private List <LevelBlock> GetMatchingBlocks(MatchBlock matchBlock)
{
var result = new List <LevelBlock>();
foreach (var block in blocks)
{
var currentBlock = block;
do
{
if (matchBlock.Match(currentBlock))
{
result.Add(currentBlock);
}
currentBlock = currentBlock.GetNextRotation();
} while (currentBlock.currentRotation != 0); // we are back at starting rotation
}
return(result);
}
// yeah... this is quite dirty code, but I did not find any other way, we need to manually check
// all corresponding side to their opposite
private MatchBlock ComputeMatchBlockAtCoord(int x, int z, int y)
{
var match = new MatchBlock();
if (y + 1 >= height) // if upper is outside of bounds, we need to close
{
for (var i = 0; i < 4; i++)
{
match.topFaces[i] = NeededFace.Any;
}
}
else if (_level[x, z, y + 1] == null) // if no block is there yet, we might put anything
{
for (var i = 0; i < 4; i++)
{
match.topFaces[i] = NeededFace.Any;
}
}
else // if there is a block we get what it needs
{
var upperBlock = _level[x, z, y + 1];
for (var i = 0; i < 4; i++)
{
match.topFaces[i] = upperBlock.botFaces[i].nextNeededFace;
}
}
// same but opposite (lower block to bottom)
if (y - 1 < 0)
{
for (var i = 0; i < match.botFaces.Length; i++)
{
match.botFaces[i] = NeededFace.Close;
}
}
else if (_level[x, z, y - 1] == null)
{
for (var i = 0; i < match.botFaces.Length; i++)
{
match.botFaces[i] = NeededFace.Any;
}
}
else
{
var lowerBlock = _level[x, z, y - 1];
for (var i = 0; i < 4; i++)
{
match.botFaces[i] = lowerBlock.topFaces[i].nextNeededFace;
}
}
// same but on each side :
// right
if (x + 1 >= width)
{
match.sideFaces[6] = NeededFace.Close;
match.sideFaces[7] = NeededFace.Close;
}
else if (_level[x + 1, z, y] == null)
{
match.sideFaces[6] = NeededFace.Any;
match.sideFaces[7] = NeededFace.Any;
}
else
{
var sideBlock = _level[x + 1, z, y];
match.sideFaces[6] = sideBlock.sideFaces[3].nextNeededFace;
match.sideFaces[7] = sideBlock.sideFaces[2].nextNeededFace;
}
// left
if (x - 1 < 0)
{
match.sideFaces[2] = NeededFace.Close;
match.sideFaces[3] = NeededFace.Close;
}
else if (_level[x - 1, z, y] == null)
{
match.sideFaces[2] = NeededFace.Any;
match.sideFaces[3] = NeededFace.Any;
}
else
{
var sideBlock = _level[x - 1, z, y];
match.sideFaces[2] = sideBlock.sideFaces[7].nextNeededFace;
match.sideFaces[3] = sideBlock.sideFaces[6].nextNeededFace;
}
// front
if (z + 1 >= lenght)
{
match.sideFaces[0] = NeededFace.Close;
match.sideFaces[1] = NeededFace.Close;
}
else if (_level[x, z + 1, y] == null)
{
match.sideFaces[0] = NeededFace.Any;
match.sideFaces[1] = NeededFace.Any;
}
else
{
var sideBlock = _level[x, z + 1, y];
match.sideFaces[0] = sideBlock.sideFaces[5].nextNeededFace;
match.sideFaces[1] = sideBlock.sideFaces[4].nextNeededFace;
}
// back
if (z - 1 < 0)
{
match.sideFaces[4] = NeededFace.Close;
match.sideFaces[5] = NeededFace.Close;
}
else if (_level[x, z - 1, y] == null)
{
match.sideFaces[4] = NeededFace.Any;
match.sideFaces[5] = NeededFace.Any;
}
else
{
var sideBlock = _level[x, z - 1, y];
match.sideFaces[4] = sideBlock.sideFaces[1].nextNeededFace;
match.sideFaces[5] = sideBlock.sideFaces[0].nextNeededFace;
}
return(match);
}