Added block creation utilities

build.bash

@@ -4,9 +4,9 @@ mkdir -p dependencies/build/
 
 gcc -g -o dependencies/build/glad.o \
     -c dependencies/sources/glad/glad.c \
-    -I dependencies/include/
+    -I dependencies/include/ -Wall
 
 gcc -g -o techneck.elf \
     code/source-c/*.c dependencies/build/glad.o \
-    -I dependencies/include -lGL -lSDL2 -lm
+    -I dependencies/include -lGL -lSDL2 -lm -Wall
 

code/source-c/assets.c

@@ -6,6 +6,9 @@
 #define STB_IMAGE_IMPLEMENTATION
 #include <stb_image.h>
 
+// TODO: This can be done better.
+uint32_t            tc_image_id_counter         = 1;
+
 tc_asset_storage_s tc_init_asset_storage(char *asset_folder_path)
 {
     tc_asset_storage_s          assets;
@@ -35,17 +38,26 @@ void tc_upload_image(tc_image_s *image)
         GL_UNSIGNED_BYTE,
         image->pixels
     );
+    
+    image->is_uploaded              = true;
 }
 
 tc_image_s * tc_load_image_from_disk(char *path)
 {
     tc_image_s                 *image               = malloc(sizeof(tc_image_s));
     image->attributes_capacity      = 8;
-    image->attributes               = calloc(sizeof(tc_asset_attribute_s), image->attributes_capacity);
+    image->attributes               =
+        calloc(sizeof(tc_asset_attribute_s), image->attributes_capacity);
     image->num_attributes           = 0;
     image->pixels                   = stbi_load(path, &image->width, &image->height, NULL, 4);
     image->len_name                 = 0;
     image->name                     = NULL;
+    image->x                        = 0;
+    image->y                        = 0;
+    image->is_subimage              = false;
+    image->superimage               = NULL;
+    image->image_id                 = tc_image_id_counter;
+    ++tc_image_id_counter;
     
     if(tc_game_state_g.asset_storage.num_images >= tc_game_state_g.asset_storage.images_capacity)
     {
@@ -57,7 +69,79 @@ tc_image_s * tc_load_image_from_disk(char *path)
     }
     
     tc_game_state_g.asset_storage.images[tc_game_state_g.asset_storage.num_images] = image;
+    ++tc_game_state_g.asset_storage.num_images;
     
     return image;
 }
 
+tc_image_s * tc_create_subimage(tc_image_s *superimage,
+    uint32_t x, uint32_t y,
+    uint32_t width, uint32_t height
+) {
+    if(!superimage->is_uploaded)
+    {
+        puts("Superimages must have been uploaded before creating a subimage!");
+        return NULL;
+    }
+    
+    tc_image_s                 *image               = malloc(sizeof(tc_image_s));
+    image->attributes_capacity      = 8;
+    image->attributes               =
+        calloc(sizeof(tc_asset_attribute_s), image->attributes_capacity);
+    image->num_attributes           = 0;
+    image->pixels                   = NULL;
+    image->len_name                 = 0;
+    image->name                     = NULL;
+    image->x                        = x;
+    image->y                        = y;
+    image->is_subimage              = true;
+    image->width                    = width;
+    image->height                   = height;
+    image->superimage               = superimage;
+    image->image_id                 = tc_image_id_counter;
+    ++tc_image_id_counter;
+    
+    if(tc_game_state_g.asset_storage.num_images >= tc_game_state_g.asset_storage.images_capacity)
+    {
+        tc_game_state_g.asset_storage.images_capacity  *= 2;
+        tc_game_state_g.asset_storage.images            =
+            realloc(tc_game_state_g.asset_storage.images,
+            sizeof(tc_image_s *) * tc_game_state_g.asset_storage.images_capacity
+        );
+    }
+    
+    tc_game_state_g.asset_storage.images[tc_game_state_g.asset_storage.num_images] = image;
+    ++tc_game_state_g.asset_storage.num_images;
+    
+    return tc_game_state_g.asset_storage.images[tc_game_state_g.asset_storage.num_images-1];
+}
+
+tc_image_s * tc_resolve_id_to_image(uint32_t id)
+{
+    uint32_t        image_index         = 0;
+    while(image_index < tc_game_state_g.asset_storage.num_images)
+    {
+        if(tc_game_state_g.asset_storage.images[image_index]->image_id == id)
+            return tc_game_state_g.asset_storage.images[image_index];
+        ++image_index;
+    }
+    return NULL;
+}
+
+tc_image_s * tc_resolve_name_to_image(char *name)
+{
+    uint32_t        image_index         = 0;
+    while(image_index < tc_game_state_g.asset_storage.num_images)
+    {
+        if(tc_game_state_g.asset_storage.images[image_index]->name == NULL)
+        {
+            ++image_index;
+            continue;
+        }
+        if(!strcmp(tc_game_state_g.asset_storage.images[image_index]->name, name))
+            return tc_game_state_g.asset_storage.images[image_index];
+        ++image_index;
+    }
+    return NULL;
+}
+

