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Added buggy chunk loading

This commit is contained in:
Eric-Paul Ickhorn 2023-10-13 08:00:53 +02:00
parent 165d54ab37
commit a85b70e2c5
9 changed files with 235 additions and 352 deletions
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178
code/source-c/chunk_loader.c Normal file
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@ -0,0 +1,178 @@
#include "world.h"
#include <stdlib.h>
#include <stdio.h>
void tc_on_each_chunkloader(tc_world_s *world, bool (*fn_do)(tc_chunkloader_s *loader, void *userdata), void *userdata)
{
for(uint32_t loader_index = 0; loader_index < world->num_loaders; ++loader_index)
if(fn_do(&world->loaders[loader_index], userdata)) return;
}
void tc_on_each_loaded_chunk(tc_world_s *world, bool (*fn_do)(tc_chunk_s *chunk, void *userdata), void *userdata)
{
for(uint32_t loader_index = 0; loader_index < world->num_loaders; ++loader_index)
for(uint32_t chunk_index = 0; chunk_index < world->loaders[loader_index].num_chunks; ++chunk_index)
if(fn_do(world->loaders[loader_index].chunks[chunk_index], userdata)) return;
}
void tc_on_each_chunk_of_loader(tc_chunkloader_s *loader, bool (*fn_do)(tc_chunk_s *chunk, void *userdata), void *userdata)
{
uint32_t chunk_index = 0;
while(chunk_index < loader->num_chunks)
{
if(fn_do(loader->chunks[chunk_index], userdata)) return;
++chunk_index;
}
}
bool tc_coord_is_within_loaders_range(tc_chunkloader_s *loader, tc_vec3i_s coord)
{
if(coord.x < (loader->center.x - loader->extent.x / 2)) return false;
if(coord.y < (loader->center.y - loader->extent.y / 2)) return false;
if(coord.z < (loader->center.z - loader->extent.z / 2)) return false;
if(coord.x > (loader->center.x + loader->extent.x / 2)) return false;
if(coord.y > (loader->center.y + loader->extent.y / 2)) return false;
if(coord.z > (loader->center.z + loader->extent.z / 2)) return false;
return true;
}
tc_chunkloader_s * tc_get_corresponding_loader(tc_world_s *world, tc_vec3i_s coord)
{
for(uint32_t loader_index = 0; loader_index < world->num_loaders; ++loader_index)
if(tc_coord_is_within_loaders_range(&world->loaders[loader_index], coord))
return &world->loaders[loader_index];
return NULL;
}
tc_chunk_s * tc_get_chunk_of_loader(tc_chunkloader_s *loader, tc_vec3i_s coord)
{
for(uint32_t chunk_index = 0; chunk_index < loader->num_chunks; ++chunk_index)
if(tc_vec3i_equ(loader->chunks[chunk_index]->position, coord))
return loader->chunks[chunk_index];
return NULL;
}
tc_chunk_s * tc_get_loaded_chunk(tc_world_s *world, tc_vec3i_s coord)
{
tc_chunkloader_s *loader = tc_get_corresponding_loader(world, coord);
if(loader == NULL) return NULL;
return tc_get_chunk_of_loader(loader, coord);
}
tc_chunk_s * tc_load_chunk_of_loader(tc_chunkloader_s *loader, tc_vec3i_s coord)
{
