Aqui está o jogo completo em um único arquivo HTML:

<!DOCTYPE html>
<html lang="pt-br">
<head><script>/* TechDescomplicado: ponte de controles */(function(){var T={' ':1,ArrowUp:1,ArrowDown:1,ArrowLeft:1,ArrowRight:1};addEventListener('keydown',function(e){if(T[e.key])e.preventDefault()},true);addEventListener('message',function(m){var d=m.data;if(!d||d.td!=='tecla')return;var e=new KeyboardEvent(d.tipo==='up'?'keyup':'keydown',{key:d.key,code:d.code,bubbles:true,cancelable:true});try{Object.defineProperty(e,'keyCode',{get:function(){return d.kc}});Object.defineProperty(e,'which',{get:function(){return d.kc}})}catch(x){}(document.activeElement||document.body||document.documentElement).dispatchEvent(e)})})();</script>
<meta charset="utf-8">
<meta name="viewport" content="width=device=device-width,initial-scale=1"><title>CORREDOR 3D</title>
<style>
*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%;width:100%;overflow:hidden;background:#030407}
body{display:flex;align-items:center;justify-content:center}
canvas{display:block;image-rendering:pixelated;image-rendering:crisp-edges;background:#000}
</style>
</head>
<body>
<canvas id="tela" width="960" height="720"></canvas>
<script>
"use strict";
(function(){
/* ==========================================================================
   CORREDOR 3D - raycasting em canvas 2D, tudo desenhado por codigo
   ========================================================================== */
var TELA = document.getElementById('tela');
var CONTEXTO = TELA.getContext('2d');

/* ---------- constantes da tela ---------- */
var W_TELA = 960, H_TELA = 720;
var W_VISAO = 960, H_VISAO = 600;
var W_BUF = 480, H_BUF = 300;              /* resolucao interna (metade) */
var MEIO_X = W_BUF / 2, MEIO_Y = H_BUF / 2;
var PLANO = W_BUF / H_BUF;                 /* 0,8 -> sem olho de peixe e sem alongamento */
var PAINEL_Y = H_VISAO;                    /* painel inferior de 120 px */
var MAX_VISAO = 19;

/* ---------- mapa: cada caractere e uma casa. Primeira linha = norte ---------- */
var MAPA_TEXTO = [
"########################",
"#P...#.....E....#......#",
"#....#..........D..V...#",
"#....D....A.....#......#",
"#....#..........####D###",
"######TTTTDTTTT##......#",
"#..........#.....#..E..#",
"#..E.......#.....#.....#",
"#..........D.....D.....#",
"#....V.....#.....#..A..#",
"#TTTTDTTTTT#MMMMM###D###",
"#.......#..........#...#",
"#...A...#....E.....#.C.#",
"#.......D..........D...#",
"#.......#....#.....#...#",
"####D####....#.....#####",
"#......#.....#..E..#...#",
"#..E...#.....#.....K...#",
"#......D.....#.....#.S.#",
"#......#MMMMM#MMMMM#####",
"#..V...#.............E.#",
"#......D.....A.........#",
"#......#...............#",
"########################"
];
var COLS = MAPA_TEXTO[0].length;
var LINS = MAPA_TEXTO.length;

function eNumeroCaractere(c){
  var s = c + "";
  if (s.length !== 1) return false;
  var f = Math.floor(s.charCodeAt(0));
  return (f >= 48 && f <= 57) || (f >= 65 && f <= 90);
}
function ehParedeFixa(c){
  var f = c.charCodeAt(0);
  if (f === 35 || f === 84 || f === 77 || f === 83) return true;   /* # T M S */
  if (!eNumeroCaractere(c)) return true;
  return false;
}
function ehPorta(c){ return c === 'D' || c === 'K'; }
function tileDe(col, lin){
  if (col < 0 || col >= COLS || lin < 0 || lin >= LINS) return '#';
  return MAPA_TEXTO[lin].charAt(col);
}

/* ---------- utilidades ---------- */
function criaCanvas(w,h){ var c = document.createElement('canvas'); c.width = w; c.height = h; return c; }
function aleatorio(semente){
  var s = semente % 2147483647;
  if (s <= 0) s += 2147483647;
  return function(){ s = (s * 16807) % 2147483647; return (s - 1) / 2147483646; };
}
function limita(v,a,b){ return v < a ? a : (v > b ? b : v); }
function mistura(a,b,t){ return a + (b - a) * t; }
function arredondaCor(n){ return Math.max(0, Math.min(255, Math.round(n))); }
function corEscrita(c, f){ return c + "(" + f + ")"; }
function sombraEscrita(c, x, y, f, desvio){
  c.fillStyle = "#000"; c.fillText(x, y + desvio, f + desvio);
}

