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# Ogre::ResourceGroupManager Class Reference

This singleton class manages the list of resource groups, and notifying the various resource managers of their obligations to load / unload resources in a group. More...

`#include <OgreResourceGroupManager.h>`

Inheritance diagram for Ogre::ResourceGroupManager:
[legend]

List of all members.

## Public Types
typedef std::list < ResourceDeclaration > | ResourceDeclarationList
| List of resource declarations.
typedef std::map < String, ResourceManager * > | ResourceManagerMap
typedef MapIterator < ResourceManagerMap > | ResourceManagerIterator
## Public Member Functions
| ResourceGroupManager ()
virtual | ~ResourceGroupManager ()
void | createResourceGroup (const String &name)
| Create a resource group.
void | initialiseResourceGroup (const String &name)
| Initialises a resource group.
void | initialiseAllResourceGroups (void)
| Initialise all resource groups which are yet to be initialised.
void | loadResourceGroup (const String &name, bool loadMainResources=true, bool loadWorldGeom=true)
| Loads a resource group.
void | unloadResourceGroup (const String &name, bool reloadableOnly=true)
| Unloads a resource group.
void | unloadUnreferencedResourcesInGroup (const String &name, bool reloadableOnly=true)
| Unload all resources which are not referenced by any other object.
void | clearResourceGroup (const String &name)
| Clears a resource group.
void | destroyResourceGroup (const String &name)
| Destroys a resource group, clearing it first, destroying the resources which are part of it, and then removing it from the list of resource groups.
void | addResourceLocation (const String &name, const String &locType, const String &resGroup=DEFAULT_RESOURCE_GROUP_NAME, bool recursive=false)
| Method to add a resource location to for a given resource group.
void | removeResourceLocation (const String &name, const String &resGroup=DEFAULT_RESOURCE_GROUP_NAME)
| Removes a resource location from the search path.
void | declareResource (const String &name, const String &resourceType, const String &groupName=DEFAULT_RESOURCE_GROUP_NAME, const NameValuePairList &loadParameters=NameValuePairList())
| Declares a resource to be a part of a resource group, allowing you to load and unload it as part of the group.
void | declareResource (const String &name, const String &resourceType, const String &groupName, ManualResourceLoader *loader, const NameValuePairList &loadParameters=NameValuePairList())
| Declares a resource to be a part of a resource group, allowing you to load and unload it as part of the group.
void | undeclareResource (const String &name, const String &groupName)
| Undeclare a resource.
DataStreamPtr | openResource (const String &resourceName, const String &groupName=DEFAULT_RESOURCE_GROUP_NAME, bool searchGroupsIfNotFound=true, Resource *resourceBeingLoaded=0)
| Open a single resource by name and return a DataStream pointing at the source of the data.
DataStreamListPtr | openResources (const String &pattern, const String &groupName=DEFAULT_RESOURCE_GROUP_NAME)
| Open all resources matching a given pattern (which can contain the character '*' as a wildcard), and return a collection of DataStream objects on them.
StringVectorPtr | listResourceNames (const String &groupName, bool dirs=false)
| List all file or directory names in a resource group.
FileInfoListPtr | listResourceFileInfo (const String &groupName, bool dirs=false)
| List all files in a resource group with accompanying information.
StringVectorPtr | findResourceNames (const String &groupName, const String &pattern, bool dirs=false)
| Find all file or directory names matching a given pattern in a resource group.
bool | resourceExists (const String &group, const String &filename)
| Find out if the named file exists in a group.
bool | resourceExists (ResourceGroup *group, const String &filename)
| Find out if the named file exists in a group.
const String & | findGroupContainingResource (const String &filename)
| Find the group in which a resource exists.
FileInfoListPtr | findResourceFileInfo (const String &group, const String &pattern, bool dirs=false)
| Find all files or directories matching a given pattern in a group and get some detailed information about them.
void | addResourceGroupListener (ResourceGroupListener *l)
| Adds a ResourceGroupListener which will be called back during resource loading events.
void | removeResourceGroupListener (ResourceGroupListener *l)
| Removes a ResourceGroupListener.
void | setWorldResourceGroupName (const String &groupName)
| Sets the resource group that 'world' resources will use.
const String & | getWorldResourceGroupName (void) const
| Gets the resource group that 'world' resources will use.
void | linkWorldGeometryToResourceGroup (const String &group, const String &worldGeometry, SceneManager *sceneManager)
| Associates some world geometry with a resource group, causing it to be loaded / unloaded with the resource group.
void | unlinkWorldGeometryFromResourceGroup (const String &group)
| Clear any link to world geometry from a resource group.
void | shutdownAll (void)
| Shutdown all ResourceManagers, performed as part of clean-up.
void | _registerResourceManager (const String &resourceType, ResourceManager *rm)
| Internal method for registering a ResourceManager (which should be a singleton).
void | _unregisterResourceManager (const String &resourceType)
