OpenFusion/src/ChunkManager.cpp

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#include "ChunkManager.hpp"
#include "PlayerManager.hpp"
#include "NPCManager.hpp"
#include "settings.hpp"
std::map<std::pair<int, int>, Chunk*> ChunkManager::chunks;
void ChunkManager::init() {} // stubbed
void ChunkManager::cleanup() {
// cleans up all the allocated chunks
for (auto& pair : chunks) {
delete pair.second;
}
}
void ChunkManager::addNPC(int posX, int posY, int32_t id) {
std::pair<int, int> pos = grabChunk(posX, posY);
// make chunk if it doesn't exist!
if (chunks.find(pos) == chunks.end()) {
chunks[pos] = new Chunk();
chunks[pos]->players = std::set<CNSocket*>();
chunks[pos]->NPCs = std::set<int32_t>();
}
Chunk* chunk = chunks[pos];
chunk->NPCs.insert(id);
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NPCManager::addNPC(grabChunks(pos), id);
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}
void ChunkManager::addPlayer(int posX, int posY, CNSocket* sock) {
std::pair<int, int> pos = grabChunk(posX, posY);
// make chunk if it doesn't exist!
if (chunks.find(pos) == chunks.end()) {
chunks[pos] = new Chunk();
chunks[pos]->players = std::set<CNSocket*>();
chunks[pos]->NPCs = std::set<int32_t>();
}
Chunk* chunk = chunks[pos];
chunk->players.insert(sock);
}
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void ChunkManager::removePlayer(std::pair<int, int> chunkPos, CNSocket* sock) {
if (!checkChunk(chunkPos))
return; // do nothing if chunk doesn't even exist
Chunk* chunk = chunks[chunkPos];
chunk->players.erase(sock); // gone
// TODO: if players and NPCs are empty, free chunk and remove it from surrounding views
}
bool ChunkManager::checkChunk(std::pair<int, int> chunk) {
return chunks.find(chunk) != chunks.end();
}
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std::pair<int, int> ChunkManager::grabChunk(int posX, int posY) {
return std::make_pair<int, int>(posX / (settings::CHUNKSIZE / 3), posY / (settings::CHUNKSIZE / 3));
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}
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std::vector<Chunk*> ChunkManager::grabChunks(std::pair<int, int> chunk) {
std::vector<Chunk*> chnks;
chnks.reserve(9);
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// grabs surrounding chunks if they exist
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for (int i = -1; i < 2; i++) {
for (int z = -1; z < 2; z++) {
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std::pair<int, int> pos(chunk.first+i, chunk.second+z);
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// if chunk exists, add it to the vector
if (checkChunk(pos))
chnks.push_back(chunks[pos]);
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}
}
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return chnks;
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}
// returns the chunks that aren't shared (only from from)
std::vector<Chunk*> ChunkManager::getDeltaChunks(std::vector<Chunk*> from, std::vector<Chunk*> to) {
std::vector<Chunk*> delta;
for (Chunk* i : from) {
bool found = false;
// search for it in the other array
for (Chunk* z : to) {
if (i == z) {
found = true;
break;
}
}
// add it to the vector if we didn't find it!
if (!found)
delta.push_back(i);
}
return delta;
}