Make world rendering work.

src/client/ChunkRenderer.cpp

@@ -4,13 +4,13 @@
 
 namespace Artifact {
 
-void ChunkRenderer::render(glm::ivec3 pos, World::Chunk* chunk, WGPUCommandEncoder encoder, WGPUTextureView texture) {
+void ChunkRenderer::render(WGPUCommandEncoder encoder, WGPUTextureView texture) {
 	WGPURenderPassColorAttachment colorAttachment = {};
 	colorAttachment.view = texture;
 	colorAttachment.loadOp = WGPULoadOp_Clear;
 	colorAttachment.storeOp = WGPUStoreOp_Store;
-	colorAttachment.clearValue = {0, 0, 0, 1};
-	colorAttachment.depthSlice = -1;
+	colorAttachment.clearValue = {0.53, 0.81, 0.92, 1};
+	colorAttachment.depthSlice = WGPU_DEPTH_SLICE_UNDEFINED;
 
 	WGPURenderPassDepthStencilAttachment depthAttachment = {};
 	depthAttachment.view = engine->depthTexture->view;
@@ -20,6 +20,7 @@ void ChunkRenderer::render(glm::ivec3 pos, World::Chunk* chunk, WGPUCommandEncod
 	depthAttachment.depthReadOnly = false;
 	depthAttachment.stencilLoadOp = WGPULoadOp_Undefined;
 	depthAttachment.stencilStoreOp = WGPUStoreOp_Undefined;
+	depthAttachment.stencilReadOnly = true;
 
 	WGPURenderPassDescriptor renderPassDesc = {};
 	renderPassDesc.colorAttachmentCount = 1;
@@ -39,4 +40,131 @@ void ChunkRenderer::render(glm::ivec3 pos, World::Chunk* chunk, WGPUCommandEncod
 	wgpuRenderPassEncoderEnd(cubeRenderPass);
 }
 