| Internal method for unregistering a ResourceManager.
ResourceManagerIterator | getResourceManagerIterator ()
| Get an iterator over the registered resource managers.
void | _registerScriptLoader (ScriptLoader *su)
| Internal method for registering a ScriptLoader.
void | _unregisterScriptLoader (ScriptLoader *su)
| Internal method for unregistering a ScriptLoader.
ResourceManager * | _getResourceManager (const String &resourceType)
| Internal method for getting a registered ResourceManager.
void | _notifyResourceCreated (ResourcePtr &res)
| Internal method called by ResourceManager when a resource is created.
void | _notifyResourceRemoved (ResourcePtr &res)
| Internal method called by ResourceManager when a resource is removed.
void | _notifyResourceGroupChanged (const String &oldGroup, Resource *res)
| Internale method to notify the group manager that a resource has changed group (only applicable for autodetect group).
void | _notifyAllResourcesRemoved (ResourceManager *manager)
| Internal method called by ResourceManager when all resources for that manager are removed.
void | _notifyWorldGeometryStageStarted (const String &description)
| Notify this manager that one stage of world geometry loading has been started.
void | _notifyWorldGeometryStageEnded (void)
| Notify this manager that one stage of world geometry loading has been completed.
StringVector | getResourceGroups (void)
| Get a list of the currently defined resource groups.
ResourceDeclarationList | getResourceDeclarationList (const String &groupName)
| Get the list of resource declarations for the specified group name.
## Static Public Member Functions
static ResourceGroupManager & | getSingleton (void)
| Override standard Singleton retrieval.
static ResourceGroupManager * | getSingletonPtr (void)
| Override standard Singleton retrieval.
## Static Public Attributes
static OGRE_AUTO_MUTEX String | DEFAULT_RESOURCE_GROUP_NAME
| Default resource group name.
static String | INTERNAL_RESOURCE_GROUP_NAME
| Internal resource group name (should be used by OGRE internal only).
static String | BOOTSTRAP_RESOURCE_GROUP_NAME
| Bootstrap resource group name (min OGRE resources).
static String | AUTODETECT_RESOURCE_GROUP_NAME
| Special resource group name which causes resource group to be automatically determined based on searching for the resource in all groups.
static size_t | RESOURCE_SYSTEM_NUM_REFERENCE_COUNTS
| The number of reference counts held per resource by the resource system.
## Protected Types
typedef std::multimap< Real, ScriptLoader * > | ScriptLoaderOrderMap
| Map of loading order (Real) to ScriptLoader, used to order script parsing.
typedef std::vector < ResourceGroupListener * > | ResourceGroupListenerList
typedef std::map < String, Archive * > | ResourceLocationIndex
| Resource index entry, resourcename->location.
typedef std::list < ResourceLocation * > | LocationList
| List of possible file locations.
typedef std::list < ResourcePtr > | LoadUnloadResourceList
| List of resources which can be loaded / unloaded.
typedef std::map < String, ResourceGroup * > | ResourceGroupMap
| Map from resource group names to groups.
## Protected Member Functions
void | parseResourceGroupScripts (ResourceGroup *grp)
| Parses all the available scripts found in the resource locations for the given group, for all ResourceManagers.
void | createDeclaredResources (ResourceGroup *grp)
| Create all the pre-declared resources.
void | addCreatedResource (ResourcePtr &res, ResourceGroup &group)
| Adds a created resource to a group.
ResourceGroup * | getResourceGroup (const String &name)
| Get resource group.
void | dropGroupContents (ResourceGroup *grp)
| Drops contents of a group, leave group there, notify ResourceManagers.
void | deleteGroup (ResourceGroup *grp)
| Delete a group for shutdown - don't notify ResourceManagers.
ResourceGroup * | findGroupContainingResourceImpl (const String &filename)
| Internal find method for auto groups.
void | fireResourceGroupScriptingStarted (const String &groupName, size_t scriptCount)
| Internal event firing method.
void | fireScriptStarted (const String &scriptName)
| Internal event firing method.
void | fireScriptEnded (const String &scriptName)
| Internal event firing method.
void | fireResourceGroupScriptingEnded (const String &groupName)
| Internal event firing method.
void | fireResourceGroupLoadStarted (const String &groupName, size_t resourceCount)
| Internal event firing method.
void | fireResourceStarted (const ResourcePtr &resource)
| Internal event firing method.
void | fireResourceEnded (void)
| Internal event firing method.
void | fireResourceGroupLoadEnded (const String &groupName)
| Internal event firing method.
## Protected Attributes
ResourceManagerMap | mResourceManagerMap
| Map of resource types (strings) to ResourceManagers, used to notify them to load / unload group contents.
ScriptLoaderOrderMap | mScriptLoaderOrderMap
ResourceGroupListenerList | mResourceGroupListenerList
ResourceGroupMap | mResourceGroupMap
String | mWorldGroupName
| Group name for world resources.
ResourceGroup * | mCurrentGroup
| Stored current group - optimisation for when bulk loading a group.
## Static Protected Attributes
static T * | ms_Singleton
## Classes
struct | ResourceDeclaration
| Nested struct defining a resource declaration. More...
struct | ResourceGroup
| Resource group entry. More...
struct | ResourceLocation
| Resource location entry. More...

