finalize packing changes

code/apps/client/CMakeLists.txt

@@ -6,7 +6,6 @@ add_library(client-common STATIC
     source/game.c
     source/main.c
 	source/camera.c
-	source/entity_view.c
 	source/world_view.c
   
     source/utils/options.c

code/apps/client/header/world_view.h

@@ -7,6 +7,13 @@ typedef struct {
     uint64_t owner_id;
     entity_view_tbl entities;
     librg_world *tracker;
+    
+    uint32_t size;
+    uint32_t width;
+    uint32_t height;
+    uint16_t block_size;
+    uint16_t chunk_size;
+    uint16_t world_size;
 } world_view;
 
 world_view world_view_create(void);

code/apps/client/source/platform_raylib.c

@@ -39,7 +39,6 @@ void platform_render() {
     BeginDrawing();
     ClearBackground(BLACK);
     BeginMode2D(render_camera);
-    DrawRectangleV((Vector2){0,0}, (Vector2){40,40}, RED);
     entity_view_map(&game_world_view_get_active()->entities, DEBUG_draw_entities);
     EndMode2D();
     display_conn_status();
@@ -59,5 +58,13 @@ void display_conn_status() {
 }
 
 void DEBUG_draw_entities(uint64_t key, entity_view data) {
-    DrawCircle(data.x, data.y, 15.0f, RAYWHITE);
+    world_view *view = game_world_view_get_active();
+    
+    switch (data.kind) {
+        case EKIND_PLAYER: {
+            DrawCircle(data.x-8.0f, data.y-8.0f, 16.0f, RED);
+        }break;
+        
+        default:break;
+    }
 }

code/apps/client/source/world_view.c

@@ -1,17 +1,6 @@
 #include "world_view.h"
 #include "librg.h"
 
-int32_t tracker_read_create(librg_world *w, librg_event *e) {
-    int64_t owner_id = librg_event_owner_get(w, e);
-    int64_t entity_id = librg_event_entity_get(w, e);
-    zpl_printf("[INFO] An entity %d was created for owner: %d\n", (int)entity_id, (int)owner_id);
-    world_view *view = (world_view*)librg_world_userdata_get(w);
-    
-    // TODO(zaklaus): receive real data
-    entity_view_update_or_create(&view->entities, entity_id, (entity_view){0});
-    return 0;
-}
-
 int32_t tracker_read_remove(librg_world *w, librg_event *e) {
     int64_t owner_id = librg_event_owner_get(w, e);
     int64_t entity_id = librg_event_entity_get(w, e);
@@ -26,8 +15,23 @@ int32_t tracker_read_update(librg_world *w, librg_event *e) {
     int64_t entity_id = librg_event_entity_get(w, e);
     size_t actual_length = librg_event_size_get(w, e);
     char *buffer = librg_event_buffer_get(w, e);
+    world_view *view = (world_view*)librg_world_userdata_get(w);
     
-    // TODO(zaklaus): update real data
+    entity_view data = entity_view_unpack_struct(buffer, actual_length);
+    entity_view_update_or_create(&view->entities, entity_id, data);
+    return 0;
+}
+
+int32_t tracker_read_create(librg_world *w, librg_event *e) {
+    int64_t owner_id = librg_event_owner_get(w, e);
+    int64_t entity_id = librg_event_entity_get(w, e);
+    zpl_printf("[INFO] An entity %d was created for owner: %d\n", (int)entity_id, (int)owner_id);
+    size_t actual_length = librg_event_size_get(w, e);
+    char *buffer = librg_event_buffer_get(w, e);
+    world_view *view = (world_view*)librg_world_userdata_get(w);
+    
+    entity_view data = entity_view_unpack_struct(buffer, actual_length);
+    entity_view_update_or_create(&view->entities, entity_id, data);
     return 0;
 }
 