+void ChunkRenderer::addChunk(glm::ivec3 pos, World::Chunk* chunk) {
+	generateChunkMesh(pos, chunk);
+}
+
+void ChunkRenderer::removeChunk(glm::ivec3 pos) {
+	auto buffers = chunkBuffers.at(pos);
+	wgpuBufferDestroy(buffers.vertices);
+	wgpuBufferDestroy(buffers.indices);
+	chunkBuffers.erase(pos);
+}
+
+void ChunkRenderer::generateChunkMesh(glm::ivec3 pos, World::Chunk* chunk) {
+	int vertexCount = 0;
+	int indexCount = 0;
+
+	constexpr int SX = World::Chunk::SIZE;
+	constexpr int SY = World::Chunk::SIZE;
+	constexpr int SZ = World::Chunk::SIZE;
+
+	// Temporary CPU-side vectors – we will write them only to compute size,
+	// then copy once at the end.
+	std::vector<Vertex>   verts;
+	std::vector<uint32_t> inds;
+
+	verts.reserve(24 * 1024); // rough upper bound
+	inds.reserve (36 * 1024);
+
+	// Helper to emit one quad (counter-clockwise when looking at the face)
+	auto emitQuad = [&verts, &inds](float x0, float y0, float z0,
+						float x1, float y1, float z1,
+						float x2, float y2, float z2,
+						float x3, float y3, float z3,
+						float u0, float v0, float u1, float v1) {
+		uint32_t base = static_cast<uint32_t>(verts.size());
+		verts.push_back({{x0,y0,z0}, {u0,v0}});
+		verts.push_back({{x1,y1,z1}, {u0,v1}});
+		verts.push_back({{x2,y2,z2}, {u1,v1}});
+		verts.push_back({{x3,y3,z3}, {u1,v0}});
+
+		inds.push_back(base + 0); inds.push_back(base + 1); inds.push_back(base + 2);
+		inds.push_back(base + 0); inds.push_back(base + 2); inds.push_back(base + 3);
+	};
+
+	for (int x = 0; x < SX; ++x) {
+		for (int y = 0; y < SY; ++y) {
+			for (int z = 0; z < SZ; ++z) {
+				uint16_t id = chunk->getNodeRaw(x, y, z);
+
+				float fx0 = static_cast<float>(x) + pos.x * 16;
+				float fy0 = static_cast<float>(y) + pos.y * 16;
+				float fz0 = static_cast<float>(z) + pos.z * 16;
+				float fx1 = fx0 + 1.0f;
+				float fy1 = fy0 + 1.0f;
+				float fz1 = fz0 + 1.0f;
+
+				auto def = engine->world->nodeRegistry.getDefinition(id);
+				World::NodeTextureCoords uv;
+				if(def.visual == World::NodeVisual::NONE) {
+					continue;
+				} else {
+					uv = engine->world->nodeRegistry.getTextureCoords(id);
+				}
+
+				// +X
+				if (chunk->getNodeRaw(x+1, y, z) == 0) {
+					emitQuad(fx1,fy0,fz0,  fx1,fy1,fz0,  fx1,fy1,fz1,  fx1,fy0,fz1,   uv.uvMin.x, uv.uvMin.y, uv.uvMax.x, uv.uvMax.y);
+				}
+				// -X
+				if (chunk->getNodeRaw(x-1, y, z) == 0) {
+					emitQuad(fx0,fy0,fz1,  fx0,fy1,fz1,  fx0,fy1,fz0,  fx0,fy0,fz0,   uv.uvMin.x, uv.uvMin.y, uv.uvMax.x, uv.uvMax.y);
+				}
+				// +Y (top)
+				if (chunk->getNodeRaw(x, y+1, z) == 0) {
+					emitQuad(fx0,fy1,fz0,  fx1,fy1,fz0,  fx1,fy1,fz1,  fx0,fy1,fz1,   uv.uvMin.x, uv.uvMin.y, uv.uvMax.x, uv.uvMax.y);
+				}
+				// -Y (bottom)
+				if (chunk->getNodeRaw(x, y-1, z) == 0) {
+					emitQuad(fx0,fy0,fz1,  fx1,fy0,fz1,  fx1,fy0,fz0,  fx0,fy0,fz0,   uv.uvMin.x, uv.uvMin.y, uv.uvMax.x, uv.uvMax.y);
+				}
+				// +Z
+				if (chunk->getNodeRaw(x, y, z+1) == 0) {
+					emitQuad(fx0,fy0,fz1,  fx0,fy1,fz1,  fx1,fy1,fz1,  fx1,fy0,fz1,   uv.uvMin.x, uv.uvMin.y, uv.uvMax.x, uv.uvMax.y);
+				}
+				// -Z
+				if (chunk->getNodeRaw(x, y, z-1) == 0) {
+					emitQuad(fx1,fy0,fz0,  fx1,fy1,fz0,  fx0,fy1,fz0,  fx0,fy0,fz0,   uv.uvMin.x, uv.uvMin.y, uv.uvMax.x, uv.uvMax.y);
+				}
+			}
+		}
+	}
+
+	if(chunkBuffers.count(pos)) {
+		removeChunk(pos);
+	}
+
+	auto isEmpty = inds.empty();
+	if (isEmpty) {
+		return;
+	}
+
+	vertexCount = verts.size();
+	indexCount = inds.size();
+
+	std::cout << "Vertices: " << vertexCount << "; Indices: " << indexCount << std::endl;
+
+	WGPUBufferDescriptor vertexBufferDesc = {};
+	vertexBufferDesc.size = vertexCount * sizeof(Vertex);
+	vertexBufferDesc.usage = WGPUBufferUsage_Vertex | WGPUBufferUsage_CopyDst;
+	vertexBufferDesc.label = WGPUStringView{"Chunk vertex buffer", WGPU_STRLEN};
+	auto vertices = wgpuDeviceCreateBuffer(engine->device, &vertexBufferDesc);
+	wgpuQueueWriteBuffer(engine->queue, vertices, 0, verts.data(), vertexBufferDesc.size);
+
+	WGPUBufferDescriptor indexBufferDesc = {};
+	indexBufferDesc.size = indexCount * sizeof(uint32_t);
+	indexBufferDesc.usage = WGPUBufferUsage_Index | WGPUBufferUsage_CopyDst;
+	indexBufferDesc.label = WGPUStringView{"Chunk index buffer", WGPU_STRLEN};
+	auto indices = wgpuDeviceCreateBuffer(engine->device, &indexBufferDesc);
+	wgpuQueueWriteBuffer(engine->queue, indices, 0, inds.data(), indexBufferDesc.size);
+
+	chunkBuffers.emplace(pos, ChunkRenderData {
+		.vertices = vertices,
+		.indices = indices,
+		.vertexCount = vertexCount,
+		.indexCount = indexCount
+	});
+}
+
 }

src/client/ChunkRenderer.h

@@ -5,25 +5,13 @@
 #include <Mesh.h>
 
 namespace Artifact {
-namespace World {
-
-class ClientChunk: public Chunk {
-	WGPUBuffer vertices;
-	WGPUBuffer indices;
-
-	void generateMesh() {
-
-	}
-};
-
-}
 
 class Engine;
 