## Detailed Description

This singleton class manages the list of resource groups, and notifying the various resource managers of their obligations to load / unload resources in a group.

It also provides facilities to monitor resource loading per group (to do progress bars etc), provided the resources that are required are pre-registered.

  Defining new resource groups, and declaring the resources you intend to use in advance is optional, however it is a very useful feature. In addition, if a ResourceManager supports the definition of resources through scripts, then this is the class which drives the locating of the scripts and telling the ResourceManager to parse them.

  There are several states that a resource can be in (the concept, not the object instance in this case):
  1. Undefined. Nobody knows about this resource yet. It might be in the filesystem, but Ogre is oblivious to it at the moment - there is no Resource instance. This might be because it's never been declared (either in a script, or using ResourceGroupManager::declareResource), or it may have previously been a valid Resource instance but has been removed, either individually through ResourceManager::remove or as a group through ResourceGroupManager::clearResourceGroup.
  2. Declared. Ogre has some forewarning of this resource, either through calling ResourceGroupManager::declareResource, or by declaring the resource in a script file which is on one of the resource locations which has been defined for a group. There is still no instance of Resource, but Ogre will know to create this resource when ResourceGroupManager::initialiseResourceGroup is called (which is automatic if you declare the resource group before Root::initialise).
  3. Unloaded. There is now a Resource instance for this resource, although it is not loaded. This means that code which looks for this named resource will find it, but the Resource is not using a lot of memory because it is in an unloaded state. A Resource can get into this state by having just been created by ResourceGroupManager::initialiseResourceGroup (either from a script, or from a call to declareResource), by being created directly from code (ResourceManager::create), or it may have previously been loaded and has been unloaded, either individually through Resource::unload, or as a group through ResourceGroupManager::unloadResourceGroup.
  4. LoadedThe Resource instance is fully loaded. This may have happened implicitly because something used it, or it may have been loaded as part of a group.

See also:
  ResourceGroupManager::declareResource

  ResourceGroupManager::initialiseResourceGroup

  ResourceGroupManager::loadResourceGroup

  ResourceGroupManager::unloadResourceGroup

  ResourceGroupManager::clearResourceGroup

Definition at line 171 of file OgreResourceGroupManager.h.

## Member Typedef Documentation

typedef std::list<ResourceDeclaration> Ogre::ResourceGroupManager::ResourceDeclarationList

List of resource declarations.

Definition at line 194 of file OgreResourceGroupManager.h.

typedef std::map<String, ResourceManager*> Ogre::ResourceGroupManager::ResourceManagerMap

Definition at line 195 of file OgreResourceGroupManager.h.

typedef MapIterator<ResourceManagerMap> Ogre::ResourceGroupManager::ResourceManagerIterator

Definition at line 196 of file OgreResourceGroupManager.h.

typedef std::multimap<Real, ScriptLoader*> Ogre::ResourceGroupManager::ScriptLoaderOrderMap`[protected]`

Map of loading order (Real) to ScriptLoader, used to order script parsing.

Definition at line 202 of file OgreResourceGroupManager.h.

typedef std::vector<ResourceGroupListener*> Ogre::ResourceGroupManager::ResourceGroupListenerList`[protected]`

Definition at line 205 of file OgreResourceGroupManager.h.

typedef std::map<String, Archive*> Ogre::ResourceGroupManager::ResourceLocationIndex`[protected]`

Resource index entry, resourcename->location.

Definition at line 209 of file OgreResourceGroupManager.h.

typedef std::list<ResourceLocation*> Ogre::ResourceGroupManager::LocationList`[protected]`

List of possible file locations.

Definition at line 220 of file OgreResourceGroupManager.h.

typedef std::list<ResourcePtr> Ogre::ResourceGroupManager::LoadUnloadResourceList`[protected]`

List of resources which can be loaded / unloaded.

Definition at line 222 of file OgreResourceGroupManager.h.

typedef std::map<String, ResourceGroup*> Ogre::ResourceGroupManager::ResourceGroupMap`[protected]`

Map from resource group names to groups.

Definition at line 261 of file OgreResourceGroupManager.h.

## Constructor & Destructor Documentation

Ogre::ResourceGroupManager::ResourceGroupManager | ( |  | ) |

virtual Ogre::ResourceGroupManager::~ResourceGroupManager | ( |  | ) | `[virtual]`

## Member Function Documentation

void Ogre::ResourceGroupManager::parseResourceGroupScripts | ( | ResourceGroup * | grp | ) | `[protected]`

Parses all the available scripts found in the resource locations for the given group, for all ResourceManagers.

Remarks:
  Called as part of initialiseResourceGroup

void Ogre::ResourceGroupManager::createDeclaredResources | ( | ResourceGroup * | grp | ) | `[protected]`

Create all the pre-declared resources.

Remarks:
  Called as part of initialiseResourceGroup

void Ogre::ResourceGroupManager::addCreatedResource | ( | ResourcePtr & | res,
|  | ResourceGroup & | group |
| ) |  |  | `[protected]`

Adds a created resource to a group.

ResourceGroup* Ogre::ResourceGroupManager::getResourceGroup | ( | const String & | name | ) | `[protected]`

Get resource group.

void Ogre::ResourceGroupManager::dropGroupContents | ( | ResourceGroup * | grp | ) | `[protected]`

Drops contents of a group, leave group there, notify ResourceManagers.

void Ogre::ResourceGroupManager::deleteGroup | ( | ResourceGroup * | grp | ) | `[protected]`

Delete a group for shutdown - don't notify ResourceManagers.

