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Separate top layer search from block data retrieval

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This commit is contained in:
Matthias Schiffer 2020-06-19 23:14:25 +02:00
parent 569d0f1198
commit 072d664199
Signed by: neocturne
GPG key ID: 16EF3F64CB201D9C
4 changed files with 64 additions and 38 deletions
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53
src/World/Chunk.cpp
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@ -81,41 +81,62 @@ uint8_t Chunk::getBiome(size_t x, size_t y, size_t z) const {
return 0;
}
bool Chunk::getBlock(Block *block, const Section *section, size_t x, size_t y, size_t z, uint8_t prev_light) const {
if (block->height > 0)
Block Chunk::getBlock(size_t x, Chunk::Height height, size_t z) const {
Block block = {};
block.depth = height.depth;
block.biome = getBiome(x, height.y, z);
size_t Y = height.y / SIZE;
size_t y = height.y % SIZE;
if (Y < sections.size() && sections[Y])
block.type = sections[Y]->getBlockStateAt(x, y, z);
size_t Yt = (height.y + 1) / SIZE;
size_t yt = (height.y + 1) % SIZE;
if (Yt < sections.size() && sections[Yt])
block.blockLight = sections[Yt]->getBlockLightAt(x, yt, z);
return block;
}
bool Chunk::getHeight(Chunk::Height *height, const Section *section, size_t x, size_t y, size_t z, bool withDepth) const {
if (height->depth > 0)
return false;
if (!withDepth && height->y > 0)
return false;
const Resource::BlockType *type = section->getBlockStateAt(x, y, z);
if (!type || !(type->flags & BLOCK_OPAQUE))
return false;
if (!block->type) {
block->type = type;
block->blockLight = prev_light;
block->biome = getBiome(x, y, z);
}
if (height->y == 0)
height->y = SIZE*section->getY() + y;
if (!withDepth)
return true;
if (type->flags & BLOCK_WATER)
return false;
block->height = SIZE*section->getY() + y;
height->depth = SIZE*section->getY() + y;
return true;
}
Chunk::Blocks Chunk::getTopLayer() const {
Chunk::Heightmap Chunk::getTopLayer(bool withDepth) const {
size_t done = 0;
Blocks ret = {};
uint8_t prev_light[SIZE][SIZE] = {};
Heightmap ret = {};
for (ssize_t Y = sections.size() - 1; Y >= 0; Y--) {
if (done == SIZE*SIZE)
break;
if (!sections[Y]) {
std::memset(prev_light, 0, sizeof(prev_light));
if (!sections[Y])
continue;
}
const Section *section = sections[Y].get();
@ -125,10 +146,8 @@ Chunk::Blocks Chunk::getTopLayer() const {
for (size_t z = 0; z < SIZE; z++) {
for (size_t x = 0; x < SIZE; x++) {
if (getBlock(&ret.blocks[x][z], section, x, y, z, prev_light[x][z]))
if (getHeight(&ret.v[x][z], section, x, y, z, withDepth))
done++;
prev_light[x][z] = section->getBlockLightAt(x, y, z);
}
}
}