#include <string.h>

#include "tunnelboden.h"

#include "../simimg.h"
#include "../simworld.h"
#include "../player/simplay.h"
#include "../simskin.h"

#include "../bauer/tunnelbauer.h"

#include "../dataobj/loadsave.h"
#include "../dings/tunnel.h"

#include "../besch/grund_besch.h"
#include "../besch/skin_besch.h"
#include "../besch/tunnel_besch.h"



tunnelboden_t::tunnelboden_t(karte_t *welt, loadsave_t *file, koord pos ) : boden_t(welt, koord3d(pos,0), 0)
{
	rdwr(file);

	// some versions had tunnel without tunnel objects
	if (!find<tunnel_t>()) {
		// then we must spawn it here (a way MUST be always present, or the savegame is completely broken!)
		weg_t *weg=(weg_t *)obj_bei(0);
		obj_add(new tunnel_t(welt, get_pos(), weg->get_besitzer(), tunnelbauer_t::find_tunnel( (waytype_t)weg->get_besch()->get_wtyp(), 450, 0 ) ) );
		DBG_MESSAGE("tunnelboden_t::tunnelboden_t()","added tunnel to pos (%i,%i,%i)",get_pos().x, get_pos().y,get_pos().z);
	}
}



void
tunnelboden_t::calc_bild_internal()
{
	// tunnel mouth
	if (ist_karten_boden()) {
		if (grund_t::underground_mode==grund_t::ugm_all || (grund_t::underground_mode==grund_t::ugm_level && pos.z==grund_t::underground_level)) {
			if (grund_t::underground_mode==grund_t::ugm_all) {
				clear_back_bild();
			}
			else {
				boden_t::calc_bild_internal();
			}
			// default tunnel ground images
			set_bild(skinverwaltung_t::fussweg->get_bild_nr(0));
			clear_flag(draw_as_ding);
		}
		else {
			// calculate the ground
			boden_t::calc_bild_internal();
			set_flag(draw_as_ding);
		}

		if (grund_t::underground_mode == grund_t::ugm_none) {
			if(  (get_grund_hang()==hang_t::west  &&  abs(back_bild_nr)>11)  ||  (get_grund_hang()==hang_t::nord  &&  get_back_bild(0)!=IMG_LEER)  ) {
				// must draw as ding, since there is a slop here nearby
				koord pos = get_pos().get_2d()+koord(get_grund_hang());
				grund_t *gr = welt->lookup_kartenboden(pos);
				gr->set_flag(grund_t::draw_as_ding);
			}
		}
	}
	// inside tunnel
	else {
		clear_back_bild();
		if (is_visible()) {
			// default tunnel ground images
			set_bild(skinverwaltung_t::fussweg->get_bild_nr(get_disp_slope()));
		}
		else {
			set_bild(IMG_LEER);
		}
	}
}



void
tunnelboden_t::rdwr(loadsave_t *file)
{
	xml_tag_t t( file, "tunnelboden_t" );

	grund_t::rdwr(file);

	if(file->get_version()<88009) {
		uint32 int_hang = slope;
		file->rdwr_long(int_hang, "\n");
		slope = int_hang;
	}

	// only 99.03 version save the tunnel here
	if(file->get_version()==99003) {
		char  buf[256];
		const tunnel_besch_t *besch = NULL;
		file->rdwr_str(buf,255);
		if (find<tunnel_t>() == NULL) {
			besch = tunnelbauer_t::get_besch(buf);
			if(besch) {
				obj_add(new tunnel_t(welt, get_pos(), obj_bei(0)->get_besitzer(), besch));
			}
		}
	}
}