 class ChunkRenderer {
 	struct ChunkRenderData {
-		WGPUBuffer vertices;
-		WGPUBuffer indices;
+		WGPUBuffer vertices = nullptr;
+		WGPUBuffer indices = nullptr;
 		int vertexCount;
 		int indexCount;
 	};
@@ -31,7 +19,10 @@ class ChunkRenderer {
 	std::unordered_map<glm::vec3, ChunkRenderData, Util::Vec3Hash, Util::Vec3Equal> chunkBuffers;
 public:
 	ChunkRenderer(Engine* engine) : engine(engine) {}
-	void render(glm::ivec3 pos, World::Chunk* chunk, WGPUCommandEncoder encoder, WGPUTextureView texture);
+	void render(WGPUCommandEncoder encoder, WGPUTextureView texture);
+	void addChunk(glm::ivec3 pos, World::Chunk* chunk);
+	void removeChunk(glm::ivec3 pos);
+	void generateChunkMesh(glm::ivec3 pos, World::Chunk* chunk);
 };
 
 }

src/client/Window.cpp

@@ -12,7 +12,7 @@ Window::Window() {
 	glfwSetWindowUserPointer(window, this);
 
 	glfwSetKeyCallback(window, [](GLFWwindow* window, int key, int scancode, int action, int mods){
-		auto me = reinterpret_cast<Window*>(glfwGetWindowUserPointer(window));
+		auto me = static_cast<Window*>(glfwGetWindowUserPointer(window));
 		me->dispatch(Events::Key{
 			.key = key,
 			.scancode = scancode,
@@ -22,7 +22,7 @@ Window::Window() {
 	});
 
 	glfwSetCursorPosCallback(window, [](GLFWwindow* window, double x, double y) {
-		auto me = reinterpret_cast<Window*>(glfwGetWindowUserPointer(window));
+		auto me = static_cast<Window*>(glfwGetWindowUserPointer(window));
 		me->dispatch(Events::CursorPos{
 			.x = x,
 			.y = y
@@ -30,7 +30,7 @@ Window::Window() {
 	});
 
 	glfwSetMouseButtonCallback(window, [](GLFWwindow* window, int button, int action, int mods) {
-		auto me = reinterpret_cast<Window*>(glfwGetWindowUserPointer(window));
+		auto me = static_cast<Window*>(glfwGetWindowUserPointer(window));
 		Events::ActionType type;
 		switch(button) {
 		case GLFW_MOUSE_BUTTON_LEFT:
@@ -55,6 +55,14 @@ Window::Window() {
 			.y = y
 		});
 	});
+
+	glfwSetScrollCallback(window, [](GLFWwindow* window, double dx, double dy) {
+		auto me = static_cast<Window*>(glfwGetWindowUserPointer(window));
+		me->dispatch(Events::Scroll{
+			.dx = dx,
+			.dy = dy
+		});
+	});
 }
 
 Window::~Window() {
@@ -73,4 +81,14 @@ void Window::close() const {
 	glfwSetWindowShouldClose(window, true);
 }
 
+void Window::setPointerLock() {
+	pointerLocked = true;
+	glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
+}
+
+void Window::releasePointerLock() {
+	pointerLocked = false;
+	glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
+}
+
 }

src/client/Window.h

@@ -34,20 +34,30 @@ struct Action {
 	double y;
 };
 
+struct Scroll {
+	double dx;
+	double dy;
+};
+
 }
 
-class Window: public EventTarget {
+class Window: public EventTarget {public:
 	GLFWwindow* window;
-public:
+
 	int width = 1200;
 	int height = 800;
+	bool pointerLocked = false;
+
 	Window();
 	~Window();
+
 	WGPUSurface createWGPUSurface(WGPUInstance &instance);
 	bool shouldClose();
 	void close() const;
 	// TODO: Allow changing the window cursor.
 	void setCursor();
+	void setPointerLock();
+	void releasePointerLock();
 };
 
 }

src/core/Engine.cpp

@@ -1,5 +1,6 @@
 #include <iostream>
 #include <memory>
+#include <chrono>
 
 #include <glfw3webgpu.h>
 #include <webgpu/webgpu.h>
@@ -50,7 +51,7 @@ Engine::~Engine() {
 
