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Reformat code 

Code now uses block_pos and chunk_pos instead of raw integers
main
Brett 2023-02-13 16:30:01 -05:00
parent 6c265b7c3c
commit a62bbdc654
25 changed files with 231 additions and 8429 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
CMakeLists.txt
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@ -48,7 +48,7 @@ if (USE_EXTRAS)
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@ -6,6 +6,8 @@ precision mediump float;
layout (location = 0) in vec3 vertex;
uniform mat4 translation;
layout (std140) uniform StandardMatrices
{
mat4 projection;
@ -15,7 +17,7 @@ layout (std140) uniform StandardMatrices
};
void main() {
gl_Position = projection * view * vec4(vertex.x, vertex.y, vertex.z, 1.0);
gl_Position = projection * view * translation * vec4(vertex.x, vertex.y, vertex.z, 1.0);
}
")";

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@ -10,26 +10,12 @@
#include <blt/std/math.h>
#include <vector>
#include "blt/std/logging.h"
#include <world/chunk/typedefs.h>
// contains storage classes for block IDs inside chunks plus eventual lookup of block states
// size of the chunk in number of blocks
constexpr int CHUNK_SIZE = 32;
const int CHUNK_SHIFT = (int)(log(CHUNK_SIZE) / log(2));
// size that the base vertex arrays are assumed to be (per face)
constexpr int VTX_ARR_SIZE = 18;
namespace fp {
enum face {
X_POS = 0,
X_NEG = 1,
Y_POS = 2,
Y_NEG = 3,
Z_POS = 4,
Z_NEG = 5,
};
class block_storage {
private:
char* blocks;
@ -44,33 +30,25 @@ namespace fp {
delete[] blocks;
}
inline char get(const blt::vec3& pos) { return get(pos.x(), pos.y(), pos.z()); }
inline char get(float x, float y, float z) { return get(int(x), int(y), int(z)); }
inline char get(int x, int y, int z) {
return blocks[z * CHUNK_SIZE * CHUNK_SIZE + y * CHUNK_SIZE + x];
[[nodiscard]] inline char get(const block_pos& pos) const {
return blocks[pos.z * CHUNK_SIZE * CHUNK_SIZE + pos.y * CHUNK_SIZE + pos.x];
}
inline void set(const blt::vec3& pos, char blockID) { return set(pos.x(), pos.y(), pos.z(), blockID); }
inline void set(float x, float y, float z, char blockID) { return set(int(x), int(y), int(z), blockID); }
inline void set(int x, int y, int z, char blockID) {
blocks[z * CHUNK_SIZE * CHUNK_SIZE + y * CHUNK_SIZE + x] = blockID;
inline void set(const block_pos& pos, char blockID) {
blocks[pos.z * CHUNK_SIZE * CHUNK_SIZE + pos.y * CHUNK_SIZE + pos.x] = blockID;
}
};
class mesh_storage {
private:
std::vector<float> vertices;
inline void add_and_translate(const float* array, float x, float y, float z) {
inline void add_and_translate(const float* array, const block_pos& pos) {
// since a chunk mesh contains all the faces for all the blocks inside the chunk
// we can add the translated values of predefined "unit" faces. This is for the simple "fast" chunk mesh generator.
for (int i = 0; i < VTX_ARR_SIZE; i+=3){
auto new_x = array[i] + x;
auto new_y = array[i + 1] + y;
auto new_z = array[i + 2] + z;
auto new_x = array[i] + (float)pos.x;
auto new_y = array[i + 1] + (float)pos.y;
auto new_z = array[i + 2] + (float)pos.z;
BLT_TRACE("Creating translated vertex {%f, %f, %f} from array position [%d, %d, %d]", new_x, new_y, new_z, i, i + 1, i + 2);
vertices.push_back(new_x);
vertices.push_back(new_y);
@ -78,10 +56,7 @@ namespace fp {
}
}
public:
void addFace(face face, float x, float y, float z);
inline void addFace(face face, int x, int y, int z) {
addFace(face, (float)x, (float)y, (float)z);
}
void addFace(face face, const block_pos& pos);
inline std::vector<float>& getVertices() {
return vertices;

