feat: add random seed

include/Cubed/app.hpp

@@ -18,7 +18,7 @@ public:
     static void window_reshape_callback(GLFWwindow* window, int new_width, int new_height);
 
     static int start_cubed_application(int argc, char** argv);
-    
+    static unsigned int seed();
     static float delte_time();
     static float get_fps();
 private:
@@ -38,7 +38,7 @@ private:
     inline static double fps_time_count = 0.0f;
     inline static int frame_count = 0;
     inline static int fps = 0;
-    
+    inline static unsigned int m_seed = 0;
     
     void init();
     

include/Cubed/gameplay/world.hpp

@@ -30,6 +30,8 @@ public:
     Player& get_player(const std::string& name);
     void init_world();
     bool is_aabb_in_frustum(const glm::vec3& center, const glm::vec3& half_extents);
+
+    int get_block(const glm::ivec3& block_pos) const;
     bool is_block(const glm::ivec3& block_pos) const;
     
     void need_gen();

include/Cubed/tools/perlin_noise.hpp

@@ -4,7 +4,7 @@
 
 class PerlinNoise {
 public:
-    static void init();
+    static void init(unsigned int seed);
     static float noise(float x, float y, float z);
 private:
     static inline bool is_init = false;

src/app.cpp

@@ -6,6 +6,7 @@
 #include <Cubed/tools/perlin_noise.hpp>
 
 #include <exception>
+#include <random>
 
 App::App() {
 
@@ -30,8 +31,10 @@ void App::init() {
     glfwSetWindowFocusCallback(m_window.get_glfw_window(), window_focus_callback);
     glfwSetWindowSizeCallback(m_window.get_glfw_window(), window_reshape_callback);
     glfwSetKeyCallback(m_window.get_glfw_window(), key_callback);
-    
-    PerlinNoise::init();
+    std::random_device d;
+    m_seed = d();
+    Logger::info("Seed: {}", m_seed);
+    PerlinNoise::init(m_seed);
     
     m_renderer.init();
     Logger::info("Renderer Init Success");
@@ -189,6 +192,10 @@ int App::start_cubed_application(int argc, char** argv) {
     return 1;
 }
 
+unsigned int App::seed() {
+    return m_seed;
+}
+
 float App::delte_time() {
     return delta_time;
 }

src/gameplay/chunk.cpp

@@ -29,10 +29,7 @@ int Chunk::get_index(int x, int y, int z) {
 
 void Chunk::gen_vertex_data() {
     m_vertexs_data.clear();
-    if (m_vbo != 0) {
-        glDeleteBuffers(1, &m_vbo);
-        m_vbo = 0;
-    }
+    
     
     for (int x = 0; x < CHUCK_SIZE; x++) {
         for (int y = 0; y < WORLD_SIZE_Y; y++) {
@@ -67,7 +64,11 @@ void Chunk::gen_vertex_data() {
         }
     }
 
-    glGenBuffers(1, &m_vbo);
+    if (m_vbo == 0) {
+        glGenBuffers(1, &m_vbo);
+        
+    }
+    
     glBindBuffer(GL_ARRAY_BUFFER, m_vbo);
     glBufferData(GL_ARRAY_BUFFER, m_vertexs_data.size() * sizeof(Vertex), m_vertexs_data.data(), GL_STATIC_DRAW);
     glBindBuffer(GL_ARRAY_BUFFER, 0);

src/gameplay/world.cpp

@@ -230,13 +230,30 @@ bool World::is_aabb_in_frustum(const glm::vec3& center, const glm::vec3& half_ex
     }
     return true;
 }
-bool World::is_block(const glm::ivec3& block_pos) const{
 
-    int world_x, world_y, world_z;
-    world_x = block_pos.x;
-    world_y = block_pos.y;
-    world_z = block_pos.z;
-    auto [chunk_x, chunk_z] = chunk_pos(world_x, world_z);
+int World::get_block(const glm::ivec3& block_pos) const {
+    auto [chunk_x, chunk_z] = chunk_pos(block_pos.x, block_pos.z);
+
+    auto it = m_chunks.find(ChunkPos{chunk_x, chunk_z});
+
+    if (it == m_chunks.end()) {
+        return 0;
+    }
+
+    const auto& chunk_blocks = it->second.get_chunk_blocks();
+    int x, y, z;
+    y = block_pos.y;
+    x = block_pos.x - chunk_x * CHUCK_SIZE;
+    z = block_pos.z - chunk_z * CHUCK_SIZE;
+    if (x < 0 || y < 0 || z < 0 || x >= CHUCK_SIZE || y >= WORLD_SIZE_Y || z >= CHUCK_SIZE) {
+        return 0;
+    }
+    return chunk_blocks[Chunk::get_index(x, y, z)];
+
+}
+
+bool World::is_block(const glm::ivec3& block_pos) const{
+    auto [chunk_x, chunk_z] = chunk_pos(block_pos.x, block_pos.z);
 
     auto it = m_chunks.find(ChunkPos{chunk_x, chunk_z});
 
@@ -246,9 +263,9 @@ bool World::is_block(const glm::ivec3& block_pos) const{
 
     const auto& chunk_blocks = it->second.get_chunk_blocks();
     int x, y, z;
-    y = world_y;
-    x = world_x - chunk_x * CHUCK_SIZE;
-    z = world_z - chunk_z * CHUCK_SIZE;
+    y = block_pos.y;
+    x = block_pos.x - chunk_x * CHUCK_SIZE;
+    z = block_pos.z - chunk_z * CHUCK_SIZE;
     if (x < 0 || y < 0 || z < 0 || x >= CHUCK_SIZE || y >= WORLD_SIZE_Y || z >= CHUCK_SIZE) {
         return false;
     }

src/tools/perlin_noise.cpp

@@ -7,11 +7,11 @@
 #include <numeric>
 #include <random>
 
-void PerlinNoise::init() {
+void PerlinNoise::init(unsigned int seed) {
     p.resize(256);
     std::iota(p.begin(), p.end(), 0);
 
-    std::mt19937 engine(SEED);
+    std::mt19937 engine(seed);
     std::shuffle(p.begin(), p.end(), engine);
 
     p.insert(p.end(), p.begin(), p.end());