static bool IsShorterBy(int height, PixelGetter pixels, int x, int z)
{
if (x >= pixels.Width || x < 0 || z >= pixels.Height || z < 0)
{
return(false);
}
int neighbourHeight = pixels.Get(x, z).R;
return(height >= neighbourHeight + 2);
}
void OutputPixels(PixelGetter pixels, DrawOpOutput output)
{
int width = pixels.Width, height = pixels.Height;
int srcY = height - 1; // need to flip coords in bitmap vertically
for (int yy = 0; yy < height; yy++, srcY--)
{
for (int xx = 0; xx < width; xx++)
{
Pixel P = pixels.Get(xx, srcY);
ushort x = (ushort)(Origin.X + dx.X * xx + dy.X * yy);
ushort y = (ushort)(Origin.Y + dx.Y * xx + dy.Y * yy);
ushort z = (ushort)(Origin.Z + dx.Z * xx + dy.Z * yy);
if (P.A < 20)
{
output(Place(x, y, z, Block.Air)); continue;
}
BlockID block;
if (!DualLayer)
{
block = selector.BestMatch(P.R, P.G, P.B);
}
else
{
bool backLayer;
block = selector.BestMatch(P.R, P.G, P.B, out backLayer);
if (backLayer)
{
x = (ushort)(x + adj.X);
z = (ushort)(z + adj.Z);
}
}
output(Place(x, y, z, block));
}
}
}
void OutputPixels(PixelGetter pixels, DrawOpOutput output)
{
int width = pixels.Width, height = pixels.Height;
for (int yy = 0; yy < height; yy++)
{
for (int xx = 0; xx < width; xx++)
{
Pixel P = pixels.Get(xx, yy);
ushort x = (ushort)(Origin.X + dx.X * xx + dy.X * yy);
ushort y = (ushort)(Origin.Y + dx.Y * xx + dy.Y * yy);
ushort z = (ushort)(Origin.Z + dx.Z * xx + dy.Z * yy);
if (P.A < 20)
{
output(Place(x, y, z, ExtBlock.Air)); continue;
}
byte raw = 0;
if (!DualLayer)
{
raw = selector.BestMatch(P.R, P.G, P.B);
}
else
{
bool backLayer;
raw = selector.BestMatch(P.R, P.G, P.B, out backLayer);
if (backLayer)
{
x = (ushort)(x + adj.X);
z = (ushort)(z + adj.Z);
}
}
output(Place(x, y, z, ExtBlock.FromRaw(raw)));
}
}
}
public static bool Generate(Player p, Level lvl, string url)
{
if (url.Length == 0)
{
p.Message("You need to provide a url for the image."); return(false);
}
byte[] data = HttpUtil.DownloadImage(url, p);
if (data == null)
{
return(false);
}
Bitmap bmp = DecodeImage(data, p);
if (bmp == null)
{
return(false);
}
int index = 0, oneY = lvl.Width * lvl.Length;
try {
if (lvl.Width != bmp.Width || lvl.Length != bmp.Height)
{
p.Message("&cHeightmap size ({0}x{1}) does not match Width x Length ({2}x{3}) of the level",
bmp.Width, bmp.Height, lvl.Width, lvl.Length);
p.Message("&cAs such, the map may not look accurate.");
bmp = Resize(bmp, lvl.Width, lvl.Length);
}
using (PixelGetter pixels = new PixelGetter(bmp)) {
pixels.Init();
for (int z = 0; z < pixels.Height; z++)
{
for (int x = 0; x < pixels.Width; x++)
{
int height = pixels.Get(x, z).R;
byte layer = Block.Dirt, top = Block.Grass;
if (
IsShorterBy(height, pixels, x - 1, z) ||
IsShorterBy(height, pixels, x + 1, z) ||
IsShorterBy(height, pixels, x, z - 1) ||
IsShorterBy(height, pixels, x, z + 1))
{
layer = Block.Stone; top = Block.Stone;
}
// remap from 0..255 to 0..lvl.Height
height = height * lvl.Height / 255;
for (int y = 0; y < height - 1; y++)
{
lvl.blocks[index + oneY * y] = layer;
}
if (height > 0)
{
lvl.blocks[index + oneY * (height - 1)] = top;
}
index++;
}
}
}
// Cannot use using { } here because bmp may be reassigned
} finally { bmp.Dispose(); }
return(true);
}
public static bool Generate(Player p, Level lvl, string args)
{
if (args.Length == 0)
{
p.Message("You need to provide a url for the image."); return(false);
}
if (!DownloadImage(args, "extra/heightmap/", p))
{
return(false);
}
Bitmap bmp = ReadBitmap("tempImage_" + p.name, "extra/heightmap/", p);
if (bmp == null)
{
return(false);
}
int index = 0, oneY = lvl.Width * lvl.Length;
using (bmp) {
if (lvl.Width != bmp.Width || lvl.Length != bmp.Height)
{
p.Message("The size of the heightmap is {0} by {1}.", bmp.Width, bmp.Height);
p.Message("The width and length of the new level must match that size.");
return(false);
}
using (PixelGetter pixels = new PixelGetter(bmp)) {
pixels.Init();
for (int z = 0; z < pixels.Height; z++)
{
for (int x = 0; x < pixels.Width; x++)
{
int height = pixels.Get(x, z).R;
byte layer = Block.Dirt, top = Block.Grass;
if (
IsShorterBy(height, pixels, x - 1, z) ||
IsShorterBy(height, pixels, x + 1, z) ||
IsShorterBy(height, pixels, x, z - 1) ||
IsShorterBy(height, pixels, x, z + 1))
{
layer = Block.Stone; top = Block.Stone;
}
height = height * lvl.Height / 255;
for (int y = 0; y < height - 1; y++)
{
lvl.blocks[index + oneY * y] = layer;
}
if (height > 0)
{
lvl.blocks[index + oneY * (height - 1)] = top;
}
index++;
}
}
}
}
return(true);
}