From 310355104a1cdbd3e82eebc5cbb7c42819991929 Mon Sep 17 00:00:00 2001
From: Andre Padez <andre.padez@gmail.com>
Date: Sun, 19 Oct 2025 02:30:50 +0100
Subject: [PATCH] useHeroRender

---
 src/useGame.ts                       |  8 +--
 src/useHero/index.ts                 |  1 +
 src/useHero/useHeroRender.ts         | 74 ++++++++++++++++++++++++++++
 src/useKeyBindings/useKeyBindings.ts |  4 +-
 4 files changed, 82 insertions(+), 5 deletions(-)
 create mode 100644 src/useHero/index.ts
 create mode 100644 src/useHero/useHeroRender.ts

diff --git a/src/useGame.ts b/src/useGame.ts
index 3d590a3..0a9f3d8 100644
--- a/src/useGame.ts
+++ b/src/useGame.ts
@@ -1,18 +1,20 @@
 import type { GameManager, GameOptions } from './types';
 import { useBoard } from './useBoard';
 import { useCursor } from './useCursor';
+import { useHeroRender } from './useHero';
 import { useKeyBindings } from './useKeyBindings';
 import { useGameStatus } from './useGameStatus';
 
 export function useGame(options: GameOptions, platformHook?: unknown): GameManager {
   const { cols, rows } = options;
-  const boardManager = useBoard(cols, rows);
-  const { containerRef, renderBoard } = boardManager;
-  const cursor = useCursor(boardManager);
+  const board = useBoard(cols, rows);
+  const { containerRef, renderBoard } = board;
+  const cursor = useCursor(board);
   const gameStatusManager = useGameStatus();
 
   const { gameStatus, startGame, togglePause, quitGame } = gameStatusManager;
 
+  useHeroRender({ gameStatus, board, cursor });
   const keyManager = useKeyBindings({ cursor, gameStatus });
 
   const gameManager = {
diff --git a/src/useHero/index.ts b/src/useHero/index.ts
new file mode 100644
index 0000000..19743ad
--- /dev/null
+++ b/src/useHero/index.ts
@@ -0,0 +1 @@
+export * from './useHeroRender';
diff --git a/src/useHero/useHeroRender.ts b/src/useHero/useHeroRender.ts
new file mode 100644
index 0000000..75a26c3
--- /dev/null
+++ b/src/useHero/useHeroRender.ts
@@ -0,0 +1,74 @@
+import { useEffect } from "react";
+import type { BoardManager, Cursor, GameStatus } from "../types";
+
+type UseHeroRenderParams = {
+  gameStatus: GameStatus;
+  board: BoardManager;
+  cursor: Cursor;
+  relative?: boolean;
+};
+
+export function useHeroRender(params: UseHeroRenderParams) {
+  const { gameStatus, board, cursor, relative = true } = params;
+  const { containerRef } = board;
+  const playerPos = cursor.position();
+
+  const applyRelativeNumbers = (mazeDiv: HTMLElement, R: number, C: number) => {
+    const rows = Number(mazeDiv.dataset.rows || 0);
+    const cols = Number(mazeDiv.dataset.cols || 0);
+
+    const rowNums = mazeDiv.querySelectorAll<HTMLElement>(".number.row[data-r]");
+    rowNums.forEach((el) => {
+      const r = Number(el.getAttribute("data-r"));
+      if (r <= 0 || r >= rows) {
+        el.textContent = "";
+        el.classList.remove("is-active");
+        return;
+      }
+      el.textContent = r === R ? String(r) : String(Math.abs(r - R));
+      el.classList.toggle("is-active", r === R);
+    });
+
+    const colNums = mazeDiv.querySelectorAll<HTMLElement>(".number.col[data-c]");
+    colNums.forEach((el) => {
+      const c = Number(el.getAttribute("data-c"));
+      if (c <= 0 || c >= cols) {
+        el.textContent = "";
+        el.classList.remove("is-active");
+        return;
+      }
+      el.textContent = c === C ? String(c) : String(Math.abs(c - C));
+      el.classList.toggle("is-active", c === C);
+    });
+
+    mazeDiv.classList.add("is-relative");
+  };
+
+  useEffect(() => {
+    console.log('gameStatus', gameStatus);
+    const container = containerRef.current;
+    if (!['started', 'has-key'].includes(gameStatus)) return;
+    if (!container) return;
+
+    const mazeDiv = container.querySelector("#maze") as HTMLElement | null;
+    if (!mazeDiv) return;
+
+    mazeDiv.querySelectorAll(".hero").forEach((el) => el.classList.remove("hero"));
+
+    const selector = `.maze-row > div[data-r="${playerPos.row}"][data-c="${playerPos.col}"]`;
+    const cell = mazeDiv.querySelector(selector) as HTMLElement | null;
+    if (cell) cell.classList.add("hero");
+
+    if (relative) {
+      mazeDiv.dataset.rows = String(mazeDiv.querySelectorAll(".maze-row").length);
+      mazeDiv.dataset.cols = String(
+        mazeDiv
+          .querySelector(".maze-row > div[data-r][data-c]")
+          ?.parentElement?.querySelectorAll(':scope > div[data-r][data-c]').length || 0
+      );
+      applyRelativeNumbers(mazeDiv, playerPos.row, playerPos.col);
+    }
+  }, [gameStatus, playerPos, containerRef, relative]);
+}
+
+export type UseHeroRenderType = ReturnType<typeof useHeroRender>;
diff --git a/src/useKeyBindings/useKeyBindings.ts b/src/useKeyBindings/useKeyBindings.ts
index 7389330..6b106e3 100644
--- a/src/useKeyBindings/useKeyBindings.ts
+++ b/src/useKeyBindings/useKeyBindings.ts
@@ -56,7 +56,7 @@ export const useKeyBindings = ({ cursor, gameStatus }: UseKeyBindingsParams) =>
         return;
       }
 
-      const isDigit = ev.key >= "0" && e.key <= "9";
+      const isDigit = ev.key >= "0" && ev.key <= "9";
       if (isDigit) {
         if (ev.key === "0" && cursor.getCount() === "") return;
         recordKey(ev.key);
@@ -71,7 +71,7 @@ export const useKeyBindings = ({ cursor, gameStatus }: UseKeyBindingsParams) =>
       }
 
       if (ev.key === "^" || ev.key === "$") {
-        recordKey(e.key);
+        recordKey(ev.key);
         cursor.resetCount();
         if (ev.key === "^") {
           cursor.moveToStart();