Start EventManager

Assets/Scripts/GameSystems/ClientManager.cs

@@ -27,6 +27,7 @@ public sealed class ClientManager : MonoBehaviour
     float maxTimeNewClients = 2.0f; //Longest waiting time for new clients
     bool clientSpawnReady = false;
 
+    [SerializeField]
     string ClientRessourceFolder = "Clients";
     private Object[] clients;
     GameObject ClientContainer = null;

Assets/Scripts/GameSystems/EventManager.cs

@@ -0,0 +1,105 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.AI;
+
+//Define the system managing the events. (Singleton)
+public sealed class EventManager : MonoBehaviour
+{
+    //Singleton
+    private static EventManager _instance=null;
+    public static EventManager Instance { get 
+        { 
+        if(_instance is null)
+            Debug.LogError("Missing EventManager instance");
+        return _instance; 
+        } 
+    }
+
+    [HideInInspector]
+    public bool ready = false; //Wether the ClientManager is initialized
+
+    [SerializeField]
+    float SpawnRange = 1.0f;
+    [SerializeField]
+    int nbMaxEvents = 1; //Maximum active clients
+    [SerializeField]
+    float eventSpawnTimer = 0.5f; //Intial time before first spawn (pseudo-random after that)
+    [SerializeField]
+    float maxTimeNewEvents = 2.0f; //Longest waiting time for new clients
+    bool eventSpawnReady = false;
+
+    [SerializeField]
+    string EventRessourceFolder = "Events";
+    private Object[] events;
+    GameObject EventContainer=null;
+    List<int> eventIDs = new List<int>();
+
+    //Try to find a random point on NavMesh inside a range circle. A result would at a maximum distance of 2*range. 
+    bool RandomPoint(Vector3 center, float range, out Vector3 result)
+    {
+        for (int i = 0; i < 50; i++)
+        {
+            Vector3 randomPoint = center + (Vector3)Random.insideUnitCircle * range;
+            NavMeshHit hit;
+            if (NavMesh.SamplePosition(randomPoint, out hit, range, NavMesh.AllAreas))
+            {
+                result = hit.position;
+                return true;
+            }
+        }
+        result = Vector3.zero;
+        return false;
+    }
+
+    public void spawnEvent(Vector3 position)
+    {
+        Vector3 spawnPoint;
+        if (eventSpawnReady && eventIDs.Count<nbMaxEvents && RandomPoint(position, SpawnRange, out spawnPoint))
+        {
+            Debug.DrawRay(spawnPoint, Vector3.up, Color.blue, 2.0f);
+            int prefabChoice = Random.Range(0, events.Length);
+            GameObject newEvent = Instantiate((GameObject)events[prefabChoice], spawnPoint, Quaternion.identity, EventContainer.transform); //Instantiate new event inside ClientManager
+            eventIDs.Add(newEvent.GetInstanceID()); //Save ID
+            newEvent.name = newEvent.name.Split('(')[0]+eventIDs[eventIDs.Count-1]; //Rename new client
+
+            eventSpawnTimer=Random.Range(1.0f, maxTimeNewEvents); //Need more random ?
+            eventSpawnReady=false;
+        }
+    }
+    //Awake is called when the script instance is being loaded.
+    void Awake()
+    {
+        //Singleton
+        if (_instance != null && _instance != this)
+            Destroy(this.gameObject);
+        else
+            _instance = this;
+        
+        if(!ready)
+        {
+            EventContainer = GameObject.Find("/GameSystem/EventManager");
+            if (EventContainer is null)
+                throw new System.Exception("No EventManager found under GameSystem");
+
+            events = Resources.LoadAll(EventRessourceFolder);
+            if (events.Length==0)
+            {
+                Debug.LogWarning("EventManager didn't find events prefab in ressource folder : "+EventRessourceFolder);
+            }
+
+            ready = true;
+        }
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        if(!eventSpawnReady)
+        {
+            eventSpawnTimer-= Time.deltaTime;
+            if(eventSpawnTimer<=0)
+                eventSpawnReady=true;
+        }
+    }
+}

Assets/Scripts/GameSystems/EventManager.cs.meta

@@ -0,0 +1,11 @@
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+guid: 71c5cbaefd379ae48875ee243e0435c9
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
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