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Preparations for negative Y support

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This commit is contained in:
Dylan K. Taylor
2021-11-08 17:28:22 +00:00
parent df39a1ca07
commit c6c992a1f0
8 changed files with 31 additions and 25 deletions
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24
src/world/format/Chunk.php
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@ -35,7 +35,9 @@ class Chunk{
public const DIRTY_FLAG_BLOCKS = 1 << 0;
public const DIRTY_FLAG_BIOMES = 1 << 3;
public const MAX_SUBCHUNKS = 16;
public const MIN_SUBCHUNK_INDEX = 0;
public const MAX_SUBCHUNK_INDEX = 15;
public const MAX_SUBCHUNKS = self::MAX_SUBCHUNK_INDEX - self::MIN_SUBCHUNK_INDEX + 1;
public const EDGE_LENGTH = SubChunk::EDGE_LENGTH;
public const COORD_BIT_SIZE = SubChunk::COORD_BIT_SIZE;
@ -71,10 +73,10 @@ class Chunk{
$this->subChunks = new \SplFixedArray(Chunk::MAX_SUBCHUNKS);
foreach($this->subChunks as $y => $null){
$this->subChunks[$y] = $subChunks[$y] ?? new SubChunk(BlockLegacyIds::AIR << Block::INTERNAL_METADATA_BITS, []);
$this->subChunks[$y] = $subChunks[$y + self::MIN_SUBCHUNK_INDEX] ?? new SubChunk(BlockLegacyIds::AIR << Block::INTERNAL_METADATA_BITS, []);
}
$val = ($this->subChunks->getSize() * SubChunk::EDGE_LENGTH);
$val = (self::MAX_SUBCHUNK_INDEX + 1) * SubChunk::EDGE_LENGTH;
$this->heightMap = HeightArray::fill($val); //TODO: what about lazily initializing this?
$this->biomeIds = $biomeIds;
@ -118,7 +120,7 @@ class Chunk{
* @return int|null 0-255, or null if there are no blocks in the column
*/
public function getHighestBlockAt(int $x, int $z) : ?int{
for($y = $this->subChunks->count() - 1; $y >= 0; --$y){
for($y = self::MAX_SUBCHUNK_INDEX; $y >= self::MIN_SUBCHUNK_INDEX; --$y){
$height = $this->getSubChunk($y)->getHighestBlockAt($x, $z);
if($height !== null){
return $height | ($y << SubChunk::COORD_BIT_SIZE);
@ -280,21 +282,21 @@ class Chunk{
}
public function getSubChunk(int $y) : SubChunk{
if($y < 0 || $y >= $this->subChunks->getSize()){
if($y < self::MIN_SUBCHUNK_INDEX || $y > self::MAX_SUBCHUNK_INDEX){
throw new \InvalidArgumentException("Invalid subchunk Y coordinate $y");
}
return $this->subChunks[$y];
return $this->subChunks[$y - self::MIN_SUBCHUNK_INDEX];
}
/**
* Sets a subchunk in the chunk index
*/
public function setSubChunk(int $y, ?SubChunk $subChunk) : void{
if($y < 0 or $y >= $this->subChunks->getSize()){
if($y < self::MIN_SUBCHUNK_INDEX or $y > self::MAX_SUBCHUNK_INDEX){
throw new \InvalidArgumentException("Invalid subchunk Y coordinate $y");
}
$this->subChunks[$y] = $subChunk ?? new SubChunk(BlockLegacyIds::AIR << Block::INTERNAL_METADATA_BITS, []);
$this->subChunks[$y - self::MIN_SUBCHUNK_INDEX] = $subChunk ?? new SubChunk(BlockLegacyIds::AIR << Block::INTERNAL_METADATA_BITS, []);
$this->setTerrainDirtyFlag(self::DIRTY_FLAG_BLOCKS, true);
}
@ -303,7 +305,11 @@ class Chunk{
* @phpstan-return array<int, SubChunk>
*/
public function getSubChunks() : array{
return $this->subChunks->toArray();
$result = [];
foreach($this->subChunks as $yOffset => $subChunk){
$result[$yOffset + self::MIN_SUBCHUNK_INDEX] = $subChunk;
}
return $result;
}
/**