Press n or j to go to the next uncovered block, b, p or k for the previous block.
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736x 736x 736x 736x 139x 139x 885x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 137x 137x 885x 137x 137x 137x 971x 1x 1x 1x 1x 1x 1x 1x 136x 136x 885x 2x 2x 2x 2x 2x 2x 134x 971x 971x 27x 27x 27x 5x 5x 3x 3x 3x 5x 5x 24x 7x 7x 7x 27x 27x 22x 22x 22x 22x 22x 22x 22x 22x 107x 107x 107x 107x 971x 66x 60x 60x 46x 46x 46x 46x 46x 14x 66x 6x 6x 6x 6x 6x 20x 20x 20x 971x 971x 971x 96x 96x 96x 5x 5x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 98x | // getpos.js — Position selection routines (port of getpos.c)
// Handles cursor-based position picking for targeting, looking, etc.
// No RNG consumed in any function.
import { game } from './gstate.js';
import { bot, docrt, flush_screen, glyph_at, terrain_sym_color, tty_clear_nhwindow } from './display.js';
import { glyph_is_cmap, glyph_is_object, glyph_to_cmap, cmap_to_glyph } from './glyph.js';
import { nhgetch } from './input.js';
import { COLNO, DOOR, ROWNO, SDOOR, VIBRATING_SQUARE, GFILTER_VIEW, TER_DETECT, TER_MAP, TER_MON, TER_OBJ, isok, NO_CURS_ON_U, OVERRIDE_MSGTYPE, SUPPRESS_HISTORY } from './const.js';
import { custompline, pline } from './pline.js';
import { lookat, do_screen_description_async } from './pager.js';
import { add_menu, add_menu_str, create_nhwindow_menu, destroy_nhwindow_menu, end_menu, select_menu } from './menu.js';
import { defsyms, S_air, S_bars, S_cloud, S_engroom, S_ice, S_ndoor, S_stone, S_tree } from './symbols.js';
import { is_cmap_corr, is_cmap_door, is_cmap_drawbridge, is_cmap_engraving, is_cmap_room, is_cmap_trap, is_cmap_wall, is_cmap_lava, is_cmap_water, pchar_sym } from './drawing.js';
import { t_at, obj_at } from './map_access.js';
import { cansee } from './vision.js';
import { is_valid_travelpt } from './hack.js';
import { GLOC_DOOR, GLOC_EXPLORE, GLOC_INTERESTING, GLOC_MONS, GLOC_OBJS, GLOC_VALID, GFILTER_AREA } from './const.js';
import { BOULDER, ROCK } from './objects.js';
let getpos_hilite = null;
let getpos_valid = null;
// C ref: getpos.c:40 getpos_sethilite
export function getpos_sethilite(f, g) {
getpos_hilite = f || null;
getpos_valid = g || null;
}
// C ref: getpos.c:93 mapxy_valid
export function mapxy_valid(x, y) {
return x >= 1 && x < COLNO && y >= 0 && y < ROWNO;
}
// C ref: getpos.c:166 getpos_help — async (putstr)
// Displays a text window with targeting instructions, waits for dismiss.
export async function getpos_help(force, goal) {
// C ref: getpos.c:getpos_help() — creates NHW_MENU and writes a
// substantial putstr help block whose exact geometry affects tty
// menu placement/dismiss events (offx/maxrow/docorner shape).