/* ==========================================================================
   TEXTURAS (criadas antes de qualquer desenho do labirinto)
   ========================================================================== */
var TAM_TEX = 64;

function texPedra(g){
  var r = aleatorio(9021);
  g.fillStyle = "#1d2327"; g.fillRect(0,0,64,64);
  for (var iy = 0; iy < 4; iy++){
    var y0 = iy * 16, x = 0;
    while (x < 64){
      var w = 12 + Math.floor(r()*20);
      var base = 96 + Math.floor(r()*58);
      g.save();
      g.beginPath();
      g.moveTo(x + r()*3, y0 + r()*3);
      g.lineTo(x + w - r()*3, y0 + r()*3);
      g.lineTo(x + w - r()*3, y0 + 16 - r()*3);
      g.lineTo(x + r()*3, y0 + 16 - r()*3);
      g.closePath();
      g.fillStyle = "rgb(" + base + "," + base + "," + (base+8) + ")";
      g.fill();
      g.strokeStyle = "rgba(255,255,255,.14)"; g.lineWidth = 1; g.stroke();
      g.clip();
      for (var m = 0; m < 44; m++){
        var mx = x + r()*w, my = y0 + r()*16;
        g.fillStyle = r() > .5 ? "rgba(0,0,0,.14)" : "rgba(255,255,255,.08)";
        g.fillRect(mx, my, 1 + (r()<.25?1:0), 1);
      }
      g.fillStyle = "rgba(0,0,0,.22)";
      g.fillRect(x, y0+13, w, 3);
      g.restore();
      x += w + 2;
    }
  }
  for (var q = 0; q < 60; q++){
    g.fillStyle = "rgba(0,0,0,.3)";
    g.fillRect(Math.floor(r()*64), Math.floor(r()*64), 1, 1);
  }
}

function texTijolo(g){
  var r = aleatorio(4477);
  g.fillStyle = "#4a3c38"; g.fillRect(0,0,64,64);
  for (var linha = 0; linha < 8; linha++){
    var y = linha * 8;
    var off = (linha % 2) ? 8 : 0;
    for (var bx = -16; bx < 64; bx += 16){
      var px = bx + off;
      var t = r();
      var rr = 106 + Math.floor(t*40), rg = 34 + Math.floor(t*20), rb = 24 + Math.floor(t*14);
      g.fillStyle = "rgb(" + rr + "," + rg + "," + rb + ")";
      g.fillRect(px, y + 1, 15, 6);
      g.fillStyle = "rgba(255,255,255,.10)"; g.fillRect(px, y + 1, 15, 1);
      g.fillStyle = "rgba(0,0,0,.25)"; g.fillRect(px, y + 6, 15, 1);
      for (var n = 0; n < 6; n++){
        g.fillStyle = "rgba(0,0,0,.18)";
        g.fillRect(px + Math.floor(r()*15), y + 1 + Math.floor(r()*6), 1, 1);
      }
    }
  }
}

function texMetal(g){
  var r = aleatorio(1221);
  var grad = g.createLinearGradient(0,0,0,64);
  grad.addColorStop(0, "#2c4257");
  grad.addColorStop(.45, "#1d2c3b");
  grad.addColorStop(1, "#131d27");
  g.fillStyle = grad; g.fillRect(0,0,64,64);
  g.fillStyle = "rgba(255,255,255,.06)";
  for (var i = 0; i < 6; i++) g.fillRect(0, i*10 + 2, 64, 2);
  g.fillStyle = "rgba(0,0,0,.5)";
  g.fillRect(0, 20, 64, 2); g.fillRect(0, 44, 64, 2);
  g.fillStyle = "rgba(255,255,255,.12)";
  g.fillRect(0, 22, 64, 1); g.fillRect(0, 46, 64, 1);
  for (var e = 0; e < 8; e++){
    var cx = 4 + e*8, cy = 4;
    g.fillStyle = "#93a7b8"; g.beginPath(); g.arc(cx, cy, 2, 0, 6.3); g.fill();
    g.fillStyle = "#0d161d"; g.beginPath(); g.arc(cx, cy + 1, 1.4, 0, 6.3); g.fill();
    g.fillStyle = "#93a7b8"; g.beginPath(); g.arc(cx, cy + 60, 2, 0, 6.3); g.fill();
  }
  for (var s = 0; s < 26; s++){
    g.strokeStyle = "rgba(255,255,255,.10)"; g.lineWidth = 1;
    var yy = Math.floor(r()*64);
    g.beginPath(); g.moveTo(r()*64, yy); g.lineTo(r()*64, yy + (r()*4-2)); g.stroke();
  }
}

