/*
* c02 c12 c22
* c01 c11 c21
* c00 c10 c20
*/
public void CubeBlock(int x, int y, int z, TerrainManager terrain, Rect[] texCoord, Color ca, Color cb, Color cc, Color cd)
{
Chunk c11 = terrain.ChunkWithBlock(x, y, z);
Chunk c21 = terrain.ChunkWithBlock(x + 1, y, z);
Chunk c01 = terrain.ChunkWithBlock(x - 1, y, z);
Chunk c12 = terrain.ChunkWithBlock(x, y, z + 1);
Chunk c10 = terrain.ChunkWithBlock(x, y, z - 1);
Chunk c02 = terrain.ChunkWithBlock(x - 1, y, z + 1);
Chunk c22 = terrain.ChunkWithBlock(x + 1, y, z + 1);
Chunk c00 = terrain.ChunkWithBlock(x - 1, y, z - 1);
Chunk c20 = terrain.ChunkWithBlock(x + 1, y, z - 1);
int x2 = x & Chunk.SIZE_X_MINUS_ONE;
int z2 = z & Chunk.SIZE_Z_MINUS_ONE;
// l is short for light
// light intencity at a, b, c, d
float la, lb, lc, ld;
// sm stands for shadow mask
float sm;
Color gi;
// cell face: x positive
if (BlockManager.blocks[c21[(x + 1) & Chunk.SIZE_X_MINUS_ONE, y, z2].index].isTransparent)
{
la = CalculateLighting(c20[ClipX(x2 + 1), y, ClipZ(z2 - 1)].lightF, c20[ClipX(x2 + 1), y + 1, ClipZ(z2 - 1)].lightF, c21[ClipX(x2 + 1), y + 1, z2].lightF, c21[ClipX(x2 + 1), y, z2].lightF);
lb = CalculateLighting(c21[ClipX(x2 + 1), y, z2].lightF, c21[ClipX(x2 + 1), y + 1, z2].lightF, c22[ClipX(x2 + 1), y + 1, ClipZ(z2 + 1)].lightF, c22[ClipX(x2 + 1), y, ClipZ(z2 + 1)].lightF);
lc = CalculateLighting(c21[ClipX(x2 + 1), y - 1, z2].lightF, c21[ClipX(x2 + 1), y, z2].lightF, c22[ClipX(x2 + 1), y, ClipZ(z2 + 1)].lightF, c22[ClipX(x2 + 1), y - 1, ClipZ(z2 + 1)].lightF);
ld = CalculateLighting(c20[ClipX(x2 + 1), y - 1, ClipZ(z2 - 1)].lightF, c20[ClipX(x2 + 1), y, ClipZ(z2 - 1)].lightF, c21[ClipX(x2 + 1), y, z2].lightF, c21[ClipX(x2 + 1), y - 1, z2].lightF);
ShadedVerticeQuad(new Vector3(x2 + 1, y + 1, z2),
new Vector3(x2 + 1, y + 1, z2 + 1),
new Vector3(x2 + 1, y, z2 + 1),
new Vector3(x2 + 1, y, z2),
la, lb, lc, ld);
TexQuad(texCoord[CellFace.Left]);
sm = shadowMasks[CellFace.Left];
gi = GIs[CellFace.Left];
ColorQuad(
(ca * sm + gi) * la,
(cb * sm + gi) * lb,
(cc * sm + gi) * lc,
(cd * sm + gi) * ld);
}
// cell face: x negative
if (BlockManager.blocks[c01[(x - 1) & Chunk.SIZE_X_MINUS_ONE, y, z2].index].isTransparent)
{
la = CalculateLighting(c01[ClipX(x2 - 1), y, z2].lightF, c01[ClipX(x2 - 1), y + 1, z2].lightF, c02[ClipX(x2 - 1), y + 1, ClipZ(z2 + 1)].lightF, c02[ClipX(x2 - 1), y, ClipZ(z2 + 1)].lightF);
lb = CalculateLighting(c00[ClipX(x2 - 1), y, ClipZ(z2 - 1)].lightF, c00[ClipX(x2 - 1), y + 1, ClipZ(z2 - 1)].lightF, c01[ClipX(x2 - 1), y + 1, z2].lightF, c01[ClipX(x2 - 1), y, z2].lightF);