 /*/
 
-
+// Hack to ensure GLFW is initialized before the user does anything that might break it.
 static struct _glfwInit {
 	_glfwInit() {
 		if(!glfwInit()) printf("Failed to initialize GLFW.");
@@ -134,7 +135,7 @@ void Engine::init() {
 	depthDesc.size.width = viewportWidth;
 	depthDesc.size.height = viewportHeight;
 	depthDesc.size.depthOrArrayLayers = 1;
-	depthDesc.format = WGPUTextureFormat_Depth24Plus;
+	depthDesc.format = WGPUTextureFormat_Depth32Float;
 	depthDesc.usage = WGPUTextureUsage_RenderAttachment;
 	depthDesc.mipLevelCount = 1;
 	depthDesc.sampleCount = 1;
@@ -255,7 +256,15 @@ void Engine::init() {
 	});
 
 	window.listen<Events::CursorPos>([this](auto ev) {
+		static double lastX = viewportWidth / 2.0;
+		static double lastY = viewportHeight / 2.0;
 		nk_input_motion(ui.get(), ev.x, ev.y);
+
+		server->players[0]->yaw += (ev.x - lastX) * 0.2f;
+		server->players[0]->pitch -= (ev.y - lastY) * 0.2f;
+		server->players[0]->pitch = std::max(-89.0f, std::min(89.0f, (float)server->players[0]->pitch));
+		lastX = ev.x;
+		lastY = ev.y;
 	});
 
 	window.listen<Events::Action>([this](auto ev) {
@@ -274,6 +283,11 @@ void Engine::init() {
 			return;
 		}
 		nk_input_button(ui.get(), type, (int)ev.x, (int)ev.y, ev.state);
+		window.setPointerLock();
+	});
+
+	window.listen<Events::Scroll>([this](auto ev) {
+		nk_input_scroll(ui.get(), nk_vec2(ev.dx, ev.dy));
 	});
 
 	int atlasWidth, atlasHeight;
@@ -447,7 +461,7 @@ void Engine::makeWorldPipelines() {
 	cubeFragmentState.targets = &cubeColorTarget;
 
 	WGPUDepthStencilState depthStencilState = {};
-	depthStencilState.format = WGPUTextureFormat_Depth24Plus;
+	depthStencilState.format = WGPUTextureFormat_Depth32Float;
 	depthStencilState.depthWriteEnabled = WGPUOptionalBool_True;
 	depthStencilState.depthCompare = WGPUCompareFunction_Less;
 
@@ -629,20 +643,22 @@ void Engine::makeUIPipeline() {
 void Engine::run() {
 	init();
 
-	time_t last_time;
-	time(&last_time);
+	sendMessage(Events::PlayerJoin {
+		.name = "singleplayer",
+		.pos = {0, 0, 0}
+	});
 
+	auto lastTime = std::chrono::steady_clock::now().time_since_epoch().count();
 	while(!window.shouldClose()) {
 		nk_input_begin(ui.get());
 		glfwPollEvents();
 		nk_input_end(ui.get());
 		render();
-		time_t now;
-		time(&now);
-		if(now - last_time > STEP_SIZE) {
+		auto now = std::chrono::steady_clock::now().time_since_epoch().count();
+		if(now - lastTime > STEP_SIZE) {
 			tick();
-			dispatch(Events::Tick{now - last_time});
-			last_time = now;
+			dispatch(Events::Tick{now - lastTime});
+			lastTime = now;
 		}
 	}
 }
@@ -691,13 +707,11 @@ void Engine::render() {
 
 	WGPUCommandEncoder encoder = wgpuDeviceCreateCommandEncoder(device, nullptr);
 
-	for(const auto &pair : world->chunks) {
-		chunkRenderer->render(pair.first, pair.second.get(), encoder, nextTexture);
-	}
+	chunkRenderer->render(encoder, nextTexture);
 
 	WGPURenderPassColorAttachment colorAttachment = {};
 	colorAttachment.view = nextTexture;
-	colorAttachment.loadOp = WGPULoadOp_Clear;
+	colorAttachment.loadOp = WGPULoadOp_Load;
 	colorAttachment.storeOp = WGPUStoreOp_Store;
 	colorAttachment.clearValue = {0, 0.2, 0.4, 1};
 	colorAttachment.depthSlice = -1;
@@ -799,6 +813,45 @@ void Engine::render() {
 
