encompass-cs/encompass-cs/Entity.cs

using System;
using System.Collections.Generic;
using System.Linq;

namespace Encompass
{
    public struct Entity
    {
        public readonly Guid id;

        private readonly ComponentManager componentManager;

        internal Entity(Guid id, ComponentManager componentManager)
        {
            this.id = id;
            this.componentManager = componentManager;
        }

        public Guid AddComponent<TComponent>(TComponent component) where TComponent : struct, IComponent
        {
            return componentManager.AddComponent(id, component);
        }

        public Guid AddDrawComponent<TComponent>(TComponent component, int layer = 0) where TComponent : struct, IComponent
        {
            return componentManager.AddDrawComponent(id, component, layer);
        }

        public IEnumerable<KeyValuePair<Guid, TComponent>> GetComponents<TComponent>() where TComponent : struct, IComponent
        {
            return componentManager.GetComponentsByEntityAndType<TComponent>(id);
        }

        public KeyValuePair<Guid, TComponent> GetComponent<TComponent>() where TComponent : struct, IComponent
        {
            return GetComponents<TComponent>().First();
        }

        public bool HasComponent<TComponent>() where TComponent : struct, IComponent
        {
            return componentManager.EntityHasComponentOfType<TComponent>(id);
        }

        internal bool HasComponent(Type type)
        {
            return componentManager.EntityHasComponentOfType(id, type);
        }

        public void ActivateComponent(Guid componentID)
        {
            componentManager.MarkForActivation(componentID);
        }

        public void DeactivateComponent(Guid componentID)
        {
            componentManager.MarkForDeactivation(componentID);
        }

        public void RemoveComponent(Guid componentID)
        {
            componentManager.MarkForRemoval(componentID);
        }

        internal void RemoveAllComponents()
        {
            componentManager.RemoveAllComponentsFromEntity(id);
        }
    }
}