From b6b632899d3e52b4771f50c1f012899ce5ae6c3a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dominik=20Madar=C3=A1sz?= <zaklaus@outlook.com>
Date: Tue, 27 Sep 2022 13:55:24 +0000
Subject: [PATCH] all storage systems are dynamic now

---
 code/foundation/CMakeLists.txt                |  1 -
 code/foundation/src/core/game.c               | 55 +++++++++------
 code/foundation/src/ents/entity.c             | 13 +++-
 code/foundation/src/ents/entity.h             | 10 +++
 code/foundation/src/ents/entity_spawnlist.c   | 11 ++-
 code/foundation/src/ents/items.c              | 23 +++++--
 code/foundation/src/ents/items.h              |  4 ++
 code/foundation/src/ents/items_list.c         | 32 +++++----
 code/foundation/src/ents/items_list_helpers.h | 10 +--
 code/foundation/src/gen/assets.c              | 68 +++++++++++--------
 code/foundation/src/gen/assets.h              | 40 ++++++++---
 code/foundation/src/gen/assets_list.c         | 60 +++++++---------
 code/foundation/src/renderers/renderer_3d.c   |  8 +--
 code/foundation/src/renderers/renderer_v0.c   |  8 +--
 code/foundation/src/world/blocks.c            | 36 +++++-----
 code/foundation/src/world/blocks.h            | 29 +++++++-
 code/foundation/src/world/blocks_list.c       | 39 +++++------
 code/foundation/src/world/entity_view.h       |  2 +-
 code/games/sandbox/CMakeLists.txt             |  1 +
 .../sandbox}/src/gui/build_mode.c             |  0
 .../sandbox}/src/gui/inventory.c              |  0
 .../sandbox/src/platform.c}                   |  2 +-
 22 files changed, 272 insertions(+), 180 deletions(-)
 rename code/{foundation => games/sandbox}/src/gui/build_mode.c (100%)
 rename code/{foundation => games/sandbox}/src/gui/inventory.c (100%)
 rename code/{foundation/src/platform/platform_raylib.c => games/sandbox/src/platform.c} (99%)

diff --git a/code/foundation/CMakeLists.txt b/code/foundation/CMakeLists.txt
index dcb07a4..6d0f8e9 100644
--- a/code/foundation/CMakeLists.txt
+++ b/code/foundation/CMakeLists.txt
@@ -4,7 +4,6 @@ add_library(eco2d-foundation STATIC
     src/core/game.c
     src/core/camera.c
 
-    src/platform/platform_raylib.c
     src/platform/signal_handling.c
     src/platform/profiler.c
 
diff --git a/code/foundation/src/core/game.c b/code/foundation/src/core/game.c
index 7fa5c4b..d00b5e5 100644
--- a/code/foundation/src/core/game.c
+++ b/code/foundation/src/core/game.c
@@ -6,6 +6,7 @@
 #include "platform/signal_handling.h"
 #include "net/network.h"
 #include "ents/entity.h"
+#include "ents/items.h"
 #include "world/world_view.h"
 #include "world/entity_view.h"
 #include "core/camera.h"
@@ -31,7 +32,7 @@ static WORLD_PKT_READER(pkt_reader) {
     pkt_header header = {0};
     uint32_t ok = pkt_header_decode(&header, data, datalen);
     header.udata = udata;
-    
+
     if (ok && header.ok) {
         return pkt_handlers[header.id].handler(&header) >= 0;
     } else {
@@ -66,7 +67,7 @@ static WORLD_PKT_WRITER(mp_cli_pkt_writer) {
 
 void world_viewers_init(uint32_t num_viewers) {
     zpl_buffer_init(world_viewers, zpl_heap(), num_viewers);
-    
+
     for (uint32_t i = 0; i < num_viewers; i++) {
         zpl_buffer_append(world_viewers, world_view_create(i));
     }
@@ -128,31 +129,39 @@ float game_time() {
 void game_init(const char *ip, uint16_t port, game_kind play_mode, uint32_t num_viewers, int32_t seed, uint16_t chunk_size, uint16_t chunk_amount, int8_t is_dash_enabled) {
     game_mode = play_mode;
     game_should_close = false;
-    
+
 #ifndef _DEBUG
     const char *host_ip = "lab.zakto.pw";
 #else
     const char *host_ip = "127.0.0.1";
 #endif
-    
+
     uint16_t host_port = (port > 0) ? port : 27000;
-    
+
     if (ip != NULL) {
         host_ip = ip;
     }
-    
+
+    // NOTE: initialise subsystems
+    {
+        assets_setup();
+        blocks_setup();
+        item_setup();
+        entity_spawndef_setup();
+    }
+
     if (game_mode != GAMEKIND_HEADLESS) {
         platform_init();
-        
+
         world_viewers_init(num_viewers);
         active_viewer = &world_viewers[0];
         camera_reset();
     }
-    
+
     if (game_mode != GAMEKIND_SINGLE) {
         network_init();
     }
-    
+
     if (game_mode == GAMEKIND_CLIENT) {
         world_setup_pkt_handlers(pkt_reader, mp_cli_pkt_writer);
         network_client_connect(host_ip, host_port);
@@ -161,13 +170,13 @@ void game_init(const char *ip, uint16_t port, game_kind play_mode, uint32_t num_
         world_setup_pkt_handlers(pkt_reader, game_mode == GAMEKIND_SINGLE ? sp_pkt_writer : mp_pkt_writer);
         world_init(seed, chunk_size, chunk_amount);
         if (is_dash_enabled) flecs_dash_init();
-        
+
         if (game_mode == GAMEKIND_HEADLESS) {
             network_server_start(0, 27000);
             //ecs_set_target_fps(world_ecs(), 60);
         }
     }
-    
+
     if (game_mode == GAMEKIND_SINGLE) {
         for (uint32_t i = 0; i < num_viewers; i++) {
             pkt_00_init_send(i);
@@ -180,27 +189,35 @@ int8_t game_is_networked() {
 }
 