code/source-c/assets.h

@@ -6,6 +6,8 @@
 #include <stdint.h>
 #include <stdio.h>
 
+typedef struct  tc_image        tc_image_s;
+
 typedef struct tc_asset_attribute
 {
     char                       *issuer;
@@ -21,9 +23,15 @@ typedef struct tc_asset_attribute
     
 } tc_asset_attribute_s;
 
-typedef struct tc_image
-{   
+struct tc_image
+{
+    bool                        is_subimage;
+    bool                        is_uploaded;
+    
+    tc_image_s                 *superimage;
+    
     uint32_t                    gl_identifier;
+    uint32_t                    image_id;
     
     uint32_t                    len_name;
     char                       *name;
@@ -32,18 +40,20 @@ typedef struct tc_image
     uint32_t                    num_attributes;
     tc_asset_attribute_s       *attributes;
     
+    uint32_t                    x;      // Only used if this is a subimage
+    uint32_t                    y;      // Only used if this is a subimage
     uint32_t                    width;
     uint32_t                    height;
     void                       *pixels;
     
-} tc_image_s;
+};
 
 typedef struct tc_asset_storage
 {
     uint32_t                    images_capacity;
     uint32_t                    num_images;
     tc_image_s                **images;
-    
+   
     // todo: meshes
     
 } tc_asset_storage_s;
@@ -52,5 +62,12 @@ tc_asset_storage_s          tc_init_asset_storage           (char *asset_folder_
 tc_image_s *                tc_load_image_from_disk         (char *path);
 void                        tc_upload_image                 (tc_image_s *image);
 
+tc_image_s *                tc_resolve_id_to_image          (uint32_t id);
+tc_image_s *                tc_resolve_name_to_image        (char *name);
+
+tc_image_s *                tc_create_subimage(tc_image_s *superimage,
+    uint32_t x, uint32_t y,
+    uint32_t width, uint32_t height);
+
 #endif
 

code/source-c/blocks.c

@@ -3,18 +3,34 @@
 
 #include <stdlib.h>
 
-tc_block_entry_s tc_new_block_entry(char *name)
+
+tc_block_entry_s * tc_new_block_entry(char *name)
 {
-    tc_block_entry_s            entry;
-    entry.name                      = name;
-    entry.attributes_capacity       = 16;
-    entry.num_attributes            = 0;
-    entry.attributes                = calloc(sizeof(tc_block_attribute_s), entry.attributes_capacity);
+    tc_block_entry_s           *entry               = malloc(sizeof(tc_block_entry_s));
+    entry->name                     = name;
+    entry->attributes_capacity      = 16;
+    entry->num_attributes           = 0;
+    entry->attributes               = calloc(
+        sizeof(tc_block_attribute_s), entry->attributes_capacity
+    );
+    
+    if(tc_game_state_g.block_registry.num_blocks >= tc_game_state_g.block_registry.blocks_capacity)
+    {
+        tc_game_state_g.block_registry.blocks = 
+            realloc(tc_game_state_g.block_registry.blocks,
+            sizeof(tc_block_entry_s)
+                *
+            tc_game_state_g.block_registry.blocks_capacity
+        );
+    }
+    
+    tc_game_state_g.block_registry.blocks[tc_game_state_g.block_registry.num_blocks] = entry;
+    ++tc_game_state_g.block_registry.num_blocks;
     
