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CollisionHandlerPusher Class Reference

A specialized kind of CollisionHandler that simply pushes back on things that attempt to move into solid walls. More...

#include <collisionHandlerPusher.h>

Inheritance diagram for CollisionHandlerPusher:

CollisionHandlerPhysical CollisionHandlerEvent CollisionHandler TypedReferenceCount TypedObject ReferenceCount List of all members.

Public Member Functions

 CollisionHandlerPusher ()
virtual ~CollisionHandlerPusher ()
void set_horizontal (bool flag)
bool get_horizontal () const
virtual TypeHandle get_type () const
virtual TypeHandle force_init_type ()
virtual void begin_group ()
 Will be called by the CollisionTraverser before a new traversal is begun.

virtual void add_entry (CollisionEntry *entry)
 Called between a begin_group() ..

virtual bool end_group ()
 Called by the CollisionTraverser at the completion of all collision detections for this traversal.

void add_collider_drive (CollisionNode *node, DriveInterface *drive_interface)
 Adds a new collider to the list with a DriveInterface pointer that needs to be told about the collider's new position, or updates the existing collider with a new DriveInterface pointer.

void add_collider_node (CollisionNode *node, PandaNode *target)
 Adds a new collider to the list with a PandaNode pointer that will be updated with the collider's new position, or updates the existing collider with a new PandaNode pointer.

bool remove_collider (CollisionNode *node)
 Removes the collider from the list of colliders that this handler knows about.

bool has_collider (CollisionNode *node) const
 Returns true if the handler knows about the indicated collider, false otherwise.

void clear_colliders ()
 Completely empties the list of colliders this handler knows about.

void set_in_pattern (const string &pattern)
 Sets the pattern string that indicates how the event names are generated for each collision detected.

string get_in_pattern () const
 Returns the pattern string that indicates how the event names are generated for each collision detected.

void set_again_pattern (const string &pattern)
 Sets the pattern string that indicates how the event names are generated when a collision between two particular nodes is *still* detected.

string get_again_pattern () const
 Returns the pattern string that indicates how the event names are generated when a collision between two particular nodes is *still* detected.

void set_out_pattern (const string &pattern)
 Sets the pattern string that indicates how the event names are generated when a collision between two particular nodes is *no longer* detected.

string get_out_pattern () const
 Returns the pattern string that indicates how the event names are generated when a collision between two particular nodes is *no longer* detected.

void clear ()
 Empties the list of elements that all colliders are known to be colliding with.

int get_type_index () const
 Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.

bool is_of_type (TypeHandle handle) const
 Returns true if the current object is or derives from the indicated type.

bool is_exact_type (TypeHandle handle) const
 Returns true if the current object is the indicated type exactly.

int get_ref_count () const
 Returns the current reference count.

int ref () const
 Explicitly increments the reference count.

int unref () const
 Explicitly decrements the reference count.

void test_ref_count_integrity () const
 Does some easy checks to make sure that the reference count isn't completely bogus.


Static Public Member Functions

TypeHandle get_class_type ()
void init_type ()

Protected Types

typedef pvector< PointerTo<
CollisionEntry > > 		Entries
typedef pmap< PointerTo< CollisionNode >,
Entries > 		FromEntries
typedef pmap< PointerTo< CollisionNode >,
ColliderDef > 		Colliders

Protected Member Functions

virtual bool handle_entries ()
 Called by the parent class after all collisions have been detected, this manages the various collisions and moves around the nodes as necessary.


Protected Attributes

FromEntries _from_entries
Colliders _colliders

Private Attributes

bool _horizontal

Static Private Attributes

TypeHandle _type_handle

Detailed Description

A specialized kind of CollisionHandler that simply pushes back on things that attempt to move into solid walls.

This is the simplest kind of "real-world" collisions you can have.

Definition at line 42 of file collisionHandlerPusher.h.

Member Typedef Documentation

typedef pmap<PointerTo< CollisionNode >, ColliderDef> CollisionHandlerPhysical::Colliders [protected, inherited]
 

Definition at line 84 of file collisionHandlerPhysical.h.

typedef pvector< PointerTo< CollisionEntry > > CollisionHandlerPhysical::Entries [protected, inherited]
 

Definition at line 67 of file collisionHandlerPhysical.h.

typedef pmap<PointerTo< CollisionNode >, Entries> CollisionHandlerPhysical::FromEntries [protected, inherited]
 

Definition at line 68 of file collisionHandlerPhysical.h.