 void game_shutdown() {
-    
+
     if (game_mode == GAMEKIND_CLIENT) {
         network_client_disconnect();
     } else {
         world_destroy();
-        
+
         if (game_mode == GAMEKIND_HEADLESS) {
             network_server_stop();
         }
     }
-    
+
     if (game_mode != GAMEKIND_SINGLE) {
         network_destroy();
     }
-    
+
     if (game_mode != GAMEKIND_HEADLESS) {
         world_viewers_destroy();
-        
+
         // TODO(zaklaus): crashes on exit
         //platform_shutdown();
     }
+
+    // NOTE: shutdown subsystems
+    {
+        item_cleanup();
+        entity_spawndef_cleanup();
+        blocks_cleanup();
+        assets_cleanup();
+    }
 }
 
 uint8_t game_is_running() {
@@ -228,10 +245,10 @@ void game_update() {
     }
     else {
         world_update();
-        
+
         if (game_mode == GAMEKIND_HEADLESS) {
             network_server_tick();
-            
+
             static float ms_report = 2.5f;
             if (ms_report < get_cached_time()) {
                 ms_report = get_cached_time() + 5.f;
@@ -239,7 +256,7 @@ void game_update() {
             }
         }
     }
-    
+
     last_update = get_cached_time();
 }
 
diff --git a/code/foundation/src/ents/entity.c b/code/foundation/src/ents/entity.c
index 81985db..2819255 100644
--- a/code/foundation/src/ents/entity.c
+++ b/code/foundation/src/ents/entity.c
@@ -11,6 +11,17 @@
 // NOTE(zaklaus): bring in entity spawnlist
 #include "entity_spawnlist.c"
 
+void entity_spawndef_cleanup() {
+    zpl_array_free(entity_spawnlist); entity_spawnlist = NULL;
+}
+void entity_spawndef_register(spawndef def) {
+    if (!entity_spawnlist) {
+        zpl_array_init(entity_spawnlist, zpl_heap());
+    }
+
+    zpl_array_append(entity_spawnlist, def);
+}
+
 uint64_t entity_spawn(uint16_t class_id) {
     ecs_entity_t e = ecs_new(world_ecs(), 0);
     
@@ -38,7 +49,7 @@ uint64_t entity_spawn(uint16_t class_id) {
 }
 
 uint64_t entity_spawn_id(uint16_t id){
-    for (size_t i = 0; i < MAX_ENTITY_SPAWNDEFS; ++i){
+    for (zpl_isize i = 0; i < zpl_array_count(entity_spawnlist); ++i){
         if (entity_spawnlist[i].id == id){
             ZPL_ASSERT(entity_spawnlist[i].proc);
             return entity_spawnlist[i].proc();
diff --git a/code/foundation/src/ents/entity.h b/code/foundation/src/ents/entity.h
index eaea315..edb2191 100644
--- a/code/foundation/src/ents/entity.h
+++ b/code/foundation/src/ents/entity.h
@@ -1,8 +1,18 @@
 #pragma once
 #include "platform/system.h"
+#include "gen/assets.h"
 
 #define ENTITY_ACTION_VELOCITY_THRESHOLD 0.05f
 
+typedef struct {
+    asset_id id;
+    uint64_t (*proc)();
+} spawndef;
+
+void entity_spawndef_setup();
+void entity_spawndef_cleanup();
+void entity_spawndef_register(spawndef def);
+
 uint64_t entity_spawn(uint16_t class_id /* 0 = no streaming */);
 uint64_t entity_spawn_id(uint16_t id);
 void entity_batch_despawn(uint64_t *ids, size_t num_ids);
diff --git a/code/foundation/src/ents/entity_spawnlist.c b/code/foundation/src/ents/entity_spawnlist.c
index 43f93c3..c2f45cc 100644
--- a/code/foundation/src/ents/entity_spawnlist.c
+++ b/code/foundation/src/ents/entity_spawnlist.c
@@ -1,11 +1,8 @@
 // NOTE(zaklaus): access to spawners
 #include "ents/storage.h"
 
-static struct {
-    asset_id id;
-    uint64_t (*proc)();
-} entity_spawnlist[] = {
-    { .id = ASSET_CHEST, .proc = storage_spawn }
-};
+static spawndef *entity_spawnlist = 0;
 
