aha

Assets/Mirror/Examples/PickupsDropsChilds/Scripts/SceneObject.cs

@@ -0,0 +1,108 @@
+using System.Collections;
+using UnityEngine;
+
+namespace Mirror.Examples.PickupsDropsChilds
+{
+    [RequireComponent(typeof(Rigidbody))]
+    public class SceneObject : NetworkBehaviour
+    {
+        [Header("Prefabs")]
+        public GameObject ballPrefab;
+        public GameObject batPrefab;
+        public GameObject boxPrefab;
+
+        [Header("Settings")]
+        [Range(0, 5)] public float force = 1;
+
+        // IMPORTANT: Order of SyncVar declarations is intentional!
+        // ChangeEquipment coroutine depends on equippedItemConfig being set first
+        // but equippedItemConfig can also be changed independent of equippedItem
+        // changing, e.g. reloading usages.
+        [Header("SyncVars in Specific Order")]
+        [SyncVar(hook = nameof(OnChangeEquippedItemConfig))]
+        public EquippedItemConfig equippedItemConfig = default;
+        [SyncVar(hook = nameof(OnChangeEquipment))]
+        public EquippedItem equippedItem;
+
+        [Header("Diagnostics")]
+        [ReadOnly] public GameObject equippedObject;
+        [ReadOnly] public Vector3 direction;
+
+        // Cached reference to IEquipped component on the child object
+        [ReadOnly, SerializeField] IEquipped iEquipped;
+
+        protected override void OnValidate()
+        {
+            if (Application.isPlaying) return;
+
+            base.OnValidate();
+
+            if (TryGetComponent(out Rigidbody rb))
+                rb.isKinematic = true;
+
+            if (TryGetComponent(out NetworkTransformBase nt))
+                nt.syncDirection = SyncDirection.ServerToClient;
+        }
+
+        public override void OnStartServer()
+        {
+            if (TryGetComponent(out Rigidbody rb))
+            {
+                rb.isKinematic = false;
+                rb.AddForce(direction * force, ForceMode.Impulse);
+            }
+        }
+
+        void OnMouseDown()
+        {
+            NetworkClient.localPlayer.GetComponent<PickupsDropsChilds>().CmdPickupItem(gameObject);
+        }
+
+        void OnChangeEquippedItemConfig(EquippedItemConfig _, EquippedItemConfig newEquippedItemConfig)
+        {
+            // equippedItem may be EquippedItem.nothing so check for not null
+            // before getting reference to the IEquipped interface component
+            if (equippedObject != null && equippedObject.TryGetComponent(out iEquipped))
+                if (!iEquipped.equippedItemConfig.Equals(equippedItemConfig))
+                    iEquipped.equippedItemConfig = equippedItemConfig;
+        }
+
+        void OnChangeEquipment(EquippedItem _, EquippedItem newEquippedItem)
+        {
+            StartCoroutine(ChangeEquipment());
+        }
+
+        // Since Destroy is delayed to the end of the current frame, we use a coroutine
+        // to clear out any child objects before instantiating the new one
+        IEnumerator ChangeEquipment()
+        {
+            while (transform.childCount > 0)
+            {
+                Destroy(transform.GetChild(0).gameObject);
+                yield return null;
+            }
+
+            equippedObject = null;
+
+            switch (equippedItem)
+            {
+                case EquippedItem.ball:
+                    equippedObject = Instantiate(ballPrefab, transform);
+                    break;
+                case EquippedItem.bat:
+                    equippedObject = Instantiate(batPrefab, transform);
+                    break;
+                case EquippedItem.box:
+                    equippedObject = Instantiate(boxPrefab, transform);
+                    break;
+            }
+
+            // equippedItem may be EquippedItem.nothing so check for not null
+            // before getting reference to the IEquipped interface component
+            // and only set the equippedItemConfig if it's different.
+            if (equippedObject != null && equippedObject.TryGetComponent(out iEquipped))
+                if (!iEquipped.equippedItemConfig.Equals(equippedItemConfig))
+                    iEquipped.equippedItemConfig = equippedItemConfig;
+        }
+    }
+}