 void Engine::tick() {
 	if(server) server->tick();
+	glm::vec3 direction;
+	direction.x = cos(glm::radians(server->players[0]->yaw)) * cos(glm::radians(server->players[0]->pitch));
+	direction.y = sin(glm::radians(server->players[0]->pitch));
+	direction.z = sin(glm::radians(server->players[0]->yaw)) * cos(glm::radians(server->players[0]->pitch));
+	direction = glm::normalize(direction);
+
+	glm::vec3 up = glm::vec3(0.0f, 1.0f, 0.0f);
+	glm::vec3 right = glm::normalize(glm::cross(direction, up));
+	glm::vec3 forward = glm::normalize(glm::vec3(direction.x, 0.0f, direction.z));
+
+	float speed = 0.1f;
+	glm::vec3 moveDir(0.0f);
+
+	if (glfwGetKey(window.window, GLFW_KEY_W) == GLFW_PRESS)
+		moveDir += forward * speed;
+	if (glfwGetKey(window.window, GLFW_KEY_S) == GLFW_PRESS)
+		moveDir -= forward * speed;
+	if (glfwGetKey(window.window, GLFW_KEY_A) == GLFW_PRESS)
+		moveDir -= right * speed;
+	if (glfwGetKey(window.window, GLFW_KEY_D) == GLFW_PRESS)
+		moveDir += right * speed;
+	if (glfwGetKey(window.window, GLFW_KEY_SPACE) == GLFW_PRESS)
+		moveDir += up * speed;
+	if (glfwGetKey(window.window, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS)
+		moveDir -= up * speed;
+
+	glm::vec3 newPos = server->players[0]->pos + moveDir;
+	server->players[0]->pos = newPos;
+	glm::vec3 cameraPos = newPos;
+	auto view = glm::lookAt(cameraPos, cameraPos + direction, glm::vec3(0, 1, 0));
+
+	glm::mat4 model = glm::mat4(1.0f);
+
+//	model = glm::translate(model, glm::vec3(nkx, nky, nkz));
+//	app->view = glm::rotate(app->view, (float)property / 10, newPos + glm::vec3(0, 1, 0));
+//	model = glm::rotate(model, (float)rot2 / 10, glm::vec3(1, 0, 0));
+//	model = glm::scale(model, glm::vec3(scale));
+	glm::mat4 mvp = glm::perspective(glm::radians(45.0f), (float)viewportWidth / viewportHeight, 0.1f, 100.0f) * view * model;
+	wgpuQueueWriteBuffer(queue, worldUniformBuffer, 0, &mvp, sizeof(mvp));
 }
 
 }

src/core/Engine.h

@@ -119,7 +119,7 @@ public:
 	std::string assetPath = std::string(getenv("HOME")) + "/eclipse-workspace/ArtifactEngine/assets";
 	glm::mat4 ortho;
 
-	Server* server;
+	Server* server = nullptr;
 
 	Engine();
 	~Engine();
@@ -150,8 +150,8 @@ public:
 			std::cout << "Message received" << std::endl;
 		} else if constexpr (std::is_same_v<T, Events::ChunkChanged>) {
 			auto ev = (Events::ChunkChanged) msg;
-			world->chunks.at(ev.pos)->data = ev.data;
-//			chunkRenderer->updateChunk(ev.pos, ev.data);
+			world->chunks.emplace(ev.pos, std::make_unique<World::Chunk>(ev.data));
+			chunkRenderer->addChunk(ev.pos, world->chunks.at(ev.pos).get());
 		}
 	}
 };
@@ -166,7 +166,7 @@ void Artifact::Engine::sendMessage(T msg){
 	if(server) {
 		server->receiveMessage(msg);
 	} else {
-		auto buffer = cista::serialize(msg);
+		//auto buffer = cista::serialize(msg);
 	}
 }
 

src/core/Events.h

@@ -7,15 +7,28 @@
 #include <any>
 #include <algorithm>
 
+#include <glm.hpp>
+
 namespace Artifact {
 
 namespace Events {
+// Common events.
+
 // Fired when the engine finishes initializing.
 struct Initialized {};
 // Fired every time the engine updates game logic.
 struct Tick {
 	time_t dtime;
 };
+
+// Server-only events.
+
+// Fired when a player joins the server.
+struct PlayerJoin {
+	std::string name;
+	glm::vec3 pos;
+};
+
 }
 
 class EventTarget {

src/main.cpp

@@ -42,8 +42,13 @@ int main() {
 	});
 
 	Artifact::World::NodeDef def_Stone;
-	def_Stone.texture = "test.png";
+	def_Stone.visual = Artifact::World::NodeVisual::CUBE;
+	def_Stone.texture = "rgt_stone_brick.png";
 	engine.world->nodeRegistry.registerNode("test", def_Stone);
+	def_Stone.texture = "rgt_stone.png";
+	engine.world->nodeRegistry.registerNode("test2", def_Stone);
+	def_Stone.texture = "rgt_grass_top.png";
+	engine.world->nodeRegistry.registerNode("test3", def_Stone);
 
 
 	engine.run();

src/server/Server.cpp

@@ -7,7 +7,7 @@
 namespace Artifact {
 
 Server::Server(Engine* localClient) : localClient(localClient) {
-
+	players.push_back(std::make_unique<ServerPlayer>());
 }
 