-#define MAX_ENTITY_SPAWNDEFS ((sizeof(entity_spawnlist))/(sizeof(entity_spawnlist[0])))
+void entity_spawndef_setup(void) {
+    entity_spawndef_register((spawndef){ .id = ASSET_CHEST, .proc = storage_spawn });
+}
diff --git a/code/foundation/src/ents/items.c b/code/foundation/src/ents/items.c
index 49101bd..5d1c201 100644
--- a/code/foundation/src/ents/items.c
+++ b/code/foundation/src/ents/items.c
@@ -9,10 +9,21 @@
 #include "zpl.h"
 
 #include "items_list.c"
-#define ITEMS_COUNT (sizeof(items)/sizeof(item_desc))
+
+void item_cleanup() {
+    zpl_array_free(items); items = NULL;
+}
+
+void item_register(item_desc desc) {
+    if (!items) {
+        zpl_array_init(items, zpl_heap());
+    }
+
+    zpl_array_append(items, desc);
+}
 
 static inline item_id item_resolve_proxy(item_id id) {
-    ZPL_ASSERT(id >= 0 && id < ITEMS_COUNT);
+    ZPL_ASSERT(id >= 0 && id < zpl_array_count(items));
     item_usage usage = items[id].usage;
     if (usage == UKIND_PROXY) {
         return item_find(items[id].proxy.id);
@@ -38,7 +49,7 @@ uint64_t item_spawn(asset_id kind, uint32_t qty) {
 }
 
 item_id item_find(asset_id kind) {
-    for (item_id i=0; i<ITEMS_COUNT; i++) {
+    for (item_id i=0; i<zpl_array_count(items); i++) {
         if (items[i].kind == kind)
             return item_resolve_proxy(i);
     }
@@ -104,16 +115,16 @@ void item_despawn(uint64_t id) {
 }
 
 uint32_t item_max_quantity(item_id id) {
-    ZPL_ASSERT(id >= 0 && id < ITEMS_COUNT);
+    ZPL_ASSERT(id >= 0 && id < zpl_array_count(items));
     return items[id].max_quantity;
 }
 
 item_usage item_get_usage(item_id id) {
-    ZPL_ASSERT(id >= 0 && id < ITEMS_COUNT);
+    ZPL_ASSERT(id >= 0 && id < zpl_array_count(items));
     return items[id].usage;
 }
 
 bool item_get_place_directional(item_id id) {
-    ZPL_ASSERT(id >= 0 && id < ITEMS_COUNT);
+    ZPL_ASSERT(id >= 0 && id < zpl_array_count(items));
     return items[id].place.directional;
 }
diff --git a/code/foundation/src/ents/items.h b/code/foundation/src/ents/items.h
index 9cb21ba..960bf94 100644
--- a/code/foundation/src/ents/items.h
+++ b/code/foundation/src/ents/items.h
@@ -41,6 +41,10 @@ typedef struct {
 
 typedef uint16_t item_id;
 
+void item_setup();
+void item_cleanup();
+void item_register(item_desc desc);
+
 // NOTE(zaklaus): item drops
 uint64_t item_spawn(asset_id kind, uint32_t qty);
 void item_despawn(uint64_t id);
diff --git a/code/foundation/src/ents/items_list.c b/code/foundation/src/ents/items_list.c
index 074ad25..b30c61c 100644
--- a/code/foundation/src/ents/items_list.c
+++ b/code/foundation/src/ents/items_list.c
@@ -2,18 +2,20 @@
 #include "world/entity_view.h"
 #include "items_list_helpers.h"
 
-static item_desc items[] = {
-    { .kind = 0, .max_quantity = 0, },
-    ITEM_BLOCK(ASSET_DEMO_ICEMAKER, 64, ASSET_WATER),
-    ITEM_SELF(ASSET_FENCE, 64),
-    ITEM_SELF(ASSET_WOOD, 64),
-    ITEM_HOLD(ASSET_TREE, 64),
-    
-    ITEM_SELF_DIR(ASSET_BELT, 999),
-    ITEM_PROXY(ASSET_BELT_LEFT, ASSET_BELT),
-    ITEM_PROXY(ASSET_BELT_RIGHT, ASSET_BELT),
-    ITEM_PROXY(ASSET_BELT_UP, ASSET_BELT),
-    ITEM_PROXY(ASSET_BELT_DOWN, ASSET_BELT),
-    
-    ITEM_ENT(ASSET_CHEST, 32, ASSET_CHEST),
-};
+static item_desc *items = 0;
+
+void item_setup() {
+    item_register((item_desc){ .kind = 0, .max_quantity = 0, });
+    item_register(ITEM_BLOCK(ASSET_DEMO_ICEMAKER, 64, ASSET_WATER));
+    item_register(ITEM_SELF(ASSET_FENCE, 64));
+    item_register(ITEM_SELF(ASSET_WOOD, 64));
+    item_register(ITEM_HOLD(ASSET_TREE, 64));
+
+    item_register(ITEM_SELF_DIR(ASSET_BELT, 999));
+    item_register(ITEM_PROXY(ASSET_BELT_LEFT, ASSET_BELT));
+    item_register(ITEM_PROXY(ASSET_BELT_RIGHT, ASSET_BELT));
+    item_register(ITEM_PROXY(ASSET_BELT_UP, ASSET_BELT));
+    item_register(ITEM_PROXY(ASSET_BELT_DOWN, ASSET_BELT));
+
+    item_register(ITEM_ENT(ASSET_CHEST, 32, ASSET_CHEST));
+}
diff --git a/code/foundation/src/ents/items_list_helpers.h b/code/foundation/src/ents/items_list_helpers.h
index 166d50f..11d4f71 100644
--- a/code/foundation/src/ents/items_list_helpers.h
+++ b/code/foundation/src/ents/items_list_helpers.h
@@ -1,14 +1,14 @@
 #pragma once
 
