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Assets/Editor/MultiSplineFollowerEditor.cs

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+using UnityEngine;
+using UnityEditor;
+using UnityEngine.Splines;
+using System.Linq;
+
+[CustomEditor(typeof(MultiSplineFollower))]
+public class MultiSplineFollowerEditor : Editor
+{
+    public override void OnInspectorGUI()
+    {
+        // Vẽ inspector mặc định (hiện các trường routes, routes1, routes2, speed, rotationSpeed, ...)
+        base.OnInspectorGUI();
+
+        MultiSplineFollower follower = (MultiSplineFollower)target;
+
+        // Hiển thị từng nhóm route
+        DrawRouteGroup(follower.routes, "Routes (Nhóm 0)");
+        DrawRouteGroup(follower.routes1, "Routes1 (Nhóm 1)");
+        DrawRouteGroup(follower.routes2, "Routes2 (Nhóm 2)");
+
+        if (GUI.changed)
+        {
+            EditorUtility.SetDirty(follower);
+        }
+    }
+
+    private void DrawRouteGroup(SplineRoute[] routeArray, string groupLabel)
+    {
+        if (routeArray == null) return;
+
+        EditorGUILayout.Space();
+        EditorGUILayout.LabelField(groupLabel, EditorStyles.boldLabel);
+
+        for (int r = 0; r < routeArray.Length; r++)
+        {
+            var route = routeArray[r];
+            if (route == null) continue;
+
+            EditorGUILayout.BeginVertical("box");
+            EditorGUILayout.LabelField($"Route {r + 1}", EditorStyles.miniBoldLabel);
+
+            // START
+            if (route.splineStart != null)
+            {
+                int knotCount = route.splineStart.Spline?.Knots.Count() ?? 0;
+                if (knotCount > 0)
+                {
+                    string[] options = Enumerable.Range(0, knotCount).Select(i => $"Knot {i}").ToArray();
+                    route.startKnotIndex = EditorGUILayout.Popup("Start Knot", route.startKnotIndex, options);
+                }
+                else
+                {
+                    EditorGUILayout.HelpBox("SplineStart không có knot nào.", MessageType.Warning);
+                }
+            }
+            else
+            {
+                EditorGUILayout.HelpBox("Chưa gán splineStart", MessageType.Info);
+            }
+
+            // END
+            if (route.splineEnd != null)
+            {
+                int knotCount = route.splineEnd.Spline?.Knots.Count() ?? 0;
+                if (knotCount > 0)
+                {
+                    string[] options = Enumerable.Range(0, knotCount).Select(i => $"Knot {i}").ToArray();
+                    route.endKnotIndex = EditorGUILayout.Popup("End Knot", route.endKnotIndex, options);
+                }
+                else
+                {
+                    EditorGUILayout.HelpBox("SplineEnd không có knot nào.", MessageType.Warning);
+                }
+            }
+            else
+            {
+                EditorGUILayout.HelpBox("Chưa gán splineEnd", MessageType.Info);
+            }
+
+            EditorGUILayout.EndVertical();
+        }
+    }
+}

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Assets/Script/SplineMovement.cs

