need to do the idea thingy tired though

include/blt/gfx/loader/obj_loader.h

@@ -20,12 +20,16 @@
 #define BLT_WITH_GRAPHICS_OBJ_LOADER_H
 
 #include "blt/math/vectors.h"
+#include "blt/std/hashmap.h"
+#include <utility>
+#include <vector>
+#include <string_view>
 
 namespace blt::gfx
 {
     
-    typedef blt::vec4 vertex_t;
+    typedef blt::vec3 vertex_t;
-    typedef blt::vec3 uv_t;
+    typedef blt::vec2 uv_t;
     typedef blt::vec3 normal_t;
     
     struct face_t
@@ -33,6 +37,68 @@ namespace blt::gfx
         std::int32_t vertex, uv, normal;
     };
     
+    struct constructed_vertex_t
+    {
+        vertex_t vertex;
+        uv_t uv;
+        normal_t normal;
+    };
+    
+    struct triangle_t
+    {
+        std::int32_t v1, v2, v3;
+    };
+    
+    class obj_loader;
+    
+    class obj_object_t
+    {
+            friend obj_loader;
+        private:
+            // TODO: shared VBO?
+            std::string object_name;
+            std::vector<constructed_vertex_t> vertices_;
+            std::vector<std::int32_t> indices_;
+            
+            obj_object_t(std::string_view name, std::vector<constructed_vertex_t> vertices, std::vector<std::int32_t> indices):
+                    object_name(name), vertices_(std::move(vertices)), indices_(std::move(indices))
+            {}
+        
+        public:
+            inline const std::vector<constructed_vertex_t>& vertices()
+            {
+                return vertices_;
+            };
+            
+            inline const std::vector<std::int32_t>& indices()
+            {
+                return indices_;
+            };
+    };
+    
+    class obj_loader
+    {
+        private:
+            std::vector<vertex_t> vertices;
+            std::vector<uv_t> uvs;
+            std::vector<normal_t> normals;
+            struct object_data
+            {
+                std::string object_name;
+                // maps between vertex indices -> face (constructed vertex)
+                HASHMAP<std::int32_t, constructed_vertex_t> vertex_data;
+                std::vector<std::int32_t> indices;
+            };
+        
+        private:
+            void parse_face(std::string_view line);
+        
+        public:
+            void parseFile(std::string_view file);
+    };
+    
+    std::vector<obj_object_t> quick_load(std::string_view file);
+    
 }
 
 #endif //BLT_WITH_GRAPHICS_OBJ_LOADER_H

src/blt/gfx/loader/obj_loader.cpp

@@ -15,4 +15,79 @@
  *  You should have received a copy of the GNU General Public License
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
-#include <blt/gfx/loader/obj_loader.h>
+#include <blt/gfx/loader/obj_loader.h>
+#include <blt/std/loader.h>
+#include <blt/std/string.h>
+#include <blt/std/logging.h>
+
+namespace blt::gfx
+{
+    class char_tokenizer
+    {
+        private:
+            std::string_view string;
+            std::size_t current_pos = 0;
+        public:
+            explicit char_tokenizer(std::string_view view): string(view)
+            {}
+            
+            char peek()
+            {
+                return string[current_pos];
+            }
+            
+            char advance()
+            {
+                return string[current_pos++];
+            }
+            
+            bool has_next(size_t offset = 0)
+            {
+                return current_pos + offset < string.size();
+            }
+    };
+    
+    std::vector<obj_object_t> quick_load(std::string_view file)
+    {
+        std::vector<obj_object_t> objects;
+        
+        
+        return objects;
+    }
+    
+    void obj_loader::parseFile(std::string_view file)
+    {
+        auto lines = blt::fs::getLinesFromFile(std::string(file));
+        for (const auto& line : lines)
+        {
+            char_tokenizer token(line);
+            // line is empty?
+            if (!token.has_next())
+                continue;
+            switch (token.advance())
+            {
+                case '#':
+                    continue;
+                case 'f':
+                {
+                    
+                    break;
+                }
+                case 'v':
+                {
+                    
+                    break;
+                }
+                case 'o':
+                {
+                
+                }
+            }
+        }
+    }
+    
+    void obj_loader::parse_face(std::string_view line)
+    {
+    
+    }
+}