ResourceGroup* Ogre::ResourceGroupManager::findGroupContainingResourceImpl | ( | const String & | filename | ) | `[protected]`

Internal find method for auto groups.

void Ogre::ResourceGroupManager::fireResourceGroupScriptingStarted | ( | const String & | groupName,
|  | size_t | scriptCount |
| ) |  |  | `[protected]`

Internal event firing method.

void Ogre::ResourceGroupManager::fireScriptStarted | ( | const String & | scriptName | ) | `[protected]`

Internal event firing method.

void Ogre::ResourceGroupManager::fireScriptEnded | ( | const String & | scriptName | ) | `[protected]`

Internal event firing method.

void Ogre::ResourceGroupManager::fireResourceGroupScriptingEnded | ( | const String & | groupName | ) | `[protected]`

Internal event firing method.

void Ogre::ResourceGroupManager::fireResourceGroupLoadStarted | ( | const String & | groupName,
|  | size_t | resourceCount |
| ) |  |  | `[protected]`

Internal event firing method.

void Ogre::ResourceGroupManager::fireResourceStarted | ( | const ResourcePtr & | resource | ) | `[protected]`

Internal event firing method.

void Ogre::ResourceGroupManager::fireResourceEnded | ( | void |  | ) | `[protected]`

Internal event firing method.

void Ogre::ResourceGroupManager::fireResourceGroupLoadEnded | ( | const String & | groupName | ) | `[protected]`

Internal event firing method.

void Ogre::ResourceGroupManager::createResourceGroup | ( | const String & | name | ) |

Create a resource group.

Remarks:
  A resource group allows you to define a set of resources that can be loaded / unloaded as a unit. For example, it might be all the resources used for the level of a game. There is always one predefined resource group called ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, which is typically used to hold all resources which do not need to be unloaded until shutdown. There is another predefined resource group called ResourceGroupManager::INTERNAL_RESOURCE_GROUP_NAME too, which should be used by OGRE internal only, the resources created in this group aren't supposed to modify, unload or remove by user. You can create additional ones so that you can control the life of your resources in whichever way you wish. There is one other predefined value, ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME; using this causes the group name to be derived at load time by searching for the resource in the resource locations of each group in turn.

  Once you have defined a resource group, resources which will be loaded as part of it are defined in one of 3 ways:
  1. Manually through declareResource(); this is useful for scripted declarations since it is entirely generalised, and does not create Resource instances right away
  2. Through the use of scripts; some ResourceManager subtypes have script formats (e.g. .material, .overlay) which can be used to declare resources
  3. By calling ResourceManager::create to create a resource manually. This resource will go on the list for it's group and will be loaded and unloaded with that group
  You must remember to call initialiseResourceGroup if you intend to use the first 2 types.

Parameters:

  | name | The name to give the resource group.

void Ogre::ResourceGroupManager::initialiseResourceGroup | ( | const String & | name | ) |

Initialises a resource group.

Remarks:
  After creating a resource group, adding some resource locations, and perhaps pre-declaring some resources using declareResource(), but before you need to use the resources in the group, you should call this method to initialise the group. By calling this, you are triggering the following processes:
  1. Scripts for all resource types which support scripting are parsed from the resource locations, and resources within them are created (but not loaded yet).
  2. Creates all the resources which have just pre-declared using declareResource (again, these are not loaded yet)
  So what this essentially does is create a bunch of unloaded Resource entries in the respective ResourceManagers based on scripts, and resources you've pre-declared. That means that code looking for these resources will find them, but they won't be taking up much memory yet, until they are either used, or they are loaded in bulk using loadResourceGroup. Loading the resource group in bulk is entirely optional, but has the advantage of coming with progress reporting as resources are loaded.

  Failure to call this method means that loadResourceGroup will do nothing, and any resources you define in scripts will not be found. Similarly, once you have called this method you won't be able to pick up any new scripts or pre-declared resources, unless you call clearResourceGroup, set up declared resources, and call this method again.

Note:
  When you call Root::initialise, all resource groups that have already been created are automatically initialised too. Therefore you do not need to call this method for groups you define and set up before you call Root::initialise. However, since one of the most useful features of resource groups is to set them up after the main system initialisation has occurred (e.g. a group per game level), you must remember to call this method for the groups you create after this.

Parameters:

  | name | The name of the resource group to initialise

void Ogre::ResourceGroupManager::initialiseAllResourceGroups | ( | void |  | ) |

Initialise all resource groups which are yet to be initialised.

See also:
  ResourceGroupManager::intialiseResourceGroup

void Ogre::ResourceGroupManager::loadResourceGroup | ( | const String & | name,
|  | bool | loadMainResources = `true`,
|  | bool | loadWorldGeom = `true` |
| ) |  |  |

Loads a resource group.

Remarks:
  Loads any created resources which are part of the named group. Note that resources must have already been created by calling ResourceManager::create, or declared using declareResource() or in a script (such as .material and .overlay). The latter requires that initialiseResourceGroup has been called.

When this method is called, this class will callback any ResourceGroupListeners which have been registered to update them on progress.

Parameters:

  | name | The name to of the resource group to load.
  | loadMainResources | If true, loads normal resources associated with the group (you might want to set this to false if you wanted to just load world geometry in bulk)
  | loadWorldGeom | If true, loads any linked world geometry

See also:
  ResourceGroupManager::linkWorldGeometryToResourceGroup

void Ogre::ResourceGroupManager::unloadResourceGroup | ( | const String & | name,
|  | bool | reloadableOnly = `true` |
| ) |  |  |

Unloads a resource group.