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+using UnityEngine;
+using UnityEngine.Splines;
+using Unity.Mathematics;
+using System.Linq;
+using System.Collections;
+using System.Collections.Generic;
+
+public class MultiSplineFollower : MonoBehaviour
+{
+    [Header("Tuyến đường 1")]
+    public SplineRoute[] routes;
+    [Header("Tuyến đường 2")]
+    public SplineRoute[] routes1;
+    [Header("Tuyến đường 3")]
+    public SplineRoute[] routes2;
+
+    [Header("Cài đặt chuyển động")]
+    public float speed = 2f;
+    public float rotationSpeed = 180f;
+    public float angleThreshold = 30f;
+
+    [Header("Cài đặt quét TCIA")]
+    public float scanRadius = 0.5f; // bán kính quét đối tượng TCIA quanh follower
+
+    private int currentRouteIndex = 0;
+    private int currentRouteGroup = 0; // 0 = routes, 1 = routes1, 2 = routes2
+    private float t = 0f;
+    private bool onFirstSpline = true;
+    private bool isDelaying = false;
+
+    void Start()
+    {
+        if (GetActiveRoutes() == null || GetActiveRoutes().Length == 0) return;
+
+        var activeRoutes = GetActiveRoutes();
+        InitRoute(activeRoutes[0]);
+        t = activeRoutes[0].tStart;
+        transform.position = activeRoutes[0].splineStart.EvaluatePosition(0, t);
+    }
+
+    void Update()
+    {
+        var activeRoutes = GetActiveRoutes();
+        if (activeRoutes == null || activeRoutes.Length == 0) return;
+        if (currentRouteIndex >= activeRoutes.Length) return;
+        if (isDelaying) return;
+
+        SplineRoute route = activeRoutes[currentRouteIndex];
+        if (onFirstSpline)
+            MoveOnSpline(route.splineStart, ref t, route.tCommonA, true, route);
+        else
+            MoveOnSpline(route.splineEnd, ref t, route.tEnd, false, route);
+    }
+
+    SplineRoute[] GetActiveRoutes()
+    {
+        switch (currentRouteGroup)
+        {
+            case 0: return routes;
+            case 1: return routes1;
+            case 2: return routes2;
+            default: return null;
+        }
+    }
+
+    void InitRoute(SplineRoute route)
+    {
+        BezierKnot knotStart = route.splineStart.Spline.Knots.ElementAt(route.startKnotIndex);
+        BezierKnot knotEnd = route.splineEnd.Spline.Knots.ElementAt(route.endKnotIndex);
+
+        Vector3 knotX = route.splineStart.transform.TransformPoint((Vector3)knotStart.Position);
+        Vector3 knotY = route.splineEnd.transform.TransformPoint((Vector3)knotEnd.Position);
+
+        route.commonPoint = FindCommonPoint(route.splineStart, route.splineEnd);
+
+        float3 nearest;
+        SplineUtility.GetNearestPoint(route.splineStart.Spline,
+            (float3)route.splineStart.transform.InverseTransformPoint(knotX),
+            out nearest, out route.tStart);
+
+        SplineUtility.GetNearestPoint(route.splineStart.Spline,
+            (float3)route.splineStart.transform.InverseTransformPoint(route.commonPoint),
+            out nearest, out route.tCommonA);
+
+        SplineUtility.GetNearestPoint(route.splineEnd.Spline,
+            (float3)route.splineEnd.transform.InverseTransformPoint(route.commonPoint),
+            out nearest, out route.tCommonB);
+
+        SplineUtility.GetNearestPoint(route.splineEnd.Spline,
+            (float3)route.splineEnd.transform.InverseTransformPoint(knotY),
+            out nearest, out route.tEnd);
+
+        onFirstSpline = true;
+    }
+
+    void MoveOnSpline(SplineContainer spline, ref float t, float targetT, bool first, SplineRoute route)
+    {
+        Vector3 pos = spline.EvaluatePosition(0, t);
+        Vector3 tangent = Vector3.Normalize((Vector3)spline.EvaluateTangent(0, t));
+        if (route.reverseDirection) tangent = -tangent;
+
+        float angle = Vector3.Angle(transform.forward, tangent);
+
+        if (angle > angleThreshold)
+        {
+            Quaternion targetRot = Quaternion.LookRotation(tangent, Vector3.up);
+            transform.rotation = Quaternion.RotateTowards(transform.rotation, targetRot, rotationSpeed * Time.deltaTime);
+            return;
+        }
+
+        float dir = (targetT > t) ? 1f : -1f;
+        t += dir * (Time.deltaTime * speed / spline.CalculateLength(0));
+
+        if ((dir > 0 && t >= targetT) || (dir < 0 && t <= targetT))
+            t = targetT;
+
+        pos = spline.EvaluatePosition(0, t);
+        tangent = Vector3.Normalize((Vector3)spline.EvaluateTangent(0, t));
