Dram27/minecraft-pe-0.6.1
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minecraft-pe-0.6.1/src/world/level/chunk/ChunkCache.h
Shredder 9cd91b1508 should finally work hopefully...
2026-05-05 01:05:57 +05:00

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#ifndef NET_MINECRAFT_WORLD_LEVEL_CHUNK__ChunkCache_H__
#define NET_MINECRAFT_WORLD_LEVEL_CHUNK__ChunkCache_H__
//package net.minecraft.world.level.chunk;
#include "ChunkSource.h"
#include "storage/ChunkStorage.h"
#include "EmptyLevelChunk.h"
#include "../Level.h"
#include "../LevelConstants.h"
class ChunkCache: public ChunkSource {
//static const int CHUNK_CACHE_WIDTH = CHUNK_CACHE_WIDTH; // WAS 32;
static const int MAX_SAVES = 2;
public:
ChunkCache(Level* level_, ChunkStorage* storage_, ChunkSource* source_)
: xLast(-999999999),
zLast(-999999999),
last(NULL),
level(level_),
storage(storage_),
source(source_)
{
isChunkCache = true;
//emptyChunk = new EmptyLevelChunk(level_, emptyChunkBlocks, 0, 0);
emptyChunk = new EmptyLevelChunk(level_, NULL, 0, 0);
memset(chunks, 0, sizeof(LevelChunk*) * CHUNK_CACHE_WIDTH * CHUNK_CACHE_WIDTH);
}
~ChunkCache() {
delete source;
delete emptyChunk;
for (int i = 0; i < CHUNK_CACHE_WIDTH * CHUNK_CACHE_WIDTH; i++)
{
if (chunks[i])
{
chunks[i]->deleteBlockData();
delete chunks[i];
}
}
}
bool fits(int x, int z) {
return (x >= 0 && z >= 0 && x < CHUNK_CACHE_WIDTH && z < CHUNK_CACHE_WIDTH);
}
bool hasChunk(int x, int z) {
// with a fixed world size, chunks outside the fitting area are always available (emptyChunks)
if (!fits(x, z)) return true;
if (x == xLast && z == zLast && last != NULL) {
return true;
}
int xs = x & (CHUNK_CACHE_WIDTH - 1);
int zs = z & (CHUNK_CACHE_WIDTH - 1);
int slot = xs + zs * CHUNK_CACHE_WIDTH;
return chunks[slot] != NULL && (chunks[slot] == emptyChunk || chunks[slot]->isAt(x, z));
}
LevelChunk* create(int x, int z) {
return getChunk(x, z);
}
LevelChunk* getChunk(int x, int z) {
//static Stopwatch sw;
//sw.start();
if (x == xLast && z == zLast && last != NULL) {
return last;
}
if (!fits(x, z)) return emptyChunk;
//if (!level->isFindingSpawn && !fits(x, z)) return emptyChunk;
int xs = x & (CHUNK_CACHE_WIDTH - 1);
int zs = z & (CHUNK_CACHE_WIDTH - 1);
int slot = xs + zs * CHUNK_CACHE_WIDTH;
if (!hasChunk(x, z)) {
if (chunks[slot] != NULL) {
chunks[slot]->unload();
save(chunks[slot]);
saveEntities(chunks[slot]);
}
LevelChunk* newChunk = load(x, z);
bool updateLights = false;
if (newChunk == NULL) {
if (source == NULL) {
newChunk = emptyChunk;
} else {
newChunk = source->getChunk(x, z);
}
} else {
//return emptyChunk;
updateLights = true;
}
chunks[slot] = newChunk;
newChunk->lightLava();
if (updateLights)
{
for (int cx = 0; cx < 16; cx++)
{
for (int cz = 0; cz < 16; cz++)
{
int height = level->getHeightmap(cx + x * 16, cz + z * 16);
for (int cy = height; cy >= 0; cy--)
{
level->updateLight(LightLayer::Sky, cx + x * 16, cy, cz + z * 16, cx + x * 16, cy, cz + z * 16);
level->updateLight(LightLayer::Block, cx + x * 16 - 1, cy, cz + z * 16 - 1, cx + x * 16 + 1, cy, cz + z * 16 + 1);
}
}
}
//level->updateLight(LightLayer::Sky, x * 16, 0, z * 16, x * 16 + 15, 128, z * 16 + 15);
//level->updateLight(LightLayer::Block, x * 16, 0, z * 16, x * 16 + 15, 128, z * 16 + 15);
}
if (chunks[slot] != NULL) {
chunks[slot]->load();
}
if (!chunks[slot]->terrainPopulated && hasChunk(x + 1, z + 1) && hasChunk(x, z + 1) && hasChunk(x + 1, z)) postProcess(this, x, z);
if (hasChunk(x - 1, z) && !getChunk(x - 1, z)->terrainPopulated && hasChunk(x - 1, z + 1) && hasChunk(x, z + 1) && hasChunk(x - 1, z)) postProcess(this, x - 1, z);