     return entry;
 }
 
-void tc_add_attribute_to_block(tc_block_entry_s *entry, tc_block_attribute_s attribute)
+void tc_add_attribute_to_block_entry(tc_block_entry_s *entry, tc_block_attribute_s attribute)
 {
     if(entry->num_attributes >= entry->attributes_capacity)
     {
@@ -24,6 +40,21 @@ void tc_add_attribute_to_block(tc_block_entry_s *entry, tc_block_attribute_s att
     }
     
     entry->attributes[entry->num_attributes]    = attribute;
+    ++entry->num_attributes;
+}
+
+
+tc_block_attribute_s * tc_block_resolve_name_to_attribute(tc_block_entry_s *block, char *name)
+{
+    uint32_t attribute_index = 0;
+    while(attribute_index < block->num_attributes)
+    {
+        if(!strcmp(block->attributes[attribute_index].name, name))
+            return &block->attributes[attribute_index];
+        
+        ++attribute_index;
+    }
+    return NULL;
 }
 
 tc_block_entry_s * tc_get_block(char *name)
@@ -31,20 +62,109 @@ tc_block_entry_s * tc_get_block(char *name)
     uint32_t index = 0;
     while(index < tc_game_state_g.block_registry.num_blocks)
     {
-        if(!strcmp(tc_game_state_g.block_registry.blocks[index].name, name))
-            return &tc_game_state_g.block_registry.blocks[index];
+        if(!strcmp(tc_game_state_g.block_registry.blocks[index]->name, name))
+            return tc_game_state_g.block_registry.blocks[index];
         
         ++index;
     }
     return NULL;
 }
 
+tc_block_entry_s * tc_resolve_id_to_block_entry(uint32_t id)
+{
+    uint32_t index = 0;
+    while(index < tc_game_state_g.block_registry.num_blocks)
+    {
+        if(tc_game_state_g.block_registry.blocks[index]->identifier == id)
+        {
+            return tc_game_state_g.block_registry.blocks[index];
+        }
+        ++index;
+    }
+    return NULL;
+}
+
 tc_block_registry_s tc_init_blocks()
 {
     tc_block_registry_s         registry;
     registry.blocks_capacity        = 256;
+    registry.num_blocks             = 0;
     registry.blocks                 = calloc(sizeof(tc_block_entry_s), registry.blocks_capacity);
     
     return registry;
 }
 
+tc_block_entry_s * tc_new_cube_block(tc_cube_info_s info)
+{
+    tc_block_entry_s        *entry      = tc_new_block_entry(info.name);
+    entry->identifier                   = info.identifier;
+    
+    tc_block_attribute_s    block_type_attrib;
+    block_type_attrib.name              = "block_type";
+    block_type_attrib.value.string      = "basic_cube";
+    tc_add_attribute_to_block_entry(entry, block_type_attrib);
+    
+    tc_block_attribute_s    top_attrib;
+    top_attrib.name                     = "top_texture";
+    top_attrib.value.pointer            = tc_resolve_id_to_image(info.texture_top);
+    tc_add_attribute_to_block_entry(entry, top_attrib);
+    
+    tc_block_attribute_s    bottom_attrib;
+    bottom_attrib.name                  = "bottom_texture";
+    bottom_attrib.value.pointer         = tc_resolve_id_to_image(info.texture_bottom);
+    tc_add_attribute_to_block_entry(entry, bottom_attrib);
+    
+    tc_block_attribute_s    east_attrib;
+    east_attrib.name                    = "east_texture";
+    east_attrib.value.pointer           = tc_resolve_id_to_image(info.texture_east);
+    tc_add_attribute_to_block_entry(entry, east_attrib);
+    
+    tc_block_attribute_s    west_attrib;
+    west_attrib.name                    = "west_texture";
+    west_attrib.value.pointer           = tc_resolve_id_to_image(info.texture_west);
+    tc_add_attribute_to_block_entry(entry, west_attrib);
+    
+    tc_block_attribute_s    back_attrib;
+    back_attrib.name                    = "back_texture";
+    back_attrib.value.pointer           = tc_resolve_id_to_image(info.texture_back);
+    tc_add_attribute_to_block_entry(entry, back_attrib);
+    
+    tc_block_attribute_s    front_attrib;
+    front_attrib.name                   = "front_texture";
+    front_attrib.value.pointer          = tc_resolve_id_to_image(info.texture_front);
+    tc_add_attribute_to_block_entry(entry, front_attrib);
+    
+    return entry;
+}
+
+tc_cube_info_s tc_gen_unitexture_cube_info
+    (char *name, uint32_t identifier, uint32_t texture)
+{
+    tc_cube_info_s      cube_info;
+    cube_info.name              = name;
+    cube_info.identifier        = identifier;
+    cube_info.texture_top       = texture;
+    cube_info.texture_bottom    = texture;
+    cube_info.texture_east      = texture;
+    cube_info.texture_west      = texture;
+    cube_info.texture_back      = texture;
+    cube_info.texture_front     = texture;
+    
+    return cube_info;
+}
+
+void tc_create_blocks()
+{
+    tc_image_s         *dirt_texture    = tc_resolve_name_to_image("dirt");
+    tc_image_s         *grass_texture   = tc_resolve_name_to_image("grass");
+    tc_image_s         *stone_texture   = tc_resolve_name_to_image("stone");
+    
+    tc_cube_info_s      dirt            = tc_gen_unitexture_cube_info("Dirt", 1,  dirt_texture->image_id);
+    tc_cube_info_s      grass           = tc_gen_unitexture_cube_info("Grass", 2, grass_texture->image_id);
+    tc_cube_info_s      stone           = tc_gen_unitexture_cube_info("Stone", 3, stone_texture->image_id);
+    
+    tc_new_cube_block(dirt);
+    tc_new_cube_block(grass);
+    tc_new_cube_block(stone);
+}
+