+        if (route.reverseDirection) tangent = -tangent;
+
+        transform.position = pos;
+        transform.rotation = Quaternion.LookRotation(tangent, Vector3.up);
+
+        if (first && Mathf.Approximately(t, targetT))
+        {
+            onFirstSpline = false;
+            t = route.tCommonB;
+        }
+        else if (!first && Mathf.Approximately(t, targetT))
+        {
+            if (route.delayAtEnd)
+            {
+                StartCoroutine(DelayAndNextRoute(route));
+            }
+            else
+            {
+                NextRoute();
+            }
+        }
+    }
+
+    IEnumerator DelayAndNextRoute(SplineRoute route)
+    {
+        isDelaying = true;
+
+        if (route.attachTCIAObjects)
+        {
+            Debug.Log($"[{route.splineStart.name}] attachTCIAObjects = TRUE → quét và gắn TCIA");
+            AttachTCIAChildren();
+        }
+        else
+        {
+            DetachTCIAChildren();
+        }
+
+        yield return new WaitForSeconds(2f);
+
+        isDelaying = false;
+        NextRoute();
+    }
+
+    void AttachTCIAChildren()
+    {
+        GameObject[] allObjects = Object.FindObjectsByType<GameObject>(FindObjectsSortMode.None);
+
+        foreach (GameObject obj in allObjects)
+        {
+            if (!obj.activeInHierarchy || obj == this.gameObject)
+                continue;
+
+            if (obj.name.ToUpper().Contains("TCIA"))
+            {
+                float distance = Vector3.Distance(transform.position, obj.transform.position);
+                if (distance <= scanRadius)
+                {
+                    obj.transform.SetParent(this.transform, true);
+                }
+            }
+        }
+    }
+
+    void DetachTCIAChildren()
+    {
+        List<Transform> childrenToDetach = new List<Transform>();
+
+        foreach (Transform child in transform)
+        {
+            if (child.name.ToUpper().Contains("TCIA"))
+            {
+                childrenToDetach.Add(child);
+            }
+        }
+
+        foreach (Transform child in childrenToDetach)
+        {
+            child.SetParent(null, true);
+        }
+    }
+
+    void NextRoute()
+    {
+        var activeRoutes = GetActiveRoutes();
+
+        currentRouteIndex++;
+        if (activeRoutes != null && currentRouteIndex < activeRoutes.Length)
+        {
+            InitRoute(activeRoutes[currentRouteIndex]);
+            t = activeRoutes[currentRouteIndex].tStart;
+            transform.position = activeRoutes[currentRouteIndex].splineStart.EvaluatePosition(0, t);
+        }
+        else
+        {
+            // Hết nhóm hiện tại → chuyển sang nhóm tiếp theo
+            currentRouteGroup++;
+            currentRouteIndex = 0;
+
+            var nextGroupRoutes = GetActiveRoutes();
+
+            if (nextGroupRoutes != null && nextGroupRoutes.Length > 0)
+            {
+                Debug.Log($"Chuyển sang nhóm tuyến: {currentRouteGroup}");
+                InitRoute(nextGroupRoutes[0]);
+                t = nextGroupRoutes[0].tStart;
+                transform.position = nextGroupRoutes[0].splineStart.EvaluatePosition(0, t);
+            }
+            else
+            {
+                Debug.Log("Hoàn thành toàn bộ tuyến đường!");
+            }
+        }
+    }
+
+    Vector3 FindCommonPoint(SplineContainer s1, SplineContainer s2)
+    {
+        foreach (var knotA in s1.Spline.Knots)
+        {
+            Vector3 pA = s1.transform.TransformPoint((Vector3)knotA.Position);
+            foreach (var knotB in s2.Spline.Knots)
+            {
+                Vector3 pB = s2.transform.TransformPoint((Vector3)knotB.Position);
+                if (Vector3.Distance(pA, pB) < 0.01f)
+                    return pA;
+            }
+        }
+        Debug.LogWarning("Không tìm thấy điểm chung!");
+        return Vector3.zero;
+    }
+}
+
+[System.Serializable]
+public class SplineRoute
+{
+    public SplineContainer splineStart;
+    public int startKnotIndex;
+    public SplineContainer splineEnd;
+    public int endKnotIndex;
+    public bool reverseDirection;
+    public bool delayAtEnd;
+    public bool attachTCIAObjects = true; // true = gắn TCIA, false = tách TCIA khi delay
+
+    [HideInInspector] public Vector3 commonPoint;
+    [HideInInspector] public float tStart;
+    [HideInInspector] public float tCommonA;
+    [HideInInspector] public float tCommonB;
+    [HideInInspector] public float tEnd;
+}

