private Wall ParseWall(Tokenizer levelTokens)
{
levelTokens.EnsureNextToken("WALL");
Wall wall = new Wall();
levelTokens.EnsureNextToken("LEFT:");
wall.V0 = levelTokens.RequireNextInt();
levelTokens.EnsureNextToken("RIGHT:");
wall.V1 = levelTokens.RequireNextInt();
wall.TexMid = ParseWallTex("MID:", levelTokens, true);
wall.TexTop = ParseWallTex("TOP:", levelTokens, true);
wall.TexBottom = ParseWallTex("BOT:", levelTokens, true);
wall.TexSign = ParseWallTex("SIGN:", levelTokens, false);
levelTokens.EnsureNextToken("ADJOIN:");
wall.Adjoin = levelTokens.RequireNextInt();
levelTokens.EnsureNextToken("MIRROR:");
wall.Mirror = levelTokens.RequireNextInt();
levelTokens.EnsureNextToken("WALK:");
wall.Walk = levelTokens.RequireNextInt();
levelTokens.EnsureNextToken("FLAGS:");
wall.Flags0 = (Wall.EFlags0)levelTokens.RequireNextInt();
wall.Flags1 = levelTokens.RequireNextInt();
wall.Flags2 = (Wall.EFlags2)levelTokens.RequireNextInt();
levelTokens.EnsureNextToken("LIGHT:");
wall.Light = levelTokens.RequireNextInt();
return wall;
}
private WallTex ParseWallTex(string name, Tokenizer levelTokens, bool trailing)
{
levelTokens.EnsureNextToken(name);
WallTex tex = new WallTex();
tex.Texture = levelTokens.RequireNextInt();
tex.ShiftX = levelTokens.RequireNextFloat();
tex.ShiftY = levelTokens.RequireNextFloat();
if (trailing) {
levelTokens.RequireNextInt();
}
return tex;
}
private void ParseTextures(Tokenizer levelTokens)
{
levelTokens.EnsureNextToken("TEXTURES");
levelTokens.RequireNextInt();
while (true) {
if (levelTokens.IsNextToken("NUMSECTORS")) {
levelTokens.RequireNextInt(); // eat sector count.
break;
}
string texture = levelTokens.GetNextToken();
_textures.Add(texture);
}
}
private void ParseSectorWalls(Sector sector, Tokenizer levelTokens)
{
levelTokens.EnsureNextToken("WALLS");
int numWalls = levelTokens.RequireNextInt();
for (int i = 0; i < numWalls; ++i) {
Wall wall = ParseWall(levelTokens);
if ((wall.Light + sector.Ambient) > 31) {
wall.Light = 31 - sector.Ambient;
} else if ((wall.Light + sector.Ambient) < 0) {
wall.Light = -sector.Ambient;
}
sector.Walls.Add(wall);
}
}
private void ParseSectorVertices(Sector sector, Tokenizer levelTokens)
{
levelTokens.EnsureNextToken("VERTICES");
int numVerts = levelTokens.RequireNextInt();
for (int i = 0; i < numVerts; ++i) {
Vector2 v;
levelTokens.EnsureNextToken("X:");
v.x = levelTokens.RequireNextFloat();
levelTokens.EnsureNextToken("Z:");
v.y = levelTokens.RequireNextFloat();
sector.Vertices.Add(v);
}
}
private void ParseSectors(Tokenizer levelTokens)
{
string token;
while ((token = levelTokens.GetNextToken()) != null) {
levelTokens.CheckThrow(token == "SECTOR", "Expected SECTOR!");
levelTokens.RequireNextInt();
Sector sector = ParseSectorHeader(levelTokens);
ParseSectorVertices(sector, levelTokens);
ParseSectorWalls(sector, levelTokens);
Sectors.Add(sector);
}
}
private Sector ParseSectorHeader(Tokenizer levelTokens)
{
Sector sector = new Sector();
levelTokens.EnsureNextToken("NAME");
string sectorName = levelTokens.GetNextToken();
if (sectorName != "AMBIENT") {
sector.Name = sectorName;
} else { // unnamed sector
levelTokens.UngetToken();
}
levelTokens.EnsureNextToken("AMBIENT");
sector.Ambient = levelTokens.RequireNextInt();
levelTokens.EnsureNextToken("FLOOR");
levelTokens.EnsureNextToken("TEXTURE");
sector.FloorTex = levelTokens.RequireNextInt();
sector.FloorShiftX = levelTokens.RequireNextFloat();
sector.FloorShiftZ = levelTokens.RequireNextFloat();
levelTokens.RequireNextInt();
levelTokens.EnsureNextToken("FLOOR");
levelTokens.EnsureNextToken("ALTITUDE");
sector.FloorAlt = -levelTokens.RequireNextFloat();
levelTokens.EnsureNextToken("CEILING");
levelTokens.EnsureNextToken("TEXTURE");
sector.CeilTex = levelTokens.RequireNextInt();
sector.CeilShiftX = levelTokens.RequireNextFloat();
sector.CeilShiftZ = levelTokens.RequireNextFloat();
levelTokens.RequireNextInt();
levelTokens.EnsureNextToken("CEILING");
levelTokens.EnsureNextToken("ALTITUDE");
sector.CeilAlt = -levelTokens.RequireNextFloat();
levelTokens.EnsureNextToken("SECOND");
levelTokens.EnsureNextToken("ALTITUDE");
sector.SecondAlt = -levelTokens.RequireNextFloat();
levelTokens.EnsureNextToken("FLAGS");
sector.Flags0 = (Sector.EFlags0)levelTokens.RequireNextInt();
sector.Flags1 = levelTokens.RequireNextInt();
sector.Flags2 = levelTokens.RequireNextInt();
levelTokens.EnsureNextToken("LAYER");
sector.Layer = levelTokens.RequireNextInt();
return sector;
}