Viewer is ready to go, I think

luprex/syscpp/world.hpp

@@ -21,17 +21,23 @@ public:
     // Always points back to the world model.
     World *world_;
 
-    // Animation queue and plane item.
+    // Animation queue.
     //
-    // To update the position of this tangible, first add an animation in which
-    // the tangible moves, then call plane_item.set_pos_from(anim_queue_).
-    PlaneItem plane_item_;
     AnimQueue anim_queue_;
 
+    // Plane Item.
+    //
+    // The PlaneItem also contains this tangible's ID.
+    // To move this Tangible, update the anim_queue first, then update
+    // this plane_item_ from the anim_queue.
+    PlaneItem plane_item_;
+
     // Player ID pool
     //
     // Note: this is only allocated if this Tangible is a player.
     std::unique_ptr<IdPlayerPool> id_player_pool_;
+
+    void be_a_player();
 };
 
 class World {
@@ -66,18 +72,34 @@ public:
     //
     ~World();
 
+    // Initialize for single-player mode.
+    //
+    void init_standalone();
+
     // get_lua_state
     //
     // Get the lua interpreter associated with this world model.
     //
     lua_State *get_lua_state() { return lua_state_; }
 
-    // Make a tangible with a generated ID.
+    // scan_near
     //
-    // Pushes the database onto the lua stack and returns the tangible pointer.
+    // Get a list of the tangibles near the specified player ID.
     //
-    Tangible *tangible_make(lua_State *L);
+    std::vector<int64_t> scan_radius(const std::string &plane, float x, float y, float radius);
+    
+    // Make a tangible.
+    //
+    // If the ID is zero, allocates an ID using the thread's ID allocator. If
+    // pushdb is true, pushes the tangible's database onto the lua stack.
+    // Otherwise, leaves the lua stack untouched.
+    //
+    Tangible *tangible_make(lua_State *L, int64_t id, bool pushdb);
 
+    // Get a pointer to the specified tangible.
+    //
+    Tangible *tangible_get(int64_t id);
+    
     // Delete a tangible with the specified ID.
     //
     // If the tangible doesn't exist, does nothing.