Maze Game HTML5: Reach the Exit with Legal Moves

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<html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>Maze Game HTML5: Reach the Exit with Legal Moves</title><style>*{box-sizing:border-box}body{margin:0;color:var(--ink,#233342);background:var(--bg,#eef2f3);font:17px/1.6 system-ui,sans-serif}main{max-width:980px;margin:auto;padding:clamp(16px,4vw,38px)}h1{font:700 clamp(30px,5vw,49px)/1.12 Georgia,serif;margin:10px 0 20px;max-width:800px}h2{font-size:24px;line-height:1.3;margin:0 0 15px}h3{font-size:19px;margin:12px 0}p{margin:0 0 16px}.eyebrow{font-weight:750;letter-spacing:.08em;text-transform:uppercase;font-size:16px}header{padding:10px 0 25px;border-bottom:3px solid var(--accent,#24586d);margin-bottom:24px}.lede{font-size:20px;max-width:760px}.panel{background:var(--paper,#fff);padding:clamp(18px,3vw,28px);border:1px solid var(--line,#c6d1d8);border-radius:12px;margin:20px 0}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.grid>*{min-width:0}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:16px 0}.stack>*{margin:12px 0}button{font:700 17px/1.4 system-ui,sans-serif;cursor:pointer;color:white;background:var(--accent,#24586d);border:2px solid var(--accent,#24586d);border-radius:7px;padding:11px 17px;max-width:100%;overflow-wrap:anywhere}button.secondary{background:transparent;color:var(--ink,#233342)}button[aria-pressed=true]{box-shadow:inset 0 0 0 3px #fff;outline:2px solid var(--ink,#233342)}button:disabled{opacity:.55;cursor:default}input,textarea,select{font:17px/1.5 system-ui,sans-serif;color:inherit;background:white;border:1px solid #778591;padding:10px 12px;border-radius:6px;max-width:100%;width:100%;min-width:0}input[type=checkbox]{width:22px;height:22px}textarea{min-height:110px;resize:vertical}label{display:block;font-weight:700;margin:12px 0 7px}button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #aa3d70;outline-offset:4px}.result{padding:18px;border-left:5px solid var(--accent,#24586d);background:var(--soft,#e5eff2);white-space:pre-wrap;overflow-wrap:anywhere;margin:20px 0}.result:empty{display:none}.hint{font-size:16px;color:var(--muted,#435968)}table{border-collapse:collapse;width:100%;table-layout:fixed;margin:16px 0}th,td{text-align:left;vertical-align:top;overflow-wrap:anywhere;padding:12px 8px;border-bottom:1px solid var(--line,#c6d1d8)}caption{text-align:left;font-weight:750;margin:8px 0}details{padding:18px;border:1px dashed #7b8b96;margin:20px 0}summary{cursor:pointer;font-weight:750}pre{font:16px/1.6 ui-monospace,monospace;white-space:pre-wrap;overflow-wrap:anywhere;background:#162735;color:#f5f8fa;padding:18px;border-radius:8px}canvas,svg{display:block;max-width:100%;height:auto}footer{margin:28px 0;font-size:16px}.badge{font-weight:750;color:var(--accent,#24586d)}.metric{font:700 38px/1.3 Georgia,serif}.board{display:grid;gap:5px;max-width:440px;margin:20px auto}.board button{padding:7px;min-height:45px}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}@media(max-width:560px){.grid{grid-template-columns:1fr}main{padding:16px}th,td{padding:10px 5px}.row button{flex-grow:1}.metric{font-size:32px}}
:root{--bg:#16292a;--paper:#203b3b;--ink:#f1f6ed;--accent:#356c5e;--soft:#224b44;--muted:#d5e1d5}.maze{grid-template-columns:repeat(7,minmax(0,1fr));max-width:420px}.cell{aspect-ratio:1;display:flex;align-items:center;justify-content:center;background:#e5ead7;color:#172d24;border-radius:4px;font-weight:800;font-size:20px}.cell.wall{background:#3b5651;color:#d5e2dc}.cell.player{background:#efdc8d;color:#282518}.cell.exit{outline:3px solid #a4cd83;outline-offset:-3px}.controls{justify-content:center}</style></head><body><main><header><p class="eyebrow">Route lab · Original 5 × 7 map</p><h1>Maze Game HTML5: Reach the Exit with Legal Moves</h1><p class="lede">Walls reject the action. Only successful steps count.</p><p class="hint">Original local maze. Arrow keys work while the board has focus; direction buttons use the same move rule.</p></header><section class="panel"><h2>Find E from S</h2><p>Focus the board for arrow keys. P = player, E = exit, # = wall.