@@ -40,6 +44,14 @@ world_view world_view_create(void) {
 
 void world_view_init(world_view *view, uint64_t ent_id, uint16_t block_size, uint16_t chunk_size, uint16_t world_size) {
     view->owner_id = ent_id;
+    view->chunk_size = chunk_size;
+    view->world_size = world_size;
+    
+    view->width = chunk_size * world_size;
+    view->height = chunk_size * world_size;
+    view->block_size = block_size;
+    view->size = view->width * view->height;
+    
     librg_config_chunksize_set(view->tracker, block_size * chunk_size, block_size * chunk_size, 1);
     librg_config_chunkamount_set(view->tracker, world_size, world_size, 1);
     librg_config_chunkoffset_set(view->tracker, LIBRG_OFFSET_MID, LIBRG_OFFSET_MID, 0);

code/common/entity_view.c

@@ -4,22 +4,24 @@
 ZPL_TABLE_DEFINE(entity_view_tbl, entity_view_tbl_, entity_view);
 
 pkt_desc pkt_entity_view_desc[] = {
+    { PKT_UINT(entity_view, kind) },
     { PKT_REAL(entity_view, x) },
     { PKT_REAL(entity_view, y) },
     { PKT_END }, 
 };
 
-void entity_view_pack_struct(void *data, size_t len, entity_view view) {
+size_t entity_view_pack_struct(void *data, size_t len, entity_view view) {
     cw_pack_context pc = {0};
     cw_pack_context_init(&pc, data, len, 0);
     pkt_pack_struct(&pc, pkt_entity_view_desc, PKT_STRUCT_PTR(&view));
+    return pc.current - pc.start;
 }
 
 entity_view entity_view_unpack_struct(void *data, size_t len) {
     cw_unpack_context uc = {0};
     cw_unpack_context_init(&uc, data, len, 0);
     
-    entity_view view;
+    entity_view view = {0};
     pkt_unpack_struct(&uc, pkt_entity_view_desc, PKT_STRUCT_PTR(&view));
     return view;
 }

code/common/entity_view.h

@@ -6,7 +6,14 @@
 
 #include "packet_utils.h"
 
+typedef enum {
+    EKIND_PLAYER,
+    EKIND_CHUNK,
+    FORCE_EKIND_UINT16 = UINT16_MAX
+} entity_kind;
+
 typedef struct entity_view {
+    entity_kind kind;
     double x;
     double y;
 } entity_view;
@@ -24,5 +31,5 @@ void entity_view_destroy(entity_view_tbl *map, uint64_t ent_id);
 entity_view *entity_view_get(entity_view_tbl *map, uint64_t ent_id);
 void entity_view_map(entity_view_tbl *map, void (*map_proc)(uint64_t key, entity_view value));
 
-void entity_view_pack_struct(void *data, size_t len, entity_view view);
+size_t entity_view_pack_struct(void *data, size_t len, entity_view view);
 entity_view entity_view_unpack_struct(void *data, size_t len);

code/common/packet.c

@@ -66,9 +66,15 @@ int32_t pkt_unpack_struct(cw_unpack_context *uc, pkt_desc *desc, void *raw_blob,
         if (uc->item.type != field->type) return -1; // unexpected field
         if (blob + field->offset + field->size > blob + blob_size) return -1; // field does not fit
         switch (field->type) {
-            case CWP_ITEM_NEGATIVE_INTEGER:
-            case CWP_ITEM_DOUBLE:
-            case CWP_ITEM_FLOAT:
+            case CWP_ITEM_DOUBLE: {
+                zpl_memcopy(blob + field->offset, (uint8_t*)&uc->item.as.long_real, field->size);
+            }break;
+            case CWP_ITEM_FLOAT: {
+                zpl_memcopy(blob + field->offset, (uint8_t*)&uc->item.as.real, field->size);
+            } break;
+            case CWP_ITEM_NEGATIVE_INTEGER: {
+                zpl_memcopy(blob + field->offset, (uint8_t*)&uc->item.as.i64, field->size);
+            }break;
             case CWP_ITEM_POSITIVE_INTEGER: {
                 zpl_memcopy(blob + field->offset, (uint8_t*)&uc->item.as.u64, field->size);
             }break;

code/common/packets/pkt_00_init.c

@@ -31,7 +31,7 @@ int32_t pkt_00_init_handler(pkt_header *header) {
     PKT_IF(pkt_msg_decode(header, pkt_00_init_desc, pkt_pack_desc_args(pkt_00_init_desc), PKT_STRUCT_PTR(&table)));
     
     uint64_t peer_id = (uint64_t)header->udata;
-    uint64_t ent_id = player_spawn(zpl_bprintf("client_%d", peer_id));
+    uint64_t ent_id = player_spawn(NULL);
     ecs_set(world_ecs(), ent_id, ClientInfo, {.peer = ent_id, .view_id = header->view_id });
     pkt_01_welcome_send(peer_id, header->view_id, ent_id, world_block_size(), world_chunk_size(), world_world_size());
     return 0;

code/common/player.c

@@ -7,6 +7,7 @@
 #include "modules/general.h"
 #include "modules/controllers.h"
 #include "modules/net.h"
+#include "zpl.h"
 
 uint64_t player_spawn(char *name) {
     ECS_IMPORT(world_ecs(), General);
@@ -15,6 +16,10 @@ uint64_t player_spawn(char *name) {
 
     ecs_entity_t e = ecs_new(world_ecs(), 0);
     