 #define ITEM_HOLD(asset, qty)\
-{\
+(item_desc){\
 .kind = asset,\
 .usage = UKIND_HOLD,\
 .max_quantity = qty,\
 }
 
 #define ITEM_BLOCK(asset, qty, build_asset)\
-{\
+(item_desc){\
 .kind = asset,\
 .usage = UKIND_PLACE,\
 .max_quantity = qty,\
@@ -18,7 +18,7 @@
 }
 
 #define ITEM_BLOCK_DIR(asset, qty, build_asset)\
-{\
+(item_desc){\
 .kind = asset,\
 .usage = UKIND_PLACE,\
 .max_quantity = qty,\
@@ -29,7 +29,7 @@
 }
 
 #define ITEM_PROXY(asset, proxy_id)\
-{\
+(item_desc){\
 .kind = asset,\
 .usage = UKIND_PROXY,\
 .proxy = {\
@@ -38,7 +38,7 @@
 }
 
 #define ITEM_ENT(asset, qty, eid)\
-{\
+(item_desc){\
 .kind = asset,\
 .usage = UKIND_PLACE_ITEM,\
 .max_quantity = qty,\
diff --git a/code/foundation/src/gen/assets.c b/code/foundation/src/gen/assets.c
index a751f07..d3d664d 100644
--- a/code/foundation/src/gen/assets.c
+++ b/code/foundation/src/gen/assets.c
@@ -2,17 +2,15 @@
 #include "raylib.h"
 #include "gen/texgen.h"
 
-#define ASSETS_COUNT (sizeof(assets)/sizeof(asset))
-
 typedef struct {
     asset_id id;
     asset_kind kind;
-    
+
     union {
         Texture2D tex;
         Sound snd;
     };
-    
+
     // NOTE(zaklaus): metadata
 } asset;
 
@@ -20,80 +18,92 @@ typedef struct {
 
 #define ASSET_FRAME_RENDER_MS (1.0/5.0)
 #define ASSET_FRAME_SKIP 4
-static int64_t assets_frame_counter = 1;
-static double assets_frame_next_draw = 0.0;
+static int64_t assets_resources_frame_counter = 1;
+static double assets_resources_frame_next_draw = 0.0;
 
 #include <time.h>
 
-int32_t assets_setup(void) {
-    for (uint32_t i=0; i<ASSETS_COUNT; i++) {
+void assets_register(asset_desc a) {
+    if (!assets) {
+        zpl_array_init(assets, zpl_heap());
+    }
+
+    zpl_array_append(assets, ((asset){ .id = a.id, .kind = a.kind }));
+}
+
+void assets_cleanup(void) {
+    zpl_array_free(assets); assets = NULL;
+}
+
+int32_t assets_resources_setup(void) {
+    for (zpl_isize i=0; i<zpl_array_count(assets); i++) {
         asset *b = &assets[i];
-        
+
         switch (b->kind) {
             case AKIND_TEXTURE: {
                 b->tex = texgen_build_sprite(b->id);
             }break;
-            
+
             case AKIND_ANIM: {
                 b->tex = texgen_build_anim(b->id, 0);
             }break;
-            
+
             case AKIND_SOUND: {
                 // TODO(zaklaus): soundgen
             }break;
-            
+
             default: break;
         }
     }
-    assets_frame_next_draw = get_cached_time() + ASSET_FRAME_RENDER_MS;
+    assets_resources_frame_next_draw = get_cached_time() + ASSET_FRAME_RENDER_MS;
     return 0;
 }
 
-int32_t assets_frame(void) {
-    if (assets_frame_next_draw < get_cached_time()) {
-        for (uint32_t i=0; i<ASSETS_COUNT; i++) {
+int32_t assets_resources_frame(void) {
+    if (assets_resources_frame_next_draw < get_cached_time()) {
+        for (zpl_isize i=0; i<zpl_array_count(assets); i++) {
             asset *b = &assets[i];
-            
+
             switch (b->kind) {
                 case AKIND_ANIM: {
                     UnloadTexture(b->tex);
-                    b->tex = texgen_build_anim(b->id, assets_frame_counter);
+                    b->tex = texgen_build_anim(b->id, assets_resources_frame_counter);
                 }break;
-                
+
                 default: break;
             }
         }
-        
-        assets_frame_next_draw = get_cached_time() + ASSET_FRAME_RENDER_MS;
-        assets_frame_counter += ASSET_FRAME_SKIP;
+
+        assets_resources_frame_next_draw = get_cached_time() + ASSET_FRAME_RENDER_MS;
+        assets_resources_frame_counter += ASSET_FRAME_SKIP;
     }
-    
+
     return 0;
 }
 
