📦 WAD System

// Fetch a WAD file
const response = await fetch('freedoom1.wad');
const buffer = await response.arrayBuffer();

// Parse the WAD
const wad = new WADLoader();
wad.load(buffer);

// List available maps
const maps = wad.getMapNames();  // ['E1M1', 'E1M2', ...]

// Parse a map
const mapData = wad.getMap('E1M1');

// Convert to Nova64 3D geometry
const level = convertWADMap(mapData);

// Build walls from converted data
for (const w of level.walls) {
  createCube(w.len, 0xaaaaaa, [w.x, w.y, w.z], {
    scaleY: w.h, scaleZ: 0.1,
    material: 'standard', roughness: 0.8
  });
}

// Set player start position
setCameraPosition(level.playerStart.x, 1.5, level.playerStart.z);

const wad = new WADLoader();
wad.load(buffer);

// Create texture manager
const texMgr = new WADTextureManager(wad);
texMgr.init();

// Get a wall texture as Three.js DataTexture
const tex = texMgr.getWallTexture('STARTAN3');

// Get a floor flat texture
const flat = texMgr.getFlatTexture('FLOOR0_1');

// Get a sprite for a monster type
const sprite = texMgr.getSpriteTexture(3004);  // Former Human

let wadLoaded = false;

export function init() {
  // Listen for file drop on the canvas
  document.addEventListener('drop', async (e) => {
    e.preventDefault();
    const file = e.dataTransfer.files[0];
    if (!file || !file.name.endsWith('.wad')) return;

    const buffer = await file.arrayBuffer();
    const wad = new WADLoader();
    wad.load(buffer);

    const maps = wad.getMapNames();
    if (maps.length > 0) {
      buildLevel(wad, maps[0]);
      wadLoaded = true;
    }
  });

  document.addEventListener('dragover', (e) => e.preventDefault());
}

const level = convertWADMap(mapData);
const texMgr = new WADTextureManager(wad);
texMgr.init();

for (const w of level.walls) {
  const wallId = createCube(w.len, 0xaaaaaa, [w.x, w.y, w.z], {
    scaleY: w.h, scaleZ: 0.1
  });
  rotateMesh(wallId, 0, w.ang, 0);

  // Apply WAD texture
  if (w.texName) {
    const tex = texMgr.getWallTexture(w.texName);
    const def = texMgr.getTextureDef(w.texName);
    if (tex && def) {
      const mesh = getMesh(wallId);
      mesh.material.map = tex;
      mesh.material.needsUpdate = true;
      setWallUVs(wallId, w.len * 20, w.h * 20,
        def.width, def.height, w.xoff, w.yoff);
    }
  }
}