+    if (!name) {
+        name = zpl_bprintf("player_%d", e);
+    }
+
     ecs_add(world_ecs(), e, EcsClient);
     ecs_set(world_ecs(), e, ClientInfo, {0});
     ecs_set(world_ecs(), e, EcsName, {.alloc_value = name });

code/common/world/world.c

@@ -34,9 +34,20 @@ entity_view world_build_entity_view(int64_t e) {
     ECS_IMPORT(world_ecs(), General);
     entity_view view = {0};
     
-    Position *pos = ecs_get(world_ecs(), e, Position);
+    // TODO(zaklaus): branch out based on ECS tags
+    const Position *pos = ecs_get(world_ecs(), e, Position);
+    if (pos) {
+        view.kind = EKIND_PLAYER;
         view.x = pos->x;
         view.y = pos->y;
+    }
+    
+    const Chunk *chpos = ecs_get(world_ecs(), e, Chunk);
+    if (chpos) {
+        view.kind = EKIND_CHUNK;
+        view.x = chpos->x;
+        view.y = chpos->y;
+    }
     
     return view;
 }
@@ -47,9 +58,7 @@ int32_t tracker_write_create(librg_world *w, librg_event *e) {
     size_t actual_length = librg_event_size_get(w, e);
     char *buffer = librg_event_buffer_get(w, e);
     
-    entity_view_pack_struct(buffer, actual_length, world_build_entity_view(entity_id));
-    
-    return 0;
+    return entity_view_pack_struct(buffer, actual_length, world_build_entity_view(entity_id));
 }
 
 int32_t tracker_write_remove(librg_world *w, librg_event *e) {
@@ -61,9 +70,7 @@ int32_t tracker_write_update(librg_world *w, librg_event *e) {
     size_t actual_length = librg_event_size_get(w, e);
     char *buffer = librg_event_buffer_get(w, e);
     
-    entity_view_pack_struct(buffer, actual_length, world_build_entity_view(entity_id));
-    
-    return 0;
+    return entity_view_pack_struct(buffer, actual_length, world_build_entity_view(entity_id));
 }
 
 void world_setup_pkt_handlers(world_pkt_reader_proc *reader_proc, world_pkt_writer_proc *writer_proc) {
@@ -140,6 +147,8 @@ int32_t world_destroy(void) {
     return WORLD_ERROR_NONE;
 }
 
+#define WORLD_LIBRG_BUFSIZ 8192
+
 static void world_tracker_update(void) {
     if (world.tracker_update > zpl_time_rel_ms()) return;
         world.tracker_update = zpl_time_rel_ms() + WORLD_TRACKER_UPDATE_MS;
@@ -148,13 +157,13 @@ static void world_tracker_update(void) {
     ecs_query_t *query = ecs_query_new(world.ecs, "Net.ClientInfo");
     
     ecs_iter_t it = ecs_query_iter(query);
-    char buffer[8096] = {0};
+    static char buffer[WORLD_LIBRG_BUFSIZ] = {0};
     
     while (ecs_query_next(&it)) {
         ClientInfo *p = ecs_column(&it, ClientInfo, 1);
         
         for (int i = 0; i < it.count; i++) {
-            size_t datalen = 8096;
+            size_t datalen = WORLD_LIBRG_BUFSIZ;
             int32_t result = librg_world_write(world_tracker(), p[i].peer, buffer, &datalen, NULL);
             
             if (result > 0) {

code/modules/source/general.c

@@ -4,10 +4,9 @@ void GeneralImport(ecs_world_t *ecs) {
     ECS_MODULE(ecs, General);
     ecs_set_name_prefix(ecs, "General");
 
-    ECS_COMPONENT(ecs, Position);
-
     ECS_IMPORT(ecs, FlecsMeta);
 
+    ECS_META(ecs, Position);
     ECS_META(ecs, Chunk);
     ECS_META(ecs, Vector2D);
     ECS_META(ecs, Drawable);