#include <stdio.h>
#include <stdlib.h>

#include "adventure.h"

int
move_object(struct param *par, struct object *from, struct object *to)
{
	struct object *obj = par->object;
	enum distance dist = par->distance;

	if (obj == NULL || dist == dist_unknown_obj || dist == dist_not_here)
		printf("I don't understand what item you mean.\n");
	else if (to == NULL)
		printf("There is nobody here to give that to.\n");
	else if (obj == to)
		printf("What's the meaning of putting a %s inside itself?\n",
			par->tag);
	else if (from != obj->location) {
		/* give the appropriate error message */
		switch (dist) {
		case dist_player:
			printf("You should not be doing that to yourself.\n");
			break;

		case dist_held:
			printf("You already have %s.\n", obj->description);
			break;

		case dist_location:
		case dist_overthere:
			printf("That's not an item.\n");
			break;

		case dist_here:
			if (from == player)
				printf("You have no %s.\n", par->tag);
			else
				printf("Sorry, %s has no %s.\n",
					from->description, par->tag);
			break;

		case dist_held_contained:
		case dist_here_contained:
			printf("Sorry, %s is holding it.\n",
				obj->location->description);
			break;

		default:
			/* we should have handled all other cases
			 * before this point */
			abort();
		}
	} else if (obj->weight > to->capacity) {
		printf("That is way too heavy.\n");
	} else if (obj->weight + weight_of_contents(to) > to->capacity) {
		printf("That would becamo too heavy.\n");
	} else {
		obj->location = to;
		printf("OK.\n");
	}

	return 1;
}