Constructor & Destructor Documentation

CollisionHandlerPusher::CollisionHandlerPusher (   ) 
 

Definition at line 60 of file collisionHandlerPusher.cxx.

CollisionHandlerPusher::~CollisionHandlerPusher (   )  [virtual]
 

Definition at line 72 of file collisionHandlerPusher.cxx.

References CollisionHandlerPhysical::_colliders, CollisionHandlerPhysical::_from_entries, nassertr, and NULL.

Member Function Documentation

void CollisionHandlerPhysical::add_collider_drive (  CollisionNode *  node,
DriveInterface *  drive_interface
)  [inherited]
 

Adds a new collider to the list with a DriveInterface pointer that needs to be told about the collider's new position, or updates the existing collider with a new DriveInterface pointer.

Definition at line 178 of file collisionHandlerPhysical.cxx.

References CollisionHandlerPhysical::_colliders.

void CollisionHandlerPhysical::add_collider_node (  CollisionNode *  node,
PandaNode *  target
)  [inherited]
 

Adds a new collider to the list with a PandaNode pointer that will be updated with the collider's new position, or updates the existing collider with a new PandaNode pointer.

Definition at line 197 of file collisionHandlerPhysical.cxx.

void CollisionHandlerPhysical::add_entry (  CollisionEntry *  entry  )  [virtual, inherited]
 

Called between a begin_group() ..

end_group() sequence for each collision that is detected.

Reimplemented from CollisionHandlerEvent.

Definition at line 132 of file collisionHandlerPhysical.cxx.

References CollisionHandlerPhysical::_colliders.

void CollisionHandlerPhysical::begin_group (   )  [virtual, inherited]
 

Will be called by the CollisionTraverser before a new traversal is begun.

It instructs the handler to reset itself in preparation for a number of CollisionEntries to be sent.

Reimplemented from CollisionHandlerEvent.

Definition at line 116 of file collisionHandlerPhysical.cxx.

References CollisionHandlerEvent::end_group(), and CollisionHandlerPhysical::handle_entries().

void CollisionHandlerEvent::clear (   )  [inherited]
 

Empties the list of elements that all colliders are known to be colliding with.

No "out" events will be thrown; if the same collision is detected next frame, a new "in" event will be thrown for each collision.

This can be called each frame to defeat the persistent "in" event mechanism, which prevents the same "in" event from being thrown repeatedly. However, also see set_again_pattern(), which can be used to set the event that is thrown when a collision is detected for two or more consecutive frames.

Definition at line 199 of file collisionHandlerEvent.cxx.

void CollisionHandlerPhysical::clear_colliders (   )  [inherited]
 

Completely empties the list of colliders this handler knows about.

Definition at line 248 of file collisionHandlerPhysical.cxx.

bool CollisionHandlerPhysical::end_group (   )  [virtual, inherited]
 

Called by the CollisionTraverser at the completion of all collision detections for this traversal.

It should do whatever finalization is required for the handler.

Reimplemented from CollisionHandlerEvent.

Definition at line 157 of file collisionHandlerPhysical.cxx.

References CollisionHandlerPhysical::_colliders.

virtual TypeHandle CollisionHandlerPusher::force_init_type (  void   )  [inline, virtual]
 

Reimplemented from CollisionHandlerPhysical.

Definition at line 69 of file collisionHandlerPusher.h.

string CollisionHandlerEvent::get_again_pattern (   )  const [inline, inherited]
 

Returns the pattern string that indicates how the event names are generated when a collision between two particular nodes is *still* detected.

See set_again_pattern() and set_in_pattern().

Definition at line 189 of file collisionHandlerEvent.I.

TypeHandle CollisionHandlerPusher::get_class_type (  void   )  [inline, static]
 

Reimplemented from CollisionHandlerPhysical.

Definition at line 58 of file collisionHandlerPusher.h.

bool CollisionHandlerPusher::get_horizontal (   )  const [inline]
 

Definition at line 43 of file collisionHandlerPusher.I.

string CollisionHandlerEvent::get_in_pattern (   )  const [inline, inherited]
 

Returns the pattern string that indicates how the event names are generated for each collision detected.