-void assets_destroy(void) {
-    for (uint32_t i=0; i<ASSETS_COUNT; i++) {
+void assets_resources_destroy(void) {
+    for (zpl_isize i=0; i<zpl_array_count(assets); i++) {
         switch (assets[i].kind) {
             case AKIND_ANIM:
             case AKIND_TEXTURE: {
                 UnloadTexture(assets[i].tex);
             }break;
-            
+
             case AKIND_SOUND: {
                 // TODO(zaklaus): soundgen
             }break;
-            
+
             default: break;
         }
     }
 }
 
 uint16_t assets_find(asset_id id) {
-    for (uint16_t i=0; i<ASSETS_COUNT; i++) {
+    for (zpl_isize i=0; i<zpl_array_count(assets); i++) {
         if (assets[i].id == id)
             return i;
     }
-    
+
     ZPL_PANIC("Unknown asset id: %d\n", id);
     return ASSET_INVALID;
 }
diff --git a/code/foundation/src/gen/assets.h b/code/foundation/src/gen/assets.h
index 8613de0..ce248ed 100644
--- a/code/foundation/src/gen/assets.h
+++ b/code/foundation/src/gen/assets.h
@@ -3,20 +3,30 @@
 
 #define ASSET_INVALID 0xFF
 
+#define ASSET_ENTRY(asset, asset_kind)\
+(asset_desc){\
+.id = asset,\
+.kind = asset_kind,\
+}
+
+#define ASSET_SND(asset) ASSET_ENTRY(asset, AKIND_SOUND)
+#define ASSET_TEX(asset) ASSET_ENTRY(asset, AKIND_TEXTURE)
+#define ASSET_ANI(asset) ASSET_ENTRY(asset, AKIND_ANIM)
+
 typedef enum {
     // NOTE(zaklaus): Debug
     ASSET_EMPTY,
     ASSET_BLANK,
     ASSET_BUILDMODE_HIGHLIGHT,
-    
+
     // NOTE(zaklaus): entities
     ASSET_PLAYER,
     ASSET_THING,
     ASSET_CHEST,
-    
+
     // NOTE(zaklaus): items
     ASSET_DEMO_ICEMAKER,
-    
+
     // NOTE(zaklaus): blocks
     ASSET_FENCE,
     ASSET_DEV,
@@ -30,13 +40,15 @@ typedef enum {
     ASSET_HOLE,
     ASSET_WOOD,
     ASSET_TREE,
-    
+
     ASSET_BELT,
     ASSET_BELT_LEFT,
     ASSET_BELT_RIGHT,
     ASSET_BELT_UP,
     ASSET_BELT_DOWN,
-    
+
+    ASSET_NEXT_FREE,
+
     MAX_ASSETS = 1024,
 } asset_id;
 
@@ -44,13 +56,23 @@ typedef enum {
     AKIND_TEXTURE,
     AKIND_ANIM,
     AKIND_SOUND,
-    
+
     FORCE_AKIND_UINT8 = UINT8_MAX
 } asset_kind;
 
-int32_t assets_setup(void);
-int32_t assets_frame(void);
-void assets_destroy(void);
+typedef struct {
+    asset_id id;
+    asset_kind kind;
+} asset_desc;
+
+void assets_setup(void);
+void assets_cleanup(void);
+void assets_register(asset_desc desc);
+
+// resources
+int32_t assets_resources_setup(void);
+void assets_resources_destroy(void);
+int32_t assets_resources_frame(void);
 
 uint16_t assets_find(asset_id id);
 
diff --git a/code/foundation/src/gen/assets_list.c b/code/foundation/src/gen/assets_list.c
index 652dc03..fbc640b 100644
--- a/code/foundation/src/gen/assets_list.c
+++ b/code/foundation/src/gen/assets_list.c
@@ -1,39 +1,31 @@
 #include "gen/assets.h"
 
-#define ASSET_ENTRY(asset, asset_kind)\
-{\
-.id = asset,\
-.kind = asset_kind,\
-}
+static asset *assets = 0;
 
-#define ASSET_SND(asset) ASSET_ENTRY(asset, AKIND_SOUND)
-#define ASSET_TEX(asset) ASSET_ENTRY(asset, AKIND_TEXTURE)
-#define ASSET_ANI(asset) ASSET_ENTRY(asset, AKIND_ANIM)
+void assets_setup() {
+    assets_register(ASSET_TEX(ASSET_EMPTY));
+    assets_register(ASSET_TEX(ASSET_BLANK));
+    assets_register(ASSET_TEX(ASSET_BUILDMODE_HIGHLIGHT));
+    assets_register(ASSET_TEX(ASSET_DEMO_ICEMAKER));
+    assets_register(ASSET_TEX(ASSET_CHEST));
 