code/source-c/blocks.h

@@ -9,11 +9,13 @@
 
 typedef struct tc_block_attribute
 {
-    uint32_t                    len_name;
-    uint32_t                    len_content;
-    
     char                       *name;
-    void                       *content;
+    
+    union {
+        void                       *pointer;
+        char                       *string;
+        int64_t                     integer;
+    } value;
     
 } tc_block_attribute_s;
 
@@ -32,16 +34,44 @@ typedef struct tc_block_registry
 {
     uint32_t                    blocks_capacity;
     uint32_t                    num_blocks;
-    tc_block_entry_s           *blocks;
+    tc_block_entry_s           **blocks;
     
 } tc_block_registry_s;
 
-tc_block_entry_s            tc_new_block_entry              (char *name);
-void                        tc_add_attribute_to_block
+
+
+tc_block_entry_s *          tc_new_block_entry              (char *name);
+void                        tc_add_attribute_to_block_entry
     (tc_block_entry_s *entry, tc_block_attribute_s attribute);
+tc_block_attribute_s *      tc_block_resolve_name_to_attribute      (tc_block_entry_s *block, char *name);
+
 tc_block_entry_s *          tc_get_block                    (char *name);
+tc_block_entry_s *          tc_resolve_id_to_block_entry    (uint32_t id);
 
 tc_block_registry_s         tc_init_blocks                  ();
 
+
+
+typedef struct tc_cube_info
+{
+    char                       *name;
+    
+    uint32_t                    identifier;
+    
+    uint32_t                    texture_top;
+    uint32_t                    texture_bottom;
+    uint32_t                    texture_east;
+    uint32_t                    texture_west;
+    uint32_t                    texture_back;
+    uint32_t                    texture_front;
+    
+} tc_cube_info_s;
+
+tc_cube_info_s              tc_gen_unitexture_cube_info
+    (char *name, uint32_t identifier, uint32_t texture);
+
+tc_block_entry_s *          tc_new_cube_block                       (tc_cube_info_s info);
+void                        tc_create_blocks                        ();
+
 #endif
 

code/source-c/default_terrain_generator.c

@@ -28,4 +28,5 @@ bool tc_generate_default_terrain_chunk(tc_worldgen_s *gen, tc_chunk_s *chunk)
     }
     
     return true;
-}           
+}
+

code/source-c/initialization.c

@@ -3,7 +3,8 @@
 
 #include <SDL2/SDL.h>
 
-const char *tc_window_title_g = "Techneck";
+const char     *tc_window_title_g = "Techneck";
+techneck_s      tc_game_state_g;
 
