void RebuildSides(int groundLevel, int axisSize)
{
sidesVertices = 0;
foreach (Rectangle rec in rects)
{
sidesVertices += Utils.CountVertices(rec.Width, rec.Height, axisSize); // YQuads outside
}
sidesVertices += Utils.CountVertices(map.Width, map.Length, axisSize); // YQuads beneath map
sidesVertices += 2 * Utils.CountVertices(map.Width, Math.Abs(groundLevel), axisSize); // ZQuads
sidesVertices += 2 * Utils.CountVertices(map.Length, Math.Abs(groundLevel), axisSize); // XQuads
VertexPos3fTex2fCol4b *vertices = stackalloc VertexPos3fTex2fCol4b[sidesVertices];
IntPtr ptr = (IntPtr)vertices;
fullColSides = game.BlockInfo.FullBright[(byte)game.Map.SidesBlock];
FastColour col = fullColSides ? FastColour.White : map.Shadowlight;
foreach (Rectangle rec in rects)
{
DrawY(rec.X, rec.Y, rec.X + rec.Width, rec.Y + rec.Height, groundLevel, axisSize, col, ref vertices);
}
// Work properly for when ground level is below 0
int y1 = 0, y2 = groundLevel;
if (groundLevel < 0)
{
y1 = groundLevel;
y2 = 0;
}
DrawY(0, 0, map.Width, map.Length, 0, axisSize, col, ref vertices);
DrawZ(0, 0, map.Width, y1, y2, axisSize, col, ref vertices);
DrawZ(map.Length, 0, map.Width, y1, y2, axisSize, col, ref vertices);
DrawX(0, 0, map.Length, y1, y2, axisSize, col, ref vertices);
DrawX(map.Width, 0, map.Length, y1, y2, axisSize, col, ref vertices);
sidesVb = graphics.CreateVb(ptr, VertexFormat.Pos3fTex2fCol4b, sidesVertices);
}
void RebuildEdges(int waterLevel, int axisSize)
{
edgesVertices = 0;
foreach (Rectangle rec in rects)
{
edgesVertices += Utils.CountVertices(rec.Width, rec.Height, axisSize); // YPlanes outside
}
VertexPos3fTex2fCol4b *vertices = stackalloc VertexPos3fTex2fCol4b[edgesVertices];
IntPtr ptr = (IntPtr)vertices;
fullColEdge = game.BlockInfo.FullBright[(byte)game.Map.EdgeBlock];
FastColour col = fullColEdge ? FastColour.White : map.Sunlight;
foreach (Rectangle rec in rects)
{
DrawY(rec.X, rec.Y, rec.X + rec.Width, rec.Y + rec.Height, waterLevel, axisSize, col, ref vertices);
}
edgesVb = graphics.CreateVb(ptr, VertexFormat.Pos3fTex2fCol4b, edgesVertices);
}
void DrawY(int x1, int z1, int x2, int z2, int y, int axisSize, FastColour col, ref VertexPos3fTex2fCol4b *vertices)
{
int endX = x2, endZ = z2, startZ = z1;
for ( ; x1 < endX; x1 += axisSize)
{
x2 = x1 + axisSize;
if (x2 > endX)
{
x2 = endX;
}
z1 = startZ;
for ( ; z1 < endZ; z1 += axisSize)
{
z2 = z1 + axisSize;
if (z2 > endZ)
{
z2 = endZ;
}
TextureRec rec = new TextureRec(0, 0, x2 - x1, z2 - z1);
* vertices++ = new VertexPos3fTex2fCol4b(x1, y, z1, rec.U1, rec.V1, col);
* vertices++ = new VertexPos3fTex2fCol4b(x1, y, z2, rec.U1, rec.V2, col);
* vertices++ = new VertexPos3fTex2fCol4b(x2, y, z2, rec.U2, rec.V2, col);
* vertices++ = new VertexPos3fTex2fCol4b(x2, y, z1, rec.U2, rec.V1, col);
}
}
}
void DrawZ(int z, int x1, int x2, int y1, int y2, int axisSize, FastColour col, ref VertexPos3fTex2fCol4b *vertices)
{
int endX = x2, endY = y2, startY = y1;
for ( ; x1 < endX; x1 += axisSize)
{
x2 = x1 + axisSize;
if (x2 > endX)
{
x2 = endX;
}
y1 = startY;
for ( ; y1 < endY; y1 += axisSize)
{
y2 = y1 + axisSize;
if (y2 > endY)
{
y2 = endY;
}
TextureRec rec = new TextureRec(0, 0, x2 - x1, y2 - y1);
* vertices++ = new VertexPos3fTex2fCol4b(x1, y1, z, rec.U1, rec.V2, col);
* vertices++ = new VertexPos3fTex2fCol4b(x1, y2, z, rec.U1, rec.V1, col);
* vertices++ = new VertexPos3fTex2fCol4b(x2, y2, z, rec.U2, rec.V1, col);
* vertices++ = new VertexPos3fTex2fCol4b(x2, y1, z, rec.U2, rec.V2, col);
}
}
}
void DrawX(int x, int z1, int z2, int y1, int y2, int axisSize, FastColour col, ref VertexPos3fTex2fCol4b *vertices)
{
int endZ = z2, endY = y2, startY = y1;
for ( ; z1 < endZ; z1 += axisSize)
{
z2 = z1 + axisSize;
if (z2 > endZ)
{
z2 = endZ;
}
y1 = startY;
for ( ; y1 < endY; y1 += axisSize)
{
y2 = y1 + axisSize;
if (y2 > endY)
{
y2 = endY;
}
TextureRec rec = new TextureRec(0, 0, z2 - z1, y2 - y1);
* vertices++ = new VertexPos3fTex2fCol4b(x, y1, z1, rec.U1, rec.V2, col);
* vertices++ = new VertexPos3fTex2fCol4b(x, y2, z1, rec.U1, rec.V1, col);
* vertices++ = new VertexPos3fTex2fCol4b(x, y2, z2, rec.U2, rec.V1, col);
* vertices++ = new VertexPos3fTex2fCol4b(x, y1, z2, rec.U2, rec.V2, col);
}
}
}