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Assets/Script/mqtt.meta

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Assets/Script/mqtt/MqttClientController.cs

@@ -0,0 +1,46 @@
+using UnityEngine;
+using MQTTnet;
+using MQTTnet.Client;
+using System.Threading.Tasks;
+using System.Text;
+
+public class MqttClientController : MonoBehaviour
+{
+    public string mqttBrokerAddress = "broker.hivemq.com";
+    public int mqttPort = 1883;
+    public IMqttClient mqttClient { get; private set; }
+    public bool IsConnected => mqttClient?.IsConnected ?? false;
+
+    async void Start()
+    {
+        var factory = new MqttFactory();
+        mqttClient = factory.CreateMqttClient();
+
+        var options = new MqttClientOptionsBuilder()
+            .WithClientId("UnityClient")
+            .WithTcpServer(mqttBrokerAddress, mqttPort)
+            .WithCleanSession()
+            .Build();
+
+        mqttClient.ConnectedAsync += async e =>
+        {
+            Debug.Log("Connected to MQTT Broker.");
+            await Task.CompletedTask;
+        };
+
+        mqttClient.DisconnectedAsync += async e =>
+        {
+            Debug.Log("Disconnected from MQTT Broker.");
+            await Task.CompletedTask;
+        };
+
+        try
+        {
+            await mqttClient.ConnectAsync(options);
+        }
+        catch (System.Exception ex)
+        {
+            Debug.LogError($"MQTT connection failed: {ex.Message}");
+        }
+    }
+}

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Assets/Script/mqtt/MqttOJ.cs

@@ -0,0 +1,30 @@
+using MQTTnet;
+using MQTTnet.Protocol;
+using UnityEngine;
+
+public class MqttOJ : MonoBehaviour
+{
+    public MqttClientController mqttClientController;
+    public string topic = "unity/position";
+
+    void Update()
+    {
+        if (mqttClientController != null && mqttClientController.IsConnected)
+        {
+            Vector3 position = transform.position;
+            string message = JsonUtility.ToJson(position);
+
+            var mqttMessage = new MqttApplicationMessageBuilder()
+                .WithTopic(topic)
+                .WithPayload(message)
+                .WithQualityOfServiceLevel(MqttQualityOfServiceLevel.ExactlyOnce)
+                .Build();
+
+            mqttClientController.mqttClient.PublishAsync(mqttMessage);
+        }
+        else
+        {
+            //Debug.LogWarning("MQTT client is not connected. Skipping publish.");
+        }
+    }
+}

Assets/Script/mqtt/MqttOJ.cs.meta

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Assets/Script/mqtt/MqttReceiver.cs

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+using MQTTnet;
+using MQTTnet.Client;
+using System;
+using System.Threading.Tasks;
+using UnityEngine;
+
+public class MqttUnityClient : MonoBehaviour
+{
+    private IMqttClient _mqttClient;
+
+    private async void Start()
+    {
+        await ConnectAsync();
+        // Đăng ký chủ đề để nhận tin nhắn
+        await _mqttClient.SubscribeAsync(new MqttTopicFilterBuilder().WithTopic("unity/topic").Build());
+    }
+
+    private async Task ConnectAsync()
+    {
+        var factory = new MqttFactory();
+        _mqttClient = factory.CreateMqttClient();
+
+        var options = new MqttClientOptionsBuilder()
+            .WithClientId("UnityClient")
+            .WithTcpServer("broker.hivemq.com", 1883)
+            .WithCleanSession()
+            .Build();
+
+        _mqttClient.ApplicationMessageReceivedAsync += e =>
+        {
+            // Xử lý tin nhắn nhận được
+            var message = System.Text.Encoding.UTF8.GetString(e.ApplicationMessage.PayloadSegment);
+            Debug.Log($"Received: {message}");
+            return Task.CompletedTask;
+        };
+
+        await _mqttClient.ConnectAsync(options);
+    }
+
+    public async Task PublishAsync(string topic, string payload)
+    {
+        var message = new MqttApplicationMessageBuilder()
+            .WithTopic(topic)
+            .WithPayload(payload)
+            .WithQualityOfServiceLevel(MQTTnet.Protocol.MqttQualityOfServiceLevel.AtMostOnce)
+            .Build();
+
+        if (_mqttClient.IsConnected)
+        {
+            await _mqttClient.PublishAsync(message);
+            Debug.Log($"Published: {payload} to {topic}");
+        }
+    }
+}

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