 void tc_init_renderer(techneck_s *techneck)
 {
@@ -29,24 +30,41 @@ void tc_init_renderer(techneck_s *techneck)
     techneck->renderer.draw_shader                 = tc_make_shader_program("vertex_shader.glsl", "fragment_shader.glsl");
     
     glEnable(GL_DEPTH_TEST);
-    
+    glEnable(GL_CULL_FACE);
+    glCullFace(GL_BACK);
 }
 
 void tc_load_textures()
 {
     tc_game_state_g.block_texture_atlas = tc_load_image_from_disk("assets/block_atlas.png");
+    tc_game_state_g.block_texture_atlas->name = "Atlas";
     tc_upload_image(tc_game_state_g.block_texture_atlas);
+    
+    tc_image_s             *dirt        =
+        tc_create_subimage(tc_game_state_g.block_texture_atlas, 0, 0, 8, 8);
+    dirt->name                  = "dirt";
+    printf("POiNTA: %p!\n", dirt);
+    printf("Resolving from array: %p\n", tc_game_state_g.asset_storage.images);
+    
+    tc_image_s             *grass       =
+        tc_create_subimage(tc_game_state_g.block_texture_atlas, 8, 0, 8, 8);
+    grass->name                 = "grass";
+    
+    tc_image_s             *stone       =
+        tc_create_subimage(tc_game_state_g.block_texture_atlas, 16, 0, 8, 8);
+    stone->name                 = "stone";
 }
 
-techneck_s tc_init()
+void tc_init()
 {
-    techneck_s              techneck;
-    tc_init_renderer(&techneck);
-    techneck.main_world         = tc_init_worlds();
-    techneck.asset_storage      = tc_init_asset_storage("assets/");
-    techneck.block_registry     = tc_init_blocks();
+    tc_init_renderer(&tc_game_state_g);
+    tc_game_state_g.asset_storage      = tc_init_asset_storage("assets/");
+    tc_load_textures();
+    tc_game_state_g.block_registry     = tc_init_blocks();
+    tc_create_blocks();
+    tc_game_state_g.main_world         = tc_init_worlds();
     
-    return techneck;
+    puts("Finished initializing!");
 }
 
 void tc_cleanup()

code/source-c/main.c

@@ -1,7 +1,5 @@
 #include "state.h"
 
-techneck_s       tc_game_state_g;
-
 #include <glad/glad.h>
 #include <SDL2/SDL.h>
 #include <linmath.h>
@@ -13,57 +11,57 @@ float triangle_vertices[108] =
 {
     // Front
     -0.5f, -0.5f, -0.5f,
-    -0.5f, 0.5f, -0.5f,
-    0.5f, -0.5f, -0.5f,
+    -0.5f,  0.5f, -0.5f,
+     0.5f, -0.5f, -0.5f,
     
-    0.5f, 0.5f, -0.5f,
-    0.5f, -0.5f, -0.5f,
-    -0.5f, 0.5f, -0.5f,
+     0.5f,  0.5f, -0.5f,
+     0.5f, -0.5f, -0.5f,
+    -0.5f,  0.5f, -0.5f,
     
     // Back
-    -0.5f, -0.5f, 0.5f,
-    -0.5f, 0.5f, 0.5f,
-    0.5f, -0.5f, 0.5f,
+     0.5f, -0.5f,  0.5f,
+    -0.5f,  0.5f,  0.5f,
+    -0.5f, -0.5f,  0.5f,
     
-    0.5f, 0.5f, 0.5f,
-    0.5f, -0.5f, 0.5f,
-    -0.5f, 0.5f, 0.5f,
+    -0.5f,  0.5f,  0.5f,
+     0.5f, -0.5f,  0.5f,
+     0.5f,  0.5f,  0.5f,
     
     // Left
-    -0.5f, 0.5f, -0.5f,
+    -0.5f,  0.5f, -0.5f,
     -0.5f, -0.5f, -0.5f,
-    -0.5f, -0.5f, 0.5f,
+    -0.5f, -0.5f,  0.5f,
     
-    -0.5f, 0.5f, -0.5f,
-    -0.5f, 0.5f, 0.5f,
-    -0.5f, -0.5f, 0.5f,
+    -0.5f, -0.5f,  0.5f,
+    -0.5f,  0.5f,  0.5f,
+    -0.5f,  0.5f, -0.5f,
     
