/// <summary>
/// Sets the light value at the coordinate. If enumskyblock is set to sky it sets it in the skylightmap and if its a
/// block then into the blocklightmap. Args enumSkyBlock, x, y, z, lightValue
/// </summary>
public virtual void SetLightValue(SkyBlock par1EnumSkyBlock, int par2, int par3, int par4, int par5)
{
ExtendedBlockStorage extendedblockstorage = storageArrays[par3 >> 4];
if (extendedblockstorage == null)
{
extendedblockstorage = storageArrays[par3 >> 4] = new ExtendedBlockStorage((par3 >> 4) << 4);
GenerateSkylightMap();
}
IsModified = true;
if (par1EnumSkyBlock == SkyBlock.Sky)
{
if (!WorldObj.WorldProvider.HasNoSky)
{
extendedblockstorage.SetExtSkylightValue(par2, par3 & 0xf, par4, par5);
}
}
else if (par1EnumSkyBlock == SkyBlock.Block)
{
extendedblockstorage.SetExtBlocklightValue(par2, par3 & 0xf, par4, par5);
}
else
{
return;
}
}
/// <summary>
/// Initiates the recalculation of both the block-light and sky-light for a given block inside a chunk.
/// </summary>
private void RelightBlock(int par1, int par2, int par3)
{
int i = HeightMap[par3 << 4 | par1] & 0xff;
int j = i;
if (par2 > i)
{
j = par2;
}
for (; j > 0 && GetBlockLightOpacity(par1, j - 1, par3) == 0; j--)
{
}
if (j == i)
{
return;
}
WorldObj.MarkBlocksDirtyVertical(par1, par3, j, i);
HeightMap[par3 << 4 | par1] = j;
int k = XPosition * 16 + par1;
int l = ZPosition * 16 + par3;
if (!WorldObj.WorldProvider.HasNoSky)
{
if (j < i)
{
for (int i1 = j; i1 < i; i1++)
{
ExtendedBlockStorage extendedblockstorage = storageArrays[i1 >> 4];
if (extendedblockstorage != null)
{
extendedblockstorage.SetExtSkylightValue(par1, i1 & 0xf, par3, 15);
WorldObj.Func_48464_p((XPosition << 4) + par1, i1, (ZPosition << 4) + par3);
}
}
}
else
{
for (int j1 = i; j1 < j; j1++)
{
ExtendedBlockStorage extendedblockstorage1 = storageArrays[j1 >> 4];
if (extendedblockstorage1 != null)
{
extendedblockstorage1.SetExtSkylightValue(par1, j1 & 0xf, par3, 0);
WorldObj.Func_48464_p((XPosition << 4) + par1, j1, (ZPosition << 4) + par3);
}
}
}
int k1 = 15;
do
{
if (j <= 0 || k1 <= 0)
{
break;
}
j--;
int i2 = GetBlockLightOpacity(par1, j, par3);
if (i2 == 0)
{
i2 = 1;
}
k1 -= i2;
if (k1 < 0)
{
k1 = 0;
}
ExtendedBlockStorage extendedblockstorage2 = storageArrays[j >> 4];
if (extendedblockstorage2 != null)
{
extendedblockstorage2.SetExtSkylightValue(par1, j & 0xf, par3, k1);
}
}while (true);
}
int l1 = HeightMap[par3 << 4 | par1];
int j2 = i;
int k2 = l1;
if (k2 < j2)
{
int l2 = j2;
j2 = k2;
k2 = l2;
}
if (!WorldObj.WorldProvider.HasNoSky)
{
UpdateSkylightNeighborHeight(k - 1, l, j2, k2);
UpdateSkylightNeighborHeight(k + 1, l, j2, k2);
UpdateSkylightNeighborHeight(k, l - 1, j2, k2);
UpdateSkylightNeighborHeight(k, l + 1, j2, k2);
UpdateSkylightNeighborHeight(k, l, j2, k2);
}
IsModified = true;
}
/// <summary>
/// Generates the initial skylight map for the chunk upon generation or load.
/// </summary>
public virtual void GenerateSkylightMap()
{
int i = GetTopFilledSegment();
for (int j = 0; j < 16; j++)
{
for (int l = 0; l < 16; l++)
{
PrecipitationHeightMap[j + (l << 4)] = -999;
int j1 = (i + 16) - 1;
do
{
if (j1 <= 0)
{
break;
}
if (GetBlockLightOpacity(j, j1 - 1, l) != 0)
{
HeightMap[l << 4 | j] = j1;
break;
}
j1--;
}while (true);
if (WorldObj.WorldProvider.HasNoSky)
{
continue;
}
j1 = 15;
int k1 = (i + 16) - 1;
do
{
j1 -= GetBlockLightOpacity(j, k1, l);
if (j1 > 0)
{
ExtendedBlockStorage extendedblockstorage = storageArrays[k1 >> 4];
if (extendedblockstorage != null)
{
extendedblockstorage.SetExtSkylightValue(j, k1 & 0xf, l, j1);
WorldObj.Func_48464_p((XPosition << 4) + j, k1, (ZPosition << 4) + l);
}
}
}while (--k1 > 0 && j1 > 0);
}
}
IsModified = true;
for (int k = 0; k < 16; k++)
{
for (int i1 = 0; i1 < 16; i1++)
{
PropagateSkylightOcclusion(k, i1);
}
}
}
