Happy holidays!

deps/flecs.h

@@ -561,7 +561,6 @@ extern "C" {
 //// Aperiodic action flags (used by ecs_run_aperiodic)
 ////////////////////////////////////////////////////////////////////////////////
 
-#define EcsAperiodicEmptyTables        (1u << 1u)  /* Process pending empty table events */
 #define EcsAperiodicComponentMonitors  (1u << 2u)  /* Process component monitors */
 #define EcsAperiodicEmptyQueries       (1u << 4u)  /* Process empty queries */
 
@@ -3208,7 +3207,6 @@ typedef struct ecs_table_cache_hdr_t {
     struct ecs_table_cache_t *cache;  /**< Table cache of element. Of type ecs_id_record_t* for component index elements. */
     ecs_table_t *table;               /**< Table associated with element. */
     struct ecs_table_cache_hdr_t *prev, *next; /**< Next/previous elements for id in table cache. */
-    bool empty;                       /**< Whether element is in empty list. */
 } ecs_table_cache_hdr_t;
 
 /** Metadata describing where a component id is stored in a table.
@@ -3758,7 +3756,8 @@ typedef struct ecs_worker_iter_t {
 /* Convenience struct to iterate table array for id */
 typedef struct ecs_table_cache_iter_t {
     struct ecs_table_cache_hdr_t *cur, *next;
-    struct ecs_table_cache_hdr_t *next_list;
+    bool iter_fill;
+    bool iter_empty;
 } ecs_table_cache_iter_t;
 
 /** Each iterator */
@@ -4674,7 +4673,6 @@ typedef struct ecs_world_info_t {
     int32_t pair_id_count;            /**< Number of pair ids in the world */
 
     int32_t table_count;              /**< Number of tables */
-    int32_t empty_table_count;        /**< Number of tables without entities */
 
     /* -- Command counts -- */
     struct {
@@ -5051,12 +5049,6 @@ FLECS_API extern const ecs_entity_t EcsOnTableCreate;
 /** Event that triggers when a table is deleted. */
 FLECS_API extern const ecs_entity_t EcsOnTableDelete;
 
-/** Event that triggers when a table becomes empty (doesn't emit on creation). */
-FLECS_API extern const ecs_entity_t EcsOnTableEmpty;
-
-/** Event that triggers when a table becomes non-empty. */
-FLECS_API extern const ecs_entity_t EcsOnTableFill;
-
 /** Relationship used for specifying cleanup behavior. */
 FLECS_API extern const ecs_entity_t EcsOnDelete;
 
@@ -14853,18 +14845,23 @@ void ecs_script_vars_from_iter(
 typedef struct ecs_expr_eval_desc_t {
     const char *name;                /**< Script name */
     const char *expr;                /**< Full expression string */
+    const ecs_script_vars_t *vars;   /**< Variables accessible in expression */
+    ecs_entity_t type;               /**< Type of parsed value (optional) */
     ecs_entity_t (*lookup_action)(   /**< Function for resolving entity identifiers */
         const ecs_world_t*,
         const char *value,
         void *ctx);
     void *lookup_ctx;                /**< Context passed to lookup function */
-    const ecs_script_vars_t *vars;   /**< Variables accessible in expression */
-    ecs_entity_t type;               /**< Type of parsed value (optional) */
-
-    /* Disable constant folding (slower evaluation, faster parsing) */
+
+    /** Disable constant folding (slower evaluation, faster parsing) */
     bool disable_folding;
-
-    /* Allow for unresolved identifiers when parsing. Useful when entities can
+
+    /** This option instructs the expression runtime to lookup variables by 
+     * stack pointer instead of by name, which improves performance. Only enable 
+     * when provided variables are always declared in the same order. */
+    bool disable_dynamic_variable_binding;
+
+    /** Allow for unresolved identifiers when parsing. Useful when entities can
      * be created in between parsing & evaluating. */
     bool allow_unresolved_identifiers;
 

deps/flecs_systems_sokol.c

@@ -32757,7 +32757,9 @@ void SokolRegisterMaterial(ecs_iter_t *it) {
     for (i = 0; i < it->count; i ++) {
         uint16_t material_id;
         if (ecs_vec_count(material_free_list)) {
-            material_id = ecs_vec_get_t(material_free_list, uint16_t, 0)[0];
+            material_id = ecs_vec_last_t(material_free_list, uint16_t)[0];
+            ecs_assert(material_id != 0, ECS_INTERNAL_ERROR, NULL);
+            ecs_vec_remove_last(material_free_list);
         } else {
             material_id = next_material ++;
         }
@@ -32793,6 +32795,11 @@ void FlecsSystemsSokolMaterialsImport(
     ECS_COMPONENT_DEFINE(world, SokolMaterialId);
     ECS_COMPONENT_DEFINE(world, SokolMaterials);
 
+    ecs_struct(world, {
+        .entity = ecs_id(SokolMaterialId),
+        .members = {{ "value", ecs_id(ecs_u16_t) }}
+    });
+
     ecs_add_pair(world, ecs_id(SokolMaterialId), EcsOnInstantiate, EcsInherit);
 
     /* Register systems in module scope */
@@ -32838,7 +32845,8 @@ void FlecsSystemsSokolMaterialsImport(
     });
 
     ECS_OBSERVER(world, SokolOnMaterialRemove, EcsOnRemove,
-        flecs.systems.sokol.MaterialId);
+        flecs.systems.sokol.MaterialId(self),
+        ?Prefab);
 
     ecs_observer(world, {
         .entity = ecs_id(SokolOnMaterialRemove),

etc/assets/app.flecs

@@ -15,8 +15,8 @@ $ {
 
 camera {
   CameraController
-  Position3: {12.43, 5.65, 10.20}
-  Rotation3: {-0.23, 4.04, 0}
+  Position3: {-3.41, 5.61, 12.92}
+  Rotation3: {0, 2.63, 0}
   Camera: {
     fov: 20
     up: [0, 1, 0]