 void Server::run() {
@@ -60,7 +60,7 @@ void Server::start() {
 }
 
 void Server::tick() {
-
+	world->tick();
 }
 
 }

src/server/Server.h

@@ -5,6 +5,8 @@
 #include <cista.h>
 
 #include <Events.h>
+#include <ServerPlayer.h>
+#include <ServerWorld.h>
 
 #define STEP_SIZE 200
 
@@ -15,6 +17,9 @@ class Engine;
 class Server: public EventTarget {
 	Artifact::Engine* localClient;
 public:
+	std::vector<std::unique_ptr<ServerPlayer>> players;
+	std::unique_ptr<World::ServerWorld> world = std::make_unique<World::ServerWorld>(this);
+
 	Server(Engine* localClient);
 
 	void run();
@@ -27,6 +32,21 @@ public:
 	void receiveMessage(T msg) {
 		if constexpr (std::is_same_v<T, Events::Initialized>) {
 			std::cout << "Message received" << std::endl;
+		} else if constexpr (std::is_same_v<T, Events::PlayerJoin>) {
+			std::cout << "<" << msg.name << "> joined." << std::endl;
+			for(int x = -5, y = -5, z = -5; x <= 5 && y <= 5 && z <= 5;) {
+				auto chunk = world->loadChunk(msg.pos + glm::vec3{x, y, z});
+				sendMessage(Events::ChunkChanged{.pos = msg.pos + glm::vec3{x, y, z}, .data = chunk->data});
+				++x;
+				if(x > 5) {
+					x = -5;
+					++y;
+					if(y > 5) {
+						y = -5;
+						++z;
+					}
+				}
+			}
 		}
 	}
 };
@@ -40,6 +60,6 @@ void Artifact::Server::sendMessage(T msg) {
 	if(localClient) {
 		localClient->receiveMessage(msg);
 	} else {
-		auto buffer = cista::serialize(msg);
+		//auto buffer = cista::serialize(msg);
 	}
 }

src/server/ServerPlayer.cpp

@@ -0,0 +1,9 @@
+#include <ServerPlayer.h>
+
+namespace Artifact {
+
+ServerPlayer::ServerPlayer() {
+
+}
+
+}

src/server/ServerPlayer.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <glm.hpp>
+
+namespace Artifact {
+
+class ServerPlayer {
+public:
+	ServerPlayer();
+
+	glm::ivec3 lastChunkPos;
+	glm::vec3 pos;
+	double pitch;
+	double yaw;
+	int viewRange = 4;
+};
+
+}

src/server/ServerWorld.cpp

@@ -1,4 +1,6 @@
+#include <unordered_set>
 
+#include <Server.h>
 #include <ServerWorld.h>
 
 namespace Artifact {
@@ -8,36 +10,105 @@ ServerWorld::ServerWorld(Server* server) : server(server) {
 
 }
 
-void ServerWorld::tick() {
-
+glm::ivec3 getChunkPos(glm::vec3 p) {
+    return {static_cast<int>(std::floor(p.x / 16.0)), static_cast<int>(std::floor(p.y / 16.0)), static_cast<int>(std::floor(p.z / 16.0))};
 }
 
-void ServerWorld::updateLoadedChunks() {
+std::unordered_set<glm::ivec3, Util::Vec3Hash, Util::Vec3Equal> generateViewChunks(const glm::ivec3& center, int range) {
+    std::unordered_set<glm::ivec3, Util::Vec3Hash, Util::Vec3Equal> view;
+    for (int dx = -range; dx <= range; ++dx)
+	for (int dy = -range; dy <= range; ++dy)
+	for (int dz = -range; dz <= range; ++dz) {
+		if (std::max(std::abs(dx), std::abs(dz)) <= range) {
+			view.emplace(glm::ivec3{center.x + dx, center.y +dy, center.z + dz});
+		}
+	}
+    return view;
+}
 
+void ServerWorld::tick() {
+	std::vector<glm::ivec3> toLoad;
+	std::vector<glm::ivec3> toUnload;
+
+	 // First pass: Load or generate chunks and update meshes
+	for(const auto &player : server->players) {
+		auto currentPos = getChunkPos(player->pos);
+		if(currentPos == player->lastChunkPos) continue;
+
+		auto oldView = generateViewChunks(player->lastChunkPos, player->viewRange);
+		auto newView = generateViewChunks(currentPos, player->viewRange);
+
+		// Compute removed chunks (in old but not new).
+		std::unordered_set<glm::ivec3, Util::Vec3Hash, Util::Vec3Equal> removed;
+		for (const auto& c : oldView) {
+			if (newView.find(c) == newView.end()) {
+				removed.insert(c);
+			}
+		}
+
+		// Compute added chunks (in new but not old).
+		std::unordered_set<glm::ivec3, Util::Vec3Hash, Util::Vec3Equal> added;
+		for (const auto& c : newView) {
+			if (oldView.find(c) == oldView.end()) {
+				added.insert(c);
+			}
+		}
+
+		// Process removed first (order doesn't matter, but unload before load for safety).
+		for (const auto& c : removed) {
+			auto it = refcounts.find(c);
+			if (it != refcounts.end() && --(it->second) == 0) {
+				toUnload.push_back(c);
+				refcounts.erase(it);
+				chunks.erase(c);
+			}
+		}
+
+		// Process added.
+		for (const auto& c : added) {
+			int& ref = refcounts[c];  // Default constructs to 0 if missing.
+			if (ref == 0) {
+				toLoad.push_back(c);
+				loadChunk(c);
+				server->sendMessage(Events::ChunkChanged{.pos = c, .data = chunks.at(c)->data});
+			}
+			++ref;
+		}
+
+		player->lastChunkPos = currentPos;
+	}
 }
 
