/// <summary>
/// Smooth occlusion per face (position in AOArray)
/// </summary>
byte SmoothOcclusion(SmallCube _cube, int _aox, int _aoy, int _aoz, int _vidx, int _side)
{
byte oc = 0;
int offset;
Vector3Int o = new Vector3Int(_aox, _aoy, _aoz);
Vector3Int r = CubeHelpers.SolidVertex[_vidx];
int sign = _side & 1;
int dim = _side >> 1;
if (sign != 0)
{
o[CubeHelpers.D[dim]] += 1;
}
else
{
o[CubeHelpers.D[dim]] -= 1;
}
//current
int x, y, z;
int xx, yy, zz;
x = o[0]; y = o[1]; z = o[2];
x = x + 1;
y = y + 1;
z = z + 1;
xx = x; yy = y; zz = z;
offset = (xx * (FlattenOffsetAO)) + (zz * AO_CUBESIZE_Y) + yy; //3darray[(x * (sy*sz)) + (z * sy) + y]
offset = Math.Max(0, offset);
offset = Math.Min(offset, (AO_CUBESIZE_X * AO_CUBESIZE_Y * AO_CUBESIZE_Z) - 1);
oc += (byte)((int)m_abyOcclusionCubeMap[offset] >> 1);
if (dim == 0)//X
{
int s1 = 1;
int s2 = 1;
if (r[1] == 0)
{
s1 = -s1; //corner
}
if (r[2] == 0)
{
s2 = -s2; //corner
}
//Y-Z
yy = y; zz = z + s2;
offset = (xx * (FlattenOffsetAO)) + (zz * AO_CUBESIZE_Y) + yy;
offset = Math.Max(0, offset);
offset = Math.Min(offset, (AO_CUBESIZE_X * AO_CUBESIZE_Y * AO_CUBESIZE_Z) - 1);
oc += (byte)((int)m_abyOcclusionCubeMap[offset] >> 1);
yy = y + s1; zz = z;
offset = (xx * (FlattenOffsetAO)) + (zz * AO_CUBESIZE_Y) + yy;
offset = Math.Max(0, offset);
offset = Math.Min(offset, (AO_CUBESIZE_X * AO_CUBESIZE_Y * AO_CUBESIZE_Z) - 1);
oc += (byte)((int)m_abyOcclusionCubeMap[offset] >> 1);
yy = y + s1; zz = z + s2;
offset = (xx * (FlattenOffsetAO)) + (zz * AO_CUBESIZE_Y) + yy;
offset = Math.Max(0, offset);
offset = Math.Min(offset, (AO_CUBESIZE_X * AO_CUBESIZE_Y * AO_CUBESIZE_Z) - 1);
oc += (byte)((int)m_abyOcclusionCubeMap[offset] >> 1);
}
else if (dim == 1)//Y
{
int s1 = 1;
int s2 = 1;
if (r[0] == 0)
{
s1 = -s1; //corner
}
if (r[2] == 0)
{
s2 = -s2; //corner
}
//X-Z
xx = x; zz = z + s2;
offset = (xx * (FlattenOffsetAO)) + (zz * AO_CUBESIZE_Y) + yy;
offset = Math.Max(0, offset);
offset = Math.Min(offset, (AO_CUBESIZE_X * AO_CUBESIZE_Y * AO_CUBESIZE_Z) - 1);
oc += (byte)((int)m_abyOcclusionCubeMap[offset] >> 1);
xx = x + s1; zz = z;
offset = (xx * (FlattenOffsetAO)) + (zz * AO_CUBESIZE_Y) + yy;
offset = Math.Max(0, offset);
offset = Math.Min(offset, (AO_CUBESIZE_X * AO_CUBESIZE_Y * AO_CUBESIZE_Z) - 1);
oc += (byte)((int)m_abyOcclusionCubeMap[offset] >> 1);
xx = x + s1; zz = z + s2;
offset = (xx * (FlattenOffsetAO)) + (zz * AO_CUBESIZE_Y) + yy;