function texPortaMadeira(g){
  var r = aleatorio(7788);
  g.fillStyle = "#2a1a0e"; g.fillRect(0,0,64,64);
  for (var p = 0; p < 4; p++){
    var px = p*16;
    var base = 96 + Math.floor(r()*26);
    var grad = g.createLinearGradient(px, 0, px+16, 0);
    grad.addColorStop(0, "rgb(" + (base*0.6) + "," + (base*0.42) + ",20)");
    grad.addColorStop(.5, "rgb(" + base + "," + (base*0.62) + ",34)");
    grad.addColorStop(1, "rgb(" + (base*0.55) + "," + (base*0.36) + ",18)");
    g.fillStyle = grad; g.fillRect(px + 1, 1, 14, 62);
    g.fillStyle = "rgba(0,0,0,.35)";
    for (var k = 0; k < 5; k++) g.fillRect(px + 2, Math.floor(r()*60), 12, 1);
  }
  g.fillStyle = "#42474c";
  g.fillRect(0, 8, 64, 7); g.fillRect(0, 49, 64, 7);
  g.fillStyle = "rgba(255,255,255,.18)"; g.fillRect(0, 8, 64, 1); g.fillRect(0, 49, 64, 1);
  g.fillStyle = "#0b0e11";
  for (var b = 0; b < 8; b++){ g.beginPath(); g.arc(4 + b*8, 11.5, 1.6, 0, 6.3); g.fill(); g.beginPath(); g.arc(4 + b*8, 52.5, 1.6, 0, 6.3); g.fill(); }
  g.fillStyle = "#120b05"; g.fillRect(0,0,64,2); g.fillRect(0,62,64,2);
  g.fillStyle = "#120b05"; g.fillRect(0,0,2,64); g.fillRect(62,0,2,64);
}

function texPortaVermelha(g){
  var r = aleatorio(1717);
  g.fillStyle = "#1b0d0d"; g.fillRect(0,0,64,64);
  var grad = g.createLinearGradient(0,0,0,64);
  grad.addColorStop(0, "#a2231d"); grad.addColorStop(.5, "#7d1512"); grad.addColorStop(1, "#530c0a");
  g.fillStyle = grad; g.fillRect(3,3,58,58);
  g.strokeStyle = "#ffd24a"; g.lineWidth = 2; g.strokeRect(3,3,58,58);
  g.fillStyle = "rgba(0,0,0,.35)";
  g.fillRect(8,10,20,18); g.fillRect(36,10,20,18); g.fillRect(8,36,20,12); g.fillRect(36,36,20,12);
  g.fillStyle = "#ffd24a"; g.fillRect(40,26,14,16);
  g.fillStyle = "#5a3c06";
  g.beginPath(); g.arc(47,31,2.6,0,6.3); g.fill();
  g.fillRect(45.6,31,2.8,8);
  g.fillStyle = "#22262a";
  for (var b = 0; b < 7; b++){ g.beginPath(); g.arc(6 + b*9, 6, 1.6, 0, 6.3); g.fill(); g.beginPath(); g.arc(6 + b*9, 58, 1.6, 0, 6.3); g.fill(); }
  for (var n = 0; n < 40; n++){ g.fillStyle = "rgba(0,0,0,.2)"; g.fillRect(Math.floor(r()*64), Math.floor(r()*64), 1, 1); }
}

function texSaida(g){
  var r = aleatorio(555);
  var grad = g.createLinearGradient(0,0,0,64);
  grad.addColorStop(0, "#1e7b31"); grad.addColorStop(1, "#0c3f1a");
  g.fillStyle = "#07240f"; g.fillRect(0,0,64,64);
  g.fillStyle = grad; g.fillRect(3,3,58,58);
  g.strokeStyle = "#8effa4"; g.lineWidth = 2; g.strokeRect(3,3,58,58);
  g.fillStyle = "#8effa4";
  g.beginPath();
  g.moveTo(28,6); g.lineTo(36,6); g.lineTo(36,26); g.lineTo(46,26);
  g.lineTo(32,44); g.lineTo(18,26); g.lineTo(28,26); g.closePath(); g.fill();
  for (var b = 0; b < 8; b++){
    g.fillStyle = "#053c14";
    g.fillRect(0, 50 + b*2, 64, 1);
  }
  g.fillStyle = "rgba(255,255,255,.10)";
  for (var n = 0; n < 50; n++){ g.fillRect(Math.floor(r()*64), Math.floor(r()*64), 1, 1); }
}