 Chunk* ServerWorld::loadChunk(glm::ivec3 pos) {
-	auto chunk = chunks.at(pos).get();
-	if(chunk) {
-		return chunk;
+	if(chunks.count(pos)) {
+		return chunks.at(pos).get();
 	}
 
 	// TODO: Load from disk
 
 	std::array<uint16_t, Chunk::SIZE_CUBED> data;
-	for(int x = 0; x < CHUNK_SIZE; ++x)
-	for(int z = 0; z < CHUNK_SIZE; ++z) {
+	data.fill(0);
+	if (pos.y > 0) {
+		data[1] = 2; // Stone
+		data[2] = 3; // Stone
+		data[3] = 4; // Stone
+	} else {
+//		chunk.voxels.assign(Chunk::SIZE * Chunk::SIZE * Chunk::SIZE, 0); // Reset voxels
+		for (int x = 0; x < Chunk::SIZE; ++x) {
+			for (int z = 0; z < Chunk::SIZE; ++z) {
 				int height = 8 + ((pos.x * 7 + pos.z * 13 + x * 3 + z * 5) % 8); // Heights 8 to 15
 				if (height < 0) height = 0;
 				if (height >= Chunk::SIZE) height = Chunk::SIZE - 1;
 				for (int y = 0; y <= 7; ++y) {
-			data[x + y * Chunk::SIZE + z * Chunk::SIZE * Chunk::SIZE] = std::rand() % 3 + 1; // Stone
+					data[x + y * Chunk::SIZE + z * Chunk::SIZE * Chunk::SIZE] = std::rand() % 3 + 2; // Stone
 				}
 				if (x > 3 && x < Chunk::SIZE - 3 && z > 3 && z < Chunk::SIZE - 3) {
-			data[x + 8 * Chunk::SIZE + z * Chunk::SIZE * Chunk::SIZE] = 2; // Grass on top
+					data[x + 8 * Chunk::SIZE + z * Chunk::SIZE * Chunk::SIZE] = 4; // Grass on top
 				}
 			}
-	chunks.at(pos) = std::make_unique<Chunk>(data);
+		}
+	}
+	chunks.emplace(pos, std::make_unique<Chunk>(data));
 	return chunks.at(pos).get();
 }
 

src/server/ServerWorld.h

@@ -1,18 +1,20 @@
 #pragma once
 
 #include <World.h>
-#include <Server.h>
 
 namespace Artifact {
+
+class Server;
+
 namespace World {
 
 class ServerWorld: public World {
 	Server* server = nullptr;
+	std::unordered_map<glm::vec3, int, Util::Vec3Hash, Util::Vec3Equal> refcounts;
 public:
 	ServerWorld(Server* server);
 
 	void tick();
-	void updateLoadedChunks();
 	Chunk* loadChunk(glm::ivec3 pos);
 };
 

src/world/Chunk.cpp

@@ -16,6 +16,9 @@ Chunk::~Chunk() {
 }
 
 uint16_t Chunk::getNodeRaw(float x, float y, float z) {
+	if(x < 0 || y < 0 || z < 0 || x >= Chunk::SIZE || y >= Chunk::SIZE || z >= Chunk::SIZE) {
+		return 0;
+	}
 	return data.at(posToIndex(x, y, z));
 }
 

src/world/World.cpp

@@ -12,7 +12,10 @@ int posToIndex(float x, float y, float z) {
 }
 
 NodeRegistry::NodeRegistry() {
-	registerNode("air", NodeDef{});
+	registerNode("air", NodeDef{.visual = NodeVisual::NONE});
+	registerNode("unknown", NodeDef{
+		.texture = "rgt_oak_log_top.png"
+	});
 }
 