See set_in_pattern().

Definition at line 131 of file collisionHandlerEvent.I.

References CollisionHandlerEvent::_out_pattern, and INLINE.

string CollisionHandlerEvent::get_out_pattern (   )  const [inline, inherited]
 

Returns the pattern string that indicates how the event names are generated when a collision between two particular nodes is *no longer* detected.

See set_out_pattern() and set_in_pattern().

Definition at line 242 of file collisionHandlerEvent.I.

int ReferenceCount::get_ref_count (   )  const [inline, inherited]
 

Returns the current reference count.

Definition at line 183 of file referenceCount.I.

Referenced by RenderState::determine_bin_index(), RenderEffects::determine_show_bounds(), FontPool::ns_garbage_collect(), TexturePool::ns_garbage_collect(), MaterialPool::ns_get_material(), and TexturePool::ns_release_texture().

virtual TypeHandle CollisionHandlerPusher::get_type (  void   )  const [inline, virtual]
 

Reimplemented from CollisionHandlerPhysical.

Definition at line 66 of file collisionHandlerPusher.h.

Referenced by handle_entries().

int TypedObject::get_type_index (   )  const [inline, inherited]
 

Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.

This is equivalent to get_type().get_index().

Definition at line 71 of file typedObject.I.

References TypeHandle::get_name(), TypedObject::get_type(), and INLINE.

bool CollisionHandlerPusher::handle_entries (   )  [protected, virtual]
 

Called by the parent class after all collisions have been detected, this manages the various collisions and moves around the nodes as necessary.

The return value is normally true, but it may be false to indicate the CollisionTraverser should disable this handler from being called in the future.

Implements CollisionHandlerPhysical.

Definition at line 96 of file collisionHandlerPusher.cxx.

References CollisionHandlerPhysical::_colliders, and get_type().

bool CollisionHandlerPhysical::has_collider (  CollisionNode *  node  )  const [inherited]
 

Returns true if the handler knows about the indicated collider, false otherwise.

Definition at line 232 of file collisionHandlerPhysical.cxx.

void CollisionHandlerPusher::init_type (  void   )  [inline, static]
 

Reimplemented from CollisionHandlerPhysical.

Definition at line 61 of file collisionHandlerPusher.h.

bool TypedObject::is_exact_type (  TypeHandle  handle  )  const [inline, inherited]
 

Returns true if the current object is the indicated type exactly.

Definition at line 101 of file typedObject.I.

Referenced by PT(), and CollisionNode::xform().

bool TypedObject::is_of_type (  TypeHandle  handle  )  const [inline, inherited]
 

Returns true if the current object is or derives from the indicated type.

Definition at line 86 of file typedObject.I.

Referenced by EggMaterialCollection::collapse_equivalent_materials(), EggTextureCollection::collapse_equivalent_textures(), DeferredNodeProperty::compose(), AnimBundleMaker::create_s_channel(), CharacterMaker::create_slider(), ProjectionScreen::cull_callback(), DataNode::define_output(), EggNode::determine_draw_order(), CharacterMaker::egg_to_index(), EggGroupUniquifier::EggGroupUniquifier(), EggPoolUniquifier::EggPoolUniquifier(), EggGroupNode::find_textures(), StaticTextFont::get_glyph(), EggMaterialCollection::insert_materials(), EggTextureCollection::insert_textures(), CharacterJoint::make_copy(), PT(), EggGroupNode::r_flatten_transforms(), EggGroupNode::r_transform_vertices(), EggGroupNode::recompute_polygon_normals(), CollisionLevelState::reserve(), PandaFramework::reset_frame_rate(), PandaFramework::set_texture(), EggGroupNode::steal_children(), and DataGraphTraverser::traverse().

int ReferenceCount::ref (   )  const [inline, inherited]
 

Explicitly increments the reference count.

User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically.

This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it.

The return value is the new reference count.

Definition at line 225 of file referenceCount.I.

Referenced by ClientDevice::ClientDevice(), EggGroupNode::find_textures(), EggGroupNode::r_apply_texmats(), EggGroupNode::r_flatten_transforms(), and EggGroupNode::reverse_vertex_ordering().

bool CollisionHandlerPhysical::remove_collider (  CollisionNode *  node  )  [inherited]
 

Removes the collider from the list of colliders that this handler knows about.

