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/*
* File: terrain.h
* Summary: Terrain related functions.
* Written by: Linley Henzell
*/
#ifndef TERRAIN_H
#define TERRAIN_H
#include "enum.h"
#include <memory>
class actor;
struct coord_def;
typedef FixedArray<bool, GXM, GYM> map_mask_boolean;
// Precomputes slime wall neighbours for all squares on the map. Handy if
// you need to make a lot of slime wall checks (such as for travel).
class unwind_slime_wall_precomputer
{
public:
unwind_slime_wall_precomputer(bool docompute = true);
~unwind_slime_wall_precomputer();
private:
bool did_compute_mask;
};
actor* actor_at(const coord_def& c);
bool fall_into_a_pool( const coord_def& entry, bool allow_shift,
unsigned char terrain );
bool cell_is_solid(int x, int y);
bool cell_is_solid(const coord_def &c);
bool feat_is_wall(dungeon_feature_type feat);
bool feat_is_opaque(dungeon_feature_type feat);
bool feat_is_solid(dungeon_feature_type feat);
bool feat_is_floor(dungeon_feature_type feat);
bool feat_has_solid_floor(dungeon_feature_type feat);
bool feat_is_door(dungeon_feature_type feat);
bool feat_is_closed_door(dungeon_feature_type feat);
bool feat_is_secret_door(dungeon_feature_type feat);
bool feat_is_statue_or_idol(dungeon_feature_type feat);
bool feat_is_rock(dungeon_feature_type feat);
bool feat_is_permarock(dungeon_feature_type feat);
bool feat_is_stone_stair(dungeon_feature_type feat);
bool feat_is_staircase(dungeon_feature_type feat);
bool feat_is_escape_hatch(dungeon_feature_type feat);
bool feat_is_trap(dungeon_feature_type feat, bool undiscovered_too = false);
command_type feat_stair_direction(dungeon_feature_type feat);
bool feat_sealable_portal(dungeon_feature_type feat);
bool feat_is_portal(dungeon_feature_type feat);
bool feat_is_stair(dungeon_feature_type feat);
bool feat_is_travelable_stair(dungeon_feature_type feat);
bool feat_is_escape_hatch(dungeon_feature_type feat);
bool feat_is_gate(dungeon_feature_type feat);
std::string feat_preposition(dungeon_feature_type feat, bool active = false,
const actor* who = NULL);
std::string stair_climb_verb(dungeon_feature_type feat);
bool feat_is_water(dungeon_feature_type feat);
bool feat_is_watery(dungeon_feature_type feat);
god_type feat_altar_god(dungeon_feature_type feat);
dungeon_feature_type altar_for_god(god_type god);
bool feat_is_altar(dungeon_feature_type feat);
bool feat_is_player_altar(dungeon_feature_type grid);
bool feat_is_branch_stairs(dungeon_feature_type feat);
bool feat_is_bidirectional_portal(dungeon_feature_type feat);
void find_connected_identical(const coord_def& d, dungeon_feature_type ft,
std::set<coord_def>& out);
void find_connected_range(const coord_def& d, dungeon_feature_type ft_min,
dungeon_feature_type ft_max,
std::set<coord_def>& out);
std::set<coord_def> connected_doors(const coord_def& d);
bool slime_wall_neighbour(const coord_def& c);
void get_door_description(int door_size, const char** adjective,
const char** noun);
// Returns info about the grid a secret door is mimicing. Returns true
// if it finds a grid position to mimic, which will be stored in gc.
// feat will always be set, even if no square to mimic is found.
bool find_secret_door_info(const coord_def &where,
dungeon_feature_type *feat,
coord_def *gc);
dungeon_feature_type grid_secret_door_appearance(const coord_def &where);
dungeon_feature_type grid_appearance(const coord_def &gc);
bool feat_destroys_item(dungeon_feature_type feat, const item_def &item, bool noisy = false);
// Terrain changed under 'pos', perform necessary effects.
void dungeon_terrain_changed(const coord_def &pos,
dungeon_feature_type feat = DNGN_UNSEEN,
bool affect_player = true,
bool preserve_features = false,
bool preserve_items = false);
// Moves everything on the level at src to dst.
void dgn_move_entities_at(coord_def src,
coord_def dst,
bool move_player,
bool move_monster,
bool move_items);
bool swap_features(const coord_def &pos1, const coord_def &pos2,
bool swap_everything = false, bool announce = true);
bool slide_feature_over(const coord_def &src,
coord_def prefered_dest = coord_def(-1, -1),
bool announce = true);
bool is_critical_feature(dungeon_feature_type feat);
void init_feat_desc_cache();
dungeon_feature_type feat_by_desc(std::string desc);
dungeon_feature_type dungeon_feature_by_name(const std::string &name);
std::vector<std::string> dungeon_feature_matches(const std::string &name);
const char *dungeon_feature_name(dungeon_feature_type rfeat);
#endif
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