Remarks:
  This method unloads all the resources that have been declared as being part of the named resource group. Note that these resources will still exist in their respective ResourceManager classes, but will be in an unloaded state. If you want to remove them entirely, you should use clearResourceGroup or destroyResourceGroup.

Parameters:

  | name | The name to of the resource group to unload.
  | reloadableOnly | If set to true, only unload the resource that is reloadable. Because some resources isn't reloadable, they will be unloaded but can't load them later. Thus, you might not want to them unloaded. Or, you might unload all of them, and then populate them manually later.

See also:
  Resource::isReloadable for resource is reloadable.

void Ogre::ResourceGroupManager::unloadUnreferencedResourcesInGroup | ( | const String & | name,
|  | bool | reloadableOnly = `true` |
| ) |  |  |

Unload all resources which are not referenced by any other object.

Remarks:
  This method behaves like unloadResourceGroup, except that it only unloads resources in the group which are not in use, ie not referenced by other objects. This allows you to free up some memory selectively whilst still keeping the group around (and the resources present, just not using much memory).

Parameters:

  | name | The name of the group to check for unreferenced resources
  | reloadableOnly | If true (the default), only unloads resources which can be subsequently automatically reloaded

void Ogre::ResourceGroupManager::clearResourceGroup | ( | const String & | name | ) |

Clears a resource group.

Remarks:
  This method unloads all resources in the group, but in addition it removes all those resources from their ResourceManagers, and then clears all the members from the list. That means after calling this method, there are no resources declared as part of the named group any more. Resource locations still persist though.

Parameters:

  | name | The name to of the resource group to clear.

void Ogre::ResourceGroupManager::destroyResourceGroup | ( | const String & | name | ) |

Destroys a resource group, clearing it first, destroying the resources which are part of it, and then removing it from the list of resource groups.

Parameters:

  | name | The name of the resource group to destroy.

void Ogre::ResourceGroupManager::addResourceLocation | ( | const String & | name,
|  | const String & | locType,
|  | const String & | resGroup = `DEFAULT_RESOURCE_GROUP_NAME`,
|  | bool | recursive = `false` |
| ) |  |  |

Method to add a resource location to for a given resource group.

Remarks:
  Resource locations are places which are searched to load resource files. When you choose to load a file, or to search for valid files to load, the resource locations are used.

Parameters:

  | name | The name of the resource location; probably a directory, zip file, URL etc.
  | locType | The codename for the resource type, which must correspond to the Archive factory which is providing the implementation.
  | resGroup | The name of the resource group for which this location is to apply. ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME is the default group which always exists, and can be used for resources which are unlikely to be unloaded until application shutdown. Otherwise it must be the name of a group; if it has not already been created with createResourceGroup then it is created automatically.
  | recursive | Whether subdirectories will be searched for files when using a pattern match (such as *.material), and whether subdirectories will be indexed. This can slow down initial loading of the archive and searches. When opening a resource you still need to use the fully qualified name, this allows duplicate names in alternate paths.

void Ogre::ResourceGroupManager::removeResourceLocation | ( | const String & | name,
|  | const String & | resGroup = `DEFAULT_RESOURCE_GROUP_NAME` |
| ) |  |  |

Removes a resource location from the search path.

void Ogre::ResourceGroupManager::declareResource | ( | const String & | name,
|  | const String & | resourceType,
|  | const String & | groupName = `DEFAULT_RESOURCE_GROUP_NAME`,
|  | const NameValuePairList & | loadParameters = `NameValuePairList()` |
| ) |  |  |

Declares a resource to be a part of a resource group, allowing you to load and unload it as part of the group.

Remarks:
  By declaring resources before you attempt to use them, you can more easily control the loading and unloading of those resources by their group. Declaring them also allows them to be enumerated, which means events can be raised to indicate the loading progress (

See also:
  ResourceGroupListener). Note that another way of declaring resources is to use a script specific to the resource type, if available (e.g. .material).

  Declared resources are not created as Resource instances (and thus are not available through their ResourceManager) until initialiseResourceGroup is called, at which point all declared resources will become created (but unloaded) Resource instances, along with any resources declared in scripts in resource locations associated with the group.

Parameters:

  | name | The resource name.
  | resourceType | The type of the resource. Ogre comes preconfigured with a number of resource types: Font GpuProgram HighLevelGpuProgram Material Mesh Skeleton Texture .. but more can be added by plugin ResourceManager classes.
  | groupName | The name of the group to which it will belong.
  | loadParameters | A list of name / value pairs which supply custom parameters to the resource which will be required before it can be loaded. These are specific to the resource type.

void Ogre::ResourceGroupManager::declareResource | ( | const String & | name,
|  | const String & | resourceType,
|  | const String & | groupName,
|  | ManualResourceLoader * | loader,
|  | const NameValuePairList & | loadParameters = `NameValuePairList()` |
| ) |  |  |

Declares a resource to be a part of a resource group, allowing you to load and unload it as part of the group.

Remarks:
  By declaring resources before you attempt to use them, you can more easily control the loading and unloading of those resources by their group. Declaring them also allows them to be enumerated, which means events can be raised to indicate the loading progress (

See also:
  ResourceGroupListener). Note that another way of declaring resources is to use a script specific to the resource type, if available (e.g. .material).