function texFundoCoracoes(g){
  var r = aleatorio(313);
  g.fillStyle = "#6a4030"; g.fillRect(0,0,64,64);
  for (var i = 0; i < 90; i++){
    g.fillStyle = "rgba(0,0,0,.25)";
    g.fillRect(Math.floor(r()*64), Math.floor(r()*64), 1, Math.floor(1 + r()*2));
  }
  g.fillStyle = "rgba(255,255,255,.06)";
  for (var n = 0; n < 40; n++) g.fillRect(Math.floor(r()*64), Math.floor(r()*64), 1, 1);
}

var TEXTURAS = {};
function criaTexturas(){
  var nomes = [
    ["pedra", texPedra], ["tijolo", texTijolo], ["metal", texMetal],
    ["madeira", texPortaMadeira], ["vermelha", texPortaVermelha], ["saida", texSaida]
  ];
  for (var i = 0; i < nomes.length; i++){
    var c = criaCanvas(TAM_TEX, TAM_TEX);
    nomes[i][1](c.getContext('2d'));
    TEXTURAS[nomes[i][0]] = c;
  }
  var fundo = criaCanvas(32, 32); texFundoCoracoes(fundo.getContext('2d'));
  TEXTURAS['fundo'] = fundo;
  TEXTURAS['chao'] = criaCanvas(32, 32);
  var gc = TEXTURAS['chao'].getContext('2d');
  var r = aleatorio(99);
  gc.fillStyle = "#3a251a"; gc.fillRect(0,0,32,32);
  for (var k = 0; k < 130; k++){
    gc.fillStyle = r() > .5 ? "rgba(0,0,0,.3)" : "rgba(255,255,255,.07)";
    gc.fillRect(Math.floor(r()*32), Math.floor(r()*32), Math.floor(1 + r()*2), 1);
  }
  /* versao escurecida do fundo, para o painel do menu */
  var escuro = criaCanvas(64,64); var g = escuro.getContext('2d');
  texFundoCoracoes(g);
  g.fillStyle = "rgba(0,0,0,.5)"; g.fillRect(0,0,64,64);
  TEXTURAS['fundoEscuro'] = escuro;
}
function nomeTextura(t){
  if (t === '#') return 'pedra';
  if (t === 'T') return 'tijolo';
  if (t === 'M') return 'metal';
  if (t === 'S') return 'saida';
  if (t === 'K') return 'vermelha';
  return 'madeira';
}

/* ==========================================================================
   SPRITES DESENHADOS POR CODIGO (grade de "pixels" logicos)
   ========================================================================== */
var ESP Soldado = { escala:2, largura:20, altura:32, hUnidades:0.88 };
var ESP_Caido = { escala:2, largura:30, altura:15, hUnidades:0.30 };
var ESP_Kit = { escala:2, largura:16, altura:16, hUnidades:0.34 };
var ESP_Municao = { escala:2, largura:16, altura:11, hUnidades:0.30 };
var ESP_Chave = { escala:2, largura:16, altura:16, hUnidades:0.32 };

function desenhaGrade(def, linhas, mapaCores){
  var c = criaCanvas(def.largura * def.escala, def.altura * def.escala);
  var g = c.getContext('2d');
  var s = def.escala;
  for (var y = 0; y < def.altura; y++){
    var linha = linhas[y];
    if (!linha) linha = "";
    for (var x = 0; x < def.largura; x++){
      var ch = x < linha.length ? linha.charAt(x) : ".";
      if (ch === '.') continue;
      var cor = mapaCores[ch];
      if (!cor) continue;
      g.fillStyle = cor;
      g.fillRect(x*s, y*s, s, s);
    }
  }
  return c;
}