70
include/world/chunk/typedefs.h Normal file
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@ -0,0 +1,70 @@
/*
* Created by Brett on 13/02/23.
* Licensed under GNU General Public License V3.0
* See LICENSE file for license detail
*/
#ifndef FINALPROJECT_CHUNK_TYPEDEFS_H
#define FINALPROJECT_CHUNK_TYPEDEFS_H
// size of the chunk in number of blocks
constexpr int CHUNK_SIZE = 32;
const int CHUNK_SHIFT = (int)(log(CHUNK_SIZE) / log(2));
// size that the base vertex arrays are assumed to be (per face)
constexpr int VTX_ARR_SIZE = 18;
namespace fp {
enum face {
X_POS = 0,
X_NEG = 1,
Y_POS = 2,
Y_NEG = 3,
Z_POS = 4,
Z_NEG = 5,
};
enum chunk_status {
// chunk is okay and needs no special action
OKAY = 0,
// chunk needs its VAO updated with the newest mesh
REFRESH = 1,
// chunk needs its edges re-meshed because it was created with null neighbours
PARTIAL_MESH = 2,
// chunk needs a complete re-mesh.
FULL_MESH = 3
};
struct chunk_pos {
int x, y, z;
};
struct block_pos {
int x, y, z;
block_pos(int x, int y, int z): x(x), y(y), z(z) {}
block_pos(float x, float y, float z): block_pos(int(x), int(y), int(z)) {}
};
namespace _static {
// std::unordered_map requires a type. As a result the functions are encapsulated.
struct chunk_pos_hash {
inline size_t operator()(const chunk_pos& pos) const {
size_t p1 = std::hash<int>()(pos.x);
size_t p2 = std::hash<int>()(pos.y);
size_t p3 = std::hash<int>()(pos.z);
return (p1 ^ (p2 << 1)) ^ p3;
}
};
struct chunk_pos_equality {
inline bool operator()(const chunk_pos& p1, const chunk_pos& p2) const {
return p1.x == p2.x && p1.y == p2.y && p1.z == p2.z;
}
};
}
}
#endif //FINALPROJECT_CHUNK_TYPEDEFS_H

68
include/world/chunk/world.h
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@ -13,10 +13,6 @@
namespace fp {
struct ChunkPos {
int x, y, z;
};
namespace _static {
/**
* Converts from world coord to chunk-internal coords
@ -28,6 +24,10 @@ namespace fp {
return val < 0 ? CHUNK_SIZE + val : val;
}
static inline block_pos world_to_internal(const block_pos& coord) {
return {world_to_internal(coord.x), world_to_internal(coord.y), world_to_internal(coord.z)};
}
/**
* Converts from world coord to chunk pos coords
*
@ -57,21 +57,9 @@ namespace fp {
return (int) (ucoord);
}
// std::unordered_map requires a type. As a result the functions are encapsulated.
struct ChunkPosHash {
inline size_t operator()(const ChunkPos& pos) const {
size_t p1 = std::hash<int>()(pos.x);
size_t p2 = std::hash<int>()(pos.y);
size_t p3 = std::hash<int>()(pos.z);
return (p1 ^ (p2 << 1)) ^ p3;
static inline chunk_pos world_to_chunk(const block_pos& pos){
return {world_to_chunk(pos.x), world_to_chunk(pos.y), world_to_chunk(pos.z)};
}
};
struct ChunkPosEquality {
inline bool operator()(const ChunkPos& p1, const ChunkPos& p2) const {
return p1.x == p2.x && p1.y == p2.y && p1.z == p2.z;
}
};
}
@ -80,12 +68,12 @@ namespace fp {
block_storage* storage;
mesh_storage* mesh = nullptr;
VAO* chunk_vao;
ChunkPos pos;
chunk_pos pos;
unsigned char dirtiness = 0;
chunk_status dirtiness = OKAY;
unsigned long render_size = 0;
public:
explicit chunk(ChunkPos pos): pos(pos) {
explicit chunk(chunk_pos pos): pos(pos) {
storage = new block_storage();
chunk_vao = new VAO();
// using indices uses:
@ -102,44 +90,46 @@ namespace fp {
~chunk() {
delete storage;
delete chunk_vao;
delete mesh;
}
};
class world {
private:
std::unordered_map<ChunkPos, chunk*, _static::ChunkPosHash, _static::ChunkPosEquality> chunk_storage;
std::unordered_map<chunk_pos, chunk*, _static::chunk_pos_hash, _static::chunk_pos_equality> chunk_storage;
protected:
mesh_storage* generateChunkMesh(chunk* chunk);
void generateChunkMesh(chunk* chunk);
chunk* getChunk(int x, int y, int z) {
return chunk_storage.at(ChunkPos{_static::world_to_chunk(x), _static::world_to_chunk(y), _static::world_to_chunk(z)});
inline void insertChunk(chunk* chunk){
chunk_storage.insert({chunk->pos, chunk});
}
inline chunk* getChunk(const block_pos& pos) {
return chunk_storage.at(_static::world_to_chunk(pos));
}
public:
world() {
chunk_storage.insert({{0, 0, 0}, new chunk({0, 0, 0})});
insertChunk(new chunk({0, 0, 0}));
insertChunk(new chunk({-1, 0, 0}));
insertChunk(new chunk({0, 0, -1}));
insertChunk(new chunk({-1, 0, -1}));
}
void update();
void render(fp::shader& shader);
inline void setBlock(int x, int y, int z, char blockID) {
auto c = getChunk(x, y, z);
inline void setBlock(const block_pos& pos, char blockID) {
auto c = getChunk(pos);
// mark the chunk for a mesh update
c->dirtiness = 2;
c->storage->set(_static::world_to_internal(x), _static::world_to_internal(y), _static::world_to_internal(z), blockID);
c->dirtiness = FULL_MESH;
c->storage->set(_static::world_to_internal(pos), blockID);
}
inline void setBlock(float x, float y, float z, char blockID) { setBlock((int) x, (int) y, (int) z, blockID); }
inline char getBlock(int x, int y, int z) {
auto c = getChunk(x, y, z);
return c->storage->get(x, y, z);
}
inline char getBlock(float x, float y, float z) {
return getBlock((int) x, (int) y, (int) z);
inline char getBlock(const block_pos& pos) {
auto c = getChunk(pos);
return c->storage->get(_static::world_to_internal(pos));
}
~world() {

