add unity project for networking

Network/Assets/Scripts/GameManager.cs

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+using System.Collections.Generic;
+using Unity.Netcode;
+using UnityEngine;
+
+namespace DefaultNamespace
+{
+    public class GameManager : NetworkBehaviour
+    {
+        [SerializeField] private NetworkObject playerPrefab;
+        [SerializeField] private Transform[] startPositions;
+
+        private int _currentStartPositionIndex = 0;
+        
+        protected override void OnInSceneObjectsSpawned()
+        {
+            if (!IsServer) return;
+
+            foreach (KeyValuePair<ulong, NetworkClient> client in NetworkManager.ConnectedClients)
+            {
+                Transform position = startPositions[_currentStartPositionIndex++ % startPositions.Length];
+                NetworkObject player = Instantiate(playerPrefab, position.position, position.rotation);
+                player.SpawnAsPlayerObject(client.Key);
+            }
+        }
+    }
+}

Network/Assets/Scripts/GameManager.cs.meta

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+fileFormatVersion: 2
+guid: 3126aff9b38a49b7b7c2e80705ca0e38
+timeCreated: 1749655488

Network/Assets/Scripts/NetworkPlayer.cs

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+using System;
+using Unity.Netcode;
+using UnityEngine;
+
+namespace DefaultNamespace
+{
+    public class NetworkPlayer : NetworkBehaviour
+    {
+        [SerializeField] private Camera camera;
+        [SerializeField] private float speed = 10.0f;
+        [SerializeField] private float rotationSpeed = 60.0f;
+        [SerializeField] private Rigidbody bulletPrefab;
+        [SerializeField] private float bulletForce = 50.0f;
+        [SerializeField] private float initialHealth = 100.0f;
+        
+        private NetworkVariable<float> _health = new NetworkVariable<float>(0);
+        
+        public override void OnNetworkSpawn()
+        {
+            camera.gameObject.SetActive(IsLocalPlayer);
+
+            if (IsLocalPlayer)
+            {
+                _health.OnValueChanged += OnHealthChanged;
+            }
+
+            if (IsServer)
+            {
+                _health.Value = initialHealth;
+            }
+        }
+
+        public override void OnNetworkDespawn()
+        {
+            if (IsLocalPlayer)
+            {
+                _health.OnValueChanged -= OnHealthChanged;
+            }
+        }
+
+        private void OnHealthChanged(float previousValue, float newValue)
+        {
+            // update health bar etc.
+        }
+
+        private void Update()
+        {
+            if (!IsLocalPlayer) return;
+
+            if (Input.GetButtonDown("Fire1"))
+            {
+                ShootRpc();
+            }
+        }
+
+        private void FixedUpdate()
+        {
+            if (!IsLocalPlayer) return;
+
+            transform.Translate(
+                (Vector3.right * Input.GetAxis("Horizontal") + Vector3.forward * Input.GetAxis("Vertical")) *
+                (speed * Time.deltaTime));
+
+            transform.Rotate(Vector3.up, Input.GetAxis("Mouse X") * rotationSpeed * Time.deltaTime);
+        }
+
+        [Rpc(SendTo.Server)]
+        private void ShootRpc()
+        {
+            Rigidbody bullet = Instantiate(bulletPrefab, transform.position + transform.forward, transform.rotation);
+            bullet.GetComponent<NetworkObject>().Spawn();
+            bullet.AddForce(transform.forward * bulletForce, ForceMode.Impulse);
+        }
+    }
+}

Network/Assets/Scripts/NetworkPlayer.cs.meta

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+fileFormatVersion: 2
+guid: d88689de44f645e5b10cdfea836c8eb2
+timeCreated: 1749657014

Network/Assets/Scripts/StartGameButton.cs

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+using System;
+using Unity.Netcode;
+using UnityEditor;
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.SceneManagement;
+
+namespace DefaultNamespace
+{
+    public class StartGameButton : MonoBehaviour, IPointerClickHandler
+    {
+#if UNITY_EDITOR
+        [SerializeField] private SceneAsset sceneAsset;
+
+        private void OnValidate()
+        {
+            sceneName = sceneAsset.name;
+        }
+#endif
+        
+        [SerializeField, HideInInspector] private string sceneName;
+
+        private void Awake()
+        {
+            NetworkManager.Singleton.OnClientConnectedCallback += OnClientConnected;
+        }
+
+        private void OnDestroy()
+        {
+            NetworkManager.Singleton.OnClientConnectedCallback -= OnClientConnected;
+        }
+
+        private void OnClientConnected(ulong obj)
+        {
+            gameObject.SetActive(NetworkManager.Singleton.IsServer);
+        }
+
+        public void OnPointerClick(PointerEventData eventData)
+        {
+            NetworkManager.Singleton.SceneManager.LoadScene(sceneName, LoadSceneMode.Single);
+        }
+    }
+}

Network/Assets/Scripts/StartGameButton.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: c49867b1609847119871805163febb0b
+timeCreated: 1749654423