scgames/website/mazegame.html at main · usrx215/scgames · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>Maze Game v2</title>
  <link rel="icon" type="image/x-icon" href="https://usrx215.github.io/scgames/mazegame.png">
  <style>
    :root { --bg:#0b0e14; --panel:#11151f; --ink:#e6e6e6; --muted:#9aa4b2; --accent:#6ee7ff; --accent2:#a7f3d0; }
    * { box-sizing: border-box; }
    body { margin:0; font-family: system-ui, -apple-system, Segoe UI, Ubuntu, Cantarell, Roboto, "Noto Sans", Arial, sans-serif; background:var(--bg); color:var(--ink); display:grid; min-height:100svh; grid-template-rows:auto 1fr; }
    header { padding:12px 16px; background:linear-gradient(180deg, #0f1422, #0b0e14); border-bottom:1px solid #1d2433; display:flex; gap:12px; align-items:center; flex-wrap:wrap; }
    header h1 { font-size:16px; margin:0; letter-spacing:0.3px; font-weight:700; }
    .controls { display:flex; gap:10px; align-items:center; flex-wrap:wrap; }
    .controls label { font-size:12px; color:var(--muted); }
    .controls input[type="number"]{ width:72px; }
    .controls input, .controls button { background:#0f1422; color:var(--ink); border:1px solid #263046; border-radius:10px; padding:6px 10px; font-size:12px; }
    .controls button { cursor:pointer; transition: transform .05s ease; }
    .controls button:active { transform: translateY(1px); }
    .controls .hint { color:var(--muted); font-size:12px; margin-left:6px; }
    main { display:grid; place-items:center; padding:12px; position:relative; }
    canvas { background:#05070c; border-radius:12px; box-shadow: 0 10px 40px #00000066, inset 0 0 0 1px #1d2433; image-rendering: pixelated; }
    #minimap { position:absolute; top:20px; right:20px; background:#000; border:1px solid #444; border-radius:8px; image-rendering: pixelated; }
    footer { text-align:center; color:var(--muted); font-size:12px; padding:8px 0 12px; }
    .kbd { padding:1px 6px; border:1px solid #32415f; border-bottom-width:2px; border-radius:6px; background:#0f1422; color:#c9d2e1; font-family:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace; font-size:12px; }
  </style>
</head>
<body>
  <header>
    <h1>Maze Game v2</h1>
    <div class="controls">
      <label>Width (cells)
        <input id="w" type="number" min="5" step="2" value="41" />
      </label>
      <label>Height (cells)
        <input id="h" type="number" min="5" step="2" value="41" />
      </label>
      <label>Cell px
        <input id="cell" type="number" min="4" max="64" value="16" />
      </label>
      <label>Seed
        <input id="seed" type="text" placeholder="random" />
      </label>
      <label><input id="showPath" type="checkbox" /> Show solution</label>
      <button id="regen">Regenerate</button>
      <button id="reset">Reset Player</button>
      <button id="showSeed">Show Seed</button>
      <span class="hint">Controls: <span class="kbd">WASD</span>/<span class="kbd">↑←↓→</span>, <span class="kbd">R</span> regen</span>
    </div>
  </header>
  <main>
    <canvas id="maze"></canvas>
    <canvas id="minimap" width="160" height="160"></canvas>
  </main>
  <footer>
    Perfect maze — camera locked to player, minimap reveals visited tiles.
  </footer>

  <script>
    // PRNG (seedable)
    function xmur3(str){ let h=1779033703^str.length; for(let i=0;i<str.length;i++){h=Math.imul(h^str.charCodeAt(i),3432918353); h=h<<13|h>>>19;} return ()=>{h=Math.imul(h^h>>>16,2246822507); h=Math.imul(h^h>>>13,3266489909); return (h^h>>>16)>>>0;}; }
    function mulberry32(a){ return function(){ let t=a+=0x6D2B79F5; t=Math.imul(t^t>>>15,t|1); t^=t+Math.imul(t^t>>>7,t|61); return ((t^t>>>14)>>>0)/4294967296; } }
    function makeRng(seedStr){ if(!seedStr) return Math.random; const seedFn=xmur3(seedStr); return mulberry32(seedFn()); }

    const canvas = document.getElementById('maze');
    const ctx = canvas.getContext('2d');
    const minimap = document.getElementById('minimap');
    const mctx = minimap.getContext('2d');

    let grid, W, H, CELL, rng, player, goal, visited;
    const VIEW = 21; // visible tile window (odd preferred)
    let currentSeed = null;

    function initGrid(widthCells, heightCells){
      W = widthCells|0; H = heightCells|0; if(W%2===0) W++; if(H%2===0) H++;
      grid = Array.from({length:H}, ()=>Array(W).fill(1));
      visited = Array.from({length:H}, ()=>Array(W).fill(false));
    }