const win = create_nhwindow_menu();
win.textLikePrompt = true;
win.putstrLikeWidth = true;
const targetGoal = goal || 'desired location';
const moveSkip = game.iflags?.getloc_moveskip ? 'skipping same glyphs' : '8 units at a time';
const terrainmode = game.iflags?.terrainmode || 0;
add_menu_str(win, `Use 'h', 'j', 'k', 'l' to move the cursor to ${targetGoal}.`);
add_menu_str(win, `Use 'H', 'J', 'K', 'L' to fast-move the cursor, ${moveSkip}.`);
add_menu_str(win, "(or prefix normal move with 'G' or 'g' to fast-move)");
add_menu_str(win, "Or enter a background symbol (ex. '<').");
add_menu_str(win, "Use '@' to move the cursor on yourself.");
if (!terrainmode || (terrainmode & TER_MON) !== 0) {
add_menu_str(win, "Use 'm'/'M' to move the cursor to next/previous monster.");
}
if (targetGoal !== 'a monster') {
if (!terrainmode || (terrainmode & TER_OBJ) !== 0) {
add_menu_str(win, "Use 'o'/'O' to move the cursor to next/previous object.");
}
if (!terrainmode || (terrainmode & TER_MAP) !== 0) {
add_menu_str(win, "Use 'd'/'D' to move the cursor to next/previous door or doorway.");
add_menu_str(win, "Use 'x'/'X' to move the cursor next to an unexplored location.");
add_menu_str(win, "Use 'a'/'A' to move the cursor to anything interesting.");
}
}
add_menu_str(win, "Use '*' to change fast-move mode to skipping same glyphs.");
if (!terrainmode || (terrainmode & TER_DETECT) === 0) {
add_menu_str(win, "Use '!' to toggle menu listing for possible targets.");
add_menu_str(win, "Use '\"' to change the mode of limiting possible targets.");
}
if (!terrainmode) {
add_menu_str(win, "Use '#' to toggle automatic description.");
add_menu_str(win, "Type a '.' when you are at the right place.");
}
if (!force) {
add_menu_str(win, "Type Space or Escape when you're done.");
}
add_menu_str(win, '');
end_menu(win, '');
await select_menu(win, 0); // PICK_NONE — just display and wait for dismiss
destroy_nhwindow_menu(win);
}
// C ref: getpos.c:312 cmp_coord_distu — Chebyshev distance from hero, with
// (y then x) lexical tiebreak. NOT Euclidean — getpos picks nearest in
// king-move steps (max of |dx|,|dy|).
export function cmp_coord_distu(a, b) {
const u = game.u;
const d1 = Math.max(Math.abs(u.ux - a.x), Math.abs(u.uy - a.y));
const d2 = Math.max(Math.abs(u.ux - b.x), Math.abs(u.uy - b.y));
if (d1 !== d2) return d1 - d2;
if (a.y !== b.y) return a.y - b.y;
return a.x - b.x;
}
// C ref: getpos.c:438 gather_locs_interesting
// Returns true if (x,y) is an interesting location for the given gloc category.
// Uses the remembered glyph at (x,y). C: levl[x][y].glyph; JS: loc.glyph
// (canonical int, gbuf-cleanup Phase 6a) — cmap cells decode to an S_*
// symbol index via glyph_to_cmap.
export function gather_locs_interesting(x, y, gloc) {
const level = game.level;
const loc = level?.at?.(x, y);
if (!loc) return false;
// C ref: getpos.c:444 — GFILTER_VIEW only includes currently-visible cells
const filter = game.iflags?.getloc_filter ?? 0;
if (filter === GFILTER_VIEW && !cansee(x, y)) return false;
// GFILTER_AREA check (gloc_filter_map): not yet ported; treat as no-op
// Figure out the remembered glyph and its cmap symbol
const mon = level.monsterAt?.(x, y) || null;
const memG = loc.glyph;
const isCmapMem = glyph_is_cmap(memG);
const symidx = isCmapMem ? glyph_to_cmap(memG) : -1;
const hasCmap = isCmapMem && symidx !== S_stone;
const isObjMem = glyph_is_object(memG);
switch (gloc) {
default:
case GLOC_MONS:
// visible monster (not hero, not worm-tail)
return !!mon && !mon.worm_tail;
case GLOC_OBJS:
// C checks the currently shown glyph (glyph_is_object), excluding
// boulders/rocks.
if (!isObjMem) return false;
{
const otmp = obj_at(x, y);
if (!otmp) return false;
return otmp.otyp !== BOULDER && otmp.otyp !== ROCK;
}
case GLOC_DOOR:
if (!hasCmap) return false;
return is_cmap_door(symidx) || is_cmap_drawbridge(symidx) || symidx === S_ndoor;
case GLOC_EXPLORE: {
// Walkable terrain cell (room/corr/door) adjacent to an unexplored cell
if (!hasCmap) return false;
const isWalkable = is_cmap_door(symidx) || is_cmap_drawbridge(symidx)
|| symidx === S_ndoor || is_cmap_room(symidx) || is_cmap_corr(symidx);
if (!isWalkable) return false;
return IS_UNEXPLORED_LOC(x + 1, y) || IS_UNEXPLORED_LOC(x - 1, y)
|| IS_UNEXPLORED_LOC(x, y + 1) || IS_UNEXPLORED_LOC(x, y - 1);
}
case GLOC_VALID:
// No getpos_getvalid callback in JS yet; fall through
case GLOC_INTERESTING: {
// C ref: a cell is "interesting" if:
// - it's a door/drawbridge (GLOC_DOOR), OR
// - the shown glyph is NOT boring terrain/nothing/unexplored, OR
// - it's the known vibrating square.