Definition at line 212 of file collisionHandlerPhysical.cxx.

void CollisionHandlerEvent::set_again_pattern (  const string &  pattern  )  [inline, inherited]
 

Sets the pattern string that indicates how the event names are generated when a collision between two particular nodes is *still* detected.

This event is thrown each consecutive time a collision between two particular nodes is detected, starting with the second time.

In general, the in_pattern event is thrown on the first detection of a collision between two particular nodes. In subsequent passes, as long as a collision between those two nodes continues to be detected each frame, the again_pattern is thrown. The first frame in which the collision is no longer detected, the out_pattern event is thrown.

Definition at line 170 of file collisionHandlerEvent.I.

void CollisionHandlerPusher::set_horizontal (  bool  flag  )  [inline]
 

Definition at line 31 of file collisionHandlerPusher.I.

References _horizontal, and INLINE.

void CollisionHandlerEvent::set_in_pattern (  const string &  pattern  )  [inline, inherited]
 

Sets the pattern string that indicates how the event names are generated for each collision detected.

This is a string that may contain any of the following:

fn - the name of the "from" object's node in - the name of the "into" object's node ft - 't' if "from" is tangible, 'i' if intangible it - 't' if "into" is tangible, 'i' if intangible

The event name will be based on the in_pattern string specified here, with all occurrences of the above strings replaced with the corresponding values.

In general, the in_pattern event is thrown on the first detection of a collision between two particular nodes. In subsequent passes, as long as a collision between those two nodes continues to be detected each frame, the again_pattern is thrown. The first frame in which the collision is no longer detected, the out_pattern event is thrown.

Definition at line 114 of file collisionHandlerEvent.I.

void CollisionHandlerEvent::set_out_pattern (  const string &  pattern  )  [inline, inherited]
 

Sets the pattern string that indicates how the event names are generated when a collision between two particular nodes is *no longer* detected.

In general, the in_pattern event is thrown on the first detection of a collision between two particular nodes. In subsequent passes, as long as a collision between those two nodes continues to be detected each frame, the again_pattern is thrown. The first frame in which the collision is no longer detected, the out_pattern event is thrown.

Definition at line 223 of file collisionHandlerEvent.I.

void ReferenceCount::test_ref_count_integrity (   )  const [inline, inherited]
 

Does some easy checks to make sure that the reference count isn't completely bogus.

Definition at line 328 of file referenceCount.I.

References INLINE.

Referenced by EggNode::determine_bin(), and ReferenceCount::~ReferenceCount().

int ReferenceCount::unref (   )  const [inline, inherited]
 

Explicitly decrements the reference count.

Note that the object will not be implicitly deleted by unref() simply because the reference count drops to zero. (Having a member function delete itself is problematic; plus, we don't have a virtual destructor anyway.) However, see the helper function unref_delete().

User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically.

This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it.

The return value is the new reference count.

Definition at line 293 of file referenceCount.I.

References INLINE.

Referenced by RenderState::determine_bin_index(), and RenderEffects::determine_show_bounds().

Member Data Documentation

Colliders CollisionHandlerPhysical::_colliders [protected, inherited]
 

Definition at line 85 of file collisionHandlerPhysical.h.

Referenced by CollisionHandlerPhysical::add_collider_drive(), CollisionHandlerPhysical::add_entry(), CollisionHandlerPhysical::end_group(), handle_entries(), CollisionHandlerFloor::~CollisionHandlerFloor(), and ~CollisionHandlerPusher().

FromEntries CollisionHandlerPhysical::_from_entries [protected, inherited]
 

Definition at line 69 of file collisionHandlerPhysical.h.

Referenced by CollisionHandlerPhysical::CollisionHandlerPhysical(), CollisionHandlerFloor::~CollisionHandlerFloor(), and ~CollisionHandlerPusher().

bool CollisionHandlerPusher::_horizontal [private]
 

Definition at line 54 of file collisionHandlerPusher.h.

Referenced by set_horizontal().

TypeHandle CollisionHandlerPusher::_type_handle [static, private]
 

Reimplemented from CollisionHandlerPhysical.

Definition at line 29 of file collisionHandlerPusher.cxx.

The documentation for this class was generated from the following files:
Generated on Fri May 2 00:48:29 2003 for Panda by doxygen1.3