     // Right
-    0.5f, 0.5f, -0.5f,
-    0.5f, -0.5f, -0.5f,
-    0.5f, -0.5f, 0.5f,
+     0.5f, -0.5f,  0.5f,
+     0.5f, -0.5f, -0.5f,
+     0.5f,  0.5f, -0.5f,
     
-    0.5f, 0.5f, -0.5f,
-    0.5f, 0.5f, 0.5f,
-    0.5f, -0.5f, 0.5f,
+     0.5f,  0.5f, -0.5f,
+     0.5f,  0.5f,  0.5f,
+     0.5f, -0.5f,  0.5f,
     
     // Top
-    -0.5f, 0.5f, -0.5f,
-    -0.5f, 0.5f, 0.5f,
-    0.5f, 0.5f, -0.5f,
+    -0.5f,  0.5f, -0.5f,
+    -0.5f,  0.5f,  0.5f,
+     0.5f,  0.5f, -0.5f,
     
-    0.5f, 0.5f, 0.5f,
-    -0.5f, 0.5f, 0.5f,
-    0.5f, 0.5f, -0.5f,
+    -0.5f,  0.5f,  0.5f,
+     0.5f,  0.5f,  0.5f,
+     0.5f,  0.5f, -0.5f,
     
     // Bottom
+    -0.5f, -0.5f,  0.5f,
     -0.5f, -0.5f, -0.5f,
-    -0.5f, -0.5f, 0.5f,
-    0.5f, -0.5f, -0.5f,
+     0.5f, -0.5f, -0.5f,
     
-    0.5f, -0.5f, 0.5f,
-    -0.5f, -0.5f, 0.5f,
-    0.5f, -0.5f, -0.5f
+     0.5f, -0.5f,  0.5f,
+    -0.5f, -0.5f,  0.5f,
+     0.5f, -0.5f, -0.5f
 };
 
 tc_vec3_s               tc_camera_position = { 0.0f, 0.0f, 0.0f };
@@ -300,12 +298,12 @@ bool update()
 
 int main(int argc, char **argv)
 {
-    tc_game_state_g                     = tc_init();
+    tc_init();
     tc_new_chunk(&tc_game_state_g.main_world, 1.0f, 1.0f, 1.0f);
     
-    tc_load_textures();
     
     block    = tc_new_block_at_3f(0.0, 0.0, 0.0);
+    // tc_new_cube_block();
     
     int64_t                 frame_index         = 1;
     while(frame_index > 0)

code/source-c/meshize.c

@@ -1,4 +1,5 @@
 #include "world.h"
+#include "assets.h"
 
 #include <stdlib.h>
 #include <string.h>
@@ -15,27 +16,27 @@ float tc_block_vertices[108] =
     -0.5f,  0.5f, -0.5f,
     
     // Back
+     0.5f, -0.5f,  0.5f,
+    -0.5f,  0.5f,  0.5f,
     -0.5f, -0.5f,  0.5f,
-    -0.5f,  0.5f,  0.5f,
-     0.5f, -0.5f,  0.5f,
     
-     0.5f,  0.5f,  0.5f,
-     0.5f, -0.5f,  0.5f,
     -0.5f,  0.5f,  0.5f,
+     0.5f, -0.5f,  0.5f,
+     0.5f,  0.5f,  0.5f,
     
     // Left
     -0.5f,  0.5f, -0.5f,
     -0.5f, -0.5f, -0.5f,
     -0.5f, -0.5f,  0.5f,
     
-    -0.5f,  0.5f, -0.5f,
-    -0.5f,  0.5f,  0.5f,
     -0.5f, -0.5f,  0.5f,
+    -0.5f,  0.5f,  0.5f,
+    -0.5f,  0.5f, -0.5f,
     
     // Right
-     0.5f,  0.5f, -0.5f,
-     0.5f, -0.5f, -0.5f,
      0.5f, -0.5f,  0.5f,
+     0.5f, -0.5f, -0.5f,
+     0.5f,  0.5f, -0.5f,
     