14
src/main.cpp
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@ -20,16 +20,11 @@ fp::world* world;
void loop(){
glClearColor(1.0, 1.0, 1.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
world->update();
world->render(*chunk_shader);
if (fp::window::isKeyPressed(GLFW_KEY_R)){
BLT_DEBUG("R Key is pressed!");
if (fp::window::keyState())
BLT_TRACE("R Key Single Press!");
}
fp::camera::update();
fp::window::update();
}
@ -49,8 +44,11 @@ int main() {
chunk_shader = new fp::shader(shader_chunk_vert, shader_chunk_frag);
world = new fp::world();
world->setBlock(0, 0, 0, 1);
world->setBlock(2, 2, 2, 1);
world->setBlock({0, 0, 0}, 1);
world->setBlock({2, 2, 2}, 1);
world->setBlock({-2, 2, 2}, 1);
world->setBlock({-2, 2, -2}, 1);
world->setBlock({2, 2, -2}, 1);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);

2
src/render/camera.cpp
View File

@ -127,5 +127,7 @@ void fp::camera::update() {
position[1] += (float)(dy * window::getFrameDelta());
position[2] += (float)(dz * window::getFrameDelta());
// BLT_TRACE("Pos: %f, %f, %f", position[0], position[1], position[2]);
updateViewMatrix();
}

15
src/render/window.cpp
View File

@ -9,6 +9,11 @@
#include <blt/std/time.h>
#include <unordered_map>
#ifdef __EMSCRIPTEN__
#include <emscripten.h>
#include <emscripten/html5.h>
#endif
GLFWwindow* global_window = nullptr;
std::unordered_map<int, bool> key_state{};
@ -28,6 +33,15 @@ double mouse_last_x;
double mouse_dy;
double mouse_last_y;
#ifdef __EMSCRIPTEN__
EM_BOOL on_pointerlockchange(int eventType, const EmscriptenPointerlockChangeEvent *event, void *userData) {
BLT_TRACE("Emscripten pointer lock event status %d", event->isActive);
glfwSetInputMode(global_window, GLFW_CURSOR, event->isActive ? GLFW_CURSOR_DISABLED : GLFW_CURSOR_NORMAL);
return 0;
}
#endif
/**
* GLFW error callback
* @param error provided by GLFW
@ -119,6 +133,7 @@ void fp::window::init(int width, int height) {
int version = gladLoadGLES2(glfwGetProcAddress);
BLT_INFO("Using GLAD GL %d.%d\n", GLAD_VERSION_MAJOR(version), GLAD_VERSION_MINOR(version));
#else
emscripten_set_pointerlockchange_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, NULL, 0, on_pointerlockchange);
BLT_INFO("Using Emscripten!");
// we don't want to waste the web browser's resources or cause it to lockup
glfwSwapInterval(1);

4
src/world/chunk/storage.cpp
View File

@ -79,6 +79,6 @@ const float* face_decode[] = {
z_negative_vertices
};
void fp::mesh_storage::addFace(fp::face face, float x, float y, float z) {
add_and_translate(face_decode[face], x, y, z);
void fp::mesh_storage::addFace(fp::face face, const block_pos& pos) {
add_and_translate(face_decode[face], pos);
}