var CORES_SOL = {
  A:'#2b2a16', B:'#57693a', b:'#465528', C:'#6d804a', S:'#c99c72', s:'#a87c55',
  E:'#ffffff', P:'#111316', D:'#141414', F:'#aeb6bf', f:'#6d7580', G:'#ffd24a', H:'#ffffff', '.':''
};
function soldadoLinhas(variante, atirando, morto){
  var L = [];
  for (var i = 0; i < 32; i++) L.push("....................");
  if (morto){ L[23] = "AAAA...bbbbbb......."; L[24] = "AAAA..AbbbbbAA......"; L[25] = "AAAAAAAAAAAAAA......"; L[26] = "AAAAAAAAAAAAAA......"; }
  else {
    L[0]  = ".....AAAAAAAA.....";
    L[1]  = "....AAAAAAAAAA....";
    L[2]  = "....AAAAAAAAAA....";
    L[3]  = "...SSSSSSSSSSSS...";
    L[4]  = "...S.EE.SS.EE.S...";
    L[5]  = "...SSSSSSSSSSSS...";
    L[6]  = "....SS.SSSSSS.S...";
    L[7]  = "..CCbbbbbbbbbbCC..";
    L[8]  = ".CCCbbbbbbbbbbCCCC";
    L[9]  = ".CCbbbbbbbFbbbCC.C";
    if (atirando){
      L[9]  = ".CCbbbbbbGbbbbCC.C";
      L[10] = ".CCbbbbbDFbbbbCCCCC";
      L[11] = "CCCbbbbbbbbbbCC";
      L[12] = ".CCbbbbbbbbbbCC";
      L[13] = ".CCbbbbbbbbCCC";
      L[14] = ".CCbbbbbbbbCC.";
      L[15] = "..CbbbbbbbCC...";
      L[16] = "..CbbbbbC......";
      L[17] = "..CbbbbbC......";
      L[18] = "..CbbbbbC......";
      L[19] = "..CbbbbbbC.....";
      L[20] = "..CbbbbbC......";
      L[21] = "..CCbbbCC......";
      L[22] = "..CAAASSAA.....";
      L[23] = "..C.CAAASSA....";
      L[24] = "..AAASSAAA.....";
      L[25] = "..AAASAA.......";
      L[26] = ".DDDD..DDDD....";
      L[27] = ".DDDD..DDDD....";
    } else if (variante === 0){
      L[10] = ".CCbbbbbbbbbbCCCC.";
      L[11] = ".CCbbbbbbbbbbCCCC.";
      L[12] = ".CCbbbbbbbbbbCC...";
      L[13] = ".CCbbbbbbbbbbCC.";
      L[14] = ".CCbbbbbbbbbbCC.";
      L[15] = "..CbbbbbbbbbC..";
      L[16] = "..CbbbbbCC.....";
      L[17] = "..CbbbbCC......";
      L[18] = "..CbbbbbC......";
      L[19] = "..CbbbbbC......";
      L[20] = "..CbbbbbbC.....";
      L[21] = "..CbbbbbbC.....";
      L[22] = "..CCAAAACC.....";
      L[23] = "...CAAAACC.....";
      L[24] = "..CC.CAAACC....";
      L[25] = ".CCC..AAAACC...";
      L[26] = "DDDD...DDDD....";
      L[27] = "DDDD...DDDD....";
    } else {
      L[10] = ".CCbbbbbbbbbbCCCC.";
      L[11] = ".CCbbbbbbbbbbCCCC.";
      L[12] = ".CCbbbbbbbbbbCC...";
      L[13] = ".CCbbbbbbbbbbCC.";
      L[14] = ".CCbbbbbbbbbbCC.";
      L[15] = "..CbbbbbbbbbC..";
      L[16] = "....CbbbbbC......";
      L[17] = "...CbbbbCC....";
      L[18] = "...CbbbbbC....";
      L[19] = "..CbbbbbC.....";
      L[20] = "..CbbbbbbC....";
      L[21] = "..CbbbbbbC....";
      L[22] = "..CCAAAACC....";
      L[23] = "..CCAAAACC....";
      L[24] = "...CAAAACC.....";
      L[25] = "..CAAACC.......";
      L[26] = ".DDDDD.DD......";
      L[27] = ".DDDDDDDD......";
    }
  }
  return L;
}

