cocos-creator-multiplayer/frontend/assets/scripts/models/GameManager.ts
+++ b/examples/cocos-creator-multiplayer/frontend/assets/scripts/models/GameManager.ts
@@ -11,6 +11,7 @@ export class GameManager {
 
     gameSystem = new GameSystem();
     lastServerState: GameSystemState = this.gameSystem.state;
+    lastRecvSetverStateTime = 0;
     selfPlayerId: number = -1;
     lastSN = 0;
 
@@ -67,6 +68,7 @@ export class GameManager {
 
         this.gameSystem.reset(ret.res.gameState);
         this.lastServerState = Object.merge(ret.res.gameState);
+        this.lastRecvSetverStateTime = Date.now();
         this.selfPlayerId = ret.res.playerId;
     }
 
@@ -77,6 +79,7 @@ export class GameManager {
             this.gameSystem.applyInput(input);
         }
         this.lastServerState = Object.merge({}, this.gameSystem.state);
+        this.lastRecvSetverStateTime = Date.now();
 
         // 和解
         let lastSn = frame.lastSn ?? -1;
@@ -89,6 +92,13 @@ export class GameManager {
                 });
             })
         })
+
+        // 本地时间流逝（会被下一次服务器状态覆盖）
+        this.gameSystem.applyInput({
+            type: 'TimePast',
+            dt: Date.now() - this.lastRecvSetverStateTime
+        });
+        this.lastRecvSetverStateTime = Date.now();
     }
 
     pendingInputMsgs: MsgClientInput[] = [];
@@ -109,6 +119,13 @@ export class GameManager {
             ...input,
             playerId: this.selfPlayerId
         });
+
+        // 本地时间流逝（会被下一次服务器状态覆盖）
+        // this.gameSystem.applyInput({
+        //     type: 'TimePast',
+        //     dt: Date.now() - this.lastRecvSetverStateTime
+        // });
+        // this.lastRecvSetverStateTime = Date.now();
     }
 
 }
\ No newline at end of file