-static asset assets[] = {
-    ASSET_TEX(ASSET_EMPTY),
-    ASSET_TEX(ASSET_BLANK),
-    ASSET_TEX(ASSET_BUILDMODE_HIGHLIGHT),
-    ASSET_TEX(ASSET_DEMO_ICEMAKER),
-    ASSET_TEX(ASSET_CHEST),
-    
-    // NOTE(zaklaus): blocks
-    ASSET_TEX(ASSET_FENCE),
-    ASSET_TEX(ASSET_DEV),
-    ASSET_TEX(ASSET_GROUND),
-    ASSET_TEX(ASSET_DIRT),
-    ASSET_ANI(ASSET_WATER),
-    ASSET_TEX(ASSET_LAVA),
-    ASSET_TEX(ASSET_WALL),
-    ASSET_TEX(ASSET_HILL),
-    ASSET_TEX(ASSET_HILL_SNOW),
-    ASSET_TEX(ASSET_HOLE),
-    ASSET_TEX(ASSET_WOOD),
-    ASSET_TEX(ASSET_TREE),
-    
-    ASSET_TEX(ASSET_BELT),
-    ASSET_TEX(ASSET_BELT_LEFT),
-    ASSET_TEX(ASSET_BELT_RIGHT),
-    ASSET_TEX(ASSET_BELT_UP),
-    ASSET_TEX(ASSET_BELT_DOWN),
+    // NOTE: blocks
+    assets_register(ASSET_TEX(ASSET_FENCE));
+    assets_register(ASSET_TEX(ASSET_DEV));
+    assets_register(ASSET_TEX(ASSET_GROUND));
+    assets_register(ASSET_TEX(ASSET_DIRT));
+    assets_register(ASSET_ANI(ASSET_WATER));
+    assets_register(ASSET_TEX(ASSET_LAVA));
+    assets_register(ASSET_TEX(ASSET_WALL));
+    assets_register(ASSET_TEX(ASSET_HILL));
+    assets_register(ASSET_TEX(ASSET_HILL_SNOW));
+    assets_register(ASSET_TEX(ASSET_HOLE));
+    assets_register(ASSET_TEX(ASSET_WOOD));
+    assets_register(ASSET_TEX(ASSET_TREE));
+
+    assets_register(ASSET_TEX(ASSET_BELT));
+    assets_register(ASSET_TEX(ASSET_BELT_LEFT));
+    assets_register(ASSET_TEX(ASSET_BELT_RIGHT));
+    assets_register(ASSET_TEX(ASSET_BELT_UP));
+    assets_register(ASSET_TEX(ASSET_BELT_DOWN));
 };
diff --git a/code/foundation/src/renderers/renderer_3d.c b/code/foundation/src/renderers/renderer_3d.c
index 37cd39a..c38e90a 100644
--- a/code/foundation/src/renderers/renderer_3d.c
+++ b/code/foundation/src/renderers/renderer_3d.c
@@ -127,13 +127,13 @@ void renderer_init_3d(void) {
     DrawText(loading_text, GetScreenWidth()-text_w-15, GetScreenHeight()-135, 120, RAYWHITE);
     EndDrawing();
     
-    blocks_setup();
-    assets_setup();
+    assets_resources_setup();
+    blocks_resources_setup();
 }
 
 void renderer_shutdown_3d(void) {
-    blocks_destroy();
-    assets_destroy();
+    blocks_resources_destroy();
+    assets_resources_destroy();
 }
 
 
diff --git a/code/foundation/src/renderers/renderer_v0.c b/code/foundation/src/renderers/renderer_v0.c
index a21bddf..f050bfa 100644
--- a/code/foundation/src/renderers/renderer_v0.c
+++ b/code/foundation/src/renderers/renderer_v0.c
@@ -179,13 +179,13 @@ void renderer_init_v0(void) {
     DrawText(loading_text, GetScreenWidth()-text_w-15, GetScreenHeight()-135, 120, RAYWHITE);
     EndDrawing();
 
-    blocks_setup();
-    assets_setup();
+    assets_resources_setup();
+    blocks_resources_setup();
 }
 
 void renderer_shutdown_v0(void) {
-    blocks_destroy();
-    assets_destroy();
+    blocks_resources_destroy();
+    assets_resources_destroy();
 }
 
 void renderer_debug_draw_v0(void) {
diff --git a/code/foundation/src/world/blocks.c b/code/foundation/src/world/blocks.c
index c3aef45..a5c8e40 100644
--- a/code/foundation/src/world/blocks.c
+++ b/code/foundation/src/world/blocks.c
@@ -7,7 +7,6 @@
 #include "world/world_view.h"
 #include "perlin.h"
 
-#define BLOCKS_COUNT (sizeof(blocks)/sizeof(block))
 #define WORLD_TEXTURE_BLOCK_SCALE 0.5f
 
 ZPL_TABLE(static, blocks__chunk_tbl, blocks__chunk_tbl_, RenderTexture2D);
@@ -19,38 +18,35 @@ static void chunks_unload_textures(uint64_t key, RenderTexture2D *value) {
     UnloadRenderTexture(*value);
 }
 