var CORES_ROB = {
  A:'#16181a', B:'#69717c', b:'#464b52', C:'#98a0aa', R:'#ff2b22', O:'#101113',
  D:'#080808', F:'#aeb6bf', f:'#6d7580', G:'#ffd24a', H:'#e8f0ff', '.':''
};
function robotLinhas(variante, atirando, morto){
  var L = [];
  for (var i = 0; i < 32; i++) L.push("....................");
  if (morto){
    L[20] = "....................";
    L[21] = "...AAAAAAAA........";
    L[22] = "..AAAbbbbbAAA......";
    L[23] = "..AbRRbbbbRRbA.....";
    L[24] = "..AAbbbbbbbbAA.....";
    L[25] = "..AAAAAAAAAA.....";
    L[26] = ".AA..........AA....";
    return L;
  }
  L[0]  = "....AAAAAAAAA.....";
  L[1]  = "..AAAAbbbbbAAA....";
  L[2]  = "..AAbbbbbbbbbAA...";
  L[3]  = "..AAARRbbbbRR.....";
  L[4]  = "..AAARRbbbbRR.....";
  L[5]  = "..AAbbbbbbbbAA....";
  L[6]  = "..AAAABBBAAAA.....";
  L[7]  = "..CCCCBBBCCCC.....";
  L[8]  = ".CCbbbbbFbbbbbCC..";
  L[9]  = ".CbbbbbbFbbbbbbC..";
  if (atirando){
    L[10] = ".CbbbbbbFbbbbCCCCC";
    L[11] = ".CbbbbbDFbbbCCCCC.";
    L[12] = ".CbbbbbDbbbbCC....";
    L[13] = ".CbbbbbbbbbbCC....";
    L[14] = ".CbbFbbbbbbCC.....";
    L[15] = ".CbbFbbbbbbCC.....";
    L[16] = ".CbbbbbbbbbbCC....";
    L[17] = "..CbbbbbCC........";
    L[18] = "..CbbbbCC.........";
    L[19] = "..CbbbbbCC........";
    L[20] = "..CbbbbbCC........";
    L[21] = "..CbbbbbCC........";
    L[22] = "..CCbbbCC.........";
    L[23] = "..CCAAAACC........";
    L[24] = "...CAAAACC........";
    L[25] = "..CAAACC..........";
    L[26] = ".DDDD.DDDD........";
    L[27] = ".DDDD.DDDD........";
  } else if (variante === 0){
    L[10] = ".CbbbbbFbbbbbC....";
    L[11] = ".CbbbbbFbbbbbC....";
    L[12] = ".CbbbbbfbbbbCC....";
    L[13] = ".CbbbbbbFbbbCC....";
    L[14] = ".CbbbbbFbbbCC.....";
    L[15] = ".CbbFbbbbCC.......";
    L[16] = ".CbbFbbCC.........";
    L[17] = "..CbbbbbCC........";
    L[18] = "..CbbbbbCC........";
    L[19] = "..CbbbbbCC........";
    L[20] = "..CbbbbbCC........";
    L[21] = "..CCbbbCC.........";
    L[22] = "..CCAAAACC........";
    L[23] = "..CCAAAACC........";
    L[24] = "..CCAAAACC........";
    L[25] = "...CAAAACC........";
    L[26] = ".DDDD..DDDD.......";
    L[27] = ".DDDD..DDDD.......";
  } else {
    L[10] = ".CbbbbbFbbbbbC....";
    L[11] = ".CbbbbbFbbbbbC....";
    L[12] = ".CbbbbbfbbbbCC....";
    L[13] = ".CbbbbbbFbbbCC....";
    L[14] = ".CbbbbbFbbbCC.....";
    L[15] = ".CbbFbbbbCC.......";
    L[16] = ".CbbFbbCC.........";
    L[17] = "..CbbbbbCC........";
    L[18] = "..CbbbbbCC........";
    L[19] = "..CbbbbbCC........";
    L[20] = "..CbbbbbCC........";
    L[21] = "..CCbbbCC.........";
    L[22] = "..CCAAAACC........";
    L[23] = "...CAAAACC........";
    L[24] = "..CAAACC..........";
    L[25] = "..CAAACC..........";
    L[26] = ".DDDDD.DDDD.......";
    L[27] = ".DDDDDDD.DDD......";
  }
  return L;
}

function desenhaCaido(def, linhas, mapaCores){
  var c = desenhaGrade(def, linhas, mapaCores);
  return c;
}
function soldadoCaidoLinha(){
  var L = [];
  for (var i = 0; i < 15; i++){ L.push(".........................."); }
  L[0]  = ".....AAAAAAAA.................";
  L[1]  = "...AAAAAAAAAA.............";
  L[2]  = "..SSSSSSSSSSSSS...........";
  L[3]  = "..S.EE.SS.EE.SS...........";
  L[4]  = "..SSSSSSSSSSSSSS..........";
  L[5]  = "bbbbbbbbbbbbbbbb............";
  L[6]  = "bbbbbbbbbbbbbbbbbb..........";
  L[7]  = "bbbbbbbbbbFbbbbbbbbb........";
  L[8]  = "bbbbbbbbbbbbbbbbbb..........";
  L[9]  = "bbbbbbbbbbbbbb..............";
  L[10] = "AAAddddddddd................";
  L[11] = "AAAddddddddd................";
  L[12] = "............................";
  return L;
}
function robotCaidoLinhas(){
  var L = [];
  for (var i = 0; i < 15; i++){ L.push(".........................."); }
  L[0]  = "............................";
  L[1]  = "............................";
  L[2]  = ".....AAAAAAAAA..............";
  L[3]  = "....AAbbbbbbbAA.............";
  L[4]  = "...AAbbbbbbbbbbAA...........";
  L[5]  = "...AARRbbbbbbRRbA...........";
  L[6]  = "...AARRbbbbbbRRbA...........";
  L[7]  = "...AAbbbbbbbbbbAA...........";
  L[8]  = "....AAAbbbbbbAAAA...........";
  L[9]  = "bbbbbbbbbbbbbbbbbbbbb.......";
  L[10] = "bbbbbbbbbbbbbbbbbbbbbb......";
  L[11] = "bbbbbbbbbFFFFFbbbb........";
  L[12] = "bbbbbbbbbbbbbbbbb.........";
  L[13] = "............................";
  return L;
}

