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Assets/Mirror/Examples/TopDownShooter/Scripts/PlayerTopDown.cs
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338
Assets/Mirror/Examples/TopDownShooter/Scripts/PlayerTopDown.cs
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using Mirror;
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namespace Mirror.Examples.TopDownShooter
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{
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public class PlayerTopDown : NetworkBehaviour
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{
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public readonly static List<PlayerTopDown> playerList = new List<PlayerTopDown>();
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private Camera mainCamera;
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private CameraTopDown cameraTopDown;
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private CanvasTopDown canvasTopDown;
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public float moveSpeed = 5f;
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public CharacterController characterController;
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public GameObject leftFoot, rightFoot;
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private Vector3 previousPosition;
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private Quaternion previousRotation;
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[SyncVar(hook = nameof(OnFlashLightChanged))]
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public bool flashLightStatus = true;
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public Light flashLight;
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[SyncVar(hook = nameof(OnKillsChanged))]
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public int kills = 0;
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[SyncVar(hook = nameof(OnPlayerStatusChanged))]
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public int playerStatus = 0;
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public GameObject[] objectsToHideOnDeath;
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public float shootDistance = 100f;
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public LayerMask hitLayers;
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public GameObject muzzleFlash;
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public AudioSource soundGunShot, soundDeath, soundFlashLight, soundLeftFoot, soundRightFoot;
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#if !UNITY_SERVER
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public override void OnStartLocalPlayer()
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{
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// Grab and setup camera for local player only
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mainCamera = Camera.main;
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cameraTopDown = mainCamera.GetComponent<CameraTopDown>();
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cameraTopDown.playerTransform = this.transform;
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cameraTopDown.offset.y = 20.0f; // dramatic zoom out once players setup
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canvasTopDown.playerTopDown = this;
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// We want 3D audio effects to be around the player, not the camera 50 meters in the air
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// Otherwise it looks weird in-game, trust me
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mainCamera.GetComponent<AudioListener>().enabled = false;
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this.gameObject.AddComponent<AudioListener>();
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}
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#endif
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void Awake()
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{
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// Allow all players to run this, they may need it for reference
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#if UNITY_2022_2_OR_NEWER
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canvasTopDown = GameObject.FindAnyObjectByType<CanvasTopDown>();
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#else
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canvasTopDown = GameObject.FindObjectOfType<CanvasTopDown>();
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#endif
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}
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public void Start()
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{
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// If only server needs access to a player list, place the Add and Remove in public override void OnStartServer/OnStopServer
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playerList.Add(this);
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print("Player joined, total players: " + playerList.Count);
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#if !UNITY_SERVER
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if (isClient)
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{
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InvokeRepeating("AnimatePlayer", 0.2f, 0.2f);
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}
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#endif
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}
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public void OnDestroy()
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{
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playerList.Remove(this);
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print("Player removed, total players: " + playerList.Count);
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if (mainCamera) { mainCamera.GetComponent<AudioListener>().enabled = true; }
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}
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#if !UNITY_SERVER
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[ClientCallback]
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void Update()
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{
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if (!Application.isFocused) return;
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if (isOwned == false) { return; }
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if (playerStatus != 0) { return; } // make sure we are alive
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// Handle movement
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float moveHorizontal = Input.GetAxis("Horizontal");
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float moveVertical = Input.GetAxis("Vertical");
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Vector3 movement = new Vector3(moveHorizontal, 0f, moveVertical);
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if (movement.magnitude > 1f) movement.Normalize(); // Normalize to prevent faster diagonal movement
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characterController.Move(movement * moveSpeed * Time.deltaTime);
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RotatePlayerToMouse();
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if (Input.GetKeyUp(KeyCode.F))
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{
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// We could optionally call this locally too, to avoid minor delay in the command->sync var hook result
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CmdFlashLight();
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}
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// We currently have no shoot limiter, ideally thats a feature you would need to add.