if (gather_locs_interesting(x, y, GLOC_DOOR)) return true;
// Vibrating square
const trap = t_at(x, y);
if (trap && trap.ttyp === VIBRATING_SQUARE && trap.tseen) return true;
// Visible monster → interesting
if (mon) return true;
// Object memory at this cell counts
if (isObjMem) return true;
if (obj_at(x, y) && loc.seenv) return true;
// Terrain-only cell: interesting unless it's plain walkable/wall/etc
if (!hasCmap) return false;
const boring = is_cmap_wall(symidx)
|| symidx === S_tree || symidx === S_bars
|| symidx === S_ice || symidx === S_air || symidx === S_cloud
|| is_cmap_lava(symidx) || is_cmap_water(symidx)
|| symidx === S_ndoor
|| is_cmap_room(symidx) || is_cmap_corr(symidx);
return !boring;
}
}
}
// C ref: getpos.c:331 IS_UNEXPLORED_LOC macro —
// cell is valid, glyph is unexplored (no remembered glyph or remembered as stone),
// and never been seen.
function IS_UNEXPLORED_LOC(x, y) {
if (!(x >= 1 && x < COLNO && y >= 0 && y < ROWNO)) return false;
const loc = game.level?.at?.(x, y);
if (!loc) return true; // off-map counts as unexplored
if (loc.seenv) return false;
// C: IS_UNEXPLORED_LOC checks levl[x][y].glyph for stone/no-memory.
const stoneG = cmap_to_glyph(S_stone);
return loc.glyph == null || loc.glyph === stoneG;
}
// C ref: getpos.c:513 gather_locs — gather map positions matching gloc category
export function gather_locs(gloc) {
const u = game.u;
const points = [{ x: u.ux, y: u.uy }]; // C: garr[][0] is hero spot
for (let x = 1; x < COLNO; x++) {
for (let y = 0; y < ROWNO; y++) {
if (x === u.ux && y === u.uy) continue;
if (gather_locs_interesting(x, y, gloc)) {
points.push({ x, y });
}
}
}
points.sort(cmp_coord_distu);
return points;
}
// C ref: getpos.c:557 dxdy_to_dist_descr
export function dxdy_to_dist_descr(dx, dy, cmode) {
return '';
}
// C ref: getpos.c:595 coord_desc
export function coord_desc(x, y, outbuf, cmode) {
return `<${x},${y}>`;
}
// C ref: getpos.c:640 auto_describe — async
export async function auto_describe(cx, cy) {
// C ref: getpos.c:auto_describe() builds its message with
// is_valid_travelpt() side effects before output.