var SPRITES = {};
function criaSprites(){
  SPRITES.sol0 = desenhaGrade(ESP_Soldado, soldadoLinhas(0,false,false), CORES_SOL);
  SPRITES.sol1 = desenhaGrade(ESP_Soldado, soldadoLinhas(1,false,false), CORES_SOL);
  SPRITES.solT = desenhaGrade(ESP_Soldado, soldadoLinhas(0,true,false), CORES_SOL);
  SPRITES.solM = desenhaCaido(ESP_Caido, soldadoCaidoLinha(), CORES_SOL);
  SPRITES.solP = desenhaGrade(ESP_Caido, soldadoCaidoLinha(), CORES_SOL);
  SPRITES.rob0 = desenhaGrade(ESP_Rob, robotLinhas(0,false,false), CORES_ROB);
  SPRITES.rob1 = desenhaGrade(ESP_Rob, robotLinhas(1,false,false), CORES_ROB);
  SPRITES.robT = desenhaGrade(ESP_Rob, robotLinhas(0,true,false), CORES_ROB);
  SPRITES.robP = desenhaGrade(ESP_Caido, robotCaidoLinhas(), CORES_ROB);
  /* itens */
  var kit = ["................","................","...AAAAAA.....","..AAABBBBAAA..","..AAABBBBAAA..","...AAAAAA.....","................","................"];
  var kitB = ["................","...HHHHHH.....","..HHRRRRRRHH..","..HHRRRRRRHH..","..HHRRRRRRHH..","...HHHHHH.....","...HHHHHH.....","...HHHHHH....."];
  SPRITES.kitMedico = desenhaGrade(ESP_Kit, [
    "...HHHHHH.....",
    "..HHHHHHHHHH..",
    "..HHRRRRRRHH..",
    "..HHRRRRRRHH..",
    "..HHRRRRRRHH..",
    "..HHHHHHHHHH..",
    "...HHHHHH.....",
    "................"
  ], { H:'#f4f4f4', R:'#d3222a' });
  SPRITES.municao = desenhaGrade(ESP_Municao, [
    "................",
    "..AAAAAAAAAAAA..",
    "..AGGGGGGGGGGA..",
    "..AAAAAAAAAAAA..",
    "..AAAAAAAAAAAA..",
    "..AAAAAAAAAAAA..",
    "..AffffffffffA..",
    "..AAAAAAAAAAAA..",
    "................",
    "................",
    "................",
    "................",
    "................"
  ], { A:'#2a2a12', G:'#ffcf3f', f:'#8a6c12' });
  SPRITES.municao = desenhaGrade(ESP_Municao, [
    "..AAAAAAAAAAAA..",
    ".AAAAAAAAAAAAAA.",
    ".AGGGGGGGGGGGGA.",
    ".AAAAAAAAAAAAAA.",
    ".AGGGGGGGGGGGGA.",
    ".AAAAAAAAAAAAAA.",
    ".AAAAAAAAAAAAAA.",
    ".AAAAAAAAAAAAAA.",
    ".AAAAAAAAAAAAAA.",
    ".AAAAAAAAAAAAAA.",
    ".AAAAAAAAAAAAAA.",
    ".AAAAAAAAAAAAAA.",
    "..AAAAAAAAAAAA.."
  ], { A:'#c8a11c', G:'#ffe06a' });
  SPRITES.chave = desenhaGrade(ESP_Chave, [
    "..AAAA........",
    ".AAAAAA.......",
    ".AAAAAA.......",
    "..AAAA........",
    ".AAAAAAA......",
    "AAAAAAA......",
    ".AAAAAA.......",
    "..AAAA........",
    "................",
    "................",
    "................",
    "................",
    "................",
    "................",
    "................",
    "................"
  ], { A:'#ffbf1f' });
  SPRITES.chave = desenhaGrade(ESP_Chave, [
    "....AAAA......",
    "...AAAAAA.....",
    "...AAAAAA.....",
    "....AAAA......",
    "...AAAAAA.....",
    "....AAAA......",
    "....AAAA......",
    "...AAAAAAA....",
    "....AAAA......",
    "...AAAAAAA....",
    "....AAAA......",
    "................",
    "................",
    "................",
    "................",
    "................"
  ], { A:'#ffc21c' });
}

