public static Texture2D GenerateWallTexture(WallTextureData textureData, Dictionary <string, SpriteData> patches, PaletteData paletteData)
{
Texture2D spriteTexture = new Texture2D(textureData.Width, textureData.Height, TextureFormat.ARGB32, true);
// Make it all alpha=0 to start with
spriteTexture.SetPixels(new Color[textureData.Width * textureData.Height]);
foreach (var patch in textureData.Patches)
{
var sprite = GenerateSprite(patches[patch.PatchName], paletteData);
var w = sprite.width;
var h = sprite.height;
var sl = 0;
var st = 0;
if (patch.XOffset < 0)
{
patch.XOffset = 0;
sl -= patch.XOffset;
w += patch.XOffset;
}
if (patch.XOffset + w > textureData.Width)
{
w = w - ((patch.XOffset + w) - textureData.Width);
}
if (patch.YOffset < 0)
{
patch.YOffset = 0;
st -= patch.YOffset;
h += patch.YOffset;
}
if (patch.YOffset + h > textureData.Height)
{
h = h - ((patch.YOffset + h) - textureData.Height);
}
var dl = patch.XOffset;
var dt = ((textureData.Height) - patch.YOffset) - h;
var data = sprite.GetPixels(sl, st, w, h);
// We need to do this per-pixel so we can do alpha cutout
for (var x = 0; x < w; x++)
{
for (var y = 0; y < h; y++)
{
if (data[x + (y * w)].a > 0)
{
spriteTexture.SetPixel(dl + x, dt + y, data[x + (y * w)]);
}
}
}
}
spriteTexture.Apply();
return(spriteTexture);
}
// Get a dictionary of wall patches based on the patch names listed in the wall texture data
public static Dictionary <string, SpriteData> GetWallPatches(FileStream wadStream, WADInfo wadInfo, WallTextureData textureData)
{
var sprites = new Dictionary <string, SpriteData>();
foreach (var patch in textureData.Patches)
{
if (!sprites.ContainsKey(patch.PatchName))
{
sprites.Add(patch.PatchName, GetPictureSprite(wadStream, wadInfo.EntryDictionary[patch.PatchName]));
}
}
return(sprites);
}