tc_chunk_s *chunk = tc_get_chunk_of_loader(loader, coord);
if(chunk == NULL)
{
printf("Creating chunk at: %d %d %d\n", coord.x, coord.y, coord.z);
chunk = tc_allocate_chunk(loader->world);
chunk->position = coord;
loader->world->worldgen->fn_generate_chunk(loader->world->worldgen, chunk);
tc_upload_chunk(chunk);
tc_add_chunk_to_loader(loader, chunk);
}
return chunk;
}
void tc_reload_chunk_of_loader(tc_chunkloader_s *loader, tc_vec3i_s coord)
{
tc_chunk_s *chunk = tc_get_chunk_of_loader(loader, coord);
if(chunk == NULL) return;
tc_meshize_chunk(chunk);
tc_upload_chunk(chunk);
}
void tc_reload_chunk(tc_world_s *world, tc_vec3i_s coord)
{
tc_chunkloader_s *loader = tc_get_corresponding_loader(world, coord);
if(loader == NULL) return;
tc_reload_chunk_of_loader(loader, coord);
}
void tc_remove_loaders_chunk(tc_chunkloader_s *loader, uint32_t index)
{
tc_free_chunk(loader->world, loader->chunks[index]);
// This is is NOT last element
if((index+1) < loader->num_chunks)
{
loader->chunks[index] = loader->chunks[loader->num_chunks-1]; // move last chunk into gap
}
--loader->num_chunks;
}
void tc_remove_unnecessary_chunks_of_loader(tc_chunkloader_s *loader)
{
for(uint32_t chunk_index = 0; chunk_index < loader->num_chunks; ++chunk_index)
{
tc_chunk_s *chunk = loader->chunks[chunk_index];
if(!tc_coord_is_within_loaders_range(loader, chunk->position))
{
printf("Chunk at %d %d %d isn't in range\n", chunk->position.x, chunk->position.y, chunk->position.z);
tc_remove_loaders_chunk(loader, chunk_index);
}
}
}
void tc_load_all_chunks_of_chunkloader(tc_chunkloader_s *loader)
{
for(uint32_t x = 0; x < loader->extent.x; ++x)
{
for(uint32_t y = 0; y < loader->extent.y; ++y)
{
for(uint32_t z = 0; z < loader->extent.z; ++z)
{
tc_vec3i_s coords;
/*
coords.x = ((x + loader->center.x) - (loader->extent.x / 2)) + loader->extent.x;
coords.y = ((y + loader->center.y) - (loader->extent.y / 2)) + loader->extent.y;
coords.z = ((z + loader->center.z) - (loader->extent.z / 2)) + loader->extent.z;
*/
coords.x = loader->center.x + (x - (loader->extent.x / 2));
coords.y = loader->center.y + (y - (loader->extent.y / 2));
coords.z = loader->center.z + (z - (loader->extent.z / 2));
tc_load_chunk_of_loader(loader, coords);
}
}
}
}
void tc_reload_chunkloader_zone(tc_chunkloader_s *loader)
{
tc_remove_unnecessary_chunks_of_loader(loader);
tc_load_all_chunks_of_chunkloader(loader);
}
void tc_update_world(tc_world_s *world)
{
world->loaders[0].center.x = world->loading_center.x;
world->loaders[0].center.y = world->loading_center.y;
world->loaders[0].center.z = world->loading_center.z;
uint32_t chunkloader_index = 0;
while(chunkloader_index < world->num_loaders)
{
if(world->loaders[chunkloader_index].needs_reload)
{
tc_reload_chunkloader_zone(&world->loaders[chunkloader_index]);
}
++chunkloader_index;
}
}
// TODO: Set center chunk