      0.5f,  0.5f, -0.5f,
      0.5f,  0.5f,  0.5f,
@@ -46,13 +47,13 @@ float tc_block_vertices[108] =
     -0.5f,  0.5f,  0.5f,
      0.5f,  0.5f, -0.5f,
     
-     0.5f,  0.5f,  0.5f,
     -0.5f,  0.5f,  0.5f,
+     0.5f,  0.5f,  0.5f,
      0.5f,  0.5f, -0.5f,
     
     // Bottom
-    -0.5f, -0.5f, -0.5f,
     -0.5f, -0.5f,  0.5f,
+    -0.5f, -0.5f, -0.5f,
      0.5f, -0.5f, -0.5f,
     
      0.5f, -0.5f,  0.5f,
@@ -60,7 +61,7 @@ float tc_block_vertices[108] =
      0.5f, -0.5f, -0.5f
 };
 
-float test_uvs[72] =
+float tc_generic_cube_uvs[72] =
 {
     // Front
     0.0f, 0.0f,
@@ -72,13 +73,13 @@ float test_uvs[72] =
     0.0f, 1.0f,
     
     // Back
-    1.0f, 1.0f,
     1.0f, 0.0f,
     0.0f, 1.0f,
-    
     0.0f, 0.0f,
+    
     0.0f, 1.0f,
     1.0f, 0.0f,
+    1.0f, 1.0f,
     
     // Left
     1.0f, 0.0f,
@@ -107,7 +108,7 @@ float test_uvs[72] =
     0.0f, 1.0f,
     1.0f, 0.0f,
     
-    // Back
+    // Bottom
     1.0f, 1.0f,
     1.0f, 0.0f,
     0.0f, 1.0f,
@@ -145,6 +146,74 @@ uint32_t tc_count_chunk_vertices(tc_chunk_s *chunk)
     return num_vertices;
 }
 
+void tc_modify_basic_cube_face_uvs_to_fit(tc_image_s *image, float *face_uvs)
+{
+    float           lower_x         = ((float) image->x) / ((float) image->width);
+    float           lower_y         = ((float) image->y) / ((float) image->height);
+    float           higher_x;
+    float           higher_y;
+    
+    if(image->superimage != NULL)
+    {
+        higher_x            = (((float) (image->x + image->width))  / ((float) image->superimage->width));
+        higher_y            = (((float) (image->y + image->height)) / ((float) image->superimage->height));
+    }
+    else
+    {
+        higher_x            = 1.0f;
+        higher_y            = 1.0f;
+    }
+    
+    uint32_t        num_floats      = 2 * 6;
+    uint32_t        index           = 0;
+    
+    while(index < num_floats)
+    {
+        if(face_uvs[index] == 1.0f)
+        {
+            face_uvs[index] = higher_x;
+        }
+        else
+        {
+            face_uvs[index] = lower_x;
+        }
+        
+        ++index;
+        
+        if(face_uvs[index] == 1.0f)
+        {
+            face_uvs[index] = higher_y;
+        }
+        else
+        {
+            face_uvs[index] = lower_y;
+        }
+        ++index;
+    }
+}
+
+void tc_generate_basic_cube_uvs(tc_block_entry_s *entry, float *block_uvs)
+{
+    uint32_t        num_floats      = 2 * 36;
+    memcpy(block_uvs, tc_generic_cube_uvs, sizeof(float) * num_floats);
+    
+    tc_block_attribute_s       *front       = tc_block_resolve_name_to_attribute(entry, "front_texture");
+    tc_block_attribute_s       *back        = tc_block_resolve_name_to_attribute(entry, "back_texture");
+    tc_block_attribute_s       *west        = tc_block_resolve_name_to_attribute(entry, "west_texture");
+    tc_block_attribute_s       *east        = tc_block_resolve_name_to_attribute(entry, "east_texture");
+    tc_block_attribute_s       *top         = tc_block_resolve_name_to_attribute(entry, "top_texture");
+    tc_block_attribute_s       *bottom      = tc_block_resolve_name_to_attribute(entry, "bottom_texture");
+    
+    uint32_t        num_floats_per_face     = 2 * 6;
+    
+    tc_modify_basic_cube_face_uvs_to_fit(front->value.pointer,  &block_uvs[0]);
+    tc_modify_basic_cube_face_uvs_to_fit(back->value.pointer,   &block_uvs[num_floats_per_face]);
+    tc_modify_basic_cube_face_uvs_to_fit(west->value.pointer,   &block_uvs[num_floats_per_face*2]);
+    tc_modify_basic_cube_face_uvs_to_fit(east->value.pointer,   &block_uvs[num_floats_per_face*3]);
+    tc_modify_basic_cube_face_uvs_to_fit(top->value.pointer,    &block_uvs[num_floats_per_face*4]);
+    tc_modify_basic_cube_face_uvs_to_fit(bottom->value.pointer, &block_uvs[num_floats_per_face*5]);
+}
+
 void tc_meshize_chunk(tc_chunk_s *chunk)
 {
     chunk->num_vertices             = tc_count_chunk_vertices(chunk);
@@ -155,8 +224,6 @@ void tc_meshize_chunk(tc_chunk_s *chunk)
     float                       block_positions[36*3];
     float                       block_uvs[36*2];
     
