..
  This is auto generated file. See daBfg/api/das/docs

.. _stdlib_resource_slot:

====================
das中的资源槽
====================

存储在 :ref:`das+ecs <stdlib_resource_slot_ecs>` 中更方便。

不过，我们可以使用 `daBfg.resource_slot` 模块在 ecs 之外存储 :ref:`NodeHandleWithSlotsAccess <handle-ResourceSlotCore-NodeHandleWithSlotsAccess>` 。

遗憾的是，NodeHandleWithSlotsAccess 无法存储在本地 das 变量中，因为 das 不会调用本地类型的析构函数。
如果真的需要在 ecs 外部存储句柄，就必须在堆中存储句柄，或在 cpp 端绑定存储句柄。

对于 :ref:`ecs <stdlib_resource_slot_ecs>` 内的节点，热重载也会自动工作。

.. code-block:: das

  require daBfg.resource_slot

  some_cpp_binding <| $(var handle : NodeHandleWithSlotsAccess &)
    some_struct.handle <- root() |> registerAccess("node_name", [[SlotActions update <- [{auto Update("slot_name", "texture_name", 100)}] ]]) <| @(slots_state; var registry : Registry)

      return <- @ <|
        // some render code


+++++++++
Constants
+++++++++

.. _global-resource_slot-DEFAULT_READ_PRIORITY:

.. das:attribute:: DEFAULT_READ_PRIORITY = 2147483647

|variable-resource_slot-DEFAULT_READ_PRIORITY|

.. _struct-resource_slot-Create:

.. das:attribute:: Create



Create fields are

+--------+------+
+slot    +string+
+--------+------+
+resource+string+
+--------+------+


|structure-resource_slot-Create|

.. _struct-resource_slot-Update:

.. das:attribute:: Update



Update fields are

+--------+------+
+slot    +string+
+--------+------+
+resource+string+
+--------+------+
+priority+int   +
+--------+------+


|structure-resource_slot-Update|

.. _struct-resource_slot-Read:

.. das:attribute:: Read



Read fields are

+--------+------+
+slot    +string+
+--------+------+
+priority+int   +
+--------+------+


|structure-resource_slot-Read|

.. _struct-resource_slot-SlotActions:

.. das:attribute:: SlotActions



SlotActions fields are

+------+-------------------------------------------------------------------+
+create+array< :ref:`resource_slot::Create <struct-resource_slot-Create>` >+
+------+-------------------------------------------------------------------+
+update+array< :ref:`resource_slot::Update <struct-resource_slot-Update>` >+
+------+-------------------------------------------------------------------+
+read  +array< :ref:`resource_slot::Read <struct-resource_slot-Read>` >    +
+------+-------------------------------------------------------------------+


|structure-resource_slot-SlotActions|

+++++++++++++++
Register access
+++++++++++++++

  *  :ref:`registerAccess (self:daBfg::NameSpace -const;name:string const;slot_decl:resource_slot::SlotActions const;declaration_callback:lambda\<(slots_state:ResourceSlotCore::State const;var reg:daBfg::Registry -const):lambda\<void\>\> -const) : ResourceSlotCore::NodeHandleWithSlotsAccess <function-_at_resource_slot_c__c_registerAccess_S_ls_daBfg_c__c_NameSpace_gr__Cs_CS_ls_resource_slot_c__c_SlotActions_gr__N_ls_slots_state;reg_gr_0_ls_CH_ls_ResourceSlotCore_c__c_State_gr_;S_ls_daBfg_c__c_Registry_gr__gr_1_ls_1_ls_v_gr__at__gr__at_>` 

.. _function-_at_resource_slot_c__c_registerAccess_S_ls_daBfg_c__c_NameSpace_gr__Cs_CS_ls_resource_slot_c__c_SlotActions_gr__N_ls_slots_state;reg_gr_0_ls_CH_ls_ResourceSlotCore_c__c_State_gr_;S_ls_daBfg_c__c_Registry_gr__gr_1_ls_1_ls_v_gr__at__gr__at_:

.. das:function:: registerAccess(self: NameSpace; name: string const; slot_decl: SlotActions const; declaration_callback: lambda<(slots_state:ResourceSlotCore::State const;var reg:daBfg::Registry -const):lambda<void>>)

registerAccess returns  :ref:`ResourceSlotCore::NodeHandleWithSlotsAccess <handle-ResourceSlotCore-NodeHandleWithSlotsAccess>` 

+--------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------+
+argument            +argument type                                                                                                                                             +
+====================+==========================================================================================================================================================+
+self                + :ref:`daBfg::NameSpace <struct-daBfg-NameSpace>`                                                                                                         +
+--------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------+
+name                +string const                                                                                                                                              +
+--------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------+
+slot_decl           + :ref:`resource_slot::SlotActions <struct-resource_slot-SlotActions>`  const                                                                              +
+--------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------+
+declaration_callback+lambda<(slots_state: :ref:`ResourceSlotCore::State <handle-ResourceSlotCore-State>`  const;reg: :ref:`daBfg::Registry <struct-daBfg-Registry>` ):lambda<>>+
+--------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------+


|function-resource_slot-registerAccess|