#ifndef GUIUPDATER_H
#define GUIUPDATER_H

#include "BulletDynamics/Dynamics/btDynamicsWorld.h"
#include "BulletCollision/CollisionShapes/btCollisionShape.h"

#include <vector>
#include <map>

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

using namespace std;

typedef struct {
	int id;
	btScalar m[16];
	btMatrix3x3 rot;
	btVector3 aabbMin, aabbMax;
} guiUpdateData;

typedef struct {
	int id;
	int numVertices;
	int numIndices;
	btVector3 *vertexPointer;
	int *indexPointer;
} guiAddData;

typedef struct {
	guiUpdateData *ud;
	guiAddData *ad;
} guiObject;

class GuiUpdater
{

private:
    int sockfd, portno;
    struct sockaddr_in serv_addr;
    struct hostent *server;

	void receiveData(int sock, void* buffer, size_t size);

	// unpacking data
	void* unpackInt(void *buffer, int &a);
	void* unpackScalar(void *buffer, btScalar &a);
	void* unpackVector3(void *buffer, btVector3 &v);
	void* unpackMatrix3x3(void *buffer, btMatrix3x3 &m);
	void unpackAddData(void *buffer, int n, map<int,guiAddData *> &addObjects);
	void unpackUpdateData(void *buffer, int n, map<int, guiUpdateData *> &updateObjects);

	void applyChanges(map<int, guiAddData *> addObjects, map<int, guiUpdateData *> updateObjects, int *removeObjects, int remObjNum);

public:
	map<int, guiObject *> m_cache;

	GuiUpdater(int port, hostent *serv);
	~GuiUpdater();

	void init();
	int update();
};

#endif