if (hasChunk(x, z - 1) && !getChunk(x, z - 1)->terrainPopulated && hasChunk(x + 1, z - 1) && hasChunk(x, z - 1) && hasChunk(x + 1, z)) postProcess(this, x, z - 1);
if (hasChunk(x - 1, z - 1) && !getChunk(x - 1, z - 1)->terrainPopulated && hasChunk(x - 1, z - 1) && hasChunk(x, z - 1) && hasChunk(x - 1, z)) postProcess(this, x - 1, z - 1);
}
xLast = x;
zLast = z;
last = chunks[slot];
//sw.stop();
//sw.printEvery(500000, "ChunkCache::load: ");
return chunks[slot];
}
Biome::MobList getMobsAt(const MobCategory& mobCategory, int x, int y, int z) {
return source->getMobsAt(mobCategory, x, y, z);
}
void postProcess(ChunkSource* parent, int x, int z) {
if (!fits(x, z)) return;
LevelChunk* chunk = getChunk(x, z);
if (!chunk->terrainPopulated) {
chunk->terrainPopulated = true;
if (source != NULL) {
source->postProcess(parent, x, z);
chunk->clearUpdateMap();
}
}
}
//bool save(bool force, ProgressListener progressListener) {
// int saves = 0;
// int count = 0;
// if (progressListener != NULL) {
// for (int i = 0; i < chunks.length; i++) {
// if (chunks[i] != NULL && chunks[i].shouldSave(force)) {
// count++;
// }
// }
// }
// int cc = 0;
// for (int i = 0; i < chunks.length; i++) {
// if (chunks[i] != NULL) {
// if (force && !chunks[i].dontSave) saveEntities(chunks[i]);
// if (chunks[i].shouldSave(force)) {
// save(chunks[i]);
// chunks[i].unsaved = false;
// if (++saves == MAX_SAVES && !force) return false;
// if (progressListener != NULL) {
// if (++cc % 10 == 0) {
// progressListener.progressStagePercentage(cc * 100 / count);
// }
// }
// }
// }
// }
// if (force) {
// if (storage == NULL) return true;
// storage.flush();
// }
// return true;
//}
bool tick() {
if (storage != NULL) storage->tick();
return source->tick();
}
bool shouldSave() {
return true;
}
std::string gatherStats() {
// return "ChunkCache: 1024";
std::stringstream ss;
ss << "ChunkCache: " << CHUNK_CACHE_WIDTH * CHUNK_CACHE_WIDTH;
return ss.str();
}
void saveAll(bool onlyUnsaved) {
if (storage != NULL) {
std::vector<LevelChunk*> chunks;
for (int z = 0; z < CHUNK_CACHE_WIDTH; ++z)
for (int x = 0; x < CHUNK_CACHE_WIDTH; ++x) {
LevelChunk* chunk = level->getChunk(x, z);
if (!onlyUnsaved || chunk->shouldSave(false))
chunks.push_back( chunk );
}
storage->saveAll(level, chunks);
}
}
private:
LevelChunk* load(int x, int z) {
if (storage == NULL) return emptyChunk;
if (x < 0 || x >= CHUNK_CACHE_WIDTH || z < 0 || z >= CHUNK_CACHE_WIDTH)
{
return emptyChunk;
}
//try {
LevelChunk* levelChunk = storage->load(level, x, z);
if (levelChunk != NULL) {
levelChunk->lastSaveTime = level->getTime();
}
return levelChunk;
//} catch (Exception e) {
// e.printStackTrace();
// return emptyChunk;
//}
}
void saveEntities(LevelChunk* levelChunk) {
if (storage == NULL) return;
//try {
storage->saveEntities(level, levelChunk);
//} catch (Error e) {
// e.printStackTrace();
//}
}
void save(LevelChunk* levelChunk) {
if (storage == NULL) return;
//try {
levelChunk->lastSaveTime = level->getTime();
storage->save(level, levelChunk);
//} catch (IOException e) {
// e.printStackTrace();
//}
}
public:
int xLast;
int zLast;
private:
//unsigned char emptyChunkBlocks[LevelChunk::ChunkBlockCount];
LevelChunk* emptyChunk;
ChunkSource* source;
ChunkStorage* storage;
LevelChunk* chunks[CHUNK_CACHE_WIDTH * CHUNK_CACHE_WIDTH];
Level* level;
LevelChunk* last;
};
#endif /*NET_MINECRAFT_WORLD_LEVEL_CHUNK__ChunkCache_H__*/
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