    function shuffle(arr){ for(let i=arr.length-1;i>0;i--){const j=(rng()*(i+1))|0; [arr[i],arr[j]]=[arr[j],arr[i]];} return arr; }

    function carveMaze(){
      const stack = [[1,1]]; grid[1][1] = 0;
      while(stack.length){
        const [cx,cy] = stack[stack.length-1];
        const dirs = shuffle([[0,-2],[0,2],[2,0],[-2,0]]);
        let carved = false;
        for(const [dx,dy] of dirs){
          const nx = cx+dx, ny = cy+dy;
          if(ny>0 && ny<H-1 && nx>0 && nx<W-1 && grid[ny][nx]===1){
            grid[cy+dy/2][cx+dx/2] = 0; grid[ny][nx] = 0;
            stack.push([nx,ny]); carved = true; break;
          }
        }
        if(!carved) stack.pop();
      }
      player = {x:1,y:1};
      goal = farthestFrom(player);
      player = farthestFrom(goal);
    }

    function bfsDistances(sx,sy){
      const dist = Array.from({length:H}, ()=>Array(W).fill(Infinity));
      const q = [[sx,sy]]; dist[sy][sx]=0;
      const moves = [[1,0],[-1,0],[0,1],[0,-1]];
      while(q.length){
        const [x,y] = q.shift();
        for(const [dx,dy] of moves){
          const nx = x+dx, ny = y+dy;
          if(nx>=0 && ny>=0 && nx<W && ny<H && grid[ny][nx]===0 && dist[ny][nx]===Infinity){
            dist[ny][nx] = dist[y][x] + 1; q.push([nx,ny]);
          }
        }
      }
      return dist;
    }

    function farthestFrom(start){
      const dist = bfsDistances(start.x, start.y);
      let max = -1, pos = {x:start.x,y:start.y};
      for(let y=1;y<H;y+=2){ for(let x=1;x<W;x+=2){ if(dist[y][x]!==Infinity && dist[y][x] > max){ max = dist[y][x]; pos = {x,y}; } } }
      return pos;
    }

    function shortestPath(from, to){
      const dist = bfsDistances(from.x, from.y);
      if(dist[to.y][to.x]===Infinity) return [];
      const path = [[to.x,to.y]];
      const moves = [[1,0],[-1,0],[0,1],[0,-1]];
      let [x,y] = [to.x,to.y];
      while(x!==from.x || y!==from.y){
        let best = null, bestd = Infinity;
        for(const [dx,dy] of moves){
          const nx = x+dx, ny = y+dy;
          if(nx>=0 && ny>=0 && nx<W && ny<H && dist[ny][nx] < bestd){ bestd = dist[ny][nx]; best = [nx,ny]; }
        }
        if(!best) break;
        [x,y] = best; path.push([x,y]);
      }
      return path.reverse();
    }

    function draw(){
      canvas.width = VIEW * CELL;
      canvas.height = VIEW * CELL;
      ctx.fillStyle = '#03060b'; ctx.fillRect(0,0,canvas.width,canvas.height);
      const half = VIEW >> 1;
      for(let dy=-half; dy<=half; dy++){
        for(let dx=-half; dx<=half; dx++){
          const worldX = player.x + dx;
          const worldY = player.y + dy;
          const sx = (dx + half) * CELL;
          const sy = (dy + half) * CELL;
          if(worldX >= 0 && worldY >= 0 && worldX < W && worldY < H){
            if(grid[worldY][worldX] === 1){ ctx.fillStyle = '#101826'; ctx.fillRect(sx, sy, CELL, CELL); ctx.fillStyle='rgba(255,255,255,0.04)'; ctx.fillRect(sx, sy, CELL, Math.max(1, CELL*0.12)); }
            else { ctx.fillStyle = '#0c1220'; ctx.fillRect(sx, sy, CELL, CELL); }
          } else { ctx.fillStyle = '#0b0f16'; ctx.fillRect(sx, sy, CELL, CELL); }
        }
      }
      if(document.getElementById('showPath').checked){
        const path = shortestPath(player, goal);
        ctx.globalAlpha = 0.95;
        for(const [px,py] of path){
          const dx = px - player.x; const dy = py - player.y;
          if(Math.abs(dx) <= half && Math.abs(dy) <= half){
            const sx = (dx + half) * CELL + CELL*0.25;
            const sy = (dy + half) * CELL + CELL*0.25;
            ctx.fillStyle = '#6ee7ff'; ctx.fillRect(sx, sy, CELL*0.5, CELL*0.5);
          }
        }
        ctx.globalAlpha = 1;
      }
      const gdx = goal.x - player.x, gdy = goal.y - player.y;
      if(Math.abs(gdx) <= half && Math.abs(gdy) <= half){
        const gsx = (gdx + half) * CELL + CELL*0.15;
        const gsy = (gdy + half) * CELL + CELL*0.15;
        ctx.fillStyle = '#a7f3d0'; ctx.fillRect(gsx, gsy, CELL*0.7, CELL*0.7);
      }
      const center = half * CELL;
      ctx.fillStyle = '#e5e7eb'; ctx.fillRect(center + CELL*0.2, center + CELL*0.2, CELL*0.6, CELL*0.6);
      visited[player.y][player.x] = true;
      drawMinimap();
    }

