81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
// Filename: writeableConfigurable.h
|
|
// Created by: jason (19Jun00)
|
|
//
|
|
|
|
//
|
|
#ifndef WRITEABLECONFIGURABLE_H
|
|
#define WRITEABLECONFIGURABLE_H
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
// Includes
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
#include <pandabase.h>
|
|
|
|
#include "typedWriteable.h"
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Defines
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Class : WriteableConfigurable
|
|
// Description : Defined as a fix to allow creating Configurable and
|
|
// Writeable objects. Otherwise the compilter gets
|
|
// confused since both TypedWriteable and Configurable
|
|
// inherit from TypedObject
|
|
//
|
|
// An object that has data or parameters that are set
|
|
// less frequently (at least occasionally) than every
|
|
// frame. We can cache the configuration info by
|
|
// by using the "dirty" flag.
|
|
////////////////////////////////////////////////////////////////////
|
|
class EXPCL_PANDA WriteableConfigurable : public TypedWriteable {
|
|
|
|
public:
|
|
WriteableConfigurable( void ) { make_dirty(); }
|
|
virtual void config( void ) { _dirty = false; }
|
|
INLINE void check_config() const {
|
|
if (_dirty) {
|
|
// This is a sneaky trick to allow check_config() to be called
|
|
// from a const member function. Even though we will be calling
|
|
// config(), a non-const function that modifies the class
|
|
// object, in some sense it's not really modifying the class
|
|
// object--it's just updating a few internal settings for
|
|
// consistency.
|
|
((WriteableConfigurable *)this)->config();
|
|
}
|
|
}
|
|
|
|
INLINE bool is_dirty(void) const { return _dirty; }
|
|
INLINE void make_dirty(void) { _dirty = true; }
|
|
|
|
private:
|
|
bool _dirty;
|
|
|
|
public:
|
|
virtual void write_datagram(BamWriter*, Datagram&) = 0;
|
|
|
|
PUBLISHED:
|
|
static TypeHandle get_class_type() {
|
|
return _type_handle;
|
|
}
|
|
|
|
public:
|
|
static void init_type() {
|
|
TypedWriteable::init_type();
|
|
register_type(_type_handle, "WriteableConfigurable",
|
|
TypedWriteable::get_class_type());
|
|
}
|
|
virtual TypeHandle get_type() const {
|
|
return get_class_type();
|
|
}
|
|
virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
|
|
|
|
|
|
private:
|
|
static TypeHandle _type_handle;
|
|
};
|
|
|
|
#endif
|