Added Event Pipeline System

2025-04-18 21:54:07 +02:00
parent b4d5afc4ba
commit 08f66af16e
52 changed files with 1368 additions and 197 deletions
@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Firebird2D.EventPipelines
+{
+    public class EventBus
+    {
+        private Dictionary<FirebirdEvent, I_Pipeline> pipelines = new();
+
+        private Dictionary<FirebirdEvent, List<Action<I_Pipeline>>> pendingHooks = new();
+
+        public void OnPipelineExists<T>(Action<I_Pipeline> callback, FirebirdEvent type)
+        {
+            if (callback == null) throw new ArgumentNullException(nameof(callback));
+
+            if (!pendingHooks.TryGetValue(type, out var hookList))
+            {
+                hookList = new();
+                pendingHooks[type] = hookList;
+            }
+
+            hookList.Add(callback);
+        }
+
+        public I_Pipeline GetOrBuildPipeline(FirebirdEvent type, Type argsType, object master)
+        {
+            if (pipelines.TryGetValue(type, out var pipeline)) return pipeline;
+
+            var genericPipelineType = typeof(Pipeline<>).MakeGenericType(argsType);
+            var pipelineInstance = (I_Pipeline)Activator.CreateInstance(genericPipelineType, master)!;
+            pipelines[type] = pipelineInstance;
+            return pipelineInstance;
+        }
+
+        public I_Pipeline? GetPipeline(FirebirdEvent type, Type argsType)
+        {
+            if (!pipelines.TryGetValue(type, out var pipeline)) return null;
+            return pipeline;
+        }
+
+        public void DestroyPipeline(FirebirdEvent type, object master)
+        {
+            if (!pipelines.ContainsKey(type)) return;
+            if (!pipelines[type].PipelineMaster.Equals(master)) throw new InvalidDataException("Only the pipeline master is allowed to delete this pipeline.");
+            pipelines.Remove(type);
+        }
+    }
+}