324
code/source-c/chunk_loading.c
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@ -1,324 +0,0 @@
#include "world.h"
#include <stdlib.h>
#include <stdio.h>
void tc_on_each_chunkloader(tc_world_s *world, bool (*fn_do)(tc_chunkloader_s *loader, void *userdata), void *userdata)
{
for(uint32_t loader_index = 0; loader_index < world->num_loaders; ++loader_index)
if(fn_do(&world->loaders[loader_index], userdata)) return;
}
void tc_on_each_loaded_chunk(tc_world_s *world, bool (*fn_do)(tc_chunk_s *chunk, void *userdata), void *userdata)
{
for(uint32_t loader_index = 0; loader_index < world->num_loaders; ++loader_index)
for(uint32_t chunk_index = 0; chunk_index < world->loaders[loader_index].num_chunks; ++chunk_index)
if(fn_do(world->loaders[loader_index].chunks[chunk_index], userdata)) return;
}
void tc_on_each_chunk_of_loader(tc_chunkloader_s *loader, bool (*fn_do)(tc_chunk_s *chunk, void *userdata), void *userdata)
{
uint32_t chunk_index = 0;
while(chunk_index < loader->num_chunks)
{
if(fn_do(loader->chunks[chunk_index], userdata)) return;
++chunk_index;
}
}
// TODO: Create and use vectors
typedef struct tc_chunk_grid_distance
{
int32_t x;
int32_t y;
int32_t z;
} tc_chunk_grid_distance_s;
tc_chunk_grid_distance_s tc_chunk_distance_to(
int32_t first_x, int32_t first_y, int32_t first_z,
int32_t last_x, int32_t last_y, int32_t last_z
) {
tc_chunk_grid_distance_s distance;
distance.x = last_x - first_x;
distance.y = last_y - first_y;
distance.z = last_z - first_z;
return distance;
}
bool tc_chunk_coordinate_is_within_loaded_zone(tc_world_s *world, int32_t x, int32_t y, int32_t z)
{
if((world->loading_center.x + world->load_radius) < x) return false;
if((world->loading_center.y + world->load_radius) < y) return false;
if((world->loading_center.z + world->load_radius) < z) return false;
if((world->loading_center.x - world->load_radius) > x) return false;
if((world->loading_center.y - world->load_radius) > y) return false;
if((world->loading_center.z - world->load_radius) > z) return false;
return true;
}
bool tc_chunk_exists(tc_world_s *world, int32_t x, int32_t y, int32_t z)
{
uint32_t loader_index = 0;
while(loader_index < world->num_loaders)
{
tc_chunkloader_s *loader = &world->loaders[loader_index];
for(uint32_t chunk_index = 0; chunk_index < loader->num_chunks; ++chunk_index)
{
tc_chunk_s *chunk = loader->chunks[chunk_index];
if(chunk->position.x != x) continue;
if(chunk->position.y != y) continue;
if(chunk->position.z != z) continue;
return true;
}
++loader_index;
}
return false;
}
bool tc_chunk_is_loaded(tc_world_s *world, int32_t x, int32_t y, int32_t z)
{
// TODO: Further checks
if(!tc_chunk_coordinate_is_within_loaded_zone(world, x, y, z)) return false;
if(!tc_chunk_exists(world, x, y, z)) return false;
printf("Checked for a chunk at %d:%d:%d and found it!\n", x, y, z);
return true;
}
bool tc_check_chunk_coordinate_equality_for_getting_a_loaded_chunk(tc_chunk_s *chunk, void *userdata)
{
struct payload {
int32_t x;
int32_t y;
int32_t z;
tc_chunk_s *result;
} *payload = userdata;
if(chunk->position.x != payload->x) return false;
if(chunk->position.y != payload->y) return false;
if(chunk->position.z != payload->z) return false;
payload->result = chunk;
return true;
}
tc_chunk_s * tc_get_loaded_chunk_at(tc_world_s *world, int32_t x, int32_t y, int32_t z)
{
struct payload {
int32_t x;
int32_t y;
int32_t z;
tc_chunk_s *result;
} payload;
payload.x = x;
payload.y = y;
payload.z = z;
payload.result = NULL;
tc_on_each_loaded_chunk(world, &tc_check_chunk_coordinate_equality_for_getting_a_loaded_chunk, &payload);
return payload.result;
}
/*
tc_chunk_s *chunk = tc_chunk_at_south_east_bottom(world);
tc_chunk_grid_distance_s distance = tc_chunk_distance_to(
chunk->position.x, chunk->position.y, chunk->position.z,
x, y, z
);
while(distance.x > 0)
{
chunk = chunk->east;
--distance.x;
}
while(distance.y > 0)
{
chunk = chunk->top;
--distance.y;
}
while(distance.z > 0)
{
chunk = chunk->north;
--distance.z;
}
return chunk;
