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(Sorry for all the source boxes - only way to read it nicely [headshake]) Ok so I've had quite a few ideas recently that just have not worked out. So I decided to start at the point at which they failed - messaging. Now I would like to make an easy way to be able to have all my objects interact with each other. Don't ask me why, I just want to see if this concept is possible. So before I begin, I know a lot of people who see this code are going to have heart attacks - I am 100% aware of safety issues, I just want you to know that. Here's the idea - I start out with having a generic messaging structure - Now some important things to point out. It contains a std::map of function pointers. This is part of the messaging system, as you will see shortly. Now as for function implemtations, there are two main functions that are the most important - When ran, the output is: Now idealy, an Object Factory would be used so there would not be an explicit Box variable, but this is just a quick demo. What are your reactions to this idea? Sound promising or too much hassal (in terms of use, I'm the one programming it [wink]). Thanks for your time! Unlike my other posts, I will try not to actively defend anything brought up - I will let a few responses be made then reply to them, just so it doesn't grow to such a large size that no one want's to read it (like my last post [lol]) I am open to ALL comments and suggestions - I want to hear what you developers think. - Drew [Edited by - Drew_Benton on March 31, 2005 6:24:59 PM]
(Sorry for all the source boxes - only way to read it nicely [headshake]) Ok so I've had quite a few ideas recently that just have not worked out. So I decided to start at the point at which they failed - messaging. Now I would like to make an easy way to be able to have all my objects interact with each other. Don't ask me why, I just want to see if this concept is possible. So before I begin, I know a lot of people who see this code are going to have heart attacks - I am 100% aware of safety issues, I just want you to know that. Here's the idea - I start out with having a generic messaging structure -
<blockquote>
struct IMessage
{
std::vector<void*> ptr;
};
</blockquote>
class Actor
{
private:
typedef void (Actor::*ActorPtr)( const IMessage *data );
ActorPtr mActorPtr;
std::map< std::string, Actor::ActorPtr> Functions;
public:
Actor();
~Actor();
virtual void Create( const IMessage *data = 0 );
virtual void Render( const IMessage *data = 0 );
virtual void Destroy( const IMessage *data = 0 );
virtual void Message( std::string message, const IMessage *data = 0);
};
<blockquote>
void Actor::Message( std::string message, const IMessage *data )
{
if( Functions.find( message ) != Functions.end() )
{
(this->*Functions[ message ])( data );
}
else
{
std::cout << std::endl << "Non processed message: " << message << std::endl;
}
}</blockquote> <blockquote>
Actor::Actor()
{
Functions["Create"] = &Actor::Create;
Functions["Render"] = &Actor::Render;
Functions["Destroy"] = &Actor::Destroy;
}
</blockquote> <blockquote>
Actor A1;
A1.Message("Create");
A1.Message("Render");
A1.Message("Destroy");
</blockquote> <blockquote>
IMessage tmp;
tmp.ptr.resize( 1, 0 );
tmp.ptr[0] = (void*)("This is a test");
A1.Message("Print", &tmp );
</blockquote>
#include "Actor.h"
Actor *Actor1;
Box B1;
int main( int argc, char* argv[] )
{
Actor1 = &B1
Actor1->Message( "Create" );
IMessage tmp;
tmp.ptr.resize( 1, 0 );
tmp.ptr[0] = (void*)("File1.bmp");
Actor1->Message( "SetTexture", &tmp );
Actor1->Message( "12345" );
tmp.ptr.resize( 3, 0 );
tmp.ptr[0] = (void*)("5");
tmp.ptr[1] = (void*)("0");
tmp.ptr[2] = (void*)("-8");
Actor1->Message( "SetPosition", &tmp );
tmp.ptr.resize( 3, 0 );
float x = 0.25f, y = 1.0f, z = -0.75f;
tmp.ptr[0] = (void*)(&x);
tmp.ptr[1] = (void*)(&y);
tmp.ptr[2] = (void*)(&z);
Actor1->Message( "SetRotate", &tmp );
Actor1->Message( "Render" );
Actor1->Message( "Destroy" );
return 0;
}
Call to Box::Create
Call to Box::SetTexture
FileName: File1.bmp
Non processed message: 12345
Call to Box::SetPosition
X: 5
Y: 0
Z: -8
Call to Box::SetRotate
X: 0.25
Y: 1
Z: -0.75
Call to Box::Render
Call to Box::Destroy
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