void BuildEntitiesFromScene(UnityContext contextHolder)
{
//An EntityDescriptorHolder is a special Svelto.ECS class created to exploit
//GameObjects to dynamically retrieve the Entity information attached to it.
//Basically a GameObject can be used to hold all the information needed to create
//an Entity and later queries to build the entitity itself.
//This allow to trigger a sort of polyformic code that can be re-used to
//create several type of entities.
IEntityDescriptorHolder[] entities = contextHolder.GetComponentsInChildren <IEntityDescriptorHolder>();
//However this common pattern in Svelto.ECS application exists to automatically
//create entities from gameobjects already presented in the scene.
//I still suggest to avoid this method though and create entities always
//manually. Basically EntityDescriptorHolder should be avoided
//whenver not strictly necessary.
for (int i = 0; i < entities.Length; i++)
{
var entityDescriptorHolder = entities[i];
var entityDescriptor = entityDescriptorHolder.RetrieveDescriptor();
_entityFactory.BuildEntity
(((MonoBehaviour)entityDescriptorHolder).gameObject.GetInstanceID(),
entityDescriptor,
(entityDescriptorHolder as MonoBehaviour).GetComponentsInChildren <IImplementor>());
}
}
public void OnContextCreated(UnityContext contextHolder)
{
IEntityDescriptorHolder[] entities = contextHolder.GetComponentsInChildren <IEntityDescriptorHolder>();
for (int i = 0; i < entities.Length; i++)
{
_entityFactory.BuildEntity((entities[i] as MonoBehaviour).gameObject.GetInstanceID(), entities[i].BuildDescriptorType());
}
}
void BuildBonusSpawnerEntity(UnityContext contextHolder)
{
var spawners = contextHolder.GetComponentsInChildren <BonusSpawnerImplementor>();
foreach (var spawner in spawners)
{
List <IImplementor> implementors = new List <IImplementor>();
spawner.GetComponents(implementors);
_entityFactory.BuildEntity <BonusSpawnerEntityDescriptor>(spawner.GetInstanceID(), implementors.ToArray());
}
}
private void BuildGridFromScene(UnityContext unityContext, IEntityFactory entityFactory)
{
var entities = unityContext.GetComponentsInChildren <IEntityDescriptorHolder>();
foreach (var entityHolder in entities)
{
entityFactory.BuildEntity(
new EGID((uint)((MonoBehaviour)entityHolder).gameObject.GetInstanceID(), EcsGroups.GridGroup),
entityHolder.GetDescriptor(),
((MonoBehaviour)entityHolder).GetComponents <IImplementor>()
);
}
}
void BuildEntitiesFromScene(UnityContext contextHolder)
{
IEntityDescriptorHolder[] entities = contextHolder.GetComponentsInChildren <IEntityDescriptorHolder>();
for (int i = 0; i < entities.Length; i++)
{
var entityDescriptorHolder = entities[i];
var entityViewsToBuild = entityDescriptorHolder.GetEntitiesToBuild();
_entityFactory.BuildEntity
(((MonoBehaviour)entityDescriptorHolder).gameObject.GetInstanceID(),
entityViewsToBuild,
(entityDescriptorHolder as MonoBehaviour).GetComponentsInChildren <IImplementor>());
}
}
/// <summary>
/// This is a possible approach to create Entities from already existing GameObject in the scene
/// It is absolutely not necessary and I wouldn't rely on this in production
/// </summary>
/// <param name="contextHolder"></param>
void BuildEntitiesFromScene(UnityContext contextHolder)
{
//An EntityDescriptorHolder is a special Svelto.ECS class created to exploit GameObjects to dynamically
//retrieve implementors attached to it and then build a Svelto Entity.
