private Vec3D func_298_c(IBlockAccess iblockaccess, int i, int j, int k)
{
Vec3D vec3d = Vec3D.createVector(0.0D, 0.0D, 0.0D);
int l = func_303_b(iblockaccess, i, j, k);
for (int i1 = 0; i1 < 4; i1++)
{
int j1 = i;
int k1 = j;
int l1 = k;
if (i1 == 0)
{
j1--;
}
if (i1 == 1)
{
l1--;
}
if (i1 == 2)
{
j1++;
}
if (i1 == 3)
{
l1++;
}
int i2 = func_303_b(iblockaccess, j1, k1, l1);
if (i2 < 0)
{
if (iblockaccess.getBlockMaterial(j1, k1, l1).getIsSolid())
{
continue;
}
i2 = func_303_b(iblockaccess, j1, k1 - 1, l1);
if (i2 >= 0)
{
int j2 = i2 - (l - 8);
vec3d = vec3d.addVector((j1 - i) * j2, (k1 - j) * j2, (l1 - k) * j2);
}
continue;
}
if (i2 >= 0)
{
int k2 = i2 - l;
vec3d = vec3d.addVector((j1 - i) * k2, (k1 - j) * k2, (l1 - k) * k2);
}
}
if (iblockaccess.getBlockMetadata(i, j, k) >= 8)
{
bool flag = false;
if (flag || shouldSideBeRendered(iblockaccess, i, j, k - 1, 2))
{
flag = true;
}
if (flag || shouldSideBeRendered(iblockaccess, i, j, k + 1, 3))
{
flag = true;
}
if (flag || shouldSideBeRendered(iblockaccess, i - 1, j, k, 4))
{
flag = true;
}
if (flag || shouldSideBeRendered(iblockaccess, i + 1, j, k, 5))
{
flag = true;
}
if (flag || shouldSideBeRendered(iblockaccess, i, j + 1, k - 1, 2))
{
flag = true;
}
if (flag || shouldSideBeRendered(iblockaccess, i, j + 1, k + 1, 3))
{
flag = true;
}
if (flag || shouldSideBeRendered(iblockaccess, i - 1, j + 1, k, 4))
{
flag = true;
}
if (flag || shouldSideBeRendered(iblockaccess, i + 1, j + 1, k, 5))
{
flag = true;
}
if (flag)
{
vec3d = vec3d.normalize().addVector(0.0D, -6D, 0.0D);
}
}
vec3d = vec3d.normalize();
return(vec3d);
}