lc = CalculateLighting(c00[ClipX(x2 - 1), y - 1, ClipZ(z2 - 1)].lightF, c00[ClipX(x2 - 1), y, ClipZ(z2 - 1)].lightF, c01[ClipX(x2 - 1), y, z2].lightF, c01[ClipX(x2 - 1), y - 1, z2].lightF);
ld = CalculateLighting(c01[ClipX(x2 - 1), y - 1, z2].lightF, c01[ClipX(x2 - 1), y, z2].lightF, c02[ClipX(x2 - 1), y, ClipZ(z2 + 1)].lightF, c02[ClipX(x2 - 1), y - 1, ClipZ(z2 + 1)].lightF);
ShadedVerticeQuad(new Vector3(x2, y + 1, z2 + 1),
new Vector3(x2, y + 1, z2),
new Vector3(x2, y, z2),
new Vector3(x2, y, z2 + 1),
la, lb, lc, ld);
TexQuad(texCoord[CellFace.Right]);
sm = shadowMasks[CellFace.Right];
gi = GIs[CellFace.Right];
ColorQuad(
(ca * sm + gi) * la,
(cb * sm + gi) * lb,
(cc * sm + gi) * lc,
(cd * sm + gi) * ld);
}
// cell face: z positive
if (BlockManager.blocks[c12[x2, y, (z + 1) & Chunk.SIZE_Z_MINUS_ONE].index].isTransparent)
{
la = CalculateLighting(c22[ClipX(x2 + 1), y + 1, ClipZ(z2 + 1)].lightF, c12[x2, y + 1, ClipZ(z2 + 1)].lightF, c22[ClipX(x2 + 1), y, ClipZ(z2 + 1)].lightF, c12[x2, y, ClipZ(z2 + 1)].lightF);
lb = CalculateLighting(c12[x2, y + 1, ClipZ(z2 + 1)].lightF, c02[ClipX(x2 - 1), y + 1, ClipZ(z2 + 1)].lightF, c12[x2, y, ClipZ(z2 + 1)].lightF, c02[ClipX(x2 - 1), y, ClipZ(z2 + 1)].lightF);
lc = CalculateLighting(c12[x2, y, ClipZ(z2 + 1)].lightF, c02[ClipX(x2 - 1), y, ClipZ(z2 + 1)].lightF, c12[x2, y - 1, ClipZ(z2 + 1)].lightF, c02[ClipX(x2 - 1), y - 1, ClipZ(z2 + 1)].lightF);
ld = CalculateLighting(c22[ClipX(x2 + 1), y, ClipZ(z2 + 1)].lightF, c12[x2, y, ClipZ(z2 + 1)].lightF, c22[ClipX(x2 + 1), y - 1, ClipZ(z2 + 1)].lightF, c12[x2, y - 1, ClipZ(z2 + 1)].lightF);
ShadedVerticeQuad(new Vector3(x2 + 1, y + 1, z2 + 1),
new Vector3(x2, y + 1, z2 + 1),
new Vector3(x2, y, z2 + 1),
new Vector3(x2 + 1, y, z2 + 1),
la, lb, lc, ld);
TexQuad(texCoord[CellFace.Front]);
sm = shadowMasks[CellFace.Front];
gi = GIs[CellFace.Front];
ColorQuad(
(ca * sm + gi) * la,
(cb * sm + gi) * lb,
(cc * sm + gi) * lc,
(cd * sm + gi) * ld);
}
// cell face: z negative
if (BlockManager.blocks[c10[x2, y, (z - 1) & Chunk.SIZE_Z_MINUS_ONE].index].isTransparent)
{
la = CalculateLighting(c10[x2, y + 1, ClipZ(z2 - 1)].lightF, c00[ClipX(x2 - 1), y + 1, ClipZ(z2 - 1)].lightF, c10[x2, y, ClipZ(z2 - 1)].lightF, c00[ClipX(x2 - 1), y, ClipZ(z2 - 1)].lightF);
lb = CalculateLighting(c20[ClipX(x2 + 1), y + 1, ClipZ(z2 - 1)].lightF, c10[x2, y + 1, ClipZ(z2 - 1)].lightF, c20[ClipX(x2 + 1), y, ClipZ(z2 - 1)].lightF, c10[x2, y, ClipZ(z2 - 1)].lightF);