var entities = contextHolder.GetComponentsInChildren <IEntityDescriptorHolder>();
//This pattern is usually useful for guis where complex hierarchy of gameobjects are necessary, but
//otherwise you should always create entities in factories. A Better GUI only example is necessary
for (var i = 0; i < entities.Length; i++)
{
var entityDescriptorHolder = entities[i];
var entityViewsToBuild = entityDescriptorHolder.GetDescriptor();
_entityFactory
.BuildEntity(
new EGID((uint)((MonoBehaviour)entityDescriptorHolder).gameObject.GetInstanceID(),
ECSGroups.ExtraStuff), entityViewsToBuild,
(entityDescriptorHolder as MonoBehaviour).GetComponentsInChildren <IImplementor>());
}
}
public void OnContextCreated(UnityContext contextHolder)
{
IEntityDescriptorHolder[] entities = contextHolder.GetComponentsInChildren <IEntityDescriptorHolder>();
foreach (IEntityDescriptorHolder entity in entities)
{
IEntityDescriptorInfo entityInfo = entity.RetrieveDescriptor();
m_EntityFactory.BuildEntity(((MonoBehaviour)entity).gameObject.GetInstanceID(), entityInfo,
(entity as MonoBehaviour).GetComponentsInChildren <IImplementor>());
}
GameObject player = Camera.main.gameObject;
List <IImplementor> implementors = new List <IImplementor>();
player.GetComponents(implementors);
implementors.Add(new PlayerInputImplementor());
m_EntityFactory.BuildEntity <PlayerEntity>(player.GetInstanceID(), implementors.ToArray());
}
void BuildEntitiesFromScene(UnityContext contextHolder)
{
//An EntityDescriptorHolder is a special Svelto.ECS class created to exploit
//GameObjects to dynamically retrieve the Entity information attached to it.
//Basically a GameObject can be used to hold all the information needed to create
//an Entity and later queries to build the entitity itself.
//This allow to trigger a sort of polyformic code that can be re-used to
//create several type of entities.
IEntityDescriptorHolder[] entities = contextHolder.GetComponentsInChildren <IEntityDescriptorHolder>();
for (int i = 0; i < entities.Length; i++)
{
var entityDescriptorHolder = entities[i];
var entityDescriptor = entityDescriptorHolder.RetrieveDescriptor();
_entityFactory.BuildEntity
(((MonoBehaviour)entityDescriptorHolder).gameObject.GetInstanceID(),
entityDescriptor,
(entityDescriptorHolder as MonoBehaviour).GetComponentsInChildren <IImplementor>());
}
}
void ICompositionRoot.OnContextCreated(UnityContext contextHolder)
{
#if FIRST_TIER_EXAMPLE || SECOND_TIER_EXAMPLE || THIRD_TIER_EXAMPLE || FOURTH_TIER_EXAMPLE
var tasksCount = NumberOfEntities.value;
#if DONT_TRY_THIS_AT_HOME
for (int i = 0; i < tasksCount; i++)
{
GameObject crazyness = new GameObject();
crazyness.AddComponent <UnityWay>();
}
#else
_enginesRoot = new EnginesRoot(new Schedulers.Unity.UnitySumbmissionEntityViewScheduler());
IEntityFactory entityFactory = _enginesRoot.GenerateEntityFactory();
var boidsEngine = new BoidsEngine();
_enginesRoot.AddEngine(boidsEngine);
_contextNotifier.AddFrameworkDestructionListener(boidsEngine);
#if FIRST_TIER_EXAMPLE || SECOND_TIER_EXAMPLE || THIRD_TIER_EXAMPLE
var implementorArray = new object[1];
#endif
for (int i = 0; i < tasksCount; i++)
{
#if FIRST_TIER_EXAMPLE || SECOND_TIER_EXAMPLE || THIRD_TIER_EXAMPLE
implementorArray[0] = new Boid();
entityFactory.BuildEntity <BoidEntityDescriptor>(i, implementorArray);
#else
entityFactory.BuildEntity <BoidEntityDescriptor>(i);
#endif
}
entityFactory.BuildEntity <GUITextEntityDescriptor>(0,
contextHolder.GetComponentsInChildren <PrintIteration>());
#endif
#endif
}
