Panda3D
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forceNode.h
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1/**
2 * PANDA 3D SOFTWARE
3 * Copyright (c) Carnegie Mellon University. All rights reserved.
4 *
5 * All use of this software is subject to the terms of the revised BSD
6 * license. You should have received a copy of this license along
7 * with this source code in a file named "LICENSE."
8 *
9 * @file forceNode.h
10 * @author charles
11 * @date 2000-08-02
12 */
13
14#ifndef FORCENODE_H
15#define FORCENODE_H
16
17#include "pandaNode.h"
18#include "pvector.h"
19
20#include "baseForce.h"
21
22/**
23 * A force that lives in the scene graph and is therefore subject to local
24 * coordinate systems. An example of this would be simulating gravity in a
25 * rotating space station. or something.
26 */
27class EXPCL_PANDA_PHYSICS ForceNode : public PandaNode {
28PUBLISHED:
29 explicit ForceNode(const std::string &name);
30 INLINE void clear();
31 INLINE BaseForce *get_force(size_t index) const;
32 INLINE size_t get_num_forces() const;
33 MAKE_SEQ(get_forces, get_num_forces, get_force);
34 INLINE void add_force(BaseForce *force);
35
36 void add_forces_from(const ForceNode &other);
37 void set_force(size_t index, BaseForce *force);
38 void insert_force(size_t index, BaseForce *force);
39 void remove_force(BaseForce *force);
40 void remove_force(size_t index);
41
42 MAKE_SEQ_PROPERTY(forces, get_num_forces, get_force, set_force, remove_force, insert_force);
43
44 virtual void output(std::ostream &out) const;
45 virtual void write_forces(std::ostream &out, int indent=0) const;
46 virtual void write(std::ostream &out, int indent=0) const;
47
48public:
49 virtual ~ForceNode();
50 virtual bool safe_to_flatten() const { return false; }
51 virtual PandaNode *make_copy() const;
52
53protected:
54 ForceNode(const ForceNode &copy);
55
56private:
57 typedef pvector< PT(BaseForce) > ForceVector;
58 ForceVector _forces;
59
60public:
61 static TypeHandle get_class_type() {
62 return _type_handle;
63 }
64 static void init_type() {
65 PandaNode::init_type();
66 register_type(_type_handle, "ForceNode",
67 PandaNode::get_class_type());
68 }
69 virtual TypeHandle get_type() const {
70 return get_class_type();
71 }
72 virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
73
74private:
75 static TypeHandle _type_handle;
76};
77
78#include "forceNode.I"
79
80#endif // FORCENODE_H
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pure virtual base class for all forces that could POSSIBLY exist.
Definition baseForce.h:29
A force that lives in the scene graph and is therefore subject to local coordinate systems.
Definition forceNode.h:27
virtual bool safe_to_flatten() const
Returns true if it is generally safe to flatten out this particular kind of PandaNode by duplicating ...
Definition forceNode.h:50
A basic node of the scene graph or data graph.
Definition pandaNode.h:65
virtual PandaNode * make_copy() const
Returns a newly-allocated PandaNode that is a shallow copy of this one.
TypeHandle is the identifier used to differentiate C++ class types.
Definition typeHandle.h:81
This is our own Panda specialization on the default STL vector.
Definition pvector.h:42
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
std::ostream & indent(std::ostream &out, int indent_level)
A handy function for doing text formatting.
Definition indent.cxx:20
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...