  Declared resources are not created as Resource instances (and thus are not available through their ResourceManager) until initialiseResourceGroup is called, at which point all declared resources will become created (but unloaded) Resource instances, along with any resources declared in scripts in resource locations associated with the group.

Parameters:

  | name | The resource name.
  | resourceType | The type of the resource. Ogre comes preconfigured with a number of resource types: Font GpuProgram HighLevelGpuProgram Material Mesh Skeleton Texture .. but more can be added by plugin ResourceManager classes.
  | groupName | The name of the group to which it will belong.
  | loader | Pointer to a ManualResourceLoader implementation which will be called when the Resource wishes to load. If supplied, the resource is manually loaded, otherwise it'll loading from file automatic.

Note:
  We don't support declare manually loaded resource without loader here, since it's meaningless.

Parameters:

  | loadParameters | A list of name / value pairs which supply custom parameters to the resource which will be required before it can be loaded. These are specific to the resource type.

void Ogre::ResourceGroupManager::undeclareResource | ( | const String & | name,
|  | const String & | groupName |
| ) |  |  |

Undeclare a resource.

Remarks:
  Note that this will not cause it to be unloaded if it is already loaded, nor will it destroy a resource which has already been created if initialiseResourceGroup has been called already. Only unloadResourceGroup / clearResourceGroup / destroyResourceGroup will do that.

Parameters:

  | name | The name of the resource.
  | groupName | The name of the group this resource was declared in.

DataStreamPtr Ogre::ResourceGroupManager::openResource | ( | const String & | resourceName,
|  | const String & | groupName = `DEFAULT_RESOURCE_GROUP_NAME`,
|  | bool | searchGroupsIfNotFound = `true`,
|  | Resource * | resourceBeingLoaded = `0` |
| ) |  |  |

Open a single resource by name and return a DataStream pointing at the source of the data.

Parameters:

  | resourceName | The name of the resource to locate. Even if resource locations are added recursively, you must provide a fully qualified name to this method. You can find out the matching fully qualified names by using the find() method if you need to.
  | groupName | The name of the resource group; this determines which locations are searched.
  | searchGroupsIfNotFound | If true, if the resource is not found in the group specified, other groups will be searched. If you're loading a real Resource using this option, you must also provide the resourceBeingLoaded parameter to enable the group membership to be changed
  | resourceBeingLoaded | Optional pointer to the resource being loaded, which you should supply if you want

Returns:
  Shared pointer to data stream containing the data, will be destroyed automatically when no longer referenced

DataStreamListPtr Ogre::ResourceGroupManager::openResources | ( | const String & | pattern,
|  | const String & | groupName = `DEFAULT_RESOURCE_GROUP_NAME` |
| ) |  |  |

Open all resources matching a given pattern (which can contain the character '*' as a wildcard), and return a collection of DataStream objects on them.

Parameters:

  | pattern | The pattern to look for. If resource locations have been added recursively, subdirectories will be searched too so this does not need to be fully qualified.
  | groupName | The resource group; this determines which locations are searched.

Returns:
  Shared pointer to a data stream list , will be destroyed automatically when no longer referenced

StringVectorPtr Ogre::ResourceGroupManager::listResourceNames | ( | const String & | groupName,
|  | bool | dirs = `false` |
| ) |  |  |

List all file or directory names in a resource group.

Note:
  This method only returns filenames, you can also retrieve other information using listFileInfo.

Parameters:

  | groupName | The name of the group
  | dirs | If true, directory names will be returned instead of file names

Returns:
  A list of filenames matching the criteria, all are fully qualified

FileInfoListPtr Ogre::ResourceGroupManager::listResourceFileInfo | ( | const String & | groupName,
|  | bool | dirs = `false` |
| ) |  |  |

List all files in a resource group with accompanying information.

Parameters:

  | groupName | The name of the group
  | dirs | If true, directory names will be returned instead of file names

Returns:
  A list of structures detailing quite a lot of information about all the files in the archive.

StringVectorPtr Ogre::ResourceGroupManager::findResourceNames | ( | const String & | groupName,
|  | const String & | pattern,
|  | bool | dirs = `false` |
| ) |  |  |

Find all file or directory names matching a given pattern in a resource group.

Note:
  This method only returns filenames, you can also retrieve other information using findFileInfo.

Parameters:

  | groupName | The name of the group
  | pattern | The pattern to search for; wildcards (*) are allowed
  | dirs | Set to true if you want the directories to be listed instead of files

Returns:
  A list of filenames matching the criteria, all are fully qualified

bool Ogre::ResourceGroupManager::resourceExists | ( | const String & | group,
|  | const String & | filename |
| ) |  |  |

Find out if the named file exists in a group.

Parameters:

  | group | The name of the resource group
  | filename | Fully qualified name of the file to test for

bool Ogre::ResourceGroupManager::resourceExists | ( | ResourceGroup * | group,
|  | const String & | filename |
| ) |  |  |

Find out if the named file exists in a group.

Parameters:

  | group | Pointer to the resource group
  | filename | Fully qualified name of the file to test for

const String& Ogre::ResourceGroupManager::findGroupContainingResource | ( | const String & | filename | ) |

Find the group in which a resource exists.

Parameters:

  | filename | Fully qualified name of the file the resource should be found as

Returns:
  Name of the resource group the resource was found in. An exception is thrown if the group could not be determined.

