Panda3D
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collisionNode.h
00001 // Filename: collisionNode.h
00002 // Created by:  drose (16Mar02)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef COLLISIONNODE_H
00016 #define COLLISIONNODE_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "collisionSolid.h"
00021 
00022 #include "collideMask.h"
00023 #include "pandaNode.h"
00024 
00025 ////////////////////////////////////////////////////////////////////
00026 //       Class : CollisionNode
00027 // Description : A node in the scene graph that can hold any number of
00028 //               CollisionSolids.  This may either represent a bit of
00029 //               static geometry in the scene that things will collide
00030 //               with, or an animated object twirling around in the
00031 //               world and running into things.
00032 ////////////////////////////////////////////////////////////////////
00033 class EXPCL_PANDA_COLLIDE CollisionNode : public PandaNode {
00034 PUBLISHED:
00035   CollisionNode(const string &name);
00036 
00037 protected:
00038   CollisionNode(const CollisionNode &copy);
00039 
00040 public:
00041   virtual ~CollisionNode();
00042   virtual PandaNode *make_copy() const;
00043   virtual bool preserve_name() const;
00044   virtual void xform(const LMatrix4 &mat);
00045   virtual PandaNode *combine_with(PandaNode *other); 
00046   virtual CollideMask get_legal_collide_mask() const;
00047 
00048   virtual bool cull_callback(CullTraverser *trav, CullTraverserData &data);
00049   virtual bool is_renderable() const;
00050   virtual bool is_collision_node() const;
00051 
00052   virtual void output(ostream &out) const;
00053 
00054 PUBLISHED:
00055   INLINE void set_collide_mask(CollideMask mask);
00056   void set_from_collide_mask(CollideMask mask);
00057   INLINE void set_into_collide_mask(CollideMask mask);
00058   INLINE CollideMask get_from_collide_mask() const;
00059   INLINE CollideMask get_into_collide_mask() const;
00060 
00061   INLINE void clear_solids();
00062   INLINE int get_num_solids() const;
00063   INLINE CPT(CollisionSolid) get_solid(int n) const;
00064   MAKE_SEQ(get_solids, get_num_solids, get_solid);
00065   INLINE PT(CollisionSolid) modify_solid(int n);
00066   INLINE void set_solid(int n, CollisionSolid *solid);
00067   INLINE void remove_solid(int n);
00068   INLINE int add_solid(const CollisionSolid *solid);
00069 
00070   INLINE int get_collider_sort() const;
00071   INLINE void set_collider_sort(int sort);
00072 
00073   INLINE static CollideMask get_default_collide_mask();
00074 
00075 protected:
00076   virtual void compute_internal_bounds(CPT(BoundingVolume) &internal_bounds,
00077                                        int &internal_vertices,
00078                                        int pipeline_stage,
00079                                        Thread *current_thread) const;
00080 
00081 private:
00082   CPT(RenderState) get_last_pos_state();
00083 
00084   // This data is not cycled, for now.  We assume the collision
00085   // traversal will take place in App only.  Perhaps we will revisit
00086   // this later.
00087   CollideMask _from_collide_mask;
00088   int _collider_sort;
00089 
00090   typedef pvector< COWPT(CollisionSolid) > Solids;
00091   Solids _solids;
00092   
00093 public:
00094   static void register_with_read_factory();
00095   virtual void write_datagram(BamWriter *manager, Datagram &dg);
00096   virtual int complete_pointers(TypedWritable **plist, BamReader *manager);
00097 
00098 protected:
00099   static TypedWritable *make_from_bam(const FactoryParams &params);
00100   void fillin(DatagramIterator &scan, BamReader *manager);
00101 
00102 public:
00103   static TypeHandle get_class_type() {
00104     return _type_handle;
00105   }
00106   static void init_type() {
00107     PandaNode::init_type();
00108     register_type(_type_handle, "CollisionNode",
00109                   PandaNode::get_class_type());
00110   }
00111   virtual TypeHandle get_type() const {
00112     return get_class_type();
00113   }
00114   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00115 
00116 private:
00117   static TypeHandle _type_handle;
00118 };
00119 
00120 #include "collisionNode.I"
00121 
00122 #endif
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