/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <element.h>

int update_VINE(UPDATE_FUNC_ARGS) {
	int r, np, rx =(rand()%3)-1, ry=(rand()%3)-1;
	if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
	{
		r = pmap[y+ry][x+rx];
		if (1>rand()%15)
			part_change_type(i,x,y,PT_PLNT);
		else if (!r)
		{
			np = create_part(-1,x+rx,y+ry,PT_VINE);
			if (np<0) return 0;
			parts[np].temp = parts[i].temp;
			parts[i].tmp = 1;
			part_change_type(i,x,y,PT_PLNT);
		}
	}
	return 0;
}