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if (Input.GetMouseButtonDown(0))
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{
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Shoot();
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}
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}
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#endif
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#if !UNITY_SERVER
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[ClientCallback]
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void RotatePlayerToMouse()
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{
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Plane playerPlane = new Plane(Vector3.up, transform.position);
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Ray ray = mainCamera.ScreenPointToRay(Input.mousePosition);
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if (playerPlane.Raycast(ray, out float hitDist))
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{
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Vector3 targetPoint = ray.GetPoint(hitDist);
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Quaternion targetRotation = Quaternion.LookRotation(targetPoint - transform.position);
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transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, moveSpeed * Time.deltaTime);
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}
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}
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#endif
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#if !UNITY_SERVER
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[ClientCallback]
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void Shoot()
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{
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Ray ray = mainCamera.ScreenPointToRay(Input.mousePosition);
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RaycastHit hit;
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if (Physics.Raycast(ray, out hit, shootDistance, hitLayers))
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{
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//print("Hit: " + hit.collider.gameObject.name);
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canvasTopDown.shotMarker.transform.position = hit.point;
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if (hit.collider.gameObject.GetComponent<NetworkIdentity>() != null)
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{
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CmdShoot(hit.collider.gameObject);
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}
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else
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{
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CmdShoot(null);
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}
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}
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else
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{
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//print("Missed");
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}
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}
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#endif
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#if !UNITY_SERVER
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IEnumerator GunShotEffect()
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{
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soundGunShot.Play();
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muzzleFlash.SetActive(true);
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if (isLocalPlayer)
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{
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canvasTopDown.shotMarker.SetActive(true);
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}
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yield return new WaitForSeconds(0.1f);
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muzzleFlash.SetActive(false);
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if (isLocalPlayer)
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{
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canvasTopDown.shotMarker.SetActive(false);
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}
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}
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#endif
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[Command]
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public void CmdFlashLight()
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{
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flashLightStatus = !flashLightStatus;
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}
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// our sync var hook, which sets flashlight status to the same on all clients for this player
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void OnFlashLightChanged(bool _Old, bool _New)
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{
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#if !UNITY_SERVER
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Debug.Log($"OnFlashLightChanged: {_New}");
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flashLight.enabled = _New;
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soundFlashLight.Play();
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#endif
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}
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[Command]
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public void CmdShoot(GameObject target)
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{
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RpcShoot();
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if (target)
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{
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// you should check for a tag, not name contains
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// this is a quick workaround to make sure the example works without custom tags that may not be in your project
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if (target.name.Contains("Enemy"))
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{
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target.GetComponent<EnemyTopDown>().Kill();
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}
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else if (CompareTag("Player") == true) // Player tag exists in unity by default, so we should be good to use it here
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{
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// Make sure they are alive/dont shoot themself
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if (target.GetComponent<PlayerTopDown>().playerStatus != 0 || target == this.gameObject) { return; }
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target.GetComponent<PlayerTopDown>().Kill();
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}
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kills += 1; // update user kills sync var
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}
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}
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[ClientRpc]
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void RpcShoot()
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{
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#if !UNITY_SERVER
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StartCoroutine(GunShotEffect());
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#endif
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}
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// hook for sync var kills
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void OnKillsChanged(int _Old, int _New)
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{
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#if !UNITY_SERVER
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// all players get your latest kill data, however only local player updates their UI
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if (isLocalPlayer)
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{
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canvasTopDown.UpdateKillsUI(kills);
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}
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#endif
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}
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[ClientCallback]
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void AnimatePlayer()
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{
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#if !UNITY_SERVER
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// A simple way to change sprite animation, without networking it
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// If not moving or rotating, show no feet animation or sound, if moving, flick through footstep animations and sound effects.
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if (this.transform.position == previousPosition && Quaternion.Angle(this.transform.rotation, previousRotation) < 20.0f)
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{
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rightFoot.SetActive(false);
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leftFoot.SetActive(false);
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}
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else
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{
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if (rightFoot.activeInHierarchy)
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{
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leftFoot.SetActive(true);
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rightFoot.SetActive(false);
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soundLeftFoot.Play();
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}
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else
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{
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leftFoot.SetActive(false);
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rightFoot.SetActive(true);
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soundRightFoot.Play();
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}
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previousPosition = this.transform.position;
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previousRotation = this.transform.rotation;
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}
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#endif
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}
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[Command]
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public void CmdRespawnPlayer()
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{
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// We use a number playerStatus here, rather than bool, as you can use it for other things such as delayed respawn, respawn armour, spectating etc
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if (playerStatus == 0)
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{
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playerStatus = 1;
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}
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else
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{
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playerStatus = 0;
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}
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}
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// Our sync var hook for death and alive
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void OnPlayerStatusChanged(int _Old, int _New)
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{
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#if !UNITY_SERVER
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if (playerStatus == 0) // default/show
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{
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foreach (var obj in objectsToHideOnDeath)
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{
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obj.SetActive(true);
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}
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characterController.enabled = true;
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if (isLocalPlayer)
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{
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this.transform.position = NetworkManager.startPositions[Random.Range(0, NetworkManager.startPositions.Count)].position;
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canvasTopDown.buttonRespawnPlayer.gameObject.SetActive(false);
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}
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}
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else if (playerStatus == 1) // death
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{
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// have meshes hidden, disable movement and show respawn button
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foreach (var obj in objectsToHideOnDeath)
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{
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obj.SetActive(false);
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}
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characterController.enabled = false;
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if (isLocalPlayer)
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{
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canvasTopDown.buttonRespawnPlayer.gameObject.SetActive(true);
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}
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}
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// else if (playerStatus == 2) // can be used for other features, such as spectator, make local camera follow another player
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#endif
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}
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[ServerCallback]
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public void Kill()
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{
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//print("Kill Player");
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playerStatus = 1;
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RpcKill();
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}
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[ClientRpc]
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void RpcKill()
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{
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#if !UNITY_SERVER
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soundDeath.Play();
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GameObject splatter = Instantiate(canvasTopDown.deathSplatter, this.transform.position, this.transform.rotation);
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Destroy(splatter, 5.0f);
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#endif
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}
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}
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}
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