/* ==========================================================================
   SOM gerado pelo navegador
   ========================================================================== */
var AUDIO = null, MESTRA = null, MUSICA = null, SOM_LIGADO = true, BOM_MUSICA = null;
var ultimoSomTiro = 0, ultimoSomDano = 0;

function audioBase(){
  if (AUDIO) return AUDIO;
  var AC = window.AudioContext || window.webkitAudioContext;
  if (!AC) return null;
  AUDIO = new AC();
  MESTRA = AUDIO.createGain();
  MESTRA.gain.value = SOM_LIGADO ? 0.5 : 0;
  MESTRA.connect(AUDIO.destination);
  MUSICA = AUDIO.createGain();
  MUSICA.gain.value = 0;
  MUSICA.connect(MESTRA);
  return AUDIO;
}
function nota(f, ini, dur, tipo, vol, destino){
  var ac = audioBase(); if (!ac) return;
  var o = ac.createOscillator(), g = ac.createGain();
  o.type = tipo || 'sine';
  o.frequency.value = f;
  g.gain.value = 0;
  g.gain.setValueAtTime(0, ini);
  g.gain.linearRampToValueAtTime(vol, ini + 0.008);
  g.gain.exponentialRampToValueAtTime(0.0001, ini + dur);
  o.connect(g); g.connect(destino || MESTRA);
  o.start(ini); o.stop(ini + dur + 0.02);
  return o;
}
function ruidoPuro(ini, dur, atenua, filtro, tipo){
  var ac = audioBase(); if (!ac) return;
  var n = ac.createBufferSource();
  var br = ac.createBuffer(1, Math.max(1, Math.floor(ac.sampleRate * dur)), ac.sampleRate);
  var d = br.getChannelData(0);
  for (var i = 0; i < d.length; i++) d[i] = Math.random() * 2 - 1;
  n.buffer = br;
  var g = ac.createGain(), f = ac.createBiquadFilter();
  f.type = tipo || 'lowpass';
  f.frequency.value = filtro;
  g.gain.setValueAtTime(atenua, ini);
  g.gain.exponentialRampToValueAtTime(0.0001, ini + dur);
  n.connect(f); f.connect(g); g.connect(MESTRA);
  n.start(ini); n.stop(ini + dur + 0.02);
}
function toque(f, ini, dur, vol, tipo, alvo){
  var ac = audioBase(); if (!ac) return;
  var o = ac.createOscillator(), g = ac.createGain();
  o.type = tipo || 'triangle';
  o.frequency.value = f;
  g.gain.setValueAtTime(0, ini);
  g.gain.linearRampToValueAtTime(vol, ini + 0.01);
  g.gain.exponentialRampToValueAtTime(0.0001, ini + dur);
  o.connect(g); g.connect(alvo || MESTRA);
  o.start(ini); o.stop(ini + dur + 0.02);
}
function somPuro(tipo){
  var ac = audioBase(); if (!ac) return;
  if (AUDIO.state === 'suspended'){ try { AUDIO.resume(); } catch(e){} }
  var t = AUDIO.currentTime;
  if (tipo === 'tiro'){
    if (t - ultimoSomTiro < 0.05) return;
    ultimoSomTiro = t;
    ruidoPuro(t, 0.16, 0.5, 2400, 'lowpass');
    var o = AUDIO.createOscillator(), g = AUDIO.createGain();
    o.type = 'sawtooth';
    o.frequency.setValueAtTime(950, t); o.frequency.exponentialRampToValueAtTime(70, t + 0.13);
    g.gain.setValueAtTime(0.28, t); g.gain.exponentialRampToValueAtTime(0.0001, t + 0.16);
    o.connect(g); g.connect(MESTRA); o.start(t); o.stop(t + 0.18);
  } else if (tipo === 'tiroInimigo'){
    ruidoPuro(t, 0.10, 0.20, 1500, 'lowpass');
    var o = AUDIO.createOscillator(), g = AUDIO.createGain();
    o.type = 'square';
    o.frequency.setValueAtTime(420, t); o.frequency.exponentialRampToValueAtTime(140, t + 0.09);
    g.gain.setValueAtTime(0.12, t); g.gain.exponentialRampToValueAtTime(0.0001, t + 0.1);
    o.connect(g); g.connect(MESTRA); o.start(t); o.stop(t + 0.12);
  } else if (tipo === 'dano'){
    if (t - ultimoSomDano < 0.08) return;
    ultimoSomDano = t;
    ruidoPuro(t, 0.14, 0.5, 500, 'lowpass');
    nota(150, t, 0.12, 'triangle', 0.22);
    nota(120, t + 0.05, 0.2, 'triangle', 0.20);
  } else if (tipo === 'item'){
    var f = [520, 660, 880];
    for (var i = 0; i < f.length; i++) toque(f[i], t + i*0.07, 0.16, 0.22, 'triangle');
  } else if (tipo === 'chave'){
    toque(880, t, 0.14, 0.2, 'square');
    toque(1320, t + 0.06, 0.18, 0.16, 'square');
  } else if (tipo === 'porta'){
    ru