FileInfoListPtr Ogre::ResourceGroupManager::findResourceFileInfo | ( | const String & | group,
|  | const String & | pattern,
|  | bool | dirs = `false` |
| ) |  |  |

Find all files or directories matching a given pattern in a group and get some detailed information about them.

Parameters:

  | group | The name of the resource group
  | pattern | The pattern to search for; wildcards (*) are allowed
  | dirs | Set to true if you want the directories to be listed instead of files

Returns:
  A list of file information structures for all files matching the criteria.

void Ogre::ResourceGroupManager::addResourceGroupListener | ( | ResourceGroupListener * | l | ) |

Adds a ResourceGroupListener which will be called back during resource loading events.

void Ogre::ResourceGroupManager::removeResourceGroupListener | ( | ResourceGroupListener * | l | ) |

Removes a ResourceGroupListener.

void Ogre::ResourceGroupManager::setWorldResourceGroupName | ( | const String & | groupName | ) |

Sets the resource group that 'world' resources will use.

Remarks:
  This is the group which should be used by SceneManagers implementing world geometry when looking for their resources. Defaults to the DEFAULT_RESOURCE_GROUP_NAME but this can be altered.

Definition at line 698 of file OgreResourceGroupManager.h.

const String& Ogre::ResourceGroupManager::getWorldResourceGroupName | ( | void |  | ) | const

Gets the resource group that 'world' resources will use.

Definition at line 701 of file OgreResourceGroupManager.h.

void Ogre::ResourceGroupManager::linkWorldGeometryToResourceGroup | ( | const String & | group,
|  | const String & | worldGeometry,
|  | SceneManager * | sceneManager |
| ) |  |  |

Associates some world geometry with a resource group, causing it to be loaded / unloaded with the resource group.

Remarks:
  You would use this method to essentially defer a call to SceneManager::setWorldGeometry to the time when the resource group is loaded. The advantage of this is that compatible scene managers will include the estimate of the number of loading stages for that world geometry when the resource group begins loading, allowing you to include that in a loading progress report.

Parameters:

  | group | The name of the resource group
  | worldGeometry | The parameter which should be passed to setWorldGeometry
  | sceneManager | The SceneManager which should be called

void Ogre::ResourceGroupManager::unlinkWorldGeometryFromResourceGroup | ( | const String & | group | ) |

Clear any link to world geometry from a resource group.

Remarks:
  Basically undoes a previous call to linkWorldGeometryToResourceGroup.

void Ogre::ResourceGroupManager::shutdownAll | ( | void |  | ) |

Shutdown all ResourceManagers, performed as part of clean-up.

void Ogre::ResourceGroupManager::_registerResourceManager | ( | const String & | resourceType,
|  | ResourceManager * | rm |
| ) |  |  |

Internal method for registering a ResourceManager (which should be a singleton).

Creators of plugins can register new ResourceManagers this way if they wish.

Remarks:
  ResourceManagers that wish to parse scripts must also call _registerScriptLoader.

Parameters:

  | resourceType | String identifying the resource type, must be unique.
  | rm | Pointer to the ResourceManager instance.

void Ogre::ResourceGroupManager::_unregisterResourceManager | ( | const String & | resourceType | ) |

Internal method for unregistering a ResourceManager.

Remarks:
  ResourceManagers that wish to parse scripts must also call _unregisterScriptLoader.

Parameters:

  | resourceType | String identifying the resource type.

ResourceManagerIterator Ogre::ResourceGroupManager::getResourceManagerIterator | ( |  | ) |

Get an iterator over the registered resource managers.

Definition at line 750 of file OgreResourceGroupManager.h.

void Ogre::ResourceGroupManager::_registerScriptLoader | ( | ScriptLoader * | su | ) |

Internal method for registering a ScriptLoader.

Remarks:
  ScriptLoaders parse scripts when resource groups are initialised.

Parameters:

  | su | Pointer to the ScriptLoader instance.

void Ogre::ResourceGroupManager::_unregisterScriptLoader | ( | ScriptLoader * | su | ) |

Internal method for unregistering a ScriptLoader.

Parameters:

  | su | Pointer to the ScriptLoader instance.

ResourceManager* Ogre::ResourceGroupManager::_getResourceManager | ( | const String & | resourceType | ) |

Internal method for getting a registered ResourceManager.

Parameters:

  | resourceType | String identifying the resource type.

void Ogre::ResourceGroupManager::_notifyResourceCreated | ( | ResourcePtr & | res | ) |

Internal method called by ResourceManager when a resource is created.

Parameters:

  | res | Weak reference to resource

void Ogre::ResourceGroupManager::_notifyResourceRemoved | ( | ResourcePtr & | res | ) |

Internal method called by ResourceManager when a resource is removed.

Parameters:

  | res | Weak reference to resource

void Ogre::ResourceGroupManager::_notifyResourceGroupChanged | ( | const String & | oldGroup,
|  | Resource * | res |
| ) |  |  |

Internale method to notify the group manager that a resource has changed group (only applicable for autodetect group).

void Ogre::ResourceGroupManager::_notifyAllResourcesRemoved | ( | ResourceManager * | manager | ) |

Internal method called by ResourceManager when all resources for that manager are removed.

Parameters:

  | manager | Pointer to the manager for which all resources are being removed

void Ogre::ResourceGroupManager::_notifyWorldGeometryStageStarted | ( | const String & | description | ) |

Notify this manager that one stage of world geometry loading has been started.