lc = CalculateLighting(c20[ClipX(x2 + 1), y, ClipZ(z2 - 1)].lightF, c10[x2, y, ClipZ(z2 - 1)].lightF, c20[ClipX(x2 + 1), y - 1, ClipZ(z2 - 1)].lightF, c10[x2, y - 1, ClipZ(z2 - 1)].lightF);
ld = CalculateLighting(c10[x2, y, ClipZ(z2 - 1)].lightF, c00[ClipX(x2 - 1), y, ClipZ(z2 - 1)].lightF, c10[x2, y - 1, ClipZ(z2 - 1)].lightF, c00[ClipX(x2 - 1), y - 1, ClipZ(z2 - 1)].lightF);
ShadedVerticeQuad(new Vector3(x2, y + 1, z2),
new Vector3(x2 + 1, y + 1, z2),
new Vector3(x2 + 1, y, z2),
new Vector3(x2, y, z2),
la, lb, lc, ld);
TexQuad(texCoord[CellFace.Back]);
sm = shadowMasks[CellFace.Back];
gi = GIs[CellFace.Back];
ColorQuad(
(ca * sm + gi) * la,
(cb * sm + gi) * lb,
(cc * sm + gi) * lc,
(cd * sm + gi) * ld);
}
// cell face: y positive
if (BlockManager.blocks[c11[x2, y + 1, z2].index].isTransparent)
{
la = CalculateLighting(c00[ClipX(x2 - 1), y + 1, ClipZ(z2 - 1)].lightF, c01[ClipX(x2 - 1), y + 1, z2].lightF, c11[x2, y + 1, z2].lightF, c10[x2, y + 1, ClipZ(z2 - 1)].lightF);
lb = CalculateLighting(c01[ClipX(x2 - 1), y + 1, z2].lightF, c02[ClipX(x2 - 1), y + 1, ClipZ(z2 + 1)].lightF, c12[x2, y + 1, ClipZ(z2 + 1)].lightF, c11[x2, y + 1, z2].lightF);
lc = CalculateLighting(c11[x2, y + 1, z2].lightF, c12[x2, y + 1, ClipZ(z2 + 1)].lightF, c22[ClipX(x2 + 1), y + 1, ClipZ(z2 + 1)].lightF, c21[ClipX(x2 + 1), y + 1, z2].lightF);
ld = CalculateLighting(c10[x2, y + 1, ClipZ(z2 - 1)].lightF, c11[x2, y + 1, z2].lightF, c21[ClipX(x2 + 1), y + 1, z2].lightF, c20[ClipX(x2 + 1), y + 1, ClipZ(z2 - 1)].lightF);
ShadedVerticeQuad(new Vector3(x2, y + 1, z2),
new Vector3(x2, y + 1, z2 + 1),
new Vector3(x2 + 1, y + 1, z2 + 1),
new Vector3(x2 + 1, y + 1, z2),
la, lb, lc, ld);
TexQuad(texCoord[CellFace.Up]);
sm = shadowMasks[CellFace.Up];
gi = GIs[CellFace.Up];
ColorQuad(
(ca * sm + gi) * la,
(cb * sm + gi) * lb,
(cc * sm + gi) * lc,
(cd * sm + gi) * ld);
}
// cell face: y negative
if (BlockManager.blocks[c11[x2, y - 1, z2].index].isTransparent)
{
ld = CalculateLighting(c01[ClipX(x2 - 1), y - 1, z2].lightF, c02[ClipX(x2 - 1), y - 1, ClipZ(z2 + 1)].lightF, c12[x2, y - 1, ClipZ(z2 + 1)].lightF, c11[x2, y - 1, z2].lightF);
la = CalculateLighting(c00[ClipX(x2 - 1), y - 1, ClipZ(z2 - 1)].lightF, c01[ClipX(x2 - 1), y - 1, z2].lightF, c11[x2, y - 1, z2].lightF, c10[x2, y - 1, ClipZ(z2 - 1)].lightF);
lb = CalculateLighting(c10[x2, y - 1, ClipZ(z2 - 1)].lightF, c11[x2, y - 1, z2].lightF, c21[ClipX(x2 + 1), y - 1, z2].lightF, c20[ClipX(x2 + 1), y - 1, ClipZ(z2 - 1)].lightF);
