diff --git a/luprex/core/cpp/world-testing.cpp b/luprex/core/cpp/world-testing.cpp
index ac4440a3..8f3612a3 100644
--- a/luprex/core/cpp/world-testing.cpp
+++ b/luprex/core/cpp/world-testing.cpp
@@ -21,6 +21,13 @@ std::string World::tangible_anim_debug_string(int64_t id) const {
 }
 
 
+std::string World::tangible_id_pool_debug_string(int64_t id) const {
+    const Tangible *t = tangible_get(id);
+    if (t == 0) return "no such tangible";
+    return t->id_player_pool_.debug_string();
+}
+
+
 std::string World::tangible_ids_debug_string() const {
     util::IdVector idv;
     for (const auto &pair : tangibles_) {
diff --git a/luprex/core/cpp/world.hpp b/luprex/core/cpp/world.hpp
index 90476fe8..2f0963f3 100644
--- a/luprex/core/cpp/world.hpp
+++ b/luprex/core/cpp/world.hpp
@@ -82,7 +82,7 @@ public:
 
     void update_plane_item();
     bool is_an_actor() { return (id_player_pool_.get_fifo_capacity() > 0); }
-    void configure_id_pool_for_actor() { id_player_pool_.set_fifo_capacity(20); }
+    void configure_id_pool_for_actor() { id_player_pool_.set_fifo_capacity(3); id_player_pool_.refill(); }
 };
 
 using UniqueTangible = std::unique_ptr<Tangible>;
@@ -295,6 +295,10 @@ public:
     //
     std::string tangible_anim_debug_string(int64_t id) const;
 
+    // Get the tangible's ID Pool as a debug string.
+    //
+    std::string tangible_id_pool_debug_string(int64_t id) const;
+
     // Get a list of all existing tangibles as a comma-separated string.
     //
     std::string tangible_ids_debug_string() const;