Struct BufferFromEntity<T>
Namespace: Unity.Entities
Syntax
[NativeContainer]
public struct BufferFromEntity<T>
where T : struct, IBufferElementDataType Parameters
| Name | Description |
|---|---|
| T |
Properties
Item[Entity]
Declaration
public DynamicBuffer<T> this[Entity entity] { get; }Parameters
| Type | Name | Description |
|---|---|---|
| Entity | entity |
Property Value
| Type | Description |
|---|---|
| DynamicBuffer<T> |
Methods
DidChange(Entity, UInt32)
Reports whether any of IBufferElementData components of the type T, in the chunk containing the specified Entity, could have changed.
Declaration
public bool DidChange(Entity entity, uint version)Parameters
| Type | Name | Description |
|---|---|---|
| Entity | entity | The entity. |
| UInt32 | version | The version to compare. In a system, this parameter should be set to the current LastSystemVersion at the time the job is run or scheduled. |
Returns
| Type | Description |
|---|---|
| Boolean | True, if the version number stored in the chunk for this component is more recent than the version
passed to the |
Remarks
Note that for efficiency, the change version applies to whole chunks not individual entities. The change version is incremented even when another job or system that has declared write access to a component does not actually change the component value.
HasComponent(Entity)
Reports whether the specified Entity instance still refers to a valid entity and that it has a buffer component of type T.
Declaration
public bool HasComponent(Entity entity)Parameters
| Type | Name | Description |
|---|---|---|
| Entity | entity | The entity. |
Returns
| Type | Description |
|---|---|
| Boolean | True if the entity has a buffer component of type T, and false if it does not. Also returns false if the Entity instance refers to an entity that has been destroyed. |
Remarks
To report if the provided entity has a buffer component of type T, this function confirms whether the EntityArchetype of the provided entity includes buffer components of type T.