92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "ultima/nuvie/pathfinder/path.h"
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#include "ultima/nuvie/pathfinder/path_finder.h"
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namespace Ultima {
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namespace Nuvie {
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PathFinder::PathFinder() : start(0, 0, 0), goal(0, 0, 0), loc(0, 0, 0), search(0) {
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}
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PathFinder::PathFinder(const MapCoord &s, const MapCoord &g)
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: start(s), goal(g), loc(0, 0, 0), search(0) {
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}
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PathFinder::~PathFinder() {
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delete search;
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}
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bool PathFinder::check_dir(const MapCoord &from, MapCoord &rel, sint8) {
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return check_loc(MapCoord(from.x + rel.sx, from.y + rel.sy, from.z));
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}
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bool PathFinder::check_loc(uint16 x, uint16 y, uint8 z) {
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return check_loc(MapCoord(x, y, z));
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}
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void PathFinder::new_search(Path *new_path) {
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delete search;
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search = new_path;
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search->set_pathfinder(this);
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}
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bool PathFinder::find_path() {
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if (search) {
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if (search->have_path())
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search->delete_path();
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return (search->path_search(loc, goal));
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}
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return false; // no path-search object
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}
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bool PathFinder::have_path() {
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return (search && search->have_path());
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}
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void PathFinder::set_goal(const MapCoord &g) {
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goal = g;
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if (have_path())
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search->delete_path();
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}
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void PathFinder::set_start(const MapCoord &s) {
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start = s;
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if (have_path())
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search->delete_path();
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}
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bool PathFinder::is_path_clear() {
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uint32 num_steps = search->get_num_steps();
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for (unsigned int n = 0; n < num_steps; n++) {
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const MapCoord &pos = search->get_step(n);
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if (!check_loc(pos))
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return false;
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}
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return true;
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}
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} // End of namespace Nuvie
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} // End of namespace Ultima
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