Added tangible_make to world

luprex/syscpp/world.hpp

@@ -14,6 +14,10 @@ class World;
 
 class Tangible {
 public:
+    // Simple constructor initializes everything to null.
+    //
+    Tangible();
+
     // Always points back to the world model.
     World *world_;
 
@@ -68,6 +72,18 @@ public:
     //
     lua_State *get_lua_state() { return lua_state_; }
 
+    // Make a tangible with a generated ID.
+    //
+    // Pushes the database onto the lua stack and returns the tangible pointer.
+    //
+    Tangible *tangible_make(lua_State *L);
+
+    // Delete a tangible with the specified ID.
+    //
+    // If the tangible doesn't exist, does nothing.
+    //
+    void tangible_del(int64_t id);
+
     // fetch
     //
     // Given a lua state, fetch the world model associated with