</p><div id="board" class="board maze" tabindex="0" role="group" aria-label="Maze board, use arrow keys"><span id="cell0" class="cell"></span><span id="cell1" class="cell"></span><span id="cell2" class="cell"></span><span id="cell3" class="cell"></span><span id="cell4" class="cell"></span><span id="cell5" class="cell"></span><span id="cell6" class="cell"></span><span id="cell7" class="cell"></span><span id="cell8" class="cell"></span><span id="cell9" class="cell"></span><span id="cell10" class="cell"></span><span id="cell11" class="cell"></span><span id="cell12" class="cell"></span><span id="cell13" class="cell"></span><span id="cell14" class="cell"></span><span id="cell15" class="cell"></span><span id="cell16" class="cell"></span><span id="cell17" class="cell"></span><span id="cell18" class="cell"></span><span id="cell19" class="cell"></span><span id="cell20" class="cell"></span><span id="cell21" class="cell"></span><span id="cell22" class="cell"></span><span id="cell23" class="cell"></span><span id="cell24" class="cell"></span><span id="cell25" class="cell"></span><span id="cell26" class="cell"></span><span id="cell27" class="cell"></span><span id="cell28" class="cell"></span><span id="cell29" class="cell"></span><span id="cell30" class="cell"></span><span id="cell31" class="cell"></span><span id="cell32" class="cell"></span><span id="cell33" class="cell"></span><span id="cell34" class="cell"></span></div><div class="row controls"><button id="up" type="button">Up</button><button id="down" type="button">Down</button><button id="left" type="button">Left</button><button id="right" type="button">Right</button></div><p id="status" class="result" role="status"></p><p id="message" role="status"></p><pre id="history"></pre><div class="row"><button id="invalid" type="button">Inspect isolated exit</button><button id="reset" type="button">Reset original map</button></div></section><footer>Compare the two eight-step routes. A blocked direction does not add a successful move.</footer></main><script>
(()=>{'use strict';const $=id=>document.getElementById(id);
const original=['#######','#S..#E#','#.#.#.#','#.....#','#######'];let map,pos,moves,phase,history;function validate(rows){if(rows.length!==5||rows.some(r=>r.length!==7||/[^#.SE]/.test(r))||rows.join('').split('S').length!==2||rows.join('').split('E').length!==2)return false;const start=rows.join('').indexOf('S'),end=rows.join('').indexOf('E'),queue=[start],seen=new Set(queue);for(let i=0;i<queue.length;i++){const n=queue[i],r=Math.floor(n/7),c=n%7;if(n===end)return true;for(const[dr,dc]of [[-1,0],[1,0],[0,-1],[0,1]]){const rr=r+dr,cc=c+dc,k=rr*7+cc;if(rr>=0&&rr<5&&cc>=0&&cc<7&&rows[rr][cc]!=='#'&&!seen.has(k)){seen.add(k);queue.push(k);}}}return false;}function render(){for(let i=0;i<35;i++){const ch=map[Math.floor(i/7)][i%7],el=$('cell'+i);el.textContent=i===pos?'P':ch==='.'?'·':ch;el.className='cell'+(ch==='#'?' wall':'')+(ch==='E'?' exit':'')+(i===pos?' player':'');}const r=Math.floor(pos/7)+1,c=pos%7+1;$('status').textContent=phase+' · Position ('+r+','+c+') · Successful moves: '+moves+'.';$('history').textContent=history.join('\n');}function reset(invalid=false){map=original.slice();if(invalid)map[2]='#.#.###';pos=8;moves=0;history=[];phase=validate(map)?'Playing':'Invalid map';$('message').textContent=phase==='Invalid map'?'Exit unreachable. Play is disabled.':'Map validated: exit reachable.';render();}function move(dr,dc){if(phase!=='Playing')return;const r=Math.floor(pos/7)+dr,c=pos%7+dc;if(r<0||r>=5||c<0||c>=7||map[r][c]==='#'){$('message').textContent='Blocked target ('+(r+1)+','+(c+1)+'); position and move count unchanged.';return;}pos=r*7+c;moves++;history.push(moves+': ('+(r+1)+','+(c+1)+')');if(map[r][c]==='E')phase='Won';$('message').textContent=phase==='Won'?'Exit reached. Reset for a new round.':'Legal step.';render();}const dirs={up:[-1,0],down:[1,0],left:[0,-1],right:[0,1]};for(const k of Object.keys(dirs))$(k).addEventListener('click',()=>move(...dirs[k]));$('board').addEventListener('keydown',event=>{if(!['ArrowUp','ArrowDown','ArrowLeft','ArrowRight'].includes(event.key))return;event.preventDefault();if(event.repeat)return;const k=event.key.replace('Arrow','').toLowerCase();move(...dirs[k]);});$('invalid').addEventListener('click',()=>reset(true));$('reset').addEventListener('click',()=>reset());reset();
})();
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