let msg = lookat(cx, cy);
if (!msg) return;
if (getpos_valid) {
const ok = await getpos_valid(cx, cy);
if (!ok) msg += ' (invalid target)';
}
if (game.iflags?.getloc_travelmode && !(await is_valid_travelpt(cx, cy))) {
msg += ' (no travel path)';
}
await custompline(SUPPRESS_HISTORY | OVERRIDE_MSGTYPE | NO_CURS_ON_U, '%s', msg);
game.getposx = cx;
game.getposy = cy;
// C ref: curs(WIN_MAP, cx, cy) before flush_screen(0)
const disp = game?.nhDisplay;
if (disp) disp.setCursor(cx - 1, cy + 1);
await flush_screen(0);
}
// C ref: getpos.c:660 — gloc_descr[gloc] descriptions
const gloc_descr = [
['any monsters', 'a monster'],
['any objects', 'an object'],
['any doors or openings', 'a door or opening'],
['any unexplored areas', 'an unexplored area'],
];
// C ref: getpos.c:665 getpos_menu — show a selection menu for mMoOdDxX targets
export async function getpos_menu(ccp, gloc) {
const garr = gather_locs(gloc);
if (!garr || garr.length < 2) {
// garr[0] is always the hero; need at least one non-hero target
const filterVerb = (game.iflags?.getloc_filter === GFILTER_VIEW) ? 'see' : 'detect';
await pline(`You cannot ${filterVerb} ${gloc_descr[gloc]?.[0] || 'anything'}.`);
return false;
}
const tmpwin = create_nhwindow_menu();
// Skip garr[0] (hero position)
for (let i = 1; i < garr.length; i++) {
const cc = { x: garr[i].x, y: garr[i].y };
const out = {};
const fm = { value: 'unknown' };
await do_screen_description_async(cc, true, 0, out, fm, null);
const firstmatch = fm.value || 'unknown';
const coordStr = coord_desc(cc.x, cc.y, '', game.iflags?.getpos_coords || 0);
const label = firstmatch + (coordStr ? ' ' + coordStr : '');
add_menu(tmpwin, i + 1, 0, 0, 0, 8 /* NO_COLOR */, label);
}
const prompt = `Pick ${gloc_descr[gloc]?.[1] || 'a target'}${game.iflags?.getloc_travelmode ? ' for travel destination' : ''}`;
end_menu(tmpwin, prompt);
const picks = await select_menu(tmpwin, 1); // PICK_ONE
destroy_nhwindow_menu(tmpwin);
if ((picks?.count || 0) > 0 && (picks?.items?.length || 0) > 0) {
const idx = (picks.items[0].identifier | 0) - 1;
ccp.x = garr[idx].x;
ccp.y = garr[idx].y;
return true;
}
return false;
}
// C ref: getpos.c:729 truncate_to_map
export function truncate_to_map(cc, dx, dy) {
cc.x = Math.max(1, Math.min(cc.x + dx, COLNO - 2));
cc.y = Math.max(0, Math.min(cc.y + dy, ROWNO - 1));
}
// Direction key to dx,dy mapping for getpos cursor movement
function getpos_direction(ch) {
switch (ch) {
case 'h': case 4: return { dx: -1, dy: 0, fast: false };
case 'j': case 2: return { dx: 0, dy: 1, fast: false };
case 'k': case 8: return { dx: 0, dy: -1, fast: false };
case 'l': case 6: return { dx: 1, dy: 0, fast: false };
case 'y': case 7: return { dx: -1, dy: -1, fast: false };
case 'u': case 9: return { dx: 1, dy: -1, fast: false };
case 'b': case 1: return { dx: -1, dy: 1, fast: false };
case 'n': case 3: return { dx: 1, dy: 1, fast: false };
case 'H': return { dx: -1, dy: 0, fast: true };
case 'J': return { dx: 0, dy: 1, fast: true };
case 'K': return { dx: 0, dy: -1, fast: true };
case 'L': return { dx: 1, dy: 0, fast: true };
case 'Y': return { dx: -1, dy: -1, fast: true };
case 'U': return { dx: 1, dy: -1, fast: true };
case 'B': return { dx: -1, dy: 1, fast: true };
case 'N': return { dx: 1, dy: 1, fast: true };
// Ctrl+direction rush keys (C movecmd(..., MV_RUSH))
case 0x08: return { dx: -1, dy: 0, fast: true }; // Ctrl-H
case 0x0a: return { dx: 0, dy: 1, fast: true }; // Ctrl-J / LF
case 0x0b: return { dx: 0, dy: -1, fast: true }; // Ctrl-K
case 0x0c: return { dx: 1, dy: 0, fast: true }; // Ctrl-L
case 0x19: return { dx: -1, dy: -1, fast: true }; // Ctrl-Y
case 0x15: return { dx: 1, dy: -1, fast: true }; // Ctrl-U
case 0x02: return { dx: -1, dy: 1, fast: true }; // Ctrl-B
case 0x0e: return { dx: 1, dy: 1, fast: true }; // Ctrl-N
default: return null;
}
}
function has_matching_feature_symbol(c) {
if (!c) return false;
const roomEngraving = pchar_sym(S_engroom).ch;
let k = 0;
for (let sidx = 0; sidx < defsyms.length; sidx++) {
// C ref: getpos.c:1048-1051
if (is_cmap_wall(sidx) || is_cmap_room(sidx) || is_cmap_corr(sidx)
|| is_cmap_door(sidx) || sidx === S_ndoor) {
continue;
}
if (c === defsyms[sidx].ch
|| c === pchar_sym(sidx).ch
|| (c === '^' && is_cmap_trap(sidx))
|| (c === roomEngraving && is_cmap_engraving(sidx))) {
k++;
}
}
return k > 0;
}
function matching_feature_table(c) {
const matching = new Array(defsyms.length).fill(false);
const roomEngraving = pchar_sym(S_engroom).ch;
for (let sidx = 0; sidx < defsyms.length; sidx++) {
// C ref: getpos.c:1048-1051
if (is_cmap_wall(sidx) || is_cmap_room(sidx) || is_cmap_corr(sidx)
|| is_cmap_door(sidx) || sidx === S_ndoor) {
continue;
}
if (c === defsyms[sidx].ch
|| c === pchar_sym(sidx).ch
|| (c === '^' && is_cmap_trap(sidx))
|| (c === roomEngraving && is_cmap_engraving(sidx))) {
matching[sidx] = true;
}
}
return matching;
}
function cell_matches_feature_symbol(c, matching, tx, ty) {
// C pass 1: currently shown glyph (might be monster-appearance cmap).