-typedef struct {
-    asset_id kind;
-    uint32_t flags;
-    char symbol;
-    float drag;
-    float friction;
-    float bounce;
-    
-    float velx;
-    float vely;
-    
-    // NOTE(zaklaus): viewer data
-    block_id slot;
-} block;
-
 #include "blocks_list.c"
 
-int32_t blocks_setup(void) {
-    for (block_id i=0; i<BLOCKS_COUNT; i++) {
+void blocks_register(block desc) {
+    if (!blocks) {
+        zpl_array_init(blocks, zpl_heap());
+    }
+
+    zpl_array_append(blocks, desc);
+}
+
+void blocks_cleanup(void) {
+    zpl_array_free(blocks); blocks = NULL;
+}
+
+int32_t blocks_resources_setup(void) {
+    for (block_id i=0; i<zpl_array_count(blocks); i++) {
         blocks[i].slot = assets_find(blocks[i].kind);
     }
     blocks__chunk_tbl_init(&baked_chunks, zpl_heap());
     return 0;
 }
 
-void blocks_destroy(void) {
+void blocks_resources_destroy(void) {
     blocks__chunk_tbl_map_mut(&baked_chunks, chunks_unload_textures);
     blocks__chunk_tbl_destroy(&baked_chunks);
 }
 
 block_id blocks_find(asset_id kind) {
-    for (block_id i=0; i<BLOCKS_COUNT; i++) {
+    for (block_id i=0; i<zpl_array_count(blocks); i++) {
         if (blocks[i].kind == kind)
             return i;
     }
diff --git a/code/foundation/src/world/blocks.h b/code/foundation/src/world/blocks.h
index 5624b23..ee01deb 100644
--- a/code/foundation/src/world/blocks.h
+++ b/code/foundation/src/world/blocks.h
@@ -2,6 +2,11 @@
 #include "platform/system.h"
 #include "gen/assets.h"
 
+#define BLOCK(a, f, s, ...)\
+(block){\
+.kind = a, .flags = f, .symbol = s, __VA_ARGS__\
+}
+
 typedef enum {
     BLOCK_FLAG_COLLISION = (1 << 1),
     BLOCK_FLAG_HAZARD = (1 << 2),
@@ -11,8 +16,28 @@ typedef enum {
 
 typedef uint16_t block_id;
 
-int32_t blocks_setup(void);
-void blocks_destroy(void);
+typedef struct {
+    asset_id kind;
+    uint32_t flags;
+    char symbol;
+    float drag;
+    float friction;
+    float bounce;
+
+    float velx;
+    float vely;
+
+    // NOTE(zaklaus): viewer data
+    block_id slot;
+} block;
+
+void blocks_setup(void);
+void blocks_register(block desc);
+void blocks_cleanup(void);
+
+// resources
+int32_t blocks_resources_setup(void);
+void blocks_resources_destroy(void);
 
 block_id blocks_find(asset_id kind);
 
diff --git a/code/foundation/src/world/blocks_list.c b/code/foundation/src/world/blocks_list.c
index 7944e3c..db51660 100644
--- a/code/foundation/src/world/blocks_list.c
+++ b/code/foundation/src/world/blocks_list.c
@@ -1,27 +1,22 @@
 #include "world/blocks.h"
 
-#define BLOCK(a, f, s, ...)\
-{\
-.kind = a, .flags = f, .symbol = s, __VA_ARGS__\
-}
+static block *blocks = 0;
 
-static block blocks[] = {
-    BLOCK(ASSET_EMPTY, 0, 'E'),
-    BLOCK(ASSET_GROUND, 0, '.', .drag = 1.0f, .friction = 1.0f),
-    BLOCK(ASSET_DIRT, 0, ',', .drag = 2.1f , .friction = 1.0f),
-    BLOCK(ASSET_WALL, BLOCK_FLAG_COLLISION, '#', .drag = 1.0f , .friction = 1.0f, .bounce = 1.0f),
-    BLOCK(ASSET_HILL, BLOCK_FLAG_COLLISION, '^', .drag = 1.0f , .friction = 1.0f),
-    BLOCK(ASSET_HILL_SNOW, BLOCK_FLAG_COLLISION, '*', .drag = 1.0f , .friction = 1.0f),
-    BLOCK(ASSET_WATER, 0, '~', .drag = 0.11f , .friction = 1.0f),
-    BLOCK(ASSET_LAVA, BLOCK_FLAG_HAZARD, '!', .drag = 6.2f , .friction = 4.0f),
-    BLOCK(ASSET_FENCE, BLOCK_FLAG_COLLISION, '#', .drag = 1.0f , .friction = 1.0f, .bounce = 1.0f),
-    BLOCK(ASSET_WOOD, BLOCK_FLAG_COLLISION, '#', .drag = 1.0f , .friction = 1.0f, .bounce = 0.0f),
-    BLOCK(ASSET_TREE, BLOCK_FLAG_COLLISION|BLOCK_FLAG_DESTROY_ON_COLLISION, '@', .drag = 1.0f , .friction = 1.0f, .bounce = 0.0f),
+void blocks_setup() {
+    blocks_register(BLOCK(ASSET_EMPTY, 0, 'E'));
+    blocks_register(BLOCK(ASSET_GROUND, 0, '.', .drag = 1.0f, .friction = 1.0f));
+    blocks_register(BLOCK(ASSET_DIRT, 0, ',', .drag = 2.1f , .friction = 1.0f));
+    blocks_register(BLOCK(ASSET_WALL, BLOCK_FLAG_COLLISION, '#', .drag = 1.0f , .friction = 1.0f, .bounce = 1.0f));
+    blocks_register(BLOCK(ASSET_HILL, BLOCK_FLAG_COLLISION, '^', .drag = 1.0f , .friction = 1.0f));
+    blocks_register(BLOCK(ASSET_HILL_SNOW, BLOCK_FLAG_COLLISION, '*', .drag = 1.0f , .friction = 1.0f));
+    blocks_register(BLOCK(ASSET_WATER, 0, '~', .drag = 0.11f , .friction = 1.0f));
+    blocks_register(BLOCK(ASSET_LAVA, BLOCK_FLAG_HAZARD, '!', .drag = 6.2f , .friction = 4.0f));
+    blocks_register(BLOCK(ASSET_FENCE, BLOCK_FLAG_COLLISION, '#', .drag = 1.0f , .friction = 1.0f, .bounce = 1.0f));
+    blocks_register(BLOCK(ASSET_WOOD, BLOCK_FLAG_COLLISION, '#', .drag = 1.0f , .friction = 1.0f, .bounce = 0.0f));
+    blocks_register(BLOCK(ASSET_TREE, BLOCK_FLAG_COLLISION|BLOCK_FLAG_DESTROY_ON_COLLISION, '@', .drag = 1.0f , .friction = 1.0f, .bounce = 0.0f));
 
