public static Seg[] FromWad(Wad wad, int lump, Vertex[] vertices, LineDef[] lines)
{
var length = wad.GetLumpSize(lump);
if (length % Seg.DataSize != 0)
{
throw new Exception();
}
var data = wad.ReadLump(lump);
var count = length / Seg.DataSize;
var segs = new Seg[count];;
for (var i = 0; i < count; i++)
{
var offset = Seg.DataSize * i;
segs[i] = Seg.FromData(data, offset, vertices, lines);
}
return(segs);
}
public Map(Wad wad, TextureLookup textures, FlatLookup flats, World world)
{
this.textures = textures;
this.flats = flats;
this.world = world;
var options = world.Options;
string name;
if (wad.Names.Contains("doom") || wad.Names.Contains("doom1"))
{
name = "E" + options.Episode + "M" + options.Map;
}
else
{
name = "MAP" + options.Map.ToString("00");
}
var map = wad.GetLumpNumber(name);
vertices = Vertex.FromWad(wad, map + 4);
sectors = Sector.FromWad(wad, map + 8, flats);
sides = SideDef.FromWad(wad, map + 3, textures, sectors);
lines = LineDef.FromWad(wad, map + 2, vertices, sides);
segs = Seg.FromWad(wad, map + 5, vertices, lines);
subsectors = Subsector.FromWad(wad, map + 6, segs);
nodes = Node.FromWad(wad, map + 7, subsectors);
things = MapThing.FromWad(wad, map + 1);
blockMap = BlockMap.FromWad(wad, map + 10, lines);
reject = Reject.FromWad(wad, map + 9, sectors);
GroupLines();
skyTexture = GetSkyTextureByMapName(name);
}
/// <summary>
/// Calculate on which side of the line the point is.
/// </summary>
/// <returns>
/// 0 (front) or 1 (back).
/// </returns>
public static int PointOnSegSide(Fixed x, Fixed y, Seg line)
{
var lx = line.Vertex1.X;
var ly = line.Vertex1.Y;
var ldx = line.Vertex2.X - lx;
var ldy = line.Vertex2.Y - ly;
if (ldx == Fixed.Zero)
{
if (x <= lx)
{
return(ldy > Fixed.Zero ? 1 : 0);
}
else
{
return(ldy < Fixed.Zero ? 1 : 0);
}
}
if (ldy == Fixed.Zero)
{
if (y <= ly)
{
return(ldx < Fixed.Zero ? 1 : 0);
}
else
{
return(ldx > Fixed.Zero ? 1 : 0);
}
}
var dx = (x - lx);
var dy = (y - ly);
// Try to quickly decide by looking at sign bits.
if (((ldy.Data ^ ldx.Data ^ dx.Data ^ dy.Data) & 0x80000000) != 0)
{
if (((ldy.Data ^ dx.Data) & 0x80000000) != 0)
{
// Left is negative.
return(1);
}
else
{
return(0);
}
}
var left = new Fixed(ldy.Data >> Fixed.FracBits) * dx;
var right = dy * new Fixed(ldx.Data >> Fixed.FracBits);
if (right < left)
{
// Front side.
return(0);
}
else
{
// Back side.
return(1);
}
}
public Map(Wad wad, ITextureLookup textures, IFlatLookup flats, TextureAnimation animation, World world)
{
try
{
this.textures = textures;
this.flats = flats;
this.animation = animation;
this.world = world;
var options = world.Options;
string name;
if (wad.GameMode == GameMode.Commercial)
{
name = "MAP" + options.Map.ToString("00");
}
else
{
name = "E" + options.Episode + "M" + options.Map;
}
Console.Write("Load map '" + name + "': ");
var map = wad.GetLumpNumber(name);
if (map == -1)
{
throw new Exception("Map '" + name + "' was not found!");
}
vertices = Vertex.FromWad(wad, map + 4);
sectors = Sector.FromWad(wad, map + 8, flats);
sides = SideDef.FromWad(wad, map + 3, textures, sectors);
lines = LineDef.FromWad(wad, map + 2, vertices, sides);
segs = Seg.FromWad(wad, map + 5, vertices, lines);
subsectors = Subsector.FromWad(wad, map + 6, segs);
nodes = Node.FromWad(wad, map + 7, subsectors);
things = MapThing.FromWad(wad, map + 1);
blockMap = BlockMap.FromWad(wad, map + 10, lines);
reject = Reject.FromWad(wad, map + 9, sectors);
GroupLines();
skyTexture = GetSkyTextureByMapName(name);
if (options.GameMode == GameMode.Commercial)
{
switch (options.MissionPack)
{
case MissionPack.Plutonia:
title = DoomInfo.MapTitles.Plutonia[options.Map - 1];
break;
case MissionPack.Tnt:
title = DoomInfo.MapTitles.Tnt[options.Map - 1];
break;
default:
title = DoomInfo.MapTitles.Doom2[options.Map - 1];
break;
}
}
else
{
title = DoomInfo.MapTitles.Doom[options.Episode - 1][options.Map - 1];
}
Console.WriteLine("OK");
}
catch (Exception e)
{
Console.WriteLine("Failed");
ExceptionDispatchInfo.Throw(e);
}
}