98 lines
3 KiB
C++
98 lines
3 KiB
C++
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#include "world.hpp"
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namespace app {
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World::World(xe::GameObject& viewer, int renderDistance, int worldSeed)
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: viewer{viewer},
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renderDistance{renderDistance},
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worldSeed{worldSeed},
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chunkRenderer{Chunk::getTextures()} {
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reloadChunks(renderDistance);
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}
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World::~World() {}
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void World::reloadChunks() {
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int currentViewX = static_cast<int>(floor(viewer.transform.translation.x / Chunk::CHUNK_SIZE.x));
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int currentViewZ = static_cast<int>(floor(viewer.transform.translation.z / Chunk::CHUNK_SIZE.z));
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if(currentViewX != viewX || currentViewZ != viewZ) {
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viewX = currentViewX;
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viewZ = currentViewZ;
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unloadOldChunks();
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loadNewChunks();
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}
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updateChunkMeshs();
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}
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void World::reloadChunks(int newRenderDistance) {
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renderDistance = newRenderDistance;
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viewX = static_cast<int>(floor(viewer.transform.translation.x / Chunk::CHUNK_SIZE.x));
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viewZ = static_cast<int>(floor(viewer.transform.translation.z / Chunk::CHUNK_SIZE.z));
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resetChunks();
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loadNewChunks();
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updateChunkMeshs();
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}
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void World::resetChunks() {
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unloadOldChunks();
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loadedChunks.clear();
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int width = 2*renderDistance+1;
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for(int i = 0; i < width*width; i++) {
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auto gameObject = xe::GameObject::createGameObject();
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loadedChunks.push_back(std::move(gameObject));
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}
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}
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void World::unloadOldChunks() {
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int minX = viewX - renderDistance;
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int minZ = viewZ - renderDistance;
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int maxX = viewX + renderDistance;
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int maxZ = viewZ + renderDistance;
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for(auto &object : loadedChunks) {
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int gridX = static_cast<int>(floor(object.transform.translation.x / Chunk::CHUNK_SIZE.x));
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int gridZ = static_cast<int>(floor(object.transform.translation.z / Chunk::CHUNK_SIZE.z));
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if(gridX < minX || gridZ < minZ || gridX > maxX || gridZ > maxZ){
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Chunk::deleteChunk(gridX, gridZ);
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object.model = nullptr;
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}
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}
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}
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void World::loadNewChunks() {
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int width = 2*renderDistance+1;
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int minX = viewX - renderDistance;
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int minZ = viewZ - renderDistance;
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int maxX = viewX + renderDistance;
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int maxZ = viewZ + renderDistance;
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int i = 0;
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for(auto &object : loadedChunks) {
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int gridX = minX + i % width;
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int gridZ = minZ + i / width;
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Chunk* chunk = Chunk::getChunk(gridX, gridZ);
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if(chunk == nullptr) {
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chunk = Chunk::newChunk(gridX, gridZ, worldSeed);
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Chunk::generateAsync(chunk);
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}
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object.transform.translation = glm::vec3(gridX * Chunk::CHUNK_SIZE.x, 0, gridZ * Chunk::CHUNK_SIZE.z);
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i++;
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}
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}
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void World::updateChunkMeshs() {
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for(auto &object : loadedChunks) {
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int gridX = static_cast<int>(floor(object.transform.translation.x / Chunk::CHUNK_SIZE.x));
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int gridZ = static_cast<int>(floor(object.transform.translation.z / Chunk::CHUNK_SIZE.z));
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Chunk* chunk = Chunk::getChunk(gridX, gridZ);
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if(chunk == nullptr) continue;
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if(chunk->getMesh() == nullptr)
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Chunk::createMeshAsync(chunk);
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object.model = chunk->getMesh();
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}
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}
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void World::render(xe::Camera& camera) {
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camera.setViewYXZ(viewer.transform.translation, viewer.transform.rotation);
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chunkRenderer.render(loadedChunks, camera);
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}
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}
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