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/*
* File: flood_find.h
* Summary: flood_find template
*/
#ifndef FLOOD_FIND_H
#define FLOOD_FIND_H
#include "terrain.h"
#include "travel.h"
template <typename fgrd, typename bound_check>
class flood_find : public travel_pathfind
{
public:
flood_find(const fgrd &f, const bound_check &bc);
void add_feat(int feat);
void add_point(const coord_def &pos);
coord_def find_first_from(const coord_def &c, const map_mask &vlts);
bool points_connected_from(const coord_def &start);
bool any_point_connected_from(const coord_def &start);
bool has_exit_from(const coord_def &start);
bool did_leave_vault() const { return left_vault; }
protected:
bool path_flood(const coord_def &c, const coord_def &dc);
protected:
bool point_hunt, want_exit;
bool needed_features[NUM_FEATURES];
std::vector<coord_def> needed_points;
bool left_vault;
const map_mask *vaults;
const fgrd &fgrid;
const bound_check &bcheck;
};
template <typename fgrd, typename bound_check>
flood_find<fgrd, bound_check>::flood_find(const fgrd &f, const bound_check &bc)
: travel_pathfind(), point_hunt(false), want_exit(false),
needed_features(), needed_points(), left_vault(true), vaults(NULL),
fgrid(f), bcheck(bc)
{
memset(needed_features, false, sizeof needed_features);
}
template <typename fgrd, typename bound_check>
void flood_find<fgrd, bound_check>::add_feat(int feat)
{
if (feat >= 0 && feat < NUM_FEATURES)
needed_features[feat] = true;
}
template <typename fgrd, typename bound_check>
coord_def
flood_find<fgrd, bound_check>::find_first_from(
const coord_def &c,
const map_mask &vlts)
{
set_floodseed(c);
vaults = &vlts;
return pathfind(RMODE_EXPLORE);
}
template <typename fgrd, typename bound_check>
void flood_find<fgrd, bound_check>::add_point(const coord_def &c)
{
needed_points.push_back(c);
}
template <typename fgrd, typename bound_check>
bool flood_find<fgrd, bound_check>::points_connected_from(
const coord_def &sp)
{
if (needed_points.empty())
return (true);
set_floodseed(sp);
pathfind(RMODE_EXPLORE);
return (needed_points.empty());
}
template <typename fgrd, typename bound_check>
bool flood_find<fgrd, bound_check>::any_point_connected_from(
const coord_def &sp)
{
if (needed_points.empty())
return (true);
set_floodseed(sp);
const size_t sz = needed_points.size();
pathfind(RMODE_EXPLORE);
return (needed_points.size() < sz);
}
template <typename fgrd, typename bound_check>
bool flood_find<fgrd, bound_check>::has_exit_from(
const coord_def &sp)
{
want_exit = true;
set_floodseed(sp);
return (pathfind(RMODE_EXPLORE) == coord_def(-1, -1));
}
template <typename fgrd, typename bound_check>
bool flood_find<fgrd, bound_check>::path_flood(
const coord_def &c,
const coord_def &dc)
{
if (!bcheck(dc))
{
if (want_exit)
{
greedy_dist = 100;
greedy_place = coord_def(-1, -1);
return (true);
}
return (false);
}
if (!needed_points.empty())
{
std::vector<coord_def>::iterator i =
std::find(needed_points.begin(), needed_points.end(), dc);
if (i != needed_points.end())
{
needed_points.erase(i);
if (needed_points.empty())
return (true);
}
}
const dungeon_feature_type feat = fgrid(dc);
if (feat == NUM_FEATURES)
{
if (want_exit)
{
greedy_dist = 100;
greedy_place = coord_def(-1, -1);
return (true);
}
return (false);
}
if (needed_features[ feat ])
{
unexplored_place = dc;
unexplored_dist = traveled_distance;
return (true);
}
if (!feat_is_traversable(feat)
&& feat != DNGN_SECRET_DOOR
&& !feat_is_trap(feat))
{
return (false);
}
if (!left_vault && vaults && !(*vaults)[dc.x][dc.y])
left_vault = true;
good_square(dc);
return (false);
}
#endif
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