// glyph_at now returns a canonical int; `matching` is indexed by the
// cmap-subset S_* so we decode via glyph_to_cmap when applicable.
const shown = glyph_at(tx, ty);
if (glyph_is_cmap(shown)) {
const sym = glyph_to_cmap(shown);
if (Number.isInteger(sym) && sym >= 0 && sym < matching.length
&& matching[sym]) {
return true;
}
}
const level = game.level;
const loc = level?.at?.(tx, ty);
if (!loc) return false;
// C pass 2: remembered glyph (if hero memory and not terrainmode).
// gbuf-cleanup: decode loc.glyph (canonical int) to cmap symidx.
if (level?.flags?.hero_memory && glyph_is_cmap(loc.glyph)) {
const remembered = glyph_to_cmap(loc.glyph);
if (Number.isInteger(remembered) && remembered >= 0
&& remembered < matching.length
&& matching[remembered]) {
return true;
}
}
// C pass 3 special case: known vibrating square keyed by '~'
if (c === '~') {
const trap = t_at(tx, ty);
if (trap && trap.ttyp === VIBRATING_SQUARE && trap.tseen) {
return true;
}
}
// C pass 4: actual seen terrain (back_to_glyph equivalent)
if (loc.seenv) {
const terrain = terrain_sym_color(loc, tx, ty);
const terrainSym = terrain?.symidx;
if (Number.isInteger(terrainSym) && terrainSym >= 0
&& terrainSym < matching.length
&& matching[terrainSym]) {
return true;
}
}
return false;
}
function find_feature_symbol_target(c, cx, cy) {
const level = game.level;
if (!level) return null;
const matching = matching_feature_table(c);
if (!matching.some(Boolean)) return null;
for (let pass = 0; pass <= 1; pass++) {
const loY = pass === 0 ? cy : 0;
const hiY = pass === 0 ? ROWNO - 1 : cy;
for (let ty = loY; ty <= hiY; ty++) {
const loX = (pass === 0 && ty === loY) ? (cx + 1) : 1;
const hiX = (pass === 1 && ty === hiY) ? cx : (COLNO - 1);
for (let tx = loX; tx <= hiX; tx++) {
if (cell_matches_feature_symbol(c, matching, tx, ty)) {
return { x: tx, y: ty };
}
}
}
}
return null;
}
// C ref: getpos.c:771 getpos — async (main position selection loop)
// Faithful port of C's getpos(). Reads keys in a loop for cursor-based
// position selection. Returns result code:
// -1 = cancelled (ESC), 0+ = picked (LOOK_TRADITIONAL, etc.)
export async function getpos(ccp, force, goal) {
if (!goal) goal = 'desired location';
const u = game.u;
let cx = ccp?.x ?? (u?.ux ?? 1);
let cy = ccp?.y ?? (u?.uy ?? 1);
let result = 0;
let msg_given = true;
// C ref: getpos.c:774 mMoOdDxX_def — order matches GLOC_MONS..GLOC_VALID.