lc = CalculateLighting(c11[x2, y - 1, z2].lightF, c12[x2, y - 1, ClipZ(z2 + 1)].lightF, c22[ClipX(x2 + 1), y - 1, ClipZ(z2 + 1)].lightF, c21[ClipX(x2 + 1), y - 1, z2].lightF);
ShadedVerticeQuad(new Vector3(x2, y, z2),
new Vector3(x2 + 1, y, z2),
new Vector3(x2 + 1, y, z2 + 1),
new Vector3(x2, y, z2 + 1),
la, lb, lc, ld);
TexQuad(texCoord[CellFace.Down]);
sm = shadowMasks[CellFace.Down];
gi = GIs[CellFace.Down];
ColorQuad(
(ca * sm + gi) * la,
(cb * sm + gi) * lb,
(cc * sm + gi) * lc,
(cd * sm + gi) * ld);
}
}
public void Execute()
{
var chunk = terrain.GetChunk(chunkx, chunkz);
if (chunk.chunkState == Chunk.ChunkState.InvalidLighting)
{
int startx = chunkx << Chunk.CHUNK_X_SHIFT;
int startz = chunkz << Chunk.CHUNK_Z_SHIFT;
for (int z = 0; z < 16; z++)
{
for (int x = 0; x < 16; x++)
{
bool isUnderground = false;
int y = 127;
while (y > 1)
{
var cell = chunk[x, y, z];
if (isUnderground)
{
cell.light = 0;
chunk[x, y, z] = cell;
}
else
{
cell.light = LightSettings.GlobalLightLevel;
chunk[x, y, z] = cell;
lightUpdates.Push(new Vector3Int(x + startx, y, z + startz));
}
if (!isUnderground && !BlockManager.blocks[chunk[x, y - 1, z].index].isTransparent)
{
isUnderground = true;
var shift = chunk.GetShiftData(x, z);
shift.maxHeight = y - 1;
chunk.SetShiftData(x, z, shift);
}
y--;
}
}
}
}
while (lightUpdates.Count > 0)
{
var pos = lightUpdates.Pop();
int light = terrain.GetCell(pos).light;
if (light < 2)
{
continue;
}
Chunk c11 = terrain.ChunkWithBlock(pos.x, pos.y, pos.z);
Chunk c21 = terrain.ChunkWithBlock(pos.x + 1, pos.y, pos.z);
Chunk c01 = terrain.ChunkWithBlock(pos.x - 1, pos.y, pos.z);
Chunk c12 = terrain.ChunkWithBlock(pos.x, pos.y, pos.z + 1);
Chunk c10 = terrain.ChunkWithBlock(pos.x, pos.y, pos.z - 1);
Chunk c02 = terrain.ChunkWithBlock(pos.x - 1, pos.y, pos.z + 1);
Chunk c22 = terrain.ChunkWithBlock(pos.x + 1, pos.y, pos.z + 1);
Chunk c00 = terrain.ChunkWithBlock(pos.x - 1, pos.y, pos.z - 1);
Chunk c20 = terrain.ChunkWithBlock(pos.x + 1, pos.y, pos.z - 1);
if (c21 != null)
{
ProcessCell(new Vector3Int(pos.x + 1, pos.y, pos.z), c21, light);
}
if (c01 != null)
{
ProcessCell(new Vector3Int(pos.x - 1, pos.y, pos.z), c01, light);
}
if (c12 != null)
{
ProcessCell(new Vector3Int(pos.x, pos.y, pos.z + 1), c12, light);
}
if (c10 != null)
{
ProcessCell(new Vector3Int(pos.x, pos.y, pos.z - 1), c10, light);
}
if (pos.y < 127)
{
ProcessCell(new Vector3Int(pos.x, pos.y + 1, pos.z), c11, light);
}
if (pos.y > 1)
{
ProcessCell(new Vector3Int(pos.x, pos.y - 1, pos.z), c11, light);
}
}
}