78
src/world/chunk/world.cpp
View File

@ -5,60 +5,31 @@
*/
#include <world/chunk/world.h>
//void fp::chunk::render(fp::shader& chunk_shader) {
// // process mesh updates
// if (isDirty){
// auto* new_mesh = generateMesh();
//
// auto& vertices = new_mesh->getVertices();
// //auto& indices = new_mesh->getIndices();
//
// BLT_INFO("Chunk mesh updated with %d vertices and %d indices taking (%d, %d) bytes!", vertices.size(), 0, vertices.size() * sizeof(float), 0 * sizeof(unsigned int));
//
// chunk_vao->getVBO(0)->update(vertices);
// //chunk_vao->getVBO(-1)->update(indices);
//
// render_size = vertices.size();
//
// delete(new_mesh);
// isDirty = false;
// }
//
// if (render_size > 0){
// chunk_vao->bind();
// glEnableVertexAttribArray(0);
// //glDrawElements(GL_TRIANGLES, render_size, GL_UNSIGNED_INT, nullptr);
// glDrawArrays(GL_TRIANGLES, 0, render_size);
// glDisableVertexAttribArray(0);
// }
//
//}
fp::mesh_storage* fp::world::generateChunkMesh(fp::chunk* chunk) {
void fp::world::generateChunkMesh(fp::chunk* chunk) {
auto* meshStorage = new mesh_storage;
if (chunk->dirtiness > 1) { // full chunk mesh
if (chunk->dirtiness == FULL_MESH) { // full chunk mesh
for (int i = 0; i < CHUNK_SIZE; i++) {
for (int j = 0; j < CHUNK_SIZE; j++) {
for (int k = 0; k < CHUNK_SIZE; k++) {
auto block = chunk->storage->get(i, j, k);
auto block = chunk->storage->get({i, j, k});
if (block != 0) {
meshStorage->addFace(X_NEG, i, j, k);
meshStorage->addFace(X_POS, i, j, k);
meshStorage->addFace(Y_NEG, i, j, k);
meshStorage->addFace(Y_POS, i, j, k);
meshStorage->addFace(Z_NEG, i, j, k);
meshStorage->addFace(Z_POS, i, j, k);
meshStorage->addFace(X_NEG, {i, j, k});
meshStorage->addFace(X_POS, {i, j, k});
meshStorage->addFace(Y_NEG, {i, j, k});
meshStorage->addFace(Y_POS, {i, j, k});
meshStorage->addFace(Z_NEG, {i, j, k});
meshStorage->addFace(Z_POS, {i, j, k});
}
}
}
}
} else if (chunk->dirtiness > 0){ // partial chunk mesh (had null edges)
} else if (chunk->dirtiness == PARTIAL_MESH){ // partial chunk mesh (had null edges)
}
return meshStorage;
chunk->mesh = meshStorage;
chunk->dirtiness = REFRESH;
}
void fp::world::update() {
@ -71,22 +42,31 @@ void fp::world::render(fp::shader& shader) {
for (const auto& chunk_pair : chunk_storage) {
auto chunk = chunk_pair.second;
if (chunk->dirtiness > 0){
auto mesh = generateChunkMesh(chunk);
auto& vertices = mesh->getVertices();
if (chunk->dirtiness > REFRESH){
generateChunkMesh(chunk);
}
BLT_INFO("Chunk mesh updated with %d vertices and %d indices taking (%d, %d) bytes!", vertices.size(), 0, vertices.size() * sizeof(float), 0 * sizeof(unsigned int));
if (chunk->dirtiness == REFRESH){
auto& vertices = chunk->mesh->getVertices();
BLT_INFO("Chunk [%d, %d, %d] mesh updated with %d vertices and %d indices taking (%d, %d) bytes!",
chunk->pos.x, chunk->pos.y, chunk->pos.z,
vertices.size(), 0, vertices.size() * sizeof(float), 0 * sizeof(unsigned int));
// upload the new vertices to the GPU
chunk->chunk_vao->getVBO(0)->update(vertices);
//chunk_vao->getVBO(-1)->update(indices);
chunk->render_size = vertices.size();
delete(mesh);
chunk->dirtiness = 0;
// delete the memory from the CPU.
delete(chunk->mesh);
chunk->mesh = nullptr;
chunk->dirtiness = OKAY;
}
if (chunk->render_size > 0){
blt::mat4x4 translation {};
translation.translate((float)chunk->pos.x * CHUNK_SIZE, (float)chunk->pos.y * CHUNK_SIZE, (float)chunk->pos.z * CHUNK_SIZE);
shader.setMatrix("translation", translation);
chunk->chunk_vao->bind();
glEnableVertexAttribArray(0);
//glDrawElements(GL_TRIANGLES, render_size, GL_UNSIGNED_INT, nullptr);