Panda3D
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collisionHandlerFloor.h
00001 // Filename: collisionHandlerFloor.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 COLLISIONHANDLERFLOOR_H
00016 #define COLLISIONHANDLERFLOOR_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "collisionHandlerPhysical.h"
00021 
00022 ////////////////////////////////////////////////////////////////////
00023 //       Class : CollisionHandlerFloor
00024 // Description : A specialized kind of CollisionHandler that sets the
00025 //               Z height of the collider to a fixed linear offset
00026 //               from the highest detected collision point each frame.
00027 //               It's intended to implement walking around on a floor
00028 //               of varying height by casting a ray down from the
00029 //               avatar's head.
00030 ////////////////////////////////////////////////////////////////////
00031 class EXPCL_PANDA_COLLIDE CollisionHandlerFloor : public CollisionHandlerPhysical {
00032 PUBLISHED:
00033   CollisionHandlerFloor();
00034   virtual ~CollisionHandlerFloor();
00035 
00036   INLINE void set_offset(PN_stdfloat offset);
00037   INLINE PN_stdfloat get_offset() const;
00038 
00039   INLINE void set_reach(PN_stdfloat reach);
00040   INLINE PN_stdfloat get_reach() const;
00041 
00042   INLINE void set_max_velocity(PN_stdfloat max_vel);
00043   INLINE PN_stdfloat get_max_velocity() const;
00044 
00045 protected:
00046   PN_stdfloat set_highest_collision(const NodePath &target_node_path, const NodePath &from_node_path, const Entries &entries);
00047   virtual bool handle_entries();
00048   virtual void apply_linear_force(ColliderDef &def, const LVector3 &force);
00049 
00050 private:
00051   PN_stdfloat _offset;
00052   PN_stdfloat _reach;
00053   PN_stdfloat _max_velocity;
00054 
00055 
00056 public:
00057   static TypeHandle get_class_type() {
00058     return _type_handle;
00059   }
00060   static void init_type() {
00061     CollisionHandlerPhysical::init_type();
00062     register_type(_type_handle, "CollisionHandlerFloor",
00063                   CollisionHandlerPhysical::get_class_type());
00064   }
00065   virtual TypeHandle get_type() const {
00066     return get_class_type();
00067   }
00068   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00069 
00070 private:
00071   static TypeHandle _type_handle;
00072 };
00073 
00074 #include "collisionHandlerFloor.I"
00075 
00076 #endif
00077 
00078 
00079 
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