moved the particle system and the entity component system into their own nuget packages

2026-07-26 00:45:20 +00:00 · 2017-03-07 22:08:31 +10:00
parent 1b6df14681
commit c236e6dfd5
71 changed files with 422 additions and 83 deletions
@@ -0,0 +1,70 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.Xna.Framework;
+using MonoGame.Extended.Entities.Components;
+
+namespace MonoGame.Extended.Entities.Systems
+{
+    public abstract class ComponentSystem
+    {
+        private EntityComponentSystem _parent;
+
+        protected ComponentSystem()
+        {
+        }
+
+        internal EntityComponentSystem Parent
+        {
+            get { return _parent; }
+            set
+            {
+                if (_parent != null)
+                    throw new InvalidOperationException("ComponentSystem already registered");
+
+                _parent = value;
+
+                if (_parent != null)
+                {
+                    _parent.EntityCreated += (sender, entity) => OnEntityCreated(entity);
+                    _parent.EntityDestroyed += (sender, entity) => OnEntityDestroyed(entity);
+                    _parent.ComponentAttached += (sender, component) => OnComponentAttached(component);
+                    _parent.ComponentDetached += (sender, component) => OnComponentDetached(component);
+                }
+            }
+        }
+
+        protected IEnumerable<T> GetComponents<T>() where T : EntityComponent
+        {
+            return Parent.GetComponents<T>();
+        }
+
+        protected Entity GetEntity(string name)
+        {
+            return Parent.GetEntity(name);
+        }
+
+        protected virtual void OnEntityCreated(Entity entity)
+        {
+        }
+
+        protected virtual void OnEntityDestroyed(Entity entity)
+        {
+        }
+
+        protected virtual void OnComponentAttached(EntityComponent component)
+        {
+        }
+
+        protected virtual void OnComponentDetached(EntityComponent component)
+        {
+        }
+
+        public virtual void Update(GameTime gameTime)
+        {
+        }
+
+        public virtual void Draw(GameTime gameTime)
+        {
+        }
+    }
+}