104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file collisionHandlerGravity.h
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* @author drose
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* @date 2002-03-16
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*/
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#ifndef CollisionHandlerGravity_H
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#define CollisionHandlerGravity_H
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#include "pandabase.h"
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#include "collisionHandlerPhysical.h"
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/**
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* A specialized kind of CollisionHandler that sets the Z height of the
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* collider to a fixed linear offset from the highest detected collision point
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* each frame. It's intended to implement walking around on a floor of
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* varying height by casting a ray down from the avatar's head.
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*/
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class EXPCL_PANDA_COLLIDE CollisionHandlerGravity : public CollisionHandlerPhysical {
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PUBLISHED:
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CollisionHandlerGravity();
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virtual ~CollisionHandlerGravity();
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INLINE void set_offset(PN_stdfloat offset);
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INLINE PN_stdfloat get_offset() const;
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INLINE void set_reach(PN_stdfloat reach);
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INLINE PN_stdfloat get_reach() const;
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INLINE PN_stdfloat get_airborne_height() const;
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INLINE bool is_on_ground() const;
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INLINE PN_stdfloat get_impact_velocity() const;
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INLINE const LVector3 &get_contact_normal() const;
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INLINE void add_velocity(PN_stdfloat velocity);
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INLINE void set_velocity(PN_stdfloat velocity);
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INLINE PN_stdfloat get_velocity() const;
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INLINE void set_gravity(PN_stdfloat gravity);
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INLINE PN_stdfloat get_gravity() const;
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INLINE void set_max_velocity(PN_stdfloat max_vel);
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INLINE PN_stdfloat get_max_velocity() const;
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INLINE void set_legacy_mode(bool legacy_mode);
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INLINE bool get_legacy_mode() const;
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PUBLISHED:
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MAKE_PROPERTY(offset, get_offset, set_offset);
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MAKE_PROPERTY(reach, get_reach, set_reach);
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MAKE_PROPERTY(airborne_height, get_airborne_height);
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MAKE_PROPERTY(on_ground, is_on_ground);
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MAKE_PROPERTY(impact_velocity, get_impact_velocity);
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MAKE_PROPERTY(contact_normal, get_contact_normal);
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MAKE_PROPERTY(velocity, get_velocity, set_velocity);
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MAKE_PROPERTY(gravity, get_gravity, set_gravity);
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MAKE_PROPERTY(max_velocity, get_max_velocity, set_max_velocity);
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protected:
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PN_stdfloat set_highest_collision(const NodePath &target_node_path, const NodePath &from_node_path, const Entries &entries);
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virtual bool handle_entries();
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virtual void apply_linear_force(ColliderDef &def, const LVector3 &force);
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private:
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PN_stdfloat _offset;
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PN_stdfloat _reach;
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PN_stdfloat _airborne_height;
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PN_stdfloat _impact_velocity;
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PN_stdfloat _gravity;
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PN_stdfloat _current_velocity;
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PN_stdfloat _max_velocity;
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LVector3 _contact_normal;
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bool _legacy_mode;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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CollisionHandlerPhysical::init_type();
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register_type(_type_handle, "CollisionHandlerGravity",
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CollisionHandlerPhysical::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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};
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#include "collisionHandlerGravity.I"
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#endif
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