Remarks:
  Custom SceneManagers which load custom world geometry should call this method the number of times equal to the value they return from SceneManager::estimateWorldGeometry while loading their geometry.

void Ogre::ResourceGroupManager::_notifyWorldGeometryStageEnded | ( | void |  | ) |

Notify this manager that one stage of world geometry loading has been completed.

Remarks:
  Custom SceneManagers which load custom world geometry should call this method the number of times equal to the value they return from SceneManager::estimateWorldGeometry while loading their geometry.

StringVector Ogre::ResourceGroupManager::getResourceGroups | ( | void |  | ) |

Get a list of the currently defined resource groups.

Note:
  This method intentionally returns a copy rather than a reference in order to avoid any contention issues in multithreaded applications.

Returns:
  A copy of list of currently defined groups.

ResourceDeclarationList Ogre::ResourceGroupManager::getResourceDeclarationList | ( | const String & | groupName | ) |

Get the list of resource declarations for the specified group name.

Note:
  This method intentionally returns a copy rather than a reference in order to avoid any contention issues in multithreaded applications.

Parameters:

  | groupName | The name of the group

Returns:
  A copy of list of currently defined resources.

static ResourceGroupManager& Ogre::ResourceGroupManager::getSingleton | ( | void |  | ) | `[static]`

Override standard Singleton retrieval.

Remarks:
  Why do we do this? Well, it's because the Singleton implementation is in a .h file, which means it gets compiled into anybody who includes it. This is needed for the Singleton template to work, but we actually only want it compiled into the implementation of the class based on the Singleton, not all of them. If we don't change this, we get link errors when trying to use the Singleton-based class from an outside dll.

  This method just delegates to the template version anyway, but the implementation stays in this single compilation unit, preventing link errors.

Reimplemented from Ogre::Singleton< T >.

static ResourceGroupManager* Ogre::ResourceGroupManager::getSingletonPtr | ( | void |  | ) | `[static]`

Override standard Singleton retrieval.

Remarks:
  Why do we do this? Well, it's because the Singleton implementation is in a .h file, which means it gets compiled into anybody who includes it. This is needed for the Singleton template to work, but we actually only want it compiled into the implementation of the class based on the Singleton, not all of them. If we don't change this, we get link errors when trying to use the Singleton-based class from an outside dll.

  This method just delegates to the template version anyway, but the implementation stays in this single compilation unit, preventing link errors.

Reimplemented from Ogre::Singleton< T >.

## Member Data Documentation

OGRE_AUTO_MUTEX String Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME`[static]`

Default resource group name.

Definition at line 176 of file OgreResourceGroupManager.h.

String Ogre::ResourceGroupManager::INTERNAL_RESOURCE_GROUP_NAME`[static]`

Internal resource group name (should be used by OGRE internal only).

Definition at line 178 of file OgreResourceGroupManager.h.

String Ogre::ResourceGroupManager::BOOTSTRAP_RESOURCE_GROUP_NAME`[static]`

Bootstrap resource group name (min OGRE resources).

Definition at line 180 of file OgreResourceGroupManager.h.

String Ogre::ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME`[static]`

Special resource group name which causes resource group to be automatically determined based on searching for the resource in all groups.

Definition at line 182 of file OgreResourceGroupManager.h.

size_t Ogre::ResourceGroupManager::RESOURCE_SYSTEM_NUM_REFERENCE_COUNTS`[static]`

The number of reference counts held per resource by the resource system.

Definition at line 184 of file OgreResourceGroupManager.h.

ResourceManagerMap Ogre::ResourceGroupManager::mResourceManagerMap`[protected]`

Map of resource types (strings) to ResourceManagers, used to notify them to load / unload group contents.

Definition at line 199 of file OgreResourceGroupManager.h.

ScriptLoaderOrderMap Ogre::ResourceGroupManager::mScriptLoaderOrderMap`[protected]`

Definition at line 203 of file OgreResourceGroupManager.h.

ResourceGroupListenerList Ogre::ResourceGroupManager::mResourceGroupListenerList`[protected]`

Definition at line 206 of file OgreResourceGroupManager.h.

ResourceGroupMap Ogre::ResourceGroupManager::mResourceGroupMap`[protected]`

Definition at line 262 of file OgreResourceGroupManager.h.

String Ogre::ResourceGroupManager::mWorldGroupName`[protected]`

Group name for world resources.

Definition at line 265 of file OgreResourceGroupManager.h.

ResourceGroup* Ogre::ResourceGroupManager::mCurrentGroup`[protected]`

Stored current group - optimisation for when bulk loading a group.

Definition at line 308 of file OgreResourceGroupManager.h.

template<typename T>

T* Ogre::Singleton< T >::ms_Singleton`[static, protected, inherited]`

Definition at line 61 of file OgreSingleton.h.

Referenced by Ogre::Singleton< Ogre::FontManager >::getSingleton(), Ogre::Singleton< Ogre::FontManager >::getSingletonPtr(), Ogre::Singleton< Ogre::FontManager >::Singleton(), and Ogre::Singleton< Ogre::FontManager >::~Singleton().

The documentation for this class was generated from the following file:

- OgreResourceGroupManager.h

Copyright © 2000-2005 by The OGRE Team
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Mon Jun 16 12:52:33 2008