offset = Math.Max(0, offset);
offset = Math.Min(offset, (AO_CUBESIZE_X * AO_CUBESIZE_Y * AO_CUBESIZE_Z) - 1);
oc += (byte)((int)m_abyOcclusionCubeMap[offset] >> 1);
}
else if (dim == 2) //Z
{
int s1 = 1;
int s2 = 1;
if (r[0] == 0)
{
s1 = -s1; //corner
}
if (r[1] == 0)
{
s2 = -s2; //corner
}
//X-Y
xx = x; yy = y + s2;
offset = (xx * (FlattenOffsetAO)) + (zz * AO_CUBESIZE_Y) + yy;
offset = Math.Max(0, offset);
offset = Math.Min(offset, (AO_CUBESIZE_X * AO_CUBESIZE_Y * AO_CUBESIZE_Z) - 1);
oc += (byte)((int)m_abyOcclusionCubeMap[offset] >> 1);
xx = x + s1; yy = y;
offset = (xx * (FlattenOffsetAO)) + (zz * AO_CUBESIZE_Y) + yy;
offset = Math.Max(0, offset);
offset = Math.Min(offset, (AO_CUBESIZE_X * AO_CUBESIZE_Y * AO_CUBESIZE_Z) - 1);
oc += (byte)((int)m_abyOcclusionCubeMap[offset] >> 1);
xx = x + s1; yy = y + s2;
offset = (xx * (FlattenOffsetAO)) + (zz * AO_CUBESIZE_Y) + yy;
offset = Math.Max(0, offset);
offset = Math.Min(offset, (AO_CUBESIZE_X * AO_CUBESIZE_Y * AO_CUBESIZE_Z) - 1);
oc += (byte)((int)m_abyOcclusionCubeMap[offset] >> 1);
}
return(oc);
}
public bool RayCast(Vector3 _o, Vector3 _ray, float _dist, ref BoundingBox _obb, ref Vector3Int _oposcubeTrack, out SmallCube _ocube)
{
float cs = (float)CubeHelpers.CUBE_SIZE;
//Step from _o to _ray
float d = 0.0f;
Vector3 p = _o;
_ocube = CubeArray3D.m_emptyCube;
//Debug.WriteLine("RayCast start at {0} dir {1}", p, _ray);
while (d < _dist)
{
//Get cube at _o
int cx = (int)(p.X / CubeHelpers.CUBE_SIZE); //World To Cube unit
int cy = (int)(p.Y / CubeHelpers.CUBE_SIZE);
int cz = (int)(p.Z / CubeHelpers.CUBE_SIZE);
if (cx >= 0 && cy >= 0 && cz >= 0 &&
cx < m_array.CUBESIZEX && cy < m_array.CUBESIZEY && cz < m_array.CUBESIZEZ)
{
SmallCube cube;
m_array.GetCube(cx, cy, cz, out cube);
if (cube.byMatL0 != 0)
{
//Debug.WriteLine("Cube Found at {0},{1},{2}", cx, cy, cz);
_oposcubeTrack.X = cx; //In cube unit
_oposcubeTrack.Y = cy; //In cube unit
_oposcubeTrack.Z = cz;
//BB
_obb.Min.X = (float)(cx * CubeHelpers.CUBE_SIZE); //To world coords
_obb.Min.Y = (float)(cy * CubeHelpers.CUBE_SIZE); //To world coords
_obb.Min.Z = (float)(cz * CubeHelpers.CUBE_SIZE); //To world coords
_obb.Max.X = _obb.Min.X + cs;
_obb.Max.Y = _obb.Min.Y + cs;
_obb.Max.Z = _obb.Min.Z + cs;
_ocube = cube;
return(true);
}
}
d += 1.0f;
p += _ray;
}
//Debug.WriteLine("RayCast end at {0}", p);
return(false);
}
