81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
// Filename: configurable.h
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// Created by: mike (09Jan97)
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//
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////////////////////////////////////////////////////////////////////
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//
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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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////////////////////////////////////////////////////////////////////
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#ifndef CONFIGURABLE_H
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#define CONFIGURABLE_H
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//
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////////////////////////////////////////////////////////////////////
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// Includes
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////////////////////////////////////////////////////////////////////
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#include "pandabase.h"
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#include "typedObject.h"
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////////////////////////////////////////////////////////////////////
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// Defines
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////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////
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// Class : Configurable
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// Description : An object that has data or parameters that are set
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// less frequently (at least occasionally) than every
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// frame. We can cache the configuration info by
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// by using the "dirty" flag.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA_PUTIL Configurable : public TypedObject {
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public:
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Configurable( void ) { make_dirty(); }
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virtual void config( void ) { _dirty = false; }
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INLINE void check_config() const {
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if (_dirty) {
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// This is a sneaky trick to allow check_config() to be called
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// from a const member function. Even though we will be calling
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// config(), a non-const function that modifies the class
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// object, in some sense it's not really modifying the class
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// object--it's just updating a few internal settings for
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// consistency.
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((Configurable *)this)->config();
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}
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}
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INLINE bool is_dirty() const { return _dirty; }
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INLINE void make_dirty() { _dirty = true; }
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private:
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bool _dirty;
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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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TypedObject::init_type();
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register_type(_type_handle, "Configurable",
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TypedObject::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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#endif
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