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using System.Collections;
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using UnityEngine;
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namespace Mirror.Examples.PickupsDropsChilds
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{
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public class PickupsDropsChilds : NetworkBehaviour
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{
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[Header("Player Components")]
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public GameObject rightHand;
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[Header("Prefabs")]
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public GameObject ballPrefab;
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public GameObject batPrefab;
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public GameObject boxPrefab;
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public GameObject sceneObjectPrefab;
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// IMPORTANT: Order of SyncVar declarations is intentional!
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// ChangeEquipment coroutine depends on equippedItemConfig being set first
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// but equippedItemConfig can also be changed independent of equippedItem
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// changing, e.g. reloading usages.
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[Header("SyncVars in Specific Order")]
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[SyncVar(hook = nameof(OnChangeEquippedItemConfig))]
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public EquippedItemConfig equippedItemConfig = default;
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[SyncVar(hook = nameof(OnChangeEquipment))]
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public EquippedItem equippedItem;
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[Header("Diagnostics")]
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[ReadOnly] public GameObject equippedObject;
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// Cached reference to IEquipped component on the child object
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IEquipped iEquipped;
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void Update()
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{
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if (!isLocalPlayer) return;
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if (Input.GetKeyDown(KeyCode.Alpha0) && equippedItem != EquippedItem.nothing)
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CmdChangeEquippedItem(EquippedItem.nothing);
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if (Input.GetKeyDown(KeyCode.Alpha1) && equippedItem != EquippedItem.ball)
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CmdChangeEquippedItem(EquippedItem.ball);
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if (Input.GetKeyDown(KeyCode.Alpha2) && equippedItem != EquippedItem.bat)
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CmdChangeEquippedItem(EquippedItem.bat);
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if (Input.GetKeyDown(KeyCode.Alpha3) && equippedItem != EquippedItem.box)
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CmdChangeEquippedItem(EquippedItem.box);
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if (Input.GetKeyDown(KeyCode.U) && iEquipped != null)
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CmdUseItem();
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if (Input.GetKeyDown(KeyCode.I) && iEquipped != null)
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CmdAddUsages(1);
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if (Input.GetKeyDown(KeyCode.O) && iEquipped != null)
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CmdResetUsages();
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if (Input.GetKeyDown(KeyCode.P) && iEquipped != null)
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CmdResetUsages(3);
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if (Input.GetKeyDown(KeyCode.X) && equippedItem != EquippedItem.nothing)
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CmdDropItem();
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}
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void OnChangeEquippedItemConfig(EquippedItemConfig _, EquippedItemConfig newEquippedItemConfig)
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{
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// equippedItem may be EquippedItem.nothing so check for not null
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// before getting reference to the IEquipped interface component
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// and only set the equippedItemConfig if it's different.
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if (equippedObject != null && equippedObject.TryGetComponent(out iEquipped))
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if (!iEquipped.equippedItemConfig.Equals(equippedItemConfig))
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iEquipped.equippedItemConfig = equippedItemConfig;
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}
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void OnChangeEquipment(EquippedItem _, EquippedItem newEquippedItem)
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{
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StartCoroutine(ChangeEquipment());
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}
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// Since Destroy is delayed to the end of the current frame, we use a coroutine
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// to clear out any child objects before instantiating the new one
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IEnumerator ChangeEquipment()
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{
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while (rightHand.transform.childCount > 0)
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{
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Destroy(rightHand.transform.GetChild(0).gameObject);
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yield return null;
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}
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equippedObject = null;
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switch (equippedItem)
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{
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case EquippedItem.ball:
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equippedObject = Instantiate(ballPrefab, rightHand.transform);
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break;
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case EquippedItem.bat:
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equippedObject = Instantiate(batPrefab, rightHand.transform);
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break;
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case EquippedItem.box:
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equippedObject = Instantiate(boxPrefab, rightHand.transform);
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break;
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}
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// equippedItem may be EquippedItem.nothing so check for not null
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// before getting reference to the IEquipped interface component
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// and only set the equippedItemConfig if it's different.