-    BLOCK(ASSET_BELT_LEFT, 0, '@', .drag = 1.0f , .friction = 1.0f, .velx = -150.0f),
-    BLOCK(ASSET_BELT_RIGHT, 0, '@', .drag = 1.0f , .friction = 1.0f, .velx = 150.0f),
-    BLOCK(ASSET_BELT_UP, 0, '@', .drag = 1.0f , .friction = 1.0f, .vely = -150.0f),
-    BLOCK(ASSET_BELT_DOWN, 0, '@', .drag = 1.0f , .friction = 1.0f, .vely = 150.0f),
+    blocks_register(BLOCK(ASSET_BELT_LEFT, 0, '@', .drag = 1.0f , .friction = 1.0f, .velx = -150.0f));
+    blocks_register(BLOCK(ASSET_BELT_RIGHT, 0, '@', .drag = 1.0f , .friction = 1.0f, .velx = 150.0f));
+    blocks_register(BLOCK(ASSET_BELT_UP, 0, '@', .drag = 1.0f , .friction = 1.0f, .vely = -150.0f));
+    blocks_register(BLOCK(ASSET_BELT_DOWN, 0, '@', .drag = 1.0f , .friction = 1.0f, .vely = 150.0f));
 };
-
-ZPL_STATIC_ASSERT(sizeof(blocks)/sizeof(block) < ZPL_U16_MAX, "too many registered blocks! (max. 65536)");
diff --git a/code/foundation/src/world/entity_view.h b/code/foundation/src/world/entity_view.h
index 722457a..f134f4e 100644
--- a/code/foundation/src/world/entity_view.h
+++ b/code/foundation/src/world/entity_view.h
@@ -16,7 +16,7 @@ typedef enum {
     EKIND_MONSTER,
     EKIND_MACRO_BOT,
     EKIND_CHUNK,
-    FORCE_EKIND_UINT16 = UINT16_MAX
+    EKIND_NEXT_FREE
 } entity_kind;
 
 typedef enum {
diff --git a/code/games/sandbox/CMakeLists.txt b/code/games/sandbox/CMakeLists.txt
index 1ed1570..7fad0dc 100644
--- a/code/games/sandbox/CMakeLists.txt
+++ b/code/games/sandbox/CMakeLists.txt
@@ -1,5 +1,6 @@
 add_executable(eco2d
     src/main.c
+    src/platform.c
 )
 
 target_compile_definitions(eco2d PRIVATE CLIENT)
diff --git a/code/foundation/src/gui/build_mode.c b/code/games/sandbox/src/gui/build_mode.c
similarity index 100%
rename from code/foundation/src/gui/build_mode.c
rename to code/games/sandbox/src/gui/build_mode.c
diff --git a/code/foundation/src/gui/inventory.c b/code/games/sandbox/src/gui/inventory.c
similarity index 100%
rename from code/foundation/src/gui/inventory.c
rename to code/games/sandbox/src/gui/inventory.c
diff --git a/code/foundation/src/platform/platform_raylib.c b/code/games/sandbox/src/platform.c
similarity index 99%
rename from code/foundation/src/platform/platform_raylib.c
rename to code/games/sandbox/src/platform.c
index d806015..2cf4804 100644
--- a/code/foundation/src/platform/platform_raylib.c
+++ b/code/games/sandbox/src/platform.c
@@ -270,7 +270,7 @@ void platform_render() {
         game_world_view_active_entity_map(do_entity_fadeinout);
     }
 
-    assets_frame();
+    assets_resources_frame();
 
     BeginDrawing();
     {