// Pair index k → gloc = k>>1. NEXT = even, PREV = odd.
const mMoOdDxX = 'mMoOdDxXaAzZ';
const garr = [null, null, null, null, null, null];
const gidx = [0, 0, 0, 0, 0, 0];
// C ref: getpos.c:838 — handle_tip(TIP_GETPOS) shows a tip on first use.
// C calls l_nhcore_call(NHCORE_GETPOS_TIP) → Lua show_getpos_tip()
// which uses nh.text() to display a multi-line text window.
let show_goal_msg = false;
if (game.flags?.tips !== false && !game.context?.tips_getpos) {
game.context = game.context || {};
game.context.tips_getpos = true;
// C ref: nhcore.lua:108 show_getpos_tip() — nh.text([[...]])
// Display a text window with the tip, wait for dismiss.
const tipWin = create_nhwindow_menu();
add_menu_str(tipWin, 'Tip: Farlooking or selecting a map location');
add_menu_str(tipWin, '');
add_menu_str(tipWin, 'You are now in a "farlook" mode - the movement keys move the cursor,');
add_menu_str(tipWin, 'not your character. Game time does not advance. This mode is used');
add_menu_str(tipWin, 'to look around the map, or to select a location on it.');
add_menu_str(tipWin, '');
add_menu_str(tipWin, 'When in this mode, you can press ESC to return to normal game mode,');
add_menu_str(tipWin, 'and pressing ? will show the key help.');
end_menu(tipWin, '');
await select_menu(tipWin, 0); // PICK_NONE — display and wait
destroy_nhwindow_menu(tipWin);
show_goal_msg = true; // tip has overwritten prompt in mesg window
}
// C ref: getpos.c:843 — verbose mode shows instruction hint
if (game.flags?.verbose) {
await pline("(For instructions type a '?')");
msg_given = true;
}
// C ref: getpos.c:853 — position cursor and flush
game.getposx = cx;
game.getposy = cy;
// C ref: curs(WIN_MAP, cx, cy) — position cursor at target
const display = game?.nhDisplay;
if (display) display.setCursor(cx - 1, cy + 1);
await flush_screen(0);
if (getpos_hilite) await getpos_hilite(true);
// C ref: getpos.c:859 — main input loop
for (;;) {
// C ref: getpos.c:860-864 — show goal message if tip was displayed
if (show_goal_msg) {
await pline(`Move cursor to ${goal}:`);
// C ref: getpos.c:862 — curs(WIN_MAP, cx, cy) after pline
if (display) display.setCursor(cx - 1, cy + 1);
await flush_screen(0);
show_goal_msg = false;
} else if ((game.iflags?.autodescribe ?? true) && !msg_given) {
await auto_describe(cx, cy);
}
// C ref: getpos.c:860 — curs(WIN_MAP, cx, cy) before nhgetch.
// Ensures cursor is at target for every capture point.
if (display) display.setCursor(cx - 1, cy + 1);
const rawCh = await nhgetch();
const ch = typeof rawCh === 'number' ? rawCh : (typeof rawCh === 'string' ? rawCh.charCodeAt(0) : rawCh);
const charStr = (ch >= 32 && ch < 127) ? String.fromCharCode(ch) : null;
if (game.iflags?.autodescribe ?? true) {
msg_given = false;
}
// C ref: getpos.c:892 — ESC cancels
if (ch === 0x1b || ch === 'q'.charCodeAt(0)) {
cx = -10;
cy = -10;
msg_given = true;
result = -1;
break;
}
// C ref: getpos.c:910 — pick chars: '.', ',', ';', ':'
if (charStr === '.') { result = 0; break; } // LOOK_TRADITIONAL
if (charStr === ',') { result = 1; break; } // LOOK_QUICK
if (charStr === ';') { result = 2; break; } // LOOK_ONCE
if (charStr === ':') { result = 3; break; } // LOOK_VERBOSE
// C ref: getpos.c:914 — direction keys move cursor
const dir = getpos_direction(charStr || ch);
if (dir) {
const cc = { x: cx, y: cy };
const mul = dir.fast ? 8 : 1;
truncate_to_map(cc, dir.dx * mul, dir.dy * mul);
cx = cc.x;
cy = cc.y;
game.getposx = cx;
game.getposy = cy;
// C ref: curs(WIN_MAP, cx, cy) before flush_screen(0)
if (display) display.setCursor(cx - 1, cy + 1);
await flush_screen(0);
continue;
}
// C ref: getpos.c:945 — '?' shows help, then redraws
if (charStr === '?') {
await getpos_help(force, goal);
// C ref: getpos.c '?' path calls getpos_refresh() after help:
// getpos_help(); getpos_refresh(); curs(WIN_MAP,...)
