#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "Aw.h"

/**
 * Creates and initializes a new camera structure.
 *
 * The initialized structure must be manually destroyed using free().
 * The remaining fields of the camera are to be set by yourself.
 *
 * The value NULL may be specified for the camera name to indicate
 * that a name is not to be assigned.
 *
 * @param name String containing the camera's name.
 * @return An initialized aw_object_data_camera structure.
 */
aw_object_data_camera* new_camera(const char* name)
{
	size_t nlen = (name == NULL)? 0 : strlen(name);
	size_t psiz = nlen + sizeof(aw_object_data_camera);
	aw_object_data_camera* cam = NULL;

	cam = (aw_object_data_camera*)malloc(psiz);
	memset(cam, 0, psiz);

	cam->name_len = (unsigned char)(nlen);

	if (nlen != 0)
		memcpy(cam->str_data, name, nlen);

	return cam;
}

/**
 * Prepares an initialized camera structure to be built in the world.
 *
 * After calling this function use either the aw_object_add or
 * aw_object_load SDK methods after setting additional attributes
 * defining the location, etc.
 *
 * @param cam The object to be built.
 */
void prepare_camera(const aw_object_data_camera* cam)
{
	unsigned int psiz = 0;

	psiz = sizeof(aw_object_data_camera);
	psiz += cam->name_len;

	aw_string_set(AW_OBJECT_DESCRIPTION, "");
	aw_string_set(AW_OBJECT_ACTION, "");
	aw_int_set(AW_OBJECT_TYPE, AW_OBJECT_TYPE_CAMERA);
	aw_data_set(AW_OBJECT_DATA, (char*)(cam), psiz);
}