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if (equippedObject != null && equippedObject.TryGetComponent(out iEquipped))
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if (!iEquipped.equippedItemConfig.Equals(equippedItemConfig))
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iEquipped.equippedItemConfig = equippedItemConfig;
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}
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[Command]
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void CmdChangeEquippedItem(EquippedItem selectedItem)
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{
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switch (selectedItem)
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{
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case EquippedItem.ball:
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if (ballPrefab.TryGetComponent(out IEquipped ball))
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equippedItemConfig = ball.equippedItemConfig;
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break;
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case EquippedItem.bat:
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if (batPrefab.TryGetComponent(out IEquipped bat))
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equippedItemConfig = bat.equippedItemConfig;
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break;
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case EquippedItem.box:
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if (boxPrefab.TryGetComponent(out IEquipped box))
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equippedItemConfig = box.equippedItemConfig;
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break;
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case EquippedItem.nothing:
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equippedItemConfig = default;
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break;
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}
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equippedItem = selectedItem;
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}
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[Command]
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public void CmdUseItem()
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{
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// equippedItemConfig is a struct SyncVar so this
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// is how to update it correctly on the server.
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EquippedItemConfig config = equippedItemConfig;
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config.Use();
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equippedItemConfig = config;
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// tell clients to invoke the Use method on the IEquipped object
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RpcUseItem();
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}
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[Command]
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public void CmdAddUsages(byte usages)
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{
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// equippedItemConfig is a struct SyncVar so this
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// is how to update it correctly on the server.
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EquippedItemConfig config = equippedItemConfig;
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config.AddUsages(usages);
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equippedItemConfig = config;
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// tell clients to invoke the AddUsages method on the IEquipped object
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RpcAddUsages(usages);
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}
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[Command]
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public void CmdResetUsages()
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{
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// equippedItemConfig is a struct SyncVar so this
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// is how to update it correctly on the server.
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EquippedItemConfig config = equippedItemConfig;
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config.ResetUsages();
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equippedItemConfig = config;
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// tell clients to invoke the ResetUsages method on the IEquipped object
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RpcResetUsages();
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}
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[Command]
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public void CmdResetUsages(byte usages)
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{
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// equippedItemConfig is a struct SyncVar so this
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// is how to update it correctly on the server.
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EquippedItemConfig config = equippedItemConfig;
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config.ResetUsages(usages);
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equippedItemConfig = config;
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// tell clients to invoke the ResetUsages method on the IEquipped object
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RpcResetUsages(usages);
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}
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[Command]
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void CmdDropItem()
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{
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// Instantiate the scene object on the server
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Vector3 pos = rightHand.transform.position;
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Quaternion rot = rightHand.transform.rotation;
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equippedObject = Instantiate(sceneObjectPrefab, pos, rot);
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// set the RigidBody as non-kinematic on the server only (isKinematic = true in prefab)
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equippedObject.GetComponent<Rigidbody>().isKinematic = false;
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SceneObject sceneObject = equippedObject.GetComponent<SceneObject>();
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// set the SyncVar on the scene object for clients to instantiate
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sceneObject.equippedItem = equippedItem;
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// set the equippedItemConfig for the iEquipped interface
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sceneObject.equippedItemConfig = equippedItemConfig;
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// set the direction to launch the scene object
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sceneObject.direction = rightHand.transform.forward;
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// Spawn the scene object on the network for all to see
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NetworkServer.Spawn(equippedObject);
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// set the player's SyncVar to nothing so clients will destroy the iEquipped child item
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equippedItem = EquippedItem.nothing;
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equippedItemConfig = default;
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}
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// public because it's called from a script on the SceneObject
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[Command]
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public void CmdPickupItem(GameObject obj)
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{
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if (obj.TryGetComponent(out SceneObject sceneObject))
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{
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// set the player's SyncVar so clients can show the iEquipped item
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equippedItem = sceneObject.equippedItem;
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// set the equippedItemConfig on the iEquipped object
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equippedItemConfig = sceneObject.equippedItemConfig;
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}
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// Destroy the scene object
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NetworkServer.Destroy(obj);
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}
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[ClientRpc]
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public void RpcUseItem()
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{
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// iEquipped could be null so use the null conditional operator
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iEquipped?.Use();
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}
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[ClientRpc]
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public void RpcAddUsages(byte usages)
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{
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// iEquipped could be null so use the null conditional operator
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iEquipped?.AddUsages(usages);
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}
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[ClientRpc]
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public void RpcResetUsages()
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{
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// iEquipped could be null so use the null conditional operator
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iEquipped?.ResetUsages();
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}
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[ClientRpc]
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public void RpcResetUsages(byte usages)
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{
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// iEquipped could be null so use the null conditional operator
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iEquipped?.ResetUsages(usages);
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}
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}
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}
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