void tc_reassociate_surrounding_chunks(tc_chunk_s *old_chunk, tc_chunk_s *chunk)
{
if(old_chunk->top != NULL) old_chunk->top->bottom = chunk;
if(old_chunk->bottom != NULL) old_chunk->bottom->top = chunk;
if(old_chunk->east != NULL) old_chunk->east->west = chunk;
if(old_chunk->west != NULL) old_chunk->west->east = chunk;
if(old_chunk->north != NULL) old_chunk->north->south = chunk;
if(old_chunk->south != NULL) old_chunk->south->north = chunk;
}
*/
void tc_place_chunk_at(tc_world_s *world, tc_chunk_s *chunk, int32_t x, int32_t y, int32_t z)
{
tc_chunk_s *old_chunk = tc_get_loaded_chunk_at(world, x, y, z);
// tc_reassociate_surrounding_chunks(old_chunk, chunk);
tc_free_chunk(world, old_chunk);
}
tc_chunk_s * tc_create_chunk_at(tc_world_s *world, int32_t x, int32_t y, int32_t z)
{
tc_chunk_s *chunk = tc_allocate_chunk(world);
chunk->position.x = x;
chunk->position.y = y;
chunk->position.z = z;
world->worldgen->fn_generate_chunk(world->worldgen, chunk);
tc_upload_chunk(chunk);
tc_place_chunk_at(world, chunk, x, y, z);
return chunk;
}
tc_chunk_s * tc_load_chunk_at(tc_world_s *world, int32_t x, int32_t y, int32_t z)
{
if(!tc_chunk_is_loaded(world, x, y, z))
{
return tc_create_chunk_at(world, x, y, z);
}
return tc_get_loaded_chunk_at(world, x, y, z);
}
// Creates & Generates a chunk and provides a pointer to it
tc_chunk_s * tc_new_chunk(tc_world_s *world, int32_t x, int32_t y, int32_t z)
{
tc_chunk_s *chunk = tc_allocate_chunk(world);
chunk->position.x = x;
chunk->position.y = y;
chunk->position.z = z;
world->worldgen->fn_generate_chunk(world->worldgen, chunk);
return chunk;
}
/*c_
void tc_shift_chunks_on_axis_x(tc_world_s *world, int32_t difference)
{
}
void tc_shift_chunks_on_axis_y(tc_world_s *world, int32_t difference)
{
}
// Go one further west with loading
void tc_shift_loading_one_west(tc_world_s *world)
{
tc_chunk_s *north_eastern = world->center_chunk;
while(north_eastern->east != NULL) north_eastern = north_eastern->east;
while(north_eastern->north != NULL) north_eastern = north_eastern->north;
tc_chunk_s *north_western = world->center_chunk;
while(north_western->west != NULL) north_western = north_western->west;
while(north_western->north != NULL) north_western = north_western->north;
tc_chunk_s *eastern_edge = north_eastern;
while((eastern_edge != NULL) && (western_edge != NULL))
{
eastern_west = western_edge;
eastern_edge = eastern_edge->south;
western_edge = western_edge->south;
}
// Load new row
while(north_eastern != NULL)
{
north_
north_eastern = north_eastern->south;
}
tc_load_chunk();
}
void tc_shift_chunks_on_axis_z(tc_world_s *world, int32_t difference)
{
if(difference > 0)
{
for(; difference > 0; --difference)
tc_shift_one_west(world);
}
if(difference < 0)
{
for(; difference < 0; ++difference)
tc_shift_one_east(world);
}
}
*/
tc_chunk_s * tc_reload_chunk_of_loader(tc_chunkloader_s *loader, int32_t x, int32_t y, int32_t z)
{
}
void tc_reload_chunkloader_zone(tc_world_s *world, tc_chunkloader_s *chunkloader)
{
int32_t last_x = chunkloader->center_x + chunkloader->width;
int32_t last_y = chunkloader->center_y + chunkloader->height;
int32_t last_z = chunkloader->center_z + chunkloader->depth;
int32_t chunk_x = chunkloader->center_x - chunkloader->width;
while(chunk_x < last_x)
{
int32_t chunk_y = chunkloader->center_y - chunkloader->height;
while(chunk_y < last_y)
{
int32_t chunk_z = chunkloader->center_z - chunkloader->depth;
while(chunk_z < last_z)
{
tc_chunk_s *chunk = tc_get_loaded_chunk_at(world, chunk_x, chunk_y, chunk_z);
if(chunk == NULL)
{
chunk = tc_allocate_chunk(world);
chunk->position.x = chunk_x;
chunk->position.y = chunk_y;
chunk->position.z = chunk_z;
tc_add_chunk_to_loader(chunkloader, world);
}
++chunk_z;
}
++chunk_y;
}
++chunk_x;
}
}
void tc_update_world(tc_world_s *world)
{
uint32_t chunkloader_index = 0;
while(chunkloader_index < world->num_loaders)
{
if(world->loaders[chunkloader_index].needs_reload)
{
tc_reload_chunkloader_zone(world, &world->loaders[chunkloader_index]);
}
++chunkloader_index;
}
}
// TODO: Set center chunk

