#525 fix issue where entity::each passes stage to ecs_type_match

Author: SanderMertens

flecs.c

@@ -33137,6 +33137,8 @@ bool ecs_type_has_id(
     ecs_id_t id,
     bool owned)
 {
+    ecs_poly_assert(world, ecs_world_t);
+    
     return search_type(world, NULL, type, 0, id, owned ? 0 : EcsIsA, 0, 0, 0, 
         NULL, NULL) != -1;
 }
@@ -33161,6 +33163,8 @@ int32_t ecs_type_match(
     ecs_entity_t *subject_out,
     int32_t *count_out)
 {
+    ecs_poly_assert(world, ecs_world_t);
+    
     if (subject_out) {
         *subject_out = 0;
     }

flecs.h

@@ -17889,6 +17889,9 @@ inline void entity_view::each(const Func& func) const {
 
 template <typename Func>
 inline void entity_view::each(flecs::id_t pred, flecs::id_t obj, const Func& func) const {
+    flecs::world_t *real_world = std::const_cast<flecs::world_t*>(
+        ecs_get_world(m_world));
+
     const ecs_table_t *table = ecs_get_table(m_world, m_id);
     if (!table) {
         return;
@@ -17909,7 +17912,7 @@ inline void entity_view::each(flecs::id_t pred, flecs::id_t obj, const Func& fun
         _ecs_vector_first(type, ECS_VECTOR_T(ecs_id_t)));
 
     while (-1 != (cur = ecs_type_match(
-        m_world, table, type, cur, pattern, 0, 0, 0, NULL, NULL))) 
+        real_world, table, type, cur, pattern, 0, 0, 0, NULL, NULL))) 
     {
         flecs::id ent(m_world, ids[cur]);
         func(ent);

include/flecs/addons/cpp/impl/entity.hpp

@@ -142,6 +142,9 @@ inline void entity_view::each(const Func& func) const {
 
 template <typename Func>
 inline void entity_view::each(flecs::id_t pred, flecs::id_t obj, const Func& func) const {
+    flecs::world_t *real_world = std::const_cast<flecs::world_t*>(
+        ecs_get_world(m_world));
+
     const ecs_table_t *table = ecs_get_table(m_world, m_id);
     if (!table) {
         return;
@@ -162,7 +165,7 @@ inline void entity_view::each(flecs::id_t pred, flecs::id_t obj, const Func& fun
         _ecs_vector_first(type, ECS_VECTOR_T(ecs_id_t)));
 
     while (-1 != (cur = ecs_type_match(
-        m_world, table, type, cur, pattern, 0, 0, 0, NULL, NULL))) 
+        real_world, table, type, cur, pattern, 0, 0, 0, NULL, NULL))) 
     {
         flecs::id ent(m_world, ids[cur]);
         func(ent);

src/type.c

@@ -128,6 +128,8 @@ bool ecs_type_has_id(
     ecs_id_t id,
     bool owned)
 {
+    ecs_poly_assert(world, ecs_world_t);
+    
     return search_type(world, NULL, type, 0, id, owned ? 0 : EcsIsA, 0, 0, 0, 
         NULL, NULL) != -1;
 }
@@ -152,6 +154,8 @@ int32_t ecs_type_match(
     ecs_entity_t *subject_out,
     int32_t *count_out)
 {
+    ecs_poly_assert(world, ecs_world_t);
+    
     if (subject_out) {
         *subject_out = 0;
     }

test/cpp_api/project.json

@@ -172,7 +172,8 @@
                 "child_of",
                 "child_of_w_type",
                 "id_get_entity",
-                "id_get_invalid_entity"
+                "id_get_invalid_entity",
+                "each_in_stage"
             ]
         }, {
             "id": "Pairs",

test/cpp_api/src/Entity.cpp

@@ -2963,3 +2963,30 @@ void Entity_id_get_invalid_entity() {
 
     id.entity();
 }
+
+void Entity_each_in_stage() {
+    flecs::world world;
+
+    struct Rel { };
+    struct Obj { };
+
+    auto e = world.entity().add<Rel, Obj>();
+    test_assert((e.has<Rel, Obj>()));
+
+    world.staging_begin();
+
+    auto s = world.get_stage(0);
+    auto em = e.mut(s);
+    test_assert((em.has<Rel, Obj>()));
+
+    int count = 0;
+
+    em.each<Rel>([&](flecs::entity obj) {
+        count ++;
+        test_assert(obj == world.id<Obj>());
+    });
+
+    test_int(count, 1);
+
+    world.staging_end();
+}

test/cpp_api/src/main.cpp

@@ -167,6 +167,7 @@ void Entity_child_of(void);
 void Entity_child_of_w_type(void);
 void Entity_id_get_entity(void);
 void Entity_id_get_invalid_entity(void);
+void Entity_each_in_stage(void);
 
 // Testsuite 'Pairs'
 void Pairs_add_component_pair(void);
@@ -1349,6 +1350,10 @@ bake_test_case Entity_testcases[] = {
     {
         "id_get_invalid_entity",
         Entity_id_get_invalid_entity
+    },
+    {
+        "each_in_stage",
+        Entity_each_in_stage
     }
 };
 
@@ -3444,7 +3449,7 @@ static bake_test_suite suites[] = {
         "Entity",
         NULL,
         NULL,
-        158,
+        159,
         Entity_testcases
     },
     {