131 lines
3.6 KiB
C++
131 lines
3.6 KiB
C++
#include "ChunksController.hpp"
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#include <limits.h>
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#include <iostream>
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#include <memory>
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#include <content/Content.hpp>
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#include <files/WorldFiles.hpp>
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#include <graphics/core/Mesh.hpp>
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#include "../lighting/Lighting.hpp"
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#include "../maths/voxmaths.hpp"
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#include <util/timeutil.hpp>
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#include <voxels/Block.hpp>
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#include <voxels/Chunk.hpp>
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#include <voxels/Chunks.hpp>
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#include <voxels/ChunksStorage.hpp>
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#include <voxels/WorldGenerator.hpp>
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#include "../world/Level.hpp"
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#include "../world/World.hpp"
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#include "../world/WorldGenerators.hpp"
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const uint MAX_WORK_PER_FRAME = 128;
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const uint MIN_SURROUNDING = 9;
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ChunksController::ChunksController(Level* level, uint padding)
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: level(level),
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chunks(level->chunks.get()),
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lighting(level->lighting.get()),
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padding(padding),
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generator(WorldGenerators::createGenerator(
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level->getWorld()->getGenerator(), level->content
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)) {
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}
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ChunksController::~ChunksController() = default;
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void ChunksController::update(int64_t maxDuration) {
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int64_t mcstotal = 0;
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for (uint i = 0; i < MAX_WORK_PER_FRAME; i++) {
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timeutil::Timer timer;
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if (loadVisible()) {
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int64_t mcs = timer.stop();
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if (mcstotal + mcs < maxDuration * 1000) {
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mcstotal += mcs;
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continue;
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}
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}
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break;
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}
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}
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bool ChunksController::loadVisible() {
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const int w = chunks->w;
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const int d = chunks->d;
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int nearX = 0;
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int nearZ = 0;
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int minDistance = ((w - padding * 2) / 2) * ((w - padding * 2) / 2);
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for (uint z = padding; z < d - padding; z++) {
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for (uint x = padding; x < w - padding; x++) {
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int index = z * w + x;
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auto& chunk = chunks->chunks[index];
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if (chunk != nullptr) {
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if (chunk->flags.loaded && !chunk->flags.lighted) {
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if (buildLights(chunk)) {
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return true;
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}
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}
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continue;
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}
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int lx = x - w / 2;
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int lz = z - d / 2;
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int distance = (lx * lx + lz * lz);
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if (distance < minDistance) {
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minDistance = distance;
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nearX = x;
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nearZ = z;
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}
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}
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}
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const auto& chunk = chunks->chunks[nearZ * w + nearX];
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if (chunk != nullptr) {
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return false;
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}
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const int ox = chunks->ox;
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const int oz = chunks->oz;
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createChunk(nearX + ox, nearZ + oz);
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return true;
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}
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bool ChunksController::buildLights(const std::shared_ptr<Chunk>& chunk) {
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int surrounding = 0;
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for (int oz = -1; oz <= 1; oz++) {
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for (int ox = -1; ox <= 1; ox++) {
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if (chunks->getChunk(chunk->x + ox, chunk->z + oz)) surrounding++;
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}
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}
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if (surrounding == MIN_SURROUNDING) {
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bool lightsCache = chunk->flags.loadedLights;
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if (!lightsCache) {
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lighting->buildSkyLight(chunk->x, chunk->z);
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}
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lighting->onChunkLoaded(chunk->x, chunk->z, !lightsCache);
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chunk->flags.lighted = true;
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return true;
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}
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return false;
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}
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void ChunksController::createChunk(int x, int z) {
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auto chunk = level->chunksStorage->create(x, z);
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chunks->putChunk(chunk);
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auto& chunkFlags = chunk->flags;
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if (!chunkFlags.loaded) {
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generator->generate(chunk->voxels, x, z, level->getWorld()->getSeed());
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chunkFlags.unsaved = true;
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}
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chunk->updateHeights();
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if (!chunkFlags.loadedLights) {
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Lighting::prebuildSkyLight(chunk.get(), level->content->getIndices());
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}
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chunkFlags.loaded = true;
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chunkFlags.ready = true;
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}
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