    function drawMinimap(){
      const mw = minimap.width, mh = minimap.height;
      const scaleX = mw / W, scaleY = mh / H;
      mctx.fillStyle = '#000'; mctx.fillRect(0,0,mw,mh);
      for(let y=0;y<H;y++){
        for(let x=0;x<W;x++){
          if(!visited[y][x]) continue;
          mctx.fillStyle = grid[y][x]===0 ? '#0c1220' : '#101826';
          mctx.fillRect(x*scaleX, y*scaleY, scaleX, scaleY);
        }
      }
      mctx.fillStyle = '#e5e7eb'; mctx.fillRect(player.x*scaleX, player.y*scaleY, scaleX, scaleY);
      mctx.fillStyle = '#a7f3d0'; mctx.fillRect(goal.x*scaleX, goal.y*scaleY, scaleX, scaleY);
    }

    function regenerate(){
      const w = Math.max(5, parseInt(document.getElementById('w').value,10) || 31);
      const h = Math.max(5, parseInt(document.getElementById('h').value,10) || 31);
      CELL = Math.max(4, Math.min(64, parseInt(document.getElementById('cell').value,10) || 16));
      const seedStr = document.getElementById('seed').value.trim();
      currentSeed = seedStr || (Math.random() + '').slice(2);
      rng = makeRng(seedStr || currentSeed);

      initGrid(w,h);
      carveMaze();

      visited = Array.from({length:H}, ()=>Array(W).fill(false));
      visited[player.y][player.x] = true;

      canvas.width = VIEW * CELL; canvas.height = VIEW * CELL;

      draw();
    }

    function tryMove(dx,dy){
      const nx = player.x + dx, ny = player.y + dy;
      if(nx<0||ny<0||nx>=W||ny>=H) return;
      if(grid[ny][nx]===0){ player.x = nx; player.y = ny; draw(); checkWin(); }
    }

    function checkWin(){ if(player.x===goal.x && player.y===goal.y) flashWin(); }

    function flashWin(){
      let t=0;
      function step(){
        draw();
        const half = VIEW>>1;
        const cx = half*CELL + CELL*0.5, cy = cx;
        ctx.save();
        ctx.globalAlpha = Math.max(0,1.2 - t);
        ctx.strokeStyle = '#6ee7ff';
        ctx.lineWidth = 3;
        ctx.beginPath();
        ctx.arc(cx, cy, CELL*1.2*t, 0, Math.PI*2);
        ctx.stroke();
        ctx.restore();
        t+=0.06;
        if(t<1.2) requestAnimationFrame(step);
        else {
          document.getElementById('seed').value = '';
          currentSeed = (Math.random() + '').slice(2);
          rng = makeRng(currentSeed);
          regenerate();
        }
      }
      step();
    }

    // movement
    window.addEventListener('keydown', (e)=>{
      const k = e.key.toLowerCase();
      if(k==='arrowup' || k==='w') tryMove(0,-1);
      else if(k==='arrowdown' || k==='s') tryMove(0,1);
      else if(k==='arrowleft' || k==='a') tryMove(-1,0);
      else if(k==='arrowright' || k==='d') tryMove(1,0);
      else if(k==='r') regenerate();
    });

    document.getElementById('regen').addEventListener('click', regenerate);
    document.getElementById('reset').addEventListener('click', ()=>{ player = {x:1,y:1}; visited = Array.from({length:H}, ()=>Array(W).fill(false)); visited[player.y][player.x]=true; draw();});
    document.getElementById('showPath').addEventListener('change', draw);
    document.getElementById('showSeed').addEventListener('click', () => {
      document.getElementById('seed').value = currentSeed;
    });

    (function start(){
      document.getElementById('w').value = 41;
      document.getElementById('h').value = 41;
      document.getElementById('cell').value = 16;
      currentSeed = (Math.random() + '').slice(2);
      rng = makeRng(currentSeed);
      initGrid(41,41);
      carveMaze();
      CELL = parseInt(document.getElementById('cell').value,10) || 16;
      canvas.width = VIEW * CELL; canvas.height = VIEW * CELL;
      visited[player.y][player.x] = true;
      draw();
    })();
  </script>
</body>
</html>