-    memcpy(block_uvs, test_uvs, sizeof(float) * 36 * 2);
-    
     uint32_t                    x_in_chunk              = 0;
     uint32_t                    y_in_chunk              = 0;
     uint32_t                    z_in_chunk              = 0;
@@ -168,7 +235,26 @@ void tc_meshize_chunk(tc_chunk_s *chunk)
             z_in_chunk                      = 0;
             while(z_in_chunk < 32)
             {
-                if(chunk->blocks[x_in_chunk][y_in_chunk][z_in_chunk] > 0)
+                tc_block_entry_s           *entry           =
+                  tc_resolve_id_to_block_entry(
+                    chunk->blocks[x_in_chunk][y_in_chunk][z_in_chunk]
+                  );
+                if(entry == NULL)
+                {
+                    ++z_in_chunk;
+                    continue;
+                }
+                
+                tc_block_attribute_s       *block           =
+                    tc_block_resolve_name_to_attribute(entry, "block_type");
+                
+                if(block == NULL)
+                {
+                    ++z_in_chunk;
+                    continue;
+                }
+                
+                if(!strcmp(block->value.string, "basic_cube"))
                 {
                     memcpy(
                         block_positions,
@@ -191,6 +277,9 @@ void tc_meshize_chunk(tc_chunk_s *chunk)
                         ++vertex_of_block;
                     }
                     
+                    memcpy(block_uvs, tc_generic_cube_uvs, sizeof(float) * 36 * 2);
+                    tc_generate_basic_cube_uvs(entry, block_uvs);
+                    
                     memcpy(
                         &chunk->vertex_positions[vertex_index*3],
                         block_positions,

code/source-c/state.h

@@ -43,8 +43,10 @@ typedef struct
 
 extern techneck_s       tc_game_state_g;
 
-techneck_s              tc_init         ();
-void                    tc_cleanup      ();
+void                    tc_init             ();
+void                    tc_cleanup          ();
+
+void                    tc_load_textures    ();
 
 #endif
 

code/source-c/world.c

@@ -100,7 +100,9 @@ tc_chunk_s * tc_new_chunk(tc_world_s *world, float x, float y, float z)
     chunk->position.y           = y;
     chunk->position.z           = z;
     world->worldgen->fn_generate_chunk(world->worldgen, chunk);
+    puts("Meshizing"); fflush(stdout);
     tc_meshize_chunk(chunk);
+    puts("Meshized"); fflush(stdout);
     
     glGenVertexArrays(1, &chunk->vao);
     glBindVertexArray(chunk->vao);

code/source-c/world.h

@@ -56,7 +56,7 @@ struct tc_world
 tc_world_s          tc_init_worlds          ();
 void                tc_draw_world           (tc_world_s *world);
 
-tc_chunk_s *        tc_new_chunk            (tc_world_s *world, float x, float y, float z);
+tc_chunk_s *        tc_new_chunk            (tc_world_s *world, float x, float y, float z); // must be integers
 
 void tc_set_block_in_chunk(
     tc_chunk_s *chunk,

vertex_shader.glsl

@@ -12,6 +12,7 @@ uniform mat4 model_matrix;
 void main() {
     
     gl_Position = projection_matrix * view_matrix * model_matrix * vec4(pos, 1.0);
+    
     uv_coords = uv;
 }