 bool NodeRegistry::generateTextureAtlas(int& atlasWidth, int& atlasHeight, std::vector<unsigned char>& atlasData) {
@@ -27,8 +30,10 @@ bool NodeRegistry::generateTextureAtlas(int& atlasWidth, int& atlasHeight, std::
 	std::vector<std::vector<unsigned char>> textureData;
 	std::vector<int> widths, heights;
 	int maxWidth = 0, maxHeight = 0;
-	for (size_t i = 1; i < registeredNodes.size(); ++i) { // Skip ID 0 (air)
-		if(registeredNodes.at(i).visual == NodeVisual::NONE) continue;
+	for (size_t i = 0; i < registeredNodes.size(); ++i) { // Skip ID 0 (air)
+		if(registeredNodes.at(i).visual == NodeVisual::NONE) {
+			continue;
+		}
 		drawables.push_back(i);
 		int width, height, channels;
 		unsigned char* data = stbi_load(registeredNodes.at(i).texture.c_str(), &width, &height, &channels, 4);
@@ -37,8 +42,8 @@ bool NodeRegistry::generateTextureAtlas(int& atlasWidth, int& atlasHeight, std::
 			return false;
 		}
 		textureData.push_back({});
-		textureData.at(i).resize(width * height * 4);
-		std::memcpy(textureData[i].data(), data, width * height * 4);
+		textureData.at(drawables.size() - 1).resize(width * height * 4);
+		std::memcpy(textureData[drawables.size() - 1].data(), data, width * height * 4);
 		widths.push_back(width);
 		heights.push_back(height);
 		maxWidth = std::max(maxWidth, width);
@@ -48,12 +53,12 @@ bool NodeRegistry::generateTextureAtlas(int& atlasWidth, int& atlasHeight, std::
 
 	// Simple atlas layout: stack textures horizontally
 	// (You can improve this with a more efficient packing algorithm if needed)
-	atlasWidth = maxWidth * (drawables.size()) + 1; // -1 because ID 0 (air) has no texture
-	atlasHeight = maxHeight + 1;
+	atlasWidth = maxWidth * (drawables.size()); // -1 because ID 0 (air) has no texture
+	atlasHeight = maxHeight;
 	atlasData.resize(atlasWidth * atlasHeight * 4, 0); // RGBA
 
-	for (size_t i = 1; i < drawables.size(); ++i) {
-		int xOffset = (i - 1) * maxWidth;
+	for (uint16_t i = 0; i < drawables.size(); ++i) {
+		int xOffset = i * maxWidth;
 		for (int y = 0; y < heights[i]; ++y) {
 			for (int x = 0; x < widths[i]; ++x) {
 				int srcIdx = (y * widths[i] + x) * 4;
@@ -68,7 +73,7 @@ bool NodeRegistry::generateTextureAtlas(int& atlasWidth, int& atlasHeight, std::
 		float uMax = static_cast<float>(xOffset + widths[i]) / atlasWidth;
 		float vMin = 0.0f;
 		float vMax = static_cast<float>(heights[i]) / atlasHeight;
-		textureCoords.at(drawables.at(i)) = {{uMin, vMin}, {uMax, vMax}};
+		textureCoords.emplace(drawables.at(i), NodeTextureCoords{{uMin, vMin}, {uMax, vMax}});
 	}
 
 	return true;

src/world/World.h

@@ -28,7 +28,7 @@ struct NodeDef {
 	std::string name;
 	std::string texture;
 	AlphaBlendMode alphaBlendMode = AlphaBlendMode::NONE;
-	NodeVisual visual = NodeVisual::NONE;
+	NodeVisual visual = NodeVisual::CUBE;
 };
 
 struct NodeTextureCoords {
@@ -41,7 +41,7 @@ class NodeRegistry {
 	uint16_t next = 0;
 public:
 	std::unordered_map<uint16_t, NodeDef> registeredNodes;
-	std::vector<NodeTextureCoords> textureCoords;
+	std::unordered_map<uint16_t, NodeTextureCoords> textureCoords;
 
 	NodeRegistry();
 
@@ -51,6 +51,16 @@ public:
 		registeredNodes.emplace(next++, def);
 	}
 
+	const NodeDef& getDefinition(uint16_t id) {
+		if(!registeredNodes.count(id)) return registeredNodes.at(1);
+		return registeredNodes.at(id);
+	}
+
+	const NodeTextureCoords& getTextureCoords(uint16_t id) {
+		if(!textureCoords.count(id)) return textureCoords.at(1);
+		return textureCoords.at(id);
+	}
+
 	bool generateTextureAtlas(int& atlasWidth, int& atlasHeight, std::vector<unsigned char>& atlasData);
 };