// where getpos_refresh() performs docrt_flags(docrtRefresh).
await docrt();
await bot();
if (display) display.setCursor(cx - 1, cy + 1);
// C ref: getpos_refresh() → docrt()
// After help dismiss, set show_goal_msg to show "Move cursor..."
show_goal_msg = true;
continue;
}
// C ref: getpos.c:962-970 — NHKF_GETPOS_AUTODESC ('#' by default)
if (charStr === '#') {
game.iflags = game.iflags || {};
const autodesc = (game.iflags.autodescribe !== false);
game.iflags.autodescribe = !autodesc;
await pline(`Automatic description ${game.flags?.verbose ? 'of features under cursor ' : ''}is ${game.iflags.autodescribe ? 'on' : 'off'}.`);
if (!game.iflags.autodescribe) show_goal_msg = true;
msg_given = true;
continue;
}
// C ref: getpos.c:1136 — when not forced, space exits targeting with
// "Done." and returns success code 0.
if (!force && ch === 0x20) {
await pline('Done.');
msg_given = false; // C: suppress clear_nhwindow on exit
cx = -1;
cy = 0;
result = 0;
break;
}
// C ref: getpos.c:989 — NHKF_GETPOS_MENU ('!' by default)
if (charStr === '!') {
game.iflags = game.iflags || {};
game.iflags.getloc_usemenu = !game.iflags.getloc_usemenu;
await pline(`${game.iflags.getloc_usemenu ? 'Using' : 'Not using'} a menu to show possible targets${game.iflags.getloc_usemenu ? " for 'm|M', 'o|O', 'd|D', and 'x|X'" : ''}.`);
msg_given = true;
continue;
}
const cp = mMoOdDxX.indexOf(charStr || '');
if (cp >= 0) {
const gloc = cp >> 1; // 0:mon 1:obj 2:door 3:unexplored
// C ref: getpos.c:1016 — menu mode shows a selection menu
if (game.iflags?.getloc_usemenu) {
const tmpcrd = { x: 0, y: 0 };
if (await getpos_menu(tmpcrd, gloc)) {
cx = tmpcrd.x;
cy = tmpcrd.y;
}
continue;
}
if (!garr[gloc]) {
garr[gloc] = gather_locs(gloc);
gidx[gloc] = 0;
}
const count = garr[gloc]?.length || 0;
if (count > 0) {
if ((cp & 1) === 0) {
gidx[gloc] = (gidx[gloc] + 1) % count;
} else {
gidx[gloc] = (gidx[gloc] - 1 + count) % count;
}
cx = garr[gloc][gidx[gloc]].x;
cy = garr[gloc][gidx[gloc]].y;
}
continue;
}
// C ref: getpos.c:1040-1130 — non-direction key path.
// If key is a recognized feature symbol, search map and report
// not-found when no match exists. Otherwise report unknown direction.
if (charStr && !'\x1b \r\n'.includes(charStr)) {
if (has_matching_feature_symbol(charStr)) {
const found = find_feature_symbol_target(charStr, cx, cy);
if (found) {
cx = found.x;
cy = found.y;
if (msg_given) {
await tty_clear_nhwindow('message');
msg_given = false;
}
continue;
}
await pline(`Can't find dungeon feature '${charStr}'.`);
} else {
const note = !force
? 'aborted'
: "use 'h', 'j', 'k', 'l' or '.'";
await pline(`Unknown direction: '${charStr}' (${note}).`);
}
msg_given = true;
continue;
}
// Unrecognized key — ignore and continue
}
// C ref: getpos.c:1156 — on exit, clear message if msg_given
if (msg_given) {
await tty_clear_nhwindow('message');
}
// C ref: getpos.c:1158-1159 — store result coordinates
if (ccp) {
ccp.x = cx;
ccp.y = cy;
}
game.getposx = 0;
game.getposy = 0;
if (getpos_hilite) await getpos_hilite(false);
getpos_sethilite(null, null);
return result;
}
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