12
code/source-c/chunk_pool.c
View File

@ -54,6 +54,18 @@ void tc_free_chunk(tc_world_s *world, tc_chunk_s *chunk)
{
tc_chunk_pool_s *pool = world->pool;
if(chunk->vao != 0) glDeleteVertexArrays(1, &chunk->vertex_data);
chunk->vao = 0;
if(chunk->vertex_data != 0) glDeleteBuffers(1, &chunk->vertex_data);
chunk->vertex_data = 0;
if(chunk->vertex_positions != NULL) free(chunk->vertex_positions);
chunk->vertex_positions = NULL;
if(chunk->vertex_uvs != NULL) free(chunk->vertex_uvs);
chunk->vertex_uvs = NULL;
chunk->superstructure->next = pool->first_free;
pool->first_free = chunk->superstructure;
}

2
code/source-c/default_terrain_generator.c
View File

@ -8,6 +8,8 @@ bool tc_generate_default_terrain_chunk(tc_worldgen_s *gen, tc_chunk_s *chunk)
block.position.y = 0.0f;
block.position.z = 0.0f;
if(chunk->position.y > 0) return true;
uint32_t x_in_chunk = 0;
uint32_t y_in_chunk = 0;
uint32_t z_in_chunk = 0;

8
code/source-c/main.c
View File

@ -293,9 +293,9 @@ bool update()
tc_camera_rotation.y += 0.1f / (3.1415 * 2);
}
tc_game_state_g.main_world->loading_center.x = tc_camera_position.x / 32.0f;
tc_game_state_g.main_world->loading_center.y = tc_camera_position.y / 32.0f;
tc_game_state_g.main_world->loading_center.z = tc_camera_position.z / 32.0f;
tc_game_state_g.main_world->loading_center.x = ((int32_t) tc_camera_position.x) / 32;
tc_game_state_g.main_world->loading_center.y = ((int32_t) tc_camera_position.y) / 32;
tc_game_state_g.main_world->loading_center.z = ((int32_t) tc_camera_position.z) / 32;
tc_update_world(tc_game_state_g.main_world);
@ -305,7 +305,7 @@ bool update()
int main(int argc, char **argv)
{
tc_init();
tc_new_chunk(tc_game_state_g.main_world, 1.0f, 1.0f, 1.0f);
// tc_new_chunk(tc_game_state_g.main_world, 1.0f, 1.0f, 1.0f);
block = tc_new_block_at_3f(0.0, 0.0, 0.0);

15
code/source-c/utility.h
View File

@ -1,7 +1,10 @@
#ifndef TC_UTILITY_H
#ifndef TC_UTILITY_H
#define TC_UTILITY_H
#include <stdint.h>
#include <stdbool.h>
typedef struct tc_vec3
{
float x;
@ -10,6 +13,16 @@ typedef struct tc_vec3
} tc_vec3_s;
typedef struct tc_vec3i
{
int32_t x;
int32_t y;
int32_t z;
} tc_vec3i_s;
bool tc_vec3i_equ(tc_vec3i_s first, tc_vec3i_s second);
typedef struct tc_object
{
uint32_t vbo;

9
code/source-c/vector.c Normal file
View File

@ -0,0 +1,9 @@
#include "utility.h"
bool tc_vec3i_equ(tc_vec3i_s first, tc_vec3i_s second)
{
if(first.x != second.x) return false;
if(first.y != second.y) return false;
if(first.z != second.z) return false;
return true;
}

20
code/source-c/world.c
View File

@ -15,6 +15,9 @@ void tc_upload_chunk(tc_chunk_s *chunk)
tc_meshize_chunk(chunk);
}
if(chunk->vao != 0) glDeleteVertexArrays(1, &chunk->vao);
if(chunk->vertex_data != 0) glDeleteBuffers(1, &chunk->vertex_data);
glGenVertexArrays(1, &chunk->vao);
glBindVertexArray(chunk->vao);
@ -40,7 +43,7 @@ void tc_draw_chunk(tc_chunk_s *chunk, tc_world_s *world)
mat4x4_translate_in_place(model_matrix, chunk->position.x*32, chunk->position.y*32, -chunk->position.z*32);
int model_matrix_uniform_location =
glGetUniformLocation(tc_game_state_g.renderer.draw_shader.program_id, "model_matrix");
glGetUniformLocation(tc_game_state_g.renderer.draw_shader.program_id, "model_matrix");
glUniformMatrix4fv(model_matrix_uniform_location, 1, GL_FALSE, &model_matrix[0][0]);
// glBindVertexArray(chunk->vao);
@ -115,12 +118,12 @@ void tc_setup_terrain(tc_world_s *world)
tc_chunkloader_s tc_create_chunkloader(tc_world_s *world)
{
tc_chunkloader_s loader;
loader.width = world->load_radius * 2 + 1;
loader.height = world->load_radius * 2 + 1;
loader.depth = world->load_radius * 2 + 1;
loader.center_x = 0;
loader.center_y = 0;
loader.center_z = 0;
loader.extent.x = world->load_radius * 2 + 1;
loader.extent.y = world->load_radius * 2 + 1;
loader.extent.z = world->load_radius * 2 + 1;
loader.center.x = 0;
loader.center.y = 0;
loader.center.z = 0;
loader.chunks_capacity = 512;
loader.chunks = calloc(sizeof(tc_chunk_s *), loader.chunks_capacity);
loader.num_chunks = 0;
@ -144,6 +147,7 @@ tc_chunkloader_s tc_create_spawn_loader(tc_world_s *world)
{
tc_chunkloader_s loader = tc_create_chunkloader(world);
loader.needs_reload = true;
loader.world = world;
return loader;
}
@ -154,7 +158,7 @@ tc_world_s * tc_new_world(tc_worldgen_s *generator)
world->pool = tc_new_chunk_pool(128);
world->worldgen = &tc_default_terrain_generator_g;
// world->center_chunk = tc_new_chunk(world, 0, 0, 0);
world->load_radius = 3;
world->load_radius = 1;
world->num_loaders = 1;
world->loaders = malloc(sizeof(tc_chunkloader_s) * world->num_loaders);
world->loaders[0] = tc_create_spawn_loader(world);

19
code/source-c/world.h
View File

@ -36,7 +36,7 @@ struct tc_chunk
{
tc_chunk_pool_entry_s *superstructure;
tc_vec3_s position;
tc_vec3i_s position;
uint32_t blocks[32][32][32];
uint32_t num_vertices;
@ -45,13 +45,6 @@ struct tc_chunk
uint32_t vao;
uint32_t vertex_data;
tc_chunk_s *top;
tc_chunk_s *bottom;
tc_chunk_s *north;
tc_chunk_s *south;
tc_chunk_s *east;
tc_chunk_s *west;
};
struct tc_chunk_pool_entry
@ -64,17 +57,13 @@ struct tc_chunk_pool_entry
typedef struct tc_chunkloader
{
uint32_t center_x;
uint32_t center_y;
uint32_t center_z;
uint32_t width;
uint32_t height;
uint32_t depth;
tc_vec3i_s center;
tc_vec3i_s extent;
uint32_t chunks_capacity;
uint32_t num_chunks;
tc_chunk_s **chunks;
tc_world_s *world;
bool needs_reload;