Properly link flecs library

engine/libs/flecs/src/observable.h

@@ -0,0 +1,66 @@
+/**
+ * @file observable.h
+ * @brief Functions for sending events.
+ */
+
+#ifndef FLECS_OBSERVABLE_H
+#define FLECS_OBSERVABLE_H
+
+ecs_event_record_t* flecs_event_record_get(
+    const ecs_observable_t *o,
+    ecs_entity_t event);
+
+ecs_event_record_t* flecs_event_record_ensure(
+    ecs_observable_t *o,
+    ecs_entity_t event);
+
+ecs_event_id_record_t* flecs_event_id_record_get(
+    const ecs_event_record_t *er,
+    ecs_id_t id);
+
+ecs_event_id_record_t* flecs_event_id_record_ensure(
+    ecs_world_t *world,
+    ecs_event_record_t *er,
+    ecs_id_t id);
+
+void flecs_event_id_record_remove(
+    ecs_event_record_t *er,
+    ecs_id_t id);
+
+void flecs_observable_init(
+    ecs_observable_t *observable);
+
+void flecs_observable_fini(
+    ecs_observable_t *observable);
+
+bool flecs_observers_exist(
+    ecs_observable_t *observable,
+    ecs_id_t id,
+    ecs_entity_t event);
+
+void flecs_observer_fini(
+    ecs_observer_t *observer);
+
+void flecs_emit( 
+    ecs_world_t *world,
+    ecs_world_t *stage,
+    ecs_event_desc_t *desc);
+
+bool flecs_default_observer_next_callback(
+    ecs_iter_t *it);
+
+void flecs_observers_invoke(
+    ecs_world_t *world,
+    ecs_map_t *observers,
+    ecs_iter_t *it,
+    ecs_table_t *table,
+    ecs_entity_t trav,
+    int32_t evtx);
+
+void flecs_emit_propagate_invalidate(
+    ecs_world_t *world,
+    ecs_